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Eth1 Integration (#542)

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* Refactor to cache Eth1Data

* Fix merge conflicts and minor refactorings

* Rename Eth1Cache to Eth1DataCache

* Refactor events subscription

* Add deposits module to interface with BeaconChain deposits

* Remove utils

* Rename to types.rs and add trait constraints to Eth1DataFetcher

* Confirm to trait constraints. Make Web3DataFetcher cloneable

* Make fetcher object member of deposit and eth1_data cache and other fixes
* Fix update_cache function
* Move fetch_eth1_data to impl block
* Fix deposit tests

* Create Eth1 object for interfacing with Beacon chain
* Add `run` function for running update_cache and subscribe_deposit_logs tasks
* Add logging

* Run `cargo fmt` and make tests pass

* Convert sync functions to async

* Add timeouts to web3 functions

* Return futures from cache functions

* Add failed chaining of futures

* Working cache updation

* Clean up tests and `update_cache` function

* Refactor `get_eth1_data` functions to work with future returning functions

* Refactor eth1 `run` function to work with modified `update_cache` api

* Minor changes

* Add distance parameter to `update_cache`

* Fix tests and other minor fixes

* Working integration with cache and deposits

* Add merkle_tree construction, proof generation and verification code

* Add function to construct and fetch Deposits for BeaconNode

* Add error handling

* Import ssz

* Add error handling to eth1 cache and fix minor errors

* Run rustfmt

* Fix minor bug

* Rename Eth1Error and change to Result<T>

* Change deposit fetching mechanism from notification based to poll based
* Add deposits from eth1 chain in a given range every `x` blocks
* Modify `run` function to accommodate changes
* Minor fixes

* Fix formatting

* Initial commit. web3 api working.

* Tidied up lib. Add function for fetching logs.

* Refactor with `Eth1DataFetcher` trait

* Add parsing for deposit contract logs and get_eth1_data function

* Add `get_eth1_votes` function

* Refactor to cache Eth1Data

* Fix merge conflicts and minor refactorings

* Rename Eth1Cache to Eth1DataCache

* Refactor events subscription

* Add deposits module to interface with BeaconChain deposits

* Remove utils

* Rename to types.rs and add trait constraints to Eth1DataFetcher

* Confirm to trait constraints. Make Web3DataFetcher cloneable

* Make fetcher object member of deposit and eth1_data cache and other fixes
* Fix update_cache function
* Move fetch_eth1_data to impl block
* Fix deposit tests

* Create Eth1 object for interfacing with Beacon chain
* Add `run` function for running update_cache and subscribe_deposit_logs tasks
* Add logging

* Run `cargo fmt` and make tests pass

* Convert sync functions to async

* Add timeouts to web3 functions

* Return futures from cache functions

* Add failed chaining of futures

* Working cache updation

* Clean up tests and `update_cache` function

* Refactor `get_eth1_data` functions to work with future returning functions

* Refactor eth1 `run` function to work with modified `update_cache` api

* Minor changes

* Add distance parameter to `update_cache`

* Fix tests and other minor fixes

* Working integration with cache and deposits

* Add merkle_tree construction, proof generation and verification code

* Add function to construct and fetch Deposits for BeaconNode

* Add error handling

* Import ssz

* Add error handling to eth1 cache and fix minor errors

* Run rustfmt

* Fix minor bug

* Rename Eth1Error and change to Result<T>

* Change deposit fetching mechanism from notification based to poll based
* Add deposits from eth1 chain in a given range every `x` blocks
* Modify `run` function to accommodate changes
* Minor fixes

* Fix formatting

* Fix merge issue

* Refactor with `Config` struct. Remote `ContractConfig`

* Rename eth1_chain crate to eth1

* Rename files and read abi file using `fs::read`

* Move eth1 to lib

* Remove unnecessary mutability constraint

* Add `Web3Backend` for returning actual eth1 data

* Refactor `get_eth1_votes` to return a Result

* Delete `eth1_chain` crate

* Return `Result` from `get_deposits`

* Fix range of deposits to return to beacon chain

* Add `get_block_height_by_hash` trait function

* Add naive method for getting `previous_eth1_distance`

* Add eth1 config params to main config

* Add instructions for setting up eth1 testing environment

* Add build script to fetch deposit contract abi

* Contract ABI is part of compiled binary

* Fix minor bugs

* Move docs to lib

* Add timeout to config

* Remove print statements

* Change warn to error

* Fix typos

* Removed prints in test and get timeout value from config

* Fixed error types

* Added logging to web3_fetcher

* Refactor for modified web3 api

* Fix minor stuff

* Add build script

* Tidy, hide eth1 integration tests behind flag

* Add http crate

* Add first stages of eth1_test_rig

* Fix deposits on test rig

* Fix bug with deposit count method

* Add block hash getter to http eth1

* Clean eth1 http crate and tests

* Add script to start ganache

* Adds deposit tree to eth1-http

* Extend deposit tree tests

* Tidy tests in eth1-http

* Add more detail to get block request

* Add block cache to eth1-http

* Rename deposit tree to deposit cache

* Add inital updating to eth1-http

* Tidy updater

* Fix compile bugs in tests

* Adds an Eth1DataCache builder

* Reorg eth1-http files

* Add (failing) tests for eth1 updater

* Rename files, fix bug in eth1-http

* Ensure that ganache timestamps are increasing

* Fix bugs with getting eth1data ancestors

* Improve eth1 testing, fix bugs

* Add truncate method to block cache

* Add pruning to block cache update process

* Add tests for block pruning

* Allow for dropping an expired cache.

* Add more comments

* Add first compiling version of deposit updater

* Add common fn for getting range of required blocks

* Add passing deposit update test

* Improve tests

* Fix block pruning bug

* Add tests for running two updates at once

* Add updater services to eth1

* Add deposit collection to beacon chain

* Add incomplete builder experiments

* Add first working version of beacon chain builder

* Update test harness to new beacon chain type

* Rename builder file, tidy

* Add first working client builder

* Progress further on client builder

* Update becaon node binary to use client builder

* Ensure release tests compile

* Remove old eth1 crate

* Add first pass of new lighthouse binary

* Fix websocket server startup

* Remove old binary code from beacon_node crate

* Add first working beacon node tests

* Add genesis crate, new eth1 cache_2

* Add Serivce to Eth1Cache

* Refactor with general eth1 improvements

* Add passing genesis test

* Tidy, add comments

* Add more comments to eth1 service

* Add further eth1 progress

* Fix some bugs with genesis

* Fix eth1 bugs, make eth1 linking more efficient

* Shift logic in genesis service

* Add more comments to genesis service

* Add gzip, max request values, timeouts to http

* Update testnet parameters to suit goerli testnet

* Add ability to vary Fork, fix custom spec

* Be more explicit about deposit fork version

* Start adding beacon chain eth1 option

* Add more flexibility to prod client

* Further runtime refactoring

* Allow for starting from store

* Add bootstrapping to client config

* Add remote_beacon_node crate

* Update eth1 service for more configurability

* Update eth1 tests to use less runtimes

* Patch issues with tests using too many files

* Move dummy eth1 backend flag

* Ensure all tests pass

* Add ganache-cli to Dockerfile

* Use a special docker hub image for testing

* Appease clippy

* Move validator client into lighthouse binary

* Allow starting with dummy eth1 backend

* Improve logging

* Fix dummy eth1 backend from cli

* Add extra testnet command

* Ensure consistent spec in beacon node

* Update eth1 rig to work on goerli

* Tidy lcli, start adding support for yaml config

* Add incomplete YamlConfig struct

* Remove efforts at YamlConfig

* Add incomplete eth1 voting. Blocked on spec issues

* Add (untested) first pass at eth1 vote algo

* Add tests for winning vote

* Add more tests for eth1 chain

* Add more eth1 voting tests

* Added more eth1 voting testing

* Change test name

* Add more tests to eth1 chain

* Tidy eth1 generics, add more tests

* Improve comments

* Tidy beacon_node tests

* Tidy, rename JsonRpc.. to Caching..

* Tidy voting logic

* Tidy builder docs

* Add comments, tidy eth1

* Add more comments to eth1

* Fix bug with winning_vote

* Add doc comments to the `ClientBuilder`

* Remove commented-out code

* Improve `ClientBuilder` docs

* Add comments to client config

* Add decoding test for `ClientConfig`

* Remove unused `DepositSet` struct

* Tidy `block_cache`

* Remove commented out lines

* Remove unused code in `eth1` crate

* Remove old validator binary `main.rs`

* Tidy, fix tests compile error

* Add initial tests for get_deposits

* Remove dead code in eth1_test_rig

* Update TestingDepositBuilder

* Add testing for getting eth1 deposits

* Fix duplicate rand dep

* Remove dead code

* Remove accidentally-added files

* Fix comment in eth1_genesis_service

* Add .gitignore for eth1_test_rig

* Fix bug in eth1_genesis_service

* Remove dead code from eth2_config

* Fix tabs/spaces in root Cargo.toml

* Tidy eth1 crate

* Allow for re-use of eth1 service after genesis

* Update docs for new CLI

* Change README gif

* Tidy eth1 http module

* Tidy eth1 service

* Tidy environment crate

* Remove unused file

* Tidy, add comments

* Remove commented-out code

* Address majority of Michael's comments

* Address other PR comments

* Add link to issue alongside TODO
This commit is contained in:
Paul Hauner 2019-11-15 14:47:51 +11:00 committed by GitHub
parent 97729f8654
commit f229bbba1c
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99 changed files with 8263 additions and 1631 deletions
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2
.gitlab-ci.yml
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@ -1,7 +1,7 @@
#Adapted from https://users.rust-lang.org/t/my-gitlab-config-docs-tests/16396
default:
image: 'sigp/lighthouse:latest'
image: 'sigp/lighthouse:eth1'
cache:
paths:
- tests/ef_tests/*-v0.8.3.tar.gz

5
Cargo.toml
View File

@ -33,13 +33,18 @@ members = [
"beacon_node/eth2-libp2p",
"beacon_node/rpc",
"beacon_node/version",
"beacon_node/eth1",
"beacon_node/beacon_chain",
"beacon_node/websocket_server",
"tests/ef_tests",
"tests/eth1_test_rig",
"tests/node_test_rig",
"lcli",
"protos",
"validator_client",
"account_manager",
"lighthouse",
"lighthouse/environment"
]
[patch]

2
Dockerfile
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@ -19,6 +19,8 @@ RUN git clone https://github.com/google/protobuf.git && \
cd .. && \
rm -r protobuf
RUN apt-get install -y nodejs npm
RUN npm install -g ganache-cli --unsafe-perm
RUN mkdir -p /cache/cargocache && chmod -R ugo+rwX /cache/cargocache

4
README.md
View File

@ -15,7 +15,7 @@ An open-source Ethereum 2.0 client, written in Rust and maintained by Sigma Prim
[Swagger Badge]: https://img.shields.io/badge/Open%20API-0.2.0-success
[Swagger Link]: https://app.swaggerhub.com/apis-docs/spble/lighthouse_rest_api/0.2.0
![terminalize](https://i.postimg.cc/Y0BQ0z3R/terminalize.gif)
![terminalize](https://i.postimg.cc/kG11dpCW/lighthouse-cli-png.gif)
## Overview
@ -47,7 +47,7 @@ Current development overview:
- ~~**April 2019**: Inital single-client testnets.~~
- ~~**September 2019**: Inter-operability with other Ethereum 2.0 clients.~~
- **Early-October 2019**: `lighthouse-0.0.1` release: All major phase 0
- **Q4 2019**: `lighthouse-0.0.1` release: All major phase 0
features implemented.
- **Q4 2019**: Public, multi-client testnet with user-facing functionality.
- **Q4 2019**: Third-party security review.

9
beacon_node/Cargo.toml
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@ -4,6 +4,13 @@ version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>", "Age Manning <Age@AgeManning.com"]
edition = "2018"
[lib]
name = "beacon_node"
path = "src/lib.rs"
[dev-dependencies]
node_test_rig = { path = "../tests/node_test_rig" }
[dependencies]
eth2_config = { path = "../eth2/utils/eth2_config" }
lighthouse_bootstrap = { path = "../eth2/utils/lighthouse_bootstrap" }
@ -25,3 +32,5 @@ env_logger = "0.7.1"
dirs = "2.0.2"
logging = { path = "../eth2/utils/logging" }
futures = "0.1.29"
environment = { path = "../lighthouse/environment" }
genesis = { path = "genesis" }

9
beacon_node/beacon_chain/Cargo.toml
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@ -33,7 +33,14 @@ state_processing = { path = "../../eth2/state_processing" }
tree_hash = "0.1.0"
types = { path = "../../eth2/types" }
lmd_ghost = { path = "../../eth2/lmd_ghost" }
eth1 = { path = "../eth1" }
websocket_server = { path = "../websocket_server" }
futures = "0.1.25"
exit-future = "0.1.3"
genesis = { path = "../genesis" }
integer-sqrt = "0.1"
rand = "0.7.2"
[dev-dependencies]
rand = "0.7.2"
lazy_static = "1.4.0"
environment = { path = "../../lighthouse/environment" }

137
beacon_node/beacon_chain/src/beacon_chain.rs
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@ -26,7 +26,6 @@ use state_processing::{
use std::fs;
use std::io::prelude::*;
use std::sync::Arc;
use std::time::Duration;
use store::iter::{BlockRootsIterator, StateRootsIterator};
use store::{Error as DBError, Store};
use tree_hash::TreeHash;
@ -113,9 +112,9 @@ pub struct BeaconChain<T: BeaconChainTypes> {
/// inclusion in a block.
pub op_pool: OperationPool<T::EthSpec>,
/// Provides information from the Ethereum 1 (PoW) chain.
pub eth1_chain: Eth1Chain<T>,
pub eth1_chain: Option<Eth1Chain<T::Eth1Chain, T::EthSpec>>,
/// Stores a "snapshot" of the chain at the time the head-of-the-chain block was received.
canonical_head: RwLock<CheckPoint<T::EthSpec>>,
pub(crate) canonical_head: RwLock<CheckPoint<T::EthSpec>>,
/// The root of the genesis block.
pub genesis_block_root: Hash256,
/// A state-machine that is updated with information from the network and chooses a canonical
@ -124,119 +123,12 @@ pub struct BeaconChain<T: BeaconChainTypes> {
/// A handler for events generated by the beacon chain.
pub event_handler: T::EventHandler,
/// Logging to CLI, etc.
log: Logger,
pub(crate) log: Logger,
}
type BeaconInfo<T> = (BeaconBlock<T>, BeaconState<T>);
type BeaconBlockAndState<T> = (BeaconBlock<T>, BeaconState<T>);
impl<T: BeaconChainTypes> BeaconChain<T> {
/// Instantiate a new Beacon Chain, from genesis.
pub fn from_genesis(
store: Arc<T::Store>,
eth1_backend: T::Eth1Chain,
event_handler: T::EventHandler,
mut genesis_state: BeaconState<T::EthSpec>,
mut genesis_block: BeaconBlock<T::EthSpec>,
spec: ChainSpec,
log: Logger,
) -> Result<Self, Error> {
genesis_state.build_all_caches(&spec)?;
let genesis_state_root = genesis_state.canonical_root();
store.put(&genesis_state_root, &genesis_state)?;
genesis_block.state_root = genesis_state_root;
let genesis_block_root = genesis_block.block_header().canonical_root();
store.put(&genesis_block_root, &genesis_block)?;
// Also store the genesis block under the `ZERO_HASH` key.
let genesis_block_root = genesis_block.canonical_root();
store.put(&Hash256::zero(), &genesis_block)?;
let canonical_head = RwLock::new(CheckPoint::new(
genesis_block.clone(),
genesis_block_root,
genesis_state.clone(),
genesis_state_root,
));
// Slot clock
let slot_clock = T::SlotClock::new(
spec.genesis_slot,
Duration::from_secs(genesis_state.genesis_time),
Duration::from_millis(spec.milliseconds_per_slot),
);
info!(log, "Beacon chain initialized from genesis";
"validator_count" => genesis_state.validators.len(),
"state_root" => format!("{}", genesis_state_root),
"block_root" => format!("{}", genesis_block_root),
);
Ok(Self {
spec,
slot_clock,
op_pool: OperationPool::new(),
eth1_chain: Eth1Chain::new(eth1_backend),
canonical_head,
genesis_block_root,
fork_choice: ForkChoice::new(store.clone(), &genesis_block, genesis_block_root),
event_handler,
store,
log,
})
}
/// Attempt to load an existing instance from the given `store`.
pub fn from_store(
store: Arc<T::Store>,
eth1_backend: T::Eth1Chain,
event_handler: T::EventHandler,
spec: ChainSpec,
log: Logger,
) -> Result<Option<BeaconChain<T>>, Error> {
let key = Hash256::from_slice(&BEACON_CHAIN_DB_KEY.as_bytes());
let p: PersistedBeaconChain<T> = match store.get(&key) {
Err(e) => return Err(e.into()),
Ok(None) => return Ok(None),
Ok(Some(p)) => p,
};
let state = &p.canonical_head.beacon_state;
let slot_clock = T::SlotClock::new(
spec.genesis_slot,
Duration::from_secs(state.genesis_time),
Duration::from_millis(spec.milliseconds_per_slot),
);
let last_finalized_root = p.canonical_head.beacon_state.finalized_checkpoint.root;
let last_finalized_block = &p.canonical_head.beacon_block;
let op_pool = p.op_pool.into_operation_pool(state, &spec);
info!(log, "Beacon chain initialized from store";
"head_root" => format!("{}", p.canonical_head.beacon_block_root),
"head_epoch" => format!("{}", p.canonical_head.beacon_block.slot.epoch(T::EthSpec::slots_per_epoch())),
"finalized_root" => format!("{}", last_finalized_root),
"finalized_epoch" => format!("{}", last_finalized_block.slot.epoch(T::EthSpec::slots_per_epoch())),
);
Ok(Some(BeaconChain {
spec,
slot_clock,
fork_choice: ForkChoice::new(store.clone(), last_finalized_block, last_finalized_root),
op_pool,
event_handler,
eth1_chain: Eth1Chain::new(eth1_backend),
canonical_head: RwLock::new(p.canonical_head),
genesis_block_root: p.genesis_block_root,
store,
log,
}))
}
/// Attempt to save this instance to `self.store`.
pub fn persist(&self) -> Result<(), Error> {
let timer = metrics::start_timer(&metrics::PERSIST_CHAIN);
@ -1270,7 +1162,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
&self,
randao_reveal: Signature,
slot: Slot,
) -> Result<BeaconInfo<T::EthSpec>, BlockProductionError> {
) -> Result<BeaconBlockAndState<T::EthSpec>, BlockProductionError> {
let state = self
.state_at_slot(slot - 1)
.map_err(|_| BlockProductionError::UnableToProduceAtSlot(slot))?;
@ -1291,10 +1183,15 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
mut state: BeaconState<T::EthSpec>,
produce_at_slot: Slot,
randao_reveal: Signature,
) -> Result<BeaconInfo<T::EthSpec>, BlockProductionError> {
) -> Result<BeaconBlockAndState<T::EthSpec>, BlockProductionError> {
metrics::inc_counter(&metrics::BLOCK_PRODUCTION_REQUESTS);
let timer = metrics::start_timer(&metrics::BLOCK_PRODUCTION_TIMES);
let eth1_chain = self
.eth1_chain
.as_ref()
.ok_or_else(|| BlockProductionError::NoEth1ChainConnection)?;
// If required, transition the new state to the present slot.
while state.slot < produce_at_slot {
per_slot_processing(&mut state, &self.spec)?;
@ -1319,17 +1216,19 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
let mut block = BeaconBlock {
slot: state.slot,
parent_root,
state_root: Hash256::zero(), // Updated after the state is calculated.
signature: Signature::empty_signature(), // To be completed by a validator.
state_root: Hash256::zero(),
// The block is not signed here, that is the task of a validator client.
signature: Signature::empty_signature(),
body: BeaconBlockBody {
randao_reveal,
// TODO: replace with real data.
eth1_data: self.eth1_chain.eth1_data_for_block_production(&state)?,
eth1_data: eth1_chain.eth1_data_for_block_production(&state, &self.spec)?,
graffiti,
proposer_slashings: proposer_slashings.into(),
attester_slashings: attester_slashings.into(),
attestations: self.op_pool.get_attestations(&state, &self.spec).into(),
deposits: self.eth1_chain.deposits_for_block_inclusion(&state)?.into(),
deposits: eth1_chain
.deposits_for_block_inclusion(&state, &self.spec)?
.into(),
voluntary_exits: self.op_pool.get_voluntary_exits(&state, &self.spec).into(),
transfers: self.op_pool.get_transfers(&state, &self.spec).into(),
},

622
beacon_node/beacon_chain/src/builder.rs Normal file
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@ -0,0 +1,622 @@
use crate::eth1_chain::CachingEth1Backend;
use crate::events::NullEventHandler;
use crate::persisted_beacon_chain::{PersistedBeaconChain, BEACON_CHAIN_DB_KEY};
use crate::{
BeaconChain, BeaconChainTypes, CheckPoint, Eth1Chain, Eth1ChainBackend, EventHandler,
ForkChoice,
};
use eth1::Config as Eth1Config;
use lmd_ghost::{LmdGhost, ThreadSafeReducedTree};
use operation_pool::OperationPool;
use parking_lot::RwLock;
use slog::{info, Logger};
use slot_clock::{SlotClock, TestingSlotClock};
use std::marker::PhantomData;
use std::sync::Arc;
use std::time::Duration;
use store::Store;
use types::{BeaconBlock, BeaconState, ChainSpec, EthSpec, Hash256, Slot};
/// An empty struct used to "witness" all the `BeaconChainTypes` traits. It has no user-facing
/// functionality and only exists to satisfy the type system.
pub struct Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>(
PhantomData<(
TStore,
TSlotClock,
TLmdGhost,
TEth1Backend,
TEthSpec,
TEventHandler,
)>,
);
impl<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler> BeaconChainTypes
for Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
type Store = TStore;
type SlotClock = TSlotClock;
type LmdGhost = TLmdGhost;
type Eth1Chain = TEth1Backend;
type EthSpec = TEthSpec;
type EventHandler = TEventHandler;
}
/// Builds a `BeaconChain` by either creating anew from genesis, or, resuming from an existing chain
/// persisted to `store`.
///
/// Types may be elided and the compiler will infer them if all necessary builder methods have been
/// called. If type inference errors are being raised, it is likely that not all required methods
/// have been called.
///
/// See the tests for an example of a complete working example.
pub struct BeaconChainBuilder<T: BeaconChainTypes> {
store: Option<Arc<T::Store>>,
/// The finalized checkpoint to anchor the chain. May be genesis or a higher
/// checkpoint.
pub finalized_checkpoint: Option<CheckPoint<T::EthSpec>>,
genesis_block_root: Option<Hash256>,
op_pool: Option<OperationPool<T::EthSpec>>,
fork_choice: Option<ForkChoice<T>>,
eth1_chain: Option<Eth1Chain<T::Eth1Chain, T::EthSpec>>,
event_handler: Option<T::EventHandler>,
slot_clock: Option<T::SlotClock>,
spec: ChainSpec,
log: Option<Logger>,
}
impl<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
BeaconChainBuilder<
Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Returns a new builder.
///
/// The `_eth_spec_instance` parameter is only supplied to make concrete the `TEthSpec` trait.
/// This should generally be either the `MinimalEthSpec` or `MainnetEthSpec` types.
pub fn new(_eth_spec_instance: TEthSpec) -> Self {
Self {
store: None,
finalized_checkpoint: None,
genesis_block_root: None,
op_pool: None,
fork_choice: None,
eth1_chain: None,
event_handler: None,
slot_clock: None,
spec: TEthSpec::default_spec(),
log: None,
}
}
/// Override the default spec (as defined by `TEthSpec`).
///
/// This method should generally be called immediately after `Self::new` to ensure components
/// are started with a consistent spec.
pub fn custom_spec(mut self, spec: ChainSpec) -> Self {
self.spec = spec;
self
}
/// Sets the store (database).
///
/// Should generally be called early in the build chain.
pub fn store(mut self, store: Arc<TStore>) -> Self {
self.store = Some(store);
self
}
/// Sets the logger.
///
/// Should generally be called early in the build chain.
pub fn logger(mut self, logger: Logger) -> Self {
self.log = Some(logger);
self
}
/// Attempt to load an existing chain from the builder's `Store`.
///
/// May initialize several components; including the op_pool and finalized checkpoints.
pub fn resume_from_db(mut self) -> Result<Self, String> {
let log = self
.log
.as_ref()
.ok_or_else(|| "resume_from_db requires a log".to_string())?;
info!(
log,
"Starting beacon chain";
"method" => "resume"
);
let store = self
.store
.clone()
.ok_or_else(|| "load_from_store requires a store.".to_string())?;
let key = Hash256::from_slice(&BEACON_CHAIN_DB_KEY.as_bytes());
let p: PersistedBeaconChain<
Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>,
> = match store.get(&key) {
Err(e) => {
return Err(format!(
"DB error when reading persisted beacon chain: {:?}",
e
))
}
Ok(None) => return Err("No persisted beacon chain found in store".into()),
Ok(Some(p)) => p,
};
self.op_pool = Some(
p.op_pool
.into_operation_pool(&p.canonical_head.beacon_state, &self.spec),
);
self.finalized_checkpoint = Some(p.canonical_head);
self.genesis_block_root = Some(p.genesis_block_root);
Ok(self)
}
/// Starts a new chain from a genesis state.
pub fn genesis_state(
mut self,
mut beacon_state: BeaconState<TEthSpec>,
) -> Result<Self, String> {
let store = self
.store
.clone()
.ok_or_else(|| "genesis_state requires a store")?;
let mut beacon_block = genesis_block(&beacon_state, &self.spec);
beacon_state
.build_all_caches(&self.spec)
.map_err(|e| format!("Failed to build genesis state caches: {:?}", e))?;
let beacon_state_root = beacon_state.canonical_root();
beacon_block.state_root = beacon_state_root;
let beacon_block_root = beacon_block.canonical_root();
self.genesis_block_root = Some(beacon_block_root);
store
.put(&beacon_state_root, &beacon_state)
.map_err(|e| format!("Failed to store genesis state: {:?}", e))?;
store
.put(&beacon_block_root, &beacon_block)
.map_err(|e| format!("Failed to store genesis block: {:?}", e))?;
// Store the genesis block under the `ZERO_HASH` key.
store.put(&Hash256::zero(), &beacon_block).map_err(|e| {
format!(
"Failed to store genesis block under 0x00..00 alias: {:?}",
e
)
})?;
self.finalized_checkpoint = Some(CheckPoint {
beacon_block_root,
beacon_block,
beacon_state_root,
beacon_state,
});
Ok(self.empty_op_pool())
}
/// Sets the `BeaconChain` fork choice backend.
///
/// Requires the store and state to have been specified earlier in the build chain.
pub fn fork_choice_backend(mut self, backend: TLmdGhost) -> Result<Self, String> {
let store = self
.store
.clone()
.ok_or_else(|| "reduced_tree_fork_choice requires a store")?;
let genesis_block_root = self
.genesis_block_root
.ok_or_else(|| "fork_choice_backend requires a genesis_block_root")?;
self.fork_choice = Some(ForkChoice::new(store, backend, genesis_block_root));
Ok(self)
}
/// Sets the `BeaconChain` eth1 backend.
pub fn eth1_backend(mut self, backend: Option<TEth1Backend>) -> Self {
self.eth1_chain = backend.map(Eth1Chain::new);
self
}
/// Sets the `BeaconChain` event handler backend.
///
/// For example, provide `WebSocketSender` as a `handler`.
pub fn event_handler(mut self, handler: TEventHandler) -> Self {
self.event_handler = Some(handler);
self
}
/// Sets the `BeaconChain` slot clock.
///
/// For example, provide `SystemTimeSlotClock` as a `clock`.
pub fn slot_clock(mut self, clock: TSlotClock) -> Self {
self.slot_clock = Some(clock);
self
}
/// Creates a new, empty operation pool.
fn empty_op_pool(mut self) -> Self {
self.op_pool = Some(OperationPool::new());
self
}
/// Consumes `self`, returning a `BeaconChain` if all required parameters have been supplied.
///
/// An error will be returned at runtime if all required parameters have not been configured.
///
/// Will also raise ambiguous type errors at compile time if some parameters have not been
/// configured.
#[allow(clippy::type_complexity)] // I think there's nothing to be gained here from a type alias.
pub fn build(
self,
) -> Result<
BeaconChain<Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>>,
String,
> {
let mut canonical_head = self
.finalized_checkpoint
.ok_or_else(|| "Cannot build without a state".to_string())?;
canonical_head
.beacon_state
.build_all_caches(&self.spec)
.map_err(|e| format!("Failed to build state caches: {:?}", e))?;
let log = self
.log
.ok_or_else(|| "Cannot build without a logger".to_string())?;
if canonical_head.beacon_block.state_root != canonical_head.beacon_state_root {
return Err("beacon_block.state_root != beacon_state".to_string());
}
let beacon_chain = BeaconChain {
spec: self.spec,
store: self
.store
.ok_or_else(|| "Cannot build without store".to_string())?,
slot_clock: self
.slot_clock
.ok_or_else(|| "Cannot build without slot clock".to_string())?,
op_pool: self
.op_pool
.ok_or_else(|| "Cannot build without op pool".to_string())?,
eth1_chain: self.eth1_chain,
canonical_head: RwLock::new(canonical_head),
genesis_block_root: self
.genesis_block_root
.ok_or_else(|| "Cannot build without a genesis block root".to_string())?,
fork_choice: self
.fork_choice
.ok_or_else(|| "Cannot build without a fork choice".to_string())?,
event_handler: self
.event_handler
.ok_or_else(|| "Cannot build without an event handler".to_string())?,
log: log.clone(),
};
info!(
log,
"Beacon chain initialized";
"head_state" => format!("{}", beacon_chain.head().beacon_state_root),
"head_block" => format!("{}", beacon_chain.head().beacon_block_root),
"head_slot" => format!("{}", beacon_chain.head().beacon_block.slot),
);
Ok(beacon_chain)
}
}
impl<TStore, TSlotClock, TEth1Backend, TEthSpec, TEventHandler>
BeaconChainBuilder<
Witness<
TStore,
TSlotClock,
ThreadSafeReducedTree<TStore, TEthSpec>,
TEth1Backend,
TEthSpec,
TEventHandler,
>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Initializes a new, empty (no recorded votes or blocks) fork choice, using the
/// `ThreadSafeReducedTree` backend.
///
/// Requires the store and state to be initialized.
pub fn empty_reduced_tree_fork_choice(self) -> Result<Self, String> {
let store = self
.store
.clone()
.ok_or_else(|| "reduced_tree_fork_choice requires a store")?;
let finalized_checkpoint = &self
.finalized_checkpoint
.as_ref()
.expect("should have finalized checkpoint");
let backend = ThreadSafeReducedTree::new(
store.clone(),
&finalized_checkpoint.beacon_block,
finalized_checkpoint.beacon_block_root,
);
self.fork_choice_backend(backend)
}
}
impl<TStore, TSlotClock, TLmdGhost, TEthSpec, TEventHandler>
BeaconChainBuilder<
Witness<
TStore,
TSlotClock,
TLmdGhost,
CachingEth1Backend<TEthSpec, TStore>,
TEthSpec,
TEventHandler,
>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Sets the `BeaconChain` eth1 back-end to `CachingEth1Backend`.
pub fn caching_eth1_backend(self, backend: CachingEth1Backend<TEthSpec, TStore>) -> Self {
self.eth1_backend(Some(backend))
}
/// Do not use any eth1 backend. The client will not be able to produce beacon blocks.
pub fn no_eth1_backend(self) -> Self {
self.eth1_backend(None)
}
/// Sets the `BeaconChain` eth1 back-end to produce predictably junk data when producing blocks.
pub fn dummy_eth1_backend(mut self) -> Result<Self, String> {
let log = self
.log
.as_ref()
.ok_or_else(|| "dummy_eth1_backend requires a log".to_string())?;
let store = self
.store
.clone()
.ok_or_else(|| "dummy_eth1_backend requires a store.".to_string())?;
let backend = CachingEth1Backend::new(Eth1Config::default(), log.clone(), store);
let mut eth1_chain = Eth1Chain::new(backend);
eth1_chain.use_dummy_backend = true;
self.eth1_chain = Some(eth1_chain);
Ok(self)
}
}
impl<TStore, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
BeaconChainBuilder<
Witness<TStore, TestingSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>,
>
where
TStore: Store + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Sets the `BeaconChain` slot clock to `TestingSlotClock`.
///
/// Requires the state to be initialized.
pub fn testing_slot_clock(self, slot_duration: Duration) -> Result<Self, String> {
let genesis_time = self
.finalized_checkpoint
.as_ref()
.ok_or_else(|| "testing_slot_clock requires an initialized state")?
.beacon_state
.genesis_time;
let slot_clock = TestingSlotClock::new(
Slot::new(0),
Duration::from_secs(genesis_time),
slot_duration,
);
Ok(self.slot_clock(slot_clock))
}
}
impl<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec>
BeaconChainBuilder<
Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, NullEventHandler<TEthSpec>>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
{
/// Sets the `BeaconChain` event handler to `NullEventHandler`.
pub fn null_event_handler(self) -> Self {
let handler = NullEventHandler::default();
self.event_handler(handler)
}
}
fn genesis_block<T: EthSpec>(genesis_state: &BeaconState<T>, spec: &ChainSpec) -> BeaconBlock<T> {
let mut genesis_block = BeaconBlock::empty(&spec);
genesis_block.state_root = genesis_state.canonical_root();
genesis_block
}
#[cfg(test)]
mod test {
use super::*;
use eth2_hashing::hash;
use genesis::{generate_deterministic_keypairs, interop_genesis_state};
use sloggers::{null::NullLoggerBuilder, Build};
use ssz::Encode;
use std::time::Duration;
use store::MemoryStore;
use types::{EthSpec, MinimalEthSpec, Slot};
type TestEthSpec = MinimalEthSpec;
fn get_logger() -> Logger {
let builder = NullLoggerBuilder;
builder.build().expect("should build logger")
}
#[test]
fn recent_genesis() {
let validator_count = 8;
let genesis_time = 13371337;
let log = get_logger();
let store = Arc::new(MemoryStore::open());
let spec = MinimalEthSpec::default_spec();
let genesis_state = interop_genesis_state(
&generate_deterministic_keypairs(validator_count),
genesis_time,
&spec,
)
.expect("should create interop genesis state");
let chain = BeaconChainBuilder::new(MinimalEthSpec)
.logger(log.clone())
.store(store.clone())
.genesis_state(genesis_state)
.expect("should build state using recent genesis")
.dummy_eth1_backend()
.expect("should build the dummy eth1 backend")
.null_event_handler()
.testing_slot_clock(Duration::from_secs(1))
.expect("should configure testing slot clock")
.empty_reduced_tree_fork_choice()
.expect("should add fork choice to builder")
.build()
.expect("should build");
let head = chain.head();
let state = head.beacon_state;
let block = head.beacon_block;
assert_eq!(state.slot, Slot::new(0), "should start from genesis");
assert_eq!(
state.genesis_time, 13371337,
"should have the correct genesis time"
);
assert_eq!(
block.state_root,
state.canonical_root(),
"block should have correct state root"
);
assert_eq!(
chain
.store
.get::<BeaconBlock<_>>(&Hash256::zero())
.expect("should read db")
.expect("should find genesis block"),
block,
"should store genesis block under zero hash alias"
);
assert_eq!(
state.validators.len(),
validator_count,
"should have correct validator count"
);
assert_eq!(
chain.genesis_block_root,
block.canonical_root(),
"should have correct genesis block root"
);
}
#[test]
fn interop_state() {
let validator_count = 16;
let genesis_time = 42;
let spec = &TestEthSpec::default_spec();
let keypairs = generate_deterministic_keypairs(validator_count);
let state = interop_genesis_state::<TestEthSpec>(&keypairs, genesis_time, spec)
.expect("should build state");
assert_eq!(
state.eth1_data.block_hash,
Hash256::from_slice(&[0x42; 32]),
"eth1 block hash should be co-ordinated junk"
);
assert_eq!(
state.genesis_time, genesis_time,
"genesis time should be as specified"
);
for b in &state.balances {
assert_eq!(
*b, spec.max_effective_balance,
"validator balances should be max effective balance"
);
}
for v in &state.validators {
let creds = v.withdrawal_credentials.as_bytes();
assert_eq!(
creds[0], spec.bls_withdrawal_prefix_byte,
"first byte of withdrawal creds should be bls prefix"
);
assert_eq!(
&creds[1..],
&hash(&v.pubkey.as_ssz_bytes())[1..],
"rest of withdrawal creds should be pubkey hash"
)
}
assert_eq!(
state.balances.len(),
validator_count,
"validator balances len should be correct"
);
assert_eq!(
state.validators.len(),
validator_count,
"validator count should be correct"
);
}
}

3
beacon_node/beacon_chain/src/errors.rs
View File

@ -55,6 +55,9 @@ pub enum BlockProductionError {
BlockProcessingError(BlockProcessingError),
Eth1ChainError(Eth1ChainError),
BeaconStateError(BeaconStateError),
/// The `BeaconChain` was explicitly configured _without_ a connection to eth1, therefore it
/// cannot produce blocks.
NoEth1ChainConnection,
}
easy_from_to!(BlockProcessingError, BlockProductionError);

1094
beacon_node/beacon_chain/src/eth1_chain.rs
View File

File diff suppressed because it is too large Load Diff

10
beacon_node/beacon_chain/src/events.rs
View File

@ -1,6 +1,7 @@
use serde_derive::{Deserialize, Serialize};
use std::marker::PhantomData;
use types::{Attestation, BeaconBlock, Epoch, EthSpec, Hash256};
pub use websocket_server::WebSocketSender;
pub trait EventHandler<T: EthSpec>: Sized + Send + Sync {
fn register(&self, kind: EventKind<T>) -> Result<(), String>;
@ -8,6 +9,15 @@ pub trait EventHandler<T: EthSpec>: Sized + Send + Sync {
pub struct NullEventHandler<T: EthSpec>(PhantomData<T>);
impl<T: EthSpec> EventHandler<T> for WebSocketSender<T> {
fn register(&self, kind: EventKind<T>) -> Result<(), String> {
self.send_string(
serde_json::to_string(&kind)
.map_err(|e| format!("Unable to serialize event: {:?}", e))?,
)
}
}
impl<T: EthSpec> EventHandler<T> for NullEventHandler<T> {
fn register(&self, _kind: EventKind<T>) -> Result<(), String> {
Ok(())

8
beacon_node/beacon_chain/src/fork_choice.rs
View File

@ -33,14 +33,10 @@ impl<T: BeaconChainTypes> ForkChoice<T> {
///
/// "Genesis" does not necessarily need to be the absolute genesis, it can be some finalized
/// block.
pub fn new(
store: Arc<T::Store>,
genesis_block: &BeaconBlock<T::EthSpec>,
genesis_block_root: Hash256,
) -> Self {
pub fn new(store: Arc<T::Store>, backend: T::LmdGhost, genesis_block_root: Hash256) -> Self {
Self {
store: store.clone(),
backend: T::LmdGhost::new(store, genesis_block, genesis_block_root),
backend,
genesis_block_root,
}
}

9
beacon_node/beacon_chain/src/lib.rs
View File

@ -3,10 +3,10 @@
extern crate lazy_static;
mod beacon_chain;
mod beacon_chain_builder;
pub mod builder;
mod checkpoint;
mod errors;
mod eth1_chain;
pub mod eth1_chain;
pub mod events;
mod fork_choice;
mod iter;
@ -19,8 +19,9 @@ pub use self::beacon_chain::{
};
pub use self::checkpoint::CheckPoint;
pub use self::errors::{BeaconChainError, BlockProductionError};
pub use beacon_chain_builder::BeaconChainBuilder;
pub use eth1_chain::{Eth1ChainBackend, InteropEth1ChainBackend};
pub use eth1_chain::{Eth1Chain, Eth1ChainBackend};
pub use events::EventHandler;
pub use fork_choice::ForkChoice;
pub use lmd_ghost;
pub use metrics::scrape_for_metrics;
pub use parking_lot;

91
beacon_node/beacon_chain/src/test_utils.rs
View File

@ -1,14 +1,17 @@
use crate::{
events::NullEventHandler, AttestationProcessingOutcome, BeaconChain, BeaconChainBuilder,
BeaconChainTypes, BlockProcessingOutcome, InteropEth1ChainBackend,
builder::{BeaconChainBuilder, Witness},
eth1_chain::CachingEth1Backend,
events::NullEventHandler,
AttestationProcessingOutcome, BeaconChain, BeaconChainTypes, BlockProcessingOutcome,
};
use lmd_ghost::LmdGhost;
use genesis::interop_genesis_state;
use lmd_ghost::ThreadSafeReducedTree;
use rayon::prelude::*;
use sloggers::{terminal::TerminalLoggerBuilder, types::Severity, Build};
use slot_clock::TestingSlotClock;
use state_processing::per_slot_processing;
use std::marker::PhantomData;
use std::sync::Arc;
use std::time::Duration;
use store::MemoryStore;
use tree_hash::{SignedRoot, TreeHash};
use types::{
@ -17,12 +20,20 @@ use types::{
Slot,
};
pub use crate::persisted_beacon_chain::{PersistedBeaconChain, BEACON_CHAIN_DB_KEY};
pub use types::test_utils::generate_deterministic_keypairs;
pub use crate::persisted_beacon_chain::{PersistedBeaconChain, BEACON_CHAIN_DB_KEY};
pub const HARNESS_GENESIS_TIME: u64 = 1_567_552_690; // 4th September 2019
pub type HarnessType<E> = Witness<
MemoryStore,
TestingSlotClock,
ThreadSafeReducedTree<MemoryStore, E>,
CachingEth1Backend<E, MemoryStore>,
E,
NullEventHandler<E>,
>;
/// Indicates how the `BeaconChainHarness` should produce blocks.
#[derive(Clone, Copy, Debug)]
pub enum BlockStrategy {
@ -48,50 +59,19 @@ pub enum AttestationStrategy {
SomeValidators(Vec<usize>),
}
/// Used to make the `BeaconChainHarness` generic over some types.
pub struct CommonTypes<L, E>
where
L: LmdGhost<MemoryStore, E>,
E: EthSpec,
{
_phantom_l: PhantomData<L>,
_phantom_e: PhantomData<E>,
}
impl<L, E> BeaconChainTypes for CommonTypes<L, E>
where
L: LmdGhost<MemoryStore, E> + 'static,
E: EthSpec,
{
type Store = MemoryStore;
type SlotClock = TestingSlotClock;
type LmdGhost = L;
type Eth1Chain = InteropEth1ChainBackend<E>;
type EthSpec = E;
type EventHandler = NullEventHandler<E>;
}
/// A testing harness which can instantiate a `BeaconChain` and populate it with blocks and
/// attestations.
///
/// Used for testing.
pub struct BeaconChainHarness<L, E>
where
L: LmdGhost<MemoryStore, E> + 'static,
E: EthSpec,
{
pub chain: BeaconChain<CommonTypes<L, E>>,
pub struct BeaconChainHarness<T: BeaconChainTypes> {
pub chain: BeaconChain<T>,
pub keypairs: Vec<Keypair>,
pub spec: ChainSpec,
}
impl<L, E> BeaconChainHarness<L, E>
where
L: LmdGhost<MemoryStore, E>,
E: EthSpec,
{
impl<E: EthSpec> BeaconChainHarness<HarnessType<E>> {
/// Instantiate a new harness with `validator_count` initial validators.
pub fn new(keypairs: Vec<Keypair>) -> Self {
pub fn new(eth_spec_instance: E, keypairs: Vec<Keypair>) -> Self {
let spec = E::default_spec();
let log = TerminalLoggerBuilder::new()
@ -99,22 +79,29 @@ where
.build()
.expect("logger should build");
let store = Arc::new(MemoryStore::open());
let chain =
BeaconChainBuilder::quick_start(HARNESS_GENESIS_TIME, &keypairs, spec.clone(), log)
.unwrap_or_else(|e| panic!("Failed to create beacon chain builder: {}", e))
.build(
store.clone(),
InteropEth1ChainBackend::default(),
NullEventHandler::default(),
let chain = BeaconChainBuilder::new(eth_spec_instance)
.logger(log.clone())
.custom_spec(spec.clone())
.store(Arc::new(MemoryStore::open()))
.genesis_state(
interop_genesis_state::<E>(&keypairs, HARNESS_GENESIS_TIME, &spec)
.expect("should generate interop state"),
)
.unwrap_or_else(|e| panic!("Failed to build beacon chain: {}", e));
.expect("should build state using recent genesis")
.dummy_eth1_backend()
.expect("should build dummy backend")
.null_event_handler()
.testing_slot_clock(Duration::from_secs(1))
.expect("should configure testing slot clock")
.empty_reduced_tree_fork_choice()
.expect("should add fork choice to builder")
.build()
.expect("should build");
Self {
spec: chain.spec.clone(),
chain,
keypairs,
spec,
}
}

13
beacon_node/beacon_chain/tests/tests.rs
View File

@ -6,14 +6,13 @@ extern crate lazy_static;
use beacon_chain::AttestationProcessingOutcome;
use beacon_chain::{
test_utils::{
AttestationStrategy, BeaconChainHarness, BlockStrategy, CommonTypes, PersistedBeaconChain,
AttestationStrategy, BeaconChainHarness, BlockStrategy, HarnessType, PersistedBeaconChain,
BEACON_CHAIN_DB_KEY,
},
BlockProcessingOutcome,
};
use lmd_ghost::ThreadSafeReducedTree;
use rand::Rng;
use store::{MemoryStore, Store};
use store::Store;
use types::test_utils::{SeedableRng, TestRandom, XorShiftRng};
use types::{Deposit, EthSpec, Hash256, Keypair, MinimalEthSpec, RelativeEpoch, Slot};
@ -25,10 +24,8 @@ lazy_static! {
static ref KEYPAIRS: Vec<Keypair> = types::test_utils::generate_deterministic_keypairs(VALIDATOR_COUNT);
}
type TestForkChoice = ThreadSafeReducedTree<MemoryStore, MinimalEthSpec>;
fn get_harness(validator_count: usize) -> BeaconChainHarness<TestForkChoice, MinimalEthSpec> {
let harness = BeaconChainHarness::new(KEYPAIRS[0..validator_count].to_vec());
fn get_harness(validator_count: usize) -> BeaconChainHarness<HarnessType<MinimalEthSpec>> {
let harness = BeaconChainHarness::new(MinimalEthSpec, KEYPAIRS[0..validator_count].to_vec());
harness.advance_slot();
@ -322,7 +319,7 @@ fn roundtrip_operation_pool() {
harness.chain.persist().unwrap();
let key = Hash256::from_slice(&BEACON_CHAIN_DB_KEY.as_bytes());
let p: PersistedBeaconChain<CommonTypes<TestForkChoice, MinimalEthSpec>> =
let p: PersistedBeaconChain<HarnessType<MinimalEthSpec>> =
harness.chain.store.get(&key).unwrap().unwrap();
let restored_op_pool = p

9
beacon_node/client/Cargo.toml
View File

@ -4,6 +4,10 @@ version = "0.1.0"
authors = ["Age Manning <Age@AgeManning.com>"]
edition = "2018"
[dev-dependencies]
sloggers = "0.3.4"
toml = "^0.5"
[dependencies]
beacon_chain = { path = "../beacon_chain" }
store = { path = "../store" }
@ -31,3 +35,8 @@ exit-future = "0.1.4"
futures = "0.1.29"
reqwest = "0.9.22"
url = "2.1.0"
lmd_ghost = { path = "../../eth2/lmd_ghost" }
eth1 = { path = "../eth1" }
genesis = { path = "../genesis" }
environment = { path = "../../lighthouse/environment" }
lighthouse_bootstrap = { path = "../../eth2/utils/lighthouse_bootstrap" }

715
beacon_node/client/src/builder.rs Normal file
View File

@ -0,0 +1,715 @@
use crate::config::{ClientGenesis, Config as ClientConfig};
use crate::Client;
use beacon_chain::{
builder::{BeaconChainBuilder, Witness},
eth1_chain::CachingEth1Backend,
lmd_ghost::ThreadSafeReducedTree,
slot_clock::{SlotClock, SystemTimeSlotClock},
store::{DiskStore, MemoryStore, Store},
BeaconChain, BeaconChainTypes, Eth1ChainBackend, EventHandler,
};
use environment::RuntimeContext;
use eth1::{Config as Eth1Config, Service as Eth1Service};
use eth2_config::Eth2Config;
use exit_future::Signal;
use futures::{future, Future, IntoFuture, Stream};
use genesis::{
generate_deterministic_keypairs, interop_genesis_state, state_from_ssz_file, Eth1GenesisService,
};
use lighthouse_bootstrap::Bootstrapper;
use lmd_ghost::LmdGhost;
use network::{NetworkConfig, NetworkMessage, Service as NetworkService};
use rpc::Config as RpcConfig;
use slog::{debug, error, info, warn};
use std::net::SocketAddr;
use std::path::Path;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::sync::mpsc::UnboundedSender;
use tokio::timer::Interval;
use types::{ChainSpec, EthSpec};
use websocket_server::{Config as WebSocketConfig, WebSocketSender};
/// The interval between notifier events.
pub const NOTIFIER_INTERVAL_SECONDS: u64 = 15;
/// Create a warning log whenever the peer count is at or below this value.
pub const WARN_PEER_COUNT: usize = 1;
/// Interval between polling the eth1 node for genesis information.
pub const ETH1_GENESIS_UPDATE_INTERVAL_MILLIS: u64 = 500;
/// Builds a `Client` instance.
///
/// ## Notes
///
/// The builder may start some services (e.g.., libp2p, http server) immediately after they are
/// initialized, _before_ the `self.build(..)` method has been called.
///
/// Types may be elided and the compiler will infer them once all required methods have been
/// called.
///
/// If type inference errors are raised, ensure all necessary components have been initialized. For
/// example, the compiler will be unable to infer `T::Store` unless `self.disk_store(..)` or
/// `self.memory_store(..)` has been called.
pub struct ClientBuilder<T: BeaconChainTypes> {
slot_clock: Option<T::SlotClock>,
store: Option<Arc<T::Store>>,
runtime_context: Option<RuntimeContext<T::EthSpec>>,
chain_spec: Option<ChainSpec>,
beacon_chain_builder: Option<BeaconChainBuilder<T>>,
beacon_chain: Option<Arc<BeaconChain<T>>>,
eth1_service: Option<Eth1Service>,
exit_signals: Vec<Signal>,
event_handler: Option<T::EventHandler>,
libp2p_network: Option<Arc<NetworkService<T>>>,
libp2p_network_send: Option<UnboundedSender<NetworkMessage>>,
http_listen_addr: Option<SocketAddr>,
websocket_listen_addr: Option<SocketAddr>,
eth_spec_instance: T::EthSpec,
}
impl<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
ClientBuilder<Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>>
where
TStore: Store + 'static,
TSlotClock: SlotClock + Clone + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Instantiates a new, empty builder.
///
/// The `eth_spec_instance` parameter is used to concretize `TEthSpec`.
pub fn new(eth_spec_instance: TEthSpec) -> Self {
Self {
slot_clock: None,
store: None,
runtime_context: None,
chain_spec: None,
beacon_chain_builder: None,
beacon_chain: None,
eth1_service: None,
exit_signals: vec![],
event_handler: None,
libp2p_network: None,
libp2p_network_send: None,
http_listen_addr: None,
websocket_listen_addr: None,
eth_spec_instance,
}
}
/// Specifies the runtime context (tokio executor, logger, etc) for client services.
pub fn runtime_context(mut self, context: RuntimeContext<TEthSpec>) -> Self {
self.runtime_context = Some(context);
self
}
/// Specifies the `ChainSpec`.
pub fn chain_spec(mut self, spec: ChainSpec) -> Self {
self.chain_spec = Some(spec);
self
}
/// Initializes the `BeaconChainBuilder`. The `build_beacon_chain` method will need to be
/// called later in order to actually instantiate the `BeaconChain`.
pub fn beacon_chain_builder(
mut self,
client_genesis: ClientGenesis,
config: Eth1Config,
) -> impl Future<Item = Self, Error = String> {
let store = self.store.clone();
let chain_spec = self.chain_spec.clone();
let runtime_context = self.runtime_context.clone();
let eth_spec_instance = self.eth_spec_instance.clone();
future::ok(())
.and_then(move |()| {
let store = store
.ok_or_else(|| "beacon_chain_start_method requires a store".to_string())?;
let context = runtime_context
.ok_or_else(|| "beacon_chain_start_method requires a log".to_string())?
.service_context("beacon");
let spec = chain_spec
.ok_or_else(|| "beacon_chain_start_method requires a chain spec".to_string())?;
let builder = BeaconChainBuilder::new(eth_spec_instance)
.logger(context.log.clone())
.store(store.clone())
.custom_spec(spec.clone());
Ok((builder, spec, context))
})
.and_then(move |(builder, spec, context)| {
let genesis_state_future: Box<dyn Future<Item = _, Error = _> + Send> =
match client_genesis {
ClientGenesis::Interop {
validator_count,
genesis_time,
} => {
let keypairs = generate_deterministic_keypairs(validator_count);
let result = interop_genesis_state(&keypairs, genesis_time, &spec);
let future = result
.and_then(move |genesis_state| builder.genesis_state(genesis_state))
.into_future()
.map(|v| (v, None));
Box::new(future)
}
ClientGenesis::SszFile { path } => {
let result = state_from_ssz_file(path);
let future = result
.and_then(move |genesis_state| builder.genesis_state(genesis_state))
.into_future()
.map(|v| (v, None));
Box::new(future)
}
ClientGenesis::DepositContract => {
let genesis_service = Eth1GenesisService::new(
// Some of the configuration options for `Eth1Config` are
// hard-coded when listening for genesis from the deposit contract.
//
// The idea is that the `Eth1Config` supplied to this function
// (`config`) is intended for block production duties (i.e.,
// listening for deposit events and voting on eth1 data) and that
// we can make listening for genesis more efficient if we modify
// some params.
Eth1Config {
// Truncating the block cache makes searching for genesis more
// complicated.
block_cache_truncation: None,
// Scan large ranges of blocks when awaiting genesis.
blocks_per_log_query: 1_000,
// Only perform a single log request each time the eth1 node is
// polled.
//
// For small testnets this makes finding genesis much faster,
// as it usually happens within 1,000 blocks.
max_log_requests_per_update: Some(1),
// Only perform a single block request each time the eth1 node
// is polled.
//
// For small testnets, this is much faster as they do not have
// a `MIN_GENESIS_SECONDS`, so after `MIN_GENESIS_VALIDATOR_COUNT`
// has been reached only a single block needs to be read.
max_blocks_per_update: Some(1),
..config
},
context.log.clone(),
);
let future = genesis_service
.wait_for_genesis_state(
Duration::from_millis(ETH1_GENESIS_UPDATE_INTERVAL_MILLIS),
context.eth2_config().spec.clone(),
)
.and_then(move |genesis_state| builder.genesis_state(genesis_state))
.map(|v| (v, Some(genesis_service.into_core_service())));
Box::new(future)
}
ClientGenesis::RemoteNode { server, .. } => {
let future = Bootstrapper::connect(server.to_string(), &context.log)
.map_err(|e| {
format!("Failed to initialize bootstrap client: {}", e)
})
.into_future()
.and_then(|bootstrapper| {
let (genesis_state, _genesis_block) =
bootstrapper.genesis().map_err(|e| {
format!("Failed to bootstrap genesis state: {}", e)
})?;
builder.genesis_state(genesis_state)
})
.map(|v| (v, None));
Box::new(future)
}
ClientGenesis::Resume => {
let future = builder.resume_from_db().into_future().map(|v| (v, None));
Box::new(future)
}
};
genesis_state_future
})
.map(move |(beacon_chain_builder, eth1_service_option)| {
self.eth1_service = eth1_service_option;
self.beacon_chain_builder = Some(beacon_chain_builder);
self
})
}
/// Immediately starts the libp2p networking stack.
pub fn libp2p_network(mut self, config: &NetworkConfig) -> Result<Self, String> {
let beacon_chain = self
.beacon_chain
.clone()
.ok_or_else(|| "libp2p_network requires a beacon chain")?;
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "libp2p_network requires a runtime_context")?
.service_context("network");
let (network, network_send) =
NetworkService::new(beacon_chain, config, &context.executor, context.log)
.map_err(|e| format!("Failed to start libp2p network: {:?}", e))?;
self.libp2p_network = Some(network);
self.libp2p_network_send = Some(network_send);
Ok(self)
}
/// Immediately starts the gRPC server (gRPC is soon to be deprecated).
pub fn grpc_server(mut self, config: &RpcConfig) -> Result<Self, String> {
let beacon_chain = self
.beacon_chain
.clone()
.ok_or_else(|| "grpc_server requires a beacon chain")?;
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "grpc_server requires a runtime_context")?
.service_context("grpc");
let network_send = self
.libp2p_network_send
.clone()
.ok_or_else(|| "grpc_server requires a libp2p network")?;
let exit_signal = rpc::start_server(
config,
&context.executor,
network_send,
beacon_chain,
context.log,
);
self.exit_signals.push(exit_signal);
Ok(self)
}
/// Immediately starts the beacon node REST API http server.
pub fn http_server(
mut self,
client_config: &ClientConfig,
eth2_config: &Eth2Config,
) -> Result<Self, String> {
let beacon_chain = self
.beacon_chain
.clone()
.ok_or_else(|| "grpc_server requires a beacon chain")?;
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "http_server requires a runtime_context")?
.service_context("http");
let network = self
.libp2p_network
.clone()
.ok_or_else(|| "grpc_server requires a libp2p network")?;
let network_send = self
.libp2p_network_send
.clone()
.ok_or_else(|| "grpc_server requires a libp2p network sender")?;
let network_info = rest_api::NetworkInfo {
network_service: network.clone(),
network_chan: network_send.clone(),
};
let (exit_signal, listening_addr) = rest_api::start_server(
&client_config.rest_api,
&context.executor,
beacon_chain.clone(),
network_info,
client_config.db_path().expect("unable to read datadir"),
eth2_config.clone(),
context.log,
)
.map_err(|e| format!("Failed to start HTTP API: {:?}", e))?;
self.exit_signals.push(exit_signal);
self.http_listen_addr = Some(listening_addr);
Ok(self)
}
/// Immediately starts the service that periodically logs about the libp2p peer count.
pub fn peer_count_notifier(mut self) -> Result<Self, String> {
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "peer_count_notifier requires a runtime_context")?
.service_context("peer_notifier");
let log = context.log.clone();
let log_2 = context.log.clone();
let network = self
.libp2p_network
.clone()
.ok_or_else(|| "peer_notifier requires a libp2p network")?;
let (exit_signal, exit) = exit_future::signal();
self.exit_signals.push(exit_signal);
let interval_future = Interval::new(
Instant::now(),
Duration::from_secs(NOTIFIER_INTERVAL_SECONDS),
)
.map_err(move |e| error!(log_2, "Notifier timer failed"; "error" => format!("{:?}", e)))
.for_each(move |_| {
// NOTE: Panics if libp2p is poisoned.
let connected_peer_count = network.libp2p_service().lock().swarm.connected_peers();
debug!(log, "Connected peer status"; "peer_count" => connected_peer_count);
if connected_peer_count <= WARN_PEER_COUNT {
warn!(log, "Low peer count"; "peer_count" => connected_peer_count);
}
Ok(())
});
context
.executor
.spawn(exit.until(interval_future).map(|_| ()));
Ok(self)
}
/// Immediately starts the service that periodically logs information each slot.
pub fn slot_notifier(mut self) -> Result<Self, String> {
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "slot_notifier requires a runtime_context")?
.service_context("slot_notifier");
let log = context.log.clone();
let log_2 = log.clone();
let beacon_chain = self
.beacon_chain
.clone()
.ok_or_else(|| "slot_notifier requires a libp2p network")?;
let spec = self
.chain_spec
.clone()
.ok_or_else(|| "slot_notifier requires a chain spec".to_string())?;
let slot_duration = Duration::from_millis(spec.milliseconds_per_slot);
let duration_to_next_slot = beacon_chain
.slot_clock
.duration_to_next_slot()
.ok_or_else(|| "slot_notifier unable to determine time to next slot")?;
let (exit_signal, exit) = exit_future::signal();
self.exit_signals.push(exit_signal);
let interval_future = Interval::new(Instant::now() + duration_to_next_slot, slot_duration)
.map_err(move |e| error!(log_2, "Slot timer failed"; "error" => format!("{:?}", e)))
.for_each(move |_| {
let best_slot = beacon_chain.head().beacon_block.slot;
let latest_block_root = beacon_chain.head().beacon_block_root;
if let Ok(current_slot) = beacon_chain.slot() {
info!(
log,
"Slot start";
"skip_slots" => current_slot.saturating_sub(best_slot),
"best_block_root" => format!("{}", latest_block_root),
"best_block_slot" => best_slot,
"slot" => current_slot,
)
} else {
error!(
log,
"Beacon chain running whilst slot clock is unavailable."
);
};
Ok(())
});
context
.executor
.spawn(exit.until(interval_future).map(|_| ()));
Ok(self)
}
/// Consumers the builder, returning a `Client` if all necessary components have been
/// specified.
///
/// If type inference errors are being raised, see the comment on the definition of `Self`.
pub fn build(
self,
) -> Client<Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>> {
Client {
beacon_chain: self.beacon_chain,
libp2p_network: self.libp2p_network,
http_listen_addr: self.http_listen_addr,
websocket_listen_addr: self.websocket_listen_addr,
_exit_signals: self.exit_signals,
}
}
}
impl<TStore, TSlotClock, TEth1Backend, TEthSpec, TEventHandler>
ClientBuilder<
Witness<
TStore,
TSlotClock,
ThreadSafeReducedTree<TStore, TEthSpec>,
TEth1Backend,
TEthSpec,
TEventHandler,
>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + Clone + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Consumes the internal `BeaconChainBuilder`, attaching the resulting `BeaconChain` to self.
pub fn build_beacon_chain(mut self) -> Result<Self, String> {
let chain = self
.beacon_chain_builder
.ok_or_else(|| "beacon_chain requires a beacon_chain_builder")?
.event_handler(
self.event_handler
.ok_or_else(|| "beacon_chain requires an event handler")?,
)
.slot_clock(
self.slot_clock
.clone()
.ok_or_else(|| "beacon_chain requires a slot clock")?,
)
.empty_reduced_tree_fork_choice()
.map_err(|e| format!("Failed to init fork choice: {}", e))?
.build()
.map_err(|e| format!("Failed to build beacon chain: {}", e))?;
self.beacon_chain = Some(Arc::new(chain));
self.beacon_chain_builder = None;
self.event_handler = None;
Ok(self)
}
}
impl<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec>
ClientBuilder<
Witness<TStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, WebSocketSender<TEthSpec>>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
{
/// Specifies that the `BeaconChain` should publish events using the WebSocket server.
pub fn websocket_event_handler(mut self, config: WebSocketConfig) -> Result<Self, String> {
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "websocket_event_handler requires a runtime_context")?
.service_context("ws");
let (sender, exit_signal, listening_addr): (
WebSocketSender<TEthSpec>,
Option<_>,
Option<_>,
) = if config.enabled {
let (sender, exit, listening_addr) =
websocket_server::start_server(&config, &context.executor, &context.log)?;
(sender, Some(exit), Some(listening_addr))
} else {
(WebSocketSender::dummy(), None, None)
};
if let Some(signal) = exit_signal {
self.exit_signals.push(signal);
}
self.event_handler = Some(sender);
self.websocket_listen_addr = listening_addr;
Ok(self)
}
}
impl<TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
ClientBuilder<Witness<DiskStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>>
where
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<DiskStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Specifies that the `Client` should use a `DiskStore` database.
pub fn disk_store(mut self, path: &Path) -> Result<Self, String> {
let store = DiskStore::open(path)
.map_err(|e| format!("Unable to open database: {:?}", e).to_string())?;
self.store = Some(Arc::new(store));
Ok(self)
}
}
impl<TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
ClientBuilder<
Witness<MemoryStore, TSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>,
>
where
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<MemoryStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Specifies that the `Client` should use a `MemoryStore` database.
pub fn memory_store(mut self) -> Self {
let store = MemoryStore::open();
self.store = Some(Arc::new(store));
self
}
}
impl<TStore, TSlotClock, TLmdGhost, TEthSpec, TEventHandler>
ClientBuilder<
Witness<
TStore,
TSlotClock,
TLmdGhost,
CachingEth1Backend<TEthSpec, TStore>,
TEthSpec,
TEventHandler,
>,
>
where
TStore: Store + 'static,
TSlotClock: SlotClock + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Specifies that the `BeaconChain` should cache eth1 blocks/logs from a remote eth1 node
/// (e.g., Parity/Geth) and refer to that cache when collecting deposits or eth1 votes during
/// block production.
pub fn caching_eth1_backend(mut self, config: Eth1Config) -> Result<Self, String> {
let context = self
.runtime_context
.as_ref()
.ok_or_else(|| "caching_eth1_backend requires a runtime_context")?
.service_context("eth1_rpc");
let beacon_chain_builder = self
.beacon_chain_builder
.ok_or_else(|| "caching_eth1_backend requires a beacon_chain_builder")?;
let store = self
.store
.clone()
.ok_or_else(|| "caching_eth1_backend requires a store".to_string())?;
let backend = if let Some(eth1_service_from_genesis) = self.eth1_service {
eth1_service_from_genesis.update_config(config.clone())?;
CachingEth1Backend::from_service(eth1_service_from_genesis, store)
} else {
CachingEth1Backend::new(config, context.log, store)
};
self.eth1_service = None;
let exit = {
let (tx, rx) = exit_future::signal();
self.exit_signals.push(tx);
rx
};
// Starts the service that connects to an eth1 node and periodically updates caches.
context.executor.spawn(backend.start(exit));
self.beacon_chain_builder = Some(beacon_chain_builder.eth1_backend(Some(backend)));
Ok(self)
}
/// Do not use any eth1 backend. The client will not be able to produce beacon blocks.
pub fn no_eth1_backend(mut self) -> Result<Self, String> {
let beacon_chain_builder = self
.beacon_chain_builder
.ok_or_else(|| "caching_eth1_backend requires a beacon_chain_builder")?;
self.beacon_chain_builder = Some(beacon_chain_builder.no_eth1_backend());
Ok(self)
}
/// Use an eth1 backend that can produce blocks but is not connected to an Eth1 node.
///
/// This backend will never produce deposits so it's impossible to add validators after
/// genesis. The `Eth1Data` votes will be deterministic junk data.
///
/// ## Notes
///
/// The client is given the `CachingEth1Backend` type, but the http backend is never started and the
/// caches are never used.
pub fn dummy_eth1_backend(mut self) -> Result<Self, String> {
let beacon_chain_builder = self
.beacon_chain_builder
.ok_or_else(|| "caching_eth1_backend requires a beacon_chain_builder")?;
self.beacon_chain_builder = Some(beacon_chain_builder.dummy_eth1_backend()?);
Ok(self)
}
}
impl<TStore, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>
ClientBuilder<
Witness<TStore, SystemTimeSlotClock, TLmdGhost, TEth1Backend, TEthSpec, TEventHandler>,
>
where
TStore: Store + 'static,
TLmdGhost: LmdGhost<TStore, TEthSpec> + 'static,
TEth1Backend: Eth1ChainBackend<TEthSpec> + 'static,
TEthSpec: EthSpec + 'static,
TEventHandler: EventHandler<TEthSpec> + 'static,
{
/// Specifies that the slot clock should read the time from the computers system clock.
pub fn system_time_slot_clock(mut self) -> Result<Self, String> {
let beacon_chain_builder = self
.beacon_chain_builder
.as_ref()
.ok_or_else(|| "system_time_slot_clock requires a beacon_chain_builder")?;
let genesis_time = beacon_chain_builder
.finalized_checkpoint
.as_ref()
.ok_or_else(|| "system_time_slot_clock requires an initialized beacon state")?
.beacon_state
.genesis_time;
let spec = self
.chain_spec
.clone()
.ok_or_else(|| "system_time_slot_clock requires a chain spec".to_string())?;
let slot_clock = SystemTimeSlotClock::new(
spec.genesis_slot,
Duration::from_secs(genesis_time),
Duration::from_millis(spec.milliseconds_per_slot),
);
self.slot_clock = Some(slot_clock);
Ok(self)
}
}

119
beacon_node/client/src/config.rs
View File

@ -9,6 +9,32 @@ use std::sync::Mutex;
/// The number initial validators when starting the `Minimal`.
const TESTNET_SPEC_CONSTANTS: &str = "minimal";
/// Defines how the client should initialize the `BeaconChain` and other components.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ClientGenesis {
/// Reads the genesis state and other persisted data from the `Store`.
Resume,
/// Creates a genesis state as per the 2019 Canada interop specifications.
Interop {
validator_count: usize,
genesis_time: u64,
},
/// Connects to an eth1 node and waits until it can create the genesis state from the deposit
/// contract.
DepositContract,
/// Loads the genesis state from a SSZ-encoded `BeaconState` file.
SszFile { path: PathBuf },
/// Connects to another Lighthouse instance and reads the genesis state and other data via the
/// HTTP API.
RemoteNode { server: String, port: Option<u16> },
}
impl Default for ClientGenesis {
fn default() -> Self {
Self::DepositContract
}
}
/// The core configuration of a Lighthouse beacon node.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Config {
@ -17,74 +43,20 @@ pub struct Config {
db_name: String,
pub log_file: PathBuf,
pub spec_constants: String,
/// Defines how we should initialize a BeaconChain instances.
/// If true, the node will use co-ordinated junk for eth1 values.
///
/// This field is not serialized, there for it will not be written to (or loaded from) config
/// files. It can only be configured via the CLI.
/// This is the method used for the 2019 client interop in Canada.
pub dummy_eth1_backend: bool,
pub sync_eth1_chain: bool,
#[serde(skip)]
pub beacon_chain_start_method: BeaconChainStartMethod,
pub eth1_backend_method: Eth1BackendMethod,
/// The `genesis` field is not serialized or deserialized by `serde` to ensure it is defined
/// via the CLI at runtime, instead of from a configuration file saved to disk.
pub genesis: ClientGenesis,
pub network: network::NetworkConfig,
pub rpc: rpc::RPCConfig,
pub rest_api: rest_api::ApiConfig,
pub rpc: rpc::Config,
pub rest_api: rest_api::Config,
pub websocket_server: websocket_server::Config,
}
/// Defines how the client should initialize a BeaconChain.
///
/// In general, there are two methods:
/// - resuming a new chain, or
/// - initializing a new one.
#[derive(Debug, Clone)]
pub enum BeaconChainStartMethod {
/// Resume from an existing BeaconChain, loaded from the existing local database.
Resume,
/// Resume from an existing BeaconChain, loaded from the existing local database.
Mainnet,
/// Create a new beacon chain that can connect to mainnet.
///
/// Set the genesis time to be the start of the previous 30-minute window.
RecentGenesis {
validator_count: usize,
minutes: u64,
},
/// Create a new beacon chain with `genesis_time` and `validator_count` validators, all with well-known
/// secret keys.
Generated {
validator_count: usize,
genesis_time: u64,
},
/// Create a new beacon chain by loading a YAML-encoded genesis state from a file.
Yaml { file: PathBuf },
/// Create a new beacon chain by loading a SSZ-encoded genesis state from a file.
Ssz { file: PathBuf },
/// Create a new beacon chain by loading a JSON-encoded genesis state from a file.
Json { file: PathBuf },
/// Create a new beacon chain by using a HTTP server (running our REST-API) to load genesis and
/// finalized states and blocks.
HttpBootstrap { server: String, port: Option<u16> },
}
impl Default for BeaconChainStartMethod {
fn default() -> Self {
BeaconChainStartMethod::Resume
}
}
/// Defines which Eth1 backend the client should use.
#[derive(Debug, Clone, Serialize, Deserialize)]
#[serde(tag = "type")]
pub enum Eth1BackendMethod {
/// Use the mocked eth1 backend used in interop testing
Interop,
/// Use a web3 connection to a running Eth1 node.
Web3 { server: String },
}
impl Default for Eth1BackendMethod {
fn default() -> Self {
Eth1BackendMethod::Interop
}
pub eth1: eth1::Config,
}
impl Default for Config {
@ -94,13 +66,15 @@ impl Default for Config {
log_file: PathBuf::from(""),
db_type: "disk".to_string(),
db_name: "chain_db".to_string(),
genesis: <_>::default(),
network: NetworkConfig::new(),
rpc: <_>::default(),
rest_api: <_>::default(),
websocket_server: <_>::default(),
spec_constants: TESTNET_SPEC_CONSTANTS.into(),
beacon_chain_start_method: <_>::default(),
eth1_backend_method: <_>::default(),
dummy_eth1_backend: false,
sync_eth1_chain: false,
eth1: <_>::default(),
}
}
}
@ -183,3 +157,16 @@ impl Config {
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
use toml;
#[test]
fn serde() {
let config = Config::default();
let serialized = toml::to_string(&config).expect("should serde encode default config");
toml::from_str::<Config>(&serialized).expect("should serde decode default config");
}
}

333
beacon_node/client/src/lib.rs
View File

@ -2,327 +2,58 @@ extern crate slog;
mod config;
pub mod builder;
pub mod error;
pub mod notifier;
use beacon_chain::{
lmd_ghost::ThreadSafeReducedTree, slot_clock::SystemTimeSlotClock, store::Store,
test_utils::generate_deterministic_keypairs, BeaconChain, BeaconChainBuilder,
};
use beacon_chain::BeaconChain;
use exit_future::Signal;
use futures::{future::Future, Stream};
use network::Service as NetworkService;
use rest_api::NetworkInfo;
use slog::{crit, debug, error, info, o};
use slot_clock::SlotClock;
use std::marker::PhantomData;
use std::net::SocketAddr;
use std::sync::Arc;
use std::time::{Duration, Instant, SystemTime, UNIX_EPOCH};
use tokio::runtime::TaskExecutor;
use tokio::timer::Interval;
use types::EthSpec;
use websocket_server::WebSocketSender;
pub use beacon_chain::{BeaconChainTypes, Eth1ChainBackend, InteropEth1ChainBackend};
pub use config::{BeaconChainStartMethod, Config as ClientConfig, Eth1BackendMethod};
pub use beacon_chain::{BeaconChainTypes, Eth1ChainBackend};
pub use builder::ClientBuilder;
pub use config::{ClientGenesis, Config as ClientConfig};
pub use eth2_config::Eth2Config;
#[derive(Clone)]
pub struct RuntimeBeaconChainTypes<S: Store, E: EthSpec> {
_phantom_s: PhantomData<S>,
_phantom_e: PhantomData<E>,
/// The core "beacon node" client.
///
/// Holds references to running services, cleanly shutting them down when dropped.
pub struct Client<T: BeaconChainTypes> {
beacon_chain: Option<Arc<BeaconChain<T>>>,
libp2p_network: Option<Arc<NetworkService<T>>>,
http_listen_addr: Option<SocketAddr>,
websocket_listen_addr: Option<SocketAddr>,
/// Exit signals will "fire" when dropped, causing each service to exit gracefully.
_exit_signals: Vec<Signal>,
}
impl<S, E> BeaconChainTypes for RuntimeBeaconChainTypes<S, E>
where
S: Store + 'static,
E: EthSpec,
{
type Store = S;
type SlotClock = SystemTimeSlotClock;
type LmdGhost = ThreadSafeReducedTree<S, E>;
type Eth1Chain = InteropEth1ChainBackend<E>;
type EthSpec = E;
type EventHandler = WebSocketSender<E>;
impl<T: BeaconChainTypes> Client<T> {
/// Returns an `Arc` reference to the client's `BeaconChain`, if it was started.
pub fn beacon_chain(&self) -> Option<Arc<BeaconChain<T>>> {
self.beacon_chain.clone()
}
/// Main beacon node client service. This provides the connection and initialisation of the clients
/// sub-services in multiple threads.
pub struct Client<S, E>
where
S: Store + Clone + 'static,
E: EthSpec,
{
/// Configuration for the lighthouse client.
_client_config: ClientConfig,
/// The beacon chain for the running client.
beacon_chain: Arc<BeaconChain<RuntimeBeaconChainTypes<S, E>>>,
/// Reference to the network service.
pub network: Arc<NetworkService<RuntimeBeaconChainTypes<S, E>>>,
/// Signal to terminate the RPC server.
pub rpc_exit_signal: Option<Signal>,
/// Signal to terminate the slot timer.
pub slot_timer_exit_signal: Option<Signal>,
/// Signal to terminate the API
pub api_exit_signal: Option<Signal>,
/// Signal to terminate the websocket server
pub websocket_exit_signal: Option<Signal>,
/// The clients logger.
log: slog::Logger,
/// Returns the address of the client's HTTP API server, if it was started.
pub fn http_listen_addr(&self) -> Option<SocketAddr> {
self.http_listen_addr
}
impl<S, E> Client<S, E>
where
S: Store + Clone + 'static,
E: EthSpec,
{
/// Generate an instance of the client. Spawn and link all internal sub-processes.
pub fn new(
client_config: ClientConfig,
eth2_config: Eth2Config,
store: S,
log: slog::Logger,
executor: &TaskExecutor,
) -> error::Result<Self> {
let store = Arc::new(store);
let milliseconds_per_slot = eth2_config.spec.milliseconds_per_slot;
let spec = &eth2_config.spec.clone();
let beacon_chain_builder = match &client_config.beacon_chain_start_method {
BeaconChainStartMethod::Resume => {
info!(
log,
"Starting beacon chain";
"method" => "resume"
);
BeaconChainBuilder::from_store(spec.clone(), log.clone())
}
BeaconChainStartMethod::Mainnet => {
crit!(log, "No mainnet beacon chain startup specification.");
return Err("Mainnet launch is not yet announced.".into());
}
BeaconChainStartMethod::RecentGenesis {
validator_count,
minutes,
} => {
info!(
log,
"Starting beacon chain";
"validator_count" => validator_count,
"minutes" => minutes,
"method" => "recent"
);
BeaconChainBuilder::recent_genesis(
&generate_deterministic_keypairs(*validator_count),
*minutes,
spec.clone(),
log.clone(),
)?
}
BeaconChainStartMethod::Generated {
validator_count,
genesis_time,
} => {
info!(
log,
"Starting beacon chain";
"validator_count" => validator_count,
"genesis_time" => genesis_time,
"method" => "quick"
);
BeaconChainBuilder::quick_start(
*genesis_time,
&generate_deterministic_keypairs(*validator_count),
spec.clone(),
log.clone(),
)?
}
BeaconChainStartMethod::Yaml { file } => {
info!(
log,
"Starting beacon chain";
"file" => format!("{:?}", file),
"method" => "yaml"
);
BeaconChainBuilder::yaml_state(file, spec.clone(), log.clone())?
}
BeaconChainStartMethod::Ssz { file } => {
info!(
log,
"Starting beacon chain";
"file" => format!("{:?}", file),
"method" => "ssz"
);
BeaconChainBuilder::ssz_state(file, spec.clone(), log.clone())?
}
BeaconChainStartMethod::Json { file } => {
info!(
log,
"Starting beacon chain";
"file" => format!("{:?}", file),
"method" => "json"
);
BeaconChainBuilder::json_state(file, spec.clone(), log.clone())?
}
BeaconChainStartMethod::HttpBootstrap { server, port } => {
info!(
log,
"Starting beacon chain";
"port" => port,
"server" => server,
"method" => "bootstrap"
);
BeaconChainBuilder::http_bootstrap(server, spec.clone(), log.clone())?
}
};
let eth1_backend =
InteropEth1ChainBackend::new(String::new()).map_err(|e| format!("{:?}", e))?;
// Start the websocket server.
let (websocket_sender, websocket_exit_signal): (WebSocketSender<E>, Option<_>) =
if client_config.websocket_server.enabled {
let (sender, exit) = websocket_server::start_server(
&client_config.websocket_server,
executor,
&log,
)?;
(sender, Some(exit))
} else {
(WebSocketSender::dummy(), None)
};
let beacon_chain: Arc<BeaconChain<RuntimeBeaconChainTypes<S, E>>> = Arc::new(
beacon_chain_builder
.build(store, eth1_backend, websocket_sender)
.map_err(error::Error::from)?,
);
let since_epoch = SystemTime::now()
.duration_since(UNIX_EPOCH)
.map_err(|e| format!("Unable to read system time: {}", e))?;
let since_genesis = Duration::from_secs(beacon_chain.head().beacon_state.genesis_time);
if since_genesis > since_epoch {
info!(
log,
"Starting node prior to genesis";
"now" => since_epoch.as_secs(),
"genesis_seconds" => since_genesis.as_secs(),
);
/// Returns the address of the client's WebSocket API server, if it was started.
pub fn websocket_listen_addr(&self) -> Option<SocketAddr> {
self.websocket_listen_addr
}
let network_config = &client_config.network;
let (network, network_send) =
NetworkService::new(beacon_chain.clone(), network_config, executor, log.clone())?;
// spawn the RPC server
let rpc_exit_signal = if client_config.rpc.enabled {
Some(rpc::start_server(
&client_config.rpc,
executor,
network_send.clone(),
beacon_chain.clone(),
&log,
))
} else {
None
};
// Start the `rest_api` service
let api_exit_signal = if client_config.rest_api.enabled {
let network_info = NetworkInfo {
network_service: network.clone(),
network_chan: network_send.clone(),
};
match rest_api::start_server(
&client_config.rest_api,
executor,
beacon_chain.clone(),
network_info,
client_config.db_path().expect("unable to read datadir"),
eth2_config.clone(),
&log,
) {
Ok(s) => Some(s),
Err(e) => {
error!(log, "API service failed to start."; "error" => format!("{:?}",e));
None
}
}
} else {
None
};
let (slot_timer_exit_signal, exit) = exit_future::signal();
if let Some(duration_to_next_slot) = beacon_chain.slot_clock.duration_to_next_slot() {
// set up the validator work interval - start at next slot and proceed every slot
let interval = {
// Set the interval to start at the next slot, and every slot after
let slot_duration = Duration::from_millis(milliseconds_per_slot);
//TODO: Handle checked add correctly
Interval::new(Instant::now() + duration_to_next_slot, slot_duration)
};
let chain = beacon_chain.clone();
let log = log.new(o!("Service" => "SlotTimer"));
executor.spawn(
exit.until(
interval
.for_each(move |_| {
log_new_slot(&chain, &log);
Ok(())
})
.map_err(|_| ()),
)
.map(|_| ()),
);
}
Ok(Client {
_client_config: client_config,
beacon_chain,
rpc_exit_signal,
slot_timer_exit_signal: Some(slot_timer_exit_signal),
api_exit_signal,
websocket_exit_signal,
log,
network,
})
/// Returns the port of the client's libp2p stack, if it was started.
pub fn libp2p_listen_port(&self) -> Option<u16> {
self.libp2p_network.as_ref().map(|n| n.listen_port())
}
}
impl<S: Store + Clone, E: EthSpec> Drop for Client<S, E> {
impl<T: BeaconChainTypes> Drop for Client<T> {
fn drop(&mut self) {
// Save the beacon chain to it's store before dropping.
let _result = self.beacon_chain.persist();
if let Some(beacon_chain) = &self.beacon_chain {
let _result = beacon_chain.persist();
}
}
fn log_new_slot<T: BeaconChainTypes>(chain: &Arc<BeaconChain<T>>, log: &slog::Logger) {
let best_slot = chain.head().beacon_block.slot;
let latest_block_root = chain.head().beacon_block_root;
if let Ok(current_slot) = chain.slot() {
info!(
log,
"Slot start";
"best_slot" => best_slot,
"slot" => current_slot,
);
debug!(
log,
"Slot info";
"skip_slots" => current_slot.saturating_sub(best_slot),
"best_block_root" => format!("{}", latest_block_root),
"slot" => current_slot,
);
} else {
error!(
log,
"Beacon chain running whilst slot clock is unavailable."
);
};
}

58
beacon_node/client/src/notifier.rs
View File

@ -1,58 +0,0 @@
use crate::Client;
use exit_future::Exit;
use futures::{Future, Stream};
use slog::{debug, o, warn};
use std::time::{Duration, Instant};
use store::Store;
use tokio::runtime::TaskExecutor;
use tokio::timer::Interval;
use types::EthSpec;
/// The interval between heartbeat events.
pub const HEARTBEAT_INTERVAL_SECONDS: u64 = 15;
/// Create a warning log whenever the peer count is at or below this value.
pub const WARN_PEER_COUNT: usize = 1;
/// Spawns a thread that can be used to run code periodically, on `HEARTBEAT_INTERVAL_SECONDS`
/// durations.
///
/// Presently unused, but remains for future use.
pub fn run<S, E>(client: &Client<S, E>, executor: TaskExecutor, exit: Exit)
where
S: Store + Clone + 'static,
E: EthSpec,
{
// notification heartbeat
let interval = Interval::new(
Instant::now(),
Duration::from_secs(HEARTBEAT_INTERVAL_SECONDS),
);
let log = client.log.new(o!("Service" => "Notifier"));
let libp2p = client.network.libp2p_service();
let heartbeat = move |_| {
// Number of libp2p (not discv5) peers connected.
//
// Panics if libp2p is poisoned.
let connected_peer_count = libp2p.lock().swarm.connected_peers();
debug!(log, "Connected peer status"; "peer_count" => connected_peer_count);
if connected_peer_count <= WARN_PEER_COUNT {
warn!(log, "Low peer count"; "peer_count" => connected_peer_count);
}
Ok(())
};
// map error and spawn
let err_log = client.log.clone();
let heartbeat_interval = interval
.map_err(move |e| debug!(err_log, "Timer error {}", e))
.for_each(heartbeat);
executor.spawn(exit.until(heartbeat_interval).map(|_| ()));
}

29
beacon_node/eth1/Cargo.toml Normal file
View File

@ -0,0 +1,29 @@
[package]
name = "eth1"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dev-dependencies]
eth1_test_rig = { path = "../../tests/eth1_test_rig" }
environment = { path = "../../lighthouse/environment" }
toml = "^0.5"
web3 = "0.8.0"
[dependencies]
reqwest = "0.9"
futures = "0.1.25"
serde_json = "1.0"
serde = { version = "1.0", features = ["derive"] }
hex = "0.4"
types = { path = "../../eth2/types"}
merkle_proof = { path = "../../eth2/utils/merkle_proof"}
eth2_ssz = { path = "../../eth2/utils/ssz"}
tree_hash = { path = "../../eth2/utils/tree_hash"}
eth2_hashing = { path = "../../eth2/utils/eth2_hashing"}
parking_lot = "0.7"
slog = "^2.2.3"
tokio = "0.1.17"
state_processing = { path = "../../eth2/state_processing" }
exit-future = "0.1.4"
libflate = "0.1"

271
beacon_node/eth1/src/block_cache.rs Normal file
View File

@ -0,0 +1,271 @@
use std::ops::RangeInclusive;
use types::{Eth1Data, Hash256};
#[derive(Debug, PartialEq, Clone)]
pub enum Error {
/// The timestamp of each block equal to or later than the block prior to it.
InconsistentTimestamp { parent: u64, child: u64 },
/// Some `Eth1Block` was provided with the same block number but different data. The source
/// of eth1 data is inconsistent.
Conflicting(u64),
/// The given block was not one block number higher than the higest known block number.
NonConsecutive { given: u64, expected: u64 },
/// Some invariant was violated, there is a likely bug in the code.
Internal(String),
}
/// A block of the eth1 chain.
///
/// Contains all information required to add a `BlockCache` entry.
#[derive(Debug, PartialEq, Clone, Eq, Hash)]
pub struct Eth1Block {
pub hash: Hash256,
pub timestamp: u64,
pub number: u64,
pub deposit_root: Option<Hash256>,
pub deposit_count: Option<u64>,
}
impl Eth1Block {
pub fn eth1_data(self) -> Option<Eth1Data> {
Some(Eth1Data {
deposit_root: self.deposit_root?,
deposit_count: self.deposit_count?,
block_hash: self.hash,
})
}
}
/// Stores block and deposit contract information and provides queries based upon the block
/// timestamp.
#[derive(Debug, PartialEq, Clone, Default)]
pub struct BlockCache {
blocks: Vec<Eth1Block>,
}
impl BlockCache {
/// Returns the number of blocks stored in `self`.
pub fn len(&self) -> usize {
self.blocks.len()
}
/// True if the cache does not store any blocks.
pub fn is_empty(&self) -> bool {
self.blocks.is_empty()
}
/// Returns the highest block number stored.
pub fn highest_block_number(&self) -> Option<u64> {
self.blocks.last().map(|block| block.number)
}
/// Returns an iterator over all blocks.
///
/// Blocks a guaranteed to be returned with;
///
/// - Monotonically increasing block numbers.
/// - Non-uniformly increasing block timestamps.
pub fn iter(&self) -> impl DoubleEndedIterator<Item = &Eth1Block> + Clone {
self.blocks.iter()
}
/// Shortens the cache, keeping the latest (by block number) `len` blocks while dropping the
/// rest.
///
/// If `len` is greater than the vector's current length, this has no effect.
pub fn truncate(&mut self, len: usize) {
if len < self.blocks.len() {
self.blocks = self.blocks.split_off(self.blocks.len() - len);
}
}
/// Returns the range of block numbers stored in the block cache. All blocks in this range can
/// be accessed.
fn available_block_numbers(&self) -> Option<RangeInclusive<u64>> {
Some(self.blocks.first()?.number..=self.blocks.last()?.number)
}
/// Returns a block with the corresponding number, if any.
pub fn block_by_number(&self, block_number: u64) -> Option<&Eth1Block> {
self.blocks.get(
self.blocks
.as_slice()
.binary_search_by(|block| block.number.cmp(&block_number))
.ok()?,
)
}
/// Insert an `Eth1Snapshot` into `self`, allowing future queries.
///
/// Allows inserting either:
///
/// - The root block (i.e., any block if there are no existing blocks), or,
/// - An immediate child of the most recent (highest block number) block.
///
/// ## Errors
///
/// - If the cache is not empty and `item.block.block_number - 1` is not already in `self`.
/// - If `item.block.block_number` is in `self`, but is not identical to the supplied
/// `Eth1Snapshot`.
/// - If `item.block.timestamp` is prior to the parent.
pub fn insert_root_or_child(&mut self, block: Eth1Block) -> Result<(), Error> {
let expected_block_number = self
.highest_block_number()
.map(|n| n + 1)
.unwrap_or_else(|| block.number);
// If there are already some cached blocks, check to see if the new block number is one of
// them.
//
// If the block is already known, check to see the given block is identical to it. If not,
// raise an inconsistency error. This is mostly likely caused by some fork on the eth1
// chain.
if let Some(local) = self.available_block_numbers() {
if local.contains(&block.number) {
let known_block = self.block_by_number(block.number).ok_or_else(|| {
Error::Internal("An expected block was not present".to_string())
})?;
if known_block == &block {
return Ok(());
} else {
return Err(Error::Conflicting(block.number));
};
}
}
// Only permit blocks when it's either:
//
// - The first block inserted.
// - Exactly one block number higher than the highest known block number.
if block.number != expected_block_number {
return Err(Error::NonConsecutive {
given: block.number,
expected: expected_block_number,
});
}
// If the block is not the first block inserted, ensure that its timestamp is not higher
// than its parents.
if let Some(previous_block) = self.blocks.last() {
if previous_block.timestamp > block.timestamp {
return Err(Error::InconsistentTimestamp {
parent: previous_block.timestamp,
child: block.timestamp,
});
}
}
self.blocks.push(block);
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
fn get_block(i: u64, interval_secs: u64) -> Eth1Block {
Eth1Block {
hash: Hash256::from_low_u64_be(i),
timestamp: i * interval_secs,
number: i,
deposit_root: Some(Hash256::from_low_u64_be(i << 32)),
deposit_count: Some(i),
}
}
fn get_blocks(n: usize, interval_secs: u64) -> Vec<Eth1Block> {
(0..n as u64)
.into_iter()
.map(|i| get_block(i, interval_secs))
.collect()
}
fn insert(cache: &mut BlockCache, s: Eth1Block) -> Result<(), Error> {
cache.insert_root_or_child(s)
}
#[test]
fn truncate() {
let n = 16;
let blocks = get_blocks(n, 10);
let mut cache = BlockCache::default();
for block in blocks {
insert(&mut cache, block.clone()).expect("should add consecutive blocks");
}
for len in vec![0, 1, 2, 3, 4, 8, 15, 16] {
let mut cache = cache.clone();
cache.truncate(len);
assert_eq!(
cache.blocks.len(),
len,
"should truncate to length: {}",
len
);
}
let mut cache_2 = cache.clone();
cache_2.truncate(17);
assert_eq!(
cache_2.blocks.len(),
n,
"truncate to larger than n should be a no-op"
);
}
#[test]
fn inserts() {
let n = 16;
let blocks = get_blocks(n, 10);
let mut cache = BlockCache::default();
for block in blocks {
insert(&mut cache, block.clone()).expect("should add consecutive blocks");
}
// No error for re-adding a block identical to one that exists.
assert!(insert(&mut cache, get_block(n as u64 - 1, 10)).is_ok());
// Error for re-adding a block that is different to the one that exists.
assert!(insert(&mut cache, get_block(n as u64 - 1, 11)).is_err());
// Error for adding non-consecutive blocks.
assert!(insert(&mut cache, get_block(n as u64 + 1, 10)).is_err());
assert!(insert(&mut cache, get_block(n as u64 + 2, 10)).is_err());
// Error for adding timestamp prior to previous.
assert!(insert(&mut cache, get_block(n as u64, 1)).is_err());
// Double check to make sure previous test was only affected by timestamp.
assert!(insert(&mut cache, get_block(n as u64, 10)).is_ok());
}
#[test]
fn duplicate_timestamp() {
let mut blocks = get_blocks(7, 10);
blocks[0].timestamp = 0;
blocks[1].timestamp = 10;
blocks[2].timestamp = 10;
blocks[3].timestamp = 20;
blocks[4].timestamp = 30;
blocks[5].timestamp = 40;
blocks[6].timestamp = 40;
let mut cache = BlockCache::default();
for block in &blocks {
insert(&mut cache, block.clone())
.expect("should add consecutive blocks with duplicate timestamps");
}
assert_eq!(cache.blocks, blocks, "should have added all blocks");
}
}

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use crate::DepositLog;
use eth2_hashing::hash;
use std::ops::Range;
use tree_hash::TreeHash;
use types::{Deposit, Hash256};
#[derive(Debug, PartialEq, Clone)]
pub enum Error {
/// A deposit log was added when a prior deposit was not already in the cache.
///
/// Logs have to be added with monotonically-increasing block numbers.
NonConsecutive { log_index: u64, expected: usize },
/// The eth1 event log data was unable to be parsed.
LogParseError(String),
/// There are insufficient deposits in the cache to fulfil the request.
InsufficientDeposits {
known_deposits: usize,
requested: u64,
},
/// A log with the given index is already present in the cache and it does not match the one
/// provided.
DuplicateDistinctLog(u64),
/// The deposit count must always be large enough to account for the requested deposit range.
///
/// E.g., you cannot request deposit 10 when the deposit count is 9.
DepositCountInvalid { deposit_count: u64, range_end: u64 },
/// An unexpected condition was encountered.
InternalError(String),
}
/// Emulates the eth1 deposit contract merkle tree.
pub struct DepositDataTree {
tree: merkle_proof::MerkleTree,
mix_in_length: usize,
depth: usize,
}
impl DepositDataTree {
/// Create a new Merkle tree from a list of leaves (`DepositData::tree_hash_root`) and a fixed depth.
pub fn create(leaves: &[Hash256], mix_in_length: usize, depth: usize) -> Self {
Self {
tree: merkle_proof::MerkleTree::create(leaves, depth),
mix_in_length,
depth,
}
}
/// Returns 32 bytes representing the "mix in length" for the merkle root of this tree.
fn length_bytes(&self) -> Vec<u8> {
int_to_bytes32(self.mix_in_length)
}
/// Retrieve the root hash of this Merkle tree with the length mixed in.
pub fn root(&self) -> Hash256 {
let mut preimage = [0; 64];
preimage[0..32].copy_from_slice(&self.tree.hash()[..]);
preimage[32..64].copy_from_slice(&self.length_bytes());
Hash256::from_slice(&hash(&preimage))
}
/// Return the leaf at `index` and a Merkle proof of its inclusion.
///
/// The Merkle proof is in "bottom-up" order, starting with a leaf node
/// and moving up the tree. Its length will be exactly equal to `depth + 1`.
pub fn generate_proof(&self, index: usize) -> (Hash256, Vec<Hash256>) {
let (root, mut proof) = self.tree.generate_proof(index, self.depth);
proof.push(Hash256::from_slice(&self.length_bytes()));
(root, proof)
}
}
/// Mirrors the merkle tree of deposits in the eth1 deposit contract.
///
/// Provides `Deposit` objects with merkle proofs included.
#[derive(Default)]
pub struct DepositCache {
logs: Vec<DepositLog>,
roots: Vec<Hash256>,
}
impl DepositCache {
/// Returns the number of deposits available in the cache.
pub fn len(&self) -> usize {
self.logs.len()
}
/// True if the cache does not store any blocks.
pub fn is_empty(&self) -> bool {
self.logs.is_empty()
}
/// Returns the block number for the most recent deposit in the cache.
pub fn latest_block_number(&self) -> Option<u64> {
self.logs.last().map(|log| log.block_number)
}
/// Returns an iterator over all the logs in `self`.
pub fn iter(&self) -> impl Iterator<Item = &DepositLog> {
self.logs.iter()
}
/// Returns the i'th deposit log.
pub fn get(&self, i: usize) -> Option<&DepositLog> {
self.logs.get(i)
}
/// Adds `log` to self.
///
/// This function enforces that `logs` are imported one-by-one with no gaps between
/// `log.index`, starting at `log.index == 0`.
///
/// ## Errors
///
/// - If a log with index `log.index - 1` is not already present in `self` (ignored when empty).
/// - If a log with `log.index` is already known, but the given `log` is distinct to it.
pub fn insert_log(&mut self, log: DepositLog) -> Result<(), Error> {
if log.index == self.logs.len() as u64 {
self.roots
.push(Hash256::from_slice(&log.deposit_data.tree_hash_root()));
self.logs.push(log);
Ok(())
} else if log.index < self.logs.len() as u64 {
if self.logs[log.index as usize] == log {
Ok(())
} else {
Err(Error::DuplicateDistinctLog(log.index))
}
} else {
Err(Error::NonConsecutive {
log_index: log.index,
expected: self.logs.len(),
})
}
}
/// Returns a list of `Deposit` objects, within the given deposit index `range`.
///
/// The `deposit_count` is used to generate the proofs for the `Deposits`. For example, if we
/// have 100 proofs, but the eth2 chain only acknowledges 50 of them, we must produce our
/// proofs with respect to a tree size of 50.
///
///
/// ## Errors
///
/// - If `deposit_count` is larger than `range.end`.
/// - There are not sufficient deposits in the tree to generate the proof.
pub fn get_deposits(
&self,
range: Range<u64>,
deposit_count: u64,
tree_depth: usize,
) -> Result<(Hash256, Vec<Deposit>), Error> {
if deposit_count < range.end {
// It's invalid to ask for more deposits than should exist.
Err(Error::DepositCountInvalid {
deposit_count,
range_end: range.end,
})
} else if range.end > self.logs.len() as u64 {
// The range of requested deposits exceeds the deposits stored locally.
Err(Error::InsufficientDeposits {
requested: range.end,
known_deposits: self.logs.len(),
})
} else if deposit_count > self.roots.len() as u64 {
// There are not `deposit_count` known deposit roots, so we can't build the merkle tree
// to prove into.
Err(Error::InsufficientDeposits {
requested: deposit_count,
known_deposits: self.logs.len(),
})
} else {
let roots = self
.roots
.get(0..deposit_count as usize)
.ok_or_else(|| Error::InternalError("Unable to get known root".into()))?;
// Note: there is likely a more optimal solution than recreating the `DepositDataTree`
// each time this function is called.
//
// Perhaps a base merkle tree could be maintained that contains all deposits up to the
// last finalized eth1 deposit count. Then, that tree could be cloned and extended for
// each of these calls.
let tree = DepositDataTree::create(roots, deposit_count as usize, tree_depth);
let deposits = self
.logs
.get(range.start as usize..range.end as usize)
.ok_or_else(|| Error::InternalError("Unable to get known log".into()))?
.iter()
.map(|deposit_log| {
let (_leaf, proof) = tree.generate_proof(deposit_log.index as usize);
Deposit {
proof: proof.into(),
data: deposit_log.deposit_data.clone(),
}
})
.collect();
Ok((tree.root(), deposits))
}
}
}
/// Returns `int` as little-endian bytes with a length of 32.
fn int_to_bytes32(int: usize) -> Vec<u8> {
let mut vec = int.to_le_bytes().to_vec();
vec.resize(32, 0);
vec
}
#[cfg(test)]
pub mod tests {
use super::*;
use crate::deposit_log::tests::EXAMPLE_LOG;
use crate::http::Log;
pub const TREE_DEPTH: usize = 32;
fn example_log() -> DepositLog {
let log = Log {
block_number: 42,
data: EXAMPLE_LOG.to_vec(),
};
DepositLog::from_log(&log).expect("should decode log")
}
#[test]
fn insert_log_valid() {
let mut tree = DepositCache::default();
for i in 0..16 {
let mut log = example_log();
log.index = i;
tree.insert_log(log).expect("should add consecutive logs")
}
}
#[test]
fn insert_log_invalid() {
let mut tree = DepositCache::default();
for i in 0..4 {
let mut log = example_log();
log.index = i;
tree.insert_log(log).expect("should add consecutive logs")
}
// Add duplicate, when given is the same as the one known.
let mut log = example_log();
log.index = 3;
assert!(tree.insert_log(log).is_ok());
// Add duplicate, when given is different to the one known.
let mut log = example_log();
log.index = 3;
log.block_number = 99;
assert!(tree.insert_log(log).is_err());
// Skip inserting a log.
let mut log = example_log();
log.index = 5;
assert!(tree.insert_log(log).is_err());
}
#[test]
fn get_deposit_valid() {
let n = 1_024;
let mut tree = DepositCache::default();
for i in 0..n {
let mut log = example_log();
log.index = i;
log.block_number = i;
log.deposit_data.withdrawal_credentials = Hash256::from_low_u64_be(i);
tree.insert_log(log).expect("should add consecutive logs")
}
// Get 0 deposits, with max deposit count.
let (_, deposits) = tree
.get_deposits(0..0, n, TREE_DEPTH)
.expect("should get the full tree");
assert_eq!(deposits.len(), 0, "should return no deposits");
// Get 0 deposits, with 0 deposit count.
let (_, deposits) = tree
.get_deposits(0..0, 0, TREE_DEPTH)
.expect("should get the full tree");
assert_eq!(deposits.len(), 0, "should return no deposits");
// Get 0 deposits, with 0 deposit count, tree depth 0.
let (_, deposits) = tree
.get_deposits(0..0, 0, 0)
.expect("should get the full tree");
assert_eq!(deposits.len(), 0, "should return no deposits");
// Get all deposits, with max deposit count.
let (full_root, deposits) = tree
.get_deposits(0..n, n, TREE_DEPTH)
.expect("should get the full tree");
assert_eq!(deposits.len(), n as usize, "should return all deposits");
// Get 4 deposits, with max deposit count.
let (root, deposits) = tree
.get_deposits(0..4, n, TREE_DEPTH)
.expect("should get the four from the full tree");
assert_eq!(
deposits.len(),
4 as usize,
"should get 4 deposits from full tree"
);
assert_eq!(
root, full_root,
"should still return full root when getting deposit subset"
);
// Get half of the deposits, with half deposit count.
let (half_root, deposits) = tree
.get_deposits(0..n / 2, n / 2, TREE_DEPTH)
.expect("should get the half tree");
assert_eq!(
deposits.len(),
n as usize / 2,
"should return half deposits"
);
// Get 4 deposits, with half deposit count.
let (root, deposits) = tree
.get_deposits(0..4, n / 2, TREE_DEPTH)
.expect("should get the half tree");
assert_eq!(
deposits.len(),
4 as usize,
"should get 4 deposits from half tree"
);
assert_eq!(
root, half_root,
"should still return half root when getting deposit subset"
);
assert_ne!(
full_root, half_root,
"should get different root when pinning deposit count"
);
}
#[test]
fn get_deposit_invalid() {
let n = 16;
let mut tree = DepositCache::default();
for i in 0..n {
let mut log = example_log();
log.index = i;
log.block_number = i;
log.deposit_data.withdrawal_credentials = Hash256::from_low_u64_be(i);
tree.insert_log(log).expect("should add consecutive logs")
}
// Range too high.
assert!(tree.get_deposits(0..n + 1, n, TREE_DEPTH).is_err());
// Count too high.
assert!(tree.get_deposits(0..n, n + 1, TREE_DEPTH).is_err());
// Range higher than count.
assert!(tree.get_deposits(0..4, 2, TREE_DEPTH).is_err());
}
}

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use super::http::Log;
use ssz::Decode;
use types::{DepositData, Hash256, PublicKeyBytes, SignatureBytes};
/// The following constants define the layout of bytes in the deposit contract `DepositEvent`. The
/// event bytes are formatted according to the Ethereum ABI.
const PUBKEY_START: usize = 192;
const PUBKEY_LEN: usize = 48;
const CREDS_START: usize = PUBKEY_START + 64 + 32;
const CREDS_LEN: usize = 32;
const AMOUNT_START: usize = CREDS_START + 32 + 32;
const AMOUNT_LEN: usize = 8;
const SIG_START: usize = AMOUNT_START + 32 + 32;
const SIG_LEN: usize = 96;
const INDEX_START: usize = SIG_START + 96 + 32;
const INDEX_LEN: usize = 8;
/// A fully parsed eth1 deposit contract log.
#[derive(Debug, PartialEq, Clone)]
pub struct DepositLog {
pub deposit_data: DepositData,
/// The block number of the log that included this `DepositData`.
pub block_number: u64,
/// The index included with the deposit log.
pub index: u64,
}
impl DepositLog {
/// Attempts to parse a raw `Log` from the deposit contract into a `DepositLog`.
pub fn from_log(log: &Log) -> Result<Self, String> {
let bytes = &log.data;
let pubkey = bytes
.get(PUBKEY_START..PUBKEY_START + PUBKEY_LEN)
.ok_or_else(|| "Insufficient bytes for pubkey".to_string())?;
let withdrawal_credentials = bytes
.get(CREDS_START..CREDS_START + CREDS_LEN)
.ok_or_else(|| "Insufficient bytes for withdrawal credential".to_string())?;
let amount = bytes
.get(AMOUNT_START..AMOUNT_START + AMOUNT_LEN)
.ok_or_else(|| "Insufficient bytes for amount".to_string())?;
let signature = bytes
.get(SIG_START..SIG_START + SIG_LEN)
.ok_or_else(|| "Insufficient bytes for signature".to_string())?;
let index = bytes
.get(INDEX_START..INDEX_START + INDEX_LEN)
.ok_or_else(|| "Insufficient bytes for index".to_string())?;
let deposit_data = DepositData {
pubkey: PublicKeyBytes::from_ssz_bytes(pubkey)
.map_err(|e| format!("Invalid pubkey ssz: {:?}", e))?,
withdrawal_credentials: Hash256::from_ssz_bytes(withdrawal_credentials)
.map_err(|e| format!("Invalid withdrawal_credentials ssz: {:?}", e))?,
amount: u64::from_ssz_bytes(amount)
.map_err(|e| format!("Invalid amount ssz: {:?}", e))?,
signature: SignatureBytes::from_ssz_bytes(signature)
.map_err(|e| format!("Invalid signature ssz: {:?}", e))?,
};
Ok(DepositLog {
deposit_data,
block_number: log.block_number,
index: u64::from_ssz_bytes(index).map_err(|e| format!("Invalid index ssz: {:?}", e))?,
})
}
}
#[cfg(test)]
pub mod tests {
use super::*;
use crate::http::Log;
/// The data from a deposit event, using the v0.8.3 version of the deposit contract.
pub const EXAMPLE_LOG: &[u8] = &[
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 160, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 48, 167, 108, 6, 69, 88, 17, 3, 51, 6, 4, 158, 232, 82,
248, 218, 2, 71, 219, 55, 102, 86, 125, 136, 203, 36, 77, 64, 213, 43, 52, 175, 154, 239,
50, 142, 52, 201, 77, 54, 239, 0, 229, 22, 46, 139, 120, 62, 240, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 64, 89, 115, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96, 140, 74, 175, 158, 209, 20, 206,
30, 63, 215, 238, 113, 60, 132, 216, 211, 100, 186, 202, 71, 34, 200, 160, 225, 212, 213,
119, 88, 51, 80, 101, 74, 2, 45, 78, 153, 12, 192, 44, 51, 77, 40, 10, 72, 246, 34, 193,
187, 22, 95, 4, 211, 245, 224, 13, 162, 21, 163, 54, 225, 22, 124, 3, 56, 14, 81, 122, 189,
149, 250, 251, 159, 22, 77, 94, 157, 197, 196, 253, 110, 201, 88, 193, 246, 136, 226, 221,
18, 113, 232, 105, 100, 114, 103, 237, 189, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
];
#[test]
fn can_parse_example_log() {
let log = Log {
block_number: 42,
data: EXAMPLE_LOG.to_vec(),
};
DepositLog::from_log(&log).expect("should decode log");
}
}

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//! Provides a very minimal set of functions for interfacing with the eth2 deposit contract via an
//! eth1 HTTP JSON-RPC endpoint.
//!
//! All remote functions return a future (i.e., are async).
//!
//! Does not use a web3 library, instead it uses `reqwest` (`hyper`) to call the remote endpoint
//! and `serde` to decode the response.
//!
//! ## Note
//!
//! There is no ABI parsing here, all function signatures and topics are hard-coded as constants.
use futures::{Future, Stream};
use libflate::gzip::Decoder;
use reqwest::{header::CONTENT_TYPE, r#async::ClientBuilder, StatusCode};
use serde_json::{json, Value};
use std::io::prelude::*;
use std::ops::Range;
use std::time::Duration;
use types::Hash256;
/// `keccak("DepositEvent(bytes,bytes,bytes,bytes,bytes)")`
pub const DEPOSIT_EVENT_TOPIC: &str =
"0x649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5";
/// `keccak("get_deposit_root()")[0..4]`
pub const DEPOSIT_ROOT_FN_SIGNATURE: &str = "0x863a311b";
/// `keccak("get_deposit_count()")[0..4]`
pub const DEPOSIT_COUNT_FN_SIGNATURE: &str = "0x621fd130";
/// Number of bytes in deposit contract deposit root response.
pub const DEPOSIT_COUNT_RESPONSE_BYTES: usize = 96;
/// Number of bytes in deposit contract deposit root (value only).
pub const DEPOSIT_ROOT_BYTES: usize = 32;
#[derive(Debug, PartialEq, Clone)]
pub struct Block {
pub hash: Hash256,
pub timestamp: u64,
pub number: u64,
}
/// Returns the current block number.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
pub fn get_block_number(
endpoint: &str,
timeout: Duration,
) -> impl Future<Item = u64, Error = String> {
send_rpc_request(endpoint, "eth_blockNumber", json!([]), timeout)
.and_then(|response_body| {
hex_to_u64_be(
response_result(&response_body)?
.ok_or_else(|| "No result field was returned for block number".to_string())?
.as_str()
.ok_or_else(|| "Data was not string")?,
)
})
.map_err(|e| format!("Failed to get block number: {}", e))
}
/// Gets a block hash by block number.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
pub fn get_block(
endpoint: &str,
block_number: u64,
timeout: Duration,
) -> impl Future<Item = Block, Error = String> {
let params = json!([
format!("0x{:x}", block_number),
false // do not return full tx objects.
]);
send_rpc_request(endpoint, "eth_getBlockByNumber", params, timeout)
.and_then(|response_body| {
let hash = hex_to_bytes(
response_result(&response_body)?
.ok_or_else(|| "No result field was returned for block".to_string())?
.get("hash")
.ok_or_else(|| "No hash for block")?
.as_str()
.ok_or_else(|| "Block hash was not string")?,
)?;
let hash = if hash.len() == 32 {
Ok(Hash256::from_slice(&hash))
} else {
Err(format!("Block has was not 32 bytes: {:?}", hash))
}?;
let timestamp = hex_to_u64_be(
response_result(&response_body)?
.ok_or_else(|| "No result field was returned for timestamp".to_string())?
.get("timestamp")
.ok_or_else(|| "No timestamp for block")?
.as_str()
.ok_or_else(|| "Block timestamp was not string")?,
)?;
let number = hex_to_u64_be(
response_result(&response_body)?
.ok_or_else(|| "No result field was returned for number".to_string())?
.get("number")
.ok_or_else(|| "No number for block")?
.as_str()
.ok_or_else(|| "Block number was not string")?,
)?;
if number <= usize::max_value() as u64 {
Ok(Block {
hash,
timestamp,
number,
})
} else {
Err(format!("Block number {} is larger than a usize", number))
}
})
.map_err(|e| format!("Failed to get block number: {}", e))
}
/// Returns the value of the `get_deposit_count()` call at the given `address` for the given
/// `block_number`.
///
/// Assumes that the `address` has the same ABI as the eth2 deposit contract.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
pub fn get_deposit_count(
endpoint: &str,
address: &str,
block_number: u64,
timeout: Duration,
) -> impl Future<Item = Option<u64>, Error = String> {
call(
endpoint,
address,
DEPOSIT_COUNT_FN_SIGNATURE,
block_number,
timeout,
)
.and_then(|result| result.ok_or_else(|| "No response to deposit count".to_string()))
.and_then(|bytes| {
if bytes.is_empty() {
Ok(None)
} else if bytes.len() == DEPOSIT_COUNT_RESPONSE_BYTES {
let mut array = [0; 8];
array.copy_from_slice(&bytes[32 + 32..32 + 32 + 8]);
Ok(Some(u64::from_le_bytes(array)))
} else {
Err(format!(
"Deposit count response was not {} bytes: {:?}",
DEPOSIT_COUNT_RESPONSE_BYTES, bytes
))
}
})
}
/// Returns the value of the `get_hash_tree_root()` call at the given `block_number`.
///
/// Assumes that the `address` has the same ABI as the eth2 deposit contract.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
pub fn get_deposit_root(
endpoint: &str,
address: &str,
block_number: u64,
timeout: Duration,
) -> impl Future<Item = Option<Hash256>, Error = String> {
call(
endpoint,
address,
DEPOSIT_ROOT_FN_SIGNATURE,
block_number,
timeout,
)
.and_then(|result| result.ok_or_else(|| "No response to deposit root".to_string()))
.and_then(|bytes| {
if bytes.is_empty() {
Ok(None)
} else if bytes.len() == DEPOSIT_ROOT_BYTES {
Ok(Some(Hash256::from_slice(&bytes)))
} else {
Err(format!(
"Deposit root response was not {} bytes: {:?}",
DEPOSIT_ROOT_BYTES, bytes
))
}
})
}
/// Performs a instant, no-transaction call to the contract `address` with the given `0x`-prefixed
/// `hex_data`.
///
/// Returns bytes, if any.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
fn call(
endpoint: &str,
address: &str,
hex_data: &str,
block_number: u64,
timeout: Duration,
) -> impl Future<Item = Option<Vec<u8>>, Error = String> {
let params = json! ([
{
"to": address,
"data": hex_data,
},
format!("0x{:x}", block_number)
]);
send_rpc_request(endpoint, "eth_call", params, timeout).and_then(|response_body| {
match response_result(&response_body)? {
None => Ok(None),
Some(result) => {
let hex = result
.as_str()
.map(|s| s.to_string())
.ok_or_else(|| "'result' value was not a string".to_string())?;
Ok(Some(hex_to_bytes(&hex)?))
}
}
})
}
/// A reduced set of fields from an Eth1 contract log.
#[derive(Debug, PartialEq, Clone)]
pub struct Log {
pub(crate) block_number: u64,
pub(crate) data: Vec<u8>,
}
/// Returns logs for the `DEPOSIT_EVENT_TOPIC`, for the given `address` in the given
/// `block_height_range`.
///
/// It's not clear from the Ethereum JSON-RPC docs if this range is inclusive or not.
///
/// Uses HTTP JSON RPC at `endpoint`. E.g., `http://localhost:8545`.
pub fn get_deposit_logs_in_range(
endpoint: &str,
address: &str,
block_height_range: Range<u64>,
timeout: Duration,
) -> impl Future<Item = Vec<Log>, Error = String> {
let params = json! ([{
"address": address,
"topics": [DEPOSIT_EVENT_TOPIC],
"fromBlock": format!("0x{:x}", block_height_range.start),
"toBlock": format!("0x{:x}", block_height_range.end),
}]);
send_rpc_request(endpoint, "eth_getLogs", params, timeout)
.and_then(|response_body| {
response_result(&response_body)?
.ok_or_else(|| "No result field was returned for deposit logs".to_string())?
.as_array()
.cloned()
.ok_or_else(|| "'result' value was not an array".to_string())?
.into_iter()
.map(|value| {
let block_number = value
.get("blockNumber")
.ok_or_else(|| "No block number field in log")?
.as_str()
.ok_or_else(|| "Block number was not string")?;
let data = value
.get("data")
.ok_or_else(|| "No block number field in log")?
.as_str()
.ok_or_else(|| "Data was not string")?;
Ok(Log {
block_number: hex_to_u64_be(&block_number)?,
data: hex_to_bytes(data)?,
})
})
.collect::<Result<Vec<Log>, String>>()
})
.map_err(|e| format!("Failed to get logs in range: {}", e))
}
/// Sends an RPC request to `endpoint`, using a POST with the given `body`.
///
/// Tries to receive the response and parse the body as a `String`.
pub fn send_rpc_request(
endpoint: &str,
method: &str,
params: Value,
timeout: Duration,
) -> impl Future<Item = String, Error = String> {
let body = json! ({
"jsonrpc": "2.0",
"method": method,
"params": params,
"id": 1
})
.to_string();
// Note: it is not ideal to create a new client for each request.
//
// A better solution would be to create some struct that contains a built client and pass it
// around (similar to the `web3` crate's `Transport` structs).
ClientBuilder::new()
.timeout(timeout)
.build()
.expect("The builder should always build a client")
.post(endpoint)
.header(CONTENT_TYPE, "application/json")
.body(body)
.send()
.map_err(|e| format!("Request failed: {:?}", e))
.and_then(|response| {
if response.status() != StatusCode::OK {
Err(format!(
"Response HTTP status was not 200 OK: {}.",
response.status()
))
} else {
Ok(response)
}
})
.and_then(|response| {
response
.headers()
.get(CONTENT_TYPE)
.ok_or_else(|| "No content-type header in response".to_string())
.and_then(|encoding| {
encoding
.to_str()
.map(|s| s.to_string())
.map_err(|e| format!("Failed to parse content-type header: {}", e))
})
.map(|encoding| (response, encoding))
})
.and_then(|(response, encoding)| {
response
.into_body()
.concat2()
.map(|chunk| chunk.iter().cloned().collect::<Vec<u8>>())
.map_err(|e| format!("Failed to receive body: {:?}", e))
.and_then(move |bytes| match encoding.as_str() {
"application/json" => Ok(bytes),
"application/json; charset=utf-8" => Ok(bytes),
// Note: gzip is not presently working because we always seem to get an empty
// response from the server.
//
// I expect this is some simple-to-solve issue for someone who is familiar with
// the eth1 JSON RPC.
//
// Some public-facing web3 servers use gzip to compress their traffic, it would
// be good to support this.
"application/x-gzip" => {
let mut decoder = Decoder::new(&bytes[..])
.map_err(|e| format!("Failed to create gzip decoder: {}", e))?;
let mut decompressed = vec![];
decoder
.read_to_end(&mut decompressed)
.map_err(|e| format!("Failed to decompress gzip data: {}", e))?;
Ok(decompressed)
}
other => Err(format!("Unsupported encoding: {}", other)),
})
.map(|bytes| String::from_utf8_lossy(&bytes).into_owned())
.map_err(|e| format!("Failed to receive body: {:?}", e))
})
}
/// Accepts an entire HTTP body (as a string) and returns the `result` field, as a serde `Value`.
fn response_result(response: &str) -> Result<Option<Value>, String> {
Ok(serde_json::from_str::<Value>(&response)
.map_err(|e| format!("Failed to parse response: {:?}", e))?
.get("result")
.cloned()
.map(Some)
.unwrap_or_else(|| None))
}
/// Parses a `0x`-prefixed, **big-endian** hex string as a u64.
///
/// Note: the JSON-RPC encodes integers as big-endian. The deposit contract uses little-endian.
/// Therefore, this function is only useful for numbers encoded by the JSON RPC.
///
/// E.g., `0x01 == 1`
fn hex_to_u64_be(hex: &str) -> Result<u64, String> {
u64::from_str_radix(strip_prefix(hex)?, 16)
.map_err(|e| format!("Failed to parse hex as u64: {:?}", e))
}
/// Parses a `0x`-prefixed, big-endian hex string as bytes.
///
/// E.g., `0x0102 == vec![1, 2]`
fn hex_to_bytes(hex: &str) -> Result<Vec<u8>, String> {
hex::decode(strip_prefix(hex)?).map_err(|e| format!("Failed to parse hex as bytes: {:?}", e))
}
/// Removes the `0x` prefix from some bytes. Returns an error if the prefix is not present.
fn strip_prefix(hex: &str) -> Result<&str, String> {
if hex.starts_with("0x") {
Ok(&hex[2..])
} else {
Err("Hex string did not start with `0x`".to_string())
}
}

27
beacon_node/eth1/src/inner.rs Normal file
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@ -0,0 +1,27 @@
use crate::Config;
use crate::{block_cache::BlockCache, deposit_cache::DepositCache};
use parking_lot::RwLock;
#[derive(Default)]
pub struct DepositUpdater {
pub cache: DepositCache,
pub last_processed_block: Option<u64>,
}
#[derive(Default)]
pub struct Inner {
pub block_cache: RwLock<BlockCache>,
pub deposit_cache: RwLock<DepositUpdater>,
pub config: RwLock<Config>,
}
impl Inner {
/// Prunes the block cache to `self.target_block_cache_len`.
///
/// Is a no-op if `self.target_block_cache_len` is `None`.
pub fn prune_blocks(&self) {
if let Some(block_cache_truncation) = self.config.read().block_cache_truncation {
self.block_cache.write().truncate(block_cache_truncation);
}
}
}

11
beacon_node/eth1/src/lib.rs Normal file
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@ -0,0 +1,11 @@
mod block_cache;
mod deposit_cache;
mod deposit_log;
pub mod http;
mod inner;
mod service;
pub use block_cache::{BlockCache, Eth1Block};
pub use deposit_cache::DepositCache;
pub use deposit_log::DepositLog;
pub use service::{BlockCacheUpdateOutcome, Config, DepositCacheUpdateOutcome, Error, Service};

643
beacon_node/eth1/src/service.rs Normal file
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@ -0,0 +1,643 @@
use crate::{
block_cache::{BlockCache, Error as BlockCacheError, Eth1Block},
deposit_cache::Error as DepositCacheError,
http::{
get_block, get_block_number, get_deposit_count, get_deposit_logs_in_range, get_deposit_root,
},
inner::{DepositUpdater, Inner},
DepositLog,
};
use exit_future::Exit;
use futures::{
future::{loop_fn, Loop},
stream, Future, Stream,
};
use parking_lot::{RwLock, RwLockReadGuard};
use serde::{Deserialize, Serialize};
use slog::{debug, error, trace, Logger};
use std::ops::{Range, RangeInclusive};
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::timer::Delay;
const STANDARD_TIMEOUT_MILLIS: u64 = 15_000;
/// Timeout when doing a eth_blockNumber call.
const BLOCK_NUMBER_TIMEOUT_MILLIS: u64 = STANDARD_TIMEOUT_MILLIS;
/// Timeout when doing an eth_getBlockByNumber call.
const GET_BLOCK_TIMEOUT_MILLIS: u64 = STANDARD_TIMEOUT_MILLIS;
/// Timeout when doing an eth_call to read the deposit contract root.
const GET_DEPOSIT_ROOT_TIMEOUT_MILLIS: u64 = STANDARD_TIMEOUT_MILLIS;
/// Timeout when doing an eth_call to read the deposit contract deposit count.
const GET_DEPOSIT_COUNT_TIMEOUT_MILLIS: u64 = STANDARD_TIMEOUT_MILLIS;
/// Timeout when doing an eth_getLogs to read the deposit contract logs.
const GET_DEPOSIT_LOG_TIMEOUT_MILLIS: u64 = STANDARD_TIMEOUT_MILLIS;
#[derive(Debug, PartialEq, Clone)]
pub enum Error {
/// The remote node is less synced that we expect, it is not useful until has done more
/// syncing.
RemoteNotSynced {
next_required_block: u64,
remote_highest_block: u64,
follow_distance: u64,
},
/// Failed to download a block from the eth1 node.
BlockDownloadFailed(String),
/// Failed to get the current block number from the eth1 node.
GetBlockNumberFailed(String),
/// Failed to read the deposit contract root from the eth1 node.
GetDepositRootFailed(String),
/// Failed to read the deposit contract deposit count from the eth1 node.
GetDepositCountFailed(String),
/// Failed to read the deposit contract root from the eth1 node.
GetDepositLogsFailed(String),
/// There was an inconsistency when adding a block to the cache.
FailedToInsertEth1Block(BlockCacheError),
/// There was an inconsistency when adding a deposit to the cache.
FailedToInsertDeposit(DepositCacheError),
/// A log downloaded from the eth1 contract was not well formed.
FailedToParseDepositLog {
block_range: Range<u64>,
error: String,
},
/// There was an unexpected internal error.
Internal(String),
}
/// The success message for an Eth1Data cache update.
#[derive(Debug, PartialEq, Clone)]
pub enum BlockCacheUpdateOutcome {
/// The cache was sucessfully updated.
Success {
blocks_imported: usize,
head_block_number: Option<u64>,
},
}
/// The success message for an Eth1 deposit cache update.
#[derive(Debug, PartialEq, Clone)]
pub enum DepositCacheUpdateOutcome {
/// The cache was sucessfully updated.
Success { logs_imported: usize },
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Config {
/// An Eth1 node (e.g., Geth) running a HTTP JSON-RPC endpoint.
pub endpoint: String,
/// The address the `BlockCache` and `DepositCache` should assume is the canonical deposit contract.
pub deposit_contract_address: String,
/// Defines the first block that the `DepositCache` will start searching for deposit logs.
///
/// Setting too high can result in missed logs. Setting too low will result in unnecessary
/// calls to the Eth1 node's HTTP JSON RPC.
pub deposit_contract_deploy_block: u64,
/// Defines the lowest block number that should be downloaded and added to the `BlockCache`.
pub lowest_cached_block_number: u64,
/// Defines how far behind the Eth1 node's head we should follow.
///
/// Note: this should be less than or equal to the specification's `ETH1_FOLLOW_DISTANCE`.
pub follow_distance: u64,
/// Defines the number of blocks that should be retained each time the `BlockCache` calls truncate on
/// itself.
pub block_cache_truncation: Option<usize>,
/// The interval between updates when using the `auto_update` function.
pub auto_update_interval_millis: u64,
/// The span of blocks we should query for logs, per request.
pub blocks_per_log_query: usize,
/// The maximum number of log requests per update.
pub max_log_requests_per_update: Option<usize>,
/// The maximum number of log requests per update.
pub max_blocks_per_update: Option<usize>,
}
impl Default for Config {
fn default() -> Self {
Self {
endpoint: "http://localhost:8545".into(),
deposit_contract_address: "0x0000000000000000000000000000000000000000".into(),
deposit_contract_deploy_block: 0,
lowest_cached_block_number: 0,
follow_distance: 128,
block_cache_truncation: Some(4_096),
auto_update_interval_millis: 500,
blocks_per_log_query: 1_000,
max_log_requests_per_update: None,
max_blocks_per_update: None,
}
}
}
/// Provides a set of Eth1 caches and async functions to update them.
///
/// Stores the following caches:
///
/// - Deposit cache: stores all deposit logs from the deposit contract.
/// - Block cache: stores some number of eth1 blocks.
#[derive(Clone)]
pub struct Service {
inner: Arc<Inner>,
pub log: Logger,
}
impl Service {
/// Creates a new service. Does not attempt to connect to the eth1 node.
pub fn new(config: Config, log: Logger) -> Self {
Self {
inner: Arc::new(Inner {
config: RwLock::new(config),
..Inner::default()
}),
log,
}
}
/// Provides access to the block cache.
pub fn blocks(&self) -> &RwLock<BlockCache> {
&self.inner.block_cache
}
/// Provides access to the deposit cache.
pub fn deposits(&self) -> &RwLock<DepositUpdater> {
&self.inner.deposit_cache
}
/// Returns the number of currently cached blocks.
pub fn block_cache_len(&self) -> usize {
self.blocks().read().len()
}
/// Returns the number deposits available in the deposit cache.
pub fn deposit_cache_len(&self) -> usize {
self.deposits().read().cache.len()
}
/// Read the service's configuration.
pub fn config(&self) -> RwLockReadGuard<Config> {
self.inner.config.read()
}
/// Updates the configuration in `self to be `new_config`.
///
/// Will truncate the block cache if the new configure specifies truncation.
pub fn update_config(&self, new_config: Config) -> Result<(), String> {
let mut old_config = self.inner.config.write();
if new_config.deposit_contract_deploy_block != old_config.deposit_contract_deploy_block {
// This may be possible, I just haven't looked into the details to ensure it's safe.
Err("Updating deposit_contract_deploy_block is not supported".to_string())
} else {
*old_config = new_config;
// Prevents a locking condition when calling prune_blocks.
drop(old_config);
self.inner.prune_blocks();
Ok(())
}
}
/// Set the lowest block that the block cache will store.
///
/// Note: this block may not always be present if truncating is enabled.
pub fn set_lowest_cached_block(&self, block_number: u64) {
self.inner.config.write().lowest_cached_block_number = block_number;
}
/// Update the deposit and block cache, returning an error if either fail.
///
/// ## Returns
///
/// - Ok(_) if the update was successful (the cache may or may not have been modified).
/// - Err(_) if there is an error.
///
/// Emits logs for debugging and errors.
pub fn update(
&self,
) -> impl Future<Item = (DepositCacheUpdateOutcome, BlockCacheUpdateOutcome), Error = String>
{
let log_a = self.log.clone();
let log_b = self.log.clone();
let deposit_future = self
.update_deposit_cache()
.map_err(|e| format!("Failed to update eth1 cache: {:?}", e))
.then(move |result| {
match &result {
Ok(DepositCacheUpdateOutcome::Success { logs_imported }) => trace!(
log_a,
"Updated eth1 deposit cache";
"logs_imported" => logs_imported,
),
Err(e) => error!(
log_a,
"Failed to update eth1 deposit cache";
"error" => e
),
};
result
});
let block_future = self
.update_block_cache()
.map_err(|e| format!("Failed to update eth1 cache: {:?}", e))
.then(move |result| {
match &result {
Ok(BlockCacheUpdateOutcome::Success {
blocks_imported,
head_block_number,
}) => trace!(
log_b,
"Updated eth1 block cache";
"blocks_imported" => blocks_imported,
"head_block" => head_block_number,
),
Err(e) => error!(
log_b,
"Failed to update eth1 block cache";
"error" => e
),
};
result
});
deposit_future.join(block_future)
}
/// A looping future that updates the cache, then waits `config.auto_update_interval` before
/// updating it again.
///
/// ## Returns
///
/// - Ok(_) if the update was successful (the cache may or may not have been modified).
/// - Err(_) if there is an error.
///
/// Emits logs for debugging and errors.
pub fn auto_update(&self, exit: Exit) -> impl Future<Item = (), Error = ()> {
let service = self.clone();
let log = self.log.clone();
let update_interval = Duration::from_millis(self.config().auto_update_interval_millis);
loop_fn((), move |()| {
let exit = exit.clone();
let service = service.clone();
let log_a = log.clone();
let log_b = log.clone();
service
.update()
.then(move |update_result| {
match update_result {
Err(e) => error!(
log_a,
"Failed to update eth1 genesis cache";
"retry_millis" => update_interval.as_millis(),
"error" => e,
),
Ok((deposit, block)) => debug!(
log_a,
"Updated eth1 genesis cache";
"retry_millis" => update_interval.as_millis(),
"blocks" => format!("{:?}", block),
"deposits" => format!("{:?}", deposit),
),
};
// Do not break the loop if there is an update failure.
Ok(())
})
.and_then(move |_| Delay::new(Instant::now() + update_interval))
.then(move |timer_result| {
if let Err(e) = timer_result {
error!(
log_b,
"Failed to trigger eth1 cache update delay";
"error" => format!("{:?}", e),
);
}
// Do not break the loop if there is an timer failure.
Ok(())
})
.map(move |_| {
if exit.is_live() {
Loop::Continue(())
} else {
Loop::Break(())
}
})
})
}
/// Contacts the remote eth1 node and attempts to import deposit logs up to the configured
/// follow-distance block.
///
/// Will process no more than `BLOCKS_PER_LOG_QUERY * MAX_LOG_REQUESTS_PER_UPDATE` blocks in a
/// single update.
///
/// ## Resolves with
///
/// - Ok(_) if the update was successful (the cache may or may not have been modified).
/// - Err(_) if there is an error.
///
/// Emits logs for debugging and errors.
pub fn update_deposit_cache(
&self,
) -> impl Future<Item = DepositCacheUpdateOutcome, Error = Error> {
let service_1 = self.clone();
let service_2 = self.clone();
let blocks_per_log_query = self.config().blocks_per_log_query;
let max_log_requests_per_update = self
.config()
.max_log_requests_per_update
.unwrap_or_else(usize::max_value);
let next_required_block = self
.deposits()
.read()
.last_processed_block
.map(|n| n + 1)
.unwrap_or_else(|| self.config().deposit_contract_deploy_block);
get_new_block_numbers(
&self.config().endpoint,
next_required_block,
self.config().follow_distance,
)
.map(move |range| {
range
.map(|range| {
range
.collect::<Vec<u64>>()
.chunks(blocks_per_log_query)
.take(max_log_requests_per_update)
.map(|vec| {
let first = vec.first().cloned().unwrap_or_else(|| 0);
let last = vec.last().map(|n| n + 1).unwrap_or_else(|| 0);
(first..last)
})
.collect::<Vec<Range<u64>>>()
})
.unwrap_or_else(|| vec![])
})
.and_then(move |block_number_chunks| {
stream::unfold(
block_number_chunks.into_iter(),
move |mut chunks| match chunks.next() {
Some(chunk) => {
let chunk_1 = chunk.clone();
Some(
get_deposit_logs_in_range(
&service_1.config().endpoint,
&service_1.config().deposit_contract_address,
chunk,
Duration::from_millis(GET_DEPOSIT_LOG_TIMEOUT_MILLIS),
)
.map_err(Error::GetDepositLogsFailed)
.map(|logs| (chunk_1, logs))
.map(|logs| (logs, chunks)),
)
}
None => None,
},
)
.fold(0, move |mut sum, (block_range, log_chunk)| {
let mut cache = service_2.deposits().write();
log_chunk
.into_iter()
.map(|raw_log| {
DepositLog::from_log(&raw_log).map_err(|error| {
Error::FailedToParseDepositLog {
block_range: block_range.clone(),
error,
}
})
})
// Return early if any of the logs cannot be parsed.
//
// This costs an additional `collect`, however it enforces that no logs are
// imported if any one of them cannot be parsed.
.collect::<Result<Vec<_>, _>>()?
.into_iter()
.map(|deposit_log| {
cache
.cache
.insert_log(deposit_log)
.map_err(Error::FailedToInsertDeposit)?;
sum += 1;
Ok(())
})
// Returns if a deposit is unable to be added to the cache.
//
// If this error occurs, the cache will no longer be guaranteed to hold either
// none or all of the logs for each block (i.e., they may exist _some_ logs for
// a block, but not _all_ logs for that block). This scenario can cause the
// node to choose an invalid genesis state or propose an invalid block.
.collect::<Result<_, _>>()?;
cache.last_processed_block = Some(block_range.end.saturating_sub(1));
Ok(sum)
})
.map(|logs_imported| DepositCacheUpdateOutcome::Success { logs_imported })
})
}
/// Contacts the remote eth1 node and attempts to import all blocks up to the configured
/// follow-distance block.
///
/// If configured, prunes the block cache after importing new blocks.
///
/// ## Resolves with
///
/// - Ok(_) if the update was successful (the cache may or may not have been modified).
/// - Err(_) if there is an error.
///
/// Emits logs for debugging and errors.
pub fn update_block_cache(&self) -> impl Future<Item = BlockCacheUpdateOutcome, Error = Error> {
let cache_1 = self.inner.clone();
let cache_2 = self.inner.clone();
let cache_3 = self.inner.clone();
let cache_4 = self.inner.clone();
let cache_5 = self.inner.clone();
let block_cache_truncation = self.config().block_cache_truncation;
let max_blocks_per_update = self
.config()
.max_blocks_per_update
.unwrap_or_else(usize::max_value);
let next_required_block = cache_1
.block_cache
.read()
.highest_block_number()
.map(|n| n + 1)
.unwrap_or_else(|| self.config().lowest_cached_block_number);
get_new_block_numbers(
&self.config().endpoint,
next_required_block,
self.config().follow_distance,
)
// Map the range of required blocks into a Vec.
//
// If the required range is larger than the size of the cache, drop the exiting cache
// because it's exipred and just download enough blocks to fill the cache.
.and_then(move |range| {
range
.map(|range| {
if range.start() > range.end() {
// Note: this check is not strictly necessary, however it remains to safe
// guard against any regression which may cause an underflow in a following
// subtraction operation.
Err(Error::Internal("Range was not increasing".into()))
} else {
let range_size = range.end() - range.start();
let max_size = block_cache_truncation
.map(|n| n as u64)
.unwrap_or_else(u64::max_value);
if range_size > max_size {
// If the range of required blocks is larger than `max_size`, drop all
// existing blocks and download `max_size` count of blocks.
let first_block = range.end() - max_size;
(*cache_5.block_cache.write()) = BlockCache::default();
Ok((first_block..=*range.end()).collect::<Vec<u64>>())
} else {
Ok(range.collect::<Vec<u64>>())
}
}
})
.unwrap_or_else(|| Ok(vec![]))
})
// Download the range of blocks and sequentially import them into the cache.
.and_then(move |required_block_numbers| {
let required_block_numbers = required_block_numbers
.into_iter()
.take(max_blocks_per_update);
// Produce a stream from the list of required block numbers and return a future that
// consumes the it.
stream::unfold(
required_block_numbers,
move |mut block_numbers| match block_numbers.next() {
Some(block_number) => Some(
download_eth1_block(cache_2.clone(), block_number)
.map(|v| (v, block_numbers)),
),
None => None,
},
)
.fold(0, move |sum, eth1_block| {
cache_3
.block_cache
.write()
.insert_root_or_child(eth1_block)
.map_err(Error::FailedToInsertEth1Block)?;
Ok(sum + 1)
})
})
.and_then(move |blocks_imported| {
// Prune the block cache, preventing it from growing too large.
cache_4.prune_blocks();
Ok(BlockCacheUpdateOutcome::Success {
blocks_imported,
head_block_number: cache_4.clone().block_cache.read().highest_block_number(),
})
})
}
}
/// Determine the range of blocks that need to be downloaded, given the remotes best block and
/// the locally stored best block.
fn get_new_block_numbers<'a>(
endpoint: &str,
next_required_block: u64,
follow_distance: u64,
) -> impl Future<Item = Option<RangeInclusive<u64>>, Error = Error> + 'a {
get_block_number(endpoint, Duration::from_millis(BLOCK_NUMBER_TIMEOUT_MILLIS))
.map_err(Error::GetBlockNumberFailed)
.and_then(move |remote_highest_block| {
let remote_follow_block = remote_highest_block.saturating_sub(follow_distance);
if next_required_block <= remote_follow_block {
Ok(Some(next_required_block..=remote_follow_block))
} else if next_required_block > remote_highest_block + 1 {
// If this is the case, the node must have gone "backwards" in terms of it's sync
// (i.e., it's head block is lower than it was before).
//
// We assume that the `follow_distance` should be sufficient to ensure this never
// happens, otherwise it is an error.
Err(Error::RemoteNotSynced {
next_required_block,
remote_highest_block,
follow_distance,
})
} else {
// Return an empty range.
Ok(None)
}
})
}
/// Downloads the `(block, deposit_root, deposit_count)` tuple from an eth1 node for the given
/// `block_number`.
///
/// Performs three async calls to an Eth1 HTTP JSON RPC endpoint.
fn download_eth1_block<'a>(
cache: Arc<Inner>,
block_number: u64,
) -> impl Future<Item = Eth1Block, Error = Error> + 'a {
// Performs a `get_blockByNumber` call to an eth1 node.
get_block(
&cache.config.read().endpoint,
block_number,
Duration::from_millis(GET_BLOCK_TIMEOUT_MILLIS),
)
.map_err(Error::BlockDownloadFailed)
.join3(
// Perform 2x `eth_call` via an eth1 node to read the deposit contract root and count.
get_deposit_root(
&cache.config.read().endpoint,
&cache.config.read().deposit_contract_address,
block_number,
Duration::from_millis(GET_DEPOSIT_ROOT_TIMEOUT_MILLIS),
)
.map_err(Error::GetDepositRootFailed),
get_deposit_count(
&cache.config.read().endpoint,
&cache.config.read().deposit_contract_address,
block_number,
Duration::from_millis(GET_DEPOSIT_COUNT_TIMEOUT_MILLIS),
)
.map_err(Error::GetDepositCountFailed),
)
.map(|(http_block, deposit_root, deposit_count)| Eth1Block {
hash: http_block.hash,
number: http_block.number,
timestamp: http_block.timestamp,
deposit_root,
deposit_count,
})
}
#[cfg(test)]
mod tests {
use super::*;
use toml;
#[test]
fn serde_serialize() {
let serialized =
toml::to_string(&Config::default()).expect("Should serde encode default config");
toml::from_str::<Config>(&serialized).expect("Should serde decode default config");
}
}

713
beacon_node/eth1/tests/test.rs Normal file
View File

@ -0,0 +1,713 @@
#![cfg(test)]
use environment::{Environment, EnvironmentBuilder};
use eth1::http::{get_deposit_count, get_deposit_logs_in_range, get_deposit_root, Block, Log};
use eth1::{Config, Service};
use eth1::{DepositCache, DepositLog};
use eth1_test_rig::GanacheEth1Instance;
use exit_future;
use futures::Future;
use merkle_proof::verify_merkle_proof;
use std::ops::Range;
use std::time::Duration;
use tokio::runtime::Runtime;
use tree_hash::TreeHash;
use types::{DepositData, EthSpec, Hash256, Keypair, MainnetEthSpec, MinimalEthSpec, Signature};
use web3::{transports::Http, Web3};
const DEPOSIT_CONTRACT_TREE_DEPTH: usize = 32;
pub fn new_env() -> Environment<MinimalEthSpec> {
EnvironmentBuilder::minimal()
// Use a single thread, so that when all tests are run in parallel they don't have so many
// threads.
.single_thread_tokio_runtime()
.expect("should start tokio runtime")
.null_logger()
.expect("should start null logger")
.build()
.expect("should build env")
}
fn timeout() -> Duration {
Duration::from_secs(1)
}
fn random_deposit_data() -> DepositData {
let keypair = Keypair::random();
let mut deposit = DepositData {
pubkey: keypair.pk.into(),
withdrawal_credentials: Hash256::zero(),
amount: 32_000_000_000,
signature: Signature::empty_signature().into(),
};
deposit.signature = deposit.create_signature(&keypair.sk, &MainnetEthSpec::default_spec());
deposit
}
/// Blocking operation to get the deposit logs from the `deposit_contract`.
fn blocking_deposit_logs(
runtime: &mut Runtime,
eth1: &GanacheEth1Instance,
range: Range<u64>,
) -> Vec<Log> {
runtime
.block_on(get_deposit_logs_in_range(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
range,
timeout(),
))
.expect("should get logs")
}
/// Blocking operation to get the deposit root from the `deposit_contract`.
fn blocking_deposit_root(
runtime: &mut Runtime,
eth1: &GanacheEth1Instance,
block_number: u64,
) -> Option<Hash256> {
runtime
.block_on(get_deposit_root(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
block_number,
timeout(),
))
.expect("should get deposit root")
}
/// Blocking operation to get the deposit count from the `deposit_contract`.
fn blocking_deposit_count(
runtime: &mut Runtime,
eth1: &GanacheEth1Instance,
block_number: u64,
) -> Option<u64> {
runtime
.block_on(get_deposit_count(
&eth1.endpoint(),
&eth1.deposit_contract.address(),
block_number,
timeout(),
))
.expect("should get deposit count")
}
fn get_block_number(runtime: &mut Runtime, web3: &Web3<Http>) -> u64 {
runtime
.block_on(web3.eth().block_number().map(|v| v.as_u64()))
.expect("should get block number")
}
mod auto_update {
use super::*;
#[test]
fn can_auto_update() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let now = get_block_number(runtime, &web3);
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: now,
lowest_cached_block_number: now,
follow_distance: 0,
block_cache_truncation: None,
..Config::default()
},
log,
);
// NOTE: this test is sensitive to the response speed of the external web3 server. If
// you're experiencing failures, try increasing the update_interval.
let update_interval = Duration::from_millis(2_000);
assert_eq!(
service.block_cache_len(),
0,
"should have imported no blocks"
);
assert_eq!(
service.deposit_cache_len(),
0,
"should have imported no deposits"
);
let (_exit, signal) = exit_future::signal();
runtime.executor().spawn(service.auto_update(signal));
let n = 4;
for _ in 0..n {
deposit_contract
.deposit(runtime, random_deposit_data())
.expect("should do first deposits");
}
std::thread::sleep(update_interval * 5);
assert!(
service.deposit_cache_len() >= n,
"should have imported n deposits"
);
for _ in 0..n {
deposit_contract
.deposit(runtime, random_deposit_data())
.expect("should do second deposits");
}
std::thread::sleep(update_interval * 4);
assert!(
service.block_cache_len() >= n * 2,
"should have imported all blocks"
);
assert!(
service.deposit_cache_len() >= n * 2,
"should have imported all deposits, not {}",
service.deposit_cache_len()
);
}
}
mod eth1_cache {
use super::*;
#[test]
fn simple_scenario() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
for follow_distance in 0..2 {
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let initial_block_number = get_block_number(runtime, &web3);
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: initial_block_number,
follow_distance,
..Config::default()
},
log.clone(),
);
// Create some blocks and then consume them, performing the test `rounds` times.
for round in 0..2 {
let blocks = 4;
let initial = if round == 0 {
initial_block_number
} else {
service
.blocks()
.read()
.highest_block_number()
.map(|n| n + follow_distance)
.expect("should have a latest block after the first round")
};
for _ in 0..blocks {
runtime
.block_on(eth1.ganache.evm_mine())
.expect("should mine block");
}
runtime
.block_on(service.update_block_cache())
.expect("should update cache");
runtime
.block_on(service.update_block_cache())
.expect("should update cache when nothing has changed");
assert_eq!(
service
.blocks()
.read()
.highest_block_number()
.map(|n| n + follow_distance),
Some(initial + blocks),
"should update {} blocks in round {} (follow {})",
blocks,
round,
follow_distance,
);
}
}
}
/// Tests the case where we attempt to download more blocks than will fit in the cache.
#[test]
fn big_skip() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let cache_len = 4;
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(runtime, &web3),
follow_distance: 0,
block_cache_truncation: Some(cache_len),
..Config::default()
},
log,
);
let blocks = cache_len * 2;
for _ in 0..blocks {
runtime
.block_on(eth1.ganache.evm_mine())
.expect("should mine block")
}
runtime
.block_on(service.update_block_cache())
.expect("should update cache");
assert_eq!(
service.block_cache_len(),
cache_len,
"should not grow cache beyond target"
);
}
/// Tests to ensure that the cache gets pruned when doing multiple downloads smaller than the
/// cache size.
#[test]
fn pruning() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let cache_len = 4;
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(runtime, &web3),
follow_distance: 0,
block_cache_truncation: Some(cache_len),
..Config::default()
},
log,
);
for _ in 0..4 {
for _ in 0..cache_len / 2 {
runtime
.block_on(eth1.ganache.evm_mine())
.expect("should mine block")
}
runtime
.block_on(service.update_block_cache())
.expect("should update cache");
}
assert_eq!(
service.block_cache_len(),
cache_len,
"should not grow cache beyond target"
);
}
#[test]
fn double_update() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let n = 16;
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
lowest_cached_block_number: get_block_number(runtime, &web3),
follow_distance: 0,
..Config::default()
},
log,
);
for _ in 0..n {
runtime
.block_on(eth1.ganache.evm_mine())
.expect("should mine block")
}
runtime
.block_on(
service
.update_block_cache()
.join(service.update_block_cache()),
)
.expect("should perform two simultaneous updates");
assert!(service.block_cache_len() >= n, "should grow the cache");
}
}
mod deposit_tree {
use super::*;
#[test]
fn updating() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let n = 4;
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let start_block = get_block_number(runtime, &web3);
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: start_block,
follow_distance: 0,
..Config::default()
},
log,
);
for round in 0..3 {
let deposits: Vec<_> = (0..n).into_iter().map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(runtime, deposit.clone())
.expect("should perform a deposit");
}
runtime
.block_on(service.update_deposit_cache())
.expect("should perform update");
runtime
.block_on(service.update_deposit_cache())
.expect("should perform update when nothing has changed");
let first = n * round;
let last = n * (round + 1);
let (_root, local_deposits) = service
.deposits()
.read()
.cache
.get_deposits(first..last, last, 32)
.expect(&format!("should get deposits in round {}", round));
assert_eq!(
local_deposits.len(),
n as usize,
"should get the right number of deposits in round {}",
round
);
assert_eq!(
local_deposits
.iter()
.map(|d| d.data.clone())
.collect::<Vec<_>>(),
deposits.to_vec(),
"obtained deposits should match those submitted in round {}",
round
);
}
}
#[test]
fn double_update() {
let mut env = new_env();
let log = env.core_context().log;
let runtime = env.runtime();
let n = 8;
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let start_block = get_block_number(runtime, &web3);
let service = Service::new(
Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: start_block,
lowest_cached_block_number: start_block,
follow_distance: 0,
..Config::default()
},
log,
);
let deposits: Vec<_> = (0..n).into_iter().map(|_| random_deposit_data()).collect();
for deposit in &deposits {
deposit_contract
.deposit(runtime, deposit.clone())
.expect("should perform a deposit");
}
runtime
.block_on(
service
.update_deposit_cache()
.join(service.update_deposit_cache()),
)
.expect("should perform two updates concurrently");
assert_eq!(service.deposit_cache_len(), n);
}
#[test]
fn cache_consistency() {
let mut env = new_env();
let runtime = env.runtime();
let n = 8;
let deposits: Vec<_> = (0..n).into_iter().map(|_| random_deposit_data()).collect();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let mut deposit_roots = vec![];
let mut deposit_counts = vec![];
// Perform deposits to the smart contract, recording it's state along the way.
for deposit in &deposits {
deposit_contract
.deposit(runtime, deposit.clone())
.expect("should perform a deposit");
let block_number = get_block_number(runtime, &web3);
deposit_roots.push(
blocking_deposit_root(runtime, &eth1, block_number)
.expect("should get root if contract exists"),
);
deposit_counts.push(
blocking_deposit_count(runtime, &eth1, block_number)
.expect("should get count if contract exists"),
);
}
let mut tree = DepositCache::default();
// Pull all the deposit logs from the contract.
let block_number = get_block_number(runtime, &web3);
let logs: Vec<_> = blocking_deposit_logs(runtime, &eth1, 0..block_number)
.iter()
.map(|raw| DepositLog::from_log(raw).expect("should parse deposit log"))
.inspect(|log| {
tree.insert_log(log.clone())
.expect("should add consecutive logs")
})
.collect();
// Check the logs for invariants.
for i in 0..logs.len() {
let log = &logs[i];
assert_eq!(
log.deposit_data, deposits[i],
"log {} should have correct deposit data",
i
);
assert_eq!(log.index, i as u64, "log {} should have correct index", i);
}
// For each deposit test some more invariants
for i in 0..n {
// Ensure the deposit count from the smart contract was as expected.
assert_eq!(
deposit_counts[i],
i as u64 + 1,
"deposit count should be accurate"
);
// Ensure that the root from the deposit tree matches what the contract reported.
let (root, deposits) = tree
.get_deposits(0..i as u64, deposit_counts[i], DEPOSIT_CONTRACT_TREE_DEPTH)
.expect("should get deposits");
assert_eq!(
root, deposit_roots[i],
"tree deposit root {} should match the contract",
i
);
// Ensure that the deposits all prove into the root from the smart contract.
let deposit_root = deposit_roots[i];
for (j, deposit) in deposits.iter().enumerate() {
assert!(
verify_merkle_proof(
Hash256::from_slice(&deposit.data.tree_hash_root()),
&deposit.proof,
DEPOSIT_CONTRACT_TREE_DEPTH + 1,
j,
deposit_root
),
"deposit merkle proof should prove into deposit contract root"
)
}
}
}
}
/// Tests for the base HTTP requests and response handlers.
mod http {
use super::*;
fn get_block(runtime: &mut Runtime, eth1: &GanacheEth1Instance, block_number: u64) -> Block {
runtime
.block_on(eth1::http::get_block(
&eth1.endpoint(),
block_number,
timeout(),
))
.expect("should get block number")
}
#[test]
fn incrementing_deposits() {
let mut env = new_env();
let runtime = env.runtime();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let block_number = get_block_number(runtime, &web3);
let logs = blocking_deposit_logs(runtime, &eth1, 0..block_number);
assert_eq!(logs.len(), 0);
let mut old_root = blocking_deposit_root(runtime, &eth1, block_number);
let mut old_block = get_block(runtime, &eth1, block_number);
let mut old_block_number = block_number;
assert_eq!(
blocking_deposit_count(runtime, &eth1, block_number),
Some(0),
"should have deposit count zero"
);
for i in 1..=8 {
runtime
.block_on(eth1.ganache.increase_time(1))
.expect("should be able to increase time on ganache");
deposit_contract
.deposit(runtime, random_deposit_data())
.expect("should perform a deposit");
// Check the logs.
let block_number = get_block_number(runtime, &web3);
let logs = blocking_deposit_logs(runtime, &eth1, 0..block_number);
assert_eq!(logs.len(), i, "the number of logs should be as expected");
// Check the deposit count.
assert_eq!(
blocking_deposit_count(runtime, &eth1, block_number),
Some(i as u64),
"should have a correct deposit count"
);
// Check the deposit root.
let new_root = blocking_deposit_root(runtime, &eth1, block_number);
assert_ne!(
new_root, old_root,
"deposit root should change with each deposit"
);
old_root = new_root;
// Check the block hash.
let new_block = get_block(runtime, &eth1, block_number);
assert_ne!(
new_block.hash, old_block.hash,
"block hash should change with each deposit"
);
// Check to ensure the timestamp is increasing
assert!(
old_block.timestamp <= new_block.timestamp,
"block timestamp should increase"
);
old_block = new_block.clone();
// Check the block number.
assert!(
block_number > old_block_number,
"block number should increase"
);
old_block_number = block_number;
// Check to ensure the block root is changing
assert_ne!(
new_root,
Some(new_block.hash),
"the deposit root should be different to the block hash"
);
}
}
}

2
beacon_node/eth2-libp2p/src/behaviour.rs
View File

@ -69,7 +69,7 @@ impl<TSubstream: AsyncRead + AsyncWrite> Behaviour<TSubstream> {
);
Ok(Behaviour {
eth2_rpc: RPC::new(log),
eth2_rpc: RPC::new(log.clone()),
gossipsub: Gossipsub::new(local_peer_id.clone(), net_conf.gs_config.clone()),
discovery: Discovery::new(local_key, net_conf, log)?,
ping: Ping::new(ping_config),

4
beacon_node/eth2-libp2p/src/rpc/mod.rs
View File

@ -69,8 +69,8 @@ pub struct RPC<TSubstream> {
}
impl<TSubstream> RPC<TSubstream> {
pub fn new(log: &slog::Logger) -> Self {
let log = log.new(o!("Service" => "Libp2p-RPC"));
pub fn new(log: slog::Logger) -> Self {
let log = log.new(o!("service" => "libp2p_rpc"));
RPC {
events: Vec::new(),
marker: PhantomData,

28
beacon_node/genesis/Cargo.toml Normal file
View File

@ -0,0 +1,28 @@
[package]
name = "genesis"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dev-dependencies]
eth1_test_rig = { path = "../../tests/eth1_test_rig" }
futures = "0.1.25"
[dependencies]
futures = "0.1.25"
types = { path = "../../eth2/types"}
environment = { path = "../../lighthouse/environment"}
eth1 = { path = "../eth1"}
rayon = "1.0"
state_processing = { path = "../../eth2/state_processing" }
merkle_proof = { path = "../../eth2/utils/merkle_proof" }
eth2_ssz = "0.1"
eth2_hashing = { path = "../../eth2/utils/eth2_hashing" }
tree_hash = "0.1"
tokio = "0.1.17"
parking_lot = "0.7"
slog = "^2.2.3"
exit-future = "0.1.4"
serde = "1.0"
serde_derive = "1.0"
int_to_bytes = { path = "../../eth2/utils/int_to_bytes" }

44
beacon_node/genesis/src/common.rs Normal file
View File

@ -0,0 +1,44 @@
use int_to_bytes::int_to_bytes32;
use merkle_proof::MerkleTree;
use rayon::prelude::*;
use tree_hash::TreeHash;
use types::{ChainSpec, Deposit, DepositData, Hash256};
/// Accepts the genesis block validator `DepositData` list and produces a list of `Deposit`, with
/// proofs.
pub fn genesis_deposits(
deposit_data: Vec<DepositData>,
spec: &ChainSpec,
) -> Result<Vec<Deposit>, String> {
let deposit_root_leaves = deposit_data
.par_iter()
.map(|data| Hash256::from_slice(&data.tree_hash_root()))
.collect::<Vec<_>>();
let mut proofs = vec![];
let depth = spec.deposit_contract_tree_depth as usize;
let mut tree = MerkleTree::create(&[], depth);
for (i, deposit_leaf) in deposit_root_leaves.iter().enumerate() {
if let Err(_) = tree.push_leaf(*deposit_leaf, depth) {
return Err(String::from("Failed to push leaf"));
}
let (_, mut proof) = tree.generate_proof(i, depth);
proof.push(Hash256::from_slice(&int_to_bytes32((i + 1) as u64)));
assert_eq!(
proof.len(),
depth + 1,
"Deposit proof should be correct len"
);
proofs.push(proof);
}
Ok(deposit_data
.into_iter()
.zip(proofs.into_iter())
.map(|(data, proof)| (data, proof.into()))
.map(|(data, proof)| Deposit { proof, data })
.collect())
}

379
beacon_node/genesis/src/eth1_genesis_service.rs Normal file
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@ -0,0 +1,379 @@
pub use crate::{common::genesis_deposits, interop::interop_genesis_state};
pub use eth1::Config as Eth1Config;
use eth1::{DepositLog, Eth1Block, Service};
use futures::{
future,
future::{loop_fn, Loop},
Future,
};
use parking_lot::Mutex;
use slog::{debug, error, info, Logger};
use state_processing::{
initialize_beacon_state_from_eth1, is_valid_genesis_state,
per_block_processing::process_deposit, process_activations,
};
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::timer::Delay;
use types::{BeaconState, ChainSpec, Deposit, Eth1Data, EthSpec, Hash256};
/// Provides a service that connects to some Eth1 HTTP JSON-RPC endpoint and maintains a cache of eth1
/// blocks and deposits, listening for the eth1 block that triggers eth2 genesis and returning the
/// genesis `BeaconState`.
///
/// Is a wrapper around the `Service` struct of the `eth1` crate.
#[derive(Clone)]
pub struct Eth1GenesisService {
/// The underlying service. Access to this object is only required for testing and diagnosis.
pub core: Service,
/// The highest block number we've processed and determined it does not trigger genesis.
highest_processed_block: Arc<Mutex<Option<u64>>>,
/// Enabled when the genesis service should start downloading blocks.
///
/// It is disabled until there are enough deposit logs to start syncing.
sync_blocks: Arc<Mutex<bool>>,
}
impl Eth1GenesisService {
/// Creates a new service. Does not attempt to connect to the Eth1 node.
pub fn new(config: Eth1Config, log: Logger) -> Self {
Self {
core: Service::new(config, log),
highest_processed_block: Arc::new(Mutex::new(None)),
sync_blocks: Arc::new(Mutex::new(false)),
}
}
fn first_viable_eth1_block(&self, min_genesis_active_validator_count: usize) -> Option<u64> {
if self.core.deposit_cache_len() < min_genesis_active_validator_count {
None
} else {
self.core
.deposits()
.read()
.cache
.get(min_genesis_active_validator_count.saturating_sub(1))
.map(|log| log.block_number)
}
}
/// Returns a future that will keep updating the cache and resolve once it has discovered the
/// first Eth1 block that triggers an Eth2 genesis.
///
/// ## Returns
///
/// - `Ok(state)` once the canonical eth2 genesis state has been discovered.
/// - `Err(e)` if there is some internal error during updates.
pub fn wait_for_genesis_state<E: EthSpec>(
&self,
update_interval: Duration,
spec: ChainSpec,
) -> impl Future<Item = BeaconState<E>, Error = String> {
let service = self.clone();
loop_fn::<(ChainSpec, Option<BeaconState<E>>), _, _, _>(
(spec, None),
move |(spec, state)| {
let service_1 = service.clone();
let service_2 = service.clone();
let service_3 = service.clone();
let service_4 = service.clone();
let log = service.core.log.clone();
let min_genesis_active_validator_count = spec.min_genesis_active_validator_count;
Delay::new(Instant::now() + update_interval)
.map_err(|e| format!("Delay between genesis deposit checks failed: {:?}", e))
.and_then(move |()| {
service_1
.core
.update_deposit_cache()
.map_err(|e| format!("{:?}", e))
})
.then(move |update_result| {
if let Err(e) = update_result {
error!(
log,
"Failed to update eth1 deposit cache";
"error" => e
)
}
// Do not exit the loop if there is an error whilst updating.
Ok(())
})
// Only enable the `sync_blocks` flag if there are enough deposits to feasibly
// trigger genesis.
//
// Note: genesis is triggered by the _active_ validator count, not just the
// deposit count, so it's possible that block downloads are started too early.
// This is just wasteful, not erroneous.
.and_then(move |()| {
let mut sync_blocks = service_2.sync_blocks.lock();
if !(*sync_blocks) {
if let Some(viable_eth1_block) = service_2.first_viable_eth1_block(
min_genesis_active_validator_count as usize,
) {
info!(
service_2.core.log,
"Minimum genesis deposit count met";
"deposit_count" => min_genesis_active_validator_count,
"block_number" => viable_eth1_block,
);
service_2.core.set_lowest_cached_block(viable_eth1_block);
*sync_blocks = true
}
}
Ok(*sync_blocks)
})
.and_then(move |should_update_block_cache| {
let maybe_update_future: Box<dyn Future<Item = _, Error = _> + Send> =
if should_update_block_cache {
Box::new(service_3.core.update_block_cache().then(
move |update_result| {
if let Err(e) = update_result {
error!(
service_3.core.log,
"Failed to update eth1 block cache";
"error" => format!("{:?}", e)
);
}
// Do not exit the loop if there is an error whilst updating.
Ok(())
},
))
} else {
Box::new(future::ok(()))
};
maybe_update_future
})
.and_then(move |()| {
if let Some(genesis_state) = service_4
.scan_new_blocks::<E>(&spec)
.map_err(|e| format!("Failed to scan for new blocks: {}", e))?
{
Ok(Loop::Break((spec, genesis_state)))
} else {
debug!(
service_4.core.log,
"No eth1 genesis block found";
"cached_blocks" => service_4.core.block_cache_len(),
"cached_deposits" => service_4.core.deposit_cache_len(),
"cache_head" => service_4.highest_known_block(),
);
Ok(Loop::Continue((spec, state)))
}
})
},
)
.map(|(_spec, state)| state)
}
/// Processes any new blocks that have appeared since this function was last run.
///
/// A `highest_processed_block` value is stored in `self`. This function will find any blocks
/// in it's caches that have a higher block number than `highest_processed_block` and check to
/// see if they would trigger an Eth2 genesis.
///
/// Blocks are always tested in increasing order, starting with the lowest unknown block
/// number in the cache.
///
/// ## Returns
///
/// - `Ok(Some(eth1_block))` if a previously-unprocessed block would trigger Eth2 genesis.
/// - `Ok(None)` if none of the new blocks would trigger genesis, or there were no new blocks.
/// - `Err(_)` if there was some internal error.
fn scan_new_blocks<E: EthSpec>(
&self,
spec: &ChainSpec,
) -> Result<Option<BeaconState<E>>, String> {
let genesis_trigger_eth1_block = self
.core
.blocks()
.read()
.iter()
// It's only worth scanning blocks that have timestamps _after_ genesis time. It's
// impossible for any other block to trigger genesis.
.filter(|block| block.timestamp >= spec.min_genesis_time)
// The block cache might be more recently updated than deposit cache. Restrict any
// block numbers that are not known by all caches.
.filter(|block| {
self.highest_known_block()
.map(|n| block.number <= n)
.unwrap_or_else(|| false)
})
.find(|block| {
let mut highest_processed_block = self.highest_processed_block.lock();
let next_new_block_number =
highest_processed_block.map(|n| n + 1).unwrap_or_else(|| 0);
if block.number < next_new_block_number {
return false;
}
self.is_valid_genesis_eth1_block::<E>(block, &spec)
.and_then(|val| {
*highest_processed_block = Some(block.number);
Ok(val)
})
.unwrap_or_else(|_| {
error!(
self.core.log,
"Failed to detect if eth1 block triggers genesis";
"eth1_block_number" => block.number,
"eth1_block_hash" => format!("{}", block.hash),
);
false
})
})
.cloned();
if let Some(eth1_block) = genesis_trigger_eth1_block {
debug!(
self.core.log,
"All genesis conditions met";
"eth1_block_height" => eth1_block.number,
);
let genesis_state = self
.genesis_from_eth1_block(eth1_block.clone(), &spec)
.map_err(|e| format!("Failed to generate valid genesis state : {}", e))?;
info!(
self.core.log,
"Deposit contract genesis complete";
"eth1_block_height" => eth1_block.number,
"validator_count" => genesis_state.validators.len(),
);
Ok(Some(genesis_state))
} else {
Ok(None)
}
}
/// Produces an eth2 genesis `BeaconState` from the given `eth1_block`.
///
/// ## Returns
///
/// - Ok(genesis_state) if all went well.
/// - Err(e) if the given `eth1_block` was not a viable block to trigger genesis or there was
/// an internal error.
fn genesis_from_eth1_block<E: EthSpec>(
&self,
eth1_block: Eth1Block,
spec: &ChainSpec,
) -> Result<BeaconState<E>, String> {
let deposit_logs = self
.core
.deposits()
.read()
.cache
.iter()
.take_while(|log| log.block_number <= eth1_block.number)
.map(|log| log.deposit_data.clone())
.collect::<Vec<_>>();
let genesis_state = initialize_beacon_state_from_eth1(
eth1_block.hash,
eth1_block.timestamp,
genesis_deposits(deposit_logs, &spec)?,
&spec,
)
.map_err(|e| format!("Unable to initialize genesis state: {:?}", e))?;
if is_valid_genesis_state(&genesis_state, &spec) {
Ok(genesis_state)
} else {
Err("Generated state was not valid.".to_string())
}
}
/// A cheap (compared to using `initialize_beacon_state_from_eth1) method for determining if some
/// `target_block` will trigger genesis.
fn is_valid_genesis_eth1_block<E: EthSpec>(
&self,
target_block: &Eth1Block,
spec: &ChainSpec,
) -> Result<bool, String> {
if target_block.timestamp < spec.min_genesis_time {
Ok(false)
} else {
let mut local_state: BeaconState<E> = BeaconState::new(
0,
Eth1Data {
block_hash: Hash256::zero(),
deposit_root: Hash256::zero(),
deposit_count: 0,
},
&spec,
);
local_state.genesis_time = target_block.timestamp;
self.deposit_logs_at_block(target_block.number)
.iter()
// TODO: add the signature field back.
//.filter(|deposit_log| deposit_log.signature_is_valid)
.map(|deposit_log| Deposit {
proof: vec![Hash256::zero(); spec.deposit_contract_tree_depth as usize].into(),
data: deposit_log.deposit_data.clone(),
})
.try_for_each(|deposit| {
// No need to verify proofs in order to test if some block will trigger genesis.
const PROOF_VERIFICATION: bool = false;
// Note: presently all the signatures are verified each time this function is
// run.
//
// It would be more efficient to pre-verify signatures, filter out the invalid
// ones and disable verification for `process_deposit`.
//
// This is only more efficient in scenarios where `min_genesis_time` occurs
// _before_ `min_validator_count` is met. We're unlikely to see this scenario
// in testnets (`min_genesis_time` is usually `0`) and I'm not certain it will
// happen for the real, production deposit contract.
process_deposit(&mut local_state, &deposit, spec, PROOF_VERIFICATION)
.map_err(|e| format!("Error whilst processing deposit: {:?}", e))
})?;
process_activations(&mut local_state, spec);
Ok(is_valid_genesis_state(&local_state, spec))
}
}
/// Returns the `block_number` of the highest (by block number) block in the cache.
///
/// Takes the lower block number of the deposit and block caches to ensure this number is safe.
fn highest_known_block(&self) -> Option<u64> {
let block_cache = self.core.blocks().read().highest_block_number()?;
let deposit_cache = self.core.deposits().read().last_processed_block?;
Some(std::cmp::min(block_cache, deposit_cache))
}
/// Returns all deposit logs included in `block_number` and all prior blocks.
fn deposit_logs_at_block(&self, block_number: u64) -> Vec<DepositLog> {
self.core
.deposits()
.read()
.cache
.iter()
.take_while(|log| log.block_number <= block_number)
.cloned()
.collect()
}
/// Returns the `Service` contained in `self`.
pub fn into_core_service(self) -> Service {
self.core
}
}

142
beacon_node/genesis/src/interop.rs Normal file
View File

@ -0,0 +1,142 @@
use crate::common::genesis_deposits;
use eth2_hashing::hash;
use rayon::prelude::*;
use ssz::Encode;
use state_processing::initialize_beacon_state_from_eth1;
use std::time::SystemTime;
use tree_hash::SignedRoot;
use types::{
BeaconState, ChainSpec, DepositData, Domain, EthSpec, Fork, Hash256, Keypair, PublicKey,
Signature,
};
/// Builds a genesis state as defined by the Eth2 interop procedure (see below).
///
/// Reference:
/// https://github.com/ethereum/eth2.0-pm/tree/6e41fcf383ebeb5125938850d8e9b4e9888389b4/interop/mocked_start
pub fn interop_genesis_state<T: EthSpec>(
keypairs: &[Keypair],
genesis_time: u64,
spec: &ChainSpec,
) -> Result<BeaconState<T>, String> {
let eth1_block_hash = Hash256::from_slice(&[0x42; 32]);
let eth1_timestamp = 2_u64.pow(40);
let amount = spec.max_effective_balance;
let withdrawal_credentials = |pubkey: &PublicKey| {
let mut credentials = hash(&pubkey.as_ssz_bytes());
credentials[0] = spec.bls_withdrawal_prefix_byte;
Hash256::from_slice(&credentials)
};
let datas = keypairs
.into_par_iter()
.map(|keypair| {
let mut data = DepositData {
withdrawal_credentials: withdrawal_credentials(&keypair.pk),
pubkey: keypair.pk.clone().into(),
amount,
signature: Signature::empty_signature().into(),
};
let domain = spec.get_domain(
spec.genesis_slot.epoch(T::slots_per_epoch()),
Domain::Deposit,
&Fork::default(),
);
data.signature = Signature::new(&data.signed_root()[..], domain, &keypair.sk).into();
data
})
.collect::<Vec<_>>();
let mut state = initialize_beacon_state_from_eth1(
eth1_block_hash,
eth1_timestamp,
genesis_deposits(datas, spec)?,
spec,
)
.map_err(|e| format!("Unable to initialize genesis state: {:?}", e))?;
state.genesis_time = genesis_time;
// Invalid all the caches after all the manual state surgery.
state.drop_all_caches();
Ok(state)
}
/// Returns the system time, mod 30 minutes.
///
/// Used for easily creating testnets.
pub fn recent_genesis_time(minutes: u64) -> u64 {
let now = SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH)
.unwrap()
.as_secs();
let secs_after_last_period = now.checked_rem(minutes * 60).unwrap_or(0);
now - secs_after_last_period
}
#[cfg(test)]
mod test {
use super::*;
use types::{test_utils::generate_deterministic_keypairs, EthSpec, MinimalEthSpec};
type TestEthSpec = MinimalEthSpec;
#[test]
fn interop_state() {
let validator_count = 16;
let genesis_time = 42;
let spec = &TestEthSpec::default_spec();
let keypairs = generate_deterministic_keypairs(validator_count);
let state = interop_genesis_state::<TestEthSpec>(&keypairs, genesis_time, spec)
.expect("should build state");
assert_eq!(
state.eth1_data.block_hash,
Hash256::from_slice(&[0x42; 32]),
"eth1 block hash should be co-ordinated junk"
);
assert_eq!(
state.genesis_time, genesis_time,
"genesis time should be as specified"
);
for b in &state.balances {
assert_eq!(
*b, spec.max_effective_balance,
"validator balances should be max effective balance"
);
}
for v in &state.validators {
let creds = v.withdrawal_credentials.as_bytes();
assert_eq!(
creds[0], spec.bls_withdrawal_prefix_byte,
"first byte of withdrawal creds should be bls prefix"
);
assert_eq!(
&creds[1..],
&hash(&v.pubkey.as_ssz_bytes())[1..],
"rest of withdrawal creds should be pubkey hash"
)
}
assert_eq!(
state.balances.len(),
validator_count,
"validator balances len should be correct"
);
assert_eq!(
state.validators.len(),
validator_count,
"validator count should be correct"
);
}
}

31
beacon_node/genesis/src/lib.rs Normal file
View File

@ -0,0 +1,31 @@
mod common;
mod eth1_genesis_service;
mod interop;
pub use eth1::Config as Eth1Config;
pub use eth1_genesis_service::Eth1GenesisService;
pub use interop::{interop_genesis_state, recent_genesis_time};
pub use types::test_utils::generate_deterministic_keypairs;
use ssz::Decode;
use std::fs::File;
use std::io::prelude::*;
use std::path::PathBuf;
use types::{BeaconState, EthSpec};
/// Load a `BeaconState` from the given `path`. The file should contain raw SSZ bytes (i.e., no
/// ASCII encoding or schema).
pub fn state_from_ssz_file<E: EthSpec>(path: PathBuf) -> Result<BeaconState<E>, String> {
File::open(path.clone())
.map_err(move |e| format!("Unable to open SSZ genesis state file {:?}: {:?}", path, e))
.and_then(|mut file| {
let mut bytes = vec![];
file.read_to_end(&mut bytes)
.map_err(|e| format!("Failed to read SSZ file: {:?}", e))?;
Ok(bytes)
})
.and_then(|bytes| {
BeaconState::from_ssz_bytes(&bytes)
.map_err(|e| format!("Unable to parse SSZ genesis state file: {:?}", e))
})
}

105
beacon_node/genesis/tests/tests.rs Normal file
View File

@ -0,0 +1,105 @@
//! NOTE: These tests will not pass unless ganache-cli is running on `ENDPOINT` (see below).
//!
//! You can start a suitable instance using the `ganache_test_node.sh` script in the `scripts`
//! dir in the root of the `lighthouse` repo.
#![cfg(test)]
use environment::{Environment, EnvironmentBuilder};
use eth1_test_rig::{DelayThenDeposit, GanacheEth1Instance};
use futures::Future;
use genesis::{Eth1Config, Eth1GenesisService};
use state_processing::is_valid_genesis_state;
use std::time::Duration;
use types::{test_utils::generate_deterministic_keypair, Hash256, MinimalEthSpec};
pub fn new_env() -> Environment<MinimalEthSpec> {
EnvironmentBuilder::minimal()
.single_thread_tokio_runtime()
.expect("should start tokio runtime")
.null_logger()
.expect("should start null logger")
.build()
.expect("should build env")
}
#[test]
fn basic() {
let mut env = new_env();
let log = env.core_context().log;
let mut spec = env.eth2_config().spec.clone();
let runtime = env.runtime();
let eth1 = runtime
.block_on(GanacheEth1Instance::new())
.expect("should start eth1 environment");
let deposit_contract = &eth1.deposit_contract;
let web3 = eth1.web3();
let now = runtime
.block_on(web3.eth().block_number().map(|v| v.as_u64()))
.expect("should get block number");
let service = Eth1GenesisService::new(
Eth1Config {
endpoint: eth1.endpoint(),
deposit_contract_address: deposit_contract.address(),
deposit_contract_deploy_block: now,
lowest_cached_block_number: now,
follow_distance: 0,
block_cache_truncation: None,
..Eth1Config::default()
},
log,
);
// NOTE: this test is sensitive to the response speed of the external web3 server. If
// you're experiencing failures, try increasing the update_interval.
let update_interval = Duration::from_millis(500);
spec.min_genesis_time = 0;
spec.min_genesis_active_validator_count = 8;
let deposits = (0..spec.min_genesis_active_validator_count + 2)
.into_iter()
.map(|i| {
deposit_contract.deposit_helper::<MinimalEthSpec>(
generate_deterministic_keypair(i as usize),
Hash256::from_low_u64_le(i),
32_000_000_000,
)
})
.map(|deposit| DelayThenDeposit {
delay: Duration::from_secs(0),
deposit,
})
.collect::<Vec<_>>();
let deposit_future = deposit_contract.deposit_multiple(deposits.clone());
let wait_future =
service.wait_for_genesis_state::<MinimalEthSpec>(update_interval, spec.clone());
let state = runtime
.block_on(deposit_future.join(wait_future))
.map(|(_, state)| state)
.expect("should finish waiting for genesis");
// Note: using ganache these deposits are 1-per-block, therefore we know there should only be
// the minimum number of validators.
assert_eq!(
state.validators.len(),
spec.min_genesis_active_validator_count as usize,
"should have expected validator count"
);
assert!(state.genesis_time > 0, "should have some genesis time");
assert!(
is_valid_genesis_state(&state, &spec),
"should be valid genesis state"
);
assert!(
is_valid_genesis_state(&state, &spec),
"should be valid genesis state"
);
}

2
beacon_node/network/src/message_handler.rs
View File

@ -51,7 +51,7 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
executor: &tokio::runtime::TaskExecutor,
log: slog::Logger,
) -> error::Result<mpsc::UnboundedSender<HandlerMessage>> {
let message_handler_log = log.new(o!("Service"=> "Message Handler"));
let message_handler_log = log.new(o!("service"=> "msg_handler"));
trace!(message_handler_log, "Service starting");
let (handler_send, handler_recv) = mpsc::unbounded_channel();

13
beacon_node/network/src/service.rs
View File

@ -10,7 +10,7 @@ use eth2_libp2p::{PubsubMessage, RPCEvent};
use futures::prelude::*;
use futures::Stream;
use parking_lot::Mutex;
use slog::{debug, info, o, trace};
use slog::{debug, info, trace};
use std::sync::Arc;
use tokio::runtime::TaskExecutor;
use tokio::sync::{mpsc, oneshot};
@ -29,15 +29,18 @@ impl<T: BeaconChainTypes + 'static> Service<T> {
beacon_chain: Arc<BeaconChain<T>>,
config: &NetworkConfig,
executor: &TaskExecutor,
log: slog::Logger,
network_log: slog::Logger,
) -> error::Result<(Arc<Self>, mpsc::UnboundedSender<NetworkMessage>)> {
// build the network channel
let (network_send, network_recv) = mpsc::unbounded_channel::<NetworkMessage>();
// launch message handler thread
let message_handler_send =
MessageHandler::spawn(beacon_chain, network_send.clone(), executor, log.clone())?;
let message_handler_send = MessageHandler::spawn(
beacon_chain,
network_send.clone(),
executor,
network_log.clone(),
)?;
let network_log = log.new(o!("Service" => "Network"));
// launch libp2p service
let libp2p_service = Arc::new(Mutex::new(LibP2PService::new(
config.clone(),

2
beacon_node/network/src/sync/simple_sync.rs
View File

@ -75,7 +75,7 @@ impl<T: BeaconChainTypes> MessageProcessor<T> {
network_send: mpsc::UnboundedSender<NetworkMessage>,
log: &slog::Logger,
) -> Self {
let sync_logger = log.new(o!("Service"=> "Sync"));
let sync_logger = log.new(o!("service"=> "sync"));
let sync_network_context = NetworkContext::new(network_send.clone(), sync_logger.clone());
// spawn the sync thread

28
beacon_node/rest_api/src/lib.rs
View File

@ -26,7 +26,8 @@ use hyper::rt::Future;
use hyper::service::Service;
use hyper::{Body, Method, Request, Response, Server};
use parking_lot::RwLock;
use slog::{info, o, warn};
use slog::{info, warn};
use std::net::SocketAddr;
use std::ops::Deref;
use std::path::PathBuf;
use std::sync::Arc;
@ -35,7 +36,7 @@ use tokio::sync::mpsc;
use url_query::UrlQuery;
pub use beacon::{BlockResponse, HeadResponse, StateResponse};
pub use config::Config as ApiConfig;
pub use config::Config;
type BoxFut = Box<dyn Future<Item = Response<Body>, Error = ApiError> + Send>;
@ -196,16 +197,14 @@ impl<T: BeaconChainTypes> Service for ApiService<T> {
}
pub fn start_server<T: BeaconChainTypes>(
config: &ApiConfig,
config: &Config,
executor: &TaskExecutor,
beacon_chain: Arc<BeaconChain<T>>,
network_info: NetworkInfo<T>,
db_path: PathBuf,
eth2_config: Eth2Config,
log: &slog::Logger,
) -> Result<exit_future::Signal, hyper::Error> {
let log = log.new(o!("Service" => "Api"));
log: slog::Logger,
) -> Result<(exit_future::Signal, SocketAddr), hyper::Error> {
// build a channel to kill the HTTP server
let (exit_signal, exit) = exit_future::signal();
@ -237,8 +236,11 @@ pub fn start_server<T: BeaconChainTypes>(
};
let log_clone = log.clone();
let server = Server::bind(&bind_addr)
.serve(service)
let server = Server::bind(&bind_addr).serve(service);
let actual_listen_addr = server.local_addr();
let server_future = server
.with_graceful_shutdown(server_exit)
.map_err(move |e| {
warn!(
@ -250,13 +252,13 @@ pub fn start_server<T: BeaconChainTypes>(
info!(
log,
"REST API started";
"address" => format!("{}", config.listen_address),
"port" => config.port,
"address" => format!("{}", actual_listen_addr.ip()),
"port" => actual_listen_addr.port(),
);
executor.spawn(server);
executor.spawn(server_future);
Ok(exit_signal)
Ok((exit_signal, actual_listen_addr))
}
#[derive(Clone)]

12
beacon_node/rpc/src/attestation.rs
View File

@ -16,13 +16,23 @@ use std::sync::Arc;
use tokio::sync::mpsc;
use types::{Attestation, Slot};
#[derive(Clone)]
pub struct AttestationServiceInstance<T: BeaconChainTypes> {
pub chain: Arc<BeaconChain<T>>,
pub network_chan: mpsc::UnboundedSender<NetworkMessage>,
pub log: slog::Logger,
}
// NOTE: Deriving Clone puts bogus bounds on T, so we implement it manually.
impl<T: BeaconChainTypes> Clone for AttestationServiceInstance<T> {
fn clone(&self) -> Self {
Self {
chain: self.chain.clone(),
network_chan: self.network_chan.clone(),
log: self.log.clone(),
}
}
}
impl<T: BeaconChainTypes> AttestationService for AttestationServiceInstance<T> {
/// Produce the `AttestationData` for signing by a validator.
fn produce_attestation_data(

12
beacon_node/rpc/src/beacon_block.rs
View File

@ -16,13 +16,23 @@ use std::sync::Arc;
use tokio::sync::mpsc;
use types::{BeaconBlock, Signature, Slot};
#[derive(Clone)]
pub struct BeaconBlockServiceInstance<T: BeaconChainTypes> {
pub chain: Arc<BeaconChain<T>>,
pub network_chan: mpsc::UnboundedSender<NetworkMessage>,
pub log: Logger,
}
// NOTE: Deriving Clone puts bogus bounds on T, so we implement it manually.
impl<T: BeaconChainTypes> Clone for BeaconBlockServiceInstance<T> {
fn clone(&self) -> Self {
Self {
chain: self.chain.clone(),
network_chan: self.network_chan.clone(),
log: self.log.clone(),
}
}
}
impl<T: BeaconChainTypes> BeaconBlockService for BeaconBlockServiceInstance<T> {
/// Produce a `BeaconBlock` for signing by a validator.
fn produce_beacon_block(

11
beacon_node/rpc/src/beacon_node.rs
View File

@ -6,12 +6,21 @@ use protos::services_grpc::BeaconNodeService;
use slog::{trace, warn};
use std::sync::Arc;
#[derive(Clone)]
pub struct BeaconNodeServiceInstance<T: BeaconChainTypes> {
pub chain: Arc<BeaconChain<T>>,
pub log: slog::Logger,
}
// NOTE: Deriving Clone puts bogus bounds on T, so we implement it manually.
impl<T: BeaconChainTypes> Clone for BeaconNodeServiceInstance<T> {
fn clone(&self) -> Self {
Self {
chain: self.chain.clone(),
log: self.log.clone(),
}
}
}
impl<T: BeaconChainTypes> BeaconNodeService for BeaconNodeServiceInstance<T> {
/// Provides basic node information.
fn info(&mut self, ctx: RpcContext, _req: Empty, sink: UnarySink<NodeInfoResponse>) {

11
beacon_node/rpc/src/lib.rs
View File

@ -9,7 +9,7 @@ use self::beacon_block::BeaconBlockServiceInstance;
use self::beacon_node::BeaconNodeServiceInstance;
use self::validator::ValidatorServiceInstance;
use beacon_chain::{BeaconChain, BeaconChainTypes};
pub use config::Config as RPCConfig;
pub use config::Config;
use futures::Future;
use grpcio::{Environment, ServerBuilder};
use network::NetworkMessage;
@ -17,19 +17,18 @@ use protos::services_grpc::{
create_attestation_service, create_beacon_block_service, create_beacon_node_service,
create_validator_service,
};
use slog::{info, o, warn};
use slog::{info, warn};
use std::sync::Arc;
use tokio::runtime::TaskExecutor;
use tokio::sync::mpsc;
pub fn start_server<T: BeaconChainTypes + Clone + 'static>(
config: &RPCConfig,
pub fn start_server<T: BeaconChainTypes>(
config: &Config,
executor: &TaskExecutor,
network_chan: mpsc::UnboundedSender<NetworkMessage>,
beacon_chain: Arc<BeaconChain<T>>,
log: &slog::Logger,
log: slog::Logger,
) -> exit_future::Signal {
let log = log.new(o!("Service"=>"RPC"));
let env = Arc::new(Environment::new(1));
// build a channel to kill the rpc server

11
beacon_node/rpc/src/validator.rs
View File

@ -9,12 +9,21 @@ use ssz::Decode;
use std::sync::Arc;
use types::{Epoch, EthSpec, RelativeEpoch};
#[derive(Clone)]
pub struct ValidatorServiceInstance<T: BeaconChainTypes> {
pub chain: Arc<BeaconChain<T>>,
pub log: slog::Logger,
}
// NOTE: Deriving Clone puts bogus bounds on T, so we implement it manually.
impl<T: BeaconChainTypes> Clone for ValidatorServiceInstance<T> {
fn clone(&self) -> Self {
Self {
chain: self.chain.clone(),
log: self.log.clone(),
}
}
}
impl<T: BeaconChainTypes> ValidatorService for ValidatorServiceInstance<T> {
/// For a list of validator public keys, this function returns the slot at which each
/// validator must propose a block, attest to a shard, their shard committee and the shard they

157
beacon_node/src/main.rs → beacon_node/src/cli.rs
View File

@ -1,22 +1,9 @@
mod config;
mod run;
use clap::{App, Arg, SubCommand};
use config::get_configs;
use env_logger::{Builder, Env};
use slog::{crit, o, warn, Drain, Level};
pub const DEFAULT_DATA_DIR: &str = ".lighthouse";
pub const CLIENT_CONFIG_FILENAME: &str = "beacon-node.toml";
pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
pub const TESTNET_CONFIG_FILENAME: &str = "testnet.toml";
fn main() {
// debugging output for libp2p and external crates
Builder::from_env(Env::default()).init();
let matches = App::new("Lighthouse")
.version(version::version().as_str())
pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
App::new("Beacon Node")
.visible_aliases(&["b", "bn", "beacon", "beacon_node"])
.version(crate_version!())
.author("Sigma Prime <contact@sigmaprime.io>")
.about("Eth 2.0 Client")
/*
@ -30,13 +17,6 @@ fn main() {
.takes_value(true)
.global(true)
)
.arg(
Arg::with_name("logfile")
.long("logfile")
.value_name("FILE")
.help("File path where output will be written.")
.takes_value(true),
)
.arg(
Arg::with_name("network-dir")
.long("network-dir")
@ -197,35 +177,44 @@ fn main() {
* Eth1 Integration
*/
.arg(
Arg::with_name("eth1-server")
.long("eth1-server")
.value_name("SERVER")
Arg::with_name("dummy-eth1")
.long("dummy-eth1")
.help("If present, uses an eth1 backend that generates static dummy data.\
Identical to the method used at the 2019 Canada interop.")
)
.arg(
Arg::with_name("eth1-endpoint")
.long("eth1-endpoint")
.value_name("HTTP-ENDPOINT")
.help("Specifies the server for a web3 connection to the Eth1 chain.")
.takes_value(true)
.default_value("http://localhost:8545")
)
/*
* Database parameters.
*/
.arg(
Arg::with_name("db")
.long("db")
.value_name("DB")
.help("Type of database to use.")
Arg::with_name("eth1-follow")
.long("eth1-follow")
.value_name("BLOCK_COUNT")
.help("Specifies how many blocks we should cache behind the eth1 head. A larger number means a smaller cache.")
.takes_value(true)
.possible_values(&["disk", "memory"])
.default_value("disk"),
// TODO: set this higher once we're not using testnets all the time.
.default_value("0")
)
/*
* Logging.
*/
.arg(
Arg::with_name("debug-level")
.long("debug-level")
.value_name("LEVEL")
.help("The title of the spec constants for chain config.")
Arg::with_name("deposit-contract")
.long("deposit-contract")
.short("e")
.value_name("DEPOSIT-CONTRACT")
.help("Specifies the deposit contract address on the Eth1 chain.")
.takes_value(true)
.possible_values(&["info", "debug", "trace", "warn", "error", "crit"])
.default_value("trace"),
)
.arg(
Arg::with_name("deposit-contract-deploy")
.long("deposit-contract-deploy")
.value_name("BLOCK_NUMBER")
.help("Specifies the block number that the deposit contract was deployed at.")
.takes_value(true)
// TODO: set this higher once we're not using testnets all the time.
.default_value("0")
)
/*
* The "testnet" sub-command.
@ -234,17 +223,6 @@ fn main() {
*/
.subcommand(SubCommand::with_name("testnet")
.about("Create a new Lighthouse datadir using a testnet strategy.")
.arg(
Arg::with_name("spec")
.short("s")
.long("spec")
.value_name("TITLE")
.help("Specifies the default eth2 spec type. Only effective when creating a new datadir.")
.takes_value(true)
.required(true)
.possible_values(&["mainnet", "minimal", "interop"])
.default_value("minimal")
)
.arg(
Arg::with_name("eth2-config")
.long("eth2-config")
@ -347,68 +325,25 @@ fn main() {
* Start a new node, using a genesis state loaded from a YAML file
*/
.subcommand(SubCommand::with_name("file")
.about("Creates a new datadir where the genesis state is read from YAML. May fail to parse \
.about("Creates a new datadir where the genesis state is read from file. May fail to parse \
a file that was generated to a different spec than that specified by --spec.")
.arg(Arg::with_name("format")
.value_name("FORMAT")
.required(true)
.possible_values(&["yaml", "ssz", "json"])
.possible_values(&["ssz"])
.help("The encoding of the state in the file."))
.arg(Arg::with_name("file")
.value_name("YAML_FILE")
.value_name("FILE")
.required(true)
.help("A YAML file from which to read the state"))
.help("A file from which to read the state"))
)
/*
* `prysm`
*
* Connect to the Prysmatic Labs testnet.
*/
.subcommand(SubCommand::with_name("prysm")
.about("Connect to the Prysmatic Labs testnet on Goerli.")
)
)
.get_matches();
// build the initial logger
let decorator = slog_term::TermDecorator::new().build();
let decorator = logging::AlignedTermDecorator::new(decorator, logging::MAX_MESSAGE_WIDTH);
let drain = slog_term::FullFormat::new(decorator).build().fuse();
let drain = slog_async::Async::new(drain).build();
let drain = match matches.value_of("debug-level") {
Some("info") => drain.filter_level(Level::Info),
Some("debug") => drain.filter_level(Level::Debug),
Some("trace") => drain.filter_level(Level::Trace),
Some("warn") => drain.filter_level(Level::Warning),
Some("error") => drain.filter_level(Level::Error),
Some("crit") => drain.filter_level(Level::Critical),
_ => unreachable!("guarded by clap"),
};
let log = slog::Logger::root(drain.fuse(), o!());
if std::mem::size_of::<usize>() != 8 {
crit!(
log,
"Lighthouse only supports 64bit CPUs";
"detected" => format!("{}bit", std::mem::size_of::<usize>() * 8)
);
}
warn!(
log,
"Ethereum 2.0 is pre-release. This software is experimental."
);
let log_clone = log.clone();
// Load the process-wide configuration.
//
// May load this from disk or create a new configuration, depending on the CLI flags supplied.
let (client_config, eth2_config, log) = match get_configs(&matches, log) {
Ok(configs) => configs,
Err(e) => {
crit!(log_clone, "Failed to load configuration. Exiting"; "error" => e);
return;
}
};
// Start the node using a `tokio` executor.
match run::run_beacon_node(client_config, eth2_config, &log) {
Ok(_) => {}
Err(e) => crit!(log, "Beacon node failed to start"; "reason" => format!("{:}", e)),
}
}

109
beacon_node/src/config.rs
View File

@ -1,12 +1,14 @@
use clap::ArgMatches;
use client::{BeaconChainStartMethod, ClientConfig, Eth1BackendMethod, Eth2Config};
use client::{ClientConfig, ClientGenesis, Eth2Config};
use eth2_config::{read_from_file, write_to_file};
use genesis::recent_genesis_time;
use lighthouse_bootstrap::Bootstrapper;
use rand::{distributions::Alphanumeric, Rng};
use slog::{crit, info, warn, Logger};
use std::fs;
use std::net::Ipv4Addr;
use std::path::{Path, PathBuf};
use types::{Address, Epoch, Fork};
pub const DEFAULT_DATA_DIR: &str = ".lighthouse";
pub const CLIENT_CONFIG_FILENAME: &str = "beacon-node.toml";
@ -27,12 +29,33 @@ pub fn get_configs(cli_args: &ArgMatches, core_log: Logger) -> Result<Config> {
let mut builder = ConfigBuilder::new(cli_args, core_log)?;
if let Some(server) = cli_args.value_of("eth1-server") {
builder.set_eth1_backend_method(Eth1BackendMethod::Web3 {
server: server.into(),
})
} else {
builder.set_eth1_backend_method(Eth1BackendMethod::Interop)
if cli_args.is_present("dummy-eth1") {
builder.client_config.dummy_eth1_backend = true;
}
if let Some(val) = cli_args.value_of("eth1-endpoint") {
builder.set_eth1_endpoint(val)
}
if let Some(val) = cli_args.value_of("deposit-contract") {
builder.set_deposit_contract(
val.parse::<Address>()
.map_err(|e| format!("Unable to parse deposit-contract address: {:?}", e))?,
)
}
if let Some(val) = cli_args.value_of("deposit-contract-deploy") {
builder.set_deposit_contract_deploy_block(
val.parse::<u64>()
.map_err(|e| format!("Unable to parse deposit-contract-deploy: {:?}", e))?,
)
}
if let Some(val) = cli_args.value_of("eth1-follow") {
builder.set_eth1_follow(
val.parse::<u64>()
.map_err(|e| format!("Unable to parse follow distance: {:?}", e))?,
)
}
match cli_args.subcommand() {
@ -49,7 +72,7 @@ pub fn get_configs(cli_args: &ArgMatches, core_log: Logger) -> Result<Config> {
// If no primary subcommand was given, start the beacon chain from an existing
// database.
builder.set_beacon_chain_start_method(BeaconChainStartMethod::Resume);
builder.set_genesis(ClientGenesis::Resume);
// Whilst there is no large testnet or mainnet force the user to specify how they want
// to start a new chain (e.g., from a genesis YAML file, another node, etc).
@ -142,7 +165,7 @@ fn process_testnet_subcommand(
builder.import_bootstrap_enr_address(server)?;
builder.import_bootstrap_eth2_config(server)?;
builder.set_beacon_chain_start_method(BeaconChainStartMethod::HttpBootstrap {
builder.set_genesis(ClientGenesis::RemoteNode {
server: server.to_string(),
port,
})
@ -160,9 +183,11 @@ fn process_testnet_subcommand(
.parse::<u64>()
.map_err(|e| format!("Unable to parse minutes: {:?}", e))?;
builder.set_beacon_chain_start_method(BeaconChainStartMethod::RecentGenesis {
builder.client_config.dummy_eth1_backend = true;
builder.set_genesis(ClientGenesis::Interop {
validator_count,
minutes,
genesis_time: recent_genesis_time(minutes),
})
}
("quick", Some(cli_args)) => {
@ -178,13 +203,15 @@ fn process_testnet_subcommand(
.parse::<u64>()
.map_err(|e| format!("Unable to parse genesis time: {:?}", e))?;
builder.set_beacon_chain_start_method(BeaconChainStartMethod::Generated {
builder.client_config.dummy_eth1_backend = true;
builder.set_genesis(ClientGenesis::Interop {
validator_count,
genesis_time,
})
}
("file", Some(cli_args)) => {
let file = cli_args
let path = cli_args
.value_of("file")
.ok_or_else(|| "No filename specified")?
.parse::<PathBuf>()
@ -195,13 +222,34 @@ fn process_testnet_subcommand(
.ok_or_else(|| "No file format specified")?;
let start_method = match format {
"yaml" => BeaconChainStartMethod::Yaml { file },
"ssz" => BeaconChainStartMethod::Ssz { file },
"json" => BeaconChainStartMethod::Json { file },
"ssz" => ClientGenesis::SszFile { path },
other => return Err(format!("Unknown genesis file format: {}", other)),
};
builder.set_beacon_chain_start_method(start_method)
builder.set_genesis(start_method)
}
("prysm", Some(_)) => {
let mut spec = &mut builder.eth2_config.spec;
let mut client_config = &mut builder.client_config;
spec.min_deposit_amount = 100;
spec.max_effective_balance = 3_200_000_000;
spec.ejection_balance = 1_600_000_000;
spec.effective_balance_increment = 100_000_000;
spec.min_genesis_time = 0;
spec.genesis_fork = Fork {
previous_version: [0; 4],
current_version: [0, 0, 0, 2],
epoch: Epoch::new(0),
};
client_config.eth1.deposit_contract_address =
"0x802dF6aAaCe28B2EEb1656bb18dF430dDC42cc2e".to_string();
client_config.eth1.deposit_contract_deploy_block = 1487270;
client_config.eth1.follow_distance = 16;
client_config.dummy_eth1_backend = false;
builder.set_genesis(ClientGenesis::DepositContract)
}
(cmd, Some(_)) => {
return Err(format!(
@ -220,8 +268,8 @@ fn process_testnet_subcommand(
/// Allows for building a set of configurations based upon `clap` arguments.
struct ConfigBuilder {
log: Logger,
eth2_config: Eth2Config,
client_config: ClientConfig,
pub eth2_config: Eth2Config,
pub client_config: ClientConfig,
}
impl ConfigBuilder {
@ -294,14 +342,24 @@ impl ConfigBuilder {
Ok(())
}
/// Sets the method for starting the beacon chain.
pub fn set_beacon_chain_start_method(&mut self, method: BeaconChainStartMethod) {
self.client_config.beacon_chain_start_method = method;
pub fn set_eth1_endpoint(&mut self, endpoint: &str) {
self.client_config.eth1.endpoint = endpoint.to_string();
}
/// Sets the method for starting the beacon chain.
pub fn set_eth1_backend_method(&mut self, method: Eth1BackendMethod) {
self.client_config.eth1_backend_method = method;
pub fn set_deposit_contract(&mut self, deposit_contract: Address) {
self.client_config.eth1.deposit_contract_address = format!("{:?}", deposit_contract);
}
pub fn set_deposit_contract_deploy_block(&mut self, eth1_block_number: u64) {
self.client_config.eth1.deposit_contract_deploy_block = eth1_block_number;
}
pub fn set_eth1_follow(&mut self, distance: u64) {
self.client_config.eth1.follow_distance = distance;
}
pub fn set_genesis(&mut self, method: ClientGenesis) {
self.client_config.genesis = method;
}
/// Import the libp2p address for `server` into the list of libp2p nodes to connect with.
@ -540,7 +598,6 @@ impl ConfigBuilder {
/// The supplied `cli_args` should be the base-level `clap` cli_args (i.e., not a subcommand
/// cli_args).
pub fn build(mut self, cli_args: &ArgMatches) -> Result<Config> {
self.eth2_config.apply_cli_args(cli_args)?;
self.client_config.apply_cli_args(cli_args, &mut self.log)?;
if let Some(bump) = cli_args.value_of("port-bump") {

153
beacon_node/src/lib.rs Normal file
View File

@ -0,0 +1,153 @@
#[macro_use]
extern crate clap;
mod cli;
mod config;
pub use beacon_chain;
pub use cli::cli_app;
pub use client::{Client, ClientBuilder, ClientConfig, ClientGenesis};
pub use eth2_config::Eth2Config;
use beacon_chain::{
builder::Witness, eth1_chain::CachingEth1Backend, events::WebSocketSender,
lmd_ghost::ThreadSafeReducedTree, slot_clock::SystemTimeSlotClock,
};
use clap::ArgMatches;
use config::get_configs;
use environment::RuntimeContext;
use futures::{Future, IntoFuture};
use slog::{info, warn};
use std::ops::{Deref, DerefMut};
use store::DiskStore;
use types::EthSpec;
/// A type-alias to the tighten the definition of a production-intended `Client`.
pub type ProductionClient<E> = Client<
Witness<
DiskStore,
SystemTimeSlotClock,
ThreadSafeReducedTree<DiskStore, E>,
CachingEth1Backend<E, DiskStore>,
E,
WebSocketSender<E>,
>,
>;
/// The beacon node `Client` that will be used in production.
///
/// Generic over some `EthSpec`.
///
/// ## Notes:
///
/// Despite being titled `Production...`, this code is not ready for production. The name
/// demonstrates an intention, not a promise.
pub struct ProductionBeaconNode<E: EthSpec>(ProductionClient<E>);
impl<E: EthSpec> ProductionBeaconNode<E> {
/// Starts a new beacon node `Client` in the given `environment`.
///
/// Identical to `start_from_client_config`, however the `client_config` is generated from the
/// given `matches` and potentially configuration files on the local filesystem or other
/// configurations hosted remotely.
pub fn new_from_cli<'a, 'b>(
mut context: RuntimeContext<E>,
matches: &ArgMatches<'b>,
) -> impl Future<Item = Self, Error = String> + 'a {
let log = context.log.clone();
// TODO: the eth2 config in the env is being completely ignored.
//
// See https://github.com/sigp/lighthouse/issues/602
get_configs(&matches, log).into_future().and_then(
move |(client_config, eth2_config, _log)| {
context.eth2_config = eth2_config;
Self::new(context, client_config)
},
)
}
/// Starts a new beacon node `Client` in the given `environment`.
///
/// Client behaviour is defined by the given `client_config`.
pub fn new(
context: RuntimeContext<E>,
client_config: ClientConfig,
) -> impl Future<Item = Self, Error = String> {
let http_eth2_config = context.eth2_config().clone();
let spec = context.eth2_config().spec.clone();
let genesis_eth1_config = client_config.eth1.clone();
let client_genesis = client_config.genesis.clone();
let log = context.log.clone();
client_config
.db_path()
.ok_or_else(|| "Unable to access database path".to_string())
.into_future()
.and_then(move |db_path| {
Ok(ClientBuilder::new(context.eth_spec_instance.clone())
.runtime_context(context)
.disk_store(&db_path)?
.chain_spec(spec))
})
.and_then(move |builder| {
builder.beacon_chain_builder(client_genesis, genesis_eth1_config)
})
.and_then(move |builder| {
let builder = if client_config.sync_eth1_chain && !client_config.dummy_eth1_backend
{
info!(
log,
"Block production enabled";
"endpoint" => &client_config.eth1.endpoint,
"method" => "json rpc via http"
);
builder.caching_eth1_backend(client_config.eth1.clone())?
} else if client_config.dummy_eth1_backend {
warn!(
log,
"Block production impaired";
"reason" => "dummy eth1 backend is enabled"
);
builder.dummy_eth1_backend()?
} else {
info!(
log,
"Block production disabled";
"reason" => "no eth1 backend configured"
);
builder.no_eth1_backend()?
};
let builder = builder
.system_time_slot_clock()?
.websocket_event_handler(client_config.websocket_server.clone())?
.build_beacon_chain()?
.libp2p_network(&client_config.network)?
.http_server(&client_config, &http_eth2_config)?
.grpc_server(&client_config.rpc)?
.peer_count_notifier()?
.slot_notifier()?;
Ok(Self(builder.build()))
})
}
pub fn into_inner(self) -> ProductionClient<E> {
self.0
}
}
impl<E: EthSpec> Deref for ProductionBeaconNode<E> {
type Target = ProductionClient<E>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl<E: EthSpec> DerefMut for ProductionBeaconNode<E> {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}

138
beacon_node/src/run.rs
View File

@ -1,138 +0,0 @@
use client::{error, notifier, Client, ClientConfig, Eth1BackendMethod, Eth2Config};
use futures::sync::oneshot;
use futures::Future;
use slog::{error, info};
use std::cell::RefCell;
use std::path::Path;
use std::path::PathBuf;
use store::Store;
use store::{DiskStore, MemoryStore};
use tokio::runtime::Builder;
use tokio::runtime::Runtime;
use tokio::runtime::TaskExecutor;
use tokio_timer::clock::Clock;
use types::{EthSpec, InteropEthSpec, MainnetEthSpec, MinimalEthSpec};
/// Reads the configuration and initializes a `BeaconChain` with the required types and parameters.
///
/// Spawns an executor which performs syncing, networking, block production, etc.
///
/// Blocks the current thread, returning after the `BeaconChain` has exited or a `Ctrl+C`
/// signal.
pub fn run_beacon_node(
client_config: ClientConfig,
eth2_config: Eth2Config,
log: &slog::Logger,
) -> error::Result<()> {
let runtime = Builder::new()
.name_prefix("main-")
.clock(Clock::system())
.build()
.map_err(|e| format!("{:?}", e))?;
let executor = runtime.executor();
let db_path: PathBuf = client_config
.db_path()
.ok_or_else::<error::Error, _>(|| "Unable to access database path".into())?;
let db_type = &client_config.db_type;
let spec_constants = eth2_config.spec_constants.clone();
let other_client_config = client_config.clone();
info!(
log,
"Starting beacon node";
"p2p_listen_address" => format!("{}", &other_client_config.network.listen_address),
"db_type" => &other_client_config.db_type,
"spec_constants" => &spec_constants,
);
macro_rules! run_client {
($store: ty, $eth_spec: ty) => {
run::<$store, $eth_spec>(&db_path, client_config, eth2_config, executor, runtime, log)
};
}
if let Eth1BackendMethod::Web3 { .. } = client_config.eth1_backend_method {
return Err("Starting from web3 backend is not supported for interop.".into());
}
match (db_type.as_str(), spec_constants.as_str()) {
("disk", "minimal") => run_client!(DiskStore, MinimalEthSpec),
("disk", "mainnet") => run_client!(DiskStore, MainnetEthSpec),
("disk", "interop") => run_client!(DiskStore, InteropEthSpec),
("memory", "minimal") => run_client!(MemoryStore, MinimalEthSpec),
("memory", "mainnet") => run_client!(MemoryStore, MainnetEthSpec),
("memory", "interop") => run_client!(MemoryStore, InteropEthSpec),
(db_type, spec) => {
error!(log, "Unknown runtime configuration"; "spec_constants" => spec, "db_type" => db_type);
Err("Unknown specification and/or db_type.".into())
}
}
}
/// Performs the type-generic parts of launching a `BeaconChain`.
fn run<S, E>(
db_path: &Path,
client_config: ClientConfig,
eth2_config: Eth2Config,
executor: TaskExecutor,
mut runtime: Runtime,
log: &slog::Logger,
) -> error::Result<()>
where
S: Store + Clone + 'static + OpenDatabase,
E: EthSpec,
{
let store = S::open_database(&db_path)?;
let client: Client<S, E> =
Client::new(client_config, eth2_config, store, log.clone(), &executor)?;
// run service until ctrl-c
let (ctrlc_send, ctrlc_oneshot) = oneshot::channel();
let ctrlc_send_c = RefCell::new(Some(ctrlc_send));
ctrlc::set_handler(move || {
if let Some(ctrlc_send) = ctrlc_send_c.try_borrow_mut().unwrap().take() {
ctrlc_send.send(()).expect("Error sending ctrl-c message");
}
})
.map_err(|e| format!("Could not set ctrlc handler: {:?}", e))?;
let (exit_signal, exit) = exit_future::signal();
notifier::run(&client, executor, exit);
runtime
.block_on(ctrlc_oneshot)
.map_err(|e| format!("Ctrlc oneshot failed: {:?}", e))?;
// perform global shutdown operations.
info!(log, "Shutting down..");
exit_signal.fire();
// shutdown the client
// client.exit_signal.fire();
drop(client);
runtime.shutdown_on_idle().wait().unwrap();
Ok(())
}
/// A convenience trait, providing a method to open a database.
///
/// Panics if unable to open the database.
pub trait OpenDatabase: Sized {
fn open_database(path: &Path) -> error::Result<Self>;
}
impl OpenDatabase for MemoryStore {
fn open_database(_path: &Path) -> error::Result<Self> {
Ok(MemoryStore::open())
}
}
impl OpenDatabase for DiskStore {
fn open_database(path: &Path) -> error::Result<Self> {
DiskStore::open(path).map_err(|e| format!("Unable to open database: {:?}", e).into())
}
}

40
beacon_node/tests/test.rs Normal file
View File

@ -0,0 +1,40 @@
#![cfg(test)]
use node_test_rig::{environment::EnvironmentBuilder, LocalBeaconNode};
use types::{MinimalEthSpec, Slot};
fn env_builder() -> EnvironmentBuilder<MinimalEthSpec> {
EnvironmentBuilder::minimal()
}
#[test]
fn http_server_genesis_state() {
let mut env = env_builder()
.null_logger()
.expect("should build env logger")
.multi_threaded_tokio_runtime()
.expect("should start tokio runtime")
.build()
.expect("environment should build");
let node = LocalBeaconNode::production(env.core_context());
let remote_node = node.remote_node().expect("should produce remote node");
let (api_state, _root) = env
.runtime()
.block_on(remote_node.http.beacon().state_at_slot(Slot::new(0)))
.expect("should fetch state from http api");
let mut db_state = node
.client
.beacon_chain()
.expect("client should have beacon chain")
.state_at_slot(Slot::new(0))
.expect("should find state");
db_state.drop_all_caches();
assert_eq!(
api_state, db_state,
"genesis state from api should match that from the DB"
);
}

1
beacon_node/websocket_server/Cargo.toml
View File

@ -7,7 +7,6 @@ edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
beacon_chain = { path = "../beacon_chain" }
clap = "2.33.0"
exit-future = "0.1.4"
futures = "0.1.29"

45
beacon_node/websocket_server/src/lib.rs
View File

@ -1,7 +1,7 @@
use beacon_chain::events::{EventHandler, EventKind};
use futures::Future;
use slog::{debug, error, info, warn, Logger};
use std::marker::PhantomData;
use std::net::SocketAddr;
use std::thread;
use tokio::runtime::TaskExecutor;
use types::EthSpec;
@ -36,31 +36,30 @@ impl<T: EthSpec> WebSocketSender<T> {
}
}
impl<T: EthSpec> EventHandler<T> for WebSocketSender<T> {
fn register(&self, kind: EventKind<T>) -> Result<(), String> {
self.send_string(
serde_json::to_string(&kind)
.map_err(|e| format!("Unable to serialize event: {:?}", e))?,
)
}
}
pub fn start_server<T: EthSpec>(
config: &Config,
executor: &TaskExecutor,
log: &Logger,
) -> Result<(WebSocketSender<T>, exit_future::Signal), String> {
) -> Result<(WebSocketSender<T>, exit_future::Signal, SocketAddr), String> {
let server_string = format!("{}:{}", config.listen_address, config.port);
info!(
log,
"Websocket server starting";
"listen_address" => &server_string
);
// Create a server that simply ignores any incoming messages.
let server = WebSocket::new(|_| |_| Ok(()))
.map_err(|e| format!("Failed to initialize websocket server: {:?}", e))?;
.map_err(|e| format!("Failed to initialize websocket server: {:?}", e))?
.bind(server_string.clone())
.map_err(|e| {
format!(
"Failed to bind websocket server to {}: {:?}",
server_string, e
)
})?;
let actual_listen_addr = server.local_addr().map_err(|e| {
format!(
"Failed to read listening addr from websocket server: {:?}",
e
)
})?;
let broadcaster = server.broadcaster();
@ -91,7 +90,7 @@ pub fn start_server<T: EthSpec>(
};
let log_inner = log.clone();
let _handle = thread::spawn(move || match server.listen(server_string) {
let _handle = thread::spawn(move || match server.run() {
Ok(_) => {
debug!(
log_inner,
@ -107,11 +106,19 @@ pub fn start_server<T: EthSpec>(
}
});
info!(
log,
"WebSocket server started";
"address" => format!("{}", actual_listen_addr.ip()),
"port" => actual_listen_addr.port(),
);
Ok((
WebSocketSender {
sender: Some(broadcaster),
_phantom: PhantomData,
},
exit_signal,
actual_listen_addr,
))
}

57
book/src/cli.md
View File

@ -1,24 +1,32 @@
# Command-Line Interface (CLI)
Lighthouse a collection of CLI applications. The two primary binaries are:
The `lighthouse` binary provides all necessary Ethereum 2.0 functionality. It
has two primary sub-commands:
- `beacon_node`: the largest and most fundamental component which connects to
- `$ lighthouse beacon_node`: the largest and most fundamental component which connects to
the p2p network, processes messages and tracks the head of the beacon
chain.
- `validator_client`: a lightweight but important component which loads a validators private
- `$ lighthouse validator_client`: a lightweight but important component which loads a validators private
key and signs messages using a `beacon_node` as a source-of-truth.
There are also some ancillary binaries:
There are also some ancillary binaries like `lcli` and `account_manager`, but
these are primarily for testing.
- `account_manager`: generates cryptographic keys.
- `lcli`: a general-purpose utility for troubleshooting Lighthouse state
transitions (developer tool).
> **Note:** documentation sometimes uses `$ lighthouse bn` and `$ lighthouse
> vc` instead of the long-form `beacon_node` and `validator_client`. These
> commands are valid on the CLI too.
## Installation
Presently, we recommend building Lighthouse using the `$ cargo build --release
--all` command and executing binaries from the
`<lighthouse-repository>/target/release` directory.
Typical users may install `lighthouse` to `CARGO_HOME` with `cargo install
--path lighthouse` from the root of the repository. See ["Configuring the
`PATH` environment variable"](https://www.rust-lang.org/tools/install) for more
information.
For develeopers, we recommend building Lighthouse using the `$ cargo build --release
--bin lighthouse` command and executing binaries from the
`<lighthouse-repository>/target/release` directory. This is more ergonomic when
modifying and rebuilding regularly.
## Documentation
@ -27,36 +35,29 @@ documentation.
```bash
$ ./beacon_node --help
$ lighthouse beacon_node --help
```
```bash
$ ./validator_client --help
```
```bash
$ ./account_manager --help
```
```bash
$ ./lcli --help
$ lighthouse validator_client --help
```
## Beacon Node
The `beacon_node` CLI has two primary tasks:
The `$ lighthouse beacon_node` (or `$ lighthouse bn`) command has two primary
tasks:
- **Resuming** an existing database with `$ ./beacon_node`.
- **Creating** a new testnet database using `$ ./beacon_node testnet`.
- **Resuming** an existing database with `$ lighthouse bn`.
- **Creating** a new testnet database using `$ lighthouse bn testnet`.
## Creating a new database
Use the `$./beacon_node testnet` command (see [testnets](./testnets.md) for more
information).
Use the `$ lighthouse bn testnet` command (see [testnets](./testnets.md) for
more information).
## Resuming from an existing database
Once a database has been created, it can be resumed by running `$ ./beacon_node`.
Once a database has been created, it can be resumed by running `$ lighthouse bn`.
Presently, this command will fail if no existing database is found. You must
use the `$ ./beacon_node testnet` command to create a new database.
Presently, you are not allowed to call `$ lighthouse bn` unless you have first
created a database using `$ lighthouse bn testnet`.

12
book/src/setup.md
View File

@ -19,6 +19,18 @@
> `target/release` directory.
> - First-time compilation may take several minutes.
### Installing to `PATH`
Use `cargo install --path lighthouse` from the root of the repository to
install the compiled binary to `CARGO_HOME` or `$HOME/.cargo`. If this
directory is on your `PATH`, you can run `$ lighthouse ..` from anywhere.
See ["Configuring the `PATH` environment
variable" (rust-lang.org)](https://www.rust-lang.org/tools/install) for more information.
> If you _don't_ install `lighthouse` to the path, you'll need to run the
> binaries directly from the `target` directory or using `cargo run ...`.
### Windows
Perl may also be required to build Lighthouse. You can install [Strawberry

18
book/src/simple-testnet.md
View File

@ -3,9 +3,9 @@
With a functional [development environment](./setup.md), starting a local multi-node
testnet is easy:
1. Start the first node: `$ ./beacon_node testnet -f recent 8`
1. Start a validator client: `$ ./validator_client testnet -b insecure 0 8`
1. Start more nodes with `$ ./beacon_node -b 10 testnet -f bootstrap
1. Start the first node: `$ lighthouse bn testnet -f recent 8`
1. Start a validator client: `$ lighthouse bn testnet -b insecure 0 8`
1. Start more nodes with `$ lighthouse bn -b 10 testnet -f bootstrap
http://localhost:5052`
- Increment the `-b` value by `10` for each additional node.
@ -16,10 +16,10 @@ First, setup a Lighthouse development environment and navigate to the
## Starting a beacon node
Start a new node (creating a fresh database and configuration in `~/.lighthouse`), using:
Start a new node (creating a fresh database and configuration in `$HOME/.lighthouse`), using:
```bash
$ ./beacon_node testnet -f recent 8
$ lighthouse bn testnet -f recent 8
```
> Notes:
@ -27,7 +27,7 @@ $ ./beacon_node testnet -f recent 8
> - The `-f` flag ignores any existing database or configuration, backing them
> up before re-initializing.
> - `8` is number of validators with deposits in the genesis state.
> - See `$ ./beacon_node testnet recent --help` for more configuration options,
> - See `$ lighthouse bn testnet recent --help` for more configuration options,
> including `minimal`/`mainnet` specification.
## Starting a validator client
@ -35,7 +35,7 @@ $ ./beacon_node testnet -f recent 8
In a new terminal window, start the validator client with:
```bash
$ ./validator_client testnet -b insecure 0 8
$ lighthouse bn testnet -b insecure 0 8
```
> Notes:
@ -58,7 +58,7 @@ In a new terminal window, run:
```bash
$ ./beacon_node -b 10 testnet -r bootstrap
$ lighthouse bn -b 10 testnet -r bootstrap
```
> Notes:
@ -70,4 +70,4 @@ $ ./beacon_node -b 10 testnet -r bootstrap
> (avoids data directory collisions between nodes).
> - The default bootstrap HTTP address is `http://localhost:5052`. The new node
> will download configuration via HTTP before starting sync via libp2p.
> - See `$ ./beacon_node testnet bootstrap --help` for more configuration.
> - See `$ lighthouse bn testnet bootstrap --help` for more configuration.

26
book/src/testnets.md
View File

@ -1,16 +1,16 @@
# Testnets
The Lighthouse CLI has a `testnet` sub-command to allow creating or connecting
to Eth2 beacon chain testnets.
The `beacon_node` and `validator` commands have a `testnet` sub-command to
allow creating or connecting to Eth2 beacon chain testnets.
For detailed documentation, use the `--help` flag on the CLI:
```bash
$ ./beacon_node testnet --help
$ lighthouse bn testnet --help
```
```bash
$ ./validator_client testnet --help
$ lighthouse vc testnet --help
```
## Examples
@ -25,7 +25,7 @@ commands are based in the `target/release` directory (this is the build dir for
To start a brand-new beacon node (with no history) use:
```bash
$ ./beacon_node testnet -f quick 8 <GENESIS_TIME>
$ lighthouse bn testnet -f quick 8 <GENESIS_TIME>
```
Where `GENESIS_TIME` is in [unix time](https://duckduckgo.com/?q=unix+time&t=ffab&ia=answer).
@ -38,7 +38,7 @@ method in the `ethereum/eth2.0-pm` repository.
> - The `-f` flag ignores any existing database or configuration, backing them
> up before re-initializing.
> - `8` is the validator count and `1567222226` is the genesis time.
> - See `$ ./beacon_node testnet quick --help` for more configuration options.
> - See `$ lighthouse bn testnet quick --help` for more configuration options.
### Start a beacon node given a genesis state file
@ -52,14 +52,14 @@ There are three supported formats:
Start a new node using `/tmp/genesis.ssz` as the genesis state:
```bash
$ ./beacon_node testnet --spec minimal -f file ssz /tmp/genesis.ssz
$ lighthouse bn testnet --spec minimal -f file ssz /tmp/genesis.ssz
```
> Notes:
>
> - The `-f` flag ignores any existing database or configuration, backing them
> up before re-initializing.
> - See `$ ./beacon_node testnet file --help` for more configuration options.
> - See `$ lighthouse bn testnet file --help` for more configuration options.
> - The `--spec` flag is required to allow SSZ parsing of fixed-length lists.
> Here the `minimal` eth2 specification is chosen, allowing for lower
> validator counts. See
@ -71,7 +71,7 @@ $ ./beacon_node testnet --spec minimal -f file ssz /tmp/genesis.ssz
To start a brand-new validator client (with no history) use:
```bash
$ ./validator_client testnet -b insecure 0 8
$ lighthouse vc testnet -b insecure 0 8
```
> Notes:
@ -113,7 +113,7 @@ the `--libp2p-addresses` command.
#### Example:
```bash
$ ./beacon_node --libp2p-addresses /ip4/192.168.0.1/tcp/9000
$ lighthouse bn --libp2p-addresses /ip4/192.168.0.1/tcp/9000
```
### Specify a boot node by ENR (Ethereum Name Record)
@ -124,7 +124,7 @@ the `--boot-nodes` command.
#### Example:
```bash
$ ./beacon_node --boot-nodes -IW4QB2Hi8TPuEzQ41Cdf1r2AUU1FFVFDBJdJyOkWk2qXpZfFZQy2YnJIyoT_5fnbtrXUouoskmydZl4pIg90clIkYUDgmlwhH8AAAGDdGNwgiMog3VkcIIjKIlzZWNwMjU2azGhAjg0-DsTkQynhJCRnLLttBK1RS78lmUkLa-wgzAi-Ob5
$ lighthouse bn --boot-nodes -IW4QB2Hi8TPuEzQ41Cdf1r2AUU1FFVFDBJdJyOkWk2qXpZfFZQy2YnJIyoT_5fnbtrXUouoskmydZl4pIg90clIkYUDgmlwhH8AAAGDdGNwgiMog3VkcIIjKIlzZWNwMjU2azGhAjg0-DsTkQynhJCRnLLttBK1RS78lmUkLa-wgzAi-Ob5
```
### Avoid port clashes when starting nodes
@ -138,7 +138,7 @@ ports by some `n`.
Increase all ports by `10` (using multiples of `10` is recommended).
```bash
$ ./beacon_node -b 10
$ lighthouse bn -b 10
```
### Start a testnet with a custom slot time
@ -151,7 +151,7 @@ Lighthouse can run at quite low slot times when there are few validators (e.g.,
The `-t` (`--slot-time`) flag specifies the milliseconds per slot.
```bash
$ ./beacon_node testnet -t 500 recent 8
$ lighthouse bn testnet -t 500 recent 8
```
> Note: `bootstrap` loads the slot time via HTTP and therefore conflicts with

9
eth2/lmd_ghost/tests/test.rs
View File

@ -5,7 +5,7 @@ extern crate lazy_static;
use beacon_chain::test_utils::{
generate_deterministic_keypairs, AttestationStrategy,
BeaconChainHarness as BaseBeaconChainHarness, BlockStrategy,
BeaconChainHarness as BaseBeaconChainHarness, BlockStrategy, HarnessType,
};
use lmd_ghost::{LmdGhost, ThreadSafeReducedTree as BaseThreadSafeReducedTree};
use rand::{prelude::*, rngs::StdRng};
@ -21,7 +21,7 @@ pub const VALIDATOR_COUNT: usize = 3 * 8;
type TestEthSpec = MinimalEthSpec;
type ThreadSafeReducedTree = BaseThreadSafeReducedTree<MemoryStore, TestEthSpec>;
type BeaconChainHarness = BaseBeaconChainHarness<ThreadSafeReducedTree, TestEthSpec>;
type BeaconChainHarness = BaseBeaconChainHarness<HarnessType<TestEthSpec>>;
type RootAndSlot = (Hash256, Slot);
lazy_static! {
@ -52,7 +52,10 @@ struct ForkedHarness {
impl ForkedHarness {
/// A new standard instance of with constant parameters.
pub fn new() -> Self {
let harness = BeaconChainHarness::new(generate_deterministic_keypairs(VALIDATOR_COUNT));
let harness = BeaconChainHarness::new(
MinimalEthSpec,
generate_deterministic_keypairs(VALIDATOR_COUNT),
);
// Move past the zero slot.
harness.advance_slot();

2
eth2/operation_pool/src/lib.rs
View File

@ -598,7 +598,7 @@ mod tests {
let mut state = BeaconState::random_for_test(rng);
state.fork = Fork::genesis(MainnetEthSpec::genesis_epoch());
state.fork = Fork::default();
(spec, state)
}

30
eth2/state_processing/src/genesis.rs
View File

@ -35,18 +35,7 @@ pub fn initialize_beacon_state_from_eth1<T: EthSpec>(
process_deposit(&mut state, &deposit, spec, true)?;
}
// Process activations
for (index, validator) in state.validators.iter_mut().enumerate() {
let balance = state.balances[index];
validator.effective_balance = std::cmp::min(
balance - balance % spec.effective_balance_increment,
spec.max_effective_balance,
);
if validator.effective_balance == spec.max_effective_balance {
validator.activation_eligibility_epoch = T::genesis_epoch();
validator.activation_epoch = T::genesis_epoch();
}
}
process_activations(&mut state, spec);
// Now that we have our validators, initialize the caches (including the committees)
state.build_all_caches(spec)?;
@ -71,3 +60,20 @@ pub fn is_valid_genesis_state<T: EthSpec>(state: &BeaconState<T>, spec: &ChainSp
&& state.get_active_validator_indices(T::genesis_epoch()).len() as u64
>= spec.min_genesis_active_validator_count
}
/// Activate genesis validators, if their balance is acceptable.
///
/// Spec v0.8.0
pub fn process_activations<T: EthSpec>(state: &mut BeaconState<T>, spec: &ChainSpec) {
for (index, validator) in state.validators.iter_mut().enumerate() {
let balance = state.balances[index];
validator.effective_balance = std::cmp::min(
balance - balance % spec.effective_balance_increment,
spec.max_effective_balance,
);
if validator.effective_balance == spec.max_effective_balance {
validator.activation_eligibility_epoch = T::genesis_epoch();
validator.activation_epoch = T::genesis_epoch();
}
}
}

2
eth2/state_processing/src/lib.rs
View File

@ -8,7 +8,7 @@ pub mod per_epoch_processing;
pub mod per_slot_processing;
pub mod test_utils;
pub use genesis::{initialize_beacon_state_from_eth1, is_valid_genesis_state};
pub use genesis::{initialize_beacon_state_from_eth1, is_valid_genesis_state, process_activations};
pub use per_block_processing::{
errors::BlockProcessingError, per_block_processing, BlockSignatureStrategy, VerifySignatures,
};

2
eth2/state_processing/src/per_block_processing.rs
View File

@ -444,7 +444,7 @@ pub fn process_deposit<T: EthSpec>(
} else {
// The signature should be checked for new validators. Return early for a bad
// signature.
if verify_deposit_signature(state, deposit, spec).is_err() {
if verify_deposit_signature(&deposit.data, spec).is_err() {
return Ok(());
}

22
eth2/state_processing/src/per_block_processing/signature_sets.rs
View File

@ -7,7 +7,7 @@ use std::convert::TryInto;
use tree_hash::{SignedRoot, TreeHash};
use types::{
AggregateSignature, AttestationDataAndCustodyBit, AttesterSlashing, BeaconBlock,
BeaconBlockHeader, BeaconState, BeaconStateError, ChainSpec, Deposit, Domain, EthSpec, Fork,
BeaconBlockHeader, BeaconState, BeaconStateError, ChainSpec, DepositData, Domain, EthSpec,
Hash256, IndexedAttestation, ProposerSlashing, PublicKey, RelativeEpoch, Signature, Transfer,
VoluntaryExit,
};
@ -194,18 +194,17 @@ pub fn attester_slashing_signature_sets<'a, T: EthSpec>(
///
/// This method is separate to `deposit_signature_set` to satisfy lifetime requirements.
pub fn deposit_pubkey_signature_message(
deposit: &Deposit,
deposit_data: &DepositData,
) -> Option<(PublicKey, Signature, Vec<u8>)> {
let pubkey = (&deposit.data.pubkey).try_into().ok()?;
let signature = (&deposit.data.signature).try_into().ok()?;
let message = deposit.data.signed_root();
let pubkey = (&deposit_data.pubkey).try_into().ok()?;
let signature = (&deposit_data.signature).try_into().ok()?;
let message = deposit_data.signed_root();
Some((pubkey, signature, message))
}
/// Returns the signature set for some set of deposit signatures, made with
/// `deposit_pubkey_signature_message`.
pub fn deposit_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
pub fn deposit_signature_set<'a>(
pubkey_signature_message: &'a (PublicKey, Signature, Vec<u8>),
spec: &'a ChainSpec,
) -> SignatureSet<'a> {
@ -213,9 +212,12 @@ pub fn deposit_signature_set<'a, T: EthSpec>(
// Note: Deposits are valid across forks, thus the deposit domain is computed
// with the fork zeroed.
let domain = spec.get_domain(state.current_epoch(), Domain::Deposit, &Fork::default());
SignatureSet::single(signature, pubkey, message.clone(), domain)
SignatureSet::single(
signature,
pubkey,
message.clone(),
spec.get_deposit_domain(),
)
}
/// Returns a signature set that is valid if the `VoluntaryExit` was signed by the indicated

10
eth2/state_processing/src/per_block_processing/verify_deposit.rs
View File

@ -15,16 +15,12 @@ fn error(reason: DepositInvalid) -> BlockOperationError<DepositInvalid> {
/// Verify `Deposit.pubkey` signed `Deposit.signature`.
///
/// Spec v0.8.0
pub fn verify_deposit_signature<T: EthSpec>(
state: &BeaconState<T>,
deposit: &Deposit,
spec: &ChainSpec,
) -> Result<()> {
let deposit_signature_message = deposit_pubkey_signature_message(deposit)
pub fn verify_deposit_signature(deposit_data: &DepositData, spec: &ChainSpec) -> Result<()> {
let deposit_signature_message = deposit_pubkey_signature_message(&deposit_data)
.ok_or_else(|| error(DepositInvalid::BadBlsBytes))?;
verify!(
deposit_signature_set(state, &deposit_signature_message, spec).is_valid(),
deposit_signature_set(&deposit_signature_message, spec).is_valid(),
DepositInvalid::BadSignature
);

2
eth2/types/src/beacon_state.rs
View File

@ -216,7 +216,7 @@ impl<T: EthSpec> BeaconState<T> {
// Versioning
genesis_time,
slot: spec.genesis_slot,
fork: Fork::genesis(T::genesis_epoch()),
fork: spec.genesis_fork.clone(),
// History
latest_block_header: BeaconBlock::<T>::empty(spec).temporary_block_header(),

40
eth2/types/src/chain_spec.rs
View File

@ -91,8 +91,15 @@ pub struct ChainSpec {
domain_voluntary_exit: u32,
domain_transfer: u32,
/*
* Eth1
*/
pub eth1_follow_distance: u64,
pub boot_nodes: Vec<String>,
pub network_id: u8,
pub genesis_fork: Fork,
}
impl ChainSpec {
@ -118,6 +125,22 @@ impl ChainSpec {
u64::from_le_bytes(fork_and_domain)
}
/// Get the domain for a deposit signature.
///
/// Deposits are valid across forks, thus the deposit domain is computed
/// with the fork zeroed.
///
/// Spec v0.8.1
pub fn get_deposit_domain(&self) -> u64 {
let mut bytes: Vec<u8> = int_to_bytes4(self.domain_deposit);
bytes.append(&mut vec![0; 4]);
let mut fork_and_domain = [0; 8];
fork_and_domain.copy_from_slice(&bytes);
u64::from_le_bytes(fork_and_domain)
}
/// Returns a `ChainSpec` compatible with the Ethereum Foundation specification.
///
/// Spec v0.8.1
@ -186,6 +209,20 @@ impl ChainSpec {
domain_voluntary_exit: 4,
domain_transfer: 5,
/*
* Eth1
*/
eth1_follow_distance: 1_024,
/*
* Fork
*/
genesis_fork: Fork {
previous_version: [0; 4],
current_version: [0; 4],
epoch: Epoch::new(0),
},
/*
* Network specific
*/
@ -210,6 +247,7 @@ impl ChainSpec {
max_epochs_per_crosslink: 4,
network_id: 2, // lighthouse testnet network id
boot_nodes,
eth1_follow_distance: 16,
..ChainSpec::mainnet()
}
}
@ -248,7 +286,7 @@ mod tests {
}
fn test_domain(domain_type: Domain, raw_domain: u32, spec: &ChainSpec) {
let fork = Fork::genesis(Epoch::new(0));
let fork = &spec.genesis_fork;
let epoch = Epoch::new(0);
let domain = spec.get_domain(epoch, domain_type, &fork);

2
eth2/types/src/deposit.rs
View File

@ -7,6 +7,8 @@ use ssz_derive::{Decode, Encode};
use test_random_derive::TestRandom;
use tree_hash_derive::TreeHash;
pub const DEPOSIT_TREE_DEPTH: usize = 32;
/// A deposit to potentially become a beacon chain validator.
///
/// Spec v0.8.0

10
eth2/types/src/deposit_data.rs
View File

@ -36,15 +36,9 @@ impl DepositData {
/// Generate the signature for a given DepositData details.
///
/// Spec v0.8.1
pub fn create_signature(
&self,
secret_key: &SecretKey,
epoch: Epoch,
fork: &Fork,
spec: &ChainSpec,
) -> SignatureBytes {
pub fn create_signature(&self, secret_key: &SecretKey, spec: &ChainSpec) -> SignatureBytes {
let msg = self.signed_root();
let domain = spec.get_domain(epoch, Domain::Deposit, fork);
let domain = spec.get_deposit_domain();
SignatureBytes::from(Signature::new(msg.as_slice(), domain, secret_key))
}

13
eth2/types/src/eth1_data.rs
View File

@ -10,7 +10,18 @@ use tree_hash_derive::TreeHash;
///
/// Spec v0.8.1
#[derive(
Debug, PartialEq, Clone, Default, Serialize, Deserialize, Encode, Decode, TreeHash, TestRandom,
Debug,
PartialEq,
Clone,
Default,
Eq,
Hash,
Serialize,
Deserialize,
Encode,
Decode,
TreeHash,
TestRandom,
)]
pub struct Eth1Data {
pub deposit_root: Hash256,

29
eth2/types/src/fork.rs
View File

@ -28,17 +28,6 @@ pub struct Fork {
}
impl Fork {
/// Initialize the `Fork` from the genesis parameters in the `spec`.
///
/// Spec v0.8.1
pub fn genesis(genesis_epoch: Epoch) -> Self {
Self {
previous_version: [0; 4],
current_version: [0; 4],
epoch: genesis_epoch,
}
}
/// Return the fork version of the given ``epoch``.
///
/// Spec v0.8.1
@ -56,24 +45,6 @@ mod tests {
ssz_tests!(Fork);
fn test_genesis(epoch: Epoch) {
let fork = Fork::genesis(epoch);
assert_eq!(fork.epoch, epoch, "epoch incorrect");
assert_eq!(
fork.previous_version, fork.current_version,
"previous and current are not identical"
);
}
#[test]
fn genesis() {
test_genesis(Epoch::new(0));
test_genesis(Epoch::new(11));
test_genesis(Epoch::new(2_u64.pow(63)));
test_genesis(Epoch::max_value());
}
#[test]
fn get_fork_version() {
let previous_version = [1; 4];

2
eth2/types/src/lib.rs
View File

@ -58,7 +58,7 @@ pub use crate::checkpoint::Checkpoint;
pub use crate::compact_committee::CompactCommittee;
pub use crate::crosslink::Crosslink;
pub use crate::crosslink_committee::{CrosslinkCommittee, OwnedCrosslinkCommittee};
pub use crate::deposit::Deposit;
pub use crate::deposit::{Deposit, DEPOSIT_TREE_DEPTH};
pub use crate::deposit_data::DepositData;
pub use crate::eth1_data::Eth1Data;
pub use crate::fork::Fork;

8
eth2/types/src/test_utils/builders/testing_beacon_block_builder.rs
View File

@ -294,13 +294,7 @@ impl<T: EthSpec> TestingBeaconBlockBuilder<T> {
let keypair = Keypair::random();
let mut builder = TestingDepositBuilder::new(keypair.pk.clone(), amount);
builder.sign(
&test_task,
&keypair,
state.slot.epoch(T::slots_per_epoch()),
&state.fork,
spec,
);
builder.sign(&test_task, &keypair, spec);
datas.push(builder.build().data);
}

14
eth2/types/src/test_utils/builders/testing_deposit_builder.rs
View File

@ -30,14 +30,7 @@ impl TestingDepositBuilder {
/// - `pubkey` to the signing pubkey.
/// - `withdrawal_credentials` to the signing pubkey.
/// - `proof_of_possession`
pub fn sign(
&mut self,
test_task: &DepositTestTask,
keypair: &Keypair,
epoch: Epoch,
fork: &Fork,
spec: &ChainSpec,
) {
pub fn sign(&mut self, test_task: &DepositTestTask, keypair: &Keypair, spec: &ChainSpec) {
let new_key = Keypair::random();
let mut pubkeybytes = PublicKeyBytes::from(keypair.pk.clone());
let mut secret_key = keypair.sk.clone();
@ -61,10 +54,7 @@ impl TestingDepositBuilder {
// Building the data and signing it
self.deposit.data.pubkey = pubkeybytes;
self.deposit.data.withdrawal_credentials = withdrawal_credentials;
self.deposit.data.signature =
self.deposit
.data
.create_signature(&secret_key, epoch, fork, spec);
self.deposit.data.signature = self.deposit.data.create_signature(&secret_key, spec);
}
/// Builds the deposit, consuming the builder.

1
eth2/utils/eth2_config/Cargo.toml
View File

@ -5,7 +5,6 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dependencies]
clap = "2.33.0"
serde = "1.0.102"
serde_derive = "1.0.102"
toml = "0.5.4"

41
eth2/utils/eth2_config/src/lib.rs
View File

@ -1,9 +1,7 @@
use clap::ArgMatches;
use serde_derive::{Deserialize, Serialize};
use std::fs::File;
use std::io::prelude::*;
use std::path::PathBuf;
use std::time::SystemTime;
use types::ChainSpec;
/// The core configuration of a Lighthouse beacon node.
@ -46,33 +44,6 @@ impl Eth2Config {
}
}
impl Eth2Config {
/// Apply the following arguments to `self`, replacing values if they are specified in `args`.
///
/// Returns an error if arguments are obviously invalid. May succeed even if some values are
/// invalid.
pub fn apply_cli_args(&mut self, args: &ArgMatches) -> Result<(), &'static str> {
if args.is_present("recent-genesis") {
self.spec.min_genesis_time = recent_genesis_time()
}
Ok(())
}
}
/// Returns the system time, mod 30 minutes.
///
/// Used for easily creating testnets.
fn recent_genesis_time() -> u64 {
let now = SystemTime::now()
.duration_since(SystemTime::UNIX_EPOCH)
.unwrap()
.as_secs();
let secs_after_last_period = now.checked_rem(30 * 60).unwrap_or(0);
// genesis is now the last 30 minute block.
now - secs_after_last_period
}
/// Write a configuration to file.
pub fn write_to_file<T>(path: PathBuf, config: &T) -> Result<(), String>
where
@ -111,3 +82,15 @@ where
Ok(None)
}
}
#[cfg(test)]
mod tests {
use super::*;
use toml;
#[test]
fn serde_serialize() {
let _ =
toml::to_string(&Eth2Config::default()).expect("Should serde encode default config");
}
}

14
eth2/utils/remote_beacon_node/Cargo.toml Normal file
View File

@ -0,0 +1,14 @@
[package]
name = "remote_beacon_node"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
reqwest = "0.9"
url = "1.2"
serde = "1.0"
futures = "0.1.25"
types = { path = "../../../eth2/types" }

141
eth2/utils/remote_beacon_node/src/lib.rs Normal file
View File

@ -0,0 +1,141 @@
//! Provides a `RemoteBeaconNode` which interacts with a HTTP API on another Lighthouse (or
//! compatible) instance.
//!
//! Presently, this is only used for testing but it _could_ become a user-facing library.
use futures::{Future, IntoFuture};
use reqwest::r#async::{Client, RequestBuilder};
use serde::Deserialize;
use std::marker::PhantomData;
use std::net::SocketAddr;
use types::{BeaconBlock, BeaconState, EthSpec};
use types::{Hash256, Slot};
use url::Url;
/// Connects to a remote Lighthouse (or compatible) node via HTTP.
pub struct RemoteBeaconNode<E: EthSpec> {
pub http: HttpClient<E>,
}
impl<E: EthSpec> RemoteBeaconNode<E> {
pub fn new(http_endpoint: SocketAddr) -> Result<Self, String> {
Ok(Self {
http: HttpClient::new(format!("http://{}", http_endpoint.to_string()))
.map_err(|e| format!("Unable to create http client: {:?}", e))?,
})
}
}
#[derive(Debug)]
pub enum Error {
UrlParseError(url::ParseError),
ReqwestError(reqwest::Error),
}
#[derive(Clone)]
pub struct HttpClient<E> {
client: Client,
url: Url,
_phantom: PhantomData<E>,
}
impl<E: EthSpec> HttpClient<E> {
/// Creates a new instance (without connecting to the node).
pub fn new(server_url: String) -> Result<Self, Error> {
Ok(Self {
client: Client::new(),
url: Url::parse(&server_url)?,
_phantom: PhantomData,
})
}
pub fn beacon(&self) -> Beacon<E> {
Beacon(self.clone())
}
fn url(&self, path: &str) -> Result<Url, Error> {
self.url.join(path).map_err(|e| e.into())
}
pub fn get(&self, path: &str) -> Result<RequestBuilder, Error> {
self.url(path)
.map(|url| Client::new().get(&url.to_string()))
}
}
/// Provides the functions on the `/beacon` endpoint of the node.
#[derive(Clone)]
pub struct Beacon<E>(HttpClient<E>);
impl<E: EthSpec> Beacon<E> {
fn url(&self, path: &str) -> Result<Url, Error> {
self.0
.url("beacon/")
.and_then(move |url| url.join(path).map_err(Error::from))
.map_err(Into::into)
}
/// Returns the block and block root at the given slot.
pub fn block_at_slot(
&self,
slot: Slot,
) -> impl Future<Item = (BeaconBlock<E>, Hash256), Error = Error> {
let client = self.0.clone();
self.url("block")
.into_future()
.and_then(move |mut url| {
url.query_pairs_mut()
.append_pair("slot", &format!("{}", slot.as_u64()));
client.get(&url.to_string())
})
.and_then(|builder| builder.send().map_err(Error::from))
.and_then(|response| response.error_for_status().map_err(Error::from))
.and_then(|mut success| success.json::<BlockResponse<E>>().map_err(Error::from))
.map(|response| (response.beacon_block, response.root))
}
/// Returns the state and state root at the given slot.
pub fn state_at_slot(
&self,
slot: Slot,
) -> impl Future<Item = (BeaconState<E>, Hash256), Error = Error> {
let client = self.0.clone();
self.url("state")
.into_future()
.and_then(move |mut url| {
url.query_pairs_mut()
.append_pair("slot", &format!("{}", slot.as_u64()));
client.get(&url.to_string())
})
.and_then(|builder| builder.send().map_err(Error::from))
.and_then(|response| response.error_for_status().map_err(Error::from))
.and_then(|mut success| success.json::<StateResponse<E>>().map_err(Error::from))
.map(|response| (response.beacon_state, response.root))
}
}
#[derive(Deserialize)]
#[serde(bound = "T: EthSpec")]
pub struct BlockResponse<T: EthSpec> {
pub beacon_block: BeaconBlock<T>,
pub root: Hash256,
}
#[derive(Deserialize)]
#[serde(bound = "T: EthSpec")]
pub struct StateResponse<T: EthSpec> {
pub beacon_state: BeaconState<T>,
pub root: Hash256,
}
impl From<reqwest::Error> for Error {
fn from(e: reqwest::Error) -> Error {
Error::ReqwestError(e)
}
}
impl From<url::ParseError> for Error {
fn from(e: url::ParseError) -> Error {
Error::UrlParseError(e)
}
}

4
lcli/Cargo.toml
View File

@ -18,3 +18,7 @@ types = { path = "../eth2/types" }
state_processing = { path = "../eth2/state_processing" }
eth2_ssz = "0.1.2"
regex = "1.3.1"
eth1_test_rig = { path = "../tests/eth1_test_rig" }
futures = "0.1.25"
environment = { path = "../lighthouse/environment" }
web3 = "0.8.0"

78
lcli/src/deposit_contract.rs Normal file
View File

@ -0,0 +1,78 @@
use clap::ArgMatches;
use environment::Environment;
use eth1_test_rig::{DelayThenDeposit, DepositContract};
use futures::Future;
use std::time::Duration;
use types::{test_utils::generate_deterministic_keypair, EthSpec, Hash256};
use web3::{transports::Http, Web3};
pub fn run_deposit_contract<T: EthSpec>(
mut env: Environment<T>,
matches: &ArgMatches,
) -> Result<(), String> {
let count = matches
.value_of("count")
.ok_or_else(|| "Deposit count not specified")?
.parse::<usize>()
.map_err(|e| format!("Failed to parse deposit count: {}", e))?;
let delay = matches
.value_of("delay")
.ok_or_else(|| "Deposit count not specified")?
.parse::<u64>()
.map(Duration::from_millis)
.map_err(|e| format!("Failed to parse deposit count: {}", e))?;
let confirmations = matches
.value_of("confirmations")
.ok_or_else(|| "Confirmations not specified")?
.parse::<usize>()
.map_err(|e| format!("Failed to parse confirmations: {}", e))?;
let endpoint = matches
.value_of("endpoint")
.ok_or_else(|| "Endpoint not specified")?;
let (_event_loop, transport) = Http::new(&endpoint).map_err(|e| {
format!(
"Failed to start HTTP transport connected to ganache: {:?}",
e
)
})?;
let web3 = Web3::new(transport);
let deposit_contract = env
.runtime()
.block_on(DepositContract::deploy(web3, confirmations))
.map_err(|e| format!("Failed to deploy contract: {}", e))?;
info!(
"Deposit contract deployed. Address: {}",
deposit_contract.address()
);
env.runtime()
.block_on(do_deposits::<T>(deposit_contract, count, delay))
.map_err(|e| format!("Failed to submit deposits: {}", e))?;
Ok(())
}
fn do_deposits<T: EthSpec>(
deposit_contract: DepositContract,
count: usize,
delay: Duration,
) -> impl Future<Item = (), Error = String> {
let deposits = (0..count)
.map(|i| DelayThenDeposit {
deposit: deposit_contract.deposit_helper::<T>(
generate_deterministic_keypair(i),
Hash256::from_low_u64_le(i as u64),
32_000_000_000,
),
delay,
})
.collect();
deposit_contract.deposit_multiple(deposits)
}

55
lcli/src/main.rs
View File

@ -1,11 +1,15 @@
#[macro_use]
extern crate log;
mod deposit_contract;
mod parse_hex;
mod pycli;
mod transition_blocks;
use clap::{App, Arg, SubCommand};
use deposit_contract::run_deposit_contract;
use environment::EnvironmentBuilder;
use log::Level;
use parse_hex::run_parse_hex;
use pycli::run_pycli;
use std::fs::File;
@ -17,7 +21,7 @@ use types::{test_utils::TestingBeaconStateBuilder, EthSpec, MainnetEthSpec, Mini
type LocalEthSpec = MinimalEthSpec;
fn main() {
simple_logger::init().expect("logger should initialize");
simple_logger::init_with_level(Level::Info).expect("logger should initialize");
let matches = App::new("Lighthouse CLI Tool")
.version("0.1.0")
@ -115,6 +119,45 @@ fn main() {
.help("SSZ encoded as 0x-prefixed hex"),
),
)
.subcommand(
SubCommand::with_name("deposit-contract")
.about(
"Uses an eth1 test rpc (e.g., ganache-cli) to simulate the deposit contract.",
)
.version("0.1.0")
.author("Paul Hauner <paul@sigmaprime.io>")
.arg(
Arg::with_name("count")
.short("c")
.value_name("INTEGER")
.takes_value(true)
.required(true)
.help("The number of deposits to be submitted."),
)
.arg(
Arg::with_name("delay")
.short("d")
.value_name("MILLIS")
.takes_value(true)
.required(true)
.help("The delay (in milliseconds) between each deposit"),
)
.arg(
Arg::with_name("endpoint")
.short("e")
.value_name("HTTP_SERVER")
.takes_value(true)
.default_value("http://localhost:8545")
.help("The URL to the eth1 JSON-RPC http API."),
)
.arg(
Arg::with_name("confirmations")
.value_name("INTEGER")
.takes_value(true)
.default_value("3")
.help("The number of block confirmations before declaring the contract deployed."),
)
)
.subcommand(
SubCommand::with_name("pycli")
.about("TODO")
@ -132,6 +175,14 @@ fn main() {
)
.get_matches();
let env = EnvironmentBuilder::minimal()
.multi_threaded_tokio_runtime()
.expect("should start tokio runtime")
.null_logger()
.expect("should start null logger")
.build()
.expect("should build env");
match matches.subcommand() {
("genesis_yaml", Some(matches)) => {
let num_validators = matches
@ -178,6 +229,8 @@ fn main() {
}
("pycli", Some(matches)) => run_pycli::<LocalEthSpec>(matches)
.unwrap_or_else(|e| error!("Failed to run pycli: {}", e)),
("deposit-contract", Some(matches)) => run_deposit_contract::<LocalEthSpec>(env, matches)
.unwrap_or_else(|e| error!("Failed to run deposit contract sim: {}", e)),
(other, _) => error!("Unknown subcommand {}. See --help.", other),
}
}

20
lighthouse/Cargo.toml Normal file
View File

@ -0,0 +1,20 @@
[package]
name = "lighthouse"
version = "0.1.0"
authors = ["Sigma Prime <contact@sigmaprime.io>"]
edition = "2018"
[dependencies]
beacon_node = { "path" = "../beacon_node" }
tokio = "0.1.15"
slog = { version = "^2.2.3" , features = ["max_level_trace"] }
sloggers = "0.3.4"
types = { "path" = "../eth2/types" }
clap = "2.32.0"
env_logger = "0.6.1"
logging = { path = "../eth2/utils/logging" }
slog-term = "^2.4.0"
slog-async = "^2.3.0"
environment = { path = "./environment" }
futures = "0.1.25"
validator_client = { "path" = "../validator_client" }

19
lighthouse/environment/Cargo.toml Normal file
View File

@ -0,0 +1,19 @@
[package]
name = "environment"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dependencies]
tokio = "0.1.15"
slog = { version = "^2.2.3" , features = ["max_level_trace"] }
sloggers = "0.3.4"
types = { "path" = "../../eth2/types" }
eth2_config = { "path" = "../../eth2/utils/eth2_config" }
env_logger = "0.6.1"
logging = { path = "../../eth2/utils/logging" }
slog-term = "^2.4.0"
slog-async = "^2.3.0"
ctrlc = { version = "3.1.1", features = ["termination"] }
futures = "0.1.25"
parking_lot = "0.7"

241
lighthouse/environment/src/lib.rs Normal file
View File

@ -0,0 +1,241 @@
//! This crate aims to provide a common set of tools that can be used to create a "environment" to
//! run Lighthouse services like the `beacon_node` or `validator_client`. This allows for the
//! unification of creating tokio runtimes, loggers and eth2 specifications in production and in
//! testing.
//!
//! The idea is that the main thread creates an `Environment`, which is then used to spawn a
//! `Context` which can be handed to any service that wishes to start async tasks or perform
//! logging.
use eth2_config::Eth2Config;
use futures::{sync::oneshot, Future};
use slog::{o, Drain, Level, Logger};
use sloggers::{null::NullLoggerBuilder, Build};
use std::cell::RefCell;
use tokio::runtime::{Builder as RuntimeBuilder, Runtime, TaskExecutor};
use types::{EthSpec, InteropEthSpec, MainnetEthSpec, MinimalEthSpec};
/// Builds an `Environment`.
pub struct EnvironmentBuilder<E: EthSpec> {
runtime: Option<Runtime>,
log: Option<Logger>,
eth_spec_instance: E,
eth2_config: Eth2Config,
}
impl EnvironmentBuilder<MinimalEthSpec> {
/// Creates a new builder using the `minimal` eth2 specification.
pub fn minimal() -> Self {
Self {
runtime: None,
log: None,
eth_spec_instance: MinimalEthSpec,
eth2_config: Eth2Config::minimal(),
}
}
}
impl EnvironmentBuilder<MainnetEthSpec> {
/// Creates a new builder using the `mainnet` eth2 specification.
pub fn mainnet() -> Self {
Self {
runtime: None,
log: None,
eth_spec_instance: MainnetEthSpec,
eth2_config: Eth2Config::mainnet(),
}
}
}
impl EnvironmentBuilder<InteropEthSpec> {
/// Creates a new builder using the `interop` eth2 specification.
pub fn interop() -> Self {
Self {
runtime: None,
log: None,
eth_spec_instance: InteropEthSpec,
eth2_config: Eth2Config::interop(),
}
}
}
impl<E: EthSpec> EnvironmentBuilder<E> {
/// Specifies that a multi-threaded tokio runtime should be used. Ideal for production uses.
///
/// The `Runtime` used is just the standard tokio runtime.
pub fn multi_threaded_tokio_runtime(mut self) -> Result<Self, String> {
self.runtime =
Some(Runtime::new().map_err(|e| format!("Failed to start runtime: {:?}", e))?);
Ok(self)
}
/// Specifies that a single-threaded tokio runtime should be used. Ideal for testing purposes
/// where tests are already multi-threaded.
///
/// This can solve problems if "too many open files" errors are thrown during tests.
pub fn single_thread_tokio_runtime(mut self) -> Result<Self, String> {
self.runtime = Some(
RuntimeBuilder::new()
.core_threads(1)
.build()
.map_err(|e| format!("Failed to start runtime: {:?}", e))?,
);
Ok(self)
}
/// Specifies that all logs should be sent to `null` (i.e., ignored).
pub fn null_logger(mut self) -> Result<Self, String> {
self.log = Some(null_logger()?);
Ok(self)
}
/// Specifies that the `slog` asynchronous logger should be used. Ideal for production.
///
/// The logger is "async" because it has a dedicated thread that accepts logs and then
/// asynchronously flushes them to stdout/files/etc. This means the thread that raised the log
/// does not have to wait for the logs to be flushed.
pub fn async_logger(mut self, debug_level: &str) -> Result<Self, String> {
// Build the initial logger.
let decorator = slog_term::TermDecorator::new().build();
let decorator = logging::AlignedTermDecorator::new(decorator, logging::MAX_MESSAGE_WIDTH);
let drain = slog_term::FullFormat::new(decorator).build().fuse();
let drain = slog_async::Async::new(drain).build();
let drain = match debug_level {
"info" => drain.filter_level(Level::Info),
"debug" => drain.filter_level(Level::Debug),
"trace" => drain.filter_level(Level::Trace),
"warn" => drain.filter_level(Level::Warning),
"error" => drain.filter_level(Level::Error),
"crit" => drain.filter_level(Level::Critical),
unknown => return Err(format!("Unknown debug-level: {}", unknown)),
};
self.log = Some(Logger::root(drain.fuse(), o!()));
Ok(self)
}
/// Consumes the builder, returning an `Environment`.
pub fn build(self) -> Result<Environment<E>, String> {
Ok(Environment {
runtime: self
.runtime
.ok_or_else(|| "Cannot build environment without runtime".to_string())?,
log: self
.log
.ok_or_else(|| "Cannot build environment without log".to_string())?,
eth_spec_instance: self.eth_spec_instance,
eth2_config: self.eth2_config,
})
}
}
/// An execution context that can be used by a service.
///
/// Distinct from an `Environment` because a `Context` is not able to give a mutable reference to a
/// `Runtime`, instead it only has access to a `TaskExecutor`.
#[derive(Clone)]
pub struct RuntimeContext<E: EthSpec> {
pub executor: TaskExecutor,
pub log: Logger,
pub eth_spec_instance: E,
pub eth2_config: Eth2Config,
}
impl<E: EthSpec> RuntimeContext<E> {
/// Returns a sub-context of this context.
///
/// The generated service will have the `service_name` in all it's logs.
pub fn service_context(&self, service_name: &'static str) -> Self {
Self {
executor: self.executor.clone(),
log: self.log.new(o!("service" => service_name)),
eth_spec_instance: self.eth_spec_instance.clone(),
eth2_config: self.eth2_config.clone(),
}
}
/// Returns the `eth2_config` for this service.
pub fn eth2_config(&self) -> &Eth2Config {
&self.eth2_config
}
}
/// An environment where Lighthouse services can run. Used to start a production beacon node or
/// validator client, or to run tests that involve logging and async task execution.
pub struct Environment<E: EthSpec> {
runtime: Runtime,
log: Logger,
eth_spec_instance: E,
eth2_config: Eth2Config,
}
impl<E: EthSpec> Environment<E> {
/// Returns a mutable reference to the `tokio` runtime.
///
/// Useful in the rare scenarios where it's necessary to block the current thread until a task
/// is finished (e.g., during testing).
pub fn runtime(&mut self) -> &mut Runtime {
&mut self.runtime
}
/// Returns a `Context` where no "service" has been added to the logger output.
pub fn core_context(&mut self) -> RuntimeContext<E> {
RuntimeContext {
executor: self.runtime.executor(),
log: self.log.clone(),
eth_spec_instance: self.eth_spec_instance.clone(),
eth2_config: self.eth2_config.clone(),
}
}
/// Returns a `Context` where the `service_name` is added to the logger output.
pub fn service_context(&mut self, service_name: &'static str) -> RuntimeContext<E> {
RuntimeContext {
executor: self.runtime.executor(),
log: self.log.new(o!("service" => service_name)),
eth_spec_instance: self.eth_spec_instance.clone(),
eth2_config: self.eth2_config.clone(),
}
}
/// Block the current thread until Ctrl+C is received.
pub fn block_until_ctrl_c(&mut self) -> Result<(), String> {
let (ctrlc_send, ctrlc_oneshot) = oneshot::channel();
let ctrlc_send_c = RefCell::new(Some(ctrlc_send));
ctrlc::set_handler(move || {
if let Some(ctrlc_send) = ctrlc_send_c.try_borrow_mut().unwrap().take() {
ctrlc_send.send(()).expect("Error sending ctrl-c message");
}
})
.map_err(|e| format!("Could not set ctrlc handler: {:?}", e))?;
// Block this thread until Crtl+C is pressed.
self.runtime()
.block_on(ctrlc_oneshot)
.map_err(|e| format!("Ctrlc oneshot failed: {:?}", e))
}
/// Shutdown the `tokio` runtime when all tasks are idle.
pub fn shutdown_on_idle(self) -> Result<(), String> {
self.runtime
.shutdown_on_idle()
.wait()
.map_err(|e| format!("Tokio runtime shutdown returned an error: {:?}", e))
}
pub fn eth_spec_instance(&self) -> &E {
&self.eth_spec_instance
}
pub fn eth2_config(&self) -> &Eth2Config {
&self.eth2_config
}
}
pub fn null_logger() -> Result<Logger, String> {
let log_builder = NullLoggerBuilder;
log_builder
.build()
.map_err(|e| format!("Failed to start null logger: {:?}", e))
}

165
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@ -0,0 +1,165 @@
#[macro_use]
extern crate clap;
use beacon_node::ProductionBeaconNode;
use clap::{App, Arg, ArgMatches};
use env_logger::{Builder, Env};
use environment::EnvironmentBuilder;
use slog::{crit, info, warn};
use std::process::exit;
use types::EthSpec;
use validator_client::ProductionValidatorClient;
pub const DEFAULT_DATA_DIR: &str = ".lighthouse";
pub const CLIENT_CONFIG_FILENAME: &str = "beacon-node.toml";
pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
fn main() {
// Debugging output for libp2p and external crates.
Builder::from_env(Env::default()).init();
// Parse the CLI parameters.
let matches = App::new("Lighthouse")
.version(crate_version!())
.author("Sigma Prime <contact@sigmaprime.io>")
.about("Eth 2.0 Client")
.arg(
Arg::with_name("spec")
.short("s")
.long("spec")
.value_name("TITLE")
.help("Specifies the default eth2 spec type. Only effective when creating a new datadir.")
.takes_value(true)
.required(true)
.possible_values(&["mainnet", "minimal", "interop"])
.global(true)
.default_value("minimal")
)
.arg(
Arg::with_name("logfile")
.long("logfile")
.value_name("FILE")
.help("File path where output will be written.")
.takes_value(true),
)
.arg(
Arg::with_name("debug-level")
.long("debug-level")
.value_name("LEVEL")
.help("The title of the spec constants for chain config.")
.takes_value(true)
.possible_values(&["info", "debug", "trace", "warn", "error", "crit"])
.default_value("trace"),
)
.subcommand(beacon_node::cli_app())
.subcommand(validator_client::cli_app())
.get_matches();
macro_rules! run_with_spec {
($env_builder: expr) => {
match run($env_builder, &matches) {
Ok(()) => exit(0),
Err(e) => {
println!("Failed to start Lighthouse: {}", e);
exit(1)
}
}
};
}
match matches.value_of("spec") {
Some("minimal") => run_with_spec!(EnvironmentBuilder::minimal()),
Some("mainnet") => run_with_spec!(EnvironmentBuilder::mainnet()),
Some("interop") => run_with_spec!(EnvironmentBuilder::interop()),
spec => {
// This path should be unreachable due to slog having a `default_value`
unreachable!("Unknown spec configuration: {:?}", spec);
}
}
}
fn run<E: EthSpec>(
environment_builder: EnvironmentBuilder<E>,
matches: &ArgMatches,
) -> Result<(), String> {
let mut environment = environment_builder
.async_logger(
matches
.value_of("debug-level")
.ok_or_else(|| "Expected --debug-level flag".to_string())?,
)?
.multi_threaded_tokio_runtime()?
.build()?;
let log = environment.core_context().log;
if std::mem::size_of::<usize>() != 8 {
crit!(
log,
"Lighthouse only supports 64bit CPUs";
"detected" => format!("{}bit", std::mem::size_of::<usize>() * 8)
);
return Err("Invalid CPU architecture".into());
}
warn!(
log,
"Ethereum 2.0 is pre-release. This software is experimental."
);
// Note: the current code technically allows for starting a beacon node _and_ a validator
// client at the same time.
//
// Whilst this is possible, the mutual-exclusivity of `clap` sub-commands prevents it from
// actually happening.
//
// Creating a command which can run both might be useful future works.
let beacon_node = if let Some(sub_matches) = matches.subcommand_matches("Beacon Node") {
let runtime_context = environment.core_context();
let beacon = environment
.runtime()
.block_on(ProductionBeaconNode::new_from_cli(
runtime_context,
sub_matches,
))
.map_err(|e| format!("Failed to start beacon node: {}", e))?;
Some(beacon)
} else {
None
};
let validator_client = if let Some(sub_matches) = matches.subcommand_matches("Validator Client")
{
let runtime_context = environment.core_context();
let validator = ProductionValidatorClient::new_from_cli(runtime_context, sub_matches)
.map_err(|e| format!("Failed to init validator client: {}", e))?;
validator
.start_service()
.map_err(|e| format!("Failed to start validator client service: {}", e))?;
Some(validator)
} else {
None
};
if beacon_node.is_none() && validator_client.is_none() {
crit!(log, "No subcommand supplied. See --help .");
return Err("No subcommand supplied.".into());
}
// Block this thread until Crtl+C is pressed.
environment.block_until_ctrl_c()?;
info!(log, "Shutting down..");
drop(beacon_node);
drop(validator_client);
// Shutdown the environment once all tasks have completed.
environment.shutdown_on_idle()
}

8
scripts/ganache_test_node.sh Executable file
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@ -0,0 +1,8 @@
#!/usr/bin/env bash
ganache-cli \
--defaultBalanceEther 1000000000 \
--gasLimit 1000000000 \
--accounts 10 \
--mnemonic "vast thought differ pull jewel broom cook wrist tribe word before omit" \
--port 8545 \

8
scripts/whiteblock_start.sh
View File

@ -74,9 +74,10 @@ do
shift
done
./beacon_node \
--p2p-priv-key $IDENTITY \
./lighthouse \
--logfile $BEACON_LOG_FILE \
beacon \
--p2p-priv-key $IDENTITY \
--libp2p-addresses $PEERS \
--port $PORT \
testnet \
@ -86,8 +87,9 @@ done
$GEN_STATE \
& \
./validator_client \
./lighthouse \
--logfile $VALIDATOR_LOG_FILE \
validator \
testnet \
--bootstrap \
interop-yaml \

1
tests/eth1_test_rig/.gitignore vendored Normal file
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@ -0,0 +1 @@
contract/

19
tests/eth1_test_rig/Cargo.toml Normal file
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@ -0,0 +1,19 @@
[package]
name = "eth1_test_rig"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
build = "build.rs"
[build-dependencies]
reqwest = "0.9.20"
serde_json = "1.0"
[dependencies]
web3 = "0.8.0"
tokio = "0.1.17"
futures = "0.1.25"
types = { path = "../../eth2/types"}
eth2_ssz = { path = "../../eth2/utils/ssz"}
serde_json = "1.0"

95
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@ -0,0 +1,95 @@
//! Downloads the ABI and bytecode for the deposit contract from the ethereum spec repository and
//! stores them in a `contract/` directory in the crate root.
//!
//! These files are required for some `include_bytes` calls used in this crate.
use reqwest::Response;
use serde_json::Value;
use std::env;
use std::fs::File;
use std::io::Write;
use std::path::PathBuf;
const GITHUB_RAW: &str = "https://raw.githubusercontent.com";
const SPEC_REPO: &str = "ethereum/eth2.0-specs";
const SPEC_TAG: &str = "v0.8.3";
const ABI_FILE: &str = "validator_registration.json";
const BYTECODE_FILE: &str = "validator_registration.bytecode";
fn main() {
match init_deposit_contract_abi() {
Ok(()) => (),
Err(e) => panic!(e),
}
}
/// Attempts to download the deposit contract ABI from github if a local copy is not already
/// present.
pub fn init_deposit_contract_abi() -> Result<(), String> {
let abi_file = abi_dir().join(format!("{}_{}", SPEC_TAG, ABI_FILE));
let bytecode_file = abi_dir().join(format!("{}_{}", SPEC_TAG, BYTECODE_FILE));
if abi_file.exists() {
// Nothing to do.
} else {
match download_abi() {
Ok(mut response) => {
let mut abi_file = File::create(abi_file)
.map_err(|e| format!("Failed to create local abi file: {:?}", e))?;
let mut bytecode_file = File::create(bytecode_file)
.map_err(|e| format!("Failed to create local bytecode file: {:?}", e))?;
let contract: Value = response
.json()
.map_err(|e| format!("Respsonse is not a valid json {:?}", e))?;
let abi = contract
.get("abi")
.ok_or(format!("Response does not contain key: abi"))?
.to_string();
abi_file
.write(abi.as_bytes())
.map_err(|e| format!("Failed to write http response to abi file: {:?}", e))?;
let bytecode = contract
.get("bytecode")
.ok_or(format!("Response does not contain key: bytecode"))?
.to_string();
bytecode_file.write(bytecode.as_bytes()).map_err(|e| {
format!("Failed to write http response to bytecode file: {:?}", e)
})?;
}
Err(e) => {
return Err(format!(
"No abi file found. Failed to download from github: {:?}",
e
))
}
}
}
Ok(())
}
/// Attempts to download the deposit contract file from the Ethereum github.
fn download_abi() -> Result<Response, String> {
reqwest::get(&format!(
"{}/{}/{}/deposit_contract/contracts/{}",
GITHUB_RAW, SPEC_REPO, SPEC_TAG, ABI_FILE
))
.map_err(|e| format!("Failed to download deposit ABI from github: {:?}", e))
}
/// Returns the directory that will be used to store the deposit contract ABI.
fn abi_dir() -> PathBuf {
let base = env::var("CARGO_MANIFEST_DIR")
.expect("should know manifest dir")
.parse::<PathBuf>()
.expect("should parse manifest dir as path")
.join("contract");
std::fs::create_dir_all(base.clone())
.expect("should be able to create abi directory in manifest");
base
}

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use futures::Future;
use serde_json::json;
use std::io::prelude::*;
use std::io::BufReader;
use std::net::TcpListener;
use std::process::{Child, Command, Stdio};
use std::sync::Arc;
use std::time::{Duration, Instant};
use web3::{
transports::{EventLoopHandle, Http},
Transport, Web3,
};
/// How long we will wait for ganache to indicate that it is ready.
const GANACHE_STARTUP_TIMEOUT_MILLIS: u64 = 10_000;
/// Provides a dedicated `ganachi-cli` instance with a connected `Web3` instance.
///
/// Requires that `ganachi-cli` is installed and available on `PATH`.
pub struct GanacheInstance {
pub port: u16,
child: Child,
_event_loop: Arc<EventLoopHandle>,
pub web3: Web3<Http>,
}
impl GanacheInstance {
/// Start a new `ganache-cli` process, waiting until it indicates that it is ready to accept
/// RPC connections.
pub fn new() -> Result<Self, String> {
let port = unused_port()?;
let mut child = Command::new("ganache-cli")
.stdout(Stdio::piped())
.arg("--defaultBalanceEther")
.arg("1000000000")
.arg("--gasLimit")
.arg("1000000000")
.arg("--accounts")
.arg("10")
.arg("--port")
.arg(format!("{}", port))
.arg("--mnemonic")
.arg("\"vast thought differ pull jewel broom cook wrist tribe word before omit\"")
.spawn()
.map_err(|e| {
format!(
"Failed to start ganche-cli. \
Is it ganache-cli installed and available on $PATH? Error: {:?}",
e
)
})?;
let stdout = child
.stdout
.ok_or_else(|| "Unable to get stdout for ganache child process")?;
let start = Instant::now();
let mut reader = BufReader::new(stdout);
loop {
if start + Duration::from_millis(GANACHE_STARTUP_TIMEOUT_MILLIS) <= Instant::now() {
break Err(
"Timed out waiting for ganache to start. Is ganache-cli installed?".to_string(),
);
}
let mut line = String::new();
if let Err(e) = reader.read_line(&mut line) {
break Err(format!("Failed to read line from ganache process: {:?}", e));
} else if line.starts_with("Listening on") {
break Ok(());
} else {
continue;
}
}?;
let (event_loop, transport) = Http::new(&endpoint(port)).map_err(|e| {
format!(
"Failed to start HTTP transport connected to ganache: {:?}",
e
)
})?;
let web3 = Web3::new(transport);
child.stdout = Some(reader.into_inner());
Ok(Self {
child,
port,
_event_loop: Arc::new(event_loop),
web3,
})
}
/// Returns the endpoint that this instance is listening on.
pub fn endpoint(&self) -> String {
endpoint(self.port)
}
/// Increase the timestamp on future blocks by `increase_by` seconds.
pub fn increase_time(&self, increase_by: u64) -> impl Future<Item = (), Error = String> {
self.web3
.transport()
.execute("evm_increaseTime", vec![json!(increase_by)])
.map(|_json_value| ())
.map_err(|e| format!("Failed to increase time on EVM (is this ganache?): {:?}", e))
}
/// Returns the current block number, as u64
pub fn block_number(&self) -> impl Future<Item = u64, Error = String> {
self.web3
.eth()
.block_number()
.map(|v| v.as_u64())
.map_err(|e| format!("Failed to get block number: {:?}", e))
}
/// Mines a single block.
pub fn evm_mine(&self) -> impl Future<Item = (), Error = String> {
self.web3
.transport()
.execute("evm_mine", vec![])
.map(|_| ())
.map_err(|_| {
"utils should mine new block with evm_mine (only works with ganache-cli!)"
.to_string()
})
}
}
fn endpoint(port: u16) -> String {
format!("http://localhost:{}", port)
}
/// A bit of hack to find an unused TCP port.
///
/// Does not guarantee that the given port is unused after the function exists, just that it was
/// unused before the function started (i.e., it does not reserve a port).
pub fn unused_port() -> Result<u16, String> {
let listener = TcpListener::bind("127.0.0.1:0")
.map_err(|e| format!("Failed to create TCP listener to find unused port: {:?}", e))?;
let local_addr = listener.local_addr().map_err(|e| {
format!(
"Failed to read TCP listener local_addr to find unused port: {:?}",
e
)
})?;
Ok(local_addr.port())
}
impl Drop for GanacheInstance {
fn drop(&mut self) {
let _ = self.child.kill();
}
}

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@ -0,0 +1,240 @@
//! Provides utilities for deploying and manipulating the eth2 deposit contract on the eth1 chain.
//!
//! Presently used with [`ganache-cli`](https://github.com/trufflesuite/ganache-cli) to simulate
//! the deposit contract for testing beacon node eth1 integration.
//!
//! Not tested to work with actual clients (e.g., geth). It should work fine, however there may be
//! some initial issues.
mod ganache;
use futures::{stream, Future, IntoFuture, Stream};
use ganache::GanacheInstance;
use ssz::Encode;
use std::time::{Duration, Instant};
use tokio::{runtime::Runtime, timer::Delay};
use types::DepositData;
use types::{EthSpec, Hash256, Keypair, Signature};
use web3::contract::{Contract, Options};
use web3::transports::Http;
use web3::types::{Address, U256};
use web3::{Transport, Web3};
pub const DEPLOYER_ACCOUNTS_INDEX: usize = 0;
pub const DEPOSIT_ACCOUNTS_INDEX: usize = 0;
const CONTRACT_DEPLOY_GAS: usize = 4_000_000;
const DEPOSIT_GAS: usize = 4_000_000;
// Deposit contract
pub const ABI: &[u8] = include_bytes!("../contract/v0.8.3_validator_registration.json");
pub const BYTECODE: &[u8] = include_bytes!("../contract/v0.8.3_validator_registration.bytecode");
/// Provides a dedicated ganache-cli instance with the deposit contract already deployed.
pub struct GanacheEth1Instance {
pub ganache: GanacheInstance,
pub deposit_contract: DepositContract,
}
impl GanacheEth1Instance {
pub fn new() -> impl Future<Item = Self, Error = String> {
GanacheInstance::new().into_future().and_then(|ganache| {
DepositContract::deploy(ganache.web3.clone(), 0).map(|deposit_contract| Self {
ganache,
deposit_contract,
})
})
}
pub fn endpoint(&self) -> String {
self.ganache.endpoint()
}
pub fn web3(&self) -> Web3<Http> {
self.ganache.web3.clone()
}
}
/// Deploys and provides functions for the eth2 deposit contract, deployed on the eth1 chain.
#[derive(Clone, Debug)]
pub struct DepositContract {
web3: Web3<Http>,
contract: Contract<Http>,
}
impl DepositContract {
pub fn deploy(
web3: Web3<Http>,
confirmations: usize,
) -> impl Future<Item = Self, Error = String> {
let web3_1 = web3.clone();
deploy_deposit_contract(web3.clone(), confirmations)
.map_err(|e| {
format!(
"Failed to deploy contract: {}. Is scripts/ganache_tests_node.sh running?.",
e
)
})
.and_then(move |address| {
Contract::from_json(web3_1.eth(), address, ABI)
.map_err(|e| format!("Failed to init contract: {:?}", e))
})
.map(|contract| Self { contract, web3 })
}
/// The deposit contract's address in `0x00ab...` format.
pub fn address(&self) -> String {
format!("0x{:x}", self.contract.address())
}
/// A helper to return a fully-formed `DepositData`. Does not submit the deposit data to the
/// smart contact.
pub fn deposit_helper<E: EthSpec>(
&self,
keypair: Keypair,
withdrawal_credentials: Hash256,
amount: u64,
) -> DepositData {
let mut deposit = DepositData {
pubkey: keypair.pk.into(),
withdrawal_credentials,
amount,
signature: Signature::empty_signature().into(),
};
deposit.signature = deposit.create_signature(&keypair.sk, &E::default_spec());
deposit
}
/// Creates a random, valid deposit and submits it to the deposit contract.
///
/// The keypairs are created randomly and destroyed.
pub fn deposit_random<E: EthSpec>(&self, runtime: &mut Runtime) -> Result<(), String> {
let keypair = Keypair::random();
let mut deposit = DepositData {
pubkey: keypair.pk.into(),
withdrawal_credentials: Hash256::zero(),
amount: 32_000_000_000,
signature: Signature::empty_signature().into(),
};
deposit.signature = deposit.create_signature(&keypair.sk, &E::default_spec());
self.deposit(runtime, deposit)
}
/// Perfoms a blocking deposit.
pub fn deposit(&self, runtime: &mut Runtime, deposit_data: DepositData) -> Result<(), String> {
runtime
.block_on(self.deposit_async(deposit_data))
.map_err(|e| format!("Deposit failed: {:?}", e))
}
/// Performs a non-blocking deposit.
pub fn deposit_async(
&self,
deposit_data: DepositData,
) -> impl Future<Item = (), Error = String> {
let contract = self.contract.clone();
self.web3
.eth()
.accounts()
.map_err(|e| format!("Failed to get accounts: {:?}", e))
.and_then(|accounts| {
accounts
.get(DEPOSIT_ACCOUNTS_INDEX)
.cloned()
.ok_or_else(|| "Insufficient accounts for deposit".to_string())
})
.and_then(move |from_address| {
let params = (
deposit_data.pubkey.as_ssz_bytes(),
deposit_data.withdrawal_credentials.as_ssz_bytes(),
deposit_data.signature.as_ssz_bytes(),
);
let options = Options {
gas: Some(U256::from(DEPOSIT_GAS)),
value: Some(from_gwei(deposit_data.amount)),
..Options::default()
};
contract
.call("deposit", params, from_address, options)
.map_err(|e| format!("Failed to call deposit fn: {:?}", e))
})
.map(|_| ())
}
/// Peforms many deposits, each preceded by a delay.
pub fn deposit_multiple(
&self,
deposits: Vec<DelayThenDeposit>,
) -> impl Future<Item = (), Error = String> {
let s = self.clone();
stream::unfold(deposits.into_iter(), move |mut deposit_iter| {
let s = s.clone();
match deposit_iter.next() {
Some(deposit) => Some(
Delay::new(Instant::now() + deposit.delay)
.map_err(|e| format!("Failed to execute delay: {:?}", e))
.and_then(move |_| s.deposit_async(deposit.deposit))
.map(move |yielded| (yielded, deposit_iter)),
),
None => None,
}
})
.collect()
.map(|_| ())
}
}
/// Describes a deposit and a delay that should should precede it's submission to the deposit
/// contract.
#[derive(Clone)]
pub struct DelayThenDeposit {
/// Wait this duration ...
pub delay: Duration,
/// ... then submit this deposit.
pub deposit: DepositData,
}
fn from_gwei(gwei: u64) -> U256 {
U256::from(gwei) * U256::exp10(9)
}
/// Deploys the deposit contract to the given web3 instance using the account with index
/// `DEPLOYER_ACCOUNTS_INDEX`.
fn deploy_deposit_contract<T: Transport>(
web3: Web3<T>,
confirmations: usize,
) -> impl Future<Item = Address, Error = String> {
let bytecode = String::from_utf8_lossy(&BYTECODE);
web3.eth()
.accounts()
.map_err(|e| format!("Failed to get accounts: {:?}", e))
.and_then(|accounts| {
accounts
.get(DEPLOYER_ACCOUNTS_INDEX)
.cloned()
.ok_or_else(|| "Insufficient accounts for deployer".to_string())
})
.and_then(move |deploy_address| {
Contract::deploy(web3.eth(), &ABI)
.map_err(|e| format!("Unable to build contract deployer: {:?}", e))?
.confirmations(confirmations)
.options(Options {
gas: Some(U256::from(CONTRACT_DEPLOY_GAS)),
..Options::default()
})
.execute(bytecode, (), deploy_address)
.map_err(|e| format!("Failed to execute deployment: {:?}", e))
})
.and_then(|pending_contract| {
pending_contract
.map(|contract| contract.address())
.map_err(|e| format!("Unable to resolve pending contract: {:?}", e))
})
}

18
tests/node_test_rig/Cargo.toml Normal file
View File

@ -0,0 +1,18 @@
[package]
name = "node_test_rig"
version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dependencies]
environment = { path = "../../lighthouse/environment" }
beacon_node = { path = "../../beacon_node" }
types = { path = "../../eth2/types" }
eth2_config = { path = "../../eth2/utils/eth2_config" }
tempdir = "0.3"
reqwest = "0.9"
url = "1.2"
serde = "1.0"
futures = "0.1.25"
genesis = { path = "../../beacon_node/genesis" }
remote_beacon_node = { path = "../../eth2/utils/remote_beacon_node" }

67
tests/node_test_rig/src/lib.rs Normal file
View File

@ -0,0 +1,67 @@
use beacon_node::{
beacon_chain::BeaconChainTypes, Client, ClientConfig, ClientGenesis, ProductionBeaconNode,
ProductionClient,
};
use environment::RuntimeContext;
use futures::Future;
use remote_beacon_node::RemoteBeaconNode;
use tempdir::TempDir;
use types::EthSpec;
pub use environment;
/// Provides a beacon node that is running in the current process. Useful for testing purposes.
pub struct LocalBeaconNode<T> {
pub client: T,
pub datadir: TempDir,
}
impl<E: EthSpec> LocalBeaconNode<ProductionClient<E>> {
/// Starts a new, production beacon node.
pub fn production(context: RuntimeContext<E>) -> Self {
let (client_config, datadir) = testing_client_config();
let client = ProductionBeaconNode::new(context, client_config)
.wait()
.expect("should build production client")
.into_inner();
LocalBeaconNode { client, datadir }
}
}
impl<T: BeaconChainTypes> LocalBeaconNode<Client<T>> {
/// Returns a `RemoteBeaconNode` that can connect to `self`. Useful for testing the node as if
/// it were external this process.
pub fn remote_node(&self) -> Result<RemoteBeaconNode<T::EthSpec>, String> {
Ok(RemoteBeaconNode::new(
self.client
.http_listen_addr()
.ok_or_else(|| "A remote beacon node must have a http server".to_string())?,
)?)
}
}
fn testing_client_config() -> (ClientConfig, TempDir) {
// Creates a temporary directory that will be deleted once this `TempDir` is dropped.
let tempdir = TempDir::new("lighthouse_node_test_rig")
.expect("should create temp directory for client datadir");
let mut client_config = ClientConfig::default();
client_config.data_dir = tempdir.path().into();
// Setting ports to `0` means that the OS will choose some available port.
client_config.network.libp2p_port = 0;
client_config.network.discovery_port = 0;
client_config.rpc.port = 0;
client_config.rest_api.port = 0;
client_config.websocket_server.port = 0;
client_config.genesis = ClientGenesis::Interop {
validator_count: 8,
genesis_time: 13_371_337,
};
(client_config, tempdir)
}

7
validator_client/Cargo.toml
View File

@ -4,10 +4,6 @@ version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>", "Age Manning <Age@AgeManning.com>", "Luke Anderson <luke@lukeanderson.com.au>"]
edition = "2018"
[[bin]]
name = "validator_client"
path = "src/main.rs"
[lib]
name = "validator_client"
path = "src/lib.rs"
@ -38,4 +34,7 @@ bincode = "1.2.0"
futures = "0.1.29"
dirs = "2.0.2"
logging = { path = "../eth2/utils/logging" }
environment = { path = "../lighthouse/environment" }
parking_lot = "0.7"
exit-future = "0.1.4"
libc = "0.2.65"

123
validator_client/src/cli.rs Normal file
View File

@ -0,0 +1,123 @@
use crate::config::{DEFAULT_SERVER, DEFAULT_SERVER_GRPC_PORT, DEFAULT_SERVER_HTTP_PORT};
use clap::{App, Arg, SubCommand};
pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
App::new("Validator Client")
.visible_aliases(&["v", "vc", "validator", "validator_client"])
.version("0.0.1")
.author("Sigma Prime <contact@sigmaprime.io>")
.about("Eth 2.0 Validator Client")
.arg(
Arg::with_name("datadir")
.long("datadir")
.short("d")
.value_name("DIR")
.help("Data directory for keys and databases.")
.takes_value(true),
)
.arg(
Arg::with_name("logfile")
.long("logfile")
.value_name("logfile")
.help("File path where output will be written.")
.takes_value(true),
)
.arg(
Arg::with_name("spec")
.long("spec")
.value_name("TITLE")
.help("Specifies the default eth2 spec type.")
.takes_value(true)
.possible_values(&["mainnet", "minimal", "interop"])
.conflicts_with("eth2-config")
.global(true)
)
.arg(
Arg::with_name("eth2-config")
.long("eth2-config")
.short("e")
.value_name("TOML_FILE")
.help("Path to Ethereum 2.0 config and specification file (e.g., eth2_spec.toml).")
.takes_value(true),
)
.arg(
Arg::with_name("server")
.long("server")
.value_name("NETWORK_ADDRESS")
.help("Address to connect to BeaconNode.")
.default_value(DEFAULT_SERVER)
.takes_value(true),
)
.arg(
Arg::with_name("server-grpc-port")
.long("server-grpc-port")
.short("g")
.value_name("PORT")
.help("Port to use for gRPC API connection to the server.")
.default_value(DEFAULT_SERVER_GRPC_PORT)
.takes_value(true),
)
.arg(
Arg::with_name("server-http-port")
.long("server-http-port")
.short("h")
.value_name("PORT")
.help("Port to use for HTTP API connection to the server.")
.default_value(DEFAULT_SERVER_HTTP_PORT)
.takes_value(true),
)
.arg(
Arg::with_name("debug-level")
.long("debug-level")
.value_name("LEVEL")
.short("s")
.help("The title of the spec constants for chain config.")
.takes_value(true)
.possible_values(&["info", "debug", "trace", "warn", "error", "crit"])
.default_value("trace"),
)
/*
* The "testnet" sub-command.
*
* Used for starting testnet validator clients.
*/
.subcommand(SubCommand::with_name("testnet")
.about("Starts a testnet validator using INSECURE, predicatable private keys, based off the canonical \
validator index. ONLY USE FOR TESTING PURPOSES!")
.arg(
Arg::with_name("bootstrap")
.short("b")
.long("bootstrap")
.help("Connect to the RPC server to download the eth2_config via the HTTP API.")
)
.subcommand(SubCommand::with_name("insecure")
.about("Uses the standard, predicatable `interop` keygen method to produce a range \
of predicatable private keys and starts performing their validator duties.")
.arg(Arg::with_name("first_validator")
.value_name("VALIDATOR_INDEX")
.required(true)
.help("The first validator public key to be generated for this client."))
.arg(Arg::with_name("validator_count")
.value_name("COUNT")
.required(true)
.help("The number of validators."))
)
.subcommand(SubCommand::with_name("interop-yaml")
.about("Loads plain-text secret keys from YAML files. Expects the interop format defined
in the ethereum/eth2.0-pm repo.")
.arg(Arg::with_name("path")
.value_name("PATH")
.required(true)
.help("Path to a YAML file."))
)
)
.subcommand(SubCommand::with_name("sign_block")
.about("Connects to the beacon server, requests a new block (after providing reveal),\
and prints the signed block to standard out")
.arg(Arg::with_name("validator")
.value_name("VALIDATOR")
.required(true)
.help("The pubkey of the validator that should sign the block.")
)
)
}

12
validator_client/src/duties/mod.rs
View File

@ -10,10 +10,10 @@ use self::epoch_duties::{EpochDuties, EpochDutiesMapError};
pub use self::epoch_duties::{EpochDutiesMap, WorkInfo};
use super::signer::Signer;
use futures::Async;
use parking_lot::RwLock;
use slog::{debug, error, info};
use std::fmt::Display;
use std::sync::Arc;
use std::sync::RwLock;
use types::{Epoch, PublicKey, Slot};
#[derive(Debug, PartialEq, Clone)]
@ -55,20 +55,20 @@ impl<U: BeaconNodeDuties, S: Signer + Display> DutiesManager<U, S> {
let duties = self.beacon_node.request_duties(epoch, &public_keys)?;
{
// If these duties were known, check to see if they're updates or identical.
if let Some(known_duties) = self.duties_map.read()?.get(&epoch) {
if let Some(known_duties) = self.duties_map.read().get(&epoch) {
if *known_duties == duties {
return Ok(UpdateOutcome::NoChange(epoch));
}
}
}
if !self.duties_map.read()?.contains_key(&epoch) {
if !self.duties_map.read().contains_key(&epoch) {
//TODO: Remove clone by removing duties from outcome
self.duties_map.write()?.insert(epoch, duties.clone());
self.duties_map.write().insert(epoch, duties.clone());
return Ok(UpdateOutcome::NewDuties(epoch, duties));
}
// duties have changed
//TODO: Duties could be large here. Remove from display and avoid the clone.
self.duties_map.write()?.insert(epoch, duties.clone());
self.duties_map.write().insert(epoch, duties.clone());
Ok(UpdateOutcome::DutiesChanged(epoch, duties))
}
@ -97,7 +97,7 @@ impl<U: BeaconNodeDuties, S: Signer + Display> DutiesManager<U, S> {
let mut current_work: Vec<(usize, WorkInfo)> = Vec::new();
// if the map is poisoned, return None
let duties = self.duties_map.read().ok()?;
let duties = self.duties_map.read();
for (index, validator_signer) in self.signers.iter().enumerate() {
match duties.is_work_slot(slot, &validator_signer.to_public()) {

260
validator_client/src/lib.rs
View File

@ -1,4 +1,258 @@
extern crate libc;
pub mod config;
mod attestation_producer;
mod block_producer;
mod cli;
mod config;
mod duties;
mod error;
mod service;
mod signer;
pub use crate::config::Config;
pub use cli::cli_app;
pub use config::Config;
use clap::ArgMatches;
use config::{Config as ClientConfig, KeySource};
use environment::RuntimeContext;
use eth2_config::Eth2Config;
use exit_future::Signal;
use futures::Stream;
use lighthouse_bootstrap::Bootstrapper;
use parking_lot::RwLock;
use protos::services_grpc::ValidatorServiceClient;
use service::Service;
use slog::{error, info, warn, Logger};
use slot_clock::SlotClock;
use std::path::PathBuf;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tokio::timer::Interval;
use types::{EthSpec, Keypair};
/// A fixed amount of time after a slot to perform operations. This gives the node time to complete
/// per-slot processes.
const TIME_DELAY_FROM_SLOT: Duration = Duration::from_millis(100);
#[derive(Clone)]
pub struct ProductionValidatorClient<T: EthSpec> {
context: RuntimeContext<T>,
service: Arc<Service<ValidatorServiceClient, Keypair, T>>,
exit_signals: Arc<RwLock<Vec<Signal>>>,
}
impl<T: EthSpec> ProductionValidatorClient<T> {
/// Instantiates the validator client, _without_ starting the timers to trigger block
/// and attestation production.
pub fn new_from_cli(context: RuntimeContext<T>, matches: &ArgMatches) -> Result<Self, String> {
let mut log = context.log.clone();
let (client_config, eth2_config) = get_configs(&matches, &mut log)
.map_err(|e| format!("Unable to initialize config: {}", e))?;
info!(
log,
"Starting validator client";
"datadir" => client_config.full_data_dir().expect("Unable to find datadir").to_str(),
);
let service: Service<ValidatorServiceClient, Keypair, T> =
Service::initialize_service(client_config, eth2_config, log.clone())
.map_err(|e| e.to_string())?;
Ok(Self {
context,
service: Arc::new(service),
exit_signals: Arc::new(RwLock::new(vec![])),
})
}
/// Starts the timers to trigger block and attestation production.
pub fn start_service(&self) -> Result<(), String> {
let service = self.clone().service;
let log = self.context.log.clone();
let duration_to_next_slot = service
.slot_clock
.duration_to_next_slot()
.ok_or_else(|| "Unable to determine duration to next slot. Exiting.".to_string())?;
// set up the validator work interval - start at next slot and proceed every slot
let interval = {
// Set the interval to start at the next slot, and every slot after
let slot_duration = Duration::from_millis(service.spec.milliseconds_per_slot);
//TODO: Handle checked add correctly
Interval::new(Instant::now() + duration_to_next_slot, slot_duration)
};
if service.slot_clock.now().is_none() {
warn!(
log,
"Starting node prior to genesis";
);
}
info!(
log,
"Waiting for next slot";
"seconds_to_wait" => duration_to_next_slot.as_secs()
);
let (exit_signal, exit_fut) = exit_future::signal();
self.exit_signals.write().push(exit_signal);
/* kick off the core service */
self.context.executor.spawn(
interval
.map_err(move |e| {
error! {
log,
"Timer thread failed";
"error" => format!("{}", e)
}
})
.and_then(move |_| if exit_fut.is_live() { Ok(()) } else { Err(()) })
.for_each(move |_| {
// wait for node to process
std::thread::sleep(TIME_DELAY_FROM_SLOT);
// if a non-fatal error occurs, proceed to the next slot.
let _ignore_error = service.per_slot_execution();
// completed a slot process
Ok(())
}),
);
Ok(())
}
}
/// Parses the CLI arguments and attempts to load the client and eth2 configuration.
///
/// This is not a pure function, it reads from disk and may contact network servers.
fn get_configs(
cli_args: &ArgMatches,
mut log: &mut Logger,
) -> Result<(ClientConfig, Eth2Config), String> {
let mut client_config = ClientConfig::default();
client_config.apply_cli_args(&cli_args, &mut log)?;
if let Some(server) = cli_args.value_of("server") {
client_config.server = server.to_string();
}
if let Some(port) = cli_args.value_of("server-http-port") {
client_config.server_http_port = port
.parse::<u16>()
.map_err(|e| format!("Unable to parse HTTP port: {:?}", e))?;
}
if let Some(port) = cli_args.value_of("server-grpc-port") {
client_config.server_grpc_port = port
.parse::<u16>()
.map_err(|e| format!("Unable to parse gRPC port: {:?}", e))?;
}
info!(
*log,
"Beacon node connection info";
"grpc_port" => client_config.server_grpc_port,
"http_port" => client_config.server_http_port,
"server" => &client_config.server,
);
let (client_config, eth2_config) = match cli_args.subcommand() {
("testnet", Some(sub_cli_args)) => {
if cli_args.is_present("eth2-config") && sub_cli_args.is_present("bootstrap") {
return Err(
"Cannot specify --eth2-config and --bootstrap as it may result \
in ambiguity."
.into(),
);
}
process_testnet_subcommand(sub_cli_args, client_config, log)
}
_ => return Err("You must use the testnet command. See '--help'.".into()),
}?;
Ok((client_config, eth2_config))
}
/// Parses the `testnet` CLI subcommand.
///
/// This is not a pure function, it reads from disk and may contact network servers.
fn process_testnet_subcommand(
cli_args: &ArgMatches,
mut client_config: ClientConfig,
log: &Logger,
) -> Result<(ClientConfig, Eth2Config), String> {
let eth2_config = if cli_args.is_present("bootstrap") {
info!(log, "Connecting to bootstrap server");
let bootstrapper = Bootstrapper::connect(
format!(
"http://{}:{}",
client_config.server, client_config.server_http_port
),
&log,
)?;
let eth2_config = bootstrapper.eth2_config()?;
info!(
log,
"Bootstrapped eth2 config via HTTP";
"slot_time_millis" => eth2_config.spec.milliseconds_per_slot,
"spec" => &eth2_config.spec_constants,
);
eth2_config
} else {
match cli_args.value_of("spec") {
Some("mainnet") => Eth2Config::mainnet(),
Some("minimal") => Eth2Config::minimal(),
Some("interop") => Eth2Config::interop(),
_ => return Err("No --spec flag provided. See '--help'.".into()),
}
};
client_config.key_source = match cli_args.subcommand() {
("insecure", Some(sub_cli_args)) => {
let first = sub_cli_args
.value_of("first_validator")
.ok_or_else(|| "No first validator supplied")?
.parse::<usize>()
.map_err(|e| format!("Unable to parse first validator: {:?}", e))?;
let count = sub_cli_args
.value_of("validator_count")
.ok_or_else(|| "No validator count supplied")?
.parse::<usize>()
.map_err(|e| format!("Unable to parse validator count: {:?}", e))?;
info!(
log,
"Generating unsafe testing keys";
"first_validator" => first,
"count" => count
);
KeySource::TestingKeypairRange(first..first + count)
}
("interop-yaml", Some(sub_cli_args)) => {
let path = sub_cli_args
.value_of("path")
.ok_or_else(|| "No yaml path supplied")?
.parse::<PathBuf>()
.map_err(|e| format!("Unable to parse yaml path: {:?}", e))?;
info!(
log,
"Loading keypairs from interop YAML format";
"path" => format!("{:?}", path),
);
KeySource::YamlKeypairs(path)
}
_ => KeySource::Disk,
};
Ok((client_config, eth2_config))
}

354
validator_client/src/main.rs
View File

@ -1,354 +0,0 @@
mod attestation_producer;
mod block_producer;
mod config;
mod duties;
pub mod error;
mod service;
mod signer;
use crate::config::{
Config as ClientConfig, KeySource, DEFAULT_SERVER, DEFAULT_SERVER_GRPC_PORT,
DEFAULT_SERVER_HTTP_PORT,
};
use crate::service::Service as ValidatorService;
use clap::{App, Arg, ArgMatches, SubCommand};
use eth2_config::Eth2Config;
use lighthouse_bootstrap::Bootstrapper;
use protos::services_grpc::ValidatorServiceClient;
use slog::{crit, error, info, o, Drain, Level, Logger};
use std::path::PathBuf;
use types::{InteropEthSpec, Keypair, MainnetEthSpec, MinimalEthSpec};
pub const DEFAULT_SPEC: &str = "minimal";
pub const DEFAULT_DATA_DIR: &str = ".lighthouse-validator";
pub const CLIENT_CONFIG_FILENAME: &str = "validator-client.toml";
pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
type Result<T> = core::result::Result<T, String>;
fn main() {
// Logging
let decorator = slog_term::TermDecorator::new().build();
let decorator = logging::AlignedTermDecorator::new(decorator, logging::MAX_MESSAGE_WIDTH);
let drain = slog_term::FullFormat::new(decorator).build().fuse();
let drain = slog_async::Async::new(drain).build().fuse();
// CLI
let matches = App::new("Lighthouse Validator Client")
.version("0.0.1")
.author("Sigma Prime <contact@sigmaprime.io>")
.about("Eth 2.0 Validator Client")
.arg(
Arg::with_name("datadir")
.long("datadir")
.short("d")
.value_name("DIR")
.help("Data directory for keys and databases.")
.takes_value(true),
)
.arg(
Arg::with_name("logfile")
.long("logfile")
.value_name("logfile")
.help("File path where output will be written.")
.takes_value(true),
)
.arg(
Arg::with_name("spec")
.long("spec")
.value_name("TITLE")
.help("Specifies the default eth2 spec type.")
.takes_value(true)
.possible_values(&["mainnet", "minimal", "interop"])
.conflicts_with("eth2-config")
.global(true)
)
.arg(
Arg::with_name("eth2-config")
.long("eth2-config")
.short("e")
.value_name("TOML_FILE")
.help("Path to Ethereum 2.0 config and specification file (e.g., eth2_spec.toml).")
.takes_value(true),
)
.arg(
Arg::with_name("server")
.long("server")
.value_name("NETWORK_ADDRESS")
.help("Address to connect to BeaconNode.")
.default_value(DEFAULT_SERVER)
.takes_value(true),
)
.arg(
Arg::with_name("server-grpc-port")
.long("server-grpc-port")
.short("g")
.value_name("PORT")
.help("Port to use for gRPC API connection to the server.")
.default_value(DEFAULT_SERVER_GRPC_PORT)
.takes_value(true),
)
.arg(
Arg::with_name("server-http-port")
.long("server-http-port")
.short("h")
.value_name("PORT")
.help("Port to use for HTTP API connection to the server.")
.default_value(DEFAULT_SERVER_HTTP_PORT)
.takes_value(true),
)
.arg(
Arg::with_name("debug-level")
.long("debug-level")
.value_name("LEVEL")
.short("s")
.help("The title of the spec constants for chain config.")
.takes_value(true)
.possible_values(&["info", "debug", "trace", "warn", "error", "crit"])
.default_value("trace"),
)
/*
* The "testnet" sub-command.
*
* Used for starting testnet validator clients.
*/
.subcommand(SubCommand::with_name("testnet")
.about("Starts a testnet validator using INSECURE, predicatable private keys, based off the canonical \
validator index. ONLY USE FOR TESTING PURPOSES!")
.arg(
Arg::with_name("bootstrap")
.short("b")
.long("bootstrap")
.help("Connect to the RPC server to download the eth2_config via the HTTP API.")
)
.subcommand(SubCommand::with_name("insecure")
.about("Uses the standard, predicatable `interop` keygen method to produce a range \
of predicatable private keys and starts performing their validator duties.")
.arg(Arg::with_name("first_validator")
.value_name("VALIDATOR_INDEX")
.required(true)
.help("The first validator public key to be generated for this client."))
.arg(Arg::with_name("validator_count")
.value_name("COUNT")
.required(true)
.help("The number of validators."))
)
.subcommand(SubCommand::with_name("interop-yaml")
.about("Loads plain-text secret keys from YAML files. Expects the interop format defined
in the ethereum/eth2.0-pm repo.")
.arg(Arg::with_name("path")
.value_name("PATH")
.required(true)
.help("Path to a YAML file."))
)
)
.subcommand(SubCommand::with_name("sign_block")
.about("Connects to the beacon server, requests a new block (after providing reveal),\
and prints the signed block to standard out")
.arg(Arg::with_name("validator")
.value_name("VALIDATOR")
.required(true)
.help("The pubkey of the validator that should sign the block.")
)
)
.get_matches();
let drain = match matches.value_of("debug-level") {
Some("info") => drain.filter_level(Level::Info),
Some("debug") => drain.filter_level(Level::Debug),
Some("trace") => drain.filter_level(Level::Trace),
Some("warn") => drain.filter_level(Level::Warning),
Some("error") => drain.filter_level(Level::Error),
Some("crit") => drain.filter_level(Level::Critical),
_ => unreachable!("guarded by clap"),
};
let mut log = slog::Logger::root(drain.fuse(), o!());
if std::mem::size_of::<usize>() != 8 {
crit!(
log,
"Lighthouse only supports 64bit CPUs";
"detected" => format!("{}bit", std::mem::size_of::<usize>() * 8)
);
}
let (client_config, eth2_config) = match get_configs(&matches, &mut log) {
Ok(tuple) => tuple,
Err(e) => {
crit!(
log,
"Unable to initialize configuration";
"error" => e
);
return;
}
};
info!(
log,
"Starting validator client";
"datadir" => client_config.full_data_dir().expect("Unable to find datadir").to_str(),
);
let result = match eth2_config.spec_constants.as_str() {
"mainnet" => ValidatorService::<ValidatorServiceClient, Keypair, MainnetEthSpec>::start(
client_config,
eth2_config,
log.clone(),
),
"minimal" => ValidatorService::<ValidatorServiceClient, Keypair, MinimalEthSpec>::start(
client_config,
eth2_config,
log.clone(),
),
"interop" => ValidatorService::<ValidatorServiceClient, Keypair, InteropEthSpec>::start(
client_config,
eth2_config,
log.clone(),
),
other => {
crit!(log, "Unknown spec constants"; "title" => other);
return;
}
};
// start the validator service.
// this specifies the GRPC and signer type to use as the duty manager beacon node.
match result {
Ok(_) => info!(log, "Validator client shutdown successfully."),
Err(e) => crit!(log, "Validator client exited with error"; "error" => e.to_string()),
}
}
/// Parses the CLI arguments and attempts to load the client and eth2 configuration.
///
/// This is not a pure function, it reads from disk and may contact network servers.
pub fn get_configs(
cli_args: &ArgMatches,
mut log: &mut Logger,
) -> Result<(ClientConfig, Eth2Config)> {
let mut client_config = ClientConfig::default();
client_config.apply_cli_args(&cli_args, &mut log)?;
if let Some(server) = cli_args.value_of("server") {
client_config.server = server.to_string();
}
if let Some(port) = cli_args.value_of("server-http-port") {
client_config.server_http_port = port
.parse::<u16>()
.map_err(|e| format!("Unable to parse HTTP port: {:?}", e))?;
}
if let Some(port) = cli_args.value_of("server-grpc-port") {
client_config.server_grpc_port = port
.parse::<u16>()
.map_err(|e| format!("Unable to parse gRPC port: {:?}", e))?;
}
info!(
*log,
"Beacon node connection info";
"grpc_port" => client_config.server_grpc_port,
"http_port" => client_config.server_http_port,
"server" => &client_config.server,
);
let (client_config, eth2_config) = match cli_args.subcommand() {
("testnet", Some(sub_cli_args)) => {
if cli_args.is_present("eth2-config") && sub_cli_args.is_present("bootstrap") {
return Err(
"Cannot specify --eth2-config and --bootstrap as it may result \
in ambiguity."
.into(),
);
}
process_testnet_subcommand(sub_cli_args, client_config, log)
}
_ => return Err("You must use the testnet command. See '--help'.".into()),
}?;
Ok((client_config, eth2_config))
}
/// Parses the `testnet` CLI subcommand.
///
/// This is not a pure function, it reads from disk and may contact network servers.
fn process_testnet_subcommand(
cli_args: &ArgMatches,
mut client_config: ClientConfig,
log: &Logger,
) -> Result<(ClientConfig, Eth2Config)> {
let eth2_config = if cli_args.is_present("bootstrap") {
info!(log, "Connecting to bootstrap server");
let bootstrapper = Bootstrapper::connect(
format!(
"http://{}:{}",
client_config.server, client_config.server_http_port
),
&log,
)?;
let eth2_config = bootstrapper.eth2_config()?;
info!(
log,
"Bootstrapped eth2 config via HTTP";
"slot_time_millis" => eth2_config.spec.milliseconds_per_slot,
"spec" => &eth2_config.spec_constants,
);
eth2_config
} else {
match cli_args.value_of("spec") {
Some("mainnet") => Eth2Config::mainnet(),
Some("minimal") => Eth2Config::minimal(),
Some("interop") => Eth2Config::interop(),
_ => return Err("No --spec flag provided. See '--help'.".into()),
}
};
client_config.key_source = match cli_args.subcommand() {
("insecure", Some(sub_cli_args)) => {
let first = sub_cli_args
.value_of("first_validator")
.ok_or_else(|| "No first validator supplied")?
.parse::<usize>()
.map_err(|e| format!("Unable to parse first validator: {:?}", e))?;
let count = sub_cli_args
.value_of("validator_count")
.ok_or_else(|| "No validator count supplied")?
.parse::<usize>()
.map_err(|e| format!("Unable to parse validator count: {:?}", e))?;
info!(
log,
"Generating unsafe testing keys";
"first_validator" => first,
"count" => count
);
KeySource::TestingKeypairRange(first..first + count)
}
("interop-yaml", Some(sub_cli_args)) => {
let path = sub_cli_args
.value_of("path")
.ok_or_else(|| "No yaml path supplied")?
.parse::<PathBuf>()
.map_err(|e| format!("Unable to parse yaml path: {:?}", e))?;
info!(
log,
"Loading keypairs from interop YAML format";
"path" => format!("{:?}", path),
);
KeySource::YamlKeypairs(path)
}
_ => KeySource::Disk,
};
Ok((client_config, eth2_config))
}

109
validator_client/src/service.rs
View File

@ -17,6 +17,7 @@ use crate::signer::Signer;
use bls::Keypair;
use eth2_config::Eth2Config;
use grpcio::{ChannelBuilder, EnvBuilder};
use parking_lot::RwLock;
use protos::services::Empty;
use protos::services_grpc::{
AttestationServiceClient, BeaconBlockServiceClient, BeaconNodeServiceClient,
@ -26,18 +27,9 @@ use slog::{crit, error, info, trace, warn};
use slot_clock::{SlotClock, SystemTimeSlotClock};
use std::marker::PhantomData;
use std::sync::Arc;
use std::sync::RwLock;
use std::time::{Duration, Instant};
use tokio::prelude::*;
use tokio::runtime::Builder;
use tokio::timer::Interval;
use tokio_timer::clock::Clock;
use std::time::Duration;
use types::{ChainSpec, Epoch, EthSpec, Fork, Slot};
/// A fixed amount of time after a slot to perform operations. This gives the node time to complete
/// per-slot processes.
const TIME_DELAY_FROM_SLOT: Duration = Duration::from_millis(100);
/// The validator service. This is the main thread that executes and maintains validator
/// duties.
//TODO: Generalize the BeaconNode types to use testing
@ -45,12 +37,12 @@ pub struct Service<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpe
/// The node's current fork version we are processing on.
fork: Fork,
/// The slot clock for this service.
slot_clock: SystemTimeSlotClock,
pub slot_clock: SystemTimeSlotClock,
/// The slot that is currently, or was previously processed by the service.
current_slot: Option<Slot>,
current_slot: RwLock<Option<Slot>>,
slots_per_epoch: u64,
/// The chain specification for this clients instance.
spec: Arc<ChainSpec>,
pub spec: Arc<ChainSpec>,
/// The duties manager which maintains the state of when to perform actions.
duties_manager: Arc<DutiesManager<B, S>>,
// GRPC Clients
@ -63,12 +55,12 @@ pub struct Service<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpe
_phantom: PhantomData<E>,
}
impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B, S, E> {
impl<E: EthSpec> Service<ValidatorServiceClient, Keypair, E> {
/// Initial connection to the beacon node to determine its properties.
///
/// This tries to connect to a beacon node. Once connected, it initialised the gRPC clients
/// and returns an instance of the service.
fn initialize_service(
pub fn initialize_service(
client_config: ValidatorConfig,
eth2_config: Eth2Config,
log: slog::Logger,
@ -195,7 +187,7 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
Ok(Service {
fork,
slot_clock,
current_slot: None,
current_slot: RwLock::new(None),
slots_per_epoch,
spec,
duties_manager,
@ -205,78 +197,12 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
_phantom: PhantomData,
})
}
/// Initialise the service then run the core thread.
// TODO: Improve handling of generic BeaconNode types, to stub grpcClient
pub fn start(
client_config: ValidatorConfig,
eth2_config: Eth2Config,
log: slog::Logger,
) -> error_chain::Result<()> {
// connect to the node and retrieve its properties and initialize the gRPC clients
let mut service = Service::<ValidatorServiceClient, Keypair, E>::initialize_service(
client_config,
eth2_config,
log.clone(),
)?;
// we have connected to a node and established its parameters. Spin up the core service
// set up the validator service runtime
let mut runtime = Builder::new()
.clock(Clock::system())
.name_prefix("validator-client-")
.build()
.map_err(|e| format!("Tokio runtime failed: {}", e))?;
let duration_to_next_slot = service
.slot_clock
.duration_to_next_slot()
.ok_or_else::<error_chain::Error, _>(|| {
"Unable to determine duration to next slot. Exiting.".into()
})?;
// set up the validator work interval - start at next slot and proceed every slot
let interval = {
// Set the interval to start at the next slot, and every slot after
let slot_duration = Duration::from_millis(service.spec.milliseconds_per_slot);
//TODO: Handle checked add correctly
Interval::new(Instant::now() + duration_to_next_slot, slot_duration)
};
if service.slot_clock.now().is_none() {
warn!(
log,
"Starting node prior to genesis";
);
}
info!(
log,
"Waiting for next slot";
"seconds_to_wait" => duration_to_next_slot.as_secs()
);
/* kick off the core service */
runtime.block_on(
interval
.for_each(move |_| {
// wait for node to process
std::thread::sleep(TIME_DELAY_FROM_SLOT);
// if a non-fatal error occurs, proceed to the next slot.
let _ignore_error = service.per_slot_execution();
// completed a slot process
Ok(())
})
.map_err(|e| format!("Service thread failed: {:?}", e)),
)?;
// validator client exited
Ok(())
}
impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B, S, E> {
/// The execution logic that runs every slot.
// Errors are logged to output, and core execution continues unless fatal errors occur.
fn per_slot_execution(&mut self) -> error_chain::Result<()> {
pub fn per_slot_execution(&self) -> error_chain::Result<()> {
/* get the new current slot and epoch */
self.update_current_slot()?;
@ -295,7 +221,7 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
}
/// Updates the known current slot and epoch.
fn update_current_slot(&mut self) -> error_chain::Result<()> {
fn update_current_slot(&self) -> error_chain::Result<()> {
let wall_clock_slot = self
.slot_clock
.now()
@ -304,11 +230,12 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
})?;
let wall_clock_epoch = wall_clock_slot.epoch(self.slots_per_epoch);
let mut current_slot = self.current_slot.write();
// this is a non-fatal error. If the slot clock repeats, the node could
// have been slow to process the previous slot and is now duplicating tasks.
// We ignore duplicated but raise a critical error.
if let Some(current_slot) = self.current_slot {
if let Some(current_slot) = *current_slot {
if wall_clock_slot <= current_slot {
crit!(
self.log,
@ -317,17 +244,18 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
return Err("Duplicate slot".into());
}
}
self.current_slot = Some(wall_clock_slot);
*current_slot = Some(wall_clock_slot);
info!(self.log, "Processing"; "slot" => wall_clock_slot.as_u64(), "epoch" => wall_clock_epoch.as_u64());
Ok(())
}
/// For all known validator keypairs, update any known duties from the beacon node.
fn check_for_duties(&mut self) {
fn check_for_duties(&self) {
let cloned_manager = self.duties_manager.clone();
let cloned_log = self.log.clone();
let current_epoch = self
.current_slot
.read()
.expect("The current slot must be updated before checking for duties")
.epoch(self.slots_per_epoch);
@ -349,9 +277,10 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
}
/// If there are any duties to process, spawn a separate thread and perform required actions.
fn process_duties(&mut self) {
fn process_duties(&self) {
if let Some(work) = self.duties_manager.get_current_work(
self.current_slot
.read()
.expect("The current slot must be updated before processing duties"),
) {
trace!(
@ -368,6 +297,7 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
let fork = self.fork.clone();
let slot = self
.current_slot
.read()
.expect("The current slot must be updated before processing duties");
let spec = self.spec.clone();
let beacon_node = self.beacon_block_client.clone();
@ -399,6 +329,7 @@ impl<B: BeaconNodeDuties + 'static, S: Signer + 'static, E: EthSpec> Service<B,
// spawns a thread to produce and sign an attestation
let slot = self
.current_slot
.read()
.expect("The current slot must be updated before processing duties");
let signers = self.duties_manager.signers.clone(); // this is an arc
let fork = self.fork.clone();