Merged Age's changes and ripped out heaps of now obsolete stuff in the validator client.

- Replaced most instances of PublicKey with KeyPair, since they need to be passed into each validator thread now.
 - Pulled out a bunch of FreeAttestations, and replaced with regular Attestations (as per Paul's suggestion)
 - Started generalising pubkeys to 'signers' (though they are still just Keypairs)
 - Added validator_index into a few structs where relevant
 - Removed the SlotClock and DutiesReader from the BlockProducer and Attester services, since this logic is now abstracted to the higher level process.
 - Added a Hash trait to the Keypair (rather than just pubkey) which assumes the Pubkey uniquely defines it.
This commit is contained in:
Luke Anderson 2019-03-28 15:50:57 +11:00
commit c9e8fe53bc
No known key found for this signature in database
GPG Key ID: 44408169EC61E228
53 changed files with 3198 additions and 616 deletions

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@ -8,7 +8,9 @@ before_install:
- sudo chown -R $USER /usr/local/include/google - sudo chown -R $USER /usr/local/include/google
script: script:
- cargo build --verbose --all - cargo build --verbose --all
- cargo build --verbose --release --all
- cargo test --verbose --all - cargo test --verbose --all
- cargo test --verbose --release --all
- cargo fmt --all -- --check - cargo fmt --all -- --check
rust: rust:
- stable - stable

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@ -26,7 +26,10 @@ pub enum ValidBlock {
#[derive(Debug, PartialEq)] #[derive(Debug, PartialEq)]
pub enum InvalidBlock { pub enum InvalidBlock {
/// The block slot is greater than the present slot. /// The block slot is greater than the present slot.
FutureSlot, FutureSlot {
present_slot: Slot,
block_slot: Slot,
},
/// The block state_root does not match the generated state. /// The block state_root does not match the generated state.
StateRootMismatch, StateRootMismatch,
/// The blocks parent_root is unknown. /// The blocks parent_root is unknown.
@ -46,6 +49,35 @@ pub enum BlockProcessingOutcome {
InvalidBlock(InvalidBlock), InvalidBlock(InvalidBlock),
} }
impl BlockProcessingOutcome {
/// Returns `true` if the block was objectively invalid and we should disregard the peer who
/// sent it.
pub fn is_invalid(&self) -> bool {
match self {
BlockProcessingOutcome::ValidBlock(_) => false,
BlockProcessingOutcome::InvalidBlock(r) => match r {
InvalidBlock::FutureSlot { .. } => true,
InvalidBlock::StateRootMismatch => true,
InvalidBlock::ParentUnknown => false,
InvalidBlock::SlotProcessingError(_) => false,
InvalidBlock::PerBlockProcessingError(e) => match e {
BlockProcessingError::Invalid(_) => true,
BlockProcessingError::BeaconStateError(_) => false,
},
},
}
}
/// Returns `true` if the block was successfully processed and can be removed from any import
/// queues or temporary storage.
pub fn sucessfully_processed(&self) -> bool {
match self {
BlockProcessingOutcome::ValidBlock(_) => true,
_ => false,
}
}
}
pub struct BeaconChain<T: ClientDB + Sized, U: SlotClock, F: ForkChoice> { pub struct BeaconChain<T: ClientDB + Sized, U: SlotClock, F: ForkChoice> {
pub block_store: Arc<BeaconBlockStore<T>>, pub block_store: Arc<BeaconBlockStore<T>>,
pub state_store: Arc<BeaconStateStore<T>>, pub state_store: Arc<BeaconStateStore<T>>,
@ -122,6 +154,126 @@ where
}) })
} }
/// Returns the beacon block body for each beacon block root in `roots`.
///
/// Fails if any root in `roots` does not have a corresponding block.
pub fn get_block_bodies(&self, roots: &[Hash256]) -> Result<Vec<BeaconBlockBody>, Error> {
let bodies: Result<Vec<BeaconBlockBody>, _> = roots
.iter()
.map(|root| match self.get_block(root)? {
Some(block) => Ok(block.body),
None => Err(Error::DBInconsistent("Missing block".into())),
})
.collect();
Ok(bodies?)
}
/// Returns the beacon block header for each beacon block root in `roots`.
///
/// Fails if any root in `roots` does not have a corresponding block.
pub fn get_block_headers(&self, roots: &[Hash256]) -> Result<Vec<BeaconBlockHeader>, Error> {
let headers: Result<Vec<BeaconBlockHeader>, _> = roots
.iter()
.map(|root| match self.get_block(root)? {
Some(block) => Ok(block.block_header()),
None => Err(Error::DBInconsistent("Missing block".into())),
})
.collect();
Ok(headers?)
}
/// Returns `count `beacon block roots, starting from `start_slot` with an
/// interval of `skip` slots between each root.
///
/// ## Errors:
///
/// - `SlotOutOfBounds`: Unable to return the full specified range.
/// - `SlotOutOfBounds`: Unable to load a state from the DB.
/// - `SlotOutOfBounds`: Start slot is higher than the first slot.
/// - Other: BeaconState` is inconsistent.
pub fn get_block_roots(
&self,
earliest_slot: Slot,
count: usize,
skip: usize,
) -> Result<Vec<Hash256>, Error> {
let spec = &self.spec;
let step_by = Slot::from(skip + 1);
let mut roots: Vec<Hash256> = vec![];
// The state for reading block roots. Will be updated with an older state if slots go too
// far back in history.
let mut state = self.state.read().clone();
// The final slot in this series, will be reduced by `skip` each loop iteration.
let mut slot = earliest_slot + Slot::from(count * (skip + 1)) - 1;
// If the highest slot requested is that of the current state insert the root of the
// head block, unless the head block's slot is not matching.
if slot == state.slot && self.head().beacon_block.slot == slot {
roots.push(self.head().beacon_block_root);
slot -= step_by;
} else if slot >= state.slot {
return Err(BeaconStateError::SlotOutOfBounds.into());
}
loop {
// If the slot is within the range of the current state's block roots, append the root
// to the output vec.
//
// If we get `SlotOutOfBounds` error, load the oldest available historic
// state from the DB.
match state.get_block_root(slot, spec) {
Ok(root) => {
if slot < earliest_slot {
break;
} else {
roots.push(*root);
slot -= step_by;
}
}
Err(BeaconStateError::SlotOutOfBounds) => {
// Read the earliest historic state in the current slot.
let earliest_historic_slot =
state.slot - Slot::from(spec.slots_per_historical_root);
// Load the earlier state from disk.
let new_state_root = state.get_state_root(earliest_historic_slot, spec)?;
// Break if the DB is unable to load the state.
state = match self.state_store.get_deserialized(&new_state_root) {
Ok(Some(state)) => state,
_ => break,
}
}
Err(e) => return Err(e.into()),
};
}
// Return the results if they pass a sanity check.
if (slot <= earliest_slot) && (roots.len() == count) {
// Reverse the ordering of the roots. We extracted them in reverse order to make it
// simpler to lookup historic states.
//
// This is a potential optimisation target.
Ok(roots.iter().rev().cloned().collect())
} else {
Err(BeaconStateError::SlotOutOfBounds.into())
}
}
/// Returns the block at the given root, if any.
///
/// ## Errors
///
/// May return a database error.
pub fn get_block(&self, block_root: &Hash256) -> Result<Option<BeaconBlock>, Error> {
Ok(self.block_store.get_deserialized(block_root)?)
}
/// Update the canonical head to some new values. /// Update the canonical head to some new values.
pub fn update_canonical_head( pub fn update_canonical_head(
&self, &self,
@ -153,6 +305,49 @@ where
self.canonical_head.read() self.canonical_head.read()
} }
/// Updates the canonical `BeaconState` with the supplied state.
///
/// Advances the chain forward to the present slot. This method is better than just setting
/// state and calling `catchup_state` as it will not result in an old state being installed and
/// then having it iteratively updated -- in such a case it's possible for another thread to
/// find the state at an old slot.
pub fn update_state(&self, mut state: BeaconState) -> Result<(), Error> {
let latest_block_header = self.head().beacon_block.block_header();
let present_slot = match self.slot_clock.present_slot() {
Ok(Some(slot)) => slot,
_ => return Err(Error::UnableToReadSlot),
};
// If required, transition the new state to the present slot.
for _ in state.slot.as_u64()..present_slot.as_u64() {
per_slot_processing(&mut state, &latest_block_header, &self.spec)?;
}
*self.state.write() = state;
Ok(())
}
/// Ensures the current canonical `BeaconState` has been transitioned to match the `slot_clock`.
pub fn catchup_state(&self) -> Result<(), Error> {
let latest_block_header = self.head().beacon_block.block_header();
let present_slot = match self.slot_clock.present_slot() {
Ok(Some(slot)) => slot,
_ => return Err(Error::UnableToReadSlot),
};
let mut state = self.state.write();
// If required, transition the new state to the present slot.
for _ in state.slot.as_u64()..present_slot.as_u64() {
per_slot_processing(&mut *state, &latest_block_header, &self.spec)?;
}
Ok(())
}
/// Update the justified head to some new values. /// Update the justified head to some new values.
pub fn update_finalized_head( pub fn update_finalized_head(
&self, &self,
@ -176,28 +371,6 @@ where
self.finalized_head.read() self.finalized_head.read()
} }
/// Advance the `self.state` `BeaconState` to the supplied slot.
///
/// This will perform per_slot and per_epoch processing as required.
///
/// The `previous_block_root` will be set to the root of the current head block (as determined
/// by the fork-choice rule).
///
/// It is important to note that this is _not_ the state corresponding to the canonical head
/// block, instead it is that state which may or may not have had additional per slot/epoch
/// processing applied to it.
pub fn advance_state(&self, slot: Slot) -> Result<(), SlotProcessingError> {
let state_slot = self.state.read().slot;
let latest_block_header = self.head().beacon_block.block_header();
for _ in state_slot.as_u64()..slot.as_u64() {
per_slot_processing(&mut *self.state.write(), &latest_block_header, &self.spec)?;
}
Ok(())
}
/// Returns the validator index (if any) for the given public key. /// Returns the validator index (if any) for the given public key.
/// ///
/// Information is retrieved from the present `beacon_state.validator_registry`. /// Information is retrieved from the present `beacon_state.validator_registry`.
@ -246,7 +419,10 @@ where
/// Information is read from the present `beacon_state` shuffling, so only information from the /// Information is read from the present `beacon_state` shuffling, so only information from the
/// present and prior epoch is available. /// present and prior epoch is available.
pub fn block_proposer(&self, slot: Slot) -> Result<usize, BeaconStateError> { pub fn block_proposer(&self, slot: Slot) -> Result<usize, BeaconStateError> {
trace!("BeaconChain::block_proposer: slot: {}", slot); self.state
.write()
.build_epoch_cache(RelativeEpoch::Current, &self.spec)?;
let index = self.state.read().get_beacon_proposer_index( let index = self.state.read().get_beacon_proposer_index(
slot, slot,
RelativeEpoch::Current, RelativeEpoch::Current,
@ -555,6 +731,11 @@ where
} }
} }
/// Returns `true` if the given block root has not been processed.
pub fn is_new_block_root(&self, beacon_block_root: &Hash256) -> Result<bool, Error> {
Ok(!self.block_store.exists(beacon_block_root)?)
}
/// Accept some block and attempt to add it to block DAG. /// Accept some block and attempt to add it to block DAG.
/// ///
/// Will accept blocks from prior slots, however it will reject any block from a future slot. /// Will accept blocks from prior slots, however it will reject any block from a future slot.
@ -567,7 +748,10 @@ where
if block.slot > present_slot { if block.slot > present_slot {
return Ok(BlockProcessingOutcome::InvalidBlock( return Ok(BlockProcessingOutcome::InvalidBlock(
InvalidBlock::FutureSlot, InvalidBlock::FutureSlot {
present_slot,
block_slot: block.slot,
},
)); ));
} }
@ -594,10 +778,10 @@ where
// TODO: check the block proposer signature BEFORE doing a state transition. This will // TODO: check the block proposer signature BEFORE doing a state transition. This will
// significantly lower exposure surface to DoS attacks. // significantly lower exposure surface to DoS attacks.
// Transition the parent state to the present slot. // Transition the parent state to the block slot.
let mut state = parent_state; let mut state = parent_state;
let previous_block_header = parent_block.block_header(); let previous_block_header = parent_block.block_header();
for _ in state.slot.as_u64()..present_slot.as_u64() { for _ in state.slot.as_u64()..block.slot.as_u64() {
if let Err(e) = per_slot_processing(&mut state, &previous_block_header, &self.spec) { if let Err(e) = per_slot_processing(&mut state, &previous_block_header, &self.spec) {
return Ok(BlockProcessingOutcome::InvalidBlock( return Ok(BlockProcessingOutcome::InvalidBlock(
InvalidBlock::SlotProcessingError(e), InvalidBlock::SlotProcessingError(e),
@ -643,8 +827,9 @@ where
// run instead. // run instead.
if self.head().beacon_block_root == parent_block_root { if self.head().beacon_block_root == parent_block_root {
self.update_canonical_head(block.clone(), block_root, state.clone(), state_root); self.update_canonical_head(block.clone(), block_root, state.clone(), state_root);
// Update the local state variable.
*self.state.write() = state; // Update the canonical `BeaconState`.
self.update_state(state)?;
} }
Ok(BlockProcessingOutcome::ValidBlock(ValidBlock::Processed)) Ok(BlockProcessingOutcome::ValidBlock(ValidBlock::Processed))
@ -662,6 +847,8 @@ where
let mut state = self.state.read().clone(); let mut state = self.state.read().clone();
state.build_epoch_cache(RelativeEpoch::Current, &self.spec)?;
trace!("Finding attestations for new block..."); trace!("Finding attestations for new block...");
let attestations = self let attestations = self
@ -732,7 +919,10 @@ where
.ok_or_else(|| Error::MissingBeaconState(block.state_root))?; .ok_or_else(|| Error::MissingBeaconState(block.state_root))?;
let state_root = state.canonical_root(); let state_root = state.canonical_root();
self.update_canonical_head(block, block_root, state, state_root); self.update_canonical_head(block, block_root, state.clone(), state_root);
// Update the canonical `BeaconState`.
self.update_state(state)?;
} }
Ok(()) Ok(())

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@ -3,7 +3,7 @@ use types::{BeaconBlock, BeaconState, Hash256};
/// Represents some block and it's associated state. Generally, this will be used for tracking the /// Represents some block and it's associated state. Generally, this will be used for tracking the
/// head, justified head and finalized head. /// head, justified head and finalized head.
#[derive(Clone, Serialize)] #[derive(Clone, Serialize, PartialEq, Debug)]
pub struct CheckPoint { pub struct CheckPoint {
pub beacon_block: BeaconBlock, pub beacon_block: BeaconBlock,
pub beacon_block_root: Hash256, pub beacon_block_root: Hash256,

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@ -1,5 +1,6 @@
use fork_choice::ForkChoiceError; use fork_choice::ForkChoiceError;
use state_processing::BlockProcessingError; use state_processing::BlockProcessingError;
use state_processing::SlotProcessingError;
use types::*; use types::*;
macro_rules! easy_from_to { macro_rules! easy_from_to {
@ -16,18 +17,24 @@ macro_rules! easy_from_to {
pub enum BeaconChainError { pub enum BeaconChainError {
InsufficientValidators, InsufficientValidators,
BadRecentBlockRoots, BadRecentBlockRoots,
UnableToReadSlot,
BeaconStateError(BeaconStateError), BeaconStateError(BeaconStateError),
DBInconsistent(String), DBInconsistent(String),
DBError(String), DBError(String),
ForkChoiceError(ForkChoiceError), ForkChoiceError(ForkChoiceError),
MissingBeaconBlock(Hash256), MissingBeaconBlock(Hash256),
MissingBeaconState(Hash256), MissingBeaconState(Hash256),
SlotProcessingError(SlotProcessingError),
} }
easy_from_to!(SlotProcessingError, BeaconChainError);
#[derive(Debug, PartialEq)] #[derive(Debug, PartialEq)]
pub enum BlockProductionError { pub enum BlockProductionError {
UnableToGetBlockRootFromState, UnableToGetBlockRootFromState,
BlockProcessingError(BlockProcessingError), BlockProcessingError(BlockProcessingError),
BeaconStateError(BeaconStateError),
} }
easy_from_to!(BlockProcessingError, BlockProductionError); easy_from_to!(BlockProcessingError, BlockProductionError);
easy_from_to!(BeaconStateError, BlockProductionError);

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@ -3,10 +3,12 @@ mod beacon_chain;
mod checkpoint; mod checkpoint;
mod errors; mod errors;
pub mod initialise; pub mod initialise;
pub mod test_utils;
pub use self::beacon_chain::{BeaconChain, BlockProcessingOutcome, InvalidBlock, ValidBlock}; pub use self::beacon_chain::{BeaconChain, BlockProcessingOutcome, InvalidBlock, ValidBlock};
pub use self::checkpoint::CheckPoint; pub use self::checkpoint::CheckPoint;
pub use self::errors::BeaconChainError; pub use self::errors::BeaconChainError;
pub use attestation_aggregator::Outcome as AggregationOutcome;
pub use db; pub use db;
pub use fork_choice; pub use fork_choice;
pub use parking_lot; pub use parking_lot;

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@ -0,0 +1,3 @@
mod testing_beacon_chain_builder;
pub use testing_beacon_chain_builder::TestingBeaconChainBuilder;

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@ -0,0 +1,50 @@
pub use crate::{BeaconChain, BeaconChainError, CheckPoint};
use db::{
stores::{BeaconBlockStore, BeaconStateStore},
MemoryDB,
};
use fork_choice::BitwiseLMDGhost;
use slot_clock::TestingSlotClock;
use ssz::TreeHash;
use std::sync::Arc;
use types::test_utils::TestingBeaconStateBuilder;
use types::*;
type TestingBeaconChain = BeaconChain<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>;
pub struct TestingBeaconChainBuilder {
state_builder: TestingBeaconStateBuilder,
}
impl TestingBeaconChainBuilder {
pub fn build(self, spec: &ChainSpec) -> TestingBeaconChain {
let db = Arc::new(MemoryDB::open());
let block_store = Arc::new(BeaconBlockStore::new(db.clone()));
let state_store = Arc::new(BeaconStateStore::new(db.clone()));
let slot_clock = TestingSlotClock::new(spec.genesis_slot.as_u64());
let fork_choice = BitwiseLMDGhost::new(block_store.clone(), state_store.clone());
let (genesis_state, _keypairs) = self.state_builder.build();
let mut genesis_block = BeaconBlock::empty(&spec);
genesis_block.state_root = Hash256::from_slice(&genesis_state.hash_tree_root());
// Create the Beacon Chain
BeaconChain::from_genesis(
state_store.clone(),
block_store.clone(),
slot_clock,
genesis_state,
genesis_block,
spec.clone(),
fork_choice,
)
.unwrap()
}
}
impl From<TestingBeaconStateBuilder> for TestingBeaconChainBuilder {
fn from(state_builder: TestingBeaconStateBuilder) -> TestingBeaconChainBuilder {
TestingBeaconChainBuilder { state_builder }
}
}

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@ -15,6 +15,8 @@ use std::iter::FromIterator;
use std::sync::Arc; use std::sync::Arc;
use types::{test_utils::TestingBeaconStateBuilder, *}; use types::{test_utils::TestingBeaconStateBuilder, *};
type TestingBeaconChain = BeaconChain<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>;
/// The beacon chain harness simulates a single beacon node with `validator_count` validators connected /// The beacon chain harness simulates a single beacon node with `validator_count` validators connected
/// to it. Each validator is provided a borrow to the beacon chain, where it may read /// to it. Each validator is provided a borrow to the beacon chain, where it may read
/// information and submit blocks/attestations for processing. /// information and submit blocks/attestations for processing.
@ -23,7 +25,7 @@ use types::{test_utils::TestingBeaconStateBuilder, *};
/// is not useful for testing that multiple beacon nodes can reach consensus. /// is not useful for testing that multiple beacon nodes can reach consensus.
pub struct BeaconChainHarness { pub struct BeaconChainHarness {
pub db: Arc<MemoryDB>, pub db: Arc<MemoryDB>,
pub beacon_chain: Arc<BeaconChain<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>>, pub beacon_chain: Arc<TestingBeaconChain>,
pub block_store: Arc<BeaconBlockStore<MemoryDB>>, pub block_store: Arc<BeaconBlockStore<MemoryDB>>,
pub state_store: Arc<BeaconStateStore<MemoryDB>>, pub state_store: Arc<BeaconStateStore<MemoryDB>>,
pub validators: Vec<ValidatorHarness>, pub validators: Vec<ValidatorHarness>,
@ -36,19 +38,39 @@ impl BeaconChainHarness {
/// - A keypair, `BlockProducer` and `Attester` for each validator. /// - A keypair, `BlockProducer` and `Attester` for each validator.
/// - A new BeaconChain struct where the given validators are in the genesis. /// - A new BeaconChain struct where the given validators are in the genesis.
pub fn new(spec: ChainSpec, validator_count: usize) -> Self { pub fn new(spec: ChainSpec, validator_count: usize) -> Self {
let state_builder =
TestingBeaconStateBuilder::from_default_keypairs_file_if_exists(validator_count, &spec);
Self::from_beacon_state_builder(state_builder, spec)
}
pub fn from_beacon_state_builder(
state_builder: TestingBeaconStateBuilder,
spec: ChainSpec,
) -> Self {
let db = Arc::new(MemoryDB::open()); let db = Arc::new(MemoryDB::open());
let block_store = Arc::new(BeaconBlockStore::new(db.clone())); let block_store = Arc::new(BeaconBlockStore::new(db.clone()));
let state_store = Arc::new(BeaconStateStore::new(db.clone())); let state_store = Arc::new(BeaconStateStore::new(db.clone()));
let slot_clock = TestingSlotClock::new(spec.genesis_slot.as_u64()); let slot_clock = TestingSlotClock::new(spec.genesis_slot.as_u64());
let fork_choice = BitwiseLMDGhost::new(block_store.clone(), state_store.clone()); let fork_choice = BitwiseLMDGhost::new(block_store.clone(), state_store.clone());
let state_builder = let (mut genesis_state, keypairs) = state_builder.build();
TestingBeaconStateBuilder::from_default_keypairs_file_if_exists(validator_count, &spec);
let (genesis_state, keypairs) = state_builder.build();
let mut genesis_block = BeaconBlock::empty(&spec); let mut genesis_block = BeaconBlock::empty(&spec);
genesis_block.state_root = Hash256::from_slice(&genesis_state.hash_tree_root()); genesis_block.state_root = Hash256::from_slice(&genesis_state.hash_tree_root());
genesis_state
.build_epoch_cache(RelativeEpoch::Previous, &spec)
.unwrap();
genesis_state
.build_epoch_cache(RelativeEpoch::Current, &spec)
.unwrap();
genesis_state
.build_epoch_cache(RelativeEpoch::NextWithoutRegistryChange, &spec)
.unwrap();
genesis_state
.build_epoch_cache(RelativeEpoch::NextWithRegistryChange, &spec)
.unwrap();
// Create the Beacon Chain // Create the Beacon Chain
let beacon_chain = Arc::new( let beacon_chain = Arc::new(
BeaconChain::from_genesis( BeaconChain::from_genesis(
@ -109,7 +131,9 @@ impl BeaconChainHarness {
); );
self.beacon_chain.slot_clock.set_slot(slot.as_u64()); self.beacon_chain.slot_clock.set_slot(slot.as_u64());
self.beacon_chain.advance_state(slot).unwrap(); self.beacon_chain
.catchup_state()
.expect("Failed to catch state");
slot slot
} }
@ -183,14 +207,13 @@ impl BeaconChainHarness {
/// ///
/// This is the ideal scenario for the Beacon Chain, 100% honest participation from /// This is the ideal scenario for the Beacon Chain, 100% honest participation from
/// validators. /// validators.
pub fn advance_chain_with_block(&mut self) { pub fn advance_chain_with_block(&mut self) -> BeaconBlock {
self.increment_beacon_chain_slot(); self.increment_beacon_chain_slot();
// Produce a new block. // Produce a new block.
debug!("Producing block...");
let block = self.produce_block(); let block = self.produce_block();
debug!("Submitting block for processing..."); debug!("Submitting block for processing...");
match self.beacon_chain.process_block(block) { match self.beacon_chain.process_block(block.clone()) {
Ok(BlockProcessingOutcome::ValidBlock(_)) => {} Ok(BlockProcessingOutcome::ValidBlock(_)) => {}
other => panic!("block processing failed with {:?}", other), other => panic!("block processing failed with {:?}", other),
}; };
@ -210,6 +233,8 @@ impl BeaconChainHarness {
}); });
debug!("Free attestations processed."); debug!("Free attestations processed.");
block
} }
/// Signs a message using some validators secret key with the `Fork` info from the latest state /// Signs a message using some validators secret key with the `Fork` info from the latest state

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@ -8,8 +8,7 @@ use beacon_chain::BeaconChain;
use block_proposer::PollOutcome as BlockPollOutcome; use block_proposer::PollOutcome as BlockPollOutcome;
use block_proposer::{BlockProducer, Error as BlockPollError}; use block_proposer::{BlockProducer, Error as BlockPollError};
use db::MemoryDB; use db::MemoryDB;
use direct_beacon_node::DirectBeaconNode; use crate::direct_beacon_node::DirectBeaconNode;
use direct_duties::DirectDuties;
use fork_choice::BitwiseLMDGhost; use fork_choice::BitwiseLMDGhost;
use local_signer::LocalSigner; use local_signer::LocalSigner;
use slot_clock::TestingSlotClock; use slot_clock::TestingSlotClock;
@ -29,16 +28,12 @@ pub enum AttestationProduceError {
} }
type TestingBlockProducer = BlockProducer< type TestingBlockProducer = BlockProducer<
TestingSlotClock,
DirectBeaconNode<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>, DirectBeaconNode<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>,
DirectDuties<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>,
LocalSigner, LocalSigner,
>; >;
type TestingAttester = Attester< type TestingAttester = Attester<
TestingSlotClock,
DirectBeaconNode<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>, DirectBeaconNode<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>,
DirectDuties<MemoryDB, TestingSlotClock, BitwiseLMDGhost<MemoryDB>>,
LocalSigner, LocalSigner,
>; >;

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@ -46,7 +46,7 @@ impl<TClientType: ClientTypes> Client<TClientType> {
// TODO: Add beacon_chain reference to network parameters // TODO: Add beacon_chain reference to network parameters
let network_config = &config.net_conf; let network_config = &config.net_conf;
let network_logger = log.new(o!("Service" => "Network")); let network_logger = log.new(o!("Service" => "Network"));
let (network, _network_send) = NetworkService::new( let (network, network_send) = NetworkService::new(
beacon_chain.clone(), beacon_chain.clone(),
network_config, network_config,
executor, executor,
@ -59,6 +59,7 @@ impl<TClientType: ClientTypes> Client<TClientType> {
rpc_exit_signal = Some(rpc::start_server( rpc_exit_signal = Some(rpc::start_server(
&config.rpc_conf, &config.rpc_conf,
executor, executor,
network_send,
beacon_chain.clone(), beacon_chain.clone(),
&log, &log,
)); ));

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@ -5,6 +5,7 @@ authors = ["Age Manning <Age@AgeManning.com>"]
edition = "2018" edition = "2018"
[dependencies] [dependencies]
beacon_chain = { path = "../beacon_chain" }
# SigP repository until PR is merged # SigP repository until PR is merged
libp2p = { git = "https://github.com/SigP/rust-libp2p", rev = "b3c32d9a821ae6cc89079499cc6e8a6bab0bffc3" } libp2p = { git = "https://github.com/SigP/rust-libp2p", rev = "b3c32d9a821ae6cc89079499cc6e8a6bab0bffc3" }
types = { path = "../../eth2/types" } types = { path = "../../eth2/types" }

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@ -1,3 +1,4 @@
use crate::rpc::methods::BlockRootSlot;
use crate::rpc::{RPCEvent, RPCMessage, Rpc}; use crate::rpc::{RPCEvent, RPCMessage, Rpc};
use crate::NetworkConfig; use crate::NetworkConfig;
use futures::prelude::*; use futures::prelude::*;
@ -12,8 +13,11 @@ use libp2p::{
tokio_io::{AsyncRead, AsyncWrite}, tokio_io::{AsyncRead, AsyncWrite},
NetworkBehaviour, PeerId, NetworkBehaviour, PeerId,
}; };
use slog::{debug, o}; use slog::{debug, o, warn};
use types::Topic; use ssz::{ssz_encode, Decodable, DecodeError, Encodable, SszStream};
use ssz_derive::{Decode, Encode};
use types::Attestation;
use types::{Topic, TopicHash};
/// Builds the network behaviour for the libp2p Swarm. /// Builds the network behaviour for the libp2p Swarm.
/// Implements gossipsub message routing. /// Implements gossipsub message routing.
@ -44,13 +48,33 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<GossipsubE
{ {
fn inject_event(&mut self, event: GossipsubEvent) { fn inject_event(&mut self, event: GossipsubEvent) {
match event { match event {
GossipsubEvent::Message(message) => { GossipsubEvent::Message(gs_msg) => {
let gs_message = String::from_utf8_lossy(&message.data); let pubsub_message = match PubsubMessage::ssz_decode(&gs_msg.data, 0) {
// TODO: Remove this type - debug only //TODO: Punish peer on error
self.events Err(e) => {
.push(BehaviourEvent::Message(gs_message.to_string())) warn!(
self.log,
"Received undecodable message from Peer {:?}", gs_msg.source
);
return;
}
Ok((msg, _index)) => msg,
};
self.events.push(BehaviourEvent::GossipMessage {
source: gs_msg.source,
topics: gs_msg.topics,
message: pubsub_message,
});
} }
_ => {} GossipsubEvent::Subscribed {
peer_id: _,
topic: _,
}
| GossipsubEvent::Unsubscribed {
peer_id: _,
topic: _,
} => {}
} }
} }
} }
@ -144,6 +168,14 @@ impl<TSubstream: AsyncRead + AsyncWrite> Behaviour<TSubstream> {
pub fn send_rpc(&mut self, peer_id: PeerId, rpc_event: RPCEvent) { pub fn send_rpc(&mut self, peer_id: PeerId, rpc_event: RPCEvent) {
self.serenity_rpc.send_rpc(peer_id, rpc_event); self.serenity_rpc.send_rpc(peer_id, rpc_event);
} }
/// Publishes a message on the pubsub (gossipsub) behaviour.
pub fn publish(&mut self, topics: Vec<Topic>, message: PubsubMessage) {
let message_bytes = ssz_encode(&message);
for topic in topics {
self.gossipsub.publish(topic, message_bytes.clone());
}
}
} }
/// The types of events than can be obtained from polling the behaviour. /// The types of events than can be obtained from polling the behaviour.
@ -152,5 +184,51 @@ pub enum BehaviourEvent {
PeerDialed(PeerId), PeerDialed(PeerId),
Identified(PeerId, IdentifyInfo), Identified(PeerId, IdentifyInfo),
// TODO: This is a stub at the moment // TODO: This is a stub at the moment
Message(String), GossipMessage {
source: PeerId,
topics: Vec<TopicHash>,
message: PubsubMessage,
},
}
/// Messages that are passed to and from the pubsub (Gossipsub) behaviour.
#[derive(Debug, Clone)]
pub enum PubsubMessage {
/// Gossipsub message providing notification of a new block.
Block(BlockRootSlot),
/// Gossipsub message providing notification of a new attestation.
Attestation(Attestation),
}
//TODO: Correctly encode/decode enums. Prefixing with integer for now.
impl Encodable for PubsubMessage {
fn ssz_append(&self, s: &mut SszStream) {
match self {
PubsubMessage::Block(block_gossip) => {
0u32.ssz_append(s);
block_gossip.ssz_append(s);
}
PubsubMessage::Attestation(attestation_gossip) => {
1u32.ssz_append(s);
attestation_gossip.ssz_append(s);
}
}
}
}
impl Decodable for PubsubMessage {
fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), DecodeError> {
let (id, index) = u32::ssz_decode(bytes, index)?;
match id {
1 => {
let (block, index) = BlockRootSlot::ssz_decode(bytes, index)?;
Ok((PubsubMessage::Block(block), index))
}
2 => {
let (attestation, index) = Attestation::ssz_decode(bytes, index)?;
Ok((PubsubMessage::Attestation(attestation), index))
}
_ => Err(DecodeError::Invalid),
}
}
} }

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@ -8,12 +8,13 @@ pub mod error;
pub mod rpc; pub mod rpc;
mod service; mod service;
pub use behaviour::PubsubMessage;
pub use config::Config as NetworkConfig; pub use config::Config as NetworkConfig;
pub use libp2p::{ pub use libp2p::{
gossipsub::{GossipsubConfig, GossipsubConfigBuilder}, gossipsub::{GossipsubConfig, GossipsubConfigBuilder},
PeerId, PeerId,
}; };
pub use rpc::{HelloMessage, RPCEvent}; pub use rpc::RPCEvent;
pub use service::Libp2pEvent; pub use service::Libp2pEvent;
pub use service::Service; pub use service::Service;
pub use types::multiaddr; pub use types::multiaddr;

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@ -1,6 +1,7 @@
use ssz::{Decodable, DecodeError, Encodable, SszStream};
/// Available RPC methods types and ids. /// Available RPC methods types and ids.
use ssz_derive::{Decode, Encode}; use ssz_derive::{Decode, Encode};
use types::{BeaconBlockBody, BeaconBlockHeader, Epoch, Hash256, Slot}; use types::{Attestation, BeaconBlockBody, BeaconBlockHeader, Epoch, Hash256, Slot};
#[derive(Debug)] #[derive(Debug)]
/// Available Serenity Libp2p RPC methods /// Available Serenity Libp2p RPC methods
@ -53,13 +54,27 @@ impl Into<u16> for RPCMethod {
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub enum RPCRequest { pub enum RPCRequest {
Hello(HelloMessage), Hello(HelloMessage),
Goodbye(u64), Goodbye(GoodbyeReason),
BeaconBlockRoots(BeaconBlockRootsRequest), BeaconBlockRoots(BeaconBlockRootsRequest),
BeaconBlockHeaders(BeaconBlockHeadersRequest), BeaconBlockHeaders(BeaconBlockHeadersRequest),
BeaconBlockBodies(BeaconBlockBodiesRequest), BeaconBlockBodies(BeaconBlockBodiesRequest),
BeaconChainState(BeaconChainStateRequest), BeaconChainState(BeaconChainStateRequest),
} }
impl RPCRequest {
pub fn method_id(&self) -> u16 {
let method = match self {
RPCRequest::Hello(_) => RPCMethod::Hello,
RPCRequest::Goodbye(_) => RPCMethod::Goodbye,
RPCRequest::BeaconBlockRoots(_) => RPCMethod::BeaconBlockRoots,
RPCRequest::BeaconBlockHeaders(_) => RPCMethod::BeaconBlockHeaders,
RPCRequest::BeaconBlockBodies(_) => RPCMethod::BeaconBlockBodies,
RPCRequest::BeaconChainState(_) => RPCMethod::BeaconChainState,
};
method.into()
}
}
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub enum RPCResponse { pub enum RPCResponse {
Hello(HelloMessage), Hello(HelloMessage),
@ -69,6 +84,19 @@ pub enum RPCResponse {
BeaconChainState(BeaconChainStateResponse), BeaconChainState(BeaconChainStateResponse),
} }
impl RPCResponse {
pub fn method_id(&self) -> u16 {
let method = match self {
RPCResponse::Hello(_) => RPCMethod::Hello,
RPCResponse::BeaconBlockRoots(_) => RPCMethod::BeaconBlockRoots,
RPCResponse::BeaconBlockHeaders(_) => RPCMethod::BeaconBlockHeaders,
RPCResponse::BeaconBlockBodies(_) => RPCMethod::BeaconBlockBodies,
RPCResponse::BeaconChainState(_) => RPCMethod::BeaconChainState,
};
method.into()
}
}
/* Request/Response data structures for RPC methods */ /* Request/Response data structures for RPC methods */
/// The HELLO request/response handshake message. /// The HELLO request/response handshake message.
@ -86,76 +114,125 @@ pub struct HelloMessage {
pub best_slot: Slot, pub best_slot: Slot,
} }
/// The reason given for a `Goodbye` message.
///
/// Note: any unknown `u64::into(n)` will resolve to `GoodbyeReason::Unknown` for any unknown `n`,
/// however `GoodbyeReason::Unknown.into()` will go into `0_u64`. Therefore de-serializing then
/// re-serializing may not return the same bytes.
#[derive(Debug, Clone)]
pub enum GoodbyeReason {
ClientShutdown,
IrreleventNetwork,
Fault,
Unknown,
}
impl From<u64> for GoodbyeReason {
fn from(id: u64) -> GoodbyeReason {
match id {
1 => GoodbyeReason::ClientShutdown,
2 => GoodbyeReason::IrreleventNetwork,
3 => GoodbyeReason::Fault,
_ => GoodbyeReason::Unknown,
}
}
}
impl Into<u64> for GoodbyeReason {
fn into(self) -> u64 {
match self {
GoodbyeReason::Unknown => 0,
GoodbyeReason::ClientShutdown => 1,
GoodbyeReason::IrreleventNetwork => 2,
GoodbyeReason::Fault => 3,
}
}
}
impl Encodable for GoodbyeReason {
fn ssz_append(&self, s: &mut SszStream) {
let id: u64 = (*self).clone().into();
id.ssz_append(s);
}
}
impl Decodable for GoodbyeReason {
fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), DecodeError> {
let (id, index) = u64::ssz_decode(bytes, index)?;
Ok((Self::from(id), index))
}
}
/// Request a number of beacon block roots from a peer. /// Request a number of beacon block roots from a peer.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockRootsRequest { pub struct BeaconBlockRootsRequest {
/// The starting slot of the requested blocks. /// The starting slot of the requested blocks.
start_slot: Slot, pub start_slot: Slot,
/// The number of blocks from the start slot. /// The number of blocks from the start slot.
count: u64, // this must be less than 32768. //TODO: Enforce this in the lower layers pub count: u64, // this must be less than 32768. //TODO: Enforce this in the lower layers
} }
/// Response containing a number of beacon block roots from a peer. /// Response containing a number of beacon block roots from a peer.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockRootsResponse { pub struct BeaconBlockRootsResponse {
/// List of requested blocks and associated slots. /// List of requested blocks and associated slots.
roots: Vec<BlockRootSlot>, pub roots: Vec<BlockRootSlot>,
} }
/// Contains a block root and associated slot. /// Contains a block root and associated slot.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BlockRootSlot { pub struct BlockRootSlot {
/// The block root. /// The block root.
block_root: Hash256, pub block_root: Hash256,
/// The block slot. /// The block slot.
slot: Slot, pub slot: Slot,
} }
/// Request a number of beacon block headers from a peer. /// Request a number of beacon block headers from a peer.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockHeadersRequest { pub struct BeaconBlockHeadersRequest {
/// The starting header hash of the requested headers. /// The starting header hash of the requested headers.
start_root: Hash256, pub start_root: Hash256,
/// The starting slot of the requested headers. /// The starting slot of the requested headers.
start_slot: Slot, pub start_slot: Slot,
/// The maximum number of headers than can be returned. /// The maximum number of headers than can be returned.
max_headers: u64, pub max_headers: u64,
/// The maximum number of slots to skip between blocks. /// The maximum number of slots to skip between blocks.
skip_slots: u64, pub skip_slots: u64,
} }
/// Response containing requested block headers. /// Response containing requested block headers.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockHeadersResponse { pub struct BeaconBlockHeadersResponse {
/// The list of requested beacon block headers. /// The list of requested beacon block headers.
headers: Vec<BeaconBlockHeader>, pub headers: Vec<BeaconBlockHeader>,
} }
/// Request a number of beacon block bodies from a peer. /// Request a number of beacon block bodies from a peer.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockBodiesRequest { pub struct BeaconBlockBodiesRequest {
/// The list of beacon block bodies being requested. /// The list of beacon block bodies being requested.
block_roots: Hash256, pub block_roots: Vec<Hash256>,
} }
/// Response containing the list of requested beacon block bodies. /// Response containing the list of requested beacon block bodies.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockBodiesResponse { pub struct BeaconBlockBodiesResponse {
/// The list of beacon block bodies being requested. /// The list of beacon block bodies being requested.
block_bodies: Vec<BeaconBlockBody>, pub block_bodies: Vec<BeaconBlockBody>,
} }
/// Request values for tree hashes which yield a blocks `state_root`. /// Request values for tree hashes which yield a blocks `state_root`.
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconChainStateRequest { pub struct BeaconChainStateRequest {
/// The tree hashes that a value is requested for. /// The tree hashes that a value is requested for.
hashes: Vec<Hash256>, pub hashes: Vec<Hash256>,
} }
/// Request values for tree hashes which yield a blocks `state_root`. /// Request values for tree hashes which yield a blocks `state_root`.
// Note: TBD // Note: TBD
#[derive(Encode, Decode, Clone, Debug)] #[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconChainStateResponse { pub struct BeaconChainStateResponse {
/// The values corresponding the to the requested tree hashes. /// The values corresponding the to the requested tree hashes.
values: bool, //TBD - stubbed with encodeable bool pub values: bool, //TBD - stubbed with encodeable bool
} }

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@ -2,7 +2,7 @@
/// ///
/// This is purpose built for Ethereum 2.0 serenity and the protocol listens on /// This is purpose built for Ethereum 2.0 serenity and the protocol listens on
/// `/eth/serenity/rpc/1.0.0` /// `/eth/serenity/rpc/1.0.0`
mod methods; pub mod methods;
mod protocol; mod protocol;
use futures::prelude::*; use futures::prelude::*;
@ -12,7 +12,7 @@ use libp2p::core::swarm::{
}; };
use libp2p::{Multiaddr, PeerId}; use libp2p::{Multiaddr, PeerId};
pub use methods::{HelloMessage, RPCMethod, RPCRequest, RPCResponse}; pub use methods::{HelloMessage, RPCMethod, RPCRequest, RPCResponse};
pub use protocol::{RPCEvent, RPCProtocol}; pub use protocol::{RPCEvent, RPCProtocol, RequestId};
use slog::o; use slog::o;
use std::marker::PhantomData; use std::marker::PhantomData;
use tokio::io::{AsyncRead, AsyncWrite}; use tokio::io::{AsyncRead, AsyncWrite};

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@ -1,6 +1,7 @@
use super::methods::*; use super::methods::*;
use libp2p::core::{upgrade, InboundUpgrade, OutboundUpgrade, UpgradeInfo}; use libp2p::core::{upgrade, InboundUpgrade, OutboundUpgrade, UpgradeInfo};
use ssz::{ssz_encode, Decodable, Encodable, SszStream}; use ssz::{ssz_encode, Decodable, DecodeError as SSZDecodeError, Encodable, SszStream};
use std::hash::{Hash, Hasher};
use std::io; use std::io;
use std::iter; use std::iter;
use tokio::io::{AsyncRead, AsyncWrite}; use tokio::io::{AsyncRead, AsyncWrite};
@ -29,16 +30,65 @@ impl Default for RPCProtocol {
} }
} }
/// A monotonic counter for ordering `RPCRequest`s.
#[derive(Debug, Clone, PartialEq, Default)]
pub struct RequestId(u64);
impl RequestId {
/// Increment the request id.
pub fn increment(&mut self) {
self.0 += 1
}
/// Return the previous id.
pub fn previous(&self) -> Self {
Self(self.0 - 1)
}
}
impl Eq for RequestId {}
impl Hash for RequestId {
fn hash<H: Hasher>(&self, state: &mut H) {
self.0.hash(state);
}
}
impl From<u64> for RequestId {
fn from(x: u64) -> RequestId {
RequestId(x)
}
}
impl Into<u64> for RequestId {
fn into(self) -> u64 {
self.0
}
}
impl Encodable for RequestId {
fn ssz_append(&self, s: &mut SszStream) {
self.0.ssz_append(s);
}
}
impl Decodable for RequestId {
fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), SSZDecodeError> {
let (id, index) = u64::ssz_decode(bytes, index)?;
Ok((Self::from(id), index))
}
}
/// The RPC types which are sent/received in this protocol. /// The RPC types which are sent/received in this protocol.
#[derive(Debug, Clone)] #[derive(Debug, Clone)]
pub enum RPCEvent { pub enum RPCEvent {
Request { Request {
id: u64, id: RequestId,
method_id: u16, method_id: u16,
body: RPCRequest, body: RPCRequest,
}, },
Response { Response {
id: u64, id: RequestId,
method_id: u16, //TODO: Remove and process decoding upstream method_id: u16, //TODO: Remove and process decoding upstream
result: RPCResponse, result: RPCResponse,
}, },
@ -75,7 +125,7 @@ fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
// decode the header of the rpc // decode the header of the rpc
// request/response // request/response
let (request, index) = bool::ssz_decode(&packet, 0)?; let (request, index) = bool::ssz_decode(&packet, 0)?;
let (id, index) = u64::ssz_decode(&packet, index)?; let (id, index) = RequestId::ssz_decode(&packet, index)?;
let (method_id, index) = u16::ssz_decode(&packet, index)?; let (method_id, index) = u16::ssz_decode(&packet, index)?;
if request { if request {
@ -85,8 +135,8 @@ fn decode(packet: Vec<u8>) -> Result<RPCEvent, DecodeError> {
RPCRequest::Hello(hello_body) RPCRequest::Hello(hello_body)
} }
RPCMethod::Goodbye => { RPCMethod::Goodbye => {
let (goodbye_code, _index) = u64::ssz_decode(&packet, index)?; let (goodbye_reason, _index) = GoodbyeReason::ssz_decode(&packet, index)?;
RPCRequest::Goodbye(goodbye_code) RPCRequest::Goodbye(goodbye_reason)
} }
RPCMethod::BeaconBlockRoots => { RPCMethod::BeaconBlockRoots => {
let (block_roots_request, _index) = let (block_roots_request, _index) =

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@ -1,4 +1,4 @@
use crate::behaviour::{Behaviour, BehaviourEvent}; use crate::behaviour::{Behaviour, BehaviourEvent, PubsubMessage};
use crate::error; use crate::error;
use crate::multiaddr::Protocol; use crate::multiaddr::Protocol;
use crate::rpc::RPCEvent; use crate::rpc::RPCEvent;
@ -17,7 +17,7 @@ use libp2p::{core, secio, PeerId, Swarm, Transport};
use slog::{debug, info, trace, warn}; use slog::{debug, info, trace, warn};
use std::io::{Error, ErrorKind}; use std::io::{Error, ErrorKind};
use std::time::Duration; use std::time::Duration;
use types::TopicBuilder; use types::{TopicBuilder, TopicHash};
/// The configuration and state of the libp2p components for the beacon node. /// The configuration and state of the libp2p components for the beacon node.
pub struct Service { pub struct Service {
@ -108,9 +108,17 @@ impl Stream for Service {
//Behaviour events //Behaviour events
Ok(Async::Ready(Some(event))) => match event { Ok(Async::Ready(Some(event))) => match event {
// TODO: Stub here for debugging // TODO: Stub here for debugging
BehaviourEvent::Message(m) => { BehaviourEvent::GossipMessage {
debug!(self.log, "Message received: {}", m); source,
return Ok(Async::Ready(Some(Libp2pEvent::Message(m)))); topics,
message,
} => {
debug!(self.log, "Pubsub message received: {:?}", message);
return Ok(Async::Ready(Some(Libp2pEvent::PubsubMessage {
source,
topics,
message,
})));
} }
BehaviourEvent::RPC(peer_id, event) => { BehaviourEvent::RPC(peer_id, event) => {
return Ok(Async::Ready(Some(Libp2pEvent::RPC(peer_id, event)))); return Ok(Async::Ready(Some(Libp2pEvent::RPC(peer_id, event))));
@ -172,6 +180,10 @@ pub enum Libp2pEvent {
PeerDialed(PeerId), PeerDialed(PeerId),
/// Received information about a peer on the network. /// Received information about a peer on the network.
Identified(PeerId, IdentifyInfo), Identified(PeerId, IdentifyInfo),
// TODO: Pub-sub testing only. /// Received pubsub message.
Message(String), PubsubMessage {
source: PeerId,
topics: Vec<TopicHash>,
message: PubsubMessage,
},
} }

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@ -4,12 +4,17 @@ version = "0.1.0"
authors = ["Age Manning <Age@AgeManning.com>"] authors = ["Age Manning <Age@AgeManning.com>"]
edition = "2018" edition = "2018"
[dev-dependencies]
test_harness = { path = "../beacon_chain/test_harness" }
sloggers = "0.3.2"
[dependencies] [dependencies]
beacon_chain = { path = "../beacon_chain" } beacon_chain = { path = "../beacon_chain" }
eth2-libp2p = { path = "../eth2-libp2p" } eth2-libp2p = { path = "../eth2-libp2p" }
version = { path = "../version" } version = { path = "../version" }
types = { path = "../../eth2/types" } types = { path = "../../eth2/types" }
slog = "2.4.1" slog = "2.4.1"
ssz = { path = "../../eth2/utils/ssz" }
futures = "0.1.25" futures = "0.1.25"
error-chain = "0.12.0" error-chain = "0.12.0"
crossbeam-channel = "0.3.8" crossbeam-channel = "0.3.8"

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@ -5,8 +5,12 @@ use beacon_chain::{
parking_lot::RwLockReadGuard, parking_lot::RwLockReadGuard,
slot_clock::SlotClock, slot_clock::SlotClock,
types::{BeaconState, ChainSpec}, types::{BeaconState, ChainSpec},
CheckPoint, AggregationOutcome, CheckPoint,
}; };
use eth2_libp2p::rpc::HelloMessage;
use types::{Attestation, BeaconBlock, BeaconBlockBody, BeaconBlockHeader, Epoch, Hash256, Slot};
pub use beacon_chain::{BeaconChainError, BlockProcessingOutcome};
/// The network's API to the beacon chain. /// The network's API to the beacon chain.
pub trait BeaconChain: Send + Sync { pub trait BeaconChain: Send + Sync {
@ -14,9 +18,48 @@ pub trait BeaconChain: Send + Sync {
fn get_state(&self) -> RwLockReadGuard<BeaconState>; fn get_state(&self) -> RwLockReadGuard<BeaconState>;
fn slot(&self) -> Slot;
fn head(&self) -> RwLockReadGuard<CheckPoint>; fn head(&self) -> RwLockReadGuard<CheckPoint>;
fn get_block(&self, block_root: &Hash256) -> Result<Option<BeaconBlock>, BeaconChainError>;
fn best_slot(&self) -> Slot;
fn best_block_root(&self) -> Hash256;
fn finalized_head(&self) -> RwLockReadGuard<CheckPoint>; fn finalized_head(&self) -> RwLockReadGuard<CheckPoint>;
fn finalized_epoch(&self) -> Epoch;
fn hello_message(&self) -> HelloMessage;
fn process_block(&self, block: BeaconBlock)
-> Result<BlockProcessingOutcome, BeaconChainError>;
fn process_attestation(
&self,
attestation: Attestation,
) -> Result<AggregationOutcome, BeaconChainError>;
fn get_block_roots(
&self,
start_slot: Slot,
count: usize,
skip: usize,
) -> Result<Vec<Hash256>, BeaconChainError>;
fn get_block_headers(
&self,
start_slot: Slot,
count: usize,
skip: usize,
) -> Result<Vec<BeaconBlockHeader>, BeaconChainError>;
fn get_block_bodies(&self, roots: &[Hash256])
-> Result<Vec<BeaconBlockBody>, BeaconChainError>;
fn is_new_block_root(&self, beacon_block_root: &Hash256) -> Result<bool, BeaconChainError>;
} }
impl<T, U, F> BeaconChain for RawBeaconChain<T, U, F> impl<T, U, F> BeaconChain for RawBeaconChain<T, U, F>
@ -33,11 +76,93 @@ where
self.state.read() self.state.read()
} }
fn slot(&self) -> Slot {
self.get_state().slot
}
fn head(&self) -> RwLockReadGuard<CheckPoint> { fn head(&self) -> RwLockReadGuard<CheckPoint> {
self.head() self.head()
} }
fn get_block(&self, block_root: &Hash256) -> Result<Option<BeaconBlock>, BeaconChainError> {
self.get_block(block_root)
}
fn finalized_epoch(&self) -> Epoch {
self.get_state().finalized_epoch
}
fn finalized_head(&self) -> RwLockReadGuard<CheckPoint> { fn finalized_head(&self) -> RwLockReadGuard<CheckPoint> {
self.finalized_head() self.finalized_head()
} }
fn best_slot(&self) -> Slot {
self.head().beacon_block.slot
}
fn best_block_root(&self) -> Hash256 {
self.head().beacon_block_root
}
fn hello_message(&self) -> HelloMessage {
let spec = self.get_spec();
let state = self.get_state();
HelloMessage {
network_id: spec.chain_id,
latest_finalized_root: state.finalized_root,
latest_finalized_epoch: state.finalized_epoch,
best_root: self.best_block_root(),
best_slot: self.best_slot(),
}
}
fn process_block(
&self,
block: BeaconBlock,
) -> Result<BlockProcessingOutcome, BeaconChainError> {
self.process_block(block)
}
fn process_attestation(
&self,
_attestation: Attestation,
) -> Result<AggregationOutcome, BeaconChainError> {
// Awaiting a proper operations pool before we can import attestations.
//
// Returning a useless error for now.
//
// https://github.com/sigp/lighthouse/issues/281
return Err(BeaconChainError::DBInconsistent("CANNOT PROCESS".into()));
}
fn get_block_roots(
&self,
start_slot: Slot,
count: usize,
skip: usize,
) -> Result<Vec<Hash256>, BeaconChainError> {
self.get_block_roots(start_slot, count, skip)
}
fn get_block_headers(
&self,
start_slot: Slot,
count: usize,
skip: usize,
) -> Result<Vec<BeaconBlockHeader>, BeaconChainError> {
let roots = self.get_block_roots(start_slot, count, skip)?;
self.get_block_headers(&roots)
}
fn get_block_bodies(
&self,
roots: &[Hash256],
) -> Result<Vec<BeaconBlockBody>, BeaconChainError> {
self.get_block_bodies(roots)
}
fn is_new_block_root(&self, beacon_block_root: &Hash256) -> Result<bool, BeaconChainError> {
self.is_new_block_root(beacon_block_root)
}
} }

View File

@ -1,9 +1,10 @@
/// This crate provides the network server for Lighthouse. /// This crate provides the network server for Lighthouse.
pub mod beacon_chain; pub mod beacon_chain;
pub mod error; pub mod error;
mod message_handler; pub mod message_handler;
mod service; pub mod service;
pub mod sync; pub mod sync;
pub use eth2_libp2p::NetworkConfig; pub use eth2_libp2p::NetworkConfig;
pub use service::NetworkMessage;
pub use service::Service; pub use service::Service;

View File

@ -4,33 +4,29 @@ use crate::service::{NetworkMessage, OutgoingMessage};
use crate::sync::SimpleSync; use crate::sync::SimpleSync;
use crossbeam_channel::{unbounded as channel, Sender}; use crossbeam_channel::{unbounded as channel, Sender};
use eth2_libp2p::{ use eth2_libp2p::{
rpc::{RPCMethod, RPCRequest, RPCResponse}, behaviour::PubsubMessage,
HelloMessage, PeerId, RPCEvent, rpc::{methods::GoodbyeReason, RPCRequest, RPCResponse, RequestId},
PeerId, RPCEvent,
}; };
use futures::future; use futures::future;
use slog::warn; use slog::{debug, warn};
use slog::{debug, trace};
use std::collections::HashMap; use std::collections::HashMap;
use std::sync::Arc; use std::sync::Arc;
use std::time::{Duration, Instant}; use std::time::Instant;
/// Timeout for RPC requests. /// Timeout for RPC requests.
const REQUEST_TIMEOUT: Duration = Duration::from_secs(30); // const REQUEST_TIMEOUT: Duration = Duration::from_secs(30);
/// Timeout before banning a peer for non-identification. /// Timeout before banning a peer for non-identification.
const HELLO_TIMEOUT: Duration = Duration::from_secs(30); // const HELLO_TIMEOUT: Duration = Duration::from_secs(30);
/// Handles messages received from the network and client and organises syncing. /// Handles messages received from the network and client and organises syncing.
pub struct MessageHandler { pub struct MessageHandler {
/// Currently loaded and initialised beacon chain. /// Currently loaded and initialised beacon chain.
chain: Arc<BeaconChain>, _chain: Arc<BeaconChain>,
/// The syncing framework. /// The syncing framework.
sync: SimpleSync, sync: SimpleSync,
/// The network channel to relay messages to the Network service. /// The context required to send messages to, and process messages from peers.
network_send: crossbeam_channel::Sender<NetworkMessage>, network_context: NetworkContext,
/// A mapping of peers and the RPC id we have sent an RPC request to.
requests: HashMap<(PeerId, u64), Instant>,
/// A counter of request id for each peer.
request_ids: HashMap<PeerId, u64>,
/// The `MessageHandler` logger. /// The `MessageHandler` logger.
log: slog::Logger, log: slog::Logger,
} }
@ -44,8 +40,8 @@ pub enum HandlerMessage {
PeerDisconnected(PeerId), PeerDisconnected(PeerId),
/// An RPC response/request has been received. /// An RPC response/request has been received.
RPC(PeerId, RPCEvent), RPC(PeerId, RPCEvent),
/// A block has been imported. /// A gossip message has been received.
BlockImported(), //TODO: This comes from pub-sub - decide its contents PubsubMessage(PeerId, PubsubMessage),
} }
impl MessageHandler { impl MessageHandler {
@ -65,13 +61,9 @@ impl MessageHandler {
let sync = SimpleSync::new(beacon_chain.clone(), &log); let sync = SimpleSync::new(beacon_chain.clone(), &log);
let mut handler = MessageHandler { let mut handler = MessageHandler {
// TODO: The handler may not need a chain, perhaps only sync? _chain: beacon_chain.clone(),
chain: beacon_chain.clone(),
sync, sync,
network_send, network_context: NetworkContext::new(network_send, log.clone()),
requests: HashMap::new(),
request_ids: HashMap::new(),
log: log.clone(), log: log.clone(),
}; };
@ -93,13 +85,16 @@ impl MessageHandler {
match message { match message {
// we have initiated a connection to a peer // we have initiated a connection to a peer
HandlerMessage::PeerDialed(peer_id) => { HandlerMessage::PeerDialed(peer_id) => {
let id = self.generate_request_id(&peer_id); self.sync.on_connect(peer_id, &mut self.network_context);
self.send_hello(peer_id, id, true);
} }
// we have received an RPC message request/response // we have received an RPC message request/response
HandlerMessage::RPC(peer_id, rpc_event) => { HandlerMessage::RPC(peer_id, rpc_event) => {
self.handle_rpc_message(peer_id, rpc_event); self.handle_rpc_message(peer_id, rpc_event);
} }
// we have received an RPC message request/response
HandlerMessage::PubsubMessage(peer_id, gossip) => {
self.handle_gossip(peer_id, gossip);
}
//TODO: Handle all messages //TODO: Handle all messages
_ => {} _ => {}
} }
@ -117,109 +112,195 @@ impl MessageHandler {
} }
/// A new RPC request has been received from the network. /// A new RPC request has been received from the network.
fn handle_rpc_request(&mut self, peer_id: PeerId, id: u64, request: RPCRequest) { fn handle_rpc_request(&mut self, peer_id: PeerId, request_id: RequestId, request: RPCRequest) {
// TODO: process the `id`.
match request { match request {
RPCRequest::Hello(hello_message) => { RPCRequest::Hello(hello_message) => self.sync.on_hello_request(
self.handle_hello_request(peer_id, id, hello_message) peer_id,
request_id,
hello_message,
&mut self.network_context,
),
RPCRequest::Goodbye(goodbye_reason) => self.sync.on_goodbye(peer_id, goodbye_reason),
RPCRequest::BeaconBlockRoots(request) => self.sync.on_beacon_block_roots_request(
peer_id,
request_id,
request,
&mut self.network_context,
),
RPCRequest::BeaconBlockHeaders(request) => self.sync.on_beacon_block_headers_request(
peer_id,
request_id,
request,
&mut self.network_context,
),
RPCRequest::BeaconBlockBodies(request) => self.sync.on_beacon_block_bodies_request(
peer_id,
request_id,
request,
&mut self.network_context,
),
RPCRequest::BeaconChainState(_) => {
// We do not implement this endpoint, it is not required and will only likely be
// useful for light-client support in later phases.
warn!(self.log, "BeaconChainState RPC call is not supported.");
} }
// TODO: Handle all requests
_ => {}
} }
} }
/// An RPC response has been received from the network. /// An RPC response has been received from the network.
// we match on id and ignore responses past the timeout. // we match on id and ignore responses past the timeout.
fn handle_rpc_response(&mut self, peer_id: PeerId, id: u64, response: RPCResponse) { fn handle_rpc_response(&mut self, peer_id: PeerId, id: RequestId, response: RPCResponse) {
// if response id is related to a request, ignore (likely RPC timeout) // if response id is not related to a request, ignore (likely RPC timeout)
if self.requests.remove(&(peer_id.clone(), id)).is_none() { if self
debug!(self.log, "Unrecognized response from peer: {:?}", peer_id); .network_context
.outstanding_outgoing_request_ids
.remove(&(peer_id.clone(), id.clone()))
.is_none()
{
warn!(
self.log,
"Unknown ResponseId for incoming RPCRequest";
"peer" => format!("{:?}", peer_id),
"request_id" => format!("{:?}", id)
);
return; return;
} }
match response { match response {
RPCResponse::Hello(hello_message) => { RPCResponse::Hello(hello_message) => {
debug!(self.log, "Hello response received from peer: {:?}", peer_id); self.sync
self.validate_hello(peer_id, hello_message); .on_hello_response(peer_id, hello_message, &mut self.network_context);
}
RPCResponse::BeaconBlockRoots(response) => {
self.sync.on_beacon_block_roots_response(
peer_id,
response,
&mut self.network_context,
);
}
RPCResponse::BeaconBlockHeaders(response) => {
self.sync.on_beacon_block_headers_response(
peer_id,
response,
&mut self.network_context,
);
}
RPCResponse::BeaconBlockBodies(response) => {
self.sync.on_beacon_block_bodies_response(
peer_id,
response,
&mut self.network_context,
);
}
RPCResponse::BeaconChainState(_) => {
// We do not implement this endpoint, it is not required and will only likely be
// useful for light-client support in later phases.
//
// Theoretically, we shouldn't reach this code because we should never send a
// beacon state RPC request.
warn!(self.log, "BeaconChainState RPC call is not supported.");
} }
// TODO: Handle all responses
_ => {}
}
}
/// Handle a HELLO RPC request message.
fn handle_hello_request(&mut self, peer_id: PeerId, id: u64, hello_message: HelloMessage) {
// send back a HELLO message
self.send_hello(peer_id.clone(), id, false);
// validate the peer
self.validate_hello(peer_id, hello_message);
}
/// Validate a HELLO RPC message.
fn validate_hello(&mut self, peer_id: PeerId, message: HelloMessage) {
// validate the peer
if !self.sync.validate_peer(peer_id.clone(), message) {
debug!(
self.log,
"Peer dropped due to mismatching HELLO messages: {:?}", peer_id
);
//TODO: block/ban the peer
}
}
/* General RPC helper functions */
/// Generates a new request id for a peer.
fn generate_request_id(&mut self, peer_id: &PeerId) -> u64 {
// generate a unique id for the peer
let id = {
let borrowed_id = self.request_ids.entry(peer_id.clone()).or_insert_with(|| 0);
let id = borrowed_id.clone();
//increment the counter
*borrowed_id += 1;
id
}; };
// register RPC request
self.requests.insert((peer_id.clone(), id), Instant::now());
debug!(
self.log,
"Hello request registered with peer: {:?}", peer_id
);
id
} }
/// Sends a HELLO RPC request or response to a newly connected peer. /// Handle RPC messages
//TODO: The boolean determines if sending request/respond, will be cleaner in the RPC re-write fn handle_gossip(&mut self, peer_id: PeerId, gossip_message: PubsubMessage) {
fn send_hello(&mut self, peer_id: PeerId, id: u64, is_request: bool) { match gossip_message {
let rpc_event = if is_request { PubsubMessage::Block(message) => {
self.sync
.on_block_gossip(peer_id, message, &mut self.network_context)
}
PubsubMessage::Attestation(message) => {
self.sync
.on_attestation_gossip(peer_id, message, &mut self.network_context)
}
}
}
}
pub struct NetworkContext {
/// The network channel to relay messages to the Network service.
network_send: crossbeam_channel::Sender<NetworkMessage>,
/// A mapping of peers and the RPC id we have sent an RPC request to.
outstanding_outgoing_request_ids: HashMap<(PeerId, RequestId), Instant>,
/// Stores the next `RequestId` we should include on an outgoing `RPCRequest` to a `PeerId`.
outgoing_request_ids: HashMap<PeerId, RequestId>,
/// The `MessageHandler` logger.
log: slog::Logger,
}
impl NetworkContext {
pub fn new(network_send: crossbeam_channel::Sender<NetworkMessage>, log: slog::Logger) -> Self {
Self {
network_send,
outstanding_outgoing_request_ids: HashMap::new(),
outgoing_request_ids: HashMap::new(),
log,
}
}
pub fn disconnect(&mut self, peer_id: PeerId, reason: GoodbyeReason) {
self.send_rpc_request(peer_id, RPCRequest::Goodbye(reason))
// TODO: disconnect peers.
}
pub fn send_rpc_request(&mut self, peer_id: PeerId, rpc_request: RPCRequest) {
let id = self.generate_request_id(&peer_id);
self.outstanding_outgoing_request_ids
.insert((peer_id.clone(), id.clone()), Instant::now());
self.send_rpc_event(
peer_id,
RPCEvent::Request { RPCEvent::Request {
id, id,
method_id: RPCMethod::Hello.into(), method_id: rpc_request.method_id(),
body: RPCRequest::Hello(self.sync.generate_hello()), body: rpc_request,
} },
} else { );
RPCEvent::Response {
id,
method_id: RPCMethod::Hello.into(),
result: RPCResponse::Hello(self.sync.generate_hello()),
}
};
// send the hello request to the network
trace!(self.log, "Sending HELLO message to peer {:?}", peer_id);
self.send_rpc(peer_id, rpc_event);
} }
/// Sends an RPC request/response to the network server. pub fn send_rpc_response(
fn send_rpc(&self, peer_id: PeerId, rpc_event: RPCEvent) { &mut self,
peer_id: PeerId,
request_id: RequestId,
rpc_response: RPCResponse,
) {
self.send_rpc_event(
peer_id,
RPCEvent::Response {
id: request_id,
method_id: rpc_response.method_id(),
result: rpc_response,
},
);
}
fn send_rpc_event(&self, peer_id: PeerId, rpc_event: RPCEvent) {
self.send(peer_id, OutgoingMessage::RPC(rpc_event))
}
fn send(&self, peer_id: PeerId, outgoing_message: OutgoingMessage) {
self.network_send self.network_send
.send(NetworkMessage::Send( .send(NetworkMessage::Send(peer_id, outgoing_message))
peer_id,
OutgoingMessage::RPC(rpc_event),
))
.unwrap_or_else(|_| { .unwrap_or_else(|_| {
warn!( warn!(
self.log, self.log,
"Could not send RPC message to the network service" "Could not send RPC message to the network service"
) )
}); });
//
}
/// Returns the next `RequestId` for sending an `RPCRequest` to the `peer_id`.
fn generate_request_id(&mut self, peer_id: &PeerId) -> RequestId {
let next_id = self
.outgoing_request_ids
.entry(peer_id.clone())
.and_modify(|id| id.increment())
.or_insert_with(|| RequestId::from(1));
next_id.previous()
} }
} }

View File

@ -3,15 +3,16 @@ use crate::error;
use crate::message_handler::{HandlerMessage, MessageHandler}; use crate::message_handler::{HandlerMessage, MessageHandler};
use crate::NetworkConfig; use crate::NetworkConfig;
use crossbeam_channel::{unbounded as channel, Sender, TryRecvError}; use crossbeam_channel::{unbounded as channel, Sender, TryRecvError};
use eth2_libp2p::RPCEvent;
use eth2_libp2p::Service as LibP2PService; use eth2_libp2p::Service as LibP2PService;
use eth2_libp2p::{Libp2pEvent, PeerId}; use eth2_libp2p::{Libp2pEvent, PeerId};
use eth2_libp2p::{PubsubMessage, RPCEvent};
use futures::prelude::*; use futures::prelude::*;
use futures::sync::oneshot; use futures::sync::oneshot;
use futures::Stream; use futures::Stream;
use slog::{debug, info, o, trace}; use slog::{debug, info, o, trace};
use std::sync::Arc; use std::sync::Arc;
use tokio::runtime::TaskExecutor; use tokio::runtime::TaskExecutor;
use types::Topic;
/// Service that handles communication between internal services and the eth2_libp2p network service. /// Service that handles communication between internal services and the eth2_libp2p network service.
pub struct Service { pub struct Service {
@ -99,6 +100,7 @@ fn spawn_service(
Ok(network_exit) Ok(network_exit)
} }
//TODO: Potentially handle channel errors
fn network_service( fn network_service(
mut libp2p_service: LibP2PService, mut libp2p_service: LibP2PService,
network_recv: crossbeam_channel::Receiver<NetworkMessage>, network_recv: crossbeam_channel::Receiver<NetworkMessage>,
@ -128,10 +130,17 @@ fn network_service(
"We have identified peer: {:?} with {:?}", peer_id, info "We have identified peer: {:?} with {:?}", peer_id, info
); );
} }
Libp2pEvent::Message(m) => debug!( Libp2pEvent::PubsubMessage {
libp2p_service.log, source,
"Network Service: Message received: {}", m topics: _,
), message,
} => {
//TODO: Decide if we need to propagate the topic upwards. (Potentially for
//attestations)
message_handler_send
.send(HandlerMessage::PubsubMessage(source, message))
.map_err(|_| " failed to send pubsub message to handler")?;
}
}, },
Ok(Async::Ready(None)) => unreachable!("Stream never ends"), Ok(Async::Ready(None)) => unreachable!("Stream never ends"),
Ok(Async::NotReady) => break, Ok(Async::NotReady) => break,
@ -156,6 +165,10 @@ fn network_service(
} }
}; };
} }
Ok(NetworkMessage::Publish { topics, message }) => {
debug!(log, "Sending pubsub message on topics {:?}", topics);
libp2p_service.swarm.publish(topics, message);
}
Err(TryRecvError::Empty) => break, Err(TryRecvError::Empty) => break,
Err(TryRecvError::Disconnected) => { Err(TryRecvError::Disconnected) => {
return Err(eth2_libp2p::error::Error::from( return Err(eth2_libp2p::error::Error::from(
@ -174,6 +187,11 @@ pub enum NetworkMessage {
/// Send a message to libp2p service. /// Send a message to libp2p service.
//TODO: Define typing for messages across the wire //TODO: Define typing for messages across the wire
Send(PeerId, OutgoingMessage), Send(PeerId, OutgoingMessage),
/// Publish a message to pubsub mechanism.
Publish {
topics: Vec<Topic>,
message: PubsubMessage,
},
} }
/// Type of outgoing messages that can be sent through the network service. /// Type of outgoing messages that can be sent through the network service.

View File

@ -0,0 +1,232 @@
use crate::beacon_chain::BeaconChain;
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::PeerId;
use slog::{debug, error};
use ssz::TreeHash;
use std::sync::Arc;
use std::time::{Duration, Instant};
use types::{BeaconBlock, BeaconBlockBody, BeaconBlockHeader, Hash256};
/// Provides a queue for fully and partially built `BeaconBlock`s.
///
/// The queue is fundamentally a `Vec<PartialBeaconBlock>` where no two items have the same
/// `item.block_root`. This struct it backed by a `Vec` not a `HashMap` for the following two
/// reasons:
///
/// - When we receive a `BeaconBlockBody`, the only way we can find it's matching
/// `BeaconBlockHeader` is to find a header such that `header.beacon_block_body ==
/// hash_tree_root(body)`. Therefore, if we used a `HashMap` we would need to use the root of
/// `BeaconBlockBody` as the key.
/// - It is possible for multiple distinct blocks to have identical `BeaconBlockBodies`. Therefore
/// we cannot use a `HashMap` keyed by the root of `BeaconBlockBody`.
pub struct ImportQueue {
pub chain: Arc<BeaconChain>,
/// Partially imported blocks, keyed by the root of `BeaconBlockBody`.
pub partials: Vec<PartialBeaconBlock>,
/// Time before a queue entry is considered state.
pub stale_time: Duration,
/// Logging
log: slog::Logger,
}
impl ImportQueue {
/// Return a new, empty queue.
pub fn new(chain: Arc<BeaconChain>, stale_time: Duration, log: slog::Logger) -> Self {
Self {
chain,
partials: vec![],
stale_time,
log,
}
}
/// Completes all possible partials into `BeaconBlock` and returns them, sorted by increasing
/// slot number. Does not delete the partials from the queue, this must be done manually.
///
/// Returns `(queue_index, block, sender)`:
///
/// - `block_root`: may be used to remove the entry if it is successfully processed.
/// - `block`: the completed block.
/// - `sender`: the `PeerId` the provided the `BeaconBlockBody` which completed the partial.
pub fn complete_blocks(&self) -> Vec<(Hash256, BeaconBlock, PeerId)> {
let mut complete: Vec<(Hash256, BeaconBlock, PeerId)> = self
.partials
.iter()
.filter_map(|partial| partial.clone().complete())
.collect();
// Sort the completable partials to be in ascending slot order.
complete.sort_unstable_by(|a, b| a.1.slot.partial_cmp(&b.1.slot).unwrap());
complete
}
/// Removes the first `PartialBeaconBlock` with a matching `block_root`, returning the partial
/// if it exists.
pub fn remove(&mut self, block_root: Hash256) -> Option<PartialBeaconBlock> {
let position = self
.partials
.iter()
.position(|p| p.block_root == block_root)?;
Some(self.partials.remove(position))
}
/// Flushes all stale entries from the queue.
///
/// An entry is stale if it has as a `inserted` time that is more than `self.stale_time` in the
/// past.
pub fn remove_stale(&mut self) {
let stale_indices: Vec<usize> = self
.partials
.iter()
.enumerate()
.filter_map(|(i, partial)| {
if partial.inserted + self.stale_time <= Instant::now() {
Some(i)
} else {
None
}
})
.collect();
if !stale_indices.is_empty() {
debug!(
self.log,
"ImportQueue removing stale entries";
"stale_items" => stale_indices.len(),
"stale_time_seconds" => self.stale_time.as_secs()
);
}
stale_indices.iter().for_each(|&i| {
self.partials.remove(i);
});
}
/// Returns `true` if `self.chain` has not yet processed this block.
pub fn is_new_block(&self, block_root: &Hash256) -> bool {
self.chain
.is_new_block_root(&block_root)
.unwrap_or_else(|_| {
error!(self.log, "Unable to determine if block is new.");
true
})
}
/// Returns the index of the first new root in the list of block roots.
pub fn first_new_root(&mut self, roots: &[BlockRootSlot]) -> Option<usize> {
roots
.iter()
.position(|brs| self.is_new_block(&brs.block_root))
}
/// Adds the `headers` to the `partials` queue. Returns a list of `Hash256` block roots for
/// which we should use to request `BeaconBlockBodies`.
///
/// If a `header` is not in the queue and has not been processed by the chain it is added to
/// the queue and it's block root is included in the output.
///
/// If a `header` is already in the queue, but not yet processed by the chain the block root is
/// included in the output and the `inserted` time for the partial record is set to
/// `Instant::now()`. Updating the `inserted` time stops the partial from becoming stale.
///
/// Presently the queue enforces that a `BeaconBlockHeader` _must_ be received before its
/// `BeaconBlockBody`. This is not a natural requirement and we could enhance the queue to lift
/// this restraint.
pub fn enqueue_headers(
&mut self,
headers: Vec<BeaconBlockHeader>,
sender: PeerId,
) -> Vec<Hash256> {
let mut required_bodies: Vec<Hash256> = vec![];
for header in headers {
let block_root = Hash256::from_slice(&header.hash_tree_root()[..]);
if self.is_new_block(&block_root) {
self.insert_header(block_root, header, sender.clone());
required_bodies.push(block_root)
}
}
required_bodies
}
/// If there is a matching `header` for this `body`, adds it to the queue.
///
/// If there is no `header` for the `body`, the body is simply discarded.
pub fn enqueue_bodies(&mut self, bodies: Vec<BeaconBlockBody>, sender: PeerId) {
for body in bodies {
self.insert_body(body, sender.clone());
}
}
/// Inserts a header to the queue.
///
/// If the header already exists, the `inserted` time is set to `now` and not other
/// modifications are made.
fn insert_header(&mut self, block_root: Hash256, header: BeaconBlockHeader, sender: PeerId) {
if let Some(i) = self
.partials
.iter()
.position(|p| p.block_root == block_root)
{
self.partials[i].inserted = Instant::now();
} else {
self.partials.push(PartialBeaconBlock {
block_root,
header,
body: None,
inserted: Instant::now(),
sender,
})
}
}
/// Updates an existing partial with the `body`.
///
/// If there is no header for the `body`, the body is simply discarded.
///
/// If the body already existed, the `inserted` time is set to `now`.
fn insert_body(&mut self, body: BeaconBlockBody, sender: PeerId) {
let body_root = Hash256::from_slice(&body.hash_tree_root()[..]);
self.partials.iter_mut().for_each(|mut p| {
if body_root == p.header.block_body_root {
p.inserted = Instant::now();
if p.body.is_none() {
p.body = Some(body.clone());
p.sender = sender.clone();
}
}
});
}
}
/// Individual components of a `BeaconBlock`, potentially all that are required to form a full
/// `BeaconBlock`.
#[derive(Clone, Debug)]
pub struct PartialBeaconBlock {
/// `BeaconBlock` root.
pub block_root: Hash256,
pub header: BeaconBlockHeader,
pub body: Option<BeaconBlockBody>,
/// The instant at which this record was created or last meaningfully modified. Used to
/// determine if an entry is stale and should be removed.
pub inserted: Instant,
/// The `PeerId` that last meaningfully contributed to this item.
pub sender: PeerId,
}
impl PartialBeaconBlock {
/// Consumes `self` and returns a full built `BeaconBlock`, it's root and the `sender`
/// `PeerId`, if enough information exists to complete the block. Otherwise, returns `None`.
pub fn complete(self) -> Option<(Hash256, BeaconBlock, PeerId)> {
Some((
self.block_root,
self.header.into_block(self.body?),
self.sender,
))
}
}

View File

@ -1,3 +1,4 @@
mod import_queue;
/// Syncing for lighthouse. /// Syncing for lighthouse.
/// ///
/// Stores the various syncing methods for the beacon chain. /// Stores the various syncing methods for the beacon chain.

View File

@ -1,112 +1,685 @@
use super::import_queue::ImportQueue;
use crate::beacon_chain::BeaconChain; use crate::beacon_chain::BeaconChain;
use eth2_libp2p::rpc::HelloMessage; use crate::message_handler::NetworkContext;
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::rpc::{RPCRequest, RPCResponse, RequestId};
use eth2_libp2p::PeerId; use eth2_libp2p::PeerId;
use slog::{debug, o}; use slog::{debug, error, info, o, warn};
use std::collections::HashMap; use std::collections::HashMap;
use std::sync::Arc; use std::sync::Arc;
use types::{Epoch, Hash256, Slot}; use std::time::Duration;
use types::{Attestation, Epoch, Hash256, Slot};
/// The number of slots that we can import blocks ahead of us, before going into full Sync mode. /// The number of slots that we can import blocks ahead of us, before going into full Sync mode.
const SLOT_IMPORT_TOLERANCE: u64 = 100; const SLOT_IMPORT_TOLERANCE: u64 = 100;
/// The amount of seconds a block (or partial block) may exist in the import queue.
const QUEUE_STALE_SECS: u64 = 60;
/// Keeps track of syncing information for known connected peers. /// Keeps track of syncing information for known connected peers.
#[derive(Clone, Copy, Debug)]
pub struct PeerSyncInfo { pub struct PeerSyncInfo {
network_id: u8,
latest_finalized_root: Hash256, latest_finalized_root: Hash256,
latest_finalized_epoch: Epoch, latest_finalized_epoch: Epoch,
best_root: Hash256, best_root: Hash256,
best_slot: Slot, best_slot: Slot,
} }
impl PeerSyncInfo {
/// Returns `true` if the has a different network ID to `other`.
fn has_different_network_id_to(&self, other: Self) -> bool {
self.network_id != other.network_id
}
/// Returns `true` if the peer has a higher finalized epoch than `other`.
fn has_higher_finalized_epoch_than(&self, other: Self) -> bool {
self.latest_finalized_epoch > other.latest_finalized_epoch
}
/// Returns `true` if the peer has a higher best slot than `other`.
fn has_higher_best_slot_than(&self, other: Self) -> bool {
self.best_slot > other.best_slot
}
}
/// The status of a peers view on the chain, relative to some other view of the chain (presumably
/// our view).
#[derive(PartialEq, Clone, Copy, Debug)]
pub enum PeerStatus {
/// The peer is on a completely different chain.
DifferentNetworkId,
/// The peer lists a finalized epoch for which we have a different root.
FinalizedEpochNotInChain,
/// The peer has a higher finalized epoch.
HigherFinalizedEpoch,
/// The peer has a higher best slot.
HigherBestSlot,
/// The peer has the same or lesser view of the chain. We have nothing to request of them.
NotInteresting,
}
impl PeerStatus {
pub fn should_handshake(&self) -> bool {
match self {
PeerStatus::DifferentNetworkId => false,
PeerStatus::FinalizedEpochNotInChain => false,
PeerStatus::HigherFinalizedEpoch => true,
PeerStatus::HigherBestSlot => true,
PeerStatus::NotInteresting => true,
}
}
}
impl From<HelloMessage> for PeerSyncInfo {
fn from(hello: HelloMessage) -> PeerSyncInfo {
PeerSyncInfo {
network_id: hello.network_id,
latest_finalized_root: hello.latest_finalized_root,
latest_finalized_epoch: hello.latest_finalized_epoch,
best_root: hello.best_root,
best_slot: hello.best_slot,
}
}
}
impl From<&Arc<BeaconChain>> for PeerSyncInfo {
fn from(chain: &Arc<BeaconChain>) -> PeerSyncInfo {
Self::from(chain.hello_message())
}
}
/// The current syncing state. /// The current syncing state.
#[derive(PartialEq)] #[derive(PartialEq)]
pub enum SyncState { pub enum SyncState {
Idle, Idle,
Downloading, Downloading,
Stopped, _Stopped,
} }
/// Simple Syncing protocol. /// Simple Syncing protocol.
//TODO: Decide for HELLO messages whether its better to keep current in RAM or build on the fly
//when asked.
pub struct SimpleSync { pub struct SimpleSync {
/// A reference to the underlying beacon chain. /// A reference to the underlying beacon chain.
chain: Arc<BeaconChain>, chain: Arc<BeaconChain>,
/// A mapping of Peers to their respective PeerSyncInfo. /// A mapping of Peers to their respective PeerSyncInfo.
known_peers: HashMap<PeerId, PeerSyncInfo>, known_peers: HashMap<PeerId, PeerSyncInfo>,
/// A queue to allow importing of blocks
import_queue: ImportQueue,
/// The current state of the syncing protocol. /// The current state of the syncing protocol.
state: SyncState, state: SyncState,
/// The network id, for quick HELLO RPC message lookup.
chain_id: u8,
/// The latest epoch of the syncing chain.
latest_finalized_epoch: Epoch,
/// The latest block of the syncing chain.
latest_slot: Slot,
/// Sync logger. /// Sync logger.
log: slog::Logger, log: slog::Logger,
} }
impl SimpleSync { impl SimpleSync {
/// Instantiate a `SimpleSync` instance, with no peers and an empty queue.
pub fn new(beacon_chain: Arc<BeaconChain>, log: &slog::Logger) -> Self { pub fn new(beacon_chain: Arc<BeaconChain>, log: &slog::Logger) -> Self {
let state = beacon_chain.get_state();
let sync_logger = log.new(o!("Service"=> "Sync")); let sync_logger = log.new(o!("Service"=> "Sync"));
let queue_item_stale_time = Duration::from_secs(QUEUE_STALE_SECS);
let import_queue =
ImportQueue::new(beacon_chain.clone(), queue_item_stale_time, log.clone());
SimpleSync { SimpleSync {
chain: beacon_chain.clone(), chain: beacon_chain.clone(),
known_peers: HashMap::new(), known_peers: HashMap::new(),
import_queue,
state: SyncState::Idle, state: SyncState::Idle,
chain_id: beacon_chain.get_spec().chain_id,
latest_finalized_epoch: state.finalized_epoch,
latest_slot: state.slot - 1, //TODO: Build latest block function into Beacon chain and correct this
log: sync_logger, log: sync_logger,
} }
} }
/// Generates our current state in the form of a HELLO RPC message. /// Handle a `Goodbye` message from a peer.
pub fn generate_hello(&self) -> HelloMessage { ///
let state = &self.chain.get_state(); /// Removes the peer from `known_peers`.
//TODO: Paul to verify the logic of these fields. pub fn on_goodbye(&mut self, peer_id: PeerId, reason: GoodbyeReason) {
HelloMessage { info!(
network_id: self.chain_id, self.log, "PeerGoodbye";
latest_finalized_root: state.finalized_root, "peer" => format!("{:?}", peer_id),
latest_finalized_epoch: state.finalized_epoch, "reason" => format!("{:?}", reason),
best_root: Hash256::zero(), //TODO: build correct value as a beacon chain function );
best_slot: state.slot - 1,
self.known_peers.remove(&peer_id);
}
/// Handle the connection of a new peer.
///
/// Sends a `Hello` message to the peer.
pub fn on_connect(&self, peer_id: PeerId, network: &mut NetworkContext) {
info!(self.log, "PeerConnect"; "peer" => format!("{:?}", peer_id));
network.send_rpc_request(peer_id, RPCRequest::Hello(self.chain.hello_message()));
}
/// Handle a `Hello` request.
///
/// Processes the `HelloMessage` from the remote peer and sends back our `Hello`.
pub fn on_hello_request(
&mut self,
peer_id: PeerId,
request_id: RequestId,
hello: HelloMessage,
network: &mut NetworkContext,
) {
debug!(self.log, "HelloRequest"; "peer" => format!("{:?}", peer_id));
// Say hello back.
network.send_rpc_response(
peer_id.clone(),
request_id,
RPCResponse::Hello(self.chain.hello_message()),
);
self.process_hello(peer_id, hello, network);
}
/// Process a `Hello` response from a peer.
pub fn on_hello_response(
&mut self,
peer_id: PeerId,
hello: HelloMessage,
network: &mut NetworkContext,
) {
debug!(self.log, "HelloResponse"; "peer" => format!("{:?}", peer_id));
// Process the hello message, without sending back another hello.
self.process_hello(peer_id, hello, network);
}
/// Returns a `PeerStatus` for some peer.
fn peer_status(&self, peer: PeerSyncInfo) -> PeerStatus {
let local = PeerSyncInfo::from(&self.chain);
if peer.has_different_network_id_to(local) {
return PeerStatus::DifferentNetworkId;
}
if local.has_higher_finalized_epoch_than(peer) {
let peer_finalized_slot = peer
.latest_finalized_epoch
.start_slot(self.chain.get_spec().slots_per_epoch);
let local_roots = self.chain.get_block_roots(peer_finalized_slot, 1, 0);
if let Ok(local_roots) = local_roots {
if let Some(local_root) = local_roots.get(0) {
if *local_root != peer.latest_finalized_root {
return PeerStatus::FinalizedEpochNotInChain;
}
} else {
error!(
self.log,
"Cannot get root for peer finalized slot.";
"error" => "empty roots"
);
}
} else {
error!(
self.log,
"Cannot get root for peer finalized slot.";
"error" => format!("{:?}", local_roots)
);
}
}
if peer.has_higher_finalized_epoch_than(local) {
PeerStatus::HigherFinalizedEpoch
} else if peer.has_higher_best_slot_than(local) {
PeerStatus::HigherBestSlot
} else {
PeerStatus::NotInteresting
} }
} }
pub fn validate_peer(&mut self, peer_id: PeerId, hello_message: HelloMessage) -> bool { /// Process a `Hello` message, requesting new blocks if appropriate.
// network id must match ///
if hello_message.network_id != self.chain_id { /// Disconnects the peer if required.
return false; fn process_hello(
} &mut self,
// compare latest epoch and finalized root to see if they exist in our chain peer_id: PeerId,
if hello_message.latest_finalized_epoch <= self.latest_finalized_epoch { hello: HelloMessage,
// ensure their finalized root is in our chain network: &mut NetworkContext,
// TODO: Get the finalized root at hello_message.latest_epoch and ensure they match ) {
//if (hello_message.latest_finalized_root == self.chain.get_state() { let spec = self.chain.get_spec();
// return false;
// } let remote = PeerSyncInfo::from(hello);
let local = PeerSyncInfo::from(&self.chain);
let remote_status = self.peer_status(remote);
if remote_status.should_handshake() {
info!(self.log, "HandshakeSuccess"; "peer" => format!("{:?}", peer_id));
self.known_peers.insert(peer_id.clone(), remote);
} else {
info!(
self.log, "HandshakeFailure";
"peer" => format!("{:?}", peer_id),
"reason" => "network_id"
);
network.disconnect(peer_id.clone(), GoodbyeReason::IrreleventNetwork);
} }
// the client is valid, add it to our list of known_peers and request sync if required // If required, send additional requests.
// update peer list if peer already exists match remote_status {
let peer_info = PeerSyncInfo { PeerStatus::HigherFinalizedEpoch => {
latest_finalized_root: hello_message.latest_finalized_root, let start_slot = remote
latest_finalized_epoch: hello_message.latest_finalized_epoch, .latest_finalized_epoch
best_root: hello_message.best_root, .start_slot(spec.slots_per_epoch);
best_slot: hello_message.best_slot, let required_slots = start_slot - local.best_slot;
self.request_block_roots(
peer_id,
BeaconBlockRootsRequest {
start_slot,
count: required_slots.into(),
},
network,
);
}
PeerStatus::HigherBestSlot => {
let required_slots = remote.best_slot - local.best_slot;
self.request_block_roots(
peer_id,
BeaconBlockRootsRequest {
start_slot: local.best_slot + 1,
count: required_slots.into(),
},
network,
);
}
PeerStatus::FinalizedEpochNotInChain => {}
PeerStatus::DifferentNetworkId => {}
PeerStatus::NotInteresting => {}
}
}
/// Handle a `BeaconBlockRoots` request from the peer.
pub fn on_beacon_block_roots_request(
&mut self,
peer_id: PeerId,
request_id: RequestId,
req: BeaconBlockRootsRequest,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockRootsRequest";
"peer" => format!("{:?}", peer_id),
"count" => req.count,
);
let roots = match self
.chain
.get_block_roots(req.start_slot, req.count as usize, 0)
{
Ok(roots) => roots,
Err(e) => {
// TODO: return RPC error.
warn!(
self.log,
"RPCRequest"; "peer" => format!("{:?}", peer_id),
"req" => "BeaconBlockRoots",
"error" => format!("{:?}", e)
);
return;
}
}; };
debug!(self.log, "Handshake successful. Peer: {:?}", peer_id); let roots = roots
self.known_peers.insert(peer_id, peer_info); .iter()
.enumerate()
.map(|(i, &block_root)| BlockRootSlot {
slot: req.start_slot + Slot::from(i),
block_root,
})
.collect();
// set state to sync network.send_rpc_response(
if self.state == SyncState::Idle peer_id,
&& hello_message.best_slot > self.latest_slot + SLOT_IMPORT_TOLERANCE request_id,
{ RPCResponse::BeaconBlockRoots(BeaconBlockRootsResponse { roots }),
self.state = SyncState::Downloading; )
//TODO: Start requesting blocks from known peers. Ideally in batches }
/// Handle a `BeaconBlockRoots` response from the peer.
pub fn on_beacon_block_roots_response(
&mut self,
peer_id: PeerId,
res: BeaconBlockRootsResponse,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockRootsResponse";
"peer" => format!("{:?}", peer_id),
"count" => res.roots.len(),
);
if res.roots.is_empty() {
warn!(
self.log,
"Peer returned empty block roots response. PeerId: {:?}", peer_id
);
return;
} }
true let new_root_index = self.import_queue.first_new_root(&res.roots);
// If a new block root is found, request it and all the headers following it.
//
// We make an assumption here that if we don't know a block then we don't know of all
// it's parents. This might not be the case if syncing becomes more sophisticated.
if let Some(i) = new_root_index {
let new = &res.roots[i];
self.request_block_headers(
peer_id,
BeaconBlockHeadersRequest {
start_root: new.block_root,
start_slot: new.slot,
max_headers: (res.roots.len() - i) as u64,
skip_slots: 0,
},
network,
)
}
}
/// Handle a `BeaconBlockHeaders` request from the peer.
pub fn on_beacon_block_headers_request(
&mut self,
peer_id: PeerId,
request_id: RequestId,
req: BeaconBlockHeadersRequest,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockHeadersRequest";
"peer" => format!("{:?}", peer_id),
"count" => req.max_headers,
);
let headers = match self.chain.get_block_headers(
req.start_slot,
req.max_headers as usize,
req.skip_slots as usize,
) {
Ok(headers) => headers,
Err(e) => {
// TODO: return RPC error.
warn!(
self.log,
"RPCRequest"; "peer" => format!("{:?}", peer_id),
"req" => "BeaconBlockHeaders",
"error" => format!("{:?}", e)
);
return;
}
};
network.send_rpc_response(
peer_id,
request_id,
RPCResponse::BeaconBlockHeaders(BeaconBlockHeadersResponse { headers }),
)
}
/// Handle a `BeaconBlockHeaders` response from the peer.
pub fn on_beacon_block_headers_response(
&mut self,
peer_id: PeerId,
res: BeaconBlockHeadersResponse,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockHeadersResponse";
"peer" => format!("{:?}", peer_id),
"count" => res.headers.len(),
);
if res.headers.is_empty() {
warn!(
self.log,
"Peer returned empty block headers response. PeerId: {:?}", peer_id
);
return;
}
// Enqueue the headers, obtaining a list of the roots of the headers which were newly added
// to the queue.
let block_roots = self
.import_queue
.enqueue_headers(res.headers, peer_id.clone());
self.request_block_bodies(peer_id, BeaconBlockBodiesRequest { block_roots }, network);
}
/// Handle a `BeaconBlockBodies` request from the peer.
pub fn on_beacon_block_bodies_request(
&mut self,
peer_id: PeerId,
request_id: RequestId,
req: BeaconBlockBodiesRequest,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockBodiesRequest";
"peer" => format!("{:?}", peer_id),
"count" => req.block_roots.len(),
);
let block_bodies = match self.chain.get_block_bodies(&req.block_roots) {
Ok(bodies) => bodies,
Err(e) => {
// TODO: return RPC error.
warn!(
self.log,
"RPCRequest"; "peer" => format!("{:?}", peer_id),
"req" => "BeaconBlockBodies",
"error" => format!("{:?}", e)
);
return;
}
};
network.send_rpc_response(
peer_id,
request_id,
RPCResponse::BeaconBlockBodies(BeaconBlockBodiesResponse { block_bodies }),
)
}
/// Handle a `BeaconBlockBodies` response from the peer.
pub fn on_beacon_block_bodies_response(
&mut self,
peer_id: PeerId,
res: BeaconBlockBodiesResponse,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockBodiesResponse";
"peer" => format!("{:?}", peer_id),
"count" => res.block_bodies.len(),
);
self.import_queue
.enqueue_bodies(res.block_bodies, peer_id.clone());
// Clear out old entries
self.import_queue.remove_stale();
// Import blocks, if possible.
self.process_import_queue(network);
}
/// Process a gossip message declaring a new block.
pub fn on_block_gossip(
&mut self,
peer_id: PeerId,
msg: BlockRootSlot,
network: &mut NetworkContext,
) {
debug!(
self.log,
"BlockSlot";
"peer" => format!("{:?}", peer_id),
);
// TODO: filter out messages that a prior to the finalized slot.
//
// TODO: if the block is a few more slots ahead, try to get all block roots from then until
// now.
//
// Note: only requests the new block -- will fail if we don't have its parents.
if self.import_queue.is_new_block(&msg.block_root) {
self.request_block_headers(
peer_id,
BeaconBlockHeadersRequest {
start_root: msg.block_root,
start_slot: msg.slot,
max_headers: 1,
skip_slots: 0,
},
network,
)
}
}
/// Process a gossip message declaring a new attestation.
///
/// Not currently implemented.
pub fn on_attestation_gossip(
&mut self,
peer_id: PeerId,
msg: Attestation,
_network: &mut NetworkContext,
) {
debug!(
self.log,
"Attestation";
"peer" => format!("{:?}", peer_id),
);
// Awaiting a proper operations pool before we can import attestations.
//
// https://github.com/sigp/lighthouse/issues/281
match self.chain.process_attestation(msg) {
Ok(_) => panic!("Impossible, method not implemented."),
Err(_) => error!(self.log, "Attestation processing not implemented!"),
}
}
/// Iterate through the `import_queue` and process any complete blocks.
///
/// If a block is successfully processed it is removed from the queue, otherwise it remains in
/// the queue.
pub fn process_import_queue(&mut self, network: &mut NetworkContext) {
let mut successful = 0;
let mut invalid = 0;
let mut errored = 0;
// Loop through all of the complete blocks in the queue.
for (block_root, block, sender) in self.import_queue.complete_blocks() {
match self.chain.process_block(block) {
Ok(outcome) => {
if outcome.is_invalid() {
invalid += 1;
warn!(
self.log,
"InvalidBlock";
"sender_peer_id" => format!("{:?}", sender),
"reason" => format!("{:?}", outcome),
);
network.disconnect(sender, GoodbyeReason::Fault);
}
// If this results to true, the item will be removed from the queue.
if outcome.sucessfully_processed() {
successful += 1;
self.import_queue.remove(block_root);
}
}
Err(e) => {
errored += 1;
error!(self.log, "BlockProcessingError"; "error" => format!("{:?}", e));
}
}
}
if successful > 0 {
info!(self.log, "Imported {} blocks", successful)
}
if invalid > 0 {
warn!(self.log, "Rejected {} invalid blocks", invalid)
}
if errored > 0 {
warn!(self.log, "Failed to process {} blocks", errored)
}
}
/// Request some `BeaconBlockRoots` from the remote peer.
fn request_block_roots(
&mut self,
peer_id: PeerId,
req: BeaconBlockRootsRequest,
network: &mut NetworkContext,
) {
// Potentially set state to sync.
if self.state == SyncState::Idle && req.count > SLOT_IMPORT_TOLERANCE {
debug!(self.log, "Entering downloading sync state.");
self.state = SyncState::Downloading;
}
debug!(
self.log,
"RPCRequest(BeaconBlockRoots)";
"count" => req.count,
"peer" => format!("{:?}", peer_id)
);
// TODO: handle count > max count.
network.send_rpc_request(peer_id.clone(), RPCRequest::BeaconBlockRoots(req));
}
/// Request some `BeaconBlockHeaders` from the remote peer.
fn request_block_headers(
&mut self,
peer_id: PeerId,
req: BeaconBlockHeadersRequest,
network: &mut NetworkContext,
) {
debug!(
self.log,
"RPCRequest(BeaconBlockHeaders)";
"max_headers" => req.max_headers,
"peer" => format!("{:?}", peer_id)
);
network.send_rpc_request(peer_id.clone(), RPCRequest::BeaconBlockHeaders(req));
}
/// Request some `BeaconBlockBodies` from the remote peer.
fn request_block_bodies(
&mut self,
peer_id: PeerId,
req: BeaconBlockBodiesRequest,
network: &mut NetworkContext,
) {
debug!(
self.log,
"RPCRequest(BeaconBlockBodies)";
"count" => req.block_roots.len(),
"peer" => format!("{:?}", peer_id)
);
network.send_rpc_request(peer_id.clone(), RPCRequest::BeaconBlockBodies(req));
}
/// Generates our current state in the form of a HELLO RPC message.
pub fn generate_hello(&self) -> HelloMessage {
self.chain.hello_message()
} }
} }

View File

@ -0,0 +1,570 @@
use crossbeam_channel::{unbounded, Receiver, RecvTimeoutError, Sender};
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::rpc::{RPCMethod, RPCRequest, RPCResponse, RequestId};
use eth2_libp2p::{PeerId, RPCEvent};
use network::beacon_chain::BeaconChain as NetworkBeaconChain;
use network::message_handler::{HandlerMessage, MessageHandler};
use network::service::{NetworkMessage, OutgoingMessage};
use sloggers::terminal::{Destination, TerminalLoggerBuilder};
use sloggers::types::Severity;
use sloggers::Build;
use std::time::Duration;
use test_harness::BeaconChainHarness;
use tokio::runtime::TaskExecutor;
use types::{test_utils::TestingBeaconStateBuilder, *};
pub struct SyncNode {
pub id: usize,
sender: Sender<HandlerMessage>,
receiver: Receiver<NetworkMessage>,
peer_id: PeerId,
harness: BeaconChainHarness,
}
impl SyncNode {
fn from_beacon_state_builder(
id: usize,
executor: &TaskExecutor,
state_builder: TestingBeaconStateBuilder,
spec: &ChainSpec,
logger: slog::Logger,
) -> Self {
let harness = BeaconChainHarness::from_beacon_state_builder(state_builder, spec.clone());
let (network_sender, network_receiver) = unbounded();
let message_handler_sender = MessageHandler::spawn(
harness.beacon_chain.clone(),
network_sender,
executor,
logger,
)
.unwrap();
Self {
id,
sender: message_handler_sender,
receiver: network_receiver,
peer_id: PeerId::random(),
harness,
}
}
fn increment_beacon_chain_slot(&mut self) {
self.harness.increment_beacon_chain_slot();
}
fn send(&self, message: HandlerMessage) {
self.sender.send(message).unwrap();
}
fn recv(&self) -> Result<NetworkMessage, RecvTimeoutError> {
self.receiver.recv_timeout(Duration::from_millis(500))
}
fn hello_message(&self) -> HelloMessage {
self.harness.beacon_chain.hello_message()
}
pub fn connect_to(&mut self, node: &SyncNode) {
let message = HandlerMessage::PeerDialed(self.peer_id.clone());
node.send(message);
}
/// Reads the receive queue from one node and passes the message to the other. Also returns a
/// copy of the message.
///
/// self -----> node
/// |
/// us
///
/// Named after the unix `tee` command.
fn tee(&mut self, node: &SyncNode) -> NetworkMessage {
let network_message = self.recv().expect("Timeout on tee");
let handler_message = match network_message.clone() {
NetworkMessage::Send(_to_peer_id, OutgoingMessage::RPC(event)) => {
HandlerMessage::RPC(self.peer_id.clone(), event)
}
_ => panic!("tee cannot parse {:?}", network_message),
};
node.send(handler_message);
network_message
}
fn tee_hello_request(&mut self, node: &SyncNode) -> HelloMessage {
let request = self.tee_rpc_request(node);
match request {
RPCRequest::Hello(message) => message,
_ => panic!("tee_hello_request got: {:?}", request),
}
}
fn tee_hello_response(&mut self, node: &SyncNode) -> HelloMessage {
let response = self.tee_rpc_response(node);
match response {
RPCResponse::Hello(message) => message,
_ => panic!("tee_hello_response got: {:?}", response),
}
}
fn tee_block_root_request(&mut self, node: &SyncNode) -> BeaconBlockRootsRequest {
let msg = self.tee_rpc_request(node);
match msg {
RPCRequest::BeaconBlockRoots(data) => data,
_ => panic!("tee_block_root_request got: {:?}", msg),
}
}
fn tee_block_root_response(&mut self, node: &SyncNode) -> BeaconBlockRootsResponse {
let msg = self.tee_rpc_response(node);
match msg {
RPCResponse::BeaconBlockRoots(data) => data,
_ => panic!("tee_block_root_response got: {:?}", msg),
}
}
fn tee_block_header_request(&mut self, node: &SyncNode) -> BeaconBlockHeadersRequest {
let msg = self.tee_rpc_request(node);
match msg {
RPCRequest::BeaconBlockHeaders(data) => data,
_ => panic!("tee_block_header_request got: {:?}", msg),
}
}
fn tee_block_header_response(&mut self, node: &SyncNode) -> BeaconBlockHeadersResponse {
let msg = self.tee_rpc_response(node);
match msg {
RPCResponse::BeaconBlockHeaders(data) => data,
_ => panic!("tee_block_header_response got: {:?}", msg),
}
}
fn tee_block_body_request(&mut self, node: &SyncNode) -> BeaconBlockBodiesRequest {
let msg = self.tee_rpc_request(node);
match msg {
RPCRequest::BeaconBlockBodies(data) => data,
_ => panic!("tee_block_body_request got: {:?}", msg),
}
}
fn tee_block_body_response(&mut self, node: &SyncNode) -> BeaconBlockBodiesResponse {
let msg = self.tee_rpc_response(node);
match msg {
RPCResponse::BeaconBlockBodies(data) => data,
_ => panic!("tee_block_body_response got: {:?}", msg),
}
}
fn tee_rpc_request(&mut self, node: &SyncNode) -> RPCRequest {
let network_message = self.tee(node);
match network_message {
NetworkMessage::Send(
_peer_id,
OutgoingMessage::RPC(RPCEvent::Request {
id: _,
method_id: _,
body,
}),
) => body,
_ => panic!("tee_rpc_request failed! got {:?}", network_message),
}
}
fn tee_rpc_response(&mut self, node: &SyncNode) -> RPCResponse {
let network_message = self.tee(node);
match network_message {
NetworkMessage::Send(
_peer_id,
OutgoingMessage::RPC(RPCEvent::Response {
id: _,
method_id: _,
result,
}),
) => result,
_ => panic!("tee_rpc_response failed! got {:?}", network_message),
}
}
pub fn get_block_root_request(&self) -> BeaconBlockRootsRequest {
let request = self.recv_rpc_request().expect("No block root request");
match request {
RPCRequest::BeaconBlockRoots(request) => request,
_ => panic!("Did not get block root request"),
}
}
pub fn get_block_headers_request(&self) -> BeaconBlockHeadersRequest {
let request = self.recv_rpc_request().expect("No block headers request");
match request {
RPCRequest::BeaconBlockHeaders(request) => request,
_ => panic!("Did not get block headers request"),
}
}
pub fn get_block_bodies_request(&self) -> BeaconBlockBodiesRequest {
let request = self.recv_rpc_request().expect("No block bodies request");
match request {
RPCRequest::BeaconBlockBodies(request) => request,
_ => panic!("Did not get block bodies request"),
}
}
fn _recv_rpc_response(&self) -> Result<RPCResponse, RecvTimeoutError> {
let network_message = self.recv()?;
Ok(match network_message {
NetworkMessage::Send(
_peer_id,
OutgoingMessage::RPC(RPCEvent::Response {
id: _,
method_id: _,
result,
}),
) => result,
_ => panic!("get_rpc_response failed! got {:?}", network_message),
})
}
fn recv_rpc_request(&self) -> Result<RPCRequest, RecvTimeoutError> {
let network_message = self.recv()?;
Ok(match network_message {
NetworkMessage::Send(
_peer_id,
OutgoingMessage::RPC(RPCEvent::Request {
id: _,
method_id: _,
body,
}),
) => body,
_ => panic!("get_rpc_request failed! got {:?}", network_message),
})
}
}
fn get_logger() -> slog::Logger {
let mut builder = TerminalLoggerBuilder::new();
builder.level(Severity::Debug);
builder.destination(Destination::Stderr);
builder.build().unwrap()
}
pub struct SyncMaster {
harness: BeaconChainHarness,
peer_id: PeerId,
response_ids: Vec<RequestId>,
}
impl SyncMaster {
fn from_beacon_state_builder(
state_builder: TestingBeaconStateBuilder,
node_count: usize,
spec: &ChainSpec,
) -> Self {
let harness = BeaconChainHarness::from_beacon_state_builder(state_builder, spec.clone());
let peer_id = PeerId::random();
let response_ids = vec![RequestId::from(0); node_count];
Self {
harness,
peer_id,
response_ids,
}
}
pub fn response_id(&mut self, node: &SyncNode) -> RequestId {
let id = self.response_ids[node.id].clone();
self.response_ids[node.id].increment();
id
}
pub fn do_hello_with(&mut self, node: &SyncNode) {
let message = HandlerMessage::PeerDialed(self.peer_id.clone());
node.send(message);
let request = node.recv_rpc_request().expect("No hello response");
match request {
RPCRequest::Hello(_hello) => {
let hello = self.harness.beacon_chain.hello_message();
let response = self.rpc_response(node, RPCResponse::Hello(hello));
node.send(response);
}
_ => panic!("Got message other than hello from node."),
}
}
pub fn respond_to_block_roots_request(
&mut self,
node: &SyncNode,
request: BeaconBlockRootsRequest,
) {
let roots = self
.harness
.beacon_chain
.get_block_roots(request.start_slot, request.count as usize, 0)
.expect("Beacon chain did not give block roots")
.iter()
.enumerate()
.map(|(i, root)| BlockRootSlot {
block_root: *root,
slot: Slot::from(i) + request.start_slot,
})
.collect();
let response = RPCResponse::BeaconBlockRoots(BeaconBlockRootsResponse { roots });
self.send_rpc_response(node, response)
}
pub fn respond_to_block_headers_request(
&mut self,
node: &SyncNode,
request: BeaconBlockHeadersRequest,
) {
let roots = self
.harness
.beacon_chain
.get_block_roots(
request.start_slot,
request.max_headers as usize,
request.skip_slots as usize,
)
.expect("Beacon chain did not give blocks");
if roots.is_empty() {
panic!("Roots was empty when trying to get headers.")
}
assert_eq!(
roots[0], request.start_root,
"Got the wrong start root when getting headers"
);
let headers: Vec<BeaconBlockHeader> = roots
.iter()
.map(|root| {
let block = self
.harness
.beacon_chain
.get_block(root)
.expect("Failed to load block")
.expect("Block did not exist");
block.block_header()
})
.collect();
let response = RPCResponse::BeaconBlockHeaders(BeaconBlockHeadersResponse { headers });
self.send_rpc_response(node, response)
}
pub fn respond_to_block_bodies_request(
&mut self,
node: &SyncNode,
request: BeaconBlockBodiesRequest,
) {
let block_bodies: Vec<BeaconBlockBody> = request
.block_roots
.iter()
.map(|root| {
let block = self
.harness
.beacon_chain
.get_block(root)
.expect("Failed to load block")
.expect("Block did not exist");
block.body
})
.collect();
let response = RPCResponse::BeaconBlockBodies(BeaconBlockBodiesResponse { block_bodies });
self.send_rpc_response(node, response)
}
fn send_rpc_response(&mut self, node: &SyncNode, rpc_response: RPCResponse) {
node.send(self.rpc_response(node, rpc_response));
}
fn rpc_response(&mut self, node: &SyncNode, rpc_response: RPCResponse) -> HandlerMessage {
HandlerMessage::RPC(
self.peer_id.clone(),
RPCEvent::Response {
id: self.response_id(node),
method_id: RPCMethod::Hello.into(),
result: rpc_response,
},
)
}
}
fn test_setup(
state_builder: TestingBeaconStateBuilder,
node_count: usize,
spec: &ChainSpec,
logger: slog::Logger,
) -> (tokio::runtime::Runtime, SyncMaster, Vec<SyncNode>) {
let runtime = tokio::runtime::Runtime::new().unwrap();
let mut nodes = Vec::with_capacity(node_count);
for id in 0..node_count {
let node = SyncNode::from_beacon_state_builder(
id,
&runtime.executor(),
state_builder.clone(),
&spec,
logger.clone(),
);
nodes.push(node);
}
let master = SyncMaster::from_beacon_state_builder(state_builder, node_count, &spec);
(runtime, master, nodes)
}
pub fn build_blocks(blocks: usize, master: &mut SyncMaster, nodes: &mut Vec<SyncNode>) {
for _ in 0..blocks {
master.harness.advance_chain_with_block();
for i in 0..nodes.len() {
nodes[i].increment_beacon_chain_slot();
}
}
master.harness.run_fork_choice();
for i in 0..nodes.len() {
nodes[i].harness.run_fork_choice();
}
}
#[test]
#[ignore]
fn sync_node_with_master() {
let logger = get_logger();
let spec = ChainSpec::few_validators();
let validator_count = 8;
let node_count = 1;
let state_builder =
TestingBeaconStateBuilder::from_default_keypairs_file_if_exists(validator_count, &spec);
let (runtime, mut master, mut nodes) =
test_setup(state_builder, node_count, &spec, logger.clone());
let original_node_slot = nodes[0].hello_message().best_slot;
build_blocks(2, &mut master, &mut nodes);
master.do_hello_with(&nodes[0]);
let roots_request = nodes[0].get_block_root_request();
assert_eq!(roots_request.start_slot, original_node_slot + 1);
assert_eq!(roots_request.count, 2);
master.respond_to_block_roots_request(&nodes[0], roots_request);
let headers_request = nodes[0].get_block_headers_request();
assert_eq!(headers_request.start_slot, original_node_slot + 1);
assert_eq!(headers_request.max_headers, 2);
assert_eq!(headers_request.skip_slots, 0);
master.respond_to_block_headers_request(&nodes[0], headers_request);
let bodies_request = nodes[0].get_block_bodies_request();
assert_eq!(bodies_request.block_roots.len(), 2);
master.respond_to_block_bodies_request(&nodes[0], bodies_request);
std::thread::sleep(Duration::from_millis(10000));
runtime.shutdown_now();
}
#[test]
#[ignore]
fn sync_two_nodes() {
let logger = get_logger();
let spec = ChainSpec::few_validators();
let validator_count = 8;
let node_count = 2;
let state_builder =
TestingBeaconStateBuilder::from_default_keypairs_file_if_exists(validator_count, &spec);
let (runtime, _master, mut nodes) =
test_setup(state_builder, node_count, &spec, logger.clone());
// let original_node_slot = nodes[0].hello_message().best_slot;
let mut node_a = nodes.remove(0);
let mut node_b = nodes.remove(0);
let blocks = 2;
// Node A builds out a longer, better chain.
for _ in 0..blocks {
// Node A should build a block.
node_a.harness.advance_chain_with_block();
// Node B should just increment it's slot without a block.
node_b.harness.increment_beacon_chain_slot();
}
node_a.harness.run_fork_choice();
// A connects to B.
node_a.connect_to(&node_b);
// B says hello to A.
node_b.tee_hello_request(&node_a);
// A says hello back.
node_a.tee_hello_response(&node_b);
// B requests block roots from A.
node_b.tee_block_root_request(&node_a);
// A provides block roots to A.
node_a.tee_block_root_response(&node_b);
// B requests block headers from A.
node_b.tee_block_header_request(&node_a);
// A provides block headers to B.
node_a.tee_block_header_response(&node_b);
// B requests block bodies from A.
node_b.tee_block_body_request(&node_a);
// A provides block bodies to B.
node_a.tee_block_body_response(&node_b);
std::thread::sleep(Duration::from_secs(10));
node_b.harness.run_fork_choice();
let node_a_chain = node_a
.harness
.beacon_chain
.chain_dump()
.expect("Can't dump node a chain");
let node_b_chain = node_b
.harness
.beacon_chain
.chain_dump()
.expect("Can't dump node b chain");
assert_eq!(
node_a_chain.len(),
node_b_chain.len(),
"Chains should be equal length"
);
assert_eq!(node_a_chain, node_b_chain, "Chains should be identical");
runtime.shutdown_now();
}

View File

@ -7,6 +7,8 @@ edition = "2018"
[dependencies] [dependencies]
bls = { path = "../../eth2/utils/bls" } bls = { path = "../../eth2/utils/bls" }
beacon_chain = { path = "../beacon_chain" } beacon_chain = { path = "../beacon_chain" }
network = { path = "../network" }
eth2-libp2p = { path = "../eth2-libp2p" }
version = { path = "../version" } version = { path = "../version" }
types = { path = "../../eth2/types" } types = { path = "../../eth2/types" }
ssz = { path = "../../eth2/utils/ssz" } ssz = { path = "../../eth2/utils/ssz" }
@ -23,3 +25,4 @@ slog-term = "^2.4.0"
slog-async = "^2.3.0" slog-async = "^2.3.0"
tokio = "0.1.17" tokio = "0.1.17"
exit-future = "0.1.4" exit-future = "0.1.4"
crossbeam-channel = "0.3.8"

View File

@ -1,14 +1,20 @@
use crossbeam_channel;
use eth2_libp2p::rpc::methods::BlockRootSlot;
use eth2_libp2p::PubsubMessage;
use futures::Future; use futures::Future;
use grpcio::{RpcContext, UnarySink}; use grpcio::{RpcContext, UnarySink};
use network::NetworkMessage;
use protos::services::{ use protos::services::{
BeaconBlock as BeaconBlockProto, ProduceBeaconBlockRequest, ProduceBeaconBlockResponse, BeaconBlock as BeaconBlockProto, ProduceBeaconBlockRequest, ProduceBeaconBlockResponse,
PublishBeaconBlockRequest, PublishBeaconBlockResponse, PublishBeaconBlockRequest, PublishBeaconBlockResponse,
}; };
use protos::services_grpc::BeaconBlockService; use protos::services_grpc::BeaconBlockService;
use slog::Logger; use slog::Logger;
use types::{Hash256, Slot};
#[derive(Clone)] #[derive(Clone)]
pub struct BeaconBlockServiceInstance { pub struct BeaconBlockServiceInstance {
pub network_chan: crossbeam_channel::Sender<NetworkMessage>,
pub log: Logger, pub log: Logger,
} }
@ -43,7 +49,22 @@ impl BeaconBlockService for BeaconBlockServiceInstance {
req: PublishBeaconBlockRequest, req: PublishBeaconBlockRequest,
sink: UnarySink<PublishBeaconBlockResponse>, sink: UnarySink<PublishBeaconBlockResponse>,
) { ) {
println!("publishing {:?}", req.get_block()); let block = req.get_block();
let block_root = Hash256::from_slice(block.get_block_root());
let block_slot = BlockRootSlot {
block_root,
slot: Slot::from(block.get_slot()),
};
println!("publishing block with root {:?}", block_root);
// TODO: Obtain topics from the network service properly.
let topic = types::TopicBuilder::new("beacon_chain".to_string()).build();
let message = PubsubMessage::Block(block_slot);
println!("Sending beacon block to gossipsub");
self.network_chan.send(NetworkMessage::Publish {
topics: vec![topic],
message,
});
// TODO: actually process the block. // TODO: actually process the block.
let mut resp = PublishBeaconBlockResponse::new(); let mut resp = PublishBeaconBlockResponse::new();

View File

@ -11,6 +11,7 @@ use self::validator::ValidatorServiceInstance;
pub use config::Config as RPCConfig; pub use config::Config as RPCConfig;
use futures::{future, Future}; use futures::{future, Future};
use grpcio::{Environment, Server, ServerBuilder}; use grpcio::{Environment, Server, ServerBuilder};
use network::NetworkMessage;
use protos::services_grpc::{ use protos::services_grpc::{
create_beacon_block_service, create_beacon_node_service, create_validator_service, create_beacon_block_service, create_beacon_node_service, create_validator_service,
}; };
@ -21,6 +22,7 @@ use tokio::runtime::TaskExecutor;
pub fn start_server( pub fn start_server(
config: &RPCConfig, config: &RPCConfig,
executor: &TaskExecutor, executor: &TaskExecutor,
network_chan: crossbeam_channel::Sender<NetworkMessage>,
beacon_chain: Arc<BeaconChain>, beacon_chain: Arc<BeaconChain>,
log: &slog::Logger, log: &slog::Logger,
) -> exit_future::Signal { ) -> exit_future::Signal {
@ -40,11 +42,17 @@ pub fn start_server(
}; };
let beacon_block_service = { let beacon_block_service = {
let instance = BeaconBlockServiceInstance { log: log.clone() }; let instance = BeaconBlockServiceInstance {
network_chan,
log: log.clone(),
};
create_beacon_block_service(instance) create_beacon_block_service(instance)
}; };
let validator_service = { let validator_service = {
let instance = ValidatorServiceInstance { log: log.clone() }; let instance = ValidatorServiceInstance {
chain: beacon_chain.clone(),
log: log.clone(),
};
create_validator_service(instance) create_validator_service(instance)
}; };

View File

@ -1,60 +1,139 @@
use crate::beacon_chain::BeaconChain;
use bls::PublicKey; use bls::PublicKey;
use futures::Future; use futures::Future;
use grpcio::{RpcContext, RpcStatus, RpcStatusCode, UnarySink}; use grpcio::{RpcContext, RpcStatus, RpcStatusCode, UnarySink};
use protos::services::{ use protos::services::{ActiveValidator, GetDutiesRequest, GetDutiesResponse, ValidatorDuty};
IndexResponse, ProposeBlockSlotRequest, ProposeBlockSlotResponse, PublicKey as PublicKeyRequest,
};
use protos::services_grpc::ValidatorService; use protos::services_grpc::ValidatorService;
use slog::{debug, Logger}; use slog::{debug, Logger};
use ssz::Decodable; use ssz::Decodable;
use std::sync::Arc;
#[derive(Clone)] #[derive(Clone)]
pub struct ValidatorServiceInstance { pub struct ValidatorServiceInstance {
pub chain: Arc<BeaconChain>,
pub log: Logger, pub log: Logger,
} }
//TODO: Refactor Errors
impl ValidatorService for ValidatorServiceInstance { impl ValidatorService for ValidatorServiceInstance {
fn validator_index( /// 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
/// need to attest to.
fn get_validator_duties(
&mut self, &mut self,
ctx: RpcContext, ctx: RpcContext,
req: PublicKeyRequest, req: GetDutiesRequest,
sink: UnarySink<IndexResponse>, sink: UnarySink<GetDutiesResponse>,
) { ) {
if let Ok((public_key, _)) = PublicKey::ssz_decode(req.get_public_key(), 0) { let validators = req.get_validators();
debug!(self.log, "RPC request"; "endpoint" => "ValidatorIndex", "public_key" => public_key.concatenated_hex_id()); debug!(self.log, "RPC request"; "endpoint" => "GetValidatorDuties", "epoch" => req.get_epoch());
let mut resp = IndexResponse::new(); let epoch = req.get_epoch();
let mut resp = GetDutiesResponse::new();
let resp_validators = resp.mut_active_validators();
// TODO: return a legit value. let spec = self.chain.get_spec();
resp.set_index(1); let state = self.chain.get_state();
let f = sink //TODO: Decide whether to rebuild the cache
.success(resp) //TODO: Get the active validator indicies
.map_err(move |e| println!("failed to reply {:?}: {:?}", req, e)); //let active_validator_indices = self.chain.state.read().get_cached_active_validator_indices(
ctx.spawn(f) let active_validator_indices = vec![1, 2, 3, 4, 5, 6, 7, 8];
} else { // TODO: Is this the most efficient? Perhaps we cache this data structure.
let f = sink
.fail(RpcStatus::new( // this is an array of validators who are to propose this epoch
RpcStatusCode::InvalidArgument, // TODO: RelativeEpoch?
Some("Invalid public_key".to_string()), //let validator_proposers = [0..spec.slots_per_epoch].iter().map(|slot| state.get_beacon_proposer_index(Slot::from(slot), epoch, &spec)).collect();
)) let validator_proposers: Vec<u64> = vec![1, 2, 3, 4, 5];
.map_err(move |e| println!("failed to reply {:?}: {:?}", req, e));
ctx.spawn(f) // get the duties for each validator
for validator_pk in validators.get_public_keys() {
let mut active_validator = ActiveValidator::new();
let public_key = match PublicKey::ssz_decode(validator_pk, 0) {
Ok((v, _index)) => v,
Err(_) => {
let f = sink
.fail(RpcStatus::new(
RpcStatusCode::InvalidArgument,
Some("Invalid public_key".to_string()),
))
//TODO: Handle error correctly
.map_err(move |e| println!("failed to reply {:?}: {:?}", req, e));
return ctx.spawn(f);
}
};
// is the validator active
let val_index = match state.get_validator_index(&public_key) {
Ok(Some(index)) => {
if active_validator_indices.contains(&index) {
// validator is active, return the index
index
} else {
// validator is inactive, go to the next validator
active_validator.set_none(false);
resp_validators.push(active_validator);
break;
}
}
// validator index is not known, skip it
Ok(_) => {
active_validator.set_none(false);
resp_validators.push(active_validator);
break;
}
// the cache is not built, throw an error
Err(_) => {
let f = sink
.fail(RpcStatus::new(
RpcStatusCode::FailedPrecondition,
Some("Beacon state cache is not built".to_string()),
))
//TODO: Handle error correctly
.map_err(move |e| println!("failed to reply {:?}: {:?}", req, e));
return ctx.spawn(f);
}
};
// we have an active validator, set its duties
let mut duty = ValidatorDuty::new();
// check if the validator needs to propose a block
if let Some(slot) = validator_proposers
.iter()
.position(|&v| val_index as u64 == v)
{
duty.set_block_production_slot(epoch * spec.slots_per_epoch + slot as u64);
} else {
// no blocks to propose this epoch
duty.set_none(false)
}
// get attestation duties
let attestation_duties = match state.get_attestation_duties(val_index, &spec) {
Ok(Some(v)) => v,
Ok(_) => unreachable!(), //we've checked the validator index
// the cache is not built, throw an error
Err(_) => {
let f = sink
.fail(RpcStatus::new(
RpcStatusCode::FailedPrecondition,
Some("Beacon state cache is not built".to_string()),
))
//TODO: Handle error correctly
.map_err(move |e| println!("failed to reply {:?}: {:?}", req, e));
return ctx.spawn(f);
}
};
duty.set_committee_index(attestation_duties.committee_index as u64);
duty.set_attestation_slot(attestation_duties.slot.as_u64());
duty.set_attestation_shard(attestation_duties.shard);
active_validator.set_duty(duty);
resp_validators.push(active_validator);
} }
}
fn propose_block_slot(
&mut self,
ctx: RpcContext,
req: ProposeBlockSlotRequest,
sink: UnarySink<ProposeBlockSlotResponse>,
) {
debug!(self.log, "RPC request"; "endpoint" => "ProposeBlockSlot", "epoch" => req.get_epoch(), "validator_index" => req.get_validator_index());
let mut resp = ProposeBlockSlotResponse::new();
// TODO: return a legit value.
resp.set_slot(1);
let f = sink let f = sink
.success(resp) .success(resp)

View File

@ -1,10 +1,10 @@
pub mod test_utils; pub mod test_utils;
mod traits; mod traits;
use slot_clock::SlotClock;
use ssz::TreeHash; use ssz::TreeHash;
use std::sync::Arc; use std::sync::Arc;
use types::{AttestationData, AttestationDataAndCustodyBit, FreeAttestation, Signature, Slot}; use types::{AttestationData, AttestationDataAndCustodyBit, Attestation, Signature,
AggregateSignature, Slot, AttestationDuty, Bitfield};
pub use self::traits::{ pub use self::traits::{
BeaconNode, BeaconNodeError, DutiesReader, DutiesReaderError, PublishOutcome, Signer, BeaconNode, BeaconNodeError, DutiesReader, DutiesReaderError, PublishOutcome, Signer,
@ -41,89 +41,58 @@ pub enum Error {
/// Ensures that messages are not slashable. /// Ensures that messages are not slashable.
/// ///
/// Relies upon an external service to keep the `EpochDutiesMap` updated. /// Relies upon an external service to keep the `EpochDutiesMap` updated.
pub struct Attester<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> { pub struct Attester<U: BeaconNode, W: Signer> {
pub last_processed_slot: Option<Slot>, pub last_processed_slot: Option<Slot>,
duties: Arc<V>,
slot_clock: Arc<T>,
beacon_node: Arc<U>, beacon_node: Arc<U>,
signer: Arc<W>, signer: Arc<W>,
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> Attester<T, U, V, W> { impl<U: BeaconNode, W: Signer> Attester<U, W> {
/// Returns a new instance where `last_processed_slot == 0`. /// Returns a new instance where `last_processed_slot == 0`.
pub fn new(duties: Arc<V>, slot_clock: Arc<T>, beacon_node: Arc<U>, signer: Arc<W>) -> Self { pub fn new(beacon_node: Arc<U>, signer: Arc<W>) -> Self {
Self { Self {
last_processed_slot: None, last_processed_slot: None,
duties,
slot_clock,
beacon_node, beacon_node,
signer, signer,
} }
} }
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> Attester<T, U, V, W> { impl<B: BeaconNode, W: Signer> Attester<B, W> {
/// Poll the `BeaconNode` and produce an attestation if required.
pub fn poll(&mut self) -> Result<PollOutcome, Error> {
let slot = self
.slot_clock
.present_slot()
.map_err(|_| Error::SlotClockError)?
.ok_or(Error::SlotUnknowable)?;
if !self.is_processed_slot(slot) { fn produce_attestation(&mut self, attestation_duty: AttestationDuty) -> Result<PollOutcome, Error> {
self.last_processed_slot = Some(slot); let attestation_data = match self.beacon_node.produce_attestation_data(
attestation_duty.slot,
let shard = match self.duties.attestation_shard(slot) { attestation_duty.shard
Ok(Some(result)) => result, )? {
Ok(None) => return Ok(PollOutcome::AttestationNotRequired(slot)),
Err(DutiesReaderError::UnknownEpoch) => {
return Ok(PollOutcome::ProducerDutiesUnknown(slot));
}
Err(DutiesReaderError::UnknownValidator) => {
return Ok(PollOutcome::ValidatorIsUnknown(slot));
}
Err(DutiesReaderError::EpochLengthIsZero) => return Err(Error::EpochLengthIsZero),
Err(DutiesReaderError::Poisoned) => return Err(Error::EpochMapPoisoned),
};
self.produce_attestation(slot, shard)
} else {
Ok(PollOutcome::SlotAlreadyProcessed(slot))
}
}
fn produce_attestation(&mut self, slot: Slot, shard: u64) -> Result<PollOutcome, Error> {
let attestation_data = match self.beacon_node.produce_attestation_data(slot, shard)? {
Some(attestation_data) => attestation_data, Some(attestation_data) => attestation_data,
None => return Ok(PollOutcome::BeaconNodeUnableToProduceAttestation(slot)), None => return Ok(PollOutcome::BeaconNodeUnableToProduceAttestation(attestation_duty.slot)),
}; };
dbg!(&attestation_data); dbg!(&attestation_data);
if !self.safe_to_produce(&attestation_data) { if !self.safe_to_produce(&attestation_data) {
return Ok(PollOutcome::SlashableAttestationNotProduced(slot)); return Ok(PollOutcome::SlashableAttestationNotProduced(attestation_duty.slot));
} }
let signature = match self.sign_attestation_data(&attestation_data) { let signature = match self.sign_attestation_data(&attestation_data) {
Some(signature) => signature, Some(signature) => signature,
None => return Ok(PollOutcome::SignerRejection(slot)), None => return Ok(PollOutcome::SignerRejection(attestation_duty.slot)),
}; };
let mut agg_sig = AggregateSignature::new();
agg_sig.add(&signature);
let validator_index = match self.duties.validator_index() {
Some(validator_index) => validator_index,
None => return Ok(PollOutcome::ValidatorIsUnknown(slot)),
};
let free_attestation = FreeAttestation { let attestation = Attestation {
aggregation_bitfield: Bitfield::new(),
data: attestation_data, data: attestation_data,
signature, custody_bitfield: Bitfield::from_elem(8, PHASE_0_CUSTODY_BIT),
validator_index, aggregate_signature: agg_sig,
}; };
self.beacon_node self.beacon_node
.publish_attestation(free_attestation)?; .publish_attestation(attestation)?;
Ok(PollOutcome::AttestationProduced(slot)) Ok(PollOutcome::AttestationProduced(attestation_duty.slot))
} }
fn is_processed_slot(&self, slot: Slot) -> bool { fn is_processed_slot(&self, slot: Slot) -> bool {
@ -182,7 +151,6 @@ impl From<BeaconNodeError> for Error {
mod tests { mod tests {
use super::test_utils::{EpochMap, LocalSigner, SimulatedBeaconNode}; use super::test_utils::{EpochMap, LocalSigner, SimulatedBeaconNode};
use super::*; use super::*;
use slot_clock::TestingSlotClock;
use types::{ use types::{
test_utils::{SeedableRng, TestRandom, XorShiftRng}, test_utils::{SeedableRng, TestRandom, XorShiftRng},
ChainSpec, Keypair, ChainSpec, Keypair,
@ -198,21 +166,14 @@ mod tests {
let mut rng = XorShiftRng::from_seed([42; 16]); let mut rng = XorShiftRng::from_seed([42; 16]);
let spec = Arc::new(ChainSpec::foundation()); let spec = Arc::new(ChainSpec::foundation());
let slot_clock = Arc::new(TestingSlotClock::new(0));
let beacon_node = Arc::new(SimulatedBeaconNode::default()); let beacon_node = Arc::new(SimulatedBeaconNode::default());
let signer = Arc::new(LocalSigner::new(Keypair::random())); let signer = Arc::new(LocalSigner::new(Keypair::random()));
let mut duties = EpochMap::new(spec.slots_per_epoch);
let attest_slot = Slot::new(100); let attest_slot = Slot::new(100);
let attest_epoch = attest_slot / spec.slots_per_epoch; let attest_epoch = attest_slot / spec.slots_per_epoch;
let attest_shard = 12; let attest_shard = 12;
duties.insert_attestation_shard(attest_slot, attest_shard);
duties.set_validator_index(Some(2));
let duties = Arc::new(duties);
let mut attester = Attester::new( let mut attester = Attester::new(
duties.clone(),
slot_clock.clone(),
beacon_node.clone(), beacon_node.clone(),
signer.clone(), signer.clone(),
); );
@ -221,6 +182,9 @@ mod tests {
beacon_node.set_next_produce_result(Ok(Some(AttestationData::random_for_test(&mut rng)))); beacon_node.set_next_produce_result(Ok(Some(AttestationData::random_for_test(&mut rng))));
beacon_node.set_next_publish_result(Ok(PublishOutcome::ValidAttestation)); beacon_node.set_next_publish_result(Ok(PublishOutcome::ValidAttestation));
/*
* All these tests are broken because we no longer have a slot clock in the attester
// One slot before attestation slot... // One slot before attestation slot...
slot_clock.set_slot(attest_slot.as_u64() - 1); slot_clock.set_slot(attest_slot.as_u64() - 1);
assert_eq!( assert_eq!(
@ -256,5 +220,7 @@ mod tests {
attester.poll(), attester.poll(),
Ok(PollOutcome::ProducerDutiesUnknown(slot)) Ok(PollOutcome::ProducerDutiesUnknown(slot))
); );
*/
} }
} }

View File

@ -1,6 +1,6 @@
use crate::traits::{BeaconNode, BeaconNodeError, PublishOutcome}; use crate::traits::{BeaconNode, BeaconNodeError, PublishOutcome};
use std::sync::RwLock; use std::sync::RwLock;
use types::{AttestationData, FreeAttestation, Slot}; use types::{AttestationData, Attestation, Slot};
type ProduceResult = Result<Option<AttestationData>, BeaconNodeError>; type ProduceResult = Result<Option<AttestationData>, BeaconNodeError>;
type PublishResult = Result<PublishOutcome, BeaconNodeError>; type PublishResult = Result<PublishOutcome, BeaconNodeError>;
@ -11,7 +11,7 @@ pub struct SimulatedBeaconNode {
pub produce_input: RwLock<Option<(Slot, u64)>>, pub produce_input: RwLock<Option<(Slot, u64)>>,
pub produce_result: RwLock<Option<ProduceResult>>, pub produce_result: RwLock<Option<ProduceResult>>,
pub publish_input: RwLock<Option<FreeAttestation>>, pub publish_input: RwLock<Option<Attestation>>,
pub publish_result: RwLock<Option<PublishResult>>, pub publish_result: RwLock<Option<PublishResult>>,
} }
@ -34,8 +34,8 @@ impl BeaconNode for SimulatedBeaconNode {
} }
} }
fn publish_attestation(&self, free_attestation: FreeAttestation) -> PublishResult { fn publish_attestation(&self, attestation: Attestation) -> PublishResult {
*self.publish_input.write().unwrap() = Some(free_attestation.clone()); *self.publish_input.write().unwrap() = Some(attestation.clone());
match *self.publish_result.read().unwrap() { match *self.publish_result.read().unwrap() {
Some(ref r) => r.clone(), Some(ref r) => r.clone(),
None => panic!("TestBeaconNode: publish_result == None"), None => panic!("TestBeaconNode: publish_result == None"),

View File

@ -1,4 +1,4 @@
use types::{AttestationData, FreeAttestation, Signature, Slot}; use types::{AttestationData, Attestation, Signature, Slot};
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
pub enum BeaconNodeError { pub enum BeaconNodeError {
@ -22,7 +22,7 @@ pub trait BeaconNode: Send + Sync {
fn publish_attestation( fn publish_attestation(
&self, &self,
free_attestation: FreeAttestation, attestation: Attestation,
) -> Result<PublishOutcome, BeaconNodeError>; ) -> Result<PublishOutcome, BeaconNodeError>;
} }

View File

@ -4,7 +4,7 @@ mod traits;
use slot_clock::SlotClock; use slot_clock::SlotClock;
use ssz::{SignedRoot, TreeHash}; use ssz::{SignedRoot, TreeHash};
use std::sync::Arc; use std::sync::Arc;
use types::{BeaconBlock, ChainSpec, Domain, Slot}; use types::{BeaconBlock, ChainSpec, Domain, Slot, Fork};
pub use self::traits::{ pub use self::traits::{
BeaconNode, BeaconNodeError, DutiesReader, DutiesReaderError, PublishOutcome, Signer, BeaconNode, BeaconNodeError, DutiesReader, DutiesReaderError, PublishOutcome, Signer,
@ -48,36 +48,32 @@ pub enum Error {
/// Ensures that messages are not slashable. /// Ensures that messages are not slashable.
/// ///
/// Relies upon an external service to keep the `EpochDutiesMap` updated. /// Relies upon an external service to keep the `EpochDutiesMap` updated.
pub struct BlockProducer<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> { pub struct BlockProducer<U: BeaconNode, W: Signer> {
pub last_processed_slot: Option<Slot>, pub last_processed_slot: Option<Slot>,
spec: Arc<ChainSpec>, spec: Arc<ChainSpec>,
epoch_map: Arc<V>,
slot_clock: Arc<T>,
beacon_node: Arc<U>, beacon_node: Arc<U>,
signer: Arc<W>, signer: Arc<W>,
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducer<T, U, V, W> { impl<U: BeaconNode, W: Signer> BlockProducer<U, W> {
/// Returns a new instance where `last_processed_slot == 0`. /// Returns a new instance where `last_processed_slot == 0`.
pub fn new( pub fn new(
spec: Arc<ChainSpec>, spec: Arc<ChainSpec>,
epoch_map: Arc<V>,
slot_clock: Arc<T>,
beacon_node: Arc<U>, beacon_node: Arc<U>,
signer: Arc<W>, signer: Arc<W>,
) -> Self { ) -> Self {
Self { Self {
last_processed_slot: None, last_processed_slot: None,
spec, spec,
epoch_map,
slot_clock,
beacon_node, beacon_node,
signer, signer,
} }
} }
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducer<T, U, V, W> { impl<U: BeaconNode, W: Signer> BlockProducer<U, W> {
/* No longer needed because we don't poll any more
/// "Poll" to see if the validator is required to take any action. /// "Poll" to see if the validator is required to take any action.
/// ///
/// The slot clock will be read and any new actions undertaken. /// The slot clock will be read and any new actions undertaken.
@ -113,6 +109,7 @@ impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducer<T, U
Ok(PollOutcome::SlotAlreadyProcessed(slot)) Ok(PollOutcome::SlotAlreadyProcessed(slot))
} }
} }
*/
fn is_processed_slot(&self, slot: Slot) -> bool { fn is_processed_slot(&self, slot: Slot) -> bool {
match self.last_processed_slot { match self.last_processed_slot {
@ -131,11 +128,7 @@ impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducer<T, U
/// ///
/// The slash-protection code is not yet implemented. There is zero protection against /// The slash-protection code is not yet implemented. There is zero protection against
/// slashing. /// slashing.
fn produce_block(&mut self, slot: Slot) -> Result<PollOutcome, Error> { fn produce_block(&mut self, slot: Slot, fork: Fork) -> Result<PollOutcome, Error> {
let fork = match self.epoch_map.fork() {
Ok(fork) => fork,
Err(_) => return Ok(PollOutcome::UnableToGetFork(slot)),
};
let randao_reveal = { let randao_reveal = {
// TODO: add domain, etc to this message. Also ensure result matches `into_to_bytes32`. // TODO: add domain, etc to this message. Also ensure result matches `into_to_bytes32`.
@ -242,20 +235,12 @@ mod tests {
let mut rng = XorShiftRng::from_seed([42; 16]); let mut rng = XorShiftRng::from_seed([42; 16]);
let spec = Arc::new(ChainSpec::foundation()); let spec = Arc::new(ChainSpec::foundation());
let slot_clock = Arc::new(TestingSlotClock::new(0));
let beacon_node = Arc::new(SimulatedBeaconNode::default()); let beacon_node = Arc::new(SimulatedBeaconNode::default());
let signer = Arc::new(LocalSigner::new(Keypair::random())); let signer = Arc::new(LocalSigner::new(Keypair::random()));
let mut epoch_map = EpochMap::new(spec.slots_per_epoch);
let produce_slot = Slot::new(100);
let produce_epoch = produce_slot.epoch(spec.slots_per_epoch);
epoch_map.map.insert(produce_epoch, produce_slot);
let epoch_map = Arc::new(epoch_map);
let mut block_proposer = BlockProducer::new( let mut block_proposer = BlockProducer::new(
spec.clone(), spec.clone(),
epoch_map.clone(),
slot_clock.clone(),
beacon_node.clone(), beacon_node.clone(),
signer.clone(), signer.clone(),
); );

View File

@ -6,4 +6,5 @@ pub struct AttestationDuty {
pub slot: Slot, pub slot: Slot,
pub shard: Shard, pub shard: Shard,
pub committee_index: usize, pub committee_index: usize,
pub validator_index: usize,
} }

View File

@ -37,6 +37,19 @@ impl BeaconBlockHeader {
pub fn canonical_root(&self) -> Hash256 { pub fn canonical_root(&self) -> Hash256 {
Hash256::from_slice(&self.hash_tree_root()[..]) Hash256::from_slice(&self.hash_tree_root()[..])
} }
/// Given a `body`, consumes `self` and returns a complete `BeaconBlock`.
///
/// Spec v0.5.0
pub fn into_block(self, body: BeaconBlockBody) -> BeaconBlock {
BeaconBlock {
slot: self.slot,
previous_block_root: self.previous_block_root,
state_root: self.state_root,
body,
signature: self.signature,
}
}
} }
#[cfg(test)] #[cfg(test)]

View File

@ -92,6 +92,7 @@ impl EpochCache {
slot, slot,
shard, shard,
committee_index: k, committee_index: k,
validator_index: *validator_index,
}; };
attestation_duties[*validator_index] = Some(attestation_duty) attestation_duties[*validator_index] = Some(attestation_duty)
} }

View File

@ -85,6 +85,6 @@ pub type AttesterMap = HashMap<(u64, u64), Vec<usize>>;
pub type ProposerMap = HashMap<u64, usize>; pub type ProposerMap = HashMap<u64, usize>;
pub use bls::{AggregatePublicKey, AggregateSignature, Keypair, PublicKey, SecretKey, Signature}; pub use bls::{AggregatePublicKey, AggregateSignature, Keypair, PublicKey, SecretKey, Signature};
pub use libp2p::floodsub::{Topic, TopicBuilder}; pub use libp2p::floodsub::{Topic, TopicBuilder, TopicHash};
pub use libp2p::multiaddr; pub use libp2p::multiaddr;
pub use libp2p::Multiaddr; pub use libp2p::Multiaddr;

View File

@ -23,6 +23,7 @@ pub fn keypairs_path() -> PathBuf {
/// Builds a beacon state to be used for testing purposes. /// Builds a beacon state to be used for testing purposes.
/// ///
/// This struct should **never be used for production purposes.** /// This struct should **never be used for production purposes.**
#[derive(Clone)]
pub struct TestingBeaconStateBuilder { pub struct TestingBeaconStateBuilder {
state: BeaconState, state: BeaconState,
keypairs: Vec<Keypair>, keypairs: Vec<Keypair>,

View File

@ -0,0 +1,117 @@
use super::{fake_signature::FakeSignature, AggregatePublicKey};
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use serde_hex::{encode as hex_encode, PrefixedHexVisitor};
use ssz::{
decode_ssz_list, hash, ssz_encode, Decodable, DecodeError, Encodable, SszStream, TreeHash,
};
const SIGNATURE_LENGTH: usize = 48;
/// A BLS aggregate signature.
///
/// This struct is a wrapper upon a base type and provides helper functions (e.g., SSZ
/// serialization).
#[derive(Debug, PartialEq, Clone, Default, Eq)]
pub struct FakeAggregateSignature {
bytes: Vec<u8>,
}
impl FakeAggregateSignature {
/// Creates a new all-zero's signature
pub fn new() -> Self {
Self::zero()
}
/// Creates a new all-zero's signature
pub fn zero() -> Self {
Self {
bytes: vec![0; SIGNATURE_LENGTH],
}
}
/// Does glorious nothing.
pub fn add(&mut self, _signature: &FakeSignature) {
// Do nothing.
}
/// _Always_ returns `true`.
pub fn verify(
&self,
_msg: &[u8],
_domain: u64,
_aggregate_public_key: &AggregatePublicKey,
) -> bool {
true
}
/// _Always_ returns `true`.
pub fn verify_multiple(
&self,
_messages: &[&[u8]],
_domain: u64,
_aggregate_public_keys: &[&AggregatePublicKey],
) -> bool {
true
}
}
impl Encodable for FakeAggregateSignature {
fn ssz_append(&self, s: &mut SszStream) {
s.append_vec(&self.bytes);
}
}
impl Decodable for FakeAggregateSignature {
fn ssz_decode(bytes: &[u8], i: usize) -> Result<(Self, usize), DecodeError> {
let (sig_bytes, i) = decode_ssz_list(bytes, i)?;
Ok((FakeAggregateSignature { bytes: sig_bytes }, i))
}
}
impl Serialize for FakeAggregateSignature {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_str(&hex_encode(ssz_encode(self)))
}
}
impl<'de> Deserialize<'de> for FakeAggregateSignature {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let bytes = deserializer.deserialize_str(PrefixedHexVisitor)?;
let (obj, _) = <_>::ssz_decode(&bytes[..], 0)
.map_err(|e| serde::de::Error::custom(format!("invalid ssz ({:?})", e)))?;
Ok(obj)
}
}
impl TreeHash for FakeAggregateSignature {
fn hash_tree_root(&self) -> Vec<u8> {
hash(&self.bytes)
}
}
#[cfg(test)]
mod tests {
use super::super::{Keypair, Signature};
use super::*;
use ssz::ssz_encode;
#[test]
pub fn test_ssz_round_trip() {
let keypair = Keypair::random();
let mut original = FakeAggregateSignature::new();
original.add(&Signature::new(&[42, 42], 0, &keypair.sk));
let bytes = ssz_encode(&original);
let (decoded, _) = FakeAggregateSignature::ssz_decode(&bytes, 0).unwrap();
assert_eq!(original, decoded);
}
}

View File

@ -0,0 +1,117 @@
use super::serde_vistors::HexVisitor;
use super::{PublicKey, SecretKey};
use hex::encode as hex_encode;
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use ssz::{
decode_ssz_list, hash, ssz_encode, Decodable, DecodeError, Encodable, SszStream, TreeHash,
};
const SIGNATURE_LENGTH: usize = 48;
/// A single BLS signature.
///
/// This struct is a wrapper upon a base type and provides helper functions (e.g., SSZ
/// serialization).
#[derive(Debug, PartialEq, Clone, Eq)]
pub struct FakeSignature {
bytes: Vec<u8>,
}
impl FakeSignature {
/// Creates a new all-zero's signature
pub fn new(_msg: &[u8], _domain: u64, _sk: &SecretKey) -> Self {
FakeSignature::zero()
}
/// Creates a new all-zero's signature
pub fn zero() -> Self {
Self {
bytes: vec![0; SIGNATURE_LENGTH],
}
}
/// Creates a new all-zero's signature
pub fn new_hashed(_x_real_hashed: &[u8], _x_imaginary_hashed: &[u8], _sk: &SecretKey) -> Self {
FakeSignature::zero()
}
/// _Always_ returns `true`.
pub fn verify(&self, _msg: &[u8], _domain: u64, _pk: &PublicKey) -> bool {
true
}
/// _Always_ returns true.
pub fn verify_hashed(
&self,
_x_real_hashed: &[u8],
_x_imaginary_hashed: &[u8],
_pk: &PublicKey,
) -> bool {
true
}
/// Returns a new empty signature.
pub fn empty_signature() -> Self {
FakeSignature::zero()
}
}
impl Encodable for FakeSignature {
fn ssz_append(&self, s: &mut SszStream) {
s.append_vec(&self.bytes);
}
}
impl Decodable for FakeSignature {
fn ssz_decode(bytes: &[u8], i: usize) -> Result<(Self, usize), DecodeError> {
let (sig_bytes, i) = decode_ssz_list(bytes, i)?;
Ok((FakeSignature { bytes: sig_bytes }, i))
}
}
impl TreeHash for FakeSignature {
fn hash_tree_root(&self) -> Vec<u8> {
hash(&self.bytes)
}
}
impl Serialize for FakeSignature {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.serialize_str(&hex_encode(ssz_encode(self)))
}
}
impl<'de> Deserialize<'de> for FakeSignature {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let bytes = deserializer.deserialize_str(HexVisitor)?;
let (pubkey, _) = <_>::ssz_decode(&bytes[..], 0)
.map_err(|e| serde::de::Error::custom(format!("invalid ssz ({:?})", e)))?;
Ok(pubkey)
}
}
#[cfg(test)]
mod tests {
use super::super::Keypair;
use super::*;
use ssz::ssz_encode;
#[test]
pub fn test_ssz_round_trip() {
let keypair = Keypair::random();
let original = FakeSignature::new(&[42, 42], 0, &keypair.sk);
let bytes = ssz_encode(&original);
let (decoded, _) = FakeSignature::ssz_decode(&bytes, 0).unwrap();
assert_eq!(original, decoded);
}
}

View File

@ -1,5 +1,6 @@
use super::{PublicKey, SecretKey}; use super::{PublicKey, SecretKey};
use serde_derive::{Deserialize, Serialize}; use serde_derive::{Deserialize, Serialize};
use std::hash::{Hash, Hasher};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)] #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Keypair { pub struct Keypair {
@ -19,3 +20,15 @@ impl Keypair {
self.pk.concatenated_hex_id() self.pk.concatenated_hex_id()
} }
} }
impl Hash for Keypair {
/// Note: this is distinct from consensus serialization, it will produce a different hash.
///
/// This method uses the uncompressed bytes, which are much faster to obtain than the
/// compressed bytes required for consensus serialization.
///
/// Use `ssz::Encode` to obtain the bytes required for consensus hashing.
fn hash<H: Hasher>(&self, state: &mut H) {
self.pk.as_uncompressed_bytes().hash(state)
}
}

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@ -2,19 +2,33 @@ extern crate bls_aggregates;
extern crate ssz; extern crate ssz;
mod aggregate_public_key; mod aggregate_public_key;
mod aggregate_signature;
mod keypair; mod keypair;
mod public_key; mod public_key;
mod secret_key; mod secret_key;
mod serde_vistors; mod serde_vistors;
#[cfg(not(debug_assertions))]
mod aggregate_signature;
#[cfg(not(debug_assertions))]
mod signature; mod signature;
#[cfg(not(debug_assertions))]
pub use crate::aggregate_signature::AggregateSignature;
#[cfg(not(debug_assertions))]
pub use crate::signature::Signature;
#[cfg(debug_assertions)]
mod fake_aggregate_signature;
#[cfg(debug_assertions)]
mod fake_signature;
#[cfg(debug_assertions)]
pub use crate::fake_aggregate_signature::FakeAggregateSignature as AggregateSignature;
#[cfg(debug_assertions)]
pub use crate::fake_signature::FakeSignature as Signature;
pub use crate::aggregate_public_key::AggregatePublicKey; pub use crate::aggregate_public_key::AggregatePublicKey;
pub use crate::aggregate_signature::AggregateSignature;
pub use crate::keypair::Keypair; pub use crate::keypair::Keypair;
pub use crate::public_key::PublicKey; pub use crate::public_key::PublicKey;
pub use crate::secret_key::SecretKey; pub use crate::secret_key::SecretKey;
pub use crate::signature::Signature;
pub const BLS_AGG_SIG_BYTE_SIZE: usize = 96; pub const BLS_AGG_SIG_BYTE_SIZE: usize = 96;

View File

@ -26,9 +26,9 @@ service BeaconBlockService {
/// Service that provides the validator client with requisite knowledge about /// Service that provides the validator client with requisite knowledge about
//its public keys //its public keys
service ValidatorService { service ValidatorService {
rpc ProposeBlockSlot(ProposeBlockSlotRequest) returns (ProposeBlockSlotResponse); // Gets the block proposer slot and comittee slot that a validator needs to
rpc ValidatorIndex(PublicKey) returns (IndexResponse); // perform work on.
// rpc ValidatorAssignment(ValidatorAssignmentRequest) returns (ValidatorAssignmentResponse); rpc GetValidatorDuties(GetDutiesRequest) returns (GetDutiesResponse);
} }
/// Service that handles validator attestations /// Service that handles validator attestations
@ -92,47 +92,41 @@ message BeaconBlock {
/* /*
* Validator Service Messages * Validator Service Messages
*/ */
/*
message ValidatorAssignmentRequest {
uint64 epoch = 1;
bytes validator_index = 2;
}
// A validators duties for some epoch.
// TODO: add shard duties.
message ValidatorAssignment {
oneof block_production_slot_oneof {
bool block_production_slot_none = 1;
uint64 block_production_slot = 2;
}
}
*/
// Validator Assignment // Validator Assignment
message PublicKey { // the public keys of the validators
bytes public_key = 1; message Validators {
repeated bytes public_keys = 1;
} }
message IndexResponse {
uint64 index = 1;
}
// Propose slot // Propose slot
message GetDutiesRequest {
message ProposeBlockSlotRequest {
uint64 epoch = 1; uint64 epoch = 1;
uint64 validator_index = 2; Validators validators = 2;
} }
message ProposeBlockSlotResponse { message GetDutiesResponse {
oneof slot_oneof { repeated ActiveValidator active_validators = 1;
}
message ActiveValidator {
oneof duty_oneof {
bool none = 1; bool none = 1;
uint64 slot = 2; ValidatorDuty duty = 2;
} }
} }
message ValidatorDuty {
oneof block_oneof {
bool none = 1;
uint64 block_production_slot = 2;
}
uint64 attestation_slot = 3;
uint64 attestation_shard = 4;
uint64 committee_index = 5;
uint64 validator_index = 6;
}
/* /*
* Attestation Service Messages * Attestation Service Messages

View File

@ -32,3 +32,4 @@ tokio = "0.1.18"
tokio-timer = "0.2.10" tokio-timer = "0.2.10"
error-chain = "0.12.0" error-chain = "0.12.0"
bincode = "^1.1.2" bincode = "^1.1.2"
futures = "0.1.25"

View File

@ -3,7 +3,7 @@ use std::sync::Arc;
use attester::{BeaconNode, BeaconNodeError, PublishOutcome}; use attester::{BeaconNode, BeaconNodeError, PublishOutcome};
use protos::services::ProduceAttestationDataRequest; use protos::services::ProduceAttestationDataRequest;
use types::{AttestationData, FreeAttestation, Slot}; use types::{AttestationData, Attestation, Slot};
pub struct AttestationGrpcClient { pub struct AttestationGrpcClient {
client: Arc<AttestationServiceClient>, client: Arc<AttestationServiceClient>,
@ -36,7 +36,7 @@ impl BeaconNode for AttestationGrpcClient {
fn publish_attestation( fn publish_attestation(
&self, &self,
free_attestation: FreeAttestation, attestation: Attestation,
) -> Result<PublishOutcome, BeaconNodeError> { ) -> Result<PublishOutcome, BeaconNodeError> {
// TODO: return correct PublishOutcome // TODO: return correct PublishOutcome
Err(BeaconNodeError::DecodeFailure) Err(BeaconNodeError::DecodeFailure)

View File

@ -6,18 +6,19 @@ use std::time::Duration;
pub use self::attestation_grpc_client::AttestationGrpcClient; pub use self::attestation_grpc_client::AttestationGrpcClient;
pub struct AttesterService<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> { pub struct AttesterService<U: BeaconNode, W: Signer> {
pub attester: Attester<T, U, V, W>, pub attester: Attester<U, W>,
pub poll_interval_millis: u64, pub poll_interval_millis: u64,
pub log: Logger, pub log: Logger,
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> AttesterService<T, U, V, W> { impl<U: BeaconNode, W: Signer> AttesterService<U, W> {
/// Run a loop which polls the Attester each `poll_interval_millis` millseconds. /// Run a loop which polls the Attester each `poll_interval_millis` millseconds.
/// ///
/// Logs the results of the polls. /// Logs the results of the polls.
pub fn run(&mut self) { pub fn run(&mut self) {
loop { loop {
/* We don't do the polling any more...
match self.attester.poll() { match self.attester.poll() {
Err(error) => { Err(error) => {
error!(self.log, "Attester poll error"; "error" => format!("{:?}", error)) error!(self.log, "Attester poll error"; "error" => format!("{:?}", error))
@ -47,7 +48,8 @@ impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> AttesterService<T,
error!(self.log, "The Beacon Node does not recognise the validator"; "slot" => slot) error!(self.log, "The Beacon Node does not recognise the validator"; "slot" => slot)
} }
}; };
*/
println!("Legacy polling still happening...");
std::thread::sleep(Duration::from_millis(self.poll_interval_millis)); std::thread::sleep(Duration::from_millis(self.poll_interval_millis));
} }
} }

View File

@ -10,18 +10,19 @@ use std::time::Duration;
pub use self::beacon_block_grpc_client::BeaconBlockGrpcClient; pub use self::beacon_block_grpc_client::BeaconBlockGrpcClient;
pub struct BlockProducerService<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> { pub struct BlockProducerService<U: BeaconNode, W: Signer> {
pub block_producer: BlockProducer<T, U, V, W>, pub block_producer: BlockProducer<U, W>,
pub poll_interval_millis: u64, pub poll_interval_millis: u64,
pub log: Logger, pub log: Logger,
} }
impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducerService<T, U, V, W> { impl<U: BeaconNode, W: Signer> BlockProducerService<U, W> {
/// Run a loop which polls the block producer each `poll_interval_millis` millseconds. /// Run a loop which polls the block producer each `poll_interval_millis` millseconds.
/// ///
/// Logs the results of the polls. /// Logs the results of the polls.
pub fn run(&mut self) { pub fn run(&mut self) {
loop { loop {
/* Don't do polling any more
match self.block_producer.poll() { match self.block_producer.poll() {
Err(error) => { Err(error) => {
error!(self.log, "Block producer poll error"; "error" => format!("{:?}", error)) error!(self.log, "Block producer poll error"; "error" => format!("{:?}", error))
@ -54,7 +55,9 @@ impl<T: SlotClock, U: BeaconNode, V: DutiesReader, W: Signer> BlockProducerServi
error!(self.log, "Unable to get a `Fork` struct to generate signature domains"; "slot" => slot) error!(self.log, "Unable to get a `Fork` struct to generate signature domains"; "slot" => slot)
} }
}; };
*/
println!("Legacy polling still happening...");
std::thread::sleep(Duration::from_millis(self.poll_interval_millis)); std::thread::sleep(Duration::from_millis(self.poll_interval_millis));
} }
} }

View File

@ -1,90 +1,125 @@
use block_proposer::{DutiesReader, DutiesReaderError};
use std::collections::HashMap; use std::collections::HashMap;
use std::sync::RwLock; use std::ops::{Deref, DerefMut};
use types::{Epoch, Fork, Slot}; use types::{AttestationDuty, Epoch, Keypair, Slot};
/// When work needs to be performed by a validator, this type is given back to the main service
/// which indicates all the information that required to process the work.
///
/// Note: This is calculated per slot, so a validator knows which slot is related to this struct.
#[derive(Debug, Clone)]
pub struct WorkInfo {
/// Validator needs to produce a block.
pub produce_block: bool,
/// Validator needs to produce an attestation. This supplies the required attestation data.
pub attestation_duty: Option<AttestationDuty>,
}
/// The information required for a validator to propose and attest during some epoch. /// The information required for a validator to propose and attest during some epoch.
/// ///
/// Generally obtained from a Beacon Node, this information contains the validators canonical index /// Generally obtained from a Beacon Node, this information contains the validators canonical index
/// (thier sequence in the global validator induction process) and the "shuffling" for that index /// (their sequence in the global validator induction process) and the "shuffling" for that index
/// for some epoch. /// for some epoch.
#[derive(Debug, PartialEq, Clone, Copy, Default)] #[derive(Debug, PartialEq, Clone, Copy, Default)]
pub struct EpochDuties { pub struct EpochDuty {
pub validator_index: u64,
pub block_production_slot: Option<Slot>, pub block_production_slot: Option<Slot>,
// Future shard info pub attestation_slot: Slot,
pub attestation_shard: u64,
pub committee_index: u64,
pub validator_index: u64,
} }
impl EpochDuties { impl EpochDuty {
/// Returns `true` if the supplied `slot` is a slot in which the validator should produce a /// Returns `WorkInfo` if work needs to be done in the supplied `slot`
/// block. pub fn is_work_slot(&self, slot: Slot) -> Option<WorkInfo> {
pub fn is_block_production_slot(&self, slot: Slot) -> bool { // if validator is required to produce a slot return true
match self.block_production_slot { let produce_block = match self.block_production_slot {
Some(s) if s == slot => true, Some(s) if s == slot => true,
_ => false, _ => false,
};
// if the validator is required to attest to a shard, create the data
let mut attestation_duty = None;
if self.attestation_slot == slot {
attestation_duty = Some(AttestationDuty {
slot,
shard: self.attestation_shard,
committee_index: self.committee_index as usize,
validator_index: self.validator_index as usize
});
} }
if produce_block | attestation_duty.is_some() {
return Some(WorkInfo {
produce_block,
attestation_duty,
});
}
None
} }
} }
/// Maps a list of Keypairs (many validators) to an EpochDuty.
pub type EpochDuties = HashMap<Keypair, Option<EpochDuty>>;
pub enum EpochDutiesMapError { pub enum EpochDutiesMapError {
Poisoned, Poisoned,
UnknownEpoch,
UnknownValidator,
} }
/// Maps an `epoch` to some `EpochDuties` for a single validator. /// Maps an `epoch` to some `EpochDuties` for a single validator.
pub struct EpochDutiesMap { pub struct EpochDutiesMap {
pub slots_per_epoch: u64, pub slots_per_epoch: u64,
pub map: RwLock<HashMap<Epoch, EpochDuties>>, pub map: HashMap<Epoch, EpochDuties>,
} }
impl EpochDutiesMap { impl EpochDutiesMap {
pub fn new(slots_per_epoch: u64) -> Self { pub fn new(slots_per_epoch: u64) -> Self {
Self { Self {
slots_per_epoch, slots_per_epoch,
map: RwLock::new(HashMap::new()), map: HashMap::new(),
} }
} }
pub fn get(&self, epoch: Epoch) -> Result<Option<EpochDuties>, EpochDutiesMapError> {
let map = self.map.read().map_err(|_| EpochDutiesMapError::Poisoned)?;
match map.get(&epoch) {
Some(duties) => Ok(Some(*duties)),
None => Ok(None),
}
}
pub fn insert(
&self,
epoch: Epoch,
epoch_duties: EpochDuties,
) -> Result<Option<EpochDuties>, EpochDutiesMapError> {
let mut map = self
.map
.write()
.map_err(|_| EpochDutiesMapError::Poisoned)?;
Ok(map.insert(epoch, epoch_duties))
}
} }
impl DutiesReader for EpochDutiesMap { // Expose the hashmap methods
fn is_block_production_slot(&self, slot: Slot) -> Result<bool, DutiesReaderError> { impl Deref for EpochDutiesMap {
type Target = HashMap<Epoch, EpochDuties>;
fn deref(&self) -> &Self::Target {
&self.map
}
}
impl DerefMut for EpochDutiesMap {
fn deref_mut(&mut self) -> &mut HashMap<Epoch, EpochDuties> {
&mut self.map
}
}
impl EpochDutiesMap {
/// Checks if the validator has work to do.
pub fn is_work_slot(
&self,
slot: Slot,
signer: &Keypair,
) -> Result<Option<WorkInfo>, EpochDutiesMapError> {
let epoch = slot.epoch(self.slots_per_epoch); let epoch = slot.epoch(self.slots_per_epoch);
let map = self.map.read().map_err(|_| DutiesReaderError::Poisoned)?; let epoch_duties = self
let duties = map .map
.get(&epoch) .get(&epoch)
.ok_or_else(|| DutiesReaderError::UnknownEpoch)?; .ok_or_else(|| EpochDutiesMapError::UnknownEpoch)?;
Ok(duties.is_block_production_slot(slot)) if let Some(epoch_duty) = epoch_duties.get(signer) {
} if let Some(duty) = epoch_duty {
// Retrieves the duty for a validator at a given slot
fn fork(&self) -> Result<Fork, DutiesReaderError> { return Ok(duty.is_work_slot(slot));
// TODO: this is garbage data. } else {
// // the validator isn't active
// It will almost certainly cause signatures to fail verification. return Ok(None);
Ok(Fork { }
previous_version: [0; 4], } else {
current_version: [0; 4], // validator isn't known
epoch: Epoch::new(0), return Err(EpochDutiesMapError::UnknownValidator);
}) }
} }
} }

View File

@ -1,54 +1,56 @@
use super::epoch_duties::{EpochDuties, EpochDuty};
use super::traits::{BeaconNode, BeaconNodeError}; use super::traits::{BeaconNode, BeaconNodeError};
use super::EpochDuties; use protos::services::{GetDutiesRequest, Validators};
use protos::services::{ProposeBlockSlotRequest, PublicKey as IndexRequest};
use protos::services_grpc::ValidatorServiceClient; use protos::services_grpc::ValidatorServiceClient;
use ssz::ssz_encode; use ssz::ssz_encode;
use types::{Epoch, PublicKey, Slot}; use std::collections::HashMap;
use types::{Epoch, Keypair, Slot};
impl BeaconNode for ValidatorServiceClient { impl BeaconNode for ValidatorServiceClient {
/// Request the shuffling from the Beacon Node (BN). /// Requests all duties (block signing and committee attesting) from the Beacon Node (BN).
/// fn request_duties(
/// As this function takes a `PublicKey`, it will first attempt to resolve the public key into
/// a validator index, then call the BN for production/attestation duties.
///
/// Note: presently only block production information is returned.
fn request_shuffling(
&self, &self,
epoch: Epoch, epoch: Epoch,
public_key: &PublicKey, signers: &[Keypair],
) -> Result<Option<EpochDuties>, BeaconNodeError> { ) -> Result<EpochDuties, BeaconNodeError> {
// Lookup the validator index for the supplied public key. // Get the required duties from all validators
let validator_index = { // build the request
let mut req = IndexRequest::new(); let mut req = GetDutiesRequest::new();
req.set_public_key(ssz_encode(public_key).to_vec());
let resp = self
.validator_index(&req)
.map_err(|err| BeaconNodeError::RemoteFailure(format!("{:?}", err)))?;
resp.get_index()
};
let mut req = ProposeBlockSlotRequest::new();
req.set_validator_index(validator_index);
req.set_epoch(epoch.as_u64()); req.set_epoch(epoch.as_u64());
let mut validators = Validators::new();
validators.set_public_keys(signers.iter().map(|v| ssz_encode(&v.pk)).collect());
req.set_validators(validators);
// send the request, get the duties reply
let reply = self let reply = self
.propose_block_slot(&req) .get_validator_duties(&req)
.map_err(|err| BeaconNodeError::RemoteFailure(format!("{:?}", err)))?; .map_err(|err| BeaconNodeError::RemoteFailure(format!("{:?}", err)))?;
let block_production_slot = if reply.has_slot() { let mut epoch_duties: HashMap<Keypair, Option<EpochDuty>> = HashMap::new();
Some(reply.get_slot()) for (index, validator_duty) in reply.get_active_validators().iter().enumerate() {
} else { if !validator_duty.has_duty() {
None // validator is inactive
}; epoch_duties.insert(signers[index].clone(), None);
break;
let block_production_slot = match block_production_slot { }
Some(slot) => Some(Slot::new(slot)), // active validator
None => None, let active_duty = validator_duty.get_duty();
}; let block_production_slot = {
if active_duty.has_block_production_slot() {
Ok(Some(EpochDuties { Some(Slot::from(active_duty.get_block_production_slot()))
validator_index, } else {
block_production_slot, None
})) }
};
let epoch_duty = EpochDuty {
block_production_slot,
attestation_slot: Slot::from(active_duty.get_attestation_slot()),
attestation_shard: active_duty.get_attestation_shard(),
committee_index: active_duty.get_committee_index(),
validator_index: active_duty.get_validator_index(),
};
epoch_duties.insert(signers[index].clone(), Some(epoch_duty));
}
Ok(epoch_duties)
} }
} }

View File

@ -1,18 +1,20 @@
mod epoch_duties; mod epoch_duties;
mod grpc; mod grpc;
#[cfg(test)] // TODO: reintroduce tests
mod test_node; //#[cfg(test)]
//mod test_node;
mod traits; mod traits;
pub use self::epoch_duties::EpochDutiesMap;
use self::epoch_duties::{EpochDuties, EpochDutiesMapError}; use self::epoch_duties::{EpochDuties, EpochDutiesMapError};
pub use self::epoch_duties::{EpochDutiesMap, WorkInfo};
use self::traits::{BeaconNode, BeaconNodeError}; use self::traits::{BeaconNode, BeaconNodeError};
use bls::PublicKey; use futures::Async;
use slot_clock::SlotClock; use slog::{debug, error, info};
use std::sync::Arc; use std::sync::Arc;
use types::{ChainSpec, Epoch, Slot}; use std::sync::RwLock;
use types::{Epoch, Keypair, Slot};
#[derive(Debug, PartialEq, Clone, Copy)] #[derive(Debug, PartialEq, Clone)]
pub enum UpdateOutcome { pub enum UpdateOutcome {
/// The `EpochDuties` were not updated during this poll. /// The `EpochDuties` were not updated during this poll.
NoChange(Epoch), NoChange(Epoch),
@ -21,76 +23,116 @@ pub enum UpdateOutcome {
/// New `EpochDuties` were obtained, different to those which were previously known. This is /// New `EpochDuties` were obtained, different to those which were previously known. This is
/// likely to be the result of chain re-organisation. /// likely to be the result of chain re-organisation.
DutiesChanged(Epoch, EpochDuties), DutiesChanged(Epoch, EpochDuties),
/// The Beacon Node was unable to return the duties as the validator is unknown, or the
/// shuffling for the epoch is unknown.
UnknownValidatorOrEpoch(Epoch),
} }
#[derive(Debug, PartialEq)] #[derive(Debug, PartialEq)]
pub enum Error { pub enum Error {
SlotClockError, DutiesMapPoisoned,
SlotUnknowable,
EpochMapPoisoned, EpochMapPoisoned,
BeaconNodeError(BeaconNodeError), BeaconNodeError(BeaconNodeError),
UnknownEpoch,
UnknownValidator,
} }
/// A polling state machine which ensures the latest `EpochDuties` are obtained from the Beacon /// A polling state machine which ensures the latest `EpochDuties` are obtained from the Beacon
/// Node. /// Node.
/// ///
/// This keeps track of all validator keys and required voting slots. /// This keeps track of all validator keys and required voting slots.
pub struct DutiesManager<T: SlotClock, U: BeaconNode> { pub struct DutiesManager<U: BeaconNode> {
pub duties_map: Arc<EpochDutiesMap>, pub duties_map: RwLock<EpochDutiesMap>,
/// A list of all public keys known to the validator service. /// A list of all signer objects known to the validator service.
pub pubkeys: Vec<PublicKey>, // TODO: Generalise the signers, so that they're not just keypairs
pub spec: Arc<ChainSpec>, pub signers: Vec<Keypair>,
pub slot_clock: Arc<T>,
pub beacon_node: Arc<U>, pub beacon_node: Arc<U>,
} }
impl<T: SlotClock, U: BeaconNode> DutiesManager<T, U> { impl<U: BeaconNode> DutiesManager<U> {
/// Check the Beacon Node for `EpochDuties`. /// Check the Beacon Node for `EpochDuties`.
/// ///
/// The present `epoch` will be learned from the supplied `SlotClock`. In production this will
/// be a wall-clock (e.g., system time, remote server time, etc.). /// be a wall-clock (e.g., system time, remote server time, etc.).
pub fn update(&self, slot: Slot) -> Result<UpdateOutcome, Error> { fn update(&self, epoch: Epoch) -> Result<UpdateOutcome, Error> {
let epoch = slot.epoch(self.spec.slots_per_epoch); let duties = self.beacon_node.request_duties(epoch, &self.signers)?;
// If these duties were known, check to see if they're updates or identical.
if let Some(duties) = self if let Some(known_duties) = self.duties_map.read()?.get(&epoch) {
.beacon_node if *known_duties == duties {
.request_shuffling(epoch, &self.pubkeys[0])? return Ok(UpdateOutcome::NoChange(epoch));
{
// If these duties were known, check to see if they're updates or identical.
let result = if let Some(known_duties) = self.duties_map.get(epoch)? {
if known_duties == duties {
Ok(UpdateOutcome::NoChange(epoch))
} else {
Ok(UpdateOutcome::DutiesChanged(epoch, duties))
}
} else { } else {
Ok(UpdateOutcome::NewDuties(epoch, duties)) //TODO: Duties could be large here. Remove from display and avoid the clone.
}; self.duties_map.write()?.insert(epoch, duties.clone());
self.duties_map.insert(epoch, duties)?; return Ok(UpdateOutcome::DutiesChanged(epoch, duties));
result }
} else { } else {
Ok(UpdateOutcome::UnknownValidatorOrEpoch(epoch)) //TODO: Remove clone by removing duties from outcome
self.duties_map.write()?.insert(epoch, duties.clone());
return Ok(UpdateOutcome::NewDuties(epoch, duties));
};
}
/// A future wrapping around `update()`. This will perform logic based upon the update
/// process and complete once the update has completed.
pub fn run_update(&self, epoch: Epoch, log: slog::Logger) -> Result<Async<()>, ()> {
match self.update(epoch) {
Err(error) => error!(log, "Epoch duties poll error"; "error" => format!("{:?}", error)),
Ok(UpdateOutcome::NoChange(epoch)) => {
debug!(log, "No change in duties"; "epoch" => epoch)
}
Ok(UpdateOutcome::DutiesChanged(epoch, duties)) => {
info!(log, "Duties changed (potential re-org)"; "epoch" => epoch, "duties" => format!("{:?}", duties))
}
Ok(UpdateOutcome::NewDuties(epoch, duties)) => {
info!(log, "New duties obtained"; "epoch" => epoch, "duties" => format!("{:?}", duties))
}
};
Ok(Async::Ready(()))
}
/// Returns a list of (Public, WorkInfo) indicating all the validators that have work to perform
/// this slot.
pub fn get_current_work(&self, slot: Slot) -> Option<Vec<(Keypair, WorkInfo)>> {
let mut current_work: Vec<(Keypair, WorkInfo)> = Vec::new();
// if the map is poisoned, return None
let duties = self.duties_map.read().ok()?;
for validator_signer in &self.signers {
match duties.is_work_slot(slot, &validator_signer) {
Ok(Some(work_type)) => current_work.push((validator_signer.clone(), work_type)),
Ok(None) => {} // No work for this validator
//TODO: This should really log an error, as we shouldn't end up with an err here.
Err(_) => {} // Unknown epoch or validator, no work
}
} }
if current_work.is_empty() {
return None;
}
Some(current_work)
} }
} }
//TODO: Use error_chain to handle errors
impl From<BeaconNodeError> for Error { impl From<BeaconNodeError> for Error {
fn from(e: BeaconNodeError) -> Error { fn from(e: BeaconNodeError) -> Error {
Error::BeaconNodeError(e) Error::BeaconNodeError(e)
} }
} }
//TODO: Use error_chain to handle errors
impl<T> From<std::sync::PoisonError<T>> for Error {
fn from(_e: std::sync::PoisonError<T>) -> Error {
Error::DutiesMapPoisoned
}
}
impl From<EpochDutiesMapError> for Error { impl From<EpochDutiesMapError> for Error {
fn from(e: EpochDutiesMapError) -> Error { fn from(e: EpochDutiesMapError) -> Error {
match e { match e {
EpochDutiesMapError::Poisoned => Error::EpochMapPoisoned, EpochDutiesMapError::Poisoned => Error::EpochMapPoisoned,
EpochDutiesMapError::UnknownEpoch => Error::UnknownEpoch,
EpochDutiesMapError::UnknownValidator => Error::UnknownValidator,
} }
} }
} }
/* TODO: Modify tests for new Duties Manager form
#[cfg(test)] #[cfg(test)]
mod tests { mod tests {
use super::test_node::TestBeaconNode; use super::test_node::TestBeaconNode;
@ -104,6 +146,7 @@ mod tests {
// //
// These tests should serve as a good example for future tests. // These tests should serve as a good example for future tests.
#[test] #[test]
pub fn polling() { pub fn polling() {
let spec = Arc::new(ChainSpec::foundation()); let spec = Arc::new(ChainSpec::foundation());
@ -154,3 +197,4 @@ mod tests {
); );
} }
} }
*/

View File

@ -1,6 +1,5 @@
use super::EpochDuties; use super::EpochDuties;
use bls::PublicKey; use types::{Epoch, Keypair};
use types::Epoch;
#[derive(Debug, PartialEq, Clone)] #[derive(Debug, PartialEq, Clone)]
pub enum BeaconNodeError { pub enum BeaconNodeError {
@ -9,12 +8,13 @@ pub enum BeaconNodeError {
/// Defines the methods required to obtain a validators shuffling from a Beacon Node. /// Defines the methods required to obtain a validators shuffling from a Beacon Node.
pub trait BeaconNode: Send + Sync { pub trait BeaconNode: Send + Sync {
/// Get the shuffling for the given epoch and public key. /// Gets the duties for all validators.
/// ///
/// Returns Ok(None) if the public key is unknown, or the shuffling for that epoch is unknown. /// Returns a vector of EpochDuties for each validator public key. The entry will be None for
fn request_shuffling( /// validators that are not activated.
fn request_duties(
&self, &self,
epoch: Epoch, epoch: Epoch,
public_key: &PublicKey, signers: &[Keypair],
) -> Result<Option<EpochDuties>, BeaconNodeError>; ) -> Result<EpochDuties, BeaconNodeError>;
} }

View File

@ -19,6 +19,7 @@ use protos::services_grpc::{
use slog::{debug, error, info, warn}; use slog::{debug, error, info, warn};
use slot_clock::{SlotClock, SystemTimeSlotClock}; use slot_clock::{SlotClock, SystemTimeSlotClock};
use std::sync::Arc; use std::sync::Arc;
use std::sync::RwLock;
use std::time::{Duration, Instant, SystemTime}; use std::time::{Duration, Instant, SystemTime};
use tokio::prelude::*; use tokio::prelude::*;
use tokio::runtime::Builder; use tokio::runtime::Builder;
@ -40,12 +41,14 @@ pub struct Service {
chain_id: u16, chain_id: u16,
/// The fork state we processing on. /// The fork state we processing on.
fork: Fork, fork: Fork,
/// The slot clock keeping track of time. /// The slot clock for this service.
slot_clock: Arc<SystemTimeSlotClock>, slot_clock: SystemTimeSlotClock,
/// The current slot we are processing. /// The current slot we are processing.
current_slot: Slot, current_slot: Slot,
/// Duration until the next slot. This is used for initializing the tokio timer interval. /// Duration until the next slot. This is used for initializing the tokio timer interval.
duration_to_next_slot: Duration, duration_to_next_slot: Duration,
/// The number of slots per epoch to allow for converting slots to epochs.
slots_per_epoch: u64,
// GRPC Clients // GRPC Clients
/// The beacon block GRPC client. /// The beacon block GRPC client.
beacon_block_client: Arc<BeaconBlockServiceClient>, beacon_block_client: Arc<BeaconBlockServiceClient>,
@ -77,7 +80,7 @@ impl Service {
// retrieve node information // retrieve node information
let node_info = loop { let node_info = loop {
let info = match beacon_node_client.info(&Empty::new()) { match beacon_node_client.info(&Empty::new()) {
Err(e) => { Err(e) => {
warn!(log, "Could not connect to node. Error: {}", e); warn!(log, "Could not connect to node. Error: {}", e);
info!(log, "Retrying in 5 seconds..."); info!(log, "Retrying in 5 seconds...");
@ -118,13 +121,6 @@ impl Service {
epoch: Epoch::from(proto_fork.get_epoch()), epoch: Epoch::from(proto_fork.get_epoch()),
}; };
// build the validator slot clock
let slot_clock = {
let clock = SystemTimeSlotClock::new(genesis_time, config.spec.seconds_per_slot)
.expect("Unable to instantiate SystemTimeSlotClock.");
Arc::new(clock)
};
// initialize the RPC clients // initialize the RPC clients
// Beacon node gRPC beacon block endpoints. // Beacon node gRPC beacon block endpoints.
@ -145,6 +141,10 @@ impl Service {
Arc::new(AttestationServiceClient::new(ch)) Arc::new(AttestationServiceClient::new(ch))
}; };
// build the validator slot clock
let slot_clock = SystemTimeSlotClock::new(genesis_time, config.spec.seconds_per_slot)
.expect("Unable to instantiate SystemTimeSlotClock.");
let current_slot = slot_clock let current_slot = slot_clock
.present_slot() .present_slot()
.map_err(|e| ErrorKind::SlotClockError(e))? .map_err(|e| ErrorKind::SlotClockError(e))?
@ -182,6 +182,7 @@ impl Service {
slot_clock, slot_clock,
current_slot, current_slot,
duration_to_next_slot, duration_to_next_slot,
slots_per_epoch: config.spec.slots_per_epoch,
beacon_block_client, beacon_block_client,
validator_client, validator_client,
attester_client, attester_client,
@ -192,7 +193,7 @@ impl Service {
/// Initialise the service then run the core thread. /// Initialise the service then run the core thread.
pub fn start(config: ValidatorConfig, log: slog::Logger) -> error_chain::Result<()> { pub fn start(config: ValidatorConfig, log: slog::Logger) -> error_chain::Result<()> {
// connect to the node and retrieve its properties and initialize the gRPC clients // connect to the node and retrieve its properties and initialize the gRPC clients
let service = Service::initialize_service(&config, log)?; let service = Service::initialize_service(&config, log.clone())?;
// we have connected to a node and established its parameters. Spin up the core service // we have connected to a node and established its parameters. Spin up the core service
@ -214,77 +215,140 @@ impl Service {
) )
}; };
// kick off core service /* kick off core service */
// generate keypairs // generate keypairs
// TODO: keypairs are randomly generated; they should be loaded from a file or generated. // TODO: keypairs are randomly generated; they should be loaded from a file or generated.
// https://github.com/sigp/lighthouse/issues/160 // https://github.com/sigp/lighthouse/issues/160
let keypairs = match config.fetch_keys(&log) { let keypairs = match config.fetch_keys(&log.clone()) {
Some(kps) => kps, Some(kps) => kps,
None => panic!("No key pairs found, cannot start validator client without. Try running ./account_manager generate first.") None => panic!("No key pairs found, cannot start validator client without. Try running ./account_manager generate first.")
}; };
// build requisite objects to pass to core thread.
let duties_map = Arc::new(EpochDutiesMap::new(config.spec.slots_per_epoch)); /* build requisite objects to pass to core thread */
let epoch_map_for_attester = Arc::new(EpochMap::new(config.spec.slots_per_epoch));
let manager = DutiesManager { // Builds a mapping of Epoch -> Map(Keypair, EpochDuty)
// where EpochDuty contains slot numbers and attestation data that each validator needs to
// produce work on.
let duties_map = RwLock::new(EpochDutiesMap::new(config.spec.slots_per_epoch));
// builds a manager which maintains the list of current duties for all known validators
// and can check when a validator needs to perform a task.
let manager = Arc::new(DutiesManager {
duties_map, duties_map,
pubkeys: keypairs.iter().map(|keypair| keypair.pk.clone()).collect(), signers: keypairs,
spec: Arc::new(config.spec),
slot_clock: service.slot_clock.clone(),
beacon_node: service.validator_client.clone(), beacon_node: service.validator_client.clone(),
}; });
// run the core thread // run the core thread
runtime runtime
.block_on(interval.for_each(move |_| { .block_on(interval.for_each(move |_| {
// get the current slot let log = service.log.clone();
/* get the current slot and epoch */
let current_slot = match service.slot_clock.present_slot() { let current_slot = match service.slot_clock.present_slot() {
Err(e) => { Err(e) => {
error!(service.log, "SystemTimeError {:?}", e); error!(log, "SystemTimeError {:?}", e);
return Ok(()); return Ok(());
} }
Ok(slot) => slot.expect("Genesis is in the future"), Ok(slot) => slot.expect("Genesis is in the future"),
}; };
let current_epoch = current_slot.epoch(service.slots_per_epoch);
debug_assert!( debug_assert!(
current_slot > service.current_slot, current_slot > service.current_slot,
"The Timer should poll a new slot" "The Timer should poll a new slot"
); );
info!(service.log, "Processing slot: {}", current_slot.as_u64()); info!(log, "Processing slot: {}", current_slot.as_u64());
// check for new duties /* check for new duties */
// TODO: Convert to its own thread
match manager.update(current_slot) { let cloned_log = log.clone();
Err(error) => { let cloned_manager = manager.clone();
error!(service.log, "Epoch duties poll error"; "error" => format!("{:?}", error)) tokio::spawn(futures::future::poll_fn(move || {
cloned_manager.run_update(current_epoch.clone(), cloned_log.clone())
}));
/* execute any specified duties */
if let Some(work) = manager.get_current_work(current_slot) {
for (keypair, work_type) in work {
if work_type.produce_block {
// TODO: Produce a beacon block in a new thread
}
if work_type.attestation_duty.is_some() {
// available AttestationDuty info
let attestation_duty =
work_type.attestation_duty.expect("Cannot be None");
let attester_grpc_client =
Arc::new(
AttestationGrpcClient::new(
service.attester_client.clone()
)
);
let signer = Arc::new(AttesterLocalSigner::new(keypair.clone()));
let attester =
Attester::new(
attester_grpc_client,
signer);
let mut attester_service = AttesterService {
attester,
poll_interval_millis: POLL_INTERVAL_MILLIS,
log: log.clone(),
};
attester_service.run();
}
} }
Ok(UpdateOutcome::NoChange(epoch)) => { }
debug!(service.log, "No change in duties"; "epoch" => epoch)
}
Ok(UpdateOutcome::DutiesChanged(epoch, duties)) => {
info!(service.log, "Duties changed (potential re-org)"; "epoch" => epoch, "duties" => format!("{:?}", duties))
}
Ok(UpdateOutcome::NewDuties(epoch, duties)) => {
info!(service.log, "New duties obtained"; "epoch" => epoch, "duties" => format!("{:?}", duties))
}
Ok(UpdateOutcome::UnknownValidatorOrEpoch(epoch)) => {
error!(service.log, "Epoch or validator unknown"; "epoch" => epoch)
}
};
Ok(()) Ok(())
})) }))
.map_err(|e| format!("Service thread failed: {:?}", e))?; .map_err(|e| format!("Service thread failed: {:?}", e))?;
// completed a slot process
Ok(())
}
/*
for keypair in keypairs {
info!(self.log, "Starting validator services"; "validator" => keypair.pk.concatenated_hex_id());
// Spawn a new thread to maintain the validator's `EpochDuties`.
let duties_manager_thread = {
let spec = spec.clone();
let duties_map = duties_map.clone();
let slot_clock = self.slot_clock.clone();
let log = self.log.clone();
let beacon_node = self.validator_client.clone();
let pubkey = keypair.pk.clone();
thread::spawn(move || {
let manager = DutiesManager {
duties_map,
pubkey,
spec,
slot_clock,
beacon_node,
};
let mut duties_manager_service = DutiesManagerService {
manager,
poll_interval_millis,
log,
};
duties_manager_service.run();
})
};
let mut threads = vec![]; let mut threads = vec![];
for keypair in keypairs { for keypair in keypairs {
info!(log, "Starting validator services"; "validator" => keypair.pk.concatenated_hex_id()); info!(log, "Starting validator services"; "validator" => keypair.pk.concatenated_hex_id());
/*
// Spawn a new thread to maintain the validator's `EpochDuties`. // Spawn a new thread to maintain the validator's `EpochDuties`.
let duties_manager_thread = { let duties_manager_thread = {
let spec = spec.clone(); let spec = spec.clone();
@ -331,7 +395,6 @@ impl Service {
block_producer_service.run(); block_producer_service.run();
}) })
}; };
*/
// Spawn a new thread for attestation for the validator. // Spawn a new thread for attestation for the validator.
let attester_thread = { let attester_thread = {
@ -358,7 +421,6 @@ impl Service {
Ok(()) Ok(())
} }
/*
// Naively wait for all the threads to complete. // Naively wait for all the threads to complete.
for tuple in threads { for tuple in threads {
let (manager, producer, attester) = tuple; let (manager, producer, attester) = tuple;