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Merge remote-tracking branch 'origin/master' into v0.8.3

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This commit is contained in:
Michael Sproul 2019-09-05 12:27:58 +10:00
commit 24ebad9168
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69 changed files with 3927 additions and 2798 deletions
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2
beacon_node/Cargo.toml
View File

@ -11,7 +11,7 @@ store = { path = "./store" }
client = { path = "client" }
version = { path = "version" }
clap = "2.32.0"
slog = { version = "^2.2.3" , features = ["max_level_trace"] }
slog = { version = "^2.2.3" , features = ["max_level_trace", "release_max_level_trace"] }
slog-term = "^2.4.0"
slog-async = "^2.3.0"
ctrlc = { version = "3.1.1", features = ["termination"] }

1
beacon_node/beacon_chain/Cargo.toml
View File

@ -11,6 +11,7 @@ lazy_static = "1.3.0"
lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
log = "0.4"
operation_pool = { path = "../../eth2/operation_pool" }
rayon = "1.0"
serde = "1.0"
serde_derive = "1.0"
slog = { version = "^2.2.3" , features = ["max_level_trace"] }

21
beacon_node/beacon_chain/src/beacon_chain.rs
View File

@ -19,8 +19,7 @@ use state_processing::per_block_processing::{
verify_attestation_for_state, VerifySignatures,
};
use state_processing::{
per_block_processing, per_block_processing_without_verifying_block_signature,
per_slot_processing, BlockProcessingError,
per_block_processing, per_slot_processing, BlockProcessingError, BlockSignatureStrategy,
};
use std::sync::Arc;
use store::iter::{BlockRootsIterator, StateRootsIterator};
@ -726,7 +725,7 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
finalized: finalized_epoch,
})
} else if let Err(e) =
verify_attestation_for_state(state, &attestation, &self.spec, VerifySignatures::True)
verify_attestation_for_state(state, &attestation, VerifySignatures::True, &self.spec)
{
warn!(
self.log,
@ -896,7 +895,13 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
// Apply the received block to its parent state (which has been transitioned into this
// slot).
match per_block_processing(&mut state, &block, &self.spec) {
match per_block_processing(
&mut state,
&block,
Some(block_root),
BlockSignatureStrategy::VerifyIndividual,
&self.spec,
) {
Err(BlockProcessingError::BeaconStateError(e)) => {
return Err(Error::BeaconStateError(e))
}
@ -1060,7 +1065,13 @@ impl<T: BeaconChainTypes> BeaconChain<T> {
},
};
per_block_processing_without_verifying_block_signature(&mut state, &block, &self.spec)?;
per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::NoVerification,
&self.spec,
)?;
let state_root = state.canonical_root();

6
beacon_node/beacon_chain/src/errors.rs
View File

@ -1,7 +1,5 @@
use crate::fork_choice::Error as ForkChoiceError;
use state_processing::per_block_processing::errors::{
AttestationValidationError, IndexedAttestationValidationError,
};
use state_processing::per_block_processing::errors::AttestationValidationError;
use state_processing::BlockProcessingError;
use state_processing::SlotProcessingError;
use types::*;
@ -37,7 +35,6 @@ pub enum BeaconChainError {
beacon_block_root: Hash256,
},
AttestationValidationError(AttestationValidationError),
IndexedAttestationValidationError(IndexedAttestationValidationError),
}
easy_from_to!(SlotProcessingError, BeaconChainError);
@ -55,4 +52,3 @@ easy_from_to!(BlockProcessingError, BlockProductionError);
easy_from_to!(BeaconStateError, BlockProductionError);
easy_from_to!(SlotProcessingError, BlockProductionError);
easy_from_to!(AttestationValidationError, BeaconChainError);
easy_from_to!(IndexedAttestationValidationError, BeaconChainError);

112
beacon_node/beacon_chain/src/test_utils.rs
View File

@ -1,5 +1,6 @@
use crate::{BeaconChain, BeaconChainTypes, BlockProcessingOutcome};
use lmd_ghost::LmdGhost;
use rayon::prelude::*;
use sloggers::{null::NullLoggerBuilder, Build};
use slot_clock::SlotClock;
use slot_clock::TestingSlotClock;
@ -164,7 +165,9 @@ where
let mut state = {
// Determine the slot for the first block (or skipped block).
let state_slot = match block_strategy {
BlockStrategy::OnCanonicalHead => self.chain.read_slot_clock().unwrap() - 1,
BlockStrategy::OnCanonicalHead => {
self.chain.read_slot_clock().expect("should know slot") - 1
}
BlockStrategy::ForkCanonicalChainAt { previous_slot, .. } => previous_slot,
};
@ -173,7 +176,9 @@ where
// Determine the first slot where a block should be built.
let mut slot = match block_strategy {
BlockStrategy::OnCanonicalHead => self.chain.read_slot_clock().unwrap(),
BlockStrategy::OnCanonicalHead => {
self.chain.read_slot_clock().expect("should know slot")
}
BlockStrategy::ForkCanonicalChainAt { first_slot, .. } => first_slot,
};
@ -237,7 +242,9 @@ where
.expect("should be able to advance state to slot");
}
state.build_all_caches(&self.spec).unwrap();
state
.build_all_caches(&self.spec)
.expect("should build caches");
let proposer_index = match block_strategy {
BlockStrategy::OnCanonicalHead => self
@ -314,7 +321,7 @@ where
AttestationStrategy::SomeValidators(vec) => vec.clone(),
};
let mut vec = vec![];
let mut attestations = vec![];
state
.get_crosslink_committees_at_slot(state.slot)
@ -323,55 +330,70 @@ where
.for_each(|cc| {
let committee_size = cc.committee.len();
for (i, validator_index) in cc.committee.iter().enumerate() {
// Note: searching this array is worst-case `O(n)`. A hashset could be a better
// alternative.
if attesting_validators.contains(validator_index) {
let data = self
.chain
.produce_attestation_data_for_block(
cc.shard,
head_block_root,
head_block_slot,
state,
)
.expect("should produce attestation data");
let mut local_attestations: Vec<Attestation<E>> = cc
.committee
.par_iter()
.enumerate()
.filter_map(|(i, validator_index)| {
// Note: searching this array is worst-case `O(n)`. A hashset could be a better
// alternative.
if attesting_validators.contains(validator_index) {
let data = self
.chain
.produce_attestation_data_for_block(
cc.shard,
head_block_root,
head_block_slot,
state,
)
.expect("should produce attestation data");
let mut aggregation_bits = BitList::with_capacity(committee_size).unwrap();
aggregation_bits.set(i, true).unwrap();
let custody_bits = BitList::with_capacity(committee_size).unwrap();
let mut aggregation_bits = BitList::with_capacity(committee_size)
.expect("should make aggregation bits");
aggregation_bits
.set(i, true)
.expect("should be able to set aggregation bits");
let custody_bits = BitList::with_capacity(committee_size)
.expect("should make custody bits");
let signature = {
let message = AttestationDataAndCustodyBit {
data: data.clone(),
custody_bit: false,
}
.tree_hash_root();
let signature = {
let message = AttestationDataAndCustodyBit {
data: data.clone(),
custody_bit: false,
}
.tree_hash_root();
let domain =
spec.get_domain(data.target.epoch, Domain::Attestation, fork);
let domain =
spec.get_domain(data.target.epoch, Domain::Attestation, fork);
let mut agg_sig = AggregateSignature::new();
agg_sig.add(&Signature::new(
&message,
domain,
self.get_sk(*validator_index),
));
let mut agg_sig = AggregateSignature::new();
agg_sig.add(&Signature::new(
&message,
domain,
self.get_sk(*validator_index),
));
agg_sig
};
agg_sig
};
vec.push(Attestation {
aggregation_bits,
data,
custody_bits,
signature,
})
}
}
let attestation = Attestation {
aggregation_bits,
data,
custody_bits,
signature,
};
Some(attestation)
} else {
None
}
})
.collect();
attestations.append(&mut local_attestations);
});
vec
attestations
}
/// Creates two forks:

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

@ -93,16 +93,9 @@ where
}
do_state_catchup(&beacon_chain, &log);
// Start the network service, libp2p and syncing threads
// TODO: Add beacon_chain reference to network parameters
let network_config = &client_config.network;
let network_logger = log.new(o!("Service" => "Network"));
let (network, network_send) = NetworkService::new(
beacon_chain.clone(),
network_config,
executor,
network_logger,
)?;
let (network, network_send) =
NetworkService::new(beacon_chain.clone(), network_config, executor, log.clone())?;
// spawn the RPC server
let rpc_exit_signal = if client_config.rpc.enabled {

2
beacon_node/client/src/notifier.rs
View File

@ -34,7 +34,7 @@ pub fn run<T: BeaconChainTypes>(client: &Client<T>, executor: TaskExecutor, exit
// Panics if libp2p is poisoned.
let connected_peer_count = libp2p.lock().swarm.connected_peers();
debug!(log, "libp2p"; "peer_count" => connected_peer_count);
debug!(log, "Libp2p connected peer status"; "peer_count" => connected_peer_count);
if connected_peer_count <= WARN_PEER_COUNT {
warn!(log, "Low libp2p peer count"; "peer_count" => connected_peer_count);

5
beacon_node/eth2-libp2p/Cargo.toml
View File

@ -7,8 +7,8 @@ edition = "2018"
[dependencies]
clap = "2.32.0"
#SigP repository
libp2p = { git = "https://github.com/SigP/rust-libp2p", rev = "b0d3cf7b4b0fa6c555b64dbdd110673a05457abd" }
enr = { git = "https://github.com/SigP/rust-libp2p/", rev = "b0d3cf7b4b0fa6c555b64dbdd110673a05457abd", features = ["serde"] }
libp2p = { git = "https://github.com/SigP/rust-libp2p", rev = "61036890d574f5b46573952b20def2baafd6a6e9" }
enr = { git = "https://github.com/SigP/rust-libp2p/", rev = "61036890d574f5b46573952b20def2baafd6a6e9", features = ["serde"] }
types = { path = "../../eth2/types" }
serde = "1.0"
serde_derive = "1.0"
@ -26,5 +26,6 @@ smallvec = "0.6.10"
fnv = "1.0.6"
unsigned-varint = "0.2.2"
bytes = "0.4.12"
tokio-io-timeout = "0.3.1"
lazy_static = "1.3.0"
lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }

57
beacon_node/eth2-libp2p/src/behaviour.rs
View File

@ -1,3 +1,4 @@
use crate::config::*;
use crate::discovery::Discovery;
use crate::rpc::{RPCEvent, RPCMessage, RPC};
use crate::{error, NetworkConfig};
@ -15,7 +16,6 @@ use libp2p::{
NetworkBehaviour, PeerId,
};
use slog::{debug, o, trace};
use ssz::{ssz_encode, Encode};
use std::num::NonZeroU32;
use std::time::Duration;
@ -91,7 +91,7 @@ impl<TSubstream: AsyncRead + AsyncWrite> NetworkBehaviourEventProcess<GossipsubE
fn inject_event(&mut self, event: GossipsubEvent) {
match event {
GossipsubEvent::Message(gs_msg) => {
trace!(self.log, "Received GossipEvent"; "msg" => format!("{:?}", gs_msg));
trace!(self.log, "Received GossipEvent");
let msg = PubsubMessage::from_topics(&gs_msg.topics, gs_msg.data);
@ -192,10 +192,10 @@ impl<TSubstream: AsyncRead + AsyncWrite> Behaviour<TSubstream> {
}
/// Publishes a message on the pubsub (gossipsub) behaviour.
pub fn publish(&mut self, topics: Vec<Topic>, message: PubsubMessage) {
let message_bytes = ssz_encode(&message);
pub fn publish(&mut self, topics: &[Topic], message: PubsubMessage) {
let message_data = message.to_data();
for topic in topics {
self.gossipsub.publish(topic, message_bytes.clone());
self.gossipsub.publish(topic, message_data.clone());
}
}
@ -224,13 +224,20 @@ pub enum BehaviourEvent {
},
}
/// Messages that are passed to and from the pubsub (Gossipsub) behaviour.
/// Messages that are passed to and from the pubsub (Gossipsub) behaviour. These are encoded and
/// decoded upstream.
#[derive(Debug, Clone, PartialEq)]
pub enum PubsubMessage {
/// Gossipsub message providing notification of a new block.
Block(Vec<u8>),
/// Gossipsub message providing notification of a new attestation.
Attestation(Vec<u8>),
/// Gossipsub message providing notification of a voluntary exit.
VoluntaryExit(Vec<u8>),
/// Gossipsub message providing notification of a new proposer slashing.
ProposerSlashing(Vec<u8>),
/// Gossipsub message providing notification of a new attester slashing.
AttesterSlashing(Vec<u8>),
/// Gossipsub message from an unknown topic.
Unknown(Vec<u8>),
}
@ -244,29 +251,33 @@ impl PubsubMessage {
*/
fn from_topics(topics: &Vec<TopicHash>, data: Vec<u8>) -> Self {
for topic in topics {
match topic.as_str() {
BEACON_BLOCK_TOPIC => return PubsubMessage::Block(data),
BEACON_ATTESTATION_TOPIC => return PubsubMessage::Attestation(data),
_ => {}
// compare the prefix and postfix, then match on the topic
let topic_parts: Vec<&str> = topic.as_str().split('/').collect();
if topic_parts.len() == 4
&& topic_parts[1] == TOPIC_PREFIX
&& topic_parts[3] == TOPIC_ENCODING_POSTFIX
{
match topic_parts[2] {
BEACON_BLOCK_TOPIC => return PubsubMessage::Block(data),
BEACON_ATTESTATION_TOPIC => return PubsubMessage::Attestation(data),
VOLUNTARY_EXIT_TOPIC => return PubsubMessage::VoluntaryExit(data),
PROPOSER_SLASHING_TOPIC => return PubsubMessage::ProposerSlashing(data),
ATTESTER_SLASHING_TOPIC => return PubsubMessage::AttesterSlashing(data),
_ => {}
}
}
}
PubsubMessage::Unknown(data)
}
}
impl Encode for PubsubMessage {
fn is_ssz_fixed_len() -> bool {
false
}
fn ssz_append(&self, buf: &mut Vec<u8>) {
fn to_data(self) -> Vec<u8> {
match self {
PubsubMessage::Block(inner)
| PubsubMessage::Attestation(inner)
| PubsubMessage::Unknown(inner) => {
// Encode the gossip as a Vec<u8>;
buf.append(&mut inner.as_ssz_bytes());
}
PubsubMessage::Block(data)
| PubsubMessage::Attestation(data)
| PubsubMessage::VoluntaryExit(data)
| PubsubMessage::ProposerSlashing(data)
| PubsubMessage::AttesterSlashing(data)
| PubsubMessage::Unknown(data) => data,
}
}
}

15
beacon_node/eth2-libp2p/src/config.rs
View File

@ -6,9 +6,16 @@ use serde_derive::{Deserialize, Serialize};
use std::path::PathBuf;
use std::time::Duration;
/// The beacon node topic string to subscribe to.
/// The gossipsub topic names.
// These constants form a topic name of the form /TOPIC_PREFIX/TOPIC/ENCODING_POSTFIX
// For example /eth2/beacon_block/ssz
pub const TOPIC_PREFIX: &str = "eth2";
pub const TOPIC_ENCODING_POSTFIX: &str = "ssz";
pub const BEACON_BLOCK_TOPIC: &str = "beacon_block";
pub const BEACON_ATTESTATION_TOPIC: &str = "beacon_attestation";
pub const VOLUNTARY_EXIT_TOPIC: &str = "voluntary_exit";
pub const PROPOSER_SLASHING_TOPIC: &str = "proposer_slashing";
pub const ATTESTER_SLASHING_TOPIC: &str = "attester_slashing";
pub const SHARD_TOPIC_PREFIX: &str = "shard";
#[derive(Clone, Debug, Serialize, Deserialize)]
@ -63,10 +70,10 @@ impl Default for Config {
discovery_address: "127.0.0.1".parse().expect("valid ip address"),
discovery_port: 9000,
max_peers: 10,
//TODO: Set realistic values for production
// Note: This defaults topics to plain strings. Not hashes
// Note: The topics by default are sent as plain strings. Hashes are an optional
// parameter.
gs_config: GossipsubConfigBuilder::new()
.max_transmit_size(1_000_000)
.max_transmit_size(1_048_576)
.heartbeat_interval(Duration::from_secs(20))
.build(),
boot_nodes: vec![],

36
beacon_node/eth2-libp2p/src/discovery.rs
View File

@ -10,7 +10,7 @@ use libp2p::discv5::{Discv5, Discv5Event};
use libp2p::enr::{Enr, EnrBuilder, NodeId};
use libp2p::multiaddr::Protocol;
use libp2p::swarm::{NetworkBehaviour, NetworkBehaviourAction, PollParameters, ProtocolsHandler};
use slog::{debug, info, o, warn};
use slog::{debug, info, warn};
use std::collections::HashSet;
use std::fs::File;
use std::io::prelude::*;
@ -64,7 +64,7 @@ impl<TSubstream> Discovery<TSubstream> {
config: &NetworkConfig,
log: &slog::Logger,
) -> error::Result<Self> {
let log = log.new(o!("Service" => "Libp2p-Discovery"));
let log = log.clone();
// checks if current ENR matches that found on disk
let local_enr = load_enr(local_key, config, &log)?;
@ -74,19 +74,19 @@ impl<TSubstream> Discovery<TSubstream> {
None => String::from(""),
};
info!(log, "Local ENR: {}", local_enr.to_base64());
debug!(log, "Local Node Id: {}", local_enr.node_id());
debug!(log, "Local ENR seq: {}", local_enr.seq());
info!(log, "ENR Initialised"; "ENR" => local_enr.to_base64(), "Seq" => local_enr.seq());
debug!(log, "Discv5 Node ID Initialised"; "node_id" => format!("{}",local_enr.node_id()));
let mut discovery = Discv5::new(local_enr, local_key.clone(), config.listen_address)
.map_err(|e| format!("Discv5 service failed: {:?}", e))?;
.map_err(|e| format!("Discv5 service failed. Error: {:?}", e))?;
// Add bootnodes to routing table
for bootnode_enr in config.boot_nodes.clone() {
debug!(
log,
"Adding node to routing table: {}",
bootnode_enr.node_id()
"Adding node to routing table";
"Node ID" => format!("{}",
bootnode_enr.node_id())
);
discovery.add_enr(bootnode_enr);
}
@ -133,7 +133,7 @@ impl<TSubstream> Discovery<TSubstream> {
fn find_peers(&mut self) {
// pick a random NodeId
let random_node = NodeId::random();
debug!(self.log, "Searching for peers...");
debug!(self.log, "Searching for peers");
self.discovery.find_node(random_node);
// update the time until next discovery
@ -217,7 +217,7 @@ where
}
Ok(Async::NotReady) => break,
Err(e) => {
warn!(self.log, "Discovery peer search failed: {:?}", e);
warn!(self.log, "Discovery peer search failed"; "Error" => format!("{:?}", e));
}
}
}
@ -244,16 +244,16 @@ where
});
}
Discv5Event::FindNodeResult { closer_peers, .. } => {
debug!(self.log, "Discv5 query found {} peers", closer_peers.len());
debug!(self.log, "Discovery query completed"; "peers_found" => closer_peers.len());
if closer_peers.is_empty() {
debug!(self.log, "Discv5 random query yielded empty results");
debug!(self.log, "Discovery random query found no peers");
}
for peer_id in closer_peers {
// if we need more peers, attempt a connection
if self.connected_peers.len() < self.max_peers
&& self.connected_peers.get(&peer_id).is_none()
{
debug!(self.log, "Discv5: Peer discovered"; "Peer"=> format!("{:?}", peer_id));
debug!(self.log, "Peer discovered"; "peer_id"=> format!("{:?}", peer_id));
return Async::Ready(NetworkBehaviourAction::DialPeer {
peer_id,
});
@ -300,14 +300,12 @@ fn load_enr(
Ok(_) => {
match Enr::from_str(&enr_string) {
Ok(enr) => {
debug!(log, "ENR found in file: {:?}", enr_f);
if enr.node_id() == local_enr.node_id() {
if enr.ip() == config.discovery_address.into()
&& enr.tcp() == Some(config.libp2p_port)
&& enr.udp() == Some(config.discovery_port)
{
debug!(log, "ENR loaded from file");
debug!(log, "ENR loaded from file"; "file" => format!("{:?}", enr_f));
// the stored ENR has the same configuration, use it
return Ok(enr);
}
@ -317,11 +315,11 @@ fn load_enr(
local_enr.set_seq(new_seq_no, local_key).map_err(|e| {
format!("Could not update ENR sequence number: {:?}", e)
})?;
debug!(log, "ENR sequence number increased to: {}", new_seq_no);
debug!(log, "ENR sequence number increased"; "seq" => new_seq_no);
}
}
Err(e) => {
warn!(log, "ENR from file could not be decoded: {:?}", e);
warn!(log, "ENR from file could not be decoded"; "error" => format!("{:?}", e));
}
}
}
@ -344,7 +342,7 @@ fn save_enr_to_disc(dir: &Path, enr: &Enr, log: &slog::Logger) {
Err(e) => {
warn!(
log,
"Could not write ENR to file: {:?}{:?}. Error: {}", dir, ENR_FILENAME, e
"Could not write ENR to file"; "file" => format!("{:?}{:?}",dir, ENR_FILENAME), "error" => format!("{}", e)
);
}
}

1
beacon_node/eth2-libp2p/src/lib.rs
View File

@ -16,6 +16,7 @@ mod service;
pub use behaviour::PubsubMessage;
pub use config::{
Config as NetworkConfig, BEACON_ATTESTATION_TOPIC, BEACON_BLOCK_TOPIC, SHARD_TOPIC_PREFIX,
TOPIC_ENCODING_POSTFIX, TOPIC_PREFIX,
};
pub use libp2p::enr::Enr;
pub use libp2p::gossipsub::{Topic, TopicHash};

134
beacon_node/eth2-libp2p/src/rpc/codec/ssz.rs
View File

@ -41,10 +41,8 @@ impl Encoder for SSZInboundCodec {
RPCErrorResponse::Success(resp) => {
match resp {
RPCResponse::Hello(res) => res.as_ssz_bytes(),
RPCResponse::BeaconBlockRoots(res) => res.as_ssz_bytes(),
RPCResponse::BeaconBlockHeaders(res) => res.headers, // already raw bytes
RPCResponse::BeaconBlockBodies(res) => res.block_bodies, // already raw bytes
RPCResponse::BeaconChainState(res) => res.as_ssz_bytes(),
RPCResponse::BeaconBlocks(res) => res, // already raw bytes
RPCResponse::RecentBeaconBlocks(res) => res, // already raw bytes
}
}
RPCErrorResponse::InvalidRequest(err) => err.as_ssz_bytes(),
@ -72,52 +70,30 @@ impl Decoder for SSZInboundCodec {
match self.inner.decode(src).map_err(RPCError::from) {
Ok(Some(packet)) => match self.protocol.message_name.as_str() {
"hello" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::Hello(HelloMessage::from_ssz_bytes(
"1" => Ok(Some(RPCRequest::Hello(HelloMessage::from_ssz_bytes(
&packet,
)?))),
_ => Err(RPCError::InvalidProtocol("Unknown HELLO version")),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"goodbye" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::Goodbye(GoodbyeReason::from_ssz_bytes(
"1" => Ok(Some(RPCRequest::Goodbye(GoodbyeReason::from_ssz_bytes(
&packet,
)?))),
_ => Err(RPCError::InvalidProtocol(
"Unknown GOODBYE version.as_str()",
)),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"beacon_block_roots" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::BeaconBlockRoots(
BeaconBlockRootsRequest::from_ssz_bytes(&packet)?,
"beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCRequest::BeaconBlocks(
BeaconBlocksRequest::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_ROOTS version.",
)),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"beacon_block_headers" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::BeaconBlockHeaders(
BeaconBlockHeadersRequest::from_ssz_bytes(&packet)?,
"recent_beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCRequest::RecentBeaconBlocks(
RecentBeaconBlocksRequest::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_HEADERS version.",
)),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"beacon_block_bodies" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::BeaconBlockBodies(
BeaconBlockBodiesRequest::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_BODIES version.",
)),
},
"beacon_chain_state" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCRequest::BeaconChainState(
BeaconChainStateRequest::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_CHAIN_STATE version.",
)),
},
_ => Err(RPCError::InvalidProtocol("Unknown message name.")),
_ => unreachable!("Cannot negotiate an unknown protocol"),
},
Ok(None) => Ok(None),
Err(e) => Err(e),
@ -156,10 +132,8 @@ impl Encoder for SSZOutboundCodec {
let bytes = match item {
RPCRequest::Hello(req) => req.as_ssz_bytes(),
RPCRequest::Goodbye(req) => req.as_ssz_bytes(),
RPCRequest::BeaconBlockRoots(req) => req.as_ssz_bytes(),
RPCRequest::BeaconBlockHeaders(req) => req.as_ssz_bytes(),
RPCRequest::BeaconBlockBodies(req) => req.as_ssz_bytes(),
RPCRequest::BeaconChainState(req) => req.as_ssz_bytes(),
RPCRequest::BeaconBlocks(req) => req.as_ssz_bytes(),
RPCRequest::RecentBeaconBlocks(req) => req.as_ssz_bytes(),
};
// length-prefix
self.inner
@ -168,7 +142,11 @@ impl Encoder for SSZOutboundCodec {
}
}
// Decoder for outbound
// Decoder for outbound streams
//
// The majority of the decoding has now been pushed upstream due to the changing specification.
// We prefer to decode blocks and attestations with extra knowledge about the chain to perform
// faster verification checks before decoding entire blocks/attestations.
impl Decoder for SSZOutboundCodec {
type Item = RPCResponse;
type Error = RPCError;
@ -177,53 +155,41 @@ impl Decoder for SSZOutboundCodec {
match self.inner.decode(src).map_err(RPCError::from) {
Ok(Some(packet)) => match self.protocol.message_name.as_str() {
"hello" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCResponse::Hello(HelloMessage::from_ssz_bytes(
"1" => Ok(Some(RPCResponse::Hello(HelloMessage::from_ssz_bytes(
&packet,
)?))),
_ => Err(RPCError::InvalidProtocol("Unknown HELLO version.")),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"goodbye" => Err(RPCError::InvalidProtocol("GOODBYE doesn't have a response")),
"beacon_block_roots" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCResponse::BeaconBlockRoots(
BeaconBlockRootsResponse::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_ROOTS version.",
)),
"beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCResponse::BeaconBlocks(packet.to_vec()))),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"beacon_block_headers" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCResponse::BeaconBlockHeaders(
BeaconBlockHeadersResponse {
headers: packet.to_vec(),
},
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_HEADERS version.",
)),
"recent_beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCResponse::RecentBeaconBlocks(packet.to_vec()))),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"beacon_block_bodies" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCResponse::BeaconBlockBodies(
BeaconBlockBodiesResponse {
block_bodies: packet.to_vec(),
// this gets filled in the protocol handler
block_roots: None,
},
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_BLOCK_BODIES version.",
)),
},
"beacon_chain_state" => match self.protocol.version.as_str() {
"1.0.0" => Ok(Some(RPCResponse::BeaconChainState(
BeaconChainStateResponse::from_ssz_bytes(&packet)?,
))),
_ => Err(RPCError::InvalidProtocol(
"Unknown BEACON_CHAIN_STATE version.",
)),
},
_ => Err(RPCError::InvalidProtocol("Unknown method")),
_ => unreachable!("Cannot negotiate an unknown protocol"),
},
Ok(None) => Ok(None),
Ok(None) => {
// the object sent could be a empty. We return the empty object if this is the case
match self.protocol.message_name.as_str() {
"hello" => match self.protocol.version.as_str() {
"1" => Ok(None), // cannot have an empty HELLO message. The stream has terminated unexpectedly
_ => unreachable!("Cannot negotiate an unknown version"),
},
"goodbye" => Err(RPCError::InvalidProtocol("GOODBYE doesn't have a response")),
"beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCResponse::BeaconBlocks(Vec::new()))),
_ => unreachable!("Cannot negotiate an unknown version"),
},
"recent_beacon_blocks" => match self.protocol.version.as_str() {
"1" => Ok(Some(RPCResponse::RecentBeaconBlocks(Vec::new()))),
_ => unreachable!("Cannot negotiate an unknown version"),
},
_ => unreachable!("Cannot negotiate an unknown protocol"),
}
}
Err(e) => Err(e),
}
}

40
beacon_node/eth2-libp2p/src/rpc/handler.rs
View File

@ -1,4 +1,4 @@
use super::methods::{RPCErrorResponse, RPCResponse, RequestId};
use super::methods::RequestId;
use super::protocol::{RPCError, RPCProtocol, RPCRequest};
use super::RPCEvent;
use crate::rpc::protocol::{InboundFramed, OutboundFramed};
@ -13,8 +13,8 @@ use smallvec::SmallVec;
use std::time::{Duration, Instant};
use tokio_io::{AsyncRead, AsyncWrite};
/// The time (in seconds) before a substream that is awaiting a response times out.
pub const RESPONSE_TIMEOUT: u64 = 9;
/// The time (in seconds) before a substream that is awaiting a response from the user times out.
pub const RESPONSE_TIMEOUT: u64 = 10;
/// Implementation of `ProtocolsHandler` for the RPC protocol.
pub struct RPCHandler<TSubstream>
@ -314,14 +314,14 @@ where
Ok(Async::Ready(response)) => {
if let Some(response) = response {
return Ok(Async::Ready(ProtocolsHandlerEvent::Custom(
build_response(rpc_event, response),
RPCEvent::Response(rpc_event.id(), response),
)));
} else {
// stream closed early
// stream closed early or nothing was sent
return Ok(Async::Ready(ProtocolsHandlerEvent::Custom(
RPCEvent::Error(
rpc_event.id(),
RPCError::Custom("Stream Closed Early".into()),
RPCError::Custom("Stream closed early. Empty response".into()),
),
)));
}
@ -365,31 +365,3 @@ where
Ok(Async::NotReady)
}
}
/// Given a response back from a peer and the request that sent it, construct a response to send
/// back to the user. This allows for some data manipulation of responses given requests.
fn build_response(rpc_event: RPCEvent, rpc_response: RPCErrorResponse) -> RPCEvent {
let id = rpc_event.id();
// handle the types of responses
match rpc_response {
RPCErrorResponse::Success(response) => {
match response {
// if the response is block roots, tag on the extra request data
RPCResponse::BeaconBlockBodies(mut resp) => {
if let RPCEvent::Request(_id, RPCRequest::BeaconBlockBodies(bodies_req)) =
rpc_event
{
resp.block_roots = Some(bodies_req.block_roots);
}
RPCEvent::Response(
id,
RPCErrorResponse::Success(RPCResponse::BeaconBlockBodies(resp)),
)
}
_ => RPCEvent::Response(id, RPCErrorResponse::Success(response)),
}
}
_ => RPCEvent::Response(id, rpc_response),
}
}

150
beacon_node/eth2-libp2p/src/rpc/methods.rs
View File

@ -2,7 +2,7 @@
use ssz::{impl_decode_via_from, impl_encode_via_from};
use ssz_derive::{Decode, Encode};
use types::{BeaconBlockBody, Epoch, EthSpec, Hash256, Slot};
use types::{Epoch, Hash256, Slot};
/* Request/Response data structures for RPC methods */
@ -13,23 +13,20 @@ pub type RequestId = usize;
/// The HELLO request/response handshake message.
#[derive(Encode, Decode, Clone, Debug)]
pub struct HelloMessage {
/// The network ID of the peer.
pub network_id: u8,
/// The fork version of the chain we are broadcasting.
pub fork_version: [u8; 4],
/// The chain id for the HELLO request.
pub chain_id: u64,
/// Latest finalized root.
pub finalized_root: Hash256,
/// The peers last finalized root.
pub latest_finalized_root: Hash256,
/// Latest finalized epoch.
pub finalized_epoch: Epoch,
/// The peers last finalized epoch.
pub latest_finalized_epoch: Epoch,
/// The latest block root.
pub head_root: Hash256,
/// The peers last block root.
pub best_root: Hash256,
/// The peers last slot.
pub best_slot: Slot,
/// The slot associated with the latest block root.
pub head_slot: Slot,
}
/// The reason given for a `Goodbye` message.
@ -74,108 +71,31 @@ impl_decode_via_from!(GoodbyeReason, u64);
/// Request a number of beacon block roots from a peer.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockRootsRequest {
/// The starting slot of the requested blocks.
pub start_slot: Slot,
pub struct BeaconBlocksRequest {
/// The hash tree root of a block on the requested chain.
pub head_block_root: Hash256,
/// The starting slot to request blocks.
pub start_slot: u64,
/// The number of blocks from the start slot.
pub count: u64, // this must be less than 32768. //TODO: Enforce this in the lower layers
}
pub count: u64,
/// Response containing a number of beacon block roots from a peer.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockRootsResponse {
/// List of requested blocks and associated slots.
pub roots: Vec<BlockRootSlot>,
}
/// Contains a block root and associated slot.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BlockRootSlot {
/// The block root.
pub block_root: Hash256,
/// The block slot.
pub slot: Slot,
}
/// The response of a beacon block roots request.
impl BeaconBlockRootsResponse {
/// Returns `true` if each `self.roots.slot[i]` is higher than the preceding `i`.
pub fn slots_are_ascending(&self) -> bool {
for window in self.roots.windows(2) {
if window[0].slot >= window[1].slot {
return false;
}
}
true
}
}
/// Request a number of beacon block headers from a peer.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockHeadersRequest {
/// The starting header hash of the requested headers.
pub start_root: Hash256,
/// The starting slot of the requested headers.
pub start_slot: Slot,
/// The maximum number of headers than can be returned.
pub max_headers: u64,
/// The maximum number of slots to skip between blocks.
pub skip_slots: u64,
}
/// Response containing requested block headers.
#[derive(Clone, Debug, PartialEq)]
pub struct BeaconBlockHeadersResponse {
/// The list of ssz-encoded requested beacon block headers.
pub headers: Vec<u8>,
/// The step increment to receive blocks.
///
/// A value of 1 returns every block.
/// A value of 2 returns every second block.
/// A value of 3 returns every third block and so on.
pub step: u64,
}
/// Request a number of beacon block bodies from a peer.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconBlockBodiesRequest {
pub struct RecentBeaconBlocksRequest {
/// The list of beacon block bodies being requested.
pub block_roots: Vec<Hash256>,
}
/// Response containing the list of requested beacon block bodies.
#[derive(Clone, Debug, PartialEq)]
pub struct BeaconBlockBodiesResponse {
/// The list of hashes that were sent in the request and match these roots response. None when
/// sending outbound.
pub block_roots: Option<Vec<Hash256>>,
/// The list of ssz-encoded beacon block bodies being requested.
pub block_bodies: Vec<u8>,
}
/// The decoded version of `BeaconBlockBodiesResponse` which is expected in `SimpleSync`.
pub struct DecodedBeaconBlockBodiesResponse<E: EthSpec> {
/// The list of hashes sent in the request to get this response.
pub block_roots: Vec<Hash256>,
/// The valid decoded block bodies.
pub block_bodies: Vec<BeaconBlockBody<E>>,
}
/// Request values for tree hashes which yield a blocks `state_root`.
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconChainStateRequest {
/// The tree hashes that a value is requested for.
pub hashes: Vec<Hash256>,
}
/// Request values for tree hashes which yield a blocks `state_root`.
// Note: TBD
#[derive(Encode, Decode, Clone, Debug, PartialEq)]
pub struct BeaconChainStateResponse {
/// The values corresponding the to the requested tree hashes.
pub values: bool, //TBD - stubbed with encodable bool
}
/* RPC Handling and Grouping */
// Collection of enums and structs used by the Codecs to encode/decode RPC messages
@ -183,14 +103,10 @@ pub struct BeaconChainStateResponse {
pub enum RPCResponse {
/// A HELLO message.
Hello(HelloMessage),
/// A response to a get BEACON_BLOCK_ROOTS request.
BeaconBlockRoots(BeaconBlockRootsResponse),
/// A response to a get BEACON_BLOCK_HEADERS request.
BeaconBlockHeaders(BeaconBlockHeadersResponse),
/// A response to a get BEACON_BLOCK_BODIES request.
BeaconBlockBodies(BeaconBlockBodiesResponse),
/// A response to a get BEACON_CHAIN_STATE request.
BeaconChainState(BeaconChainStateResponse),
/// A response to a get BEACON_BLOCKS request.
BeaconBlocks(Vec<u8>),
/// A response to a get RECENT_BEACON_BLOCKS request.
RecentBeaconBlocks(Vec<u8>),
}
#[derive(Debug)]
@ -206,8 +122,8 @@ impl RPCErrorResponse {
pub fn as_u8(&self) -> u8 {
match self {
RPCErrorResponse::Success(_) => 0,
RPCErrorResponse::InvalidRequest(_) => 2,
RPCErrorResponse::ServerError(_) => 3,
RPCErrorResponse::InvalidRequest(_) => 1,
RPCErrorResponse::ServerError(_) => 2,
RPCErrorResponse::Unknown(_) => 255,
}
}
@ -223,8 +139,8 @@ impl RPCErrorResponse {
/// Builds an RPCErrorResponse from a response code and an ErrorMessage
pub fn from_error(response_code: u8, err: ErrorMessage) -> Self {
match response_code {
2 => RPCErrorResponse::InvalidRequest(err),
3 => RPCErrorResponse::ServerError(err),
1 => RPCErrorResponse::InvalidRequest(err),
2 => RPCErrorResponse::ServerError(err),
_ => RPCErrorResponse::Unknown(err),
}
}

55
beacon_node/eth2-libp2p/src/rpc/protocol.rs
View File

@ -16,13 +16,17 @@ use tokio::io::{AsyncRead, AsyncWrite};
use tokio::prelude::*;
use tokio::timer::timeout;
use tokio::util::FutureExt;
use tokio_io_timeout::TimeoutStream;
/// The maximum bytes that can be sent across the RPC.
const MAX_RPC_SIZE: usize = 4_194_304; // 4M
/// The protocol prefix the RPC protocol id.
const PROTOCOL_PREFIX: &str = "/eth2/beacon_node/rpc";
/// The number of seconds to wait for a request once a protocol has been established before the stream is terminated.
const REQUEST_TIMEOUT: u64 = 3;
const PROTOCOL_PREFIX: &str = "/eth2/beacon_chain/req";
/// Time allowed for the first byte of a request to arrive before we time out (Time To First Byte).
const TTFB_TIMEOUT: u64 = 5;
/// The number of seconds to wait for the first bytes of a request once a protocol has been
/// established before the stream is terminated.
const REQUEST_TIMEOUT: u64 = 15;
#[derive(Debug, Clone)]
pub struct RPCProtocol;
@ -33,11 +37,10 @@ impl UpgradeInfo for RPCProtocol {
fn protocol_info(&self) -> Self::InfoIter {
vec![
ProtocolId::new("hello", "1.0.0", "ssz"),
ProtocolId::new("goodbye", "1.0.0", "ssz"),
ProtocolId::new("beacon_block_roots", "1.0.0", "ssz"),
ProtocolId::new("beacon_block_headers", "1.0.0", "ssz"),
ProtocolId::new("beacon_block_bodies", "1.0.0", "ssz"),
ProtocolId::new("hello", "1", "ssz"),
ProtocolId::new("goodbye", "1", "ssz"),
ProtocolId::new("beacon_blocks", "1", "ssz"),
ProtocolId::new("recent_beacon_blocks", "1", "ssz"),
]
}
}
@ -87,7 +90,7 @@ impl ProtocolName for ProtocolId {
// handler to respond to once ready.
pub type InboundOutput<TSocket> = (RPCRequest, InboundFramed<TSocket>);
pub type InboundFramed<TSocket> = Framed<upgrade::Negotiated<TSocket>, InboundCodec>;
pub type InboundFramed<TSocket> = Framed<TimeoutStream<upgrade::Negotiated<TSocket>>, InboundCodec>;
type FnAndThen<TSocket> = fn(
(Option<RPCRequest>, InboundFramed<TSocket>),
) -> FutureResult<InboundOutput<TSocket>, RPCError>;
@ -118,7 +121,9 @@ where
"ssz" | _ => {
let ssz_codec = BaseInboundCodec::new(SSZInboundCodec::new(protocol, MAX_RPC_SIZE));
let codec = InboundCodec::SSZ(ssz_codec);
Framed::new(socket, codec)
let mut timed_socket = TimeoutStream::new(socket);
timed_socket.set_read_timeout(Some(Duration::from_secs(TTFB_TIMEOUT)));
Framed::new(timed_socket, codec)
.into_future()
.timeout(Duration::from_secs(REQUEST_TIMEOUT))
.map_err(RPCError::from as FnMapErr<TSocket>)
@ -144,10 +149,8 @@ where
pub enum RPCRequest {
Hello(HelloMessage),
Goodbye(GoodbyeReason),
BeaconBlockRoots(BeaconBlockRootsRequest),
BeaconBlockHeaders(BeaconBlockHeadersRequest),
BeaconBlockBodies(BeaconBlockBodiesRequest),
BeaconChainState(BeaconChainStateRequest),
BeaconBlocks(BeaconBlocksRequest),
RecentBeaconBlocks(RecentBeaconBlocksRequest),
}
impl UpgradeInfo for RPCRequest {
@ -165,22 +168,11 @@ impl RPCRequest {
pub fn supported_protocols(&self) -> Vec<ProtocolId> {
match self {
// add more protocols when versions/encodings are supported
RPCRequest::Hello(_) => vec![
ProtocolId::new("hello", "1.0.0", "ssz"),
ProtocolId::new("goodbye", "1.0.0", "ssz"),
],
RPCRequest::Goodbye(_) => vec![ProtocolId::new("goodbye", "1.0.0", "ssz")],
RPCRequest::BeaconBlockRoots(_) => {
vec![ProtocolId::new("beacon_block_roots", "1.0.0", "ssz")]
}
RPCRequest::BeaconBlockHeaders(_) => {
vec![ProtocolId::new("beacon_block_headers", "1.0.0", "ssz")]
}
RPCRequest::BeaconBlockBodies(_) => {
vec![ProtocolId::new("beacon_block_bodies", "1.0.0", "ssz")]
}
RPCRequest::BeaconChainState(_) => {
vec![ProtocolId::new("beacon_block_state", "1.0.0", "ssz")]
RPCRequest::Hello(_) => vec![ProtocolId::new("hello", "1", "ssz")],
RPCRequest::Goodbye(_) => vec![ProtocolId::new("goodbye", "1", "ssz")],
RPCRequest::BeaconBlocks(_) => vec![ProtocolId::new("beacon_blocks", "1", "ssz")],
RPCRequest::RecentBeaconBlocks(_) => {
vec![ProtocolId::new("recent_beacon_blocks", "1", "ssz")]
}
}
}
@ -215,7 +207,8 @@ where
) -> Self::Future {
match protocol.encoding.as_str() {
"ssz" | _ => {
let ssz_codec = BaseOutboundCodec::new(SSZOutboundCodec::new(protocol, 4096));
let ssz_codec =
BaseOutboundCodec::new(SSZOutboundCodec::new(protocol, MAX_RPC_SIZE));
let codec = OutboundCodec::SSZ(ssz_codec);
Framed::new(socket, codec).send(self)
}

45
beacon_node/eth2-libp2p/src/service.rs
View File

@ -1,10 +1,10 @@
use crate::behaviour::{Behaviour, BehaviourEvent, PubsubMessage};
use crate::config::*;
use crate::error;
use crate::multiaddr::Protocol;
use crate::rpc::RPCEvent;
use crate::NetworkConfig;
use crate::{Topic, TopicHash};
use crate::{BEACON_ATTESTATION_TOPIC, BEACON_BLOCK_TOPIC};
use futures::prelude::*;
use futures::Stream;
use libp2p::core::{
@ -40,13 +40,12 @@ pub struct Service {
impl Service {
pub fn new(config: NetworkConfig, log: slog::Logger) -> error::Result<Self> {
debug!(log, "Network-libp2p Service starting");
trace!(log, "Libp2p Service starting");
// load the private key from CLI flag, disk or generate a new one
let local_private_key = load_private_key(&config, &log);
let local_peer_id = PeerId::from(local_private_key.public());
info!(log, "Local peer id: {:?}", local_peer_id);
info!(log, "Libp2p Service"; "peer_id" => format!("{:?}", local_peer_id));
let mut swarm = {
// Set up the transport - tcp/ws with secio and mplex/yamux
@ -67,7 +66,7 @@ impl Service {
Ok(_) => {
let mut log_address = listen_multiaddr;
log_address.push(Protocol::P2p(local_peer_id.clone().into()));
info!(log, "Listening on: {}", log_address);
info!(log, "Listening established"; "address" => format!("{}", log_address));
}
Err(err) => {
crit!(
@ -83,20 +82,34 @@ impl Service {
// attempt to connect to user-input libp2p nodes
for multiaddr in config.libp2p_nodes {
match Swarm::dial_addr(&mut swarm, multiaddr.clone()) {
Ok(()) => debug!(log, "Dialing libp2p node: {}", multiaddr),
Ok(()) => debug!(log, "Dialing libp2p peer"; "address" => format!("{}", multiaddr)),
Err(err) => debug!(
log,
"Could not connect to node: {} error: {:?}", multiaddr, err
"Could not connect to peer"; "address" => format!("{}", multiaddr), "Error" => format!("{:?}", err)
),
};
}
// subscribe to default gossipsub topics
let mut topics = vec![];
//TODO: Handle multiple shard attestations. For now we simply use a separate topic for
// attestations
topics.push(Topic::new(BEACON_ATTESTATION_TOPIC.into()));
topics.push(Topic::new(BEACON_BLOCK_TOPIC.into()));
/* Here we subscribe to all the required gossipsub topics required for interop.
* The topic builder adds the required prefix and postfix to the hardcoded topics that we
* must subscribe to.
*/
let topic_builder = |topic| {
Topic::new(format!(
"/{}/{}/{}",
TOPIC_PREFIX, topic, TOPIC_ENCODING_POSTFIX,
))
};
topics.push(topic_builder(BEACON_BLOCK_TOPIC));
topics.push(topic_builder(BEACON_ATTESTATION_TOPIC));
topics.push(topic_builder(VOLUNTARY_EXIT_TOPIC));
topics.push(topic_builder(PROPOSER_SLASHING_TOPIC));
topics.push(topic_builder(ATTESTER_SLASHING_TOPIC));
// Add any topics specified by the user
topics.append(
&mut config
.topics
@ -109,13 +122,13 @@ impl Service {
let mut subscribed_topics = vec![];
for topic in topics {
if swarm.subscribe(topic.clone()) {
trace!(log, "Subscribed to topic: {:?}", topic);
trace!(log, "Subscribed to topic"; "topic" => format!("{}", topic));
subscribed_topics.push(topic);
} else {
warn!(log, "Could not subscribe to topic: {:?}", topic)
warn!(log, "Could not subscribe to topic"; "topic" => format!("{}", topic));
}
}
info!(log, "Subscribed to topics: {:?}", subscribed_topics);
info!(log, "Subscribed to topics"; "topics" => format!("{:?}", subscribed_topics.iter().map(|t| format!("{}", t)).collect::<Vec<String>>()));
Ok(Service {
local_peer_id,
@ -140,7 +153,7 @@ impl Stream for Service {
topics,
message,
} => {
trace!(self.log, "Gossipsub message received"; "Message" => format!("{:?}", message));
trace!(self.log, "Gossipsub message received"; "service" => "Swarm");
return Ok(Async::Ready(Some(Libp2pEvent::PubsubMessage {
source,
topics,
@ -255,7 +268,7 @@ fn load_private_key(config: &NetworkConfig, log: &slog::Logger) -> Keypair {
Err(e) => {
warn!(
log,
"Could not write node key to file: {:?}. Error: {}", network_key_f, e
"Could not write node key to file: {:?}. error: {}", network_key_f, e
);
}
}

307
beacon_node/network/src/message_handler.rs
View File

@ -1,8 +1,7 @@
use crate::error;
use crate::service::{NetworkMessage, OutgoingMessage};
use crate::service::NetworkMessage;
use crate::sync::SimpleSync;
use beacon_chain::{BeaconChain, BeaconChainTypes};
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::{
behaviour::PubsubMessage,
rpc::{RPCError, RPCErrorResponse, RPCRequest, RPCResponse, RequestId},
@ -10,11 +9,11 @@ use eth2_libp2p::{
};
use futures::future::Future;
use futures::stream::Stream;
use slog::{debug, warn};
use slog::{debug, trace, warn};
use ssz::{Decode, DecodeError};
use std::sync::Arc;
use tokio::sync::mpsc;
use types::{Attestation, BeaconBlock, BeaconBlockHeader};
use types::{Attestation, AttesterSlashing, BeaconBlock, ProposerSlashing, VoluntaryExit};
/// Handles messages received from the network and client and organises syncing.
pub struct MessageHandler<T: BeaconChainTypes> {
@ -22,8 +21,6 @@ pub struct MessageHandler<T: BeaconChainTypes> {
_chain: Arc<BeaconChain<T>>,
/// The syncing framework.
sync: SimpleSync<T>,
/// The context required to send messages to, and process messages from peers.
network_context: NetworkContext,
/// The `MessageHandler` logger.
log: slog::Logger,
}
@ -49,23 +46,20 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
executor: &tokio::runtime::TaskExecutor,
log: slog::Logger,
) -> error::Result<mpsc::UnboundedSender<HandlerMessage>> {
debug!(log, "Service starting");
trace!(log, "Service starting");
let (handler_send, handler_recv) = mpsc::unbounded_channel();
// Initialise sync and begin processing in thread
// generate the Message handler
let sync = SimpleSync::new(beacon_chain.clone(), &log);
let sync = SimpleSync::new(beacon_chain.clone(), network_send, &log);
// generate the Message handler
let mut handler = MessageHandler {
_chain: beacon_chain.clone(),
sync,
network_context: NetworkContext::new(network_send, log.clone()),
log: log.clone(),
};
// spawn handler task
// TODO: Handle manual termination of thread
// spawn handler task and move the message handler instance into the spawned thread
executor.spawn(
handler_recv
.for_each(move |msg| Ok(handler.handle_message(msg)))
@ -82,17 +76,17 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
match message {
// we have initiated a connection to a peer
HandlerMessage::PeerDialed(peer_id) => {
self.sync.on_connect(peer_id, &mut self.network_context);
self.sync.on_connect(peer_id);
}
// A peer has disconnected
HandlerMessage::PeerDisconnected(peer_id) => {
self.sync.on_disconnect(peer_id);
}
// we have received an RPC message request/response
// An RPC message request/response has been received
HandlerMessage::RPC(peer_id, rpc_event) => {
self.handle_rpc_message(peer_id, rpc_event);
}
// we have received an RPC message request/response
// An RPC message request/response has been received
HandlerMessage::PubsubMessage(peer_id, gossip) => {
self.handle_gossip(peer_id, gossip);
}
@ -105,7 +99,7 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
fn handle_rpc_message(&mut self, peer_id: PeerId, rpc_message: RPCEvent) {
match rpc_message {
RPCEvent::Request(id, req) => self.handle_rpc_request(peer_id, id, req),
RPCEvent::Response(_id, resp) => self.handle_rpc_response(peer_id, resp),
RPCEvent::Response(id, resp) => self.handle_rpc_response(peer_id, id, resp),
RPCEvent::Error(id, error) => self.handle_rpc_error(peer_id, id, error),
}
}
@ -113,106 +107,81 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
/// A new RPC request has been received from the network.
fn handle_rpc_request(&mut self, peer_id: PeerId, request_id: RequestId, request: RPCRequest) {
match request {
RPCRequest::Hello(hello_message) => self.sync.on_hello_request(
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.");
RPCRequest::Hello(hello_message) => {
self.sync
.on_hello_request(peer_id, request_id, hello_message)
}
RPCRequest::Goodbye(goodbye_reason) => {
debug!(
self.log, "PeerGoodbye";
"peer" => format!("{:?}", peer_id),
"reason" => format!("{:?}", goodbye_reason),
);
self.sync.on_disconnect(peer_id);
}
RPCRequest::BeaconBlocks(request) => self
.sync
.on_beacon_blocks_request(peer_id, request_id, request),
RPCRequest::RecentBeaconBlocks(request) => self
.sync
.on_recent_beacon_blocks_request(peer_id, request_id, request),
}
}
/// An RPC response has been received from the network.
// we match on id and ignore responses past the timeout.
fn handle_rpc_response(&mut self, peer_id: PeerId, error_response: RPCErrorResponse) {
fn handle_rpc_response(
&mut self,
peer_id: PeerId,
request_id: RequestId,
error_response: RPCErrorResponse,
) {
// an error could have occurred.
// TODO: Handle Error gracefully
match error_response {
RPCErrorResponse::InvalidRequest(error) => {
warn!(self.log, "";"peer" => format!("{:?}", peer_id), "Invalid Request" => error.as_string())
warn!(self.log, "Peer indicated invalid request";"peer_id" => format!("{:?}", peer_id), "error" => error.as_string())
}
RPCErrorResponse::ServerError(error) => {
warn!(self.log, "";"peer" => format!("{:?}", peer_id), "Server Error" => error.as_string())
warn!(self.log, "Peer internal server error";"peer_id" => format!("{:?}", peer_id), "error" => error.as_string())
}
RPCErrorResponse::Unknown(error) => {
warn!(self.log, "";"peer" => format!("{:?}", peer_id), "Unknown Error" => error.as_string())
warn!(self.log, "Unknown peer error";"peer" => format!("{:?}", peer_id), "error" => error.as_string())
}
RPCErrorResponse::Success(response) => {
match response {
RPCResponse::Hello(hello_message) => {
self.sync.on_hello_response(
peer_id,
hello_message,
&mut self.network_context,
);
self.sync.on_hello_response(peer_id, hello_message);
}
RPCResponse::BeaconBlockRoots(response) => {
self.sync.on_beacon_block_roots_response(
peer_id,
response,
&mut self.network_context,
);
}
RPCResponse::BeaconBlockHeaders(response) => {
match self.decode_block_headers(response) {
Ok(decoded_block_headers) => {
self.sync.on_beacon_block_headers_response(
RPCResponse::BeaconBlocks(response) => {
match self.decode_beacon_blocks(&response) {
Ok(beacon_blocks) => {
self.sync.on_beacon_blocks_response(
peer_id,
decoded_block_headers,
&mut self.network_context,
request_id,
beacon_blocks,
);
}
Err(_e) => {
warn!(self.log, "Peer sent invalid block headers";"peer" => format!("{:?}", peer_id))
Err(e) => {
// TODO: Down-vote Peer
warn!(self.log, "Peer sent invalid BEACON_BLOCKS response";"peer" => format!("{:?}", peer_id), "error" => format!("{:?}", e));
}
}
}
RPCResponse::BeaconBlockBodies(response) => {
match self.decode_block_bodies(response) {
Ok(decoded_block_bodies) => {
self.sync.on_beacon_block_bodies_response(
RPCResponse::RecentBeaconBlocks(response) => {
match self.decode_beacon_blocks(&response) {
Ok(beacon_blocks) => {
self.sync.on_recent_beacon_blocks_response(
peer_id,
decoded_block_bodies,
&mut self.network_context,
request_id,
beacon_blocks,
);
}
Err(_e) => {
warn!(self.log, "Peer sent invalid block bodies";"peer" => format!("{:?}", peer_id))
Err(e) => {
// TODO: Down-vote Peer
warn!(self.log, "Peer sent invalid BEACON_BLOCKS response";"peer" => format!("{:?}", peer_id), "error" => format!("{:?}", e));
}
}
}
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.");
}
}
}
}
@ -221,43 +190,74 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
/// Handle various RPC errors
fn handle_rpc_error(&mut self, peer_id: PeerId, request_id: RequestId, error: RPCError) {
//TODO: Handle error correctly
warn!(self.log, "RPC Error"; "Peer" => format!("{:?}", peer_id), "Request Id" => format!("{}", request_id), "Error" => format!("{:?}", error));
warn!(self.log, "RPC Error"; "Peer" => format!("{:?}", peer_id), "request_id" => format!("{}", request_id), "Error" => format!("{:?}", error));
}
/// Handle RPC messages
fn handle_gossip(&mut self, peer_id: PeerId, gossip_message: PubsubMessage) {
match gossip_message {
PubsubMessage::Block(message) => match self.decode_gossip_block(message) {
Err(e) => {
debug!(self.log, "Invalid Gossiped Beacon Block"; "Peer" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
Ok(block) => {
let _should_forward_on =
self.sync
.on_block_gossip(peer_id, block, &mut self.network_context);
let _should_forward_on = self.sync.on_block_gossip(peer_id, block);
}
Err(e) => {
debug!(self.log, "Invalid gossiped beacon block"; "peer_id" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
},
PubsubMessage::Attestation(message) => match self.decode_gossip_attestation(message) {
Ok(attestation) => self.sync.on_attestation_gossip(peer_id, attestation),
Err(e) => {
debug!(self.log, "Invalid Gossiped Attestation"; "Peer" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
Ok(attestation) => {
self.sync
.on_attestation_gossip(peer_id, attestation, &mut self.network_context)
debug!(self.log, "Invalid gossiped attestation"; "peer_id" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
},
PubsubMessage::VoluntaryExit(message) => match self.decode_gossip_exit(message) {
Ok(_exit) => {
// TODO: Handle exits
debug!(self.log, "Received a voluntary exit"; "peer_id" => format!("{}", peer_id) );
}
Err(e) => {
debug!(self.log, "Invalid gossiped exit"; "peer_id" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
},
PubsubMessage::ProposerSlashing(message) => {
match self.decode_gossip_proposer_slashing(message) {
Ok(_slashing) => {
// TODO: Handle proposer slashings
debug!(self.log, "Received a proposer slashing"; "peer_id" => format!("{}", peer_id) );
}
Err(e) => {
debug!(self.log, "Invalid gossiped proposer slashing"; "peer_id" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
}
}
PubsubMessage::AttesterSlashing(message) => {
match self.decode_gossip_attestation_slashing(message) {
Ok(_slashing) => {
// TODO: Handle attester slashings
debug!(self.log, "Received an attester slashing"; "peer_id" => format!("{}", peer_id) );
}
Err(e) => {
debug!(self.log, "Invalid gossiped attester slashing"; "peer_id" => format!("{}", peer_id), "Error" => format!("{:?}", e));
}
}
}
PubsubMessage::Unknown(message) => {
// Received a message from an unknown topic. Ignore for now
debug!(self.log, "Unknown Gossip Message"; "Peer" => format!("{}", peer_id), "Message" => format!("{:?}", message));
debug!(self.log, "Unknown Gossip Message"; "peer_id" => format!("{}", peer_id), "Message" => format!("{:?}", message));
}
}
}
/* Decoding of blocks and attestations from the network.
/* Decoding of gossipsub objects from the network.
*
* The decoding is done in the message handler as it has access to to a `BeaconChain` and can
* therefore apply more efficient logic in decoding and verification.
*
* TODO: Apply efficient decoding/verification of these objects
*/
/* Gossipsub Domain Decoding */
// Note: These are not generics as type-specific verification will need to be applied.
fn decode_gossip_block(
&self,
beacon_block: Vec<u8>,
@ -274,80 +274,39 @@ impl<T: BeaconChainTypes + 'static> MessageHandler<T> {
Attestation::from_ssz_bytes(&beacon_block)
}
/// Verifies and decodes the ssz-encoded block bodies received from peers.
fn decode_block_bodies(
fn decode_gossip_exit(&self, voluntary_exit: Vec<u8>) -> Result<VoluntaryExit, DecodeError> {
//TODO: Apply verification before decoding.
VoluntaryExit::from_ssz_bytes(&voluntary_exit)
}
fn decode_gossip_proposer_slashing(
&self,
bodies_response: BeaconBlockBodiesResponse,
) -> Result<DecodedBeaconBlockBodiesResponse<T::EthSpec>, DecodeError> {
proposer_slashing: Vec<u8>,
) -> Result<ProposerSlashing, DecodeError> {
//TODO: Apply verification before decoding.
ProposerSlashing::from_ssz_bytes(&proposer_slashing)
}
fn decode_gossip_attestation_slashing(
&self,
attester_slashing: Vec<u8>,
) -> Result<AttesterSlashing<T::EthSpec>, DecodeError> {
//TODO: Apply verification before decoding.
AttesterSlashing::from_ssz_bytes(&attester_slashing)
}
/* Req/Resp Domain Decoding */
/// Verifies and decodes an ssz-encoded list of `BeaconBlock`s. This list may contain empty
/// entries encoded with an SSZ NULL.
fn decode_beacon_blocks(
&self,
beacon_blocks: &[u8],
) -> Result<Vec<BeaconBlock<T::EthSpec>>, DecodeError> {
if beacon_blocks.is_empty() {
return Ok(Vec::new());
}
//TODO: Implement faster block verification before decoding entirely
let block_bodies = Vec::from_ssz_bytes(&bodies_response.block_bodies)?;
Ok(DecodedBeaconBlockBodiesResponse {
block_roots: bodies_response
.block_roots
.expect("Responses must have associated roots"),
block_bodies,
})
}
/// Verifies and decodes the ssz-encoded block headers received from peers.
fn decode_block_headers(
&self,
headers_response: BeaconBlockHeadersResponse,
) -> Result<Vec<BeaconBlockHeader>, DecodeError> {
//TODO: Implement faster header verification before decoding entirely
Vec::from_ssz_bytes(&headers_response.headers)
}
}
// TODO: RPC Rewrite makes this struct fairly pointless
pub struct NetworkContext {
/// The network channel to relay messages to the Network service.
network_send: mpsc::UnboundedSender<NetworkMessage>,
/// The `MessageHandler` logger.
log: slog::Logger,
}
impl NetworkContext {
pub fn new(network_send: mpsc::UnboundedSender<NetworkMessage>, log: slog::Logger) -> Self {
Self { network_send, 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) {
// Note: There is currently no use of keeping track of requests. However the functionality
// is left here for future revisions.
self.send_rpc_event(peer_id, RPCEvent::Request(0, rpc_request));
}
//TODO: Handle Error responses
pub fn send_rpc_response(
&mut self,
peer_id: PeerId,
request_id: RequestId,
rpc_response: RPCResponse,
) {
self.send_rpc_event(
peer_id,
RPCEvent::Response(request_id, RPCErrorResponse::Success(rpc_response)),
);
}
fn send_rpc_event(&mut self, peer_id: PeerId, rpc_event: RPCEvent) {
self.send(peer_id, OutgoingMessage::RPC(rpc_event))
}
fn send(&mut self, peer_id: PeerId, outgoing_message: OutgoingMessage) {
self.network_send
.try_send(NetworkMessage::Send(peer_id, outgoing_message))
.unwrap_or_else(|_| {
warn!(
self.log,
"Could not send RPC message to the network service"
)
});
Vec::from_ssz_bytes(&beacon_blocks)
}
}

19
beacon_node/network/src/service.rs
View File

@ -21,8 +21,7 @@ pub struct Service<T: BeaconChainTypes> {
libp2p_port: u16,
_libp2p_exit: oneshot::Sender<()>,
_network_send: mpsc::UnboundedSender<NetworkMessage>,
_phantom: PhantomData<T>, //message_handler: MessageHandler,
//message_handler_send: Sender<HandlerMessage>
_phantom: PhantomData<T>,
}
impl<T: BeaconChainTypes + 'static> Service<T> {
@ -43,17 +42,19 @@ impl<T: BeaconChainTypes + 'static> Service<T> {
message_handler_log,
)?;
let network_log = log.new(o!("Service" => "Network"));
// launch libp2p service
let libp2p_log = log.new(o!("Service" => "Libp2p"));
let libp2p_service = Arc::new(Mutex::new(LibP2PService::new(config.clone(), libp2p_log)?));
let libp2p_service = Arc::new(Mutex::new(LibP2PService::new(
config.clone(),
network_log.clone(),
)?));
// TODO: Spawn thread to handle libp2p messages and pass to message handler thread.
let libp2p_exit = spawn_service(
libp2p_service.clone(),
network_recv,
message_handler_send,
executor,
log,
network_log,
)?;
let network_service = Service {
libp2p_service,
@ -166,7 +167,7 @@ fn network_service(
},
NetworkMessage::Publish { topics, message } => {
debug!(log, "Sending pubsub message"; "topics" => format!("{:?}",topics));
libp2p_service.lock().swarm.publish(topics, message);
libp2p_service.lock().swarm.publish(&topics, message);
}
},
Ok(Async::NotReady) => break,
@ -190,13 +191,13 @@ fn network_service(
.map_err(|_| "Failed to send RPC to handler")?;
}
Libp2pEvent::PeerDialed(peer_id) => {
debug!(log, "Peer Dialed: {:?}", peer_id);
debug!(log, "Peer Dialed"; "PeerID" => format!("{:?}", peer_id));
message_handler_send
.try_send(HandlerMessage::PeerDialed(peer_id))
.map_err(|_| "Failed to send PeerDialed to handler")?;
}
Libp2pEvent::PeerDisconnected(peer_id) => {
debug!(log, "Peer Disconnected: {:?}", peer_id);
debug!(log, "Peer Disconnected"; "PeerID" => format!("{:?}", peer_id));
message_handler_send
.try_send(HandlerMessage::PeerDisconnected(peer_id))
.map_err(|_| "Failed to send PeerDisconnected to handler")?;

307
beacon_node/network/src/sync/import_queue.rs
View File

@ -1,307 +0,0 @@
use beacon_chain::{BeaconChain, BeaconChainTypes};
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::PeerId;
use slog::error;
use std::collections::HashMap;
use std::sync::Arc;
use std::time::{Duration, Instant};
use tree_hash::TreeHash;
use types::{BeaconBlock, BeaconBlockBody, BeaconBlockHeader, EthSpec, Hash256, Slot};
/// 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 ==
/// tree_hash_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<T: BeaconChainTypes> {
pub chain: Arc<BeaconChain<T>>,
/// Partially imported blocks, keyed by the root of `BeaconBlockBody`.
partials: HashMap<Hash256, PartialBeaconBlock<T::EthSpec>>,
/// Time before a queue entry is considered state.
pub stale_time: Duration,
/// Logging
log: slog::Logger,
}
impl<T: BeaconChainTypes> ImportQueue<T> {
/// Return a new, empty queue.
pub fn new(chain: Arc<BeaconChain<T>>, stale_time: Duration, log: slog::Logger) -> Self {
Self {
chain,
partials: HashMap::new(),
stale_time,
log,
}
}
/// Returns true of the if the `BlockRoot` is found in the `import_queue`.
pub fn contains_block_root(&self, block_root: Hash256) -> bool {
self.partials.contains_key(&block_root)
}
/// Attempts to complete the `BlockRoot` if it is found in the `import_queue`.
///
/// Returns an Enum with a `PartialBeaconBlockCompletion`.
/// Does not remove the `block_root` from the `import_queue`.
pub fn attempt_complete_block(
&self,
block_root: Hash256,
) -> PartialBeaconBlockCompletion<T::EthSpec> {
if let Some(partial) = self.partials.get(&block_root) {
partial.attempt_complete()
} else {
PartialBeaconBlockCompletion::MissingRoot
}
}
/// 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<T::EthSpec>> {
self.partials.remove(&block_root)
}
/// 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_time = self.stale_time;
self.partials
.retain(|_, partial| partial.inserted + stale_time > Instant::now())
}
/// Returns `true` if `self.chain` has not yet processed this block.
pub fn chain_has_not_seen_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
})
}
/// Adds the `block_roots` to the partials queue.
///
/// If a `block_root` 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.
pub fn enqueue_block_roots(
&mut self,
block_roots: &[BlockRootSlot],
sender: PeerId,
) -> Vec<BlockRootSlot> {
// TODO: This will currently not return a `BlockRootSlot` if this root exists but there is no header.
// It would be more robust if it did.
let new_block_root_slots: Vec<BlockRootSlot> = block_roots
.iter()
// Ignore any roots already stored in the queue.
.filter(|brs| !self.contains_block_root(brs.block_root))
// Ignore any roots already processed by the chain.
.filter(|brs| self.chain_has_not_seen_block(&brs.block_root))
.cloned()
.collect();
self.partials.extend(
new_block_root_slots
.iter()
.map(|brs| PartialBeaconBlock {
slot: brs.slot,
block_root: brs.block_root,
sender: sender.clone(),
header: None,
body: None,
inserted: Instant::now(),
})
.map(|partial| (partial.block_root, partial)),
);
new_block_root_slots
}
/// 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
/// not 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.
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.canonical_root()[..]);
if self.chain_has_not_seen_block(&block_root)
&& !self.insert_header(block_root, header, sender.clone())
{
// If a body is empty
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<T::EthSpec>>,
sender: PeerId,
) -> Option<Hash256> {
let mut last_block_hash = None;
for body in bodies {
last_block_hash = self.insert_body(body, sender.clone());
}
last_block_hash
}
pub fn enqueue_full_blocks(&mut self, blocks: Vec<BeaconBlock<T::EthSpec>>, sender: PeerId) {
for block in blocks {
self.insert_full_block(block, 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.
/// Returns true is `body` exists.
fn insert_header(
&mut self,
block_root: Hash256,
header: BeaconBlockHeader,
sender: PeerId,
) -> bool {
let mut exists = false;
self.partials
.entry(block_root)
.and_modify(|partial| {
partial.header = Some(header.clone());
partial.inserted = Instant::now();
if partial.body.is_some() {
exists = true;
}
})
.or_insert_with(|| PartialBeaconBlock {
slot: header.slot,
block_root,
header: Some(header),
body: None,
inserted: Instant::now(),
sender,
});
exists
}
/// Updates an existing partial with the `body`.
///
/// If the body already existed, the `inserted` time is set to `now`.
///
/// Returns the block hash of the inserted body
fn insert_body(
&mut self,
body: BeaconBlockBody<T::EthSpec>,
sender: PeerId,
) -> Option<Hash256> {
let body_root = Hash256::from_slice(&body.tree_hash_root()[..]);
let mut last_root = None;
self.partials.iter_mut().for_each(|(root, mut p)| {
if let Some(header) = &mut p.header {
if body_root == header.body_root {
p.inserted = Instant::now();
p.body = Some(body.clone());
p.sender = sender.clone();
last_root = Some(*root);
}
}
});
last_root
}
/// Updates an existing `partial` with the completed block, or adds a new (complete) partial.
///
/// If the partial already existed, the `inserted` time is set to `now`.
fn insert_full_block(&mut self, block: BeaconBlock<T::EthSpec>, sender: PeerId) {
let block_root = Hash256::from_slice(&block.canonical_root()[..]);
let partial = PartialBeaconBlock {
slot: block.slot,
block_root,
header: Some(block.block_header()),
body: Some(block.body),
inserted: Instant::now(),
sender,
};
self.partials
.entry(block_root)
.and_modify(|existing_partial| *existing_partial = partial.clone())
.or_insert(partial);
}
}
/// Individual components of a `BeaconBlock`, potentially all that are required to form a full
/// `BeaconBlock`.
#[derive(Clone, Debug)]
pub struct PartialBeaconBlock<E: EthSpec> {
pub slot: Slot,
/// `BeaconBlock` root.
pub block_root: Hash256,
pub header: Option<BeaconBlockHeader>,
pub body: Option<BeaconBlockBody<E>>,
/// 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<E: EthSpec> PartialBeaconBlock<E> {
/// Attempts to build a block.
///
/// Does not comsume the `PartialBeaconBlock`.
pub fn attempt_complete(&self) -> PartialBeaconBlockCompletion<E> {
if self.header.is_none() {
PartialBeaconBlockCompletion::MissingHeader(self.slot)
} else if self.body.is_none() {
PartialBeaconBlockCompletion::MissingBody
} else {
PartialBeaconBlockCompletion::Complete(
self.header
.clone()
.unwrap()
.into_block(self.body.clone().unwrap()),
)
}
}
}
/// The result of trying to convert a `BeaconBlock` into a `PartialBeaconBlock`.
pub enum PartialBeaconBlockCompletion<E: EthSpec> {
/// The partial contains a valid BeaconBlock.
Complete(BeaconBlock<E>),
/// The partial does not exist.
MissingRoot,
/// The partial contains a `BeaconBlockRoot` but no `BeaconBlockHeader`.
MissingHeader(Slot),
/// The partial contains a `BeaconBlockRoot` and `BeaconBlockHeader` but no `BeaconBlockBody`.
MissingBody,
}

725
beacon_node/network/src/sync/manager.rs Normal file
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@ -0,0 +1,725 @@
use super::simple_sync::{PeerSyncInfo, FUTURE_SLOT_TOLERANCE};
use beacon_chain::{BeaconChain, BeaconChainTypes, BlockProcessingOutcome};
use eth2_libp2p::rpc::methods::*;
use eth2_libp2p::rpc::RequestId;
use eth2_libp2p::PeerId;
use slog::{debug, info, trace, warn, Logger};
use std::collections::{HashMap, HashSet};
use std::ops::{Add, Sub};
use std::sync::Arc;
use types::{BeaconBlock, EthSpec, Hash256, Slot};
const MAX_BLOCKS_PER_REQUEST: u64 = 10;
/// The number of slots that we can import blocks ahead of us, before going into full Sync mode.
const SLOT_IMPORT_TOLERANCE: usize = 10;
const PARENT_FAIL_TOLERANCE: usize = 3;
const PARENT_DEPTH_TOLERANCE: usize = SLOT_IMPORT_TOLERANCE * 2;
#[derive(PartialEq)]
enum BlockRequestsState {
Queued,
Pending(RequestId),
Complete,
Failed,
}
struct BlockRequests<T: EthSpec> {
target_head_slot: Slot,
target_head_root: Hash256,
downloaded_blocks: Vec<BeaconBlock<T>>,
state: BlockRequestsState,
/// Specifies whether the current state is syncing forwards or backwards.
forward_sync: bool,
/// The current `start_slot` of the batched block request.
current_start_slot: Slot,
}
struct ParentRequests<T: EthSpec> {
downloaded_blocks: Vec<BeaconBlock<T>>,
failed_attempts: usize,
last_submitted_peer: PeerId, // to downvote the submitting peer.
state: BlockRequestsState,
}
impl<T: EthSpec> BlockRequests<T> {
// gets the start slot for next batch
// last block slot downloaded plus 1
fn update_start_slot(&mut self) {
if self.forward_sync {
self.current_start_slot += Slot::from(MAX_BLOCKS_PER_REQUEST);
} else {
self.current_start_slot -= Slot::from(MAX_BLOCKS_PER_REQUEST);
}
self.state = BlockRequestsState::Queued;
}
}
#[derive(PartialEq, Debug, Clone)]
enum ManagerState {
Syncing,
Regular,
Stalled,
}
pub(crate) enum ImportManagerOutcome {
Idle,
RequestBlocks {
peer_id: PeerId,
request_id: RequestId,
request: BeaconBlocksRequest,
},
/// Updates information with peer via requesting another HELLO handshake.
Hello(PeerId),
RecentRequest(PeerId, RecentBeaconBlocksRequest),
DownvotePeer(PeerId),
}
pub struct ImportManager<T: BeaconChainTypes> {
/// A reference to the underlying beacon chain.
chain: Arc<BeaconChain<T>>,
state: ManagerState,
import_queue: HashMap<PeerId, BlockRequests<T::EthSpec>>,
parent_queue: Vec<ParentRequests<T::EthSpec>>,
full_peers: HashSet<PeerId>,
current_req_id: usize,
log: Logger,
}
impl<T: BeaconChainTypes> ImportManager<T> {
pub fn new(beacon_chain: Arc<BeaconChain<T>>, log: &slog::Logger) -> Self {
ImportManager {
chain: beacon_chain.clone(),
state: ManagerState::Regular,
import_queue: HashMap::new(),
parent_queue: Vec::new(),
full_peers: HashSet::new(),
current_req_id: 0,
log: log.clone(),
}
}
pub fn add_peer(&mut self, peer_id: PeerId, remote: PeerSyncInfo) {
// TODO: Improve comments.
// initially try to download blocks from our current head
// then backwards search all the way back to our finalized epoch until we match on a chain
// has to be done sequentially to find next slot to start the batch from
let local = PeerSyncInfo::from(&self.chain);
// If a peer is within SLOT_IMPORT_TOLERANCE from our head slot, ignore a batch sync
if remote.head_slot.sub(local.head_slot).as_usize() < SLOT_IMPORT_TOLERANCE {
trace!(self.log, "Ignoring full sync with peer";
"peer" => format!("{:?}", peer_id),
"peer_head_slot" => remote.head_slot,
"local_head_slot" => local.head_slot,
);
// remove the peer from the queue if it exists
self.import_queue.remove(&peer_id);
return;
}
if let Some(block_requests) = self.import_queue.get_mut(&peer_id) {
// update the target head slot
if remote.head_slot > block_requests.target_head_slot {
block_requests.target_head_slot = remote.head_slot;
}
} else {
let block_requests = BlockRequests {
target_head_slot: remote.head_slot, // this should be larger than the current head. It is checked in the SyncManager before add_peer is called
target_head_root: remote.head_root,
downloaded_blocks: Vec::new(),
state: BlockRequestsState::Queued,
forward_sync: true,
current_start_slot: self.chain.best_slot(),
};
self.import_queue.insert(peer_id, block_requests);
}
}
pub fn beacon_blocks_response(
&mut self,
peer_id: PeerId,
request_id: RequestId,
mut blocks: Vec<BeaconBlock<T::EthSpec>>,
) {
// find the request
let block_requests = match self
.import_queue
.get_mut(&peer_id)
.filter(|r| r.state == BlockRequestsState::Pending(request_id))
{
Some(req) => req,
_ => {
// No pending request, invalid request_id or coding error
warn!(self.log, "BeaconBlocks response unknown"; "request_id" => request_id);
return;
}
};
// If we are syncing up to a target head block, at least the target head block should be
// returned. If we are syncing back to our last finalized block the request should return
// at least the last block we received (last known block). In diagram form:
//
// unknown blocks requested blocks downloaded blocks
// |-------------------|------------------------|------------------------|
// ^finalized slot ^ requested start slot ^ last known block ^ remote head
if blocks.is_empty() {
debug!(self.log, "BeaconBlocks response was empty"; "request_id" => request_id);
block_requests.update_start_slot();
return;
}
// verify the range of received blocks
// Note that the order of blocks is verified in block processing
let last_sent_slot = blocks[blocks.len() - 1].slot;
if block_requests.current_start_slot > blocks[0].slot
|| block_requests
.current_start_slot
.add(MAX_BLOCKS_PER_REQUEST)
< last_sent_slot
{
//TODO: Downvote peer - add a reason to failed
dbg!(&blocks);
warn!(self.log, "BeaconBlocks response returned out of range blocks";
"request_id" => request_id,
"response_initial_slot" => blocks[0].slot,
"requested_initial_slot" => block_requests.current_start_slot);
// consider this sync failed
block_requests.state = BlockRequestsState::Failed;
return;
}
// Determine if more blocks need to be downloaded. There are a few cases:
// - We have downloaded a batch from our head_slot, which has not reached the remotes head
// (target head). Therefore we need to download another sequential batch.
// - The latest batch includes blocks that greater than or equal to the target_head slot,
// which means we have caught up to their head. We then check to see if the first
// block downloaded matches our head. If so, we are on the same chain and can process
// the blocks. If not we need to sync back further until we are on the same chain. So
// request more blocks.
// - We are syncing backwards (from our head slot) and need to check if we are on the same
// chain. If so, process the blocks, if not, request more blocks all the way up to
// our last finalized slot.
if block_requests.forward_sync {
// append blocks if syncing forward
block_requests.downloaded_blocks.append(&mut blocks);
} else {
// prepend blocks if syncing backwards
block_requests.downloaded_blocks.splice(..0, blocks);
}
// does the batch contain the target_head_slot
let last_element_index = block_requests.downloaded_blocks.len() - 1;
if block_requests.downloaded_blocks[last_element_index].slot
>= block_requests.target_head_slot
|| !block_requests.forward_sync
{
// if the batch is on our chain, this is complete and we can then process.
// Otherwise start backwards syncing until we reach a common chain.
let earliest_slot = block_requests.downloaded_blocks[0].slot;
//TODO: Decide which is faster. Reading block from db and comparing or calculating
//the hash tree root and comparing.
if Some(block_requests.downloaded_blocks[0].canonical_root())
== root_at_slot(&self.chain, earliest_slot)
{
block_requests.state = BlockRequestsState::Complete;
return;
}
// not on the same chain, request blocks backwards
let state = &self.chain.head().beacon_state;
let local_finalized_slot = state
.finalized_checkpoint
.epoch
.start_slot(T::EthSpec::slots_per_epoch());
// check that the request hasn't failed by having no common chain
if local_finalized_slot >= block_requests.current_start_slot {
warn!(self.log, "Peer returned an unknown chain."; "request_id" => request_id);
block_requests.state = BlockRequestsState::Failed;
return;
}
// if this is a forward sync, then we have reached the head without a common chain
// and we need to start syncing backwards.
if block_requests.forward_sync {
// Start a backwards sync by requesting earlier blocks
block_requests.forward_sync = false;
block_requests.current_start_slot = std::cmp::min(
self.chain.best_slot(),
block_requests.downloaded_blocks[0].slot,
);
}
}
// update the start slot and re-queue the batch
block_requests.update_start_slot();
}
pub fn recent_blocks_response(
&mut self,
peer_id: PeerId,
request_id: RequestId,
blocks: Vec<BeaconBlock<T::EthSpec>>,
) {
// find the request
let parent_request = match self
.parent_queue
.iter_mut()
.find(|request| request.state == BlockRequestsState::Pending(request_id))
{
Some(req) => req,
None => {
// No pending request, invalid request_id or coding error
warn!(self.log, "RecentBeaconBlocks response unknown"; "request_id" => request_id);
return;
}
};
// if an empty response is given, the peer didn't have the requested block, try again
if blocks.is_empty() {
parent_request.failed_attempts += 1;
parent_request.state = BlockRequestsState::Queued;
parent_request.last_submitted_peer = peer_id;
return;
}
// currently only support a single block lookup. Reject any response that has more than 1
// block
if blocks.len() != 1 {
//TODO: Potentially downvote the peer
debug!(self.log, "Peer sent more than 1 parent. Ignoring";
"peer_id" => format!("{:?}", peer_id),
"no_parents" => blocks.len()
);
return;
}
// queue for processing
parent_request.state = BlockRequestsState::Complete;
}
pub fn _inject_error(_peer_id: PeerId, _id: RequestId) {
//TODO: Remove block state from pending
}
pub fn peer_disconnect(&mut self, peer_id: &PeerId) {
self.import_queue.remove(peer_id);
self.full_peers.remove(peer_id);
self.update_state();
}
pub fn add_full_peer(&mut self, peer_id: PeerId) {
debug!(
self.log, "Fully synced peer added";
"peer" => format!("{:?}", peer_id),
);
self.full_peers.insert(peer_id);
self.update_state();
}
pub fn add_unknown_block(&mut self, block: BeaconBlock<T::EthSpec>, peer_id: PeerId) {
// if we are not in regular sync mode, ignore this block
if let ManagerState::Regular = self.state {
return;
}
// make sure this block is not already being searched for
// TODO: Potentially store a hashset of blocks for O(1) lookups
for parent_req in self.parent_queue.iter() {
if let Some(_) = parent_req
.downloaded_blocks
.iter()
.find(|d_block| d_block == &&block)
{
// we are already searching for this block, ignore it
return;
}
}
let req = ParentRequests {
downloaded_blocks: vec![block],
failed_attempts: 0,
last_submitted_peer: peer_id,
state: BlockRequestsState::Queued,
};
self.parent_queue.push(req);
}
pub(crate) fn poll(&mut self) -> ImportManagerOutcome {
loop {
// update the state of the manager
self.update_state();
// process potential block requests
if let Some(outcome) = self.process_potential_block_requests() {
return outcome;
}
// process any complete long-range batches
if let Some(outcome) = self.process_complete_batches() {
return outcome;
}
// process any parent block lookup-requests
if let Some(outcome) = self.process_parent_requests() {
return outcome;
}
// process any complete parent lookups
let (re_run, outcome) = self.process_complete_parent_requests();
if let Some(outcome) = outcome {
return outcome;
} else if !re_run {
break;
}
}
return ImportManagerOutcome::Idle;
}
fn update_state(&mut self) {
let previous_state = self.state.clone();
self.state = {
if !self.import_queue.is_empty() {
ManagerState::Syncing
} else if !self.full_peers.is_empty() {
ManagerState::Regular
} else {
ManagerState::Stalled
}
};
if self.state != previous_state {
info!(self.log, "Syncing state updated";
"old_state" => format!("{:?}", previous_state),
"new_state" => format!("{:?}", self.state),
);
}
}
fn process_potential_block_requests(&mut self) -> Option<ImportManagerOutcome> {
// check if an outbound request is required
// Managing a fixed number of outbound requests is maintained at the RPC protocol libp2p
// layer and not needed here.
// If any in queued state we submit a request.
// remove any failed batches
let debug_log = &self.log;
self.import_queue.retain(|peer_id, block_request| {
if let BlockRequestsState::Failed = block_request.state {
debug!(debug_log, "Block import from peer failed";
"peer_id" => format!("{:?}", peer_id),
"downloaded_blocks" => block_request.downloaded_blocks.len()
);
false
} else {
true
}
});
// process queued block requests
for (peer_id, block_requests) in self
.import_queue
.iter_mut()
.find(|(_peer_id, req)| req.state == BlockRequestsState::Queued)
{
let request_id = self.current_req_id;
block_requests.state = BlockRequestsState::Pending(request_id);
self.current_req_id += 1;
let request = BeaconBlocksRequest {
head_block_root: block_requests.target_head_root,
start_slot: block_requests.current_start_slot.as_u64(),
count: MAX_BLOCKS_PER_REQUEST,
step: 0,
};
return Some(ImportManagerOutcome::RequestBlocks {
peer_id: peer_id.clone(),
request,
request_id,
});
}
None
}
fn process_complete_batches(&mut self) -> Option<ImportManagerOutcome> {
let completed_batches = self
.import_queue
.iter()
.filter(|(_peer, block_requests)| block_requests.state == BlockRequestsState::Complete)
.map(|(peer, _)| peer)
.cloned()
.collect::<Vec<PeerId>>();
for peer_id in completed_batches {
let block_requests = self.import_queue.remove(&peer_id).expect("key exists");
match self.process_blocks(block_requests.downloaded_blocks.clone()) {
Ok(()) => {
//TODO: Verify it's impossible to have empty downloaded_blocks
let last_element = block_requests.downloaded_blocks.len() - 1;
debug!(self.log, "Blocks processed successfully";
"peer" => format!("{:?}", peer_id),
"start_slot" => block_requests.downloaded_blocks[0].slot,
"end_slot" => block_requests.downloaded_blocks[last_element].slot,
"no_blocks" => last_element + 1,
);
// Re-HELLO to ensure we are up to the latest head
return Some(ImportManagerOutcome::Hello(peer_id));
}
Err(e) => {
let last_element = block_requests.downloaded_blocks.len() - 1;
warn!(self.log, "Block processing failed";
"peer" => format!("{:?}", peer_id),
"start_slot" => block_requests.downloaded_blocks[0].slot,
"end_slot" => block_requests.downloaded_blocks[last_element].slot,
"no_blocks" => last_element + 1,
"error" => format!("{:?}", e),
);
return Some(ImportManagerOutcome::DownvotePeer(peer_id));
}
}
}
None
}
fn process_parent_requests(&mut self) -> Option<ImportManagerOutcome> {
// remove any failed requests
let debug_log = &self.log;
self.parent_queue.retain(|parent_request| {
if parent_request.state == BlockRequestsState::Failed {
debug!(debug_log, "Parent import failed";
"block" => format!("{:?}",parent_request.downloaded_blocks[0].canonical_root()),
"ancestors_found" => parent_request.downloaded_blocks.len()
);
false
} else {
true
}
});
// check to make sure there are peers to search for the parent from
if self.full_peers.is_empty() {
return None;
}
// check if parents need to be searched for
for parent_request in self.parent_queue.iter_mut() {
if parent_request.failed_attempts >= PARENT_FAIL_TOLERANCE {
parent_request.state = BlockRequestsState::Failed;
continue;
} else if parent_request.state == BlockRequestsState::Queued {
// check the depth isn't too large
if parent_request.downloaded_blocks.len() >= PARENT_DEPTH_TOLERANCE {
parent_request.state = BlockRequestsState::Failed;
continue;
}
parent_request.state = BlockRequestsState::Pending(self.current_req_id);
self.current_req_id += 1;
let last_element_index = parent_request.downloaded_blocks.len() - 1;
let parent_hash = parent_request.downloaded_blocks[last_element_index].parent_root;
let req = RecentBeaconBlocksRequest {
block_roots: vec![parent_hash],
};
// select a random fully synced peer to attempt to download the parent block
let peer_id = self.full_peers.iter().next().expect("List is not empty");
return Some(ImportManagerOutcome::RecentRequest(peer_id.clone(), req));
}
}
None
}
fn process_complete_parent_requests(&mut self) -> (bool, Option<ImportManagerOutcome>) {
// flag to determine if there is more process to drive or if the manager can be switched to
// an idle state
let mut re_run = false;
// Find any parent_requests ready to be processed
for completed_request in self
.parent_queue
.iter_mut()
.filter(|req| req.state == BlockRequestsState::Complete)
{
// verify the last added block is the parent of the last requested block
let last_index = completed_request.downloaded_blocks.len() - 1;
let expected_hash = completed_request.downloaded_blocks[last_index].parent_root;
// Note: the length must be greater than 1 so this cannot panic.
let block_hash = completed_request.downloaded_blocks[last_index - 1].canonical_root();
if block_hash != expected_hash {
// remove the head block
let _ = completed_request.downloaded_blocks.pop();
completed_request.state = BlockRequestsState::Queued;
//TODO: Potentially downvote the peer
let peer = completed_request.last_submitted_peer.clone();
debug!(self.log, "Peer sent invalid parent. Ignoring";
"peer_id" => format!("{:?}",peer),
"received_block" => format!("{}", block_hash),
"expected_parent" => format!("{}", expected_hash),
);
return (true, Some(ImportManagerOutcome::DownvotePeer(peer)));
}
// try and process the list of blocks up to the requested block
while !completed_request.downloaded_blocks.is_empty() {
let block = completed_request
.downloaded_blocks
.pop()
.expect("Block must exist exist");
match self.chain.process_block(block.clone()) {
Ok(BlockProcessingOutcome::ParentUnknown { parent: _ }) => {
// need to keep looking for parents
completed_request.downloaded_blocks.push(block);
completed_request.state = BlockRequestsState::Queued;
re_run = true;
break;
}
Ok(BlockProcessingOutcome::Processed { block_root: _ }) => {}
Ok(outcome) => {
// it's a future slot or an invalid block, remove it and try again
completed_request.failed_attempts += 1;
trace!(
self.log, "Invalid parent block";
"outcome" => format!("{:?}", outcome),
"peer" => format!("{:?}", completed_request.last_submitted_peer),
);
completed_request.state = BlockRequestsState::Queued;
re_run = true;
return (
re_run,
Some(ImportManagerOutcome::DownvotePeer(
completed_request.last_submitted_peer.clone(),
)),
);
}
Err(e) => {
completed_request.failed_attempts += 1;
warn!(
self.log, "Parent processing error";
"error" => format!("{:?}", e)
);
completed_request.state = BlockRequestsState::Queued;
re_run = true;
return (
re_run,
Some(ImportManagerOutcome::DownvotePeer(
completed_request.last_submitted_peer.clone(),
)),
);
}
}
}
}
// remove any full completed and processed parent chains
self.parent_queue.retain(|req| {
if req.state == BlockRequestsState::Complete {
false
} else {
true
}
});
(re_run, None)
}
fn process_blocks(&mut self, blocks: Vec<BeaconBlock<T::EthSpec>>) -> Result<(), String> {
for block in blocks {
let processing_result = self.chain.process_block(block.clone());
if let Ok(outcome) = processing_result {
match outcome {
BlockProcessingOutcome::Processed { block_root } => {
// The block was valid and we processed it successfully.
trace!(
self.log, "Imported block from network";
"slot" => block.slot,
"block_root" => format!("{}", block_root),
);
}
BlockProcessingOutcome::ParentUnknown { parent } => {
// blocks should be sequential and all parents should exist
trace!(
self.log, "ParentBlockUnknown";
"parent_root" => format!("{}", parent),
"baby_block_slot" => block.slot,
);
return Err(format!(
"Block at slot {} has an unknown parent.",
block.slot
));
}
BlockProcessingOutcome::FutureSlot {
present_slot,
block_slot,
} => {
if present_slot + FUTURE_SLOT_TOLERANCE >= block_slot {
// The block is too far in the future, drop it.
trace!(
self.log, "FutureBlock";
"msg" => "block for future slot rejected, check your time",
"present_slot" => present_slot,
"block_slot" => block_slot,
"FUTURE_SLOT_TOLERANCE" => FUTURE_SLOT_TOLERANCE,
);
return Err(format!(
"Block at slot {} is too far in the future",
block.slot
));
} else {
// The block is in the future, but not too far.
trace!(
self.log, "QueuedFutureBlock";
"msg" => "queuing future block, check your time",
"present_slot" => present_slot,
"block_slot" => block_slot,
"FUTURE_SLOT_TOLERANCE" => FUTURE_SLOT_TOLERANCE,
);
}
}
BlockProcessingOutcome::FinalizedSlot => {
trace!(
self.log, "Finalized or earlier block processed";
"outcome" => format!("{:?}", outcome),
);
// block reached our finalized slot or was earlier, move to the next block
}
_ => {
trace!(
self.log, "InvalidBlock";
"msg" => "peer sent invalid block",
"outcome" => format!("{:?}", outcome),
);
return Err(format!("Invalid block at slot {}", block.slot));
}
}
} else {
trace!(
self.log, "BlockProcessingFailure";
"msg" => "unexpected condition in processing block.",
"outcome" => format!("{:?}", processing_result)
);
return Err(format!(
"Unexpected block processing error: {:?}",
processing_result
));
}
}
Ok(())
}
}
fn root_at_slot<T: BeaconChainTypes>(
chain: &Arc<BeaconChain<T>>,
target_slot: Slot,
) -> Option<Hash256> {
chain
.rev_iter_block_roots()
.find(|(_root, slot)| *slot == target_slot)
.map(|(root, _slot)| root)
}

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

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

998
beacon_node/network/src/sync/simple_sync.rs
View File

File diff suppressed because it is too large Load Diff

2
beacon_node/rest_api/Cargo.toml
View File

@ -6,6 +6,7 @@ edition = "2018"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
bls = { path = "../../eth2/utils/bls" }
beacon_chain = { path = "../beacon_chain" }
network = { path = "../network" }
eth2-libp2p = { path = "../eth2-libp2p" }
@ -29,3 +30,4 @@ url = "2.0"
lazy_static = "1.3.0"
lighthouse_metrics = { path = "../../eth2/utils/lighthouse_metrics" }
slot_clock = { path = "../../eth2/utils/slot_clock" }
hex = "0.3.2"

30
beacon_node/rest_api/src/helpers.rs
View File

@ -1,5 +1,10 @@
use crate::ApiError;
use crate::{ApiError, ApiResult};
use beacon_chain::{BeaconChain, BeaconChainTypes};
use bls::PublicKey;
use hex;
use hyper::{Body, Request, StatusCode};
use serde::de::value::StringDeserializer;
use serde_json::Deserializer;
use store::{iter::AncestorIter, Store};
use types::{BeaconState, EthSpec, Hash256, RelativeEpoch, Slot};
@ -31,6 +36,23 @@ pub fn parse_root(string: &str) -> Result<Hash256, ApiError> {
}
}
/// Parse a PublicKey from a `0x` prefixed hex string
pub fn parse_pubkey(string: &str) -> Result<PublicKey, ApiError> {
const PREFIX: &str = "0x";
if string.starts_with(PREFIX) {
let pubkey_bytes = hex::decode(string.trim_start_matches(PREFIX))
.map_err(|e| ApiError::InvalidQueryParams(format!("Invalid hex string: {:?}", e)))?;
let pubkey = PublicKey::from_bytes(pubkey_bytes.as_slice()).map_err(|e| {
ApiError::InvalidQueryParams(format!("Unable to deserialize public key: {:?}.", e))
})?;
return Ok(pubkey);
} else {
return Err(ApiError::InvalidQueryParams(
"Public key must have a '0x' prefix".to_string(),
));
}
}
/// Returns the root of the `BeaconBlock` in the canonical chain of `beacon_chain` at the given
/// `slot`, if possible.
///
@ -143,6 +165,12 @@ pub fn state_root_at_slot<T: BeaconChainTypes>(
}
}
pub fn implementation_pending_response(_req: Request<Body>) -> ApiResult {
Err(ApiError::NotImplemented(
"API endpoint has not yet been implemented, but is planned to be soon.".to_owned(),
))
}
#[cfg(test)]
mod test {
use super::*;

46
beacon_node/rest_api/src/lib.rs
View File

@ -10,6 +10,7 @@ mod network;
mod node;
mod spec;
mod url_query;
mod validator;
use beacon_chain::{BeaconChain, BeaconChainTypes};
use client_network::Service as NetworkService;
@ -123,14 +124,26 @@ pub fn start_server<T: BeaconChainTypes>(
// Route the request to the correct handler.
let result = match (req.method(), path.as_ref()) {
// Methods for Beacon Node
//TODO: Remove?
//(&Method::GET, "/beacon/best_slot") => beacon::get_best_slot::<T>(req),
(&Method::GET, "/beacon/head") => beacon::get_head::<T>(req),
(&Method::GET, "/beacon/block") => beacon::get_block::<T>(req),
(&Method::GET, "/beacon/blocks") => helpers::implementation_pending_response(req),
//TODO Is the below replaced by finalized_checkpoint?
(&Method::GET, "/beacon/chainhead") => {
helpers::implementation_pending_response(req)
}
(&Method::GET, "/beacon/block_root") => beacon::get_block_root::<T>(req),
(&Method::GET, "/beacon/latest_finalized_checkpoint") => {
beacon::get_latest_finalized_checkpoint::<T>(req)
}
(&Method::GET, "/beacon/state") => beacon::get_state::<T>(req),
(&Method::GET, "/beacon/state_root") => beacon::get_state_root::<T>(req),
//TODO: Add aggreggate/filtered state lookups here, e.g. /beacon/validators/balances
// Methods for Client
(&Method::GET, "/metrics") => metrics::get_prometheus::<T>(req),
(&Method::GET, "/network/enr") => network::get_enr::<T>(req),
(&Method::GET, "/network/peer_count") => network::get_peer_count::<T>(req),
@ -142,9 +155,40 @@ pub fn start_server<T: BeaconChainTypes>(
}
(&Method::GET, "/node/version") => node::get_version(req),
(&Method::GET, "/node/genesis_time") => node::get_genesis_time::<T>(req),
(&Method::GET, "/node/deposit_contract") => {
helpers::implementation_pending_response(req)
}
(&Method::GET, "/node/syncing") => helpers::implementation_pending_response(req),
(&Method::GET, "/node/fork") => helpers::implementation_pending_response(req),
// Methods for Network
(&Method::GET, "/network/enr") => network::get_enr::<T>(req),
(&Method::GET, "/network/peer_count") => network::get_peer_count::<T>(req),
(&Method::GET, "/network/peer_id") => network::get_peer_id::<T>(req),
(&Method::GET, "/network/peers") => network::get_peer_list::<T>(req),
(&Method::GET, "/network/listen_addresses") => {
network::get_listen_addresses::<T>(req)
}
// Methods for Validator
(&Method::GET, "/validator/duties") => validator::get_validator_duties::<T>(req),
(&Method::GET, "/validator/block") => helpers::implementation_pending_response(req),
(&Method::POST, "/validator/block") => {
helpers::implementation_pending_response(req)
}
(&Method::GET, "/validator/attestation") => {
helpers::implementation_pending_response(req)
}
(&Method::POST, "/validator/attestation") => {
helpers::implementation_pending_response(req)
}
(&Method::GET, "/spec") => spec::get_spec::<T>(req),
(&Method::GET, "/spec/slots_per_epoch") => spec::get_slots_per_epoch::<T>(req),
_ => Err(ApiError::MethodNotAllowed(path.clone())),
_ => Err(ApiError::NotFound(
"Request path and/or method not found.".to_owned(),
)),
};
let response = match result {

23
beacon_node/rest_api/src/url_query.rs
View File

@ -2,6 +2,8 @@ use crate::ApiError;
use hyper::Request;
/// Provides handy functions for parsing the query parameters of a URL.
#[derive(Clone, Copy)]
pub struct UrlQuery<'a>(url::form_urlencoded::Parse<'a>);
impl<'a> UrlQuery<'a> {
@ -11,9 +13,7 @@ impl<'a> UrlQuery<'a> {
pub fn from_request<T>(req: &'a Request<T>) -> Result<Self, ApiError> {
let query_str = req.uri().query().ok_or_else(|| {
ApiError::InvalidQueryParams(
"URL query must be valid and contain at least one
key."
.to_string(),
"URL query must be valid and contain at least one key.".to_string(),
)
})?;
@ -60,6 +60,23 @@ impl<'a> UrlQuery<'a> {
)))
}
}
/// Returns a vector of all values present where `key` is in `keys
///
/// If no match is found, an `InvalidQueryParams` error is returned.
pub fn all_of(mut self, key: &str) -> Result<Vec<String>, ApiError> {
let queries: Vec<_> = self
.0
.filter_map(|(k, v)| {
if k.eq(key) {
Some(v.into_owned())
} else {
None
}
})
.collect();
Ok(queries)
}
}
#[cfg(test)]

149
beacon_node/rest_api/src/validator.rs Normal file
View File

@ -0,0 +1,149 @@
use super::{success_response, ApiResult};
use crate::{helpers::*, ApiError, UrlQuery};
use beacon_chain::{BeaconChain, BeaconChainTypes};
use bls::PublicKey;
use hyper::{Body, Request};
use serde::{Deserialize, Serialize};
use std::sync::Arc;
use store::Store;
use types::beacon_state::EthSpec;
use types::{BeaconBlock, BeaconState, Epoch, RelativeEpoch, Shard, Slot};
#[derive(Debug, Serialize, Deserialize)]
pub struct ValidatorDuty {
/// The validator's BLS public key, uniquely identifying them. _48-bytes, hex encoded with 0x prefix, case insensitive._
pub validator_pubkey: String,
/// The slot at which the validator must attest.
pub attestation_slot: Option<Slot>,
/// The shard in which the validator must attest.
pub attestation_shard: Option<Shard>,
/// The slot in which a validator must propose a block, or `null` if block production is not required.
pub block_proposal_slot: Option<Slot>,
}
impl ValidatorDuty {
pub fn new() -> ValidatorDuty {
ValidatorDuty {
validator_pubkey: "".to_string(),
attestation_slot: None,
attestation_shard: None,
block_proposal_slot: None,
}
}
}
/// HTTP Handler to retrieve a the duties for a set of validators during a particular epoch
pub fn get_validator_duties<T: BeaconChainTypes + 'static>(req: Request<Body>) -> ApiResult {
// Get beacon state
let beacon_chain = req
.extensions()
.get::<Arc<BeaconChain<T>>>()
.ok_or_else(|| ApiError::ServerError("Beacon chain extension missing".to_string()))?;
let _ = beacon_chain
.ensure_state_caches_are_built()
.map_err(|e| ApiError::ServerError(format!("Unable to build state caches: {:?}", e)))?;
let head_state = beacon_chain
.speculative_state()
.expect("This is legacy code and should be removed.");
// Parse and check query parameters
let query = UrlQuery::from_request(&req)?;
let current_epoch = head_state.current_epoch();
let epoch = match query.first_of(&["epoch"]) {
Ok((_, v)) => Epoch::new(v.parse::<u64>().map_err(|e| {
ApiError::InvalidQueryParams(format!("Invalid epoch parameter, must be a u64. {:?}", e))
})?),
Err(_) => {
// epoch not supplied, use the current epoch
current_epoch
}
};
let relative_epoch = RelativeEpoch::from_epoch(current_epoch, epoch).map_err(|e| {
ApiError::InvalidQueryParams(format!(
"Cannot get RelativeEpoch, epoch out of range: {:?}",
e
))
})?;
//TODO: Handle an array of validators, currently only takes one
let mut validators: Vec<PublicKey> = match query.all_of("validator_pubkeys") {
Ok(v) => v
.iter()
.map(|pk| parse_pubkey(pk))
.collect::<Result<Vec<_>, _>>()?,
Err(e) => {
return Err(e);
}
};
let mut duties: Vec<ValidatorDuty> = Vec::new();
// Get a list of all validators for this epoch
let validator_proposers: Vec<usize> = epoch
.slot_iter(T::EthSpec::slots_per_epoch())
.map(|slot| {
head_state
.get_beacon_proposer_index(slot, relative_epoch, &beacon_chain.spec)
.map_err(|e| {
ApiError::ServerError(format!(
"Unable to get proposer index for validator: {:?}",
e
))
})
})
.collect::<Result<Vec<usize>, _>>()?;
// Look up duties for each validator
for val_pk in validators {
let mut duty = ValidatorDuty::new();
duty.validator_pubkey = val_pk.as_hex_string();
// Get the validator index
// If it does not exist in the index, just add a null duty and move on.
let val_index: usize = match head_state.get_validator_index(&val_pk) {
Ok(Some(i)) => i,
Ok(None) => {
duties.append(&mut vec![duty]);
continue;
}
Err(e) => {
return Err(ApiError::ServerError(format!(
"Unable to read validator index cache. {:?}",
e
)));
}
};
// Set attestation duties
match head_state.get_attestation_duties(val_index, relative_epoch) {
Ok(Some(d)) => {
duty.attestation_slot = Some(d.slot);
duty.attestation_shard = Some(d.shard);
}
Ok(None) => {}
Err(e) => {
return Err(ApiError::ServerError(format!(
"unable to read cache for attestation duties: {:?}",
e
)))
}
};
// If the validator is to propose a block, identify the slot
if let Some(slot) = validator_proposers.iter().position(|&v| val_index == v) {
duty.block_proposal_slot = Some(Slot::new(
relative_epoch
.into_epoch(current_epoch)
.start_slot(T::EthSpec::slots_per_epoch())
.as_u64()
+ slot as u64,
));
}
duties.append(&mut vec![duty]);
}
let body = Body::from(
serde_json::to_string(&duties)
.expect("We should always be able to serialize the duties we created."),
);
Ok(success_response(body))
}

23
beacon_node/rpc/src/attestation.rs
View File

@ -1,7 +1,7 @@
use beacon_chain::{BeaconChain, BeaconChainError, BeaconChainTypes};
use eth2_libp2p::PubsubMessage;
use eth2_libp2p::Topic;
use eth2_libp2p::BEACON_ATTESTATION_TOPIC;
use eth2_libp2p::{BEACON_ATTESTATION_TOPIC, TOPIC_ENCODING_POSTFIX, TOPIC_PREFIX};
use futures::Future;
use grpcio::{RpcContext, RpcStatus, RpcStatusCode, UnarySink};
use network::NetworkMessage;
@ -144,7 +144,11 @@ impl<T: BeaconChainTypes> AttestationService for AttestationServiceInstance<T> {
);
// valid attestation, propagate to the network
let topic = Topic::new(BEACON_ATTESTATION_TOPIC.into());
let topic_string = format!(
"/{}/{}/{}",
TOPIC_PREFIX, BEACON_ATTESTATION_TOPIC, TOPIC_ENCODING_POSTFIX
);
let topic = Topic::new(topic_string);
let message = PubsubMessage::Attestation(attestation.as_ssz_bytes());
self.network_chan
@ -174,21 +178,6 @@ impl<T: BeaconChainTypes> AttestationService for AttestationServiceInstance<T> {
resp.set_success(false);
resp.set_msg(format!("InvalidAttestation: {:?}", e).as_bytes().to_vec());
}
Err(BeaconChainError::IndexedAttestationValidationError(e)) => {
// Indexed attestation was invalid
warn!(
self.log,
"PublishAttestation";
"type" => "invalid_attestation",
"error" => format!("{:?}", e),
);
resp.set_success(false);
resp.set_msg(
format!("InvalidIndexedAttestation: {:?}", e)
.as_bytes()
.to_vec(),
);
}
Err(e) => {
// Some other error
warn!(

10
beacon_node/rpc/src/beacon_block.rs
View File

@ -1,6 +1,6 @@
use beacon_chain::{BeaconChain, BeaconChainTypes, BlockProcessingOutcome};
use eth2_libp2p::BEACON_BLOCK_TOPIC;
use eth2_libp2p::{PubsubMessage, Topic};
use eth2_libp2p::{BEACON_BLOCK_TOPIC, TOPIC_ENCODING_POSTFIX, TOPIC_PREFIX};
use futures::Future;
use grpcio::{RpcContext, RpcStatus, RpcStatusCode, UnarySink};
use network::NetworkMessage;
@ -105,8 +105,12 @@ impl<T: BeaconChainTypes> BeaconBlockService for BeaconBlockServiceInstance<T> {
"block_root" => format!("{}", block_root),
);
// get the network topic to send on
let topic = Topic::new(BEACON_BLOCK_TOPIC.into());
// create the network topic to send on
let topic_string = format!(
"/{}/{}/{}",
TOPIC_PREFIX, BEACON_BLOCK_TOPIC, TOPIC_ENCODING_POSTFIX
);
let topic = Topic::new(topic_string);
let message = PubsubMessage::Block(block.as_ssz_bytes());
// Publish the block to the p2p network via gossipsub.

8
beacon_node/src/main.rs
View File

@ -9,7 +9,6 @@ use std::fs;
use std::path::PathBuf;
pub const DEFAULT_DATA_DIR: &str = ".lighthouse";
pub const CLIENT_CONFIG_FILENAME: &str = "beacon-node.toml";
pub const ETH2_CONFIG_FILENAME: &str = "eth2-spec.toml";
pub const TESTNET_CONFIG_FILENAME: &str = "testnet.toml";
@ -228,13 +227,6 @@ fn main() {
_ => unreachable!("guarded by clap"),
};
let drain = match matches.occurrences_of("verbosity") {
0 => drain.filter_level(Level::Info),
1 => drain.filter_level(Level::Debug),
2 => drain.filter_level(Level::Trace),
_ => drain.filter_level(Level::Trace),
};
let mut log = slog::Logger::root(drain.fuse(), o!());
warn!(

3
docs/env.md
View File

@ -22,7 +22,8 @@ steps:
1. Install build dependencies (Arch packages are listed here, your
distribution will likely be similar):
- `clang`: required by RocksDB.
- `protobuf`: required for protobuf serialization (gRPC).
- `protobuf`: required for protobuf serialization (gRPC)
- `libssl-dev`: also gRPC
- `cmake`: required for building protobuf
- `git-lfs`: The Git extension for [Large File
Support](https://git-lfs.github.com/) (required for Ethereum Foundation

1
eth2/lmd_ghost/tests/test.rs
View File

@ -51,7 +51,6 @@ struct ForkedHarness {
impl ForkedHarness {
/// A new standard instance of with constant parameters.
pub fn new() -> Self {
// let (harness, honest_roots, faulty_roots) = get_harness_containing_two_forks();
let harness = BeaconChainHarness::new(VALIDATOR_COUNT);
// Move past the zero slot.

22
eth2/operation_pool/src/lib.rs
View File

@ -16,9 +16,9 @@ use state_processing::per_block_processing::errors::{
};
use state_processing::per_block_processing::{
get_slashable_indices_modular, verify_attestation_for_block_inclusion,
verify_attester_slashing, verify_exit, verify_exit_time_independent_only,
verify_proposer_slashing, verify_transfer, verify_transfer_time_independent_only,
VerifySignatures,
verify_attestation_for_state, verify_attester_slashing, verify_exit,
verify_exit_time_independent_only, verify_proposer_slashing, verify_transfer,
verify_transfer_time_independent_only, VerifySignatures,
};
use std::collections::{btree_map::Entry, hash_map, BTreeMap, HashMap, HashSet};
use std::marker::PhantomData;
@ -134,8 +134,8 @@ impl<T: EthSpec> OperationPool<T> {
verify_attestation_for_block_inclusion(
state,
attestation,
spec,
VerifySignatures::True,
spec,
)
.is_ok()
})
@ -220,7 +220,7 @@ impl<T: EthSpec> OperationPool<T> {
) -> Result<(), ProposerSlashingValidationError> {
// TODO: should maybe insert anyway if the proposer is unknown in the validator index,
// because they could *become* known later
verify_proposer_slashing(&slashing, state, spec)?;
verify_proposer_slashing(&slashing, state, VerifySignatures::True, spec)?;
self.proposer_slashings
.write()
.insert(slashing.proposer_index, slashing);
@ -248,7 +248,7 @@ impl<T: EthSpec> OperationPool<T> {
state: &BeaconState<T>,
spec: &ChainSpec,
) -> Result<(), AttesterSlashingValidationError> {
verify_attester_slashing(state, &slashing, true, spec)?;
verify_attester_slashing(state, &slashing, true, VerifySignatures::True, spec)?;
let id = Self::attester_slashing_id(&slashing, state, spec);
self.attester_slashings.write().insert(id, slashing);
Ok(())
@ -346,7 +346,7 @@ impl<T: EthSpec> OperationPool<T> {
state: &BeaconState<T>,
spec: &ChainSpec,
) -> Result<(), ExitValidationError> {
verify_exit_time_independent_only(state, &exit, spec)?;
verify_exit_time_independent_only(state, &exit, VerifySignatures::True, spec)?;
self.voluntary_exits
.write()
.insert(exit.validator_index, exit);
@ -361,7 +361,7 @@ impl<T: EthSpec> OperationPool<T> {
) -> Vec<VoluntaryExit> {
filter_limit_operations(
self.voluntary_exits.read().values(),
|exit| verify_exit(state, exit, spec).is_ok(),
|exit| verify_exit(state, exit, VerifySignatures::False, spec).is_ok(),
T::MaxVoluntaryExits::to_usize(),
)
}
@ -385,7 +385,7 @@ impl<T: EthSpec> OperationPool<T> {
// The signature of the transfer isn't hashed, but because we check
// it before we insert into the HashSet, we can't end up with duplicate
// transactions.
verify_transfer_time_independent_only(state, &transfer, spec)?;
verify_transfer_time_independent_only(state, &transfer, VerifySignatures::True, spec)?;
self.transfers.write().insert(transfer);
Ok(())
}
@ -397,7 +397,9 @@ impl<T: EthSpec> OperationPool<T> {
self.transfers
.read()
.iter()
.filter(|transfer| verify_transfer(state, transfer, spec).is_ok())
.filter(|transfer| {
verify_transfer(state, transfer, VerifySignatures::False, spec).is_ok()
})
.sorted_by_key(|transfer| std::cmp::Reverse(transfer.fee))
.take(T::MaxTransfers::to_usize())
.cloned()

2
eth2/state_processing/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
flame.sh
*.svg

11
eth2/state_processing/Cargo.toml
View File

@ -4,11 +4,21 @@ version = "0.1.0"
authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[[bench]]
name = "benches"
harness = false
[dev-dependencies]
criterion = "0.2"
env_logger = "0.6.0"
serde = "1.0"
serde_derive = "1.0"
lazy_static = "0.1"
serde_yaml = "0.8"
beacon_chain = { path = "../../beacon_node/beacon_chain" }
store = { path = "../../beacon_node/store" }
lmd_ghost = { path = "../lmd_ghost" }
[dependencies]
bls = { path = "../utils/bls" }
@ -16,6 +26,7 @@ integer-sqrt = "0.1"
itertools = "0.8"
eth2_ssz_types = { path = "../utils/ssz_types" }
merkle_proof = { path = "../utils/merkle_proof" }
log = "0.4"
tree_hash = "0.1"
tree_hash_derive = "0.2"
types = { path = "../types" }

399
eth2/state_processing/benches/benches.rs Normal file
View File

@ -0,0 +1,399 @@
extern crate env_logger;
use criterion::Criterion;
use criterion::{black_box, criterion_group, criterion_main, Benchmark};
use state_processing::{test_utils::BlockBuilder, BlockSignatureStrategy, VerifySignatures};
use types::{BeaconBlock, BeaconState, ChainSpec, EthSpec, MainnetEthSpec, MinimalEthSpec, Slot};
pub const VALIDATORS_LOW: usize = 32_768;
pub const VALIDATORS_HIGH: usize = 300_032;
fn all_benches(c: &mut Criterion) {
env_logger::init();
average_bench::<MinimalEthSpec>(c, "minimal", VALIDATORS_LOW);
average_bench::<MainnetEthSpec>(c, "mainnet", VALIDATORS_LOW);
average_bench::<MainnetEthSpec>(c, "mainnet", VALIDATORS_HIGH);
worst_bench::<MinimalEthSpec>(c, "minimal", VALIDATORS_LOW);
worst_bench::<MainnetEthSpec>(c, "mainnet", VALIDATORS_LOW);
worst_bench::<MainnetEthSpec>(c, "mainnet", VALIDATORS_HIGH);
}
/// Run a bench with a average complexity block.
fn average_bench<T: EthSpec>(c: &mut Criterion, spec_desc: &str, validator_count: usize) {
let spec = &T::default_spec();
let (block, state) = get_average_block(validator_count, spec);
bench_block::<T>(c, block, state, spec, spec_desc, "average_complexity_block");
}
/// Run a bench with a highly complex block.
fn worst_bench<T: EthSpec>(c: &mut Criterion, spec_desc: &str, validator_count: usize) {
let mut spec = &mut T::default_spec();
// Allows the exits to be processed sucessfully.
spec.persistent_committee_period = 0;
let (block, state) = get_worst_block(validator_count, spec);
bench_block::<T>(c, block, state, spec, spec_desc, "high_complexity_block");
}
/// Return a block and state where the block has "average" complexity. I.e., the number of
/// operations we'd generally expect to see.
fn get_average_block<T: EthSpec>(
validator_count: usize,
spec: &ChainSpec,
) -> (BeaconBlock<T>, BeaconState<T>) {
let mut builder: BlockBuilder<T> = BlockBuilder::new(validator_count, &spec);
// builder.num_attestations = T::MaxAttestations::to_usize();
builder.num_attestations = 16;
builder.set_slot(Slot::from(T::slots_per_epoch() * 3 - 2));
builder.build_caches(&spec);
builder.build(&spec)
}
/// Return a block and state where the block has the "worst" complexity. The block is not
/// _guaranteed_ to be the worst possible complexity, it just has the max possible operations.
fn get_worst_block<T: EthSpec>(
validator_count: usize,
spec: &ChainSpec,
) -> (BeaconBlock<T>, BeaconState<T>) {
let mut builder: BlockBuilder<T> = BlockBuilder::new(validator_count, &spec);
builder.maximize_block_operations();
// FIXME: enable deposits once we can generate them with valid proofs.
builder.num_deposits = 0;
builder.set_slot(Slot::from(T::slots_per_epoch() * 3 - 2));
builder.build_caches(&spec);
builder.build(&spec)
}
fn bench_block<T: EthSpec>(
c: &mut Criterion,
block: BeaconBlock<T>,
state: BeaconState<T>,
spec: &ChainSpec,
spec_desc: &str,
block_desc: &str,
) {
let validator_count = state.validators.len();
let title = &format!(
"{}/{}_validators/{}",
spec_desc, validator_count, block_desc
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new(
"per_block_processing/individual_signature_verification",
move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::<T>(
state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
)
.expect("block processing should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
},
)
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new(
"per_block_processing/bulk_signature_verification",
move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::<T>(
state,
&block,
None,
BlockSignatureStrategy::VerifyBulk,
&spec,
)
.expect("block processing should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
},
)
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("per_block_processing/no_signature_verification", move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::<T>(
state,
&block,
None,
BlockSignatureStrategy::NoVerification,
&spec,
)
.expect("block processing should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("process_block_header", move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::process_block_header::<T>(
state,
&block,
None,
VerifySignatures::True,
&spec,
)
.expect("process_block_header should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("verify_block_signature", move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::verify_block_signature::<T>(
state, &block, None, &spec,
)
.expect("verify_block_signature should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("process_attestations", move |b| {
b.iter_batched_ref(
|| (local_spec.clone(), local_state.clone(), local_block.clone()),
|(spec, ref mut state, block)| {
black_box(
state_processing::per_block_processing::process_attestations::<T>(
state,
&block.body.attestations,
VerifySignatures::True,
&spec,
)
.expect("attestation processing should succeed"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("verify_attestation", move |b| {
b.iter_batched_ref(
|| {
let attestation = &local_block.body.attestations[0];
(local_spec.clone(), local_state.clone(), attestation.clone())
},
|(spec, ref mut state, attestation)| {
black_box(
state_processing::per_block_processing::verify_attestation_for_block_inclusion(
state,
&attestation,
VerifySignatures::True,
spec,
)
.expect("should verify attestation"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
c.bench(
&title,
Benchmark::new("get_indexed_attestation", move |b| {
b.iter_batched_ref(
|| {
let attestation = &local_block.body.attestations[0];
(local_state.clone(), attestation.clone())
},
|(ref mut state, attestation)| {
black_box(
state_processing::common::get_indexed_attestation(state, &attestation)
.expect("should get indexed attestation"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("is_valid_indexed_attestation_with_signature", move |b| {
b.iter_batched_ref(
|| {
let attestation = &local_block.body.attestations[0];
let indexed_attestation = state_processing::common::get_indexed_attestation(
&local_state,
&attestation,
)
.expect("should get indexed attestation");
(
local_spec.clone(),
local_state.clone(),
indexed_attestation.clone(),
)
},
|(spec, ref mut state, indexed_attestation)| {
black_box(
state_processing::per_block_processing::is_valid_indexed_attestation(
state,
&indexed_attestation,
VerifySignatures::True,
spec,
)
.expect("should run is_valid_indexed_attestation"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
let local_spec = spec.clone();
c.bench(
&title,
Benchmark::new("is_valid_indexed_attestation_without_signature", move |b| {
b.iter_batched_ref(
|| {
let attestation = &local_block.body.attestations[0];
let indexed_attestation = state_processing::common::get_indexed_attestation(
&local_state,
&attestation,
)
.expect("should get indexed attestation");
(
local_spec.clone(),
local_state.clone(),
indexed_attestation.clone(),
)
},
|(spec, ref mut state, indexed_attestation)| {
black_box(
state_processing::per_block_processing::is_valid_indexed_attestation(
state,
&indexed_attestation,
VerifySignatures::False,
spec,
)
.expect("should run is_valid_indexed_attestation_without_signature"),
)
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
let local_block = block.clone();
let local_state = state.clone();
c.bench(
&title,
Benchmark::new("get_attesting_indices", move |b| {
b.iter_batched_ref(
|| {
let attestation = &local_block.body.attestations[0];
(local_state.clone(), attestation.clone())
},
|(ref mut state, attestation)| {
black_box(state_processing::common::get_attesting_indices(
state,
&attestation.data,
&attestation.aggregation_bits,
))
},
criterion::BatchSize::SmallInput,
)
})
.sample_size(10),
);
}
criterion_group!(benches, all_benches,);
criterion_main!(benches);

8
eth2/state_processing/src/common/get_indexed_attestation.rs
View File

@ -1,16 +1,16 @@
use super::get_attesting_indices;
use crate::per_block_processing::errors::{
AttestationInvalid as Invalid, AttestationValidationError as Error,
};
use crate::per_block_processing::errors::{AttestationInvalid as Invalid, BlockOperationError};
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
/// Convert `attestation` to (almost) indexed-verifiable form.
///
/// Spec v0.8.0
pub fn get_indexed_attestation<T: EthSpec>(
state: &BeaconState<T>,
attestation: &Attestation<T>,
) -> Result<IndexedAttestation<T>, Error> {
) -> Result<IndexedAttestation<T>> {
// Note: we rely on both calls to `get_attesting_indices` to check the bitfield lengths
// against the committee length
let attesting_indices =

4
eth2/state_processing/src/lib.rs
View File

@ -6,11 +6,11 @@ pub mod genesis;
pub mod per_block_processing;
pub mod per_epoch_processing;
pub mod per_slot_processing;
pub mod test_utils;
pub use genesis::{initialize_beacon_state_from_eth1, is_valid_genesis_state};
pub use per_block_processing::{
errors::{BlockInvalid, BlockProcessingError},
per_block_processing, per_block_processing_without_verifying_block_signature,
errors::BlockProcessingError, per_block_processing, BlockSignatureStrategy, VerifySignatures,
};
pub use per_epoch_processing::{errors::EpochProcessingError, per_epoch_processing};
pub use per_slot_processing::{per_slot_processing, Error as SlotProcessingError};

10
eth2/state_processing/src/macros.rs
View File

@ -1,14 +1,16 @@
macro_rules! verify {
($condition: expr, $result: expr) => {
if !$condition {
return Err(Error::Invalid($result));
return Err(crate::per_block_processing::errors::BlockOperationError::invalid($result));
}
};
}
macro_rules! invalid {
($result: expr) => {
return Err(Error::Invalid($result));
macro_rules! block_verify {
($condition: expr, $result: expr) => {
if !$condition {
return Err($result);
}
};
}

238
eth2/state_processing/src/per_block_processing.rs
View File

@ -1,19 +1,19 @@
use crate::common::{initiate_validator_exit, slash_validator};
use errors::{BlockInvalid as Invalid, BlockProcessingError as Error, IntoWithIndex};
use errors::{BlockOperationError, BlockProcessingError, HeaderInvalid, IntoWithIndex};
use rayon::prelude::*;
use signature_sets::{block_proposal_signature_set, randao_signature_set};
use std::collections::HashSet;
use std::convert::TryInto;
use std::iter::FromIterator;
use tree_hash::{SignedRoot, TreeHash};
use tree_hash::SignedRoot;
use types::*;
pub use self::verify_attester_slashing::{
get_slashable_indices, get_slashable_indices_modular, verify_attester_slashing,
};
pub use self::verify_proposer_slashing::verify_proposer_slashing;
pub use is_valid_indexed_attestation::{
is_valid_indexed_attestation, is_valid_indexed_attestation_without_signature,
};
pub use block_signature_verifier::BlockSignatureVerifier;
pub use is_valid_indexed_attestation::is_valid_indexed_attestation;
pub use verify_attestation::{
verify_attestation_for_block_inclusion, verify_attestation_for_state,
};
@ -26,8 +26,10 @@ pub use verify_transfer::{
};
pub mod block_processing_builder;
mod block_signature_verifier;
pub mod errors;
mod is_valid_indexed_attestation;
mod signature_sets;
pub mod tests;
mod verify_attestation;
mod verify_attester_slashing;
@ -36,39 +38,30 @@ mod verify_exit;
mod verify_proposer_slashing;
mod verify_transfer;
#[derive(PartialEq)]
/// The strategy to be used when validating the block's signatures.
#[derive(PartialEq, Clone, Copy)]
pub enum BlockSignatureStrategy {
/// Do not validate any signature. Use with caution.
NoVerification,
/// Validate each signature individually, as its object is being processed.
VerifyIndividual,
/// Verify all signatures in bulk at the beginning of block processing.
VerifyBulk,
}
/// The strategy to be used when validating the block's signatures.
#[derive(PartialEq, Clone, Copy)]
pub enum VerifySignatures {
/// Validate all signatures encountered.
True,
/// Do not validate any signature. Use with caution.
False,
}
/// Updates the state for a new block, whilst validating that the block is valid.
///
/// Returns `Ok(())` if the block is valid and the state was successfully updated. Otherwise
/// returns an error describing why the block was invalid or how the function failed to execute.
///
/// Spec v0.8.0
pub fn per_block_processing<T: EthSpec>(
state: &mut BeaconState<T>,
block: &BeaconBlock<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
per_block_processing_signature_optional(state, block, true, spec)
}
/// Updates the state for a new block, whilst validating that the block is valid, without actually
/// checking the block proposer signature.
///
/// Returns `Ok(())` if the block is valid and the state was successfully updated. Otherwise
/// returns an error describing why the block was invalid or how the function failed to execute.
///
/// Spec v0.8.0
pub fn per_block_processing_without_verifying_block_signature<T: EthSpec>(
state: &mut BeaconState<T>,
block: &BeaconBlock<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
per_block_processing_signature_optional(state, block, false, spec)
impl VerifySignatures {
pub fn is_true(&self) -> bool {
*self == VerifySignatures::True
}
}
/// Updates the state for a new block, whilst validating that the block is valid, optionally
@ -77,27 +70,65 @@ pub fn per_block_processing_without_verifying_block_signature<T: EthSpec>(
/// Returns `Ok(())` if the block is valid and the state was successfully updated. Otherwise
/// returns an error describing why the block was invalid or how the function failed to execute.
///
/// If `block_signed_root` is `Some`, this root is used for verification of the proposers
/// signature. If it is `None` the signed root is calculated here. This parameter only exists to
/// avoid re-calculating the root when it is already known.
///
/// Spec v0.8.0
fn per_block_processing_signature_optional<T: EthSpec>(
pub fn per_block_processing<T: EthSpec>(
mut state: &mut BeaconState<T>,
block: &BeaconBlock<T>,
should_verify_block_signature: bool,
block_signed_root: Option<Hash256>,
block_signature_strategy: BlockSignatureStrategy,
spec: &ChainSpec,
) -> Result<(), Error> {
process_block_header(state, block, spec, should_verify_block_signature)?;
) -> Result<(), BlockProcessingError> {
let verify_signatures = match block_signature_strategy {
BlockSignatureStrategy::VerifyBulk => {
// Verify all signatures in the block at once.
block_verify!(
BlockSignatureVerifier::verify_entire_block(state, block, spec).is_ok(),
BlockProcessingError::BulkSignatureVerificationFailed
);
VerifySignatures::False
}
BlockSignatureStrategy::VerifyIndividual => VerifySignatures::True,
BlockSignatureStrategy::NoVerification => VerifySignatures::False,
};
process_block_header(state, block, block_signed_root, verify_signatures, spec)?;
// Ensure the current and previous epoch caches are built.
state.build_committee_cache(RelativeEpoch::Previous, spec)?;
state.build_committee_cache(RelativeEpoch::Current, spec)?;
process_randao(&mut state, &block, &spec)?;
process_randao(&mut state, &block, verify_signatures, &spec)?;
process_eth1_data(&mut state, &block.body.eth1_data)?;
process_proposer_slashings(&mut state, &block.body.proposer_slashings, spec)?;
process_attester_slashings(&mut state, &block.body.attester_slashings, spec)?;
process_attestations(&mut state, &block.body.attestations, spec)?;
process_proposer_slashings(
&mut state,
&block.body.proposer_slashings,
verify_signatures,
spec,
)?;
process_attester_slashings(
&mut state,
&block.body.attester_slashings,
verify_signatures,
spec,
)?;
process_attestations(
&mut state,
&block.body.attestations,
verify_signatures,
spec,
)?;
process_deposits(&mut state, &block.body.deposits, spec)?;
process_exits(&mut state, &block.body.voluntary_exits, spec)?;
process_transfers(&mut state, &block.body.transfers, spec)?;
process_exits(
&mut state,
&block.body.voluntary_exits,
verify_signatures,
spec,
)?;
process_transfers(&mut state, &block.body.transfers, verify_signatures, spec)?;
Ok(())
}
@ -108,16 +139,17 @@ fn per_block_processing_signature_optional<T: EthSpec>(
pub fn process_block_header<T: EthSpec>(
state: &mut BeaconState<T>,
block: &BeaconBlock<T>,
block_signed_root: Option<Hash256>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
should_verify_block_signature: bool,
) -> Result<(), Error> {
verify!(block.slot == state.slot, Invalid::StateSlotMismatch);
) -> Result<(), BlockOperationError<HeaderInvalid>> {
verify!(block.slot == state.slot, HeaderInvalid::StateSlotMismatch);
let expected_previous_block_root =
Hash256::from_slice(&state.latest_block_header.signed_root());
verify!(
block.parent_root == expected_previous_block_root,
Invalid::ParentBlockRootMismatch {
HeaderInvalid::ParentBlockRootMismatch {
state: expected_previous_block_root,
block: block.parent_root,
}
@ -128,10 +160,13 @@ pub fn process_block_header<T: EthSpec>(
// Verify proposer is not slashed
let proposer_idx = state.get_beacon_proposer_index(block.slot, RelativeEpoch::Current, spec)?;
let proposer = &state.validators[proposer_idx];
verify!(!proposer.slashed, Invalid::ProposerSlashed(proposer_idx));
verify!(
!proposer.slashed,
HeaderInvalid::ProposerSlashed(proposer_idx)
);
if should_verify_block_signature {
verify_block_signature(&state, &block, &spec)?;
if verify_signatures.is_true() {
verify_block_signature(&state, &block, block_signed_root, &spec)?;
}
Ok(())
@ -143,22 +178,12 @@ pub fn process_block_header<T: EthSpec>(
pub fn verify_block_signature<T: EthSpec>(
state: &BeaconState<T>,
block: &BeaconBlock<T>,
block_signed_root: Option<Hash256>,
spec: &ChainSpec,
) -> Result<(), Error> {
let block_proposer = &state.validators
[state.get_beacon_proposer_index(block.slot, RelativeEpoch::Current, spec)?];
let domain = spec.get_domain(
block.slot.epoch(T::slots_per_epoch()),
Domain::BeaconProposer,
&state.fork,
);
) -> Result<(), BlockOperationError<HeaderInvalid>> {
verify!(
block
.signature
.verify(&block.signed_root()[..], domain, &block_proposer.pubkey),
Invalid::BadSignature
block_proposal_signature_set(state, block, block_signed_root, spec)?.is_valid(),
HeaderInvalid::ProposalSignatureInvalid
);
Ok(())
@ -171,24 +196,16 @@ pub fn verify_block_signature<T: EthSpec>(
pub fn process_randao<T: EthSpec>(
state: &mut BeaconState<T>,
block: &BeaconBlock<T>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
let block_proposer = &state.validators
[state.get_beacon_proposer_index(block.slot, RelativeEpoch::Current, spec)?];
// Verify RANDAO reveal.
verify!(
block.body.randao_reveal.verify(
&state.current_epoch().tree_hash_root()[..],
spec.get_domain(
block.slot.epoch(T::slots_per_epoch()),
Domain::Randao,
&state.fork
),
&block_proposer.pubkey
),
Invalid::BadRandaoSignature
);
) -> Result<(), BlockProcessingError> {
if verify_signatures.is_true() {
// Verify RANDAO reveal signature.
block_verify!(
randao_signature_set(state, block, spec)?.is_valid(),
BlockProcessingError::RandaoSignatureInvalid
);
}
// Update the current epoch RANDAO mix.
state.update_randao_mix(state.current_epoch(), &block.body.randao_reveal)?;
@ -227,14 +244,15 @@ pub fn process_eth1_data<T: EthSpec>(
pub fn process_proposer_slashings<T: EthSpec>(
state: &mut BeaconState<T>,
proposer_slashings: &[ProposerSlashing],
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
// Verify proposer slashings in parallel.
proposer_slashings
.par_iter()
.enumerate()
.try_for_each(|(i, proposer_slashing)| {
verify_proposer_slashing(proposer_slashing, &state, spec)
verify_proposer_slashing(proposer_slashing, &state, verify_signatures, spec)
.map_err(|e| e.into_with_index(i))
})?;
@ -255,8 +273,9 @@ pub fn process_proposer_slashings<T: EthSpec>(
pub fn process_attester_slashings<T: EthSpec>(
state: &mut BeaconState<T>,
attester_slashings: &[AttesterSlashing<T>],
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
// Verify the `IndexedAttestation`s in parallel (these are the resource-consuming objects, not
// the `AttesterSlashing`s themselves).
let mut indexed_attestations: Vec<&_> = Vec::with_capacity(attester_slashings.len() * 2);
@ -270,7 +289,7 @@ pub fn process_attester_slashings<T: EthSpec>(
.par_iter()
.enumerate()
.try_for_each(|(i, indexed_attestation)| {
is_valid_indexed_attestation(&state, indexed_attestation, spec)
is_valid_indexed_attestation(&state, indexed_attestation, verify_signatures, spec)
.map_err(|e| e.into_with_index(i))
})?;
let all_indexed_attestations_have_been_checked = true;
@ -283,6 +302,7 @@ pub fn process_attester_slashings<T: EthSpec>(
&state,
&attester_slashing,
should_verify_indexed_attestations,
verify_signatures,
spec,
)
.map_err(|e| e.into_with_index(i))?;
@ -307,8 +327,9 @@ pub fn process_attester_slashings<T: EthSpec>(
pub fn process_attestations<T: EthSpec>(
state: &mut BeaconState<T>,
attestations: &[Attestation<T>],
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
// Ensure the previous epoch cache exists.
state.build_committee_cache(RelativeEpoch::Previous, spec)?;
@ -317,7 +338,7 @@ pub fn process_attestations<T: EthSpec>(
.par_iter()
.enumerate()
.try_for_each(|(i, attestation)| {
verify_attestation_for_block_inclusion(state, attestation, spec, VerifySignatures::True)
verify_attestation_for_block_inclusion(state, attestation, verify_signatures, spec)
.map_err(|e| e.into_with_index(i))
})?;
@ -355,14 +376,17 @@ pub fn process_deposits<T: EthSpec>(
state: &mut BeaconState<T>,
deposits: &[Deposit],
spec: &ChainSpec,
) -> Result<(), Error> {
verify!(
deposits.len() as u64
== std::cmp::min(
T::MaxDeposits::to_u64(),
state.eth1_data.deposit_count - state.eth1_deposit_index
),
Invalid::DepositCountInvalid
) -> Result<(), BlockProcessingError> {
let expected_deposit_len = std::cmp::min(
T::MaxDeposits::to_u64(),
state.eth1_data.deposit_count - state.eth1_deposit_index,
);
block_verify!(
deposits.len() as u64 == expected_deposit_len,
BlockProcessingError::DepositCountInvalid {
expected: expected_deposit_len as usize,
found: deposits.len(),
}
);
// Verify merkle proofs in parallel.
@ -390,7 +414,7 @@ pub fn process_deposit<T: EthSpec>(
deposit: &Deposit,
spec: &ChainSpec,
verify_merkle_proof: bool,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
let deposit_index = state.eth1_deposit_index as usize;
if verify_merkle_proof {
verify_deposit_merkle_proof(state, deposit, state.eth1_deposit_index, spec)
@ -420,7 +444,7 @@ pub fn process_deposit<T: EthSpec>(
} else {
// The signature should be checked for new validators. Return early for a bad
// signature.
if verify_deposit_signature(state, deposit, spec, &pubkey).is_err() {
if verify_deposit_signature(state, deposit, spec).is_err() {
return Ok(());
}
@ -454,14 +478,15 @@ pub fn process_deposit<T: EthSpec>(
pub fn process_exits<T: EthSpec>(
state: &mut BeaconState<T>,
voluntary_exits: &[VoluntaryExit],
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
// Verify exits in parallel.
voluntary_exits
.par_iter()
.enumerate()
.try_for_each(|(i, exit)| {
verify_exit(&state, exit, spec).map_err(|e| e.into_with_index(i))
verify_exit(&state, exit, verify_signatures, spec).map_err(|e| e.into_with_index(i))
})?;
// Update the state in series.
@ -481,19 +506,24 @@ pub fn process_exits<T: EthSpec>(
pub fn process_transfers<T: EthSpec>(
state: &mut BeaconState<T>,
transfers: &[Transfer],
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<(), BlockProcessingError> {
let expected_transfers = HashSet::<_>::from_iter(transfers).len();
// Verify that there are no duplicate transfers
verify!(
transfers.len() == HashSet::<_>::from_iter(transfers).len(),
Invalid::DuplicateTransfers
block_verify!(
transfers.len() == expected_transfers,
BlockProcessingError::DuplicateTransfers {
duplicates: transfers.len().saturating_sub(expected_transfers)
}
);
transfers
.par_iter()
.enumerate()
.try_for_each(|(i, transfer)| {
verify_transfer(&state, transfer, spec).map_err(|e| e.into_with_index(i))
verify_transfer(&state, transfer, verify_signatures, spec)
.map_err(|e| e.into_with_index(i))
})?;
for (i, transfer) in transfers.iter().enumerate() {

227
eth2/state_processing/src/per_block_processing/block_signature_verifier.rs Normal file
View File

@ -0,0 +1,227 @@
use super::signature_sets::{Error as SignatureSetError, Result as SignatureSetResult, *};
use crate::common::get_indexed_attestation;
use crate::per_block_processing::errors::{AttestationInvalid, BlockOperationError};
use bls::{verify_signature_sets, SignatureSet};
use rayon::prelude::*;
use types::{
BeaconBlock, BeaconState, BeaconStateError, ChainSpec, EthSpec, Hash256, IndexedAttestation,
};
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug, PartialEq)]
pub enum Error {
/// All public keys were found but signature verification failed. The block is invalid.
SignatureInvalid,
/// An attestation in the block was invalid. The block is invalid.
AttestationValidationError(BlockOperationError<AttestationInvalid>),
/// There was an error attempting to read from a `BeaconState`. Block
/// validity was not determined.
BeaconStateError(BeaconStateError),
/// Failed to load a signature set. The block may be invalid or we failed to process it.
SignatureSetError(SignatureSetError),
}
impl From<BeaconStateError> for Error {
fn from(e: BeaconStateError) -> Error {
Error::BeaconStateError(e)
}
}
impl From<SignatureSetError> for Error {
fn from(e: SignatureSetError) -> Error {
Error::SignatureSetError(e)
}
}
impl From<BlockOperationError<AttestationInvalid>> for Error {
fn from(e: BlockOperationError<AttestationInvalid>) -> Error {
Error::AttestationValidationError(e)
}
}
/// Reads the BLS signatures and keys from a `BeaconBlock`, storing them as a `Vec<SignatureSet>`.
///
/// This allows for optimizations related to batch BLS operations (see the
/// `Self::verify_entire_block(..)` function).
pub struct BlockSignatureVerifier<'a, T: EthSpec> {
block: &'a BeaconBlock<T>,
state: &'a BeaconState<T>,
spec: &'a ChainSpec,
sets: Vec<SignatureSet<'a>>,
}
impl<'a, T: EthSpec> BlockSignatureVerifier<'a, T> {
/// Create a new verifier without any included signatures. See the `include...` functions to
/// add signatures, and the `verify`
pub fn new(state: &'a BeaconState<T>, block: &'a BeaconBlock<T>, spec: &'a ChainSpec) -> Self {
Self {
block,
state,
spec,
sets: vec![],
}
}
/// Verify all* the signatures in the given `BeaconBlock`, returning `Ok(())` if the signatures
/// are valid.
///
/// * : _Does not verify any signatures in `block.body.deposits`. A block is still valid if it
/// contains invalid signatures on deposits._
///
/// See `Self::verify` for more detail.
pub fn verify_entire_block(
state: &'a BeaconState<T>,
block: &'a BeaconBlock<T>,
spec: &'a ChainSpec,
) -> Result<()> {
let mut verifier = Self::new(state, block, spec);
verifier.include_block_proposal(None)?;
verifier.include_randao_reveal()?;
verifier.include_proposer_slashings()?;
verifier.include_attester_slashings()?;
verifier.include_attestations()?;
/*
* Deposits are not included because they can legally have invalid signatures.
*/
verifier.include_exits()?;
verifier.include_transfers()?;
verifier.verify()
}
/// Verify all* the signatures that have been included in `self`, returning `Ok(())` if the
/// signatures are all valid.
///
/// ## Notes
///
/// Signature validation will take place in accordance to the [Faster verification of multiple
/// BLS signatures](https://ethresear.ch/t/fast-verification-of-multiple-bls-signatures/5407)
/// optimization proposed by Vitalik Buterin.
///
/// It is not possible to know exactly _which_ signature is invalid here, just that
/// _at least one_ was invalid.
///
/// Uses `rayon` to do a map-reduce of Vitalik's method across multiple cores.
pub fn verify(self) -> Result<()> {
let num_sets = self.sets.len();
let num_chunks = std::cmp::max(1, num_sets / rayon::current_num_threads());
let result: bool = self
.sets
.into_par_iter()
.chunks(num_chunks)
.map(|chunk| verify_signature_sets(chunk.into_iter()))
.reduce(|| true, |current, this| current && this);
if result {
Ok(())
} else {
Err(Error::SignatureInvalid)
}
}
/// Includes the block signature for `self.block` for verification.
fn include_block_proposal(&mut self, block_root: Option<Hash256>) -> Result<()> {
let set = block_proposal_signature_set(self.state, self.block, block_root, self.spec)?;
self.sets.push(set);
Ok(())
}
/// Includes the randao signature for `self.block` for verification.
fn include_randao_reveal(&mut self) -> Result<()> {
let set = randao_signature_set(self.state, self.block, self.spec)?;
self.sets.push(set);
Ok(())
}
/// Includes all signatures in `self.block.body.proposer_slashings` for verification.
fn include_proposer_slashings(&mut self) -> Result<()> {
let mut sets: Vec<SignatureSet> = self
.block
.body
.proposer_slashings
.iter()
.map(|proposer_slashing| {
let (set_1, set_2) =
proposer_slashing_signature_set(self.state, proposer_slashing, self.spec)?;
Ok(vec![set_1, set_2])
})
.collect::<SignatureSetResult<Vec<Vec<SignatureSet>>>>()?
.into_iter()
.flatten()
.collect();
self.sets.append(&mut sets);
Ok(())
}
/// Includes all signatures in `self.block.body.attester_slashings` for verification.
fn include_attester_slashings(&mut self) -> Result<()> {
self.block
.body
.attester_slashings
.iter()
.try_for_each(|attester_slashing| {
let (set_1, set_2) =
attester_slashing_signature_sets(&self.state, attester_slashing, &self.spec)?;
self.sets.push(set_1);
self.sets.push(set_2);
Ok(())
})
}
/// Includes all signatures in `self.block.body.attestations` for verification.
fn include_attestations(&mut self) -> Result<Vec<IndexedAttestation<T>>> {
self.block
.body
.attestations
.iter()
.map(|attestation| {
let indexed_attestation = get_indexed_attestation(self.state, attestation)?;
self.sets.push(indexed_attestation_signature_set(
&self.state,
&attestation.signature,
&indexed_attestation,
&self.spec,
)?);
Ok(indexed_attestation)
})
.collect::<Result<_>>()
.map_err(Into::into)
}
/// Includes all signatures in `self.block.body.voluntary_exits` for verification.
fn include_exits(&mut self) -> Result<()> {
let mut sets = self
.block
.body
.voluntary_exits
.iter()
.map(|exit| exit_signature_set(&self.state, exit, &self.spec))
.collect::<SignatureSetResult<_>>()?;
self.sets.append(&mut sets);
Ok(())
}
/// Includes all signatures in `self.block.body.transfers` for verification.
fn include_transfers(&mut self) -> Result<()> {
let mut sets = self
.block
.body
.transfers
.iter()
.map(|transfer| transfer_signature_set(&self.state, transfer, &self.spec))
.collect::<SignatureSetResult<_>>()?;
self.sets.append(&mut sets);
Ok(())
}
}

455
eth2/state_processing/src/per_block_processing/errors.rs
View File

@ -1,42 +1,87 @@
use super::signature_sets::Error as SignatureSetError;
use types::*;
macro_rules! impl_from_beacon_state_error {
($type: ident) => {
impl From<BeaconStateError> for $type {
fn from(e: BeaconStateError) -> $type {
$type::BeaconStateError(e)
}
}
};
/// The error returned from the `per_block_processing` function. Indicates that a block is either
/// invalid, or we were unable to determine it's validity (we encountered an unexpected error).
///
/// Any of the `...Error` variants indicate that at some point during block (and block operation)
/// verification, there was an error. There is no indication as to _where_ that error happened
/// (e.g., when processing attestations instead of when processing deposits).
#[derive(Debug, PartialEq)]
pub enum BlockProcessingError {
RandaoSignatureInvalid,
BulkSignatureVerificationFailed,
StateRootMismatch,
DepositCountInvalid {
expected: usize,
found: usize,
},
DuplicateTransfers {
duplicates: usize,
},
HeaderInvalid {
reason: HeaderInvalid,
},
ProposerSlashingInvalid {
index: usize,
reason: ProposerSlashingInvalid,
},
AttesterSlashingInvalid {
index: usize,
reason: AttesterSlashingInvalid,
},
IndexedAttestationInvalid {
index: usize,
reason: IndexedAttestationInvalid,
},
AttestationInvalid {
index: usize,
reason: AttestationInvalid,
},
DepositInvalid {
index: usize,
reason: DepositInvalid,
},
ExitInvalid {
index: usize,
reason: ExitInvalid,
},
TransferInvalid {
index: usize,
reason: TransferInvalid,
},
BeaconStateError(BeaconStateError),
SignatureSetError(SignatureSetError),
SszTypesError(ssz_types::Error),
}
macro_rules! impl_into_with_index_with_beacon_error {
($error_type: ident, $invalid_type: ident) => {
impl IntoWithIndex<BlockProcessingError> for $error_type {
fn into_with_index(self, i: usize) -> BlockProcessingError {
match self {
$error_type::Invalid(e) => {
BlockProcessingError::Invalid(BlockInvalid::$invalid_type(i, e))
}
$error_type::BeaconStateError(e) => BlockProcessingError::BeaconStateError(e),
}
}
}
};
impl From<BeaconStateError> for BlockProcessingError {
fn from(e: BeaconStateError) -> Self {
BlockProcessingError::BeaconStateError(e)
}
}
macro_rules! impl_into_with_index_without_beacon_error {
($error_type: ident, $invalid_type: ident) => {
impl IntoWithIndex<BlockProcessingError> for $error_type {
fn into_with_index(self, i: usize) -> BlockProcessingError {
match self {
$error_type::Invalid(e) => {
BlockProcessingError::Invalid(BlockInvalid::$invalid_type(i, e))
}
}
}
impl From<SignatureSetError> for BlockProcessingError {
fn from(e: SignatureSetError) -> Self {
BlockProcessingError::SignatureSetError(e)
}
}
impl From<ssz_types::Error> for BlockProcessingError {
fn from(error: ssz_types::Error) -> Self {
BlockProcessingError::SszTypesError(error)
}
}
impl From<BlockOperationError<HeaderInvalid>> for BlockProcessingError {
fn from(e: BlockOperationError<HeaderInvalid>) -> BlockProcessingError {
match e {
BlockOperationError::Invalid(reason) => BlockProcessingError::HeaderInvalid { reason },
BlockOperationError::BeaconStateError(e) => BlockProcessingError::BeaconStateError(e),
BlockOperationError::SignatureSetError(e) => BlockProcessingError::SignatureSetError(e),
BlockOperationError::SszTypesError(e) => BlockProcessingError::SszTypesError(e),
}
};
}
}
/// A conversion that consumes `self` and adds an `index` variable to resulting struct.
@ -48,81 +93,117 @@ pub trait IntoWithIndex<T>: Sized {
fn into_with_index(self, index: usize) -> T;
}
/*
* Block Validation
*/
macro_rules! impl_into_block_processing_error_with_index {
($($type: ident),*) => {
$(
impl IntoWithIndex<BlockProcessingError> for BlockOperationError<$type> {
fn into_with_index(self, index: usize) -> BlockProcessingError {
match self {
BlockOperationError::Invalid(reason) => BlockProcessingError::$type {
index,
reason
},
BlockOperationError::BeaconStateError(e) => BlockProcessingError::BeaconStateError(e),
BlockOperationError::SignatureSetError(e) => BlockProcessingError::SignatureSetError(e),
BlockOperationError::SszTypesError(e) => BlockProcessingError::SszTypesError(e),
}
}
}
)*
};
}
impl_into_block_processing_error_with_index!(
ProposerSlashingInvalid,
AttesterSlashingInvalid,
IndexedAttestationInvalid,
AttestationInvalid,
DepositInvalid,
ExitInvalid,
TransferInvalid
);
pub type HeaderValidationError = BlockOperationError<HeaderInvalid>;
pub type AttesterSlashingValidationError = BlockOperationError<AttesterSlashingInvalid>;
pub type ProposerSlashingValidationError = BlockOperationError<ProposerSlashingInvalid>;
pub type AttestationValidationError = BlockOperationError<AttestationInvalid>;
pub type DepositValidationError = BlockOperationError<DepositInvalid>;
pub type ExitValidationError = BlockOperationError<ExitInvalid>;
pub type TransferValidationError = BlockOperationError<TransferInvalid>;
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum BlockProcessingError {
/// Validation completed successfully and the object is invalid.
Invalid(BlockInvalid),
/// Encountered a `BeaconStateError` whilst attempting to determine validity.
pub enum BlockOperationError<T> {
Invalid(T),
BeaconStateError(BeaconStateError),
/// Encountered an `ssz_types::Error` whilst attempting to determine validity.
SignatureSetError(SignatureSetError),
SszTypesError(ssz_types::Error),
}
impl_from_beacon_state_error!(BlockProcessingError);
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum BlockInvalid {
StateSlotMismatch,
ParentBlockRootMismatch {
state: Hash256,
block: Hash256,
},
ProposerSlashed(usize),
BadSignature,
BadRandaoSignature,
MaxAttestationsExceeded,
MaxAttesterSlashingsExceed,
MaxProposerSlashingsExceeded,
DepositCountInvalid,
DuplicateTransfers,
MaxExitsExceeded,
MaxTransfersExceed,
AttestationInvalid(usize, AttestationInvalid),
/// A `IndexedAttestation` inside an `AttesterSlashing` was invalid.
///
/// To determine the offending `AttesterSlashing` index, divide the error message `usize` by two.
IndexedAttestationInvalid(usize, IndexedAttestationInvalid),
AttesterSlashingInvalid(usize, AttesterSlashingInvalid),
ProposerSlashingInvalid(usize, ProposerSlashingInvalid),
DepositInvalid(usize, DepositInvalid),
// TODO: merge this into the `DepositInvalid` error.
DepositProcessingFailed(usize),
ExitInvalid(usize, ExitInvalid),
TransferInvalid(usize, TransferInvalid),
// NOTE: this is only used in tests, normally a state root mismatch is handled
// in the beacon_chain rather than in state_processing
StateRootMismatch,
impl<T> BlockOperationError<T> {
pub fn invalid(reason: T) -> BlockOperationError<T> {
BlockOperationError::Invalid(reason)
}
}
impl From<ssz_types::Error> for BlockProcessingError {
impl<T> From<BeaconStateError> for BlockOperationError<T> {
fn from(e: BeaconStateError) -> Self {
BlockOperationError::BeaconStateError(e)
}
}
impl<T> From<SignatureSetError> for BlockOperationError<T> {
fn from(e: SignatureSetError) -> Self {
BlockOperationError::SignatureSetError(e)
}
}
impl<T> From<ssz_types::Error> for BlockOperationError<T> {
fn from(error: ssz_types::Error) -> Self {
BlockProcessingError::SszTypesError(error)
BlockOperationError::SszTypesError(error)
}
}
impl Into<BlockProcessingError> for BlockInvalid {
fn into(self) -> BlockProcessingError {
BlockProcessingError::Invalid(self)
}
}
/*
* Attestation Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum AttestationValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(AttestationInvalid),
/// Encountered a `BeaconStateError` whilst attempting to determine validity.
BeaconStateError(BeaconStateError),
pub enum HeaderInvalid {
ProposalSignatureInvalid,
StateSlotMismatch,
ParentBlockRootMismatch { state: Hash256, block: Hash256 },
ProposerSlashed(usize),
}
#[derive(Debug, PartialEq)]
pub enum ProposerSlashingInvalid {
/// The proposer index is not a known validator.
ProposerUnknown(u64),
/// The two proposal have different epochs.
///
/// (proposal_1_slot, proposal_2_slot)
ProposalEpochMismatch(Slot, Slot),
/// The proposals are identical and therefore not slashable.
ProposalsIdentical,
/// The specified proposer cannot be slashed because they are already slashed, or not active.
ProposerNotSlashable(u64),
/// The first proposal signature was invalid.
BadProposal1Signature,
/// The second proposal signature was invalid.
BadProposal2Signature,
}
#[derive(Debug, PartialEq)]
pub enum AttesterSlashingInvalid {
/// The attestation data is identical, an attestation cannot conflict with itself.
AttestationDataIdentical,
/// The attestations were not in conflict.
NotSlashable,
/// The first `IndexedAttestation` was invalid.
IndexedAttestation1Invalid(BlockOperationError<IndexedAttestationInvalid>),
/// The second `IndexedAttestation` was invalid.
IndexedAttestation2Invalid(BlockOperationError<IndexedAttestationInvalid>),
/// The validator index is unknown. One cannot slash one who does not exist.
UnknownValidator(u64),
/// The specified validator has already been withdrawn.
ValidatorAlreadyWithdrawn(u64),
/// There were no indices able to be slashed.
NoSlashableIndices,
}
/// Describes why an object is invalid.
@ -186,69 +267,21 @@ pub enum AttestationInvalid {
BadIndexedAttestation(IndexedAttestationInvalid),
}
impl_from_beacon_state_error!(AttestationValidationError);
impl_into_with_index_with_beacon_error!(AttestationValidationError, AttestationInvalid);
impl From<IndexedAttestationValidationError> for AttestationValidationError {
fn from(err: IndexedAttestationValidationError) -> Self {
let IndexedAttestationValidationError::Invalid(e) = err;
AttestationValidationError::Invalid(AttestationInvalid::BadIndexedAttestation(e))
impl From<BlockOperationError<IndexedAttestationInvalid>>
for BlockOperationError<AttestationInvalid>
{
fn from(e: BlockOperationError<IndexedAttestationInvalid>) -> Self {
match e {
BlockOperationError::Invalid(e) => {
BlockOperationError::invalid(AttestationInvalid::BadIndexedAttestation(e))
}
BlockOperationError::BeaconStateError(e) => BlockOperationError::BeaconStateError(e),
BlockOperationError::SignatureSetError(e) => BlockOperationError::SignatureSetError(e),
BlockOperationError::SszTypesError(e) => BlockOperationError::SszTypesError(e),
}
}
}
impl From<ssz_types::Error> for AttestationValidationError {
fn from(error: ssz_types::Error) -> Self {
Self::from(IndexedAttestationValidationError::from(error))
}
}
/*
* `AttesterSlashing` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum AttesterSlashingValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(AttesterSlashingInvalid),
/// Encountered a `BeaconStateError` whilst attempting to determine validity.
BeaconStateError(BeaconStateError),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum AttesterSlashingInvalid {
/// The attestation data is identical, an attestation cannot conflict with itself.
AttestationDataIdentical,
/// The attestations were not in conflict.
NotSlashable,
/// The first `IndexedAttestation` was invalid.
IndexedAttestation1Invalid(IndexedAttestationInvalid),
/// The second `IndexedAttestation` was invalid.
IndexedAttestation2Invalid(IndexedAttestationInvalid),
/// The validator index is unknown. One cannot slash one who does not exist.
UnknownValidator(u64),
/// The specified validator has already been withdrawn.
ValidatorAlreadyWithdrawn(u64),
/// There were no indices able to be slashed.
NoSlashableIndices,
}
impl_from_beacon_state_error!(AttesterSlashingValidationError);
impl_into_with_index_with_beacon_error!(AttesterSlashingValidationError, AttesterSlashingInvalid);
/*
* `IndexedAttestation` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum IndexedAttestationValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(IndexedAttestationInvalid),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum IndexedAttestationInvalid {
/// The custody bit 0 validators intersect with the bit 1 validators.
@ -271,106 +304,24 @@ pub enum IndexedAttestationInvalid {
UnknownValidator(u64),
/// The indexed attestation aggregate signature was not valid.
BadSignature,
/// There was an error whilst attempting to get a set of signatures. The signatures may have
/// been invalid or an internal error occurred.
SignatureSetError(SignatureSetError),
}
impl Into<IndexedAttestationInvalid> for IndexedAttestationValidationError {
fn into(self) -> IndexedAttestationInvalid {
match self {
IndexedAttestationValidationError::Invalid(e) => e,
}
}
}
impl From<ssz_types::Error> for IndexedAttestationValidationError {
fn from(error: ssz_types::Error) -> Self {
IndexedAttestationValidationError::Invalid(
IndexedAttestationInvalid::CustodyBitfieldBoundsError(error),
)
}
}
impl_into_with_index_without_beacon_error!(
IndexedAttestationValidationError,
IndexedAttestationInvalid
);
/*
* `ProposerSlashing` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum ProposerSlashingValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(ProposerSlashingInvalid),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum ProposerSlashingInvalid {
/// The proposer index is not a known validator.
ProposerUnknown(u64),
/// The two proposal have different epochs.
///
/// (proposal_1_slot, proposal_2_slot)
ProposalEpochMismatch(Slot, Slot),
/// The proposals are identical and therefore not slashable.
ProposalsIdentical,
/// The specified proposer cannot be slashed because they are already slashed, or not active.
ProposerNotSlashable(u64),
/// The first proposal signature was invalid.
BadProposal1Signature,
/// The second proposal signature was invalid.
BadProposal2Signature,
}
impl_into_with_index_without_beacon_error!(
ProposerSlashingValidationError,
ProposerSlashingInvalid
);
/*
* `Deposit` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum DepositValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(DepositInvalid),
/// Encountered a `BeaconStateError` whilst attempting to determine validity.
BeaconStateError(BeaconStateError),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum DepositInvalid {
/// The deposit index does not match the state index.
BadIndex { state: u64, deposit: u64 },
/// The signature (proof-of-possession) does not match the given pubkey.
BadSignature,
/// The signature does not represent a valid BLS signature.
BadSignatureBytes,
/// The signature or pubkey does not represent a valid BLS point.
BadBlsBytes,
/// The specified `branch` and `index` did not form a valid proof that the deposit is included
/// in the eth1 deposit root.
BadMerkleProof,
}
impl_from_beacon_state_error!(DepositValidationError);
impl_into_with_index_with_beacon_error!(DepositValidationError, DepositInvalid);
/*
* `Exit` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum ExitValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(ExitInvalid),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum ExitInvalid {
/// The specified validator is not active.
@ -390,24 +341,11 @@ pub enum ExitInvalid {
},
/// The exit signature was not signed by the validator.
BadSignature,
/// There was an error whilst attempting to get a set of signatures. The signatures may have
/// been invalid or an internal error occurred.
SignatureSetError(SignatureSetError),
}
impl_into_with_index_without_beacon_error!(ExitValidationError, ExitInvalid);
/*
* `Transfer` Validation
*/
/// The object is invalid or validation failed.
#[derive(Debug, PartialEq)]
pub enum TransferValidationError {
/// Validation completed successfully and the object is invalid.
Invalid(TransferInvalid),
/// Encountered a `BeaconStateError` whilst attempting to determine validity.
BeaconStateError(BeaconStateError),
}
/// Describes why an object is invalid.
#[derive(Debug, PartialEq)]
pub enum TransferInvalid {
/// The validator indicated by `transfer.from` is unknown.
@ -460,6 +398,3 @@ pub enum TransferInvalid {
/// (proposer_balance, transfer_fee)
ProposerBalanceOverflow(u64, u64),
}
impl_from_beacon_state_error!(TransferValidationError);
impl_into_with_index_with_beacon_error!(TransferValidationError, TransferInvalid);

121
eth2/state_processing/src/per_block_processing/is_valid_indexed_attestation.rs
View File

@ -1,42 +1,25 @@
use super::errors::{
IndexedAttestationInvalid as Invalid, IndexedAttestationValidationError as Error,
};
use super::errors::{BlockOperationError, IndexedAttestationInvalid as Invalid};
use super::signature_sets::indexed_attestation_signature_set;
use crate::VerifySignatures;
use std::collections::HashSet;
use std::iter::FromIterator;
use tree_hash::TreeHash;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
fn error(reason: Invalid) -> BlockOperationError<Invalid> {
BlockOperationError::invalid(reason)
}
/// Verify an `IndexedAttestation`.
///
/// Spec v0.8.0
pub fn is_valid_indexed_attestation<T: EthSpec>(
state: &BeaconState<T>,
indexed_attestation: &IndexedAttestation<T>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
is_valid_indexed_attestation_parametric(state, indexed_attestation, spec, true)
}
/// Verify but don't check the signature.
///
/// Spec v0.8.0
pub fn is_valid_indexed_attestation_without_signature<T: EthSpec>(
state: &BeaconState<T>,
indexed_attestation: &IndexedAttestation<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
is_valid_indexed_attestation_parametric(state, indexed_attestation, spec, false)
}
/// Optionally check the signature.
///
/// Spec v0.8.0
fn is_valid_indexed_attestation_parametric<T: EthSpec>(
state: &BeaconState<T>,
indexed_attestation: &IndexedAttestation<T>,
spec: &ChainSpec,
verify_signature: bool,
) -> Result<(), Error> {
) -> Result<()> {
let bit_0_indices = &indexed_attestation.custody_bit_0_indices;
let bit_1_indices = &indexed_attestation.custody_bit_1_indices;
@ -59,10 +42,10 @@ fn is_valid_indexed_attestation_parametric<T: EthSpec>(
);
// Check that both vectors of indices are sorted
let check_sorted = |list: &[u64]| -> Result<(), Error> {
let check_sorted = |list: &[u64]| -> Result<()> {
list.windows(2).enumerate().try_for_each(|(i, pair)| {
if pair[0] >= pair[1] {
invalid!(Invalid::BadValidatorIndicesOrdering(i));
return Err(error(Invalid::BadValidatorIndicesOrdering(i)));
} else {
Ok(())
}
@ -72,74 +55,18 @@ fn is_valid_indexed_attestation_parametric<T: EthSpec>(
check_sorted(&bit_0_indices)?;
check_sorted(&bit_1_indices)?;
if verify_signature {
is_valid_indexed_attestation_signature(state, indexed_attestation, spec)?;
if verify_signatures.is_true() {
verify!(
indexed_attestation_signature_set(
state,
&indexed_attestation.signature,
&indexed_attestation,
spec
)?
.is_valid(),
Invalid::BadSignature
);
}
Ok(())
}
/// Create an aggregate public key for a list of validators, failing if any key can't be found.
fn create_aggregate_pubkey<'a, T, I>(
state: &BeaconState<T>,
validator_indices: I,
) -> Result<AggregatePublicKey, Error>
where
I: IntoIterator<Item = &'a u64>,
T: EthSpec,
{
validator_indices.into_iter().try_fold(
AggregatePublicKey::new(),
|mut aggregate_pubkey, &validator_idx| {
state
.validators
.get(validator_idx as usize)
.ok_or_else(|| Error::Invalid(Invalid::UnknownValidator(validator_idx)))
.map(|validator| {
aggregate_pubkey.add(&validator.pubkey);
aggregate_pubkey
})
},
)
}
/// Verify the signature of an IndexedAttestation.
///
/// Spec v0.8.0
fn is_valid_indexed_attestation_signature<T: EthSpec>(
state: &BeaconState<T>,
indexed_attestation: &IndexedAttestation<T>,
spec: &ChainSpec,
) -> Result<(), Error> {
let bit_0_pubkey = create_aggregate_pubkey(state, &indexed_attestation.custody_bit_0_indices)?;
let bit_1_pubkey = create_aggregate_pubkey(state, &indexed_attestation.custody_bit_1_indices)?;
let message_0 = AttestationDataAndCustodyBit {
data: indexed_attestation.data.clone(),
custody_bit: false,
}
.tree_hash_root();
let message_1 = AttestationDataAndCustodyBit {
data: indexed_attestation.data.clone(),
custody_bit: true,
}
.tree_hash_root();
let messages = vec![&message_0[..], &message_1[..]];
let keys = vec![&bit_0_pubkey, &bit_1_pubkey];
let domain = spec.get_domain(
indexed_attestation.data.target.epoch,
Domain::Attestation,
&state.fork,
);
verify!(
indexed_attestation
.signature
.verify_multiple(&messages[..], domain, &keys[..]),
Invalid::BadSignature
);
Ok(())
}

282
eth2/state_processing/src/per_block_processing/signature_sets.rs Normal file
View File

@ -0,0 +1,282 @@
//! A `SignatureSet` is an abstraction over the components of a signature. A `SignatureSet` may be
//! validated individually, or alongside in others in a potentially cheaper bulk operation.
//!
//! This module exposes one function to extract each type of `SignatureSet` from a `BeaconBlock`.
use bls::SignatureSet;
use std::convert::TryInto;
use tree_hash::{SignedRoot, TreeHash};
use types::{
AggregateSignature, AttestationDataAndCustodyBit, AttesterSlashing, BeaconBlock,
BeaconBlockHeader, BeaconState, BeaconStateError, ChainSpec, Deposit, Domain, EthSpec, Fork,
Hash256, IndexedAttestation, ProposerSlashing, PublicKey, RelativeEpoch, Signature, Transfer,
VoluntaryExit,
};
pub type Result<T> = std::result::Result<T, Error>;
#[derive(Debug, PartialEq)]
pub enum Error {
/// Signature verification failed. The block is invalid.
SignatureInvalid,
/// There was an error attempting to read from a `BeaconState`. Block
/// validity was not determined.
BeaconStateError(BeaconStateError),
/// Attempted to find the public key of a validator that does not exist. You cannot distinguish
/// between an error and an invalid block in this case.
ValidatorUnknown(u64),
/// The public keys supplied do not match the number of objects requiring keys. Block validity
/// was not determined.
MismatchedPublicKeyLen { pubkey_len: usize, other_len: usize },
}
impl From<BeaconStateError> for Error {
fn from(e: BeaconStateError) -> Error {
Error::BeaconStateError(e)
}
}
/// A signature set that is valid if a block was signed by the expected block producer.
pub fn block_proposal_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
block: &'a BeaconBlock<T>,
block_signed_root: Option<Hash256>,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let block_proposer = &state.validators
[state.get_beacon_proposer_index(block.slot, RelativeEpoch::Current, spec)?];
let domain = spec.get_domain(
block.slot.epoch(T::slots_per_epoch()),
Domain::BeaconProposer,
&state.fork,
);
let message = if let Some(root) = block_signed_root {
root.as_bytes().to_vec()
} else {
block.signed_root()
};
Ok(SignatureSet::single(
&block.signature,
&block_proposer.pubkey,
message,
domain,
))
}
/// A signature set that is valid if the block proposers randao reveal signature is correct.
pub fn randao_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
block: &'a BeaconBlock<T>,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let block_proposer = &state.validators
[state.get_beacon_proposer_index(block.slot, RelativeEpoch::Current, spec)?];
let domain = spec.get_domain(
block.slot.epoch(T::slots_per_epoch()),
Domain::Randao,
&state.fork,
);
let message = state.current_epoch().tree_hash_root();
Ok(SignatureSet::single(
&block.body.randao_reveal,
&block_proposer.pubkey,
message,
domain,
))
}
/// Returns two signature sets, one for each `BlockHeader` included in the `ProposerSlashing`.
pub fn proposer_slashing_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
proposer_slashing: &'a ProposerSlashing,
spec: &'a ChainSpec,
) -> Result<(SignatureSet<'a>, SignatureSet<'a>)> {
let proposer = state
.validators
.get(proposer_slashing.proposer_index as usize)
.ok_or_else(|| Error::ValidatorUnknown(proposer_slashing.proposer_index))?;
Ok((
block_header_signature_set(state, &proposer_slashing.header_1, &proposer.pubkey, spec)?,
block_header_signature_set(state, &proposer_slashing.header_2, &proposer.pubkey, spec)?,
))
}
/// Returns a signature set that is valid if the given `pubkey` signed the `header`.
fn block_header_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
header: &'a BeaconBlockHeader,
pubkey: &'a PublicKey,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let domain = spec.get_domain(
header.slot.epoch(T::slots_per_epoch()),
Domain::BeaconProposer,
&state.fork,
);
let message = header.signed_root();
Ok(SignatureSet::single(
&header.signature,
pubkey,
message,
domain,
))
}
/// Returns the signature set for the given `indexed_attestation`.
pub fn indexed_attestation_signature_set<'a, 'b, T: EthSpec>(
state: &'a BeaconState<T>,
signature: &'a AggregateSignature,
indexed_attestation: &'b IndexedAttestation<T>,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let message_0 = AttestationDataAndCustodyBit {
data: indexed_attestation.data.clone(),
custody_bit: false,
}
.tree_hash_root();
let message_1 = AttestationDataAndCustodyBit {
data: indexed_attestation.data.clone(),
custody_bit: true,
}
.tree_hash_root();
let domain = spec.get_domain(
indexed_attestation.data.target.epoch,
Domain::Attestation,
&state.fork,
);
Ok(SignatureSet::dual(
signature,
message_0,
get_pubkeys(state, &indexed_attestation.custody_bit_0_indices)?,
message_1,
get_pubkeys(state, &indexed_attestation.custody_bit_1_indices)?,
domain,
))
}
/// Returns the signature set for the given `attester_slashing` and corresponding `pubkeys`.
pub fn attester_slashing_signature_sets<'a, T: EthSpec>(
state: &'a BeaconState<T>,
attester_slashing: &'a AttesterSlashing<T>,
spec: &'a ChainSpec,
) -> Result<(SignatureSet<'a>, SignatureSet<'a>)> {
Ok((
indexed_attestation_signature_set(
state,
&attester_slashing.attestation_1.signature,
&attester_slashing.attestation_1,
spec,
)?,
indexed_attestation_signature_set(
state,
&attester_slashing.attestation_2.signature,
&attester_slashing.attestation_2,
spec,
)?,
))
}
/// Returns the BLS values in a `Deposit`, if they're all valid. Otherwise, returns `None`.
///
/// This method is separate to `deposit_signature_set` to satisfy lifetime requirements.
pub fn deposit_pubkey_signature_message(
deposit: &Deposit,
) -> Option<(PublicKey, Signature, Vec<u8>)> {
let pubkey = (&deposit.data.pubkey).try_into().ok()?;
let signature = (&deposit.data.signature).try_into().ok()?;
let message = deposit.data.signed_root();
Some((pubkey, signature, message))
}
/// Returns the signature set for some set of deposit signatures, made with
/// `deposit_pubkey_signature_message`.
pub fn deposit_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
pubkey_signature_message: &'a (PublicKey, Signature, Vec<u8>),
spec: &'a ChainSpec,
) -> SignatureSet<'a> {
let (pubkey, signature, message) = pubkey_signature_message;
// Note: Deposits are valid across forks, thus the deposit domain is computed
// with the fork zeroed.
let domain = spec.get_domain(state.current_epoch(), Domain::Deposit, &Fork::default());
SignatureSet::single(signature, pubkey, message.clone(), domain)
}
/// Returns a signature set that is valid if the `VoluntaryExit` was signed by the indicated
/// validator.
pub fn exit_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
exit: &'a VoluntaryExit,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let validator = state
.validators
.get(exit.validator_index as usize)
.ok_or_else(|| Error::ValidatorUnknown(exit.validator_index))?;
let domain = spec.get_domain(exit.epoch, Domain::VoluntaryExit, &state.fork);
let message = exit.signed_root();
Ok(SignatureSet::single(
&exit.signature,
&validator.pubkey,
message,
domain,
))
}
/// Returns a signature set that is valid if the `Transfer` was signed by `transfer.pubkey`.
pub fn transfer_signature_set<'a, T: EthSpec>(
state: &'a BeaconState<T>,
transfer: &'a Transfer,
spec: &'a ChainSpec,
) -> Result<SignatureSet<'a>> {
let domain = spec.get_domain(
transfer.slot.epoch(T::slots_per_epoch()),
Domain::Transfer,
&state.fork,
);
let message = transfer.signed_root();
Ok(SignatureSet::single(
&transfer.signature,
&transfer.pubkey,
message,
domain,
))
}
/// Maps validator indices to public keys.
fn get_pubkeys<'a, 'b, T, I>(
state: &'a BeaconState<T>,
validator_indices: I,
) -> Result<Vec<&'a PublicKey>>
where
I: IntoIterator<Item = &'b u64>,
T: EthSpec,
{
validator_indices
.into_iter()
.map(|&validator_idx| {
state
.validators
.get(validator_idx as usize)
.ok_or_else(|| Error::ValidatorUnknown(validator_idx))
.map(|validator| &validator.pubkey)
})
.collect()
}

65
eth2/state_processing/src/per_block_processing/tests.rs
View File

@ -1,7 +1,7 @@
#![cfg(all(test, not(feature = "fake_crypto")))]
use super::block_processing_builder::BlockProcessingBuilder;
use super::errors::*;
use crate::per_block_processing;
use crate::{per_block_processing, BlockSignatureStrategy};
use tree_hash::SignedRoot;
use types::*;
@ -13,7 +13,13 @@ fn valid_block_ok() {
let builder = get_builder(&spec);
let (block, mut state) = builder.build(None, None, &spec);
let result = per_block_processing(&mut state, &block, &spec);
let result = per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
);
assert_eq!(result, Ok(()));
}
@ -27,13 +33,19 @@ fn invalid_block_header_state_slot() {
state.slot = Slot::new(133713);
block.slot = Slot::new(424242);
let result = per_block_processing(&mut state, &block, &spec);
let result = per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
);
assert_eq!(
result,
Err(BlockProcessingError::Invalid(
BlockInvalid::StateSlotMismatch
))
Err(BlockProcessingError::HeaderInvalid {
reason: HeaderInvalid::StateSlotMismatch
})
);
}
@ -44,16 +56,22 @@ fn invalid_parent_block_root() {
let invalid_parent_root = Hash256::from([0xAA; 32]);
let (block, mut state) = builder.build(None, Some(invalid_parent_root), &spec);
let result = per_block_processing(&mut state, &block, &spec);
let result = per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
);
assert_eq!(
result,
Err(BlockProcessingError::Invalid(
BlockInvalid::ParentBlockRootMismatch {
Err(BlockProcessingError::HeaderInvalid {
reason: HeaderInvalid::ParentBlockRootMismatch {
state: Hash256::from_slice(&state.latest_block_header.signed_root()),
block: block.parent_root
}
))
})
);
}
@ -71,12 +89,20 @@ fn invalid_block_signature() {
block.signature = Signature::new(&message, domain, &keypair.sk);
// process block with invalid block signature
let result = per_block_processing(&mut state, &block, &spec);
let result = per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
);
// should get a BadSignature error
assert_eq!(
result,
Err(BlockProcessingError::Invalid(BlockInvalid::BadSignature))
Err(BlockProcessingError::HeaderInvalid {
reason: HeaderInvalid::ProposalSignatureInvalid
})
);
}
@ -89,15 +115,16 @@ fn invalid_randao_reveal_signature() {
let keypair = Keypair::random();
let (block, mut state) = builder.build(Some(keypair.sk), None, &spec);
let result = per_block_processing(&mut state, &block, &spec);
let result = per_block_processing(
&mut state,
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
&spec,
);
// should get a BadRandaoSignature error
assert_eq!(
result,
Err(BlockProcessingError::Invalid(
BlockInvalid::BadRandaoSignature
))
);
assert_eq!(result, Err(BlockProcessingError::RandaoSignatureInvalid));
}
fn get_builder(spec: &ChainSpec) -> (BlockProcessingBuilder<MainnetEthSpec>) {

32
eth2/state_processing/src/per_block_processing/verify_attestation.rs
View File

@ -1,12 +1,16 @@
use super::errors::{AttestationInvalid as Invalid, AttestationValidationError as Error};
use super::errors::{AttestationInvalid as Invalid, BlockOperationError};
use super::VerifySignatures;
use crate::common::get_indexed_attestation;
use crate::per_block_processing::{
is_valid_indexed_attestation, is_valid_indexed_attestation_without_signature,
};
use crate::per_block_processing::is_valid_indexed_attestation;
use tree_hash::TreeHash;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
fn error(reason: Invalid) -> BlockOperationError<Invalid> {
BlockOperationError::invalid(reason)
}
/// Returns `Ok(())` if the given `attestation` is valid to be included in a block that is applied
/// to `state`. Otherwise, returns a descriptive `Err`.
///
@ -16,9 +20,9 @@ use types::*;
pub fn verify_attestation_for_block_inclusion<T: EthSpec>(
state: &BeaconState<T>,
attestation: &Attestation<T>,
spec: &ChainSpec,
verify_signatures: VerifySignatures,
) -> Result<(), Error> {
spec: &ChainSpec,
) -> Result<()> {
let data = &attestation.data;
// Check attestation slot.
@ -40,7 +44,7 @@ pub fn verify_attestation_for_block_inclusion<T: EthSpec>(
}
);
verify_attestation_for_state(state, attestation, spec, verify_signatures)
verify_attestation_for_state(state, attestation, verify_signatures, spec)
}
/// Returns `Ok(())` if `attestation` is a valid attestation to the chain that precedes the given
@ -53,9 +57,9 @@ pub fn verify_attestation_for_block_inclusion<T: EthSpec>(
pub fn verify_attestation_for_state<T: EthSpec>(
state: &BeaconState<T>,
attestation: &Attestation<T>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
verify_signature: VerifySignatures,
) -> Result<(), Error> {
) -> Result<()> {
let data = &attestation.data;
verify!(
data.crosslink.shard < T::ShardCount::to_u64(),
@ -90,11 +94,7 @@ pub fn verify_attestation_for_state<T: EthSpec>(
// Check signature and bitfields
let indexed_attestation = get_indexed_attestation(state, attestation)?;
if verify_signature == VerifySignatures::True {
is_valid_indexed_attestation(state, &indexed_attestation, spec)?;
} else {
is_valid_indexed_attestation_without_signature(state, &indexed_attestation, spec)?;
}
is_valid_indexed_attestation(state, &indexed_attestation, verify_signatures, spec)?;
Ok(())
}
@ -107,7 +107,7 @@ pub fn verify_attestation_for_state<T: EthSpec>(
fn verify_casper_ffg_vote<'a, T: EthSpec>(
attestation: &Attestation<T>,
state: &'a BeaconState<T>,
) -> Result<&'a Crosslink, Error> {
) -> Result<&'a Crosslink> {
let data = &attestation.data;
if data.target.epoch == state.current_epoch() {
verify!(
@ -130,6 +130,6 @@ fn verify_casper_ffg_vote<'a, T: EthSpec>(
);
Ok(state.get_previous_crosslink(data.crosslink.shard)?)
} else {
invalid!(Invalid::BadTargetEpoch)
return Err(error(Invalid::BadTargetEpoch));
}
}

26
eth2/state_processing/src/per_block_processing/verify_attester_slashing.rs
View File

@ -1,8 +1,15 @@
use super::errors::{AttesterSlashingInvalid as Invalid, AttesterSlashingValidationError as Error};
use super::errors::{AttesterSlashingInvalid as Invalid, BlockOperationError};
use super::is_valid_indexed_attestation::is_valid_indexed_attestation;
use crate::per_block_processing::VerifySignatures;
use std::collections::BTreeSet;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
fn error(reason: Invalid) -> BlockOperationError<Invalid> {
BlockOperationError::invalid(reason)
}
/// Indicates if an `AttesterSlashing` is valid to be included in a block in the current epoch of the given
/// state.
///
@ -13,8 +20,9 @@ pub fn verify_attester_slashing<T: EthSpec>(
state: &BeaconState<T>,
attester_slashing: &AttesterSlashing<T>,
should_verify_indexed_attestations: bool,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<()> {
let attestation_1 = &attester_slashing.attestation_1;
let attestation_2 = &attester_slashing.attestation_2;
@ -26,10 +34,10 @@ pub fn verify_attester_slashing<T: EthSpec>(
);
if should_verify_indexed_attestations {
is_valid_indexed_attestation(state, &attestation_1, spec)
.map_err(|e| Error::Invalid(Invalid::IndexedAttestation1Invalid(e.into())))?;
is_valid_indexed_attestation(state, &attestation_2, spec)
.map_err(|e| Error::Invalid(Invalid::IndexedAttestation2Invalid(e.into())))?;
is_valid_indexed_attestation(state, &attestation_1, verify_signatures, spec)
.map_err(|e| error(Invalid::IndexedAttestation1Invalid(e)))?;
is_valid_indexed_attestation(state, &attestation_2, verify_signatures, spec)
.map_err(|e| error(Invalid::IndexedAttestation2Invalid(e)))?;
}
Ok(())
@ -43,7 +51,7 @@ pub fn verify_attester_slashing<T: EthSpec>(
pub fn get_slashable_indices<T: EthSpec>(
state: &BeaconState<T>,
attester_slashing: &AttesterSlashing<T>,
) -> Result<Vec<u64>, Error> {
) -> Result<Vec<u64>> {
get_slashable_indices_modular(state, attester_slashing, |_, validator| {
validator.is_slashable_at(state.current_epoch())
})
@ -55,7 +63,7 @@ pub fn get_slashable_indices_modular<F, T: EthSpec>(
state: &BeaconState<T>,
attester_slashing: &AttesterSlashing<T>,
is_slashable: F,
) -> Result<Vec<u64>, Error>
) -> Result<Vec<u64>>
where
F: Fn(u64, &Validator) -> bool,
{
@ -81,7 +89,7 @@ where
let validator = state
.validators
.get(index as usize)
.ok_or_else(|| Error::Invalid(Invalid::UnknownValidator(index)))?;
.ok_or_else(|| error(Invalid::UnknownValidator(index)))?;
if is_slashable(index, validator) {
slashable_indices.push(index);

35
eth2/state_processing/src/per_block_processing/verify_deposit.rs
View File

@ -1,9 +1,17 @@
use super::errors::{DepositInvalid as Invalid, DepositValidationError as Error};
use super::errors::{BlockOperationError, DepositInvalid};
use crate::per_block_processing::signature_sets::{
deposit_pubkey_signature_message, deposit_signature_set,
};
use merkle_proof::verify_merkle_proof;
use std::convert::TryInto;
use tree_hash::{SignedRoot, TreeHash};
use tree_hash::TreeHash;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<DepositInvalid>>;
fn error(reason: DepositInvalid) -> BlockOperationError<DepositInvalid> {
BlockOperationError::invalid(reason)
}
/// Verify `Deposit.pubkey` signed `Deposit.signature`.
///
/// Spec v0.8.0
@ -11,18 +19,13 @@ pub fn verify_deposit_signature<T: EthSpec>(
state: &BeaconState<T>,
deposit: &Deposit,
spec: &ChainSpec,
pubkey: &PublicKey,
) -> Result<(), Error> {
// Note: Deposits are valid across forks, thus the deposit domain is computed
// with the fork zeroed.
let domain = spec.get_domain(state.current_epoch(), Domain::Deposit, &Fork::default());
let signature: Signature = (&deposit.data.signature)
.try_into()
.map_err(|_| Error::Invalid(Invalid::BadSignatureBytes))?;
) -> Result<()> {
let deposit_signature_message = deposit_pubkey_signature_message(deposit)
.ok_or_else(|| error(DepositInvalid::BadBlsBytes))?;
verify!(
signature.verify(&deposit.data.signed_root(), domain, pubkey),
Invalid::BadSignature
deposit_signature_set(state, &deposit_signature_message, spec).is_valid(),
DepositInvalid::BadSignature
);
Ok(())
@ -37,7 +40,7 @@ pub fn verify_deposit_signature<T: EthSpec>(
pub fn get_existing_validator_index<T: EthSpec>(
state: &BeaconState<T>,
pub_key: &PublicKey,
) -> Result<Option<u64>, Error> {
) -> Result<Option<u64>> {
let validator_index = state.get_validator_index(pub_key)?;
Ok(validator_index.map(|idx| idx as u64))
}
@ -53,7 +56,7 @@ pub fn verify_deposit_merkle_proof<T: EthSpec>(
deposit: &Deposit,
deposit_index: u64,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<()> {
let leaf = deposit.data.tree_hash_root();
verify!(
@ -64,7 +67,7 @@ pub fn verify_deposit_merkle_proof<T: EthSpec>(
deposit_index as usize,
state.eth1_data.deposit_root,
),
Invalid::BadMerkleProof
DepositInvalid::BadMerkleProof
);
Ok(())

47
eth2/state_processing/src/per_block_processing/verify_exit.rs
View File

@ -1,7 +1,13 @@
use super::errors::{ExitInvalid as Invalid, ExitValidationError as Error};
use tree_hash::SignedRoot;
use super::errors::{BlockOperationError, ExitInvalid};
use crate::per_block_processing::{signature_sets::exit_signature_set, VerifySignatures};
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<ExitInvalid>>;
fn error(reason: ExitInvalid) -> BlockOperationError<ExitInvalid> {
BlockOperationError::invalid(reason)
}
/// Indicates if an `Exit` is valid to be included in a block in the current epoch of the given
/// state.
///
@ -11,9 +17,10 @@ use types::*;
pub fn verify_exit<T: EthSpec>(
state: &BeaconState<T>,
exit: &VoluntaryExit,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
verify_exit_parametric(state, exit, spec, false)
) -> Result<()> {
verify_exit_parametric(state, exit, verify_signatures, spec, false)
}
/// Like `verify_exit` but doesn't run checks which may become true in future states.
@ -22,9 +29,10 @@ pub fn verify_exit<T: EthSpec>(
pub fn verify_exit_time_independent_only<T: EthSpec>(
state: &BeaconState<T>,
exit: &VoluntaryExit,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
verify_exit_parametric(state, exit, spec, true)
) -> Result<()> {
verify_exit_parametric(state, exit, verify_signatures, spec, true)
}
/// Parametric version of `verify_exit` that skips some checks if `time_independent_only` is true.
@ -33,30 +41,31 @@ pub fn verify_exit_time_independent_only<T: EthSpec>(
fn verify_exit_parametric<T: EthSpec>(
state: &BeaconState<T>,
exit: &VoluntaryExit,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
time_independent_only: bool,
) -> Result<(), Error> {
) -> Result<()> {
let validator = state
.validators
.get(exit.validator_index as usize)
.ok_or_else(|| Error::Invalid(Invalid::ValidatorUnknown(exit.validator_index)))?;
.ok_or_else(|| error(ExitInvalid::ValidatorUnknown(exit.validator_index)))?;
// Verify the validator is active.
verify!(
validator.is_active_at(state.current_epoch()),
Invalid::NotActive(exit.validator_index)
ExitInvalid::NotActive(exit.validator_index)
);
// Verify that the validator has not yet exited.
verify!(
validator.exit_epoch == spec.far_future_epoch,
Invalid::AlreadyExited(exit.validator_index)
ExitInvalid::AlreadyExited(exit.validator_index)
);
// Exits must specify an epoch when they become valid; they are not valid before then.
verify!(
time_independent_only || state.current_epoch() >= exit.epoch,
Invalid::FutureEpoch {
ExitInvalid::FutureEpoch {
state: state.current_epoch(),
exit: exit.epoch
}
@ -65,20 +74,18 @@ fn verify_exit_parametric<T: EthSpec>(
// Verify the validator has been active long enough.
verify!(
state.current_epoch() >= validator.activation_epoch + spec.persistent_committee_period,
Invalid::TooYoungToExit {
ExitInvalid::TooYoungToExit {
current_epoch: state.current_epoch(),
earliest_exit_epoch: validator.activation_epoch + spec.persistent_committee_period,
}
);
// Verify signature.
let message = exit.signed_root();
let domain = spec.get_domain(exit.epoch, Domain::VoluntaryExit, &state.fork);
verify!(
exit.signature
.verify(&message[..], domain, &validator.pubkey),
Invalid::BadSignature
);
if verify_signatures.is_true() {
verify!(
exit_signature_set(state, exit, spec)?.is_valid(),
ExitInvalid::BadSignature
);
}
Ok(())
}

62
eth2/state_processing/src/per_block_processing/verify_proposer_slashing.rs
View File

@ -1,7 +1,14 @@
use super::errors::{ProposerSlashingInvalid as Invalid, ProposerSlashingValidationError as Error};
use tree_hash::SignedRoot;
use super::errors::{BlockOperationError, ProposerSlashingInvalid as Invalid};
use super::signature_sets::proposer_slashing_signature_set;
use crate::VerifySignatures;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
fn error(reason: Invalid) -> BlockOperationError<Invalid> {
BlockOperationError::invalid(reason)
}
/// Indicates if a `ProposerSlashing` is valid to be included in a block in the current epoch of the given
/// state.
///
@ -11,14 +18,13 @@ use types::*;
pub fn verify_proposer_slashing<T: EthSpec>(
proposer_slashing: &ProposerSlashing,
state: &BeaconState<T>,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<()> {
let proposer = state
.validators
.get(proposer_slashing.proposer_index as usize)
.ok_or_else(|| {
Error::Invalid(Invalid::ProposerUnknown(proposer_slashing.proposer_index))
})?;
.ok_or_else(|| error(Invalid::ProposerUnknown(proposer_slashing.proposer_index)))?;
// Verify that the epoch is the same
verify!(
@ -42,44 +48,12 @@ pub fn verify_proposer_slashing<T: EthSpec>(
Invalid::ProposerNotSlashable(proposer_slashing.proposer_index)
);
verify!(
verify_header_signature::<T>(
&proposer_slashing.header_1,
&proposer.pubkey,
&state.fork,
spec
),
Invalid::BadProposal1Signature
);
verify!(
verify_header_signature::<T>(
&proposer_slashing.header_2,
&proposer.pubkey,
&state.fork,
spec
),
Invalid::BadProposal2Signature
);
if verify_signatures.is_true() {
let (signature_set_1, signature_set_2) =
proposer_slashing_signature_set(state, proposer_slashing, spec)?;
verify!(signature_set_1.is_valid(), Invalid::BadProposal1Signature);
verify!(signature_set_2.is_valid(), Invalid::BadProposal2Signature);
}
Ok(())
}
/// Verifies the signature of a proposal.
///
/// Returns `true` if the signature is valid.
///
/// Spec v0.8.0
fn verify_header_signature<T: EthSpec>(
header: &BeaconBlockHeader,
pubkey: &PublicKey,
fork: &Fork,
spec: &ChainSpec,
) -> bool {
let message = header.signed_root();
let domain = spec.get_domain(
header.slot.epoch(T::slots_per_epoch()),
Domain::BeaconProposer,
fork,
);
header.signature.verify(&message[..], domain, pubkey)
}

65
eth2/state_processing/src/per_block_processing/verify_transfer.rs
View File

@ -1,8 +1,15 @@
use super::errors::{TransferInvalid as Invalid, TransferValidationError as Error};
use super::errors::{BlockOperationError, TransferInvalid as Invalid};
use crate::per_block_processing::signature_sets::transfer_signature_set;
use crate::per_block_processing::VerifySignatures;
use bls::get_withdrawal_credentials;
use tree_hash::SignedRoot;
use types::*;
type Result<T> = std::result::Result<T, BlockOperationError<Invalid>>;
fn error(reason: Invalid) -> BlockOperationError<Invalid> {
BlockOperationError::invalid(reason)
}
/// Indicates if a `Transfer` is valid to be included in a block in the current epoch of the given
/// state.
///
@ -12,9 +19,10 @@ use types::*;
pub fn verify_transfer<T: EthSpec>(
state: &BeaconState<T>,
transfer: &Transfer,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
verify_transfer_parametric(state, transfer, spec, false)
) -> Result<()> {
verify_transfer_parametric(state, transfer, verify_signatures, spec, false)
}
/// Like `verify_transfer` but doesn't run checks which may become true in future states.
@ -23,9 +31,10 @@ pub fn verify_transfer<T: EthSpec>(
pub fn verify_transfer_time_independent_only<T: EthSpec>(
state: &BeaconState<T>,
transfer: &Transfer,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
) -> Result<(), Error> {
verify_transfer_parametric(state, transfer, spec, true)
) -> Result<()> {
verify_transfer_parametric(state, transfer, verify_signatures, spec, true)
}
/// Parametric version of `verify_transfer` that allows some checks to be skipped.
@ -41,24 +50,25 @@ pub fn verify_transfer_time_independent_only<T: EthSpec>(
fn verify_transfer_parametric<T: EthSpec>(
state: &BeaconState<T>,
transfer: &Transfer,
verify_signatures: VerifySignatures,
spec: &ChainSpec,
time_independent_only: bool,
) -> Result<(), Error> {
) -> Result<()> {
let sender_balance = *state
.balances
.get(transfer.sender as usize)
.ok_or_else(|| Error::Invalid(Invalid::FromValidatorUnknown(transfer.sender)))?;
.ok_or_else(|| error(Invalid::FromValidatorUnknown(transfer.sender)))?;
let recipient_balance = *state
.balances
.get(transfer.recipient as usize)
.ok_or_else(|| Error::Invalid(Invalid::FromValidatorUnknown(transfer.recipient)))?;
.ok_or_else(|| error(Invalid::FromValidatorUnknown(transfer.recipient)))?;
// Safely determine `amount + fee`.
let total_amount = transfer
.amount
.checked_add(transfer.fee)
.ok_or_else(|| Error::Invalid(Invalid::FeeOverflow(transfer.amount, transfer.fee)))?;
.ok_or_else(|| error(Invalid::FeeOverflow(transfer.amount, transfer.fee)))?;
// Verify the sender has adequate balance.
verify!(
@ -99,7 +109,7 @@ fn verify_transfer_parametric<T: EthSpec>(
let sender_validator = state
.validators
.get(transfer.sender as usize)
.ok_or_else(|| Error::Invalid(Invalid::FromValidatorUnknown(transfer.sender)))?;
.ok_or_else(|| error(Invalid::FromValidatorUnknown(transfer.sender)))?;
// Ensure one of the following is met:
//
@ -131,19 +141,12 @@ fn verify_transfer_parametric<T: EthSpec>(
)
);
// Verify the transfer signature.
let message = transfer.signed_root();
let domain = spec.get_domain(
transfer.slot.epoch(T::slots_per_epoch()),
Domain::Transfer,
&state.fork,
);
verify!(
transfer
.signature
.verify(&message[..], domain, &transfer.pubkey),
Invalid::BadSignature
);
if verify_signatures.is_true() {
verify!(
transfer_signature_set(state, transfer, spec)?.is_valid(),
Invalid::BadSignature
);
}
Ok(())
}
@ -157,15 +160,15 @@ pub fn execute_transfer<T: EthSpec>(
state: &mut BeaconState<T>,
transfer: &Transfer,
spec: &ChainSpec,
) -> Result<(), Error> {
) -> Result<()> {
let sender_balance = *state
.balances
.get(transfer.sender as usize)
.ok_or_else(|| Error::Invalid(Invalid::FromValidatorUnknown(transfer.sender)))?;
.ok_or_else(|| error(Invalid::FromValidatorUnknown(transfer.sender)))?;
let recipient_balance = *state
.balances
.get(transfer.recipient as usize)
.ok_or_else(|| Error::Invalid(Invalid::ToValidatorUnknown(transfer.recipient)))?;
.ok_or_else(|| error(Invalid::ToValidatorUnknown(transfer.recipient)))?;
let proposer_index =
state.get_beacon_proposer_index(state.slot, RelativeEpoch::Current, spec)?;
@ -174,11 +177,11 @@ pub fn execute_transfer<T: EthSpec>(
let total_amount = transfer
.amount
.checked_add(transfer.fee)
.ok_or_else(|| Error::Invalid(Invalid::FeeOverflow(transfer.amount, transfer.fee)))?;
.ok_or_else(|| error(Invalid::FeeOverflow(transfer.amount, transfer.fee)))?;
state.balances[transfer.sender as usize] =
sender_balance.checked_sub(total_amount).ok_or_else(|| {
Error::Invalid(Invalid::FromBalanceInsufficient(
error(Invalid::FromBalanceInsufficient(
total_amount,
sender_balance,
))
@ -187,7 +190,7 @@ pub fn execute_transfer<T: EthSpec>(
state.balances[transfer.recipient as usize] = recipient_balance
.checked_add(transfer.amount)
.ok_or_else(|| {
Error::Invalid(Invalid::ToBalanceOverflow(
error(Invalid::ToBalanceOverflow(
recipient_balance,
transfer.amount,
))
@ -195,7 +198,7 @@ pub fn execute_transfer<T: EthSpec>(
state.balances[proposer_index] =
proposer_balance.checked_add(transfer.fee).ok_or_else(|| {
Error::Invalid(Invalid::ProposerBalanceOverflow(
error(Invalid::ProposerBalanceOverflow(
proposer_balance,
transfer.fee,
))

182
eth2/state_processing/src/test_utils.rs Normal file
View File

@ -0,0 +1,182 @@
use log::info;
use types::test_utils::{TestingBeaconBlockBuilder, TestingBeaconStateBuilder};
use types::{EthSpec, *};
pub struct BlockBuilder<T: EthSpec> {
pub state_builder: TestingBeaconStateBuilder<T>,
pub block_builder: TestingBeaconBlockBuilder<T>,
pub num_validators: usize,
pub num_proposer_slashings: usize,
pub num_attester_slashings: usize,
pub num_attestations: usize,
pub num_deposits: usize,
pub num_exits: usize,
pub num_transfers: usize,
}
impl<T: EthSpec> BlockBuilder<T> {
pub fn new(num_validators: usize, spec: &ChainSpec) -> Self {
let state_builder =
TestingBeaconStateBuilder::from_default_keypairs_file_if_exists(num_validators, &spec);
let block_builder = TestingBeaconBlockBuilder::new(spec);
Self {
state_builder,
block_builder,
num_validators: 0,
num_proposer_slashings: 0,
num_attester_slashings: 0,
num_attestations: 0,
num_deposits: 0,
num_exits: 0,
num_transfers: 0,
}
}
pub fn maximize_block_operations(&mut self) {
self.num_proposer_slashings = T::MaxProposerSlashings::to_usize();
self.num_attester_slashings = T::MaxAttesterSlashings::to_usize();
self.num_attestations = T::MaxAttestations::to_usize();
self.num_deposits = T::MaxDeposits::to_usize();
self.num_exits = T::MaxVoluntaryExits::to_usize();
self.num_transfers = T::MaxTransfers::to_usize();
}
pub fn set_slot(&mut self, slot: Slot) {
self.state_builder.teleport_to_slot(slot);
}
pub fn build_caches(&mut self, spec: &ChainSpec) {
// Builds all caches; benches will not contain shuffling/committee building times.
self.state_builder.build_caches(&spec).unwrap();
}
pub fn build(mut self, spec: &ChainSpec) -> (BeaconBlock<T>, BeaconState<T>) {
let (mut state, keypairs) = self.state_builder.build();
let builder = &mut self.block_builder;
builder.set_slot(state.slot);
let proposer_index = state
.get_beacon_proposer_index(state.slot, RelativeEpoch::Current, spec)
.unwrap();
let proposer_keypair = &keypairs[proposer_index];
builder.set_randao_reveal(&proposer_keypair.sk, &state.fork, spec);
let parent_root = state.latest_block_header.canonical_root();
builder.set_parent_root(parent_root);
// Used as a stream of validator indices for use in slashings, exits, etc.
let mut validators_iter = (0..keypairs.len() as u64).into_iter();
// Insert `ProposerSlashing` objects.
for _ in 0..self.num_proposer_slashings {
let validator_index = validators_iter.next().expect("Insufficient validators.");
builder.insert_proposer_slashing(
validator_index,
&keypairs[validator_index as usize].sk,
&state.fork,
spec,
);
}
info!(
"Inserted {} proposer slashings.",
builder.block.body.proposer_slashings.len()
);
// Insert `AttesterSlashing` objects
for _ in 0..self.num_attester_slashings {
let mut attesters: Vec<u64> = vec![];
let mut secret_keys: Vec<&SecretKey> = vec![];
const NUM_SLASHED_INDICES: usize = 12;
for _ in 0..NUM_SLASHED_INDICES {
let validator_index = validators_iter.next().expect("Insufficient validators.");
attesters.push(validator_index);
secret_keys.push(&keypairs[validator_index as usize].sk);
}
builder.insert_attester_slashing(&attesters, &secret_keys, &state.fork, spec);
}
info!(
"Inserted {} attester slashings.",
builder.block.body.attester_slashings.len()
);
// Insert `Attestation` objects.
let all_secret_keys: Vec<&SecretKey> = keypairs.iter().map(|keypair| &keypair.sk).collect();
builder
.insert_attestations(
&state,
&all_secret_keys,
self.num_attestations as usize,
spec,
)
.unwrap();
info!(
"Inserted {} attestations.",
builder.block.body.attestations.len()
);
// Insert `Deposit` objects.
for i in 0..self.num_deposits {
builder.insert_deposit(
32_000_000_000,
state.eth1_data.deposit_count + (i as u64),
&state,
spec,
);
}
state.eth1_data.deposit_count += self.num_deposits as u64;
info!("Inserted {} deposits.", builder.block.body.deposits.len());
// Insert the maximum possible number of `Exit` objects.
for _ in 0..self.num_exits {
let validator_index = validators_iter.next().expect("Insufficient validators.");
builder.insert_exit(
&state,
validator_index,
&keypairs[validator_index as usize].sk,
spec,
);
}
info!(
"Inserted {} exits.",
builder.block.body.voluntary_exits.len()
);
// Insert the maximum possible number of `Transfer` objects.
for _ in 0..self.num_transfers {
let validator_index = validators_iter.next().expect("Insufficient validators.");
// Manually set the validator to be withdrawn.
state.validators[validator_index as usize].withdrawable_epoch = state.previous_epoch();
builder.insert_transfer(
&state,
validator_index,
validator_index,
1,
keypairs[validator_index as usize].clone(),
spec,
);
}
info!("Inserted {} transfers.", builder.block.body.transfers.len());
// Set the eth1 data to be different from the state.
self.block_builder.block.body.eth1_data.block_hash = Hash256::from_slice(&vec![42; 32]);
let block = self
.block_builder
.build(&proposer_keypair.sk, &state.fork, spec);
(block, state)
}
}

208
eth2/state_processing/tests/tests.rs Normal file
View File

@ -0,0 +1,208 @@
use state_processing::{
per_block_processing, test_utils::BlockBuilder, BlockProcessingError, BlockSignatureStrategy,
};
use types::{
AggregateSignature, BeaconBlock, BeaconState, ChainSpec, EthSpec, Keypair, MinimalEthSpec,
Signature, Slot,
};
const VALIDATOR_COUNT: usize = 64;
fn get_block<T, F>(mut mutate_builder: F) -> (BeaconBlock<T>, BeaconState<T>)
where
T: EthSpec,
F: FnMut(&mut BlockBuilder<T>),
{
let spec = T::default_spec();
let mut builder: BlockBuilder<T> = BlockBuilder::new(VALIDATOR_COUNT, &spec);
builder.set_slot(Slot::from(T::slots_per_epoch() * 3 - 2));
builder.build_caches(&spec);
mutate_builder(&mut builder);
builder.build(&spec)
}
fn test_scenario<T: EthSpec, F, G>(mutate_builder: F, mut invalidate_block: G, spec: &ChainSpec)
where
T: EthSpec,
F: FnMut(&mut BlockBuilder<T>),
G: FnMut(&mut BeaconBlock<T>),
{
let (mut block, state) = get_block::<T, _>(mutate_builder);
/*
* Control check to ensure the valid block should pass verification.
*/
assert_eq!(
per_block_processing(
&mut state.clone(),
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
spec
),
Ok(()),
"valid block should pass with verify individual"
);
assert_eq!(
per_block_processing(
&mut state.clone(),
&block,
None,
BlockSignatureStrategy::VerifyBulk,
spec
),
Ok(()),
"valid block should pass with verify bulk"
);
invalidate_block(&mut block);
/*
* Check to ensure the invalid block fails.
*/
assert!(
per_block_processing(
&mut state.clone(),
&block,
None,
BlockSignatureStrategy::VerifyIndividual,
spec
)
.is_err(),
"invalid block should fail with verify individual"
);
assert_eq!(
per_block_processing(
&mut state.clone(),
&block,
None,
BlockSignatureStrategy::VerifyBulk,
spec
),
Err(BlockProcessingError::BulkSignatureVerificationFailed),
"invalid block should fail with verify bulk"
);
}
// TODO: use lazy static
fn agg_sig() -> AggregateSignature {
let mut agg_sig = AggregateSignature::new();
agg_sig.add(&sig());
agg_sig
}
// TODO: use lazy static
fn sig() -> Signature {
let keypair = Keypair::random();
Signature::new(&[42, 42], 12, &keypair.sk)
}
type TestEthSpec = MinimalEthSpec;
mod signatures_minimal {
use super::*;
#[test]
fn block_proposal() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(|_| {}, |block| block.signature = sig(), spec);
}
#[test]
fn randao() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(|_| {}, |block| block.body.randao_reveal = sig(), spec);
}
#[test]
fn proposer_slashing() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_proposer_slashings = 1;
},
|block| block.body.proposer_slashings[0].header_1.signature = sig(),
spec,
);
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_proposer_slashings = 1;
},
|block| block.body.proposer_slashings[0].header_2.signature = sig(),
spec,
);
}
#[test]
fn attester_slashing() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_attester_slashings = 1;
},
|block| block.body.attester_slashings[0].attestation_1.signature = agg_sig(),
spec,
);
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_attester_slashings = 1;
},
|block| block.body.attester_slashings[0].attestation_2.signature = agg_sig(),
spec,
);
}
#[test]
fn attestation() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_attestations = 1;
},
|block| block.body.attestations[0].signature = agg_sig(),
spec,
);
}
#[test]
// TODO: fix fail by making valid merkle proofs.
#[should_panic]
fn deposit() {
let spec = &TestEthSpec::default_spec();
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_deposits = 1;
},
|block| block.body.deposits[0].data.signature = sig().into(),
spec,
);
}
#[test]
fn exit() {
let mut spec = &mut TestEthSpec::default_spec();
// Allows the test to pass.
spec.persistent_committee_period = 0;
test_scenario::<TestEthSpec, _, _>(
|mut builder| {
builder.num_exits = 1;
},
|block| block.body.voluntary_exits[0].signature = sig(),
spec,
);
}
// Cannot test transfers because their length is zero.
}

4
eth2/types/src/beacon_state.rs
View File

@ -406,6 +406,10 @@ impl<T: EthSpec> BeaconState<T> {
.ok_or_else(|| Error::SlotOutOfBounds)?;
let seed = self.get_seed(epoch, spec)?;
if first_committee.is_empty() {
return Err(Error::InsufficientValidators);
}
let mut i = 0;
Ok(loop {
let candidate_index = first_committee[(epoch.as_usize() + i) % first_committee.len()];

4
eth2/types/src/test_utils/builders/testing_beacon_block_builder.rs
View File

@ -119,6 +119,10 @@ impl<T: EthSpec> TestingBeaconBlockBuilder<T> {
// - The shard of the committee.
let mut committees: Vec<(Slot, Vec<usize>, Vec<usize>, u64)> = vec![];
if slot < T::slots_per_epoch() {
panic!("slot is too low, will get stuck in loop")
}
// Loop backwards through slots gathering each committee, until:
//
// - The slot is too old to be included in a block at this slot.

3
eth2/utils/bls/Cargo.toml
View File

@ -5,7 +5,8 @@ authors = ["Paul Hauner <paul@paulhauner.com>"]
edition = "2018"
[dependencies]
milagro_bls = { git = "https://github.com/michaelsproul/milagro_bls", branch = "little-endian" }
# FIXME: update sigp repo
milagro_bls = { git = "https://github.com/michaelsproul/milagro_bls", branch = "little-endian-v0.10" }
eth2_hashing = { path = "../eth2_hashing" }
hex = "0.3"
rand = "^0.5"

18
eth2/utils/bls/src/aggregate_public_key.rs
View File

@ -1,5 +1,5 @@
use super::PublicKey;
use milagro_bls::AggregatePublicKey as RawAggregatePublicKey;
use milagro_bls::{AggregatePublicKey as RawAggregatePublicKey, G1Point};
/// A BLS aggregate public key.
///
@ -13,15 +13,31 @@ impl AggregatePublicKey {
AggregatePublicKey(RawAggregatePublicKey::new())
}
pub fn add_without_affine(&mut self, public_key: &PublicKey) {
self.0.point.add(&public_key.as_raw().point)
}
pub fn affine(&mut self) {
self.0.point.affine()
}
pub fn add(&mut self, public_key: &PublicKey) {
self.0.add(public_key.as_raw())
}
pub fn add_point(&mut self, point: &G1Point) {
self.0.point.add(point)
}
/// Returns the underlying public key.
pub fn as_raw(&self) -> &RawAggregatePublicKey {
&self.0
}
pub fn into_raw(self) -> RawAggregatePublicKey {
self.0
}
/// Return a hex string representation of this key's bytes.
#[cfg(test)]
pub fn as_hex_string(&self) -> String {

20
eth2/utils/bls/src/aggregate_signature.rs
View File

@ -1,6 +1,7 @@
use super::*;
use milagro_bls::{
AggregatePublicKey as RawAggregatePublicKey, AggregateSignature as RawAggregateSignature,
G2Point,
};
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
@ -76,13 +77,13 @@ impl AggregateSignature {
aggregate_public_keys.iter().map(|pk| pk.as_raw()).collect();
// Messages are concatenated into one long message.
let mut msg: Vec<u8> = vec![];
let mut msgs: Vec<Vec<u8>> = vec![];
for message in messages {
msg.extend_from_slice(message);
msgs.push(message.to_vec());
}
self.aggregate_signature
.verify_multiple(&msg[..], domain, &aggregate_public_keys[..])
.verify_multiple(&msgs, domain, &aggregate_public_keys[..])
}
/// Return AggregateSignature as bytes
@ -112,6 +113,19 @@ impl AggregateSignature {
Ok(Self::empty_signature())
}
/// Returns the underlying signature.
pub fn as_raw(&self) -> &RawAggregateSignature {
&self.aggregate_signature
}
/// Returns the underlying signature.
pub fn from_point(point: G2Point) -> Self {
Self {
aggregate_signature: RawAggregateSignature { point },
is_empty: false,
}
}
/// Returns if the AggregateSignature `is_empty`
pub fn is_empty(&self) -> bool {
self.is_empty

22
eth2/utils/bls/src/fake_aggregate_public_key.rs
View File

@ -1,4 +1,5 @@
use super::{PublicKey, BLS_PUBLIC_KEY_BYTE_SIZE};
use milagro_bls::G1Point;
/// A BLS aggregate public key.
///
@ -7,6 +8,8 @@ use super::{PublicKey, BLS_PUBLIC_KEY_BYTE_SIZE};
#[derive(Debug, Clone, Default)]
pub struct FakeAggregatePublicKey {
bytes: Vec<u8>,
/// Never used, only use for compatibility with "real" `AggregatePublicKey`.
pub point: G1Point,
}
impl FakeAggregatePublicKey {
@ -14,10 +17,19 @@ impl FakeAggregatePublicKey {
Self::zero()
}
pub fn add_without_affine(&mut self, _public_key: &PublicKey) {
// No nothing.
}
pub fn affine(&mut self) {
// No nothing.
}
/// Creates a new all-zero's aggregate public key
pub fn zero() -> Self {
Self {
bytes: vec![0; BLS_PUBLIC_KEY_BYTE_SIZE],
point: G1Point::new(),
}
}
@ -25,10 +37,18 @@ impl FakeAggregatePublicKey {
// No nothing.
}
pub fn as_raw(&self) -> &FakeAggregatePublicKey {
pub fn add_point(&mut self, _point: &G1Point) {
// No nothing.
}
pub fn as_raw(&self) -> &Self {
&self
}
pub fn into_raw(self) -> Self {
self
}
pub fn as_bytes(&self) -> Vec<u8> {
self.bytes.clone()
}

9
eth2/utils/bls/src/fake_aggregate_signature.rs
View File

@ -2,6 +2,7 @@ use super::{
fake_aggregate_public_key::FakeAggregatePublicKey, fake_signature::FakeSignature,
BLS_AGG_SIG_BYTE_SIZE,
};
use milagro_bls::G2Point;
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use serde_hex::{encode as hex_encode, PrefixedHexVisitor};
@ -14,6 +15,8 @@ use ssz::{ssz_encode, Decode, DecodeError, Encode};
#[derive(Debug, PartialEq, Clone, Default, Eq)]
pub struct FakeAggregateSignature {
bytes: Vec<u8>,
/// Never used, only use for compatibility with "real" `AggregateSignature`.
pub point: G2Point,
}
impl FakeAggregateSignature {
@ -26,9 +29,14 @@ impl FakeAggregateSignature {
pub fn zero() -> Self {
Self {
bytes: vec![0; BLS_AGG_SIG_BYTE_SIZE],
point: G2Point::new(),
}
}
pub fn as_raw(&self) -> &Self {
&self
}
/// Does glorious nothing.
pub fn add(&mut self, _signature: &FakeSignature) {
// Do nothing.
@ -69,6 +77,7 @@ impl FakeAggregateSignature {
} else {
Ok(Self {
bytes: bytes.to_vec(),
point: G2Point::new(),
})
}
}

12
eth2/utils/bls/src/fake_public_key.rs
View File

@ -1,4 +1,5 @@
use super::{SecretKey, BLS_PUBLIC_KEY_BYTE_SIZE};
use milagro_bls::G1Point;
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use serde_hex::{encode as hex_encode, HexVisitor};
@ -14,6 +15,8 @@ use std::hash::{Hash, Hasher};
#[derive(Debug, Clone, Eq)]
pub struct FakePublicKey {
bytes: Vec<u8>,
/// Never used, only use for compatibility with "real" `PublicKey`.
pub point: G1Point,
}
impl FakePublicKey {
@ -25,6 +28,7 @@ impl FakePublicKey {
pub fn zero() -> Self {
Self {
bytes: vec![0; BLS_PUBLIC_KEY_BYTE_SIZE],
point: G1Point::new(),
}
}
@ -39,6 +43,7 @@ impl FakePublicKey {
pub fn from_bytes(bytes: &[u8]) -> Result<Self, DecodeError> {
Ok(Self {
bytes: bytes.to_vec(),
point: G1Point::new(),
})
}
@ -61,6 +66,13 @@ impl FakePublicKey {
hex_encode(end_bytes)
}
/// Returns the point as a hex string of the SSZ encoding.
///
/// Note: the string is prefixed with `0x`.
pub fn as_hex_string(&self) -> String {
hex_encode(self.as_ssz_bytes())
}
// Returns itself
pub fn as_raw(&self) -> &Self {
self

9
eth2/utils/bls/src/fake_signature.rs
View File

@ -1,5 +1,6 @@
use super::{PublicKey, SecretKey, BLS_SIG_BYTE_SIZE};
use hex::encode as hex_encode;
use milagro_bls::G2Point;
use serde::de::{Deserialize, Deserializer};
use serde::ser::{Serialize, Serializer};
use serde_hex::HexVisitor;
@ -13,6 +14,8 @@ use ssz::{ssz_encode, Decode, DecodeError, Encode};
pub struct FakeSignature {
bytes: Vec<u8>,
is_empty: bool,
/// Never used, only use for compatibility with "real" `Signature`.
pub point: G2Point,
}
impl FakeSignature {
@ -26,6 +29,7 @@ impl FakeSignature {
Self {
bytes: vec![0; BLS_SIG_BYTE_SIZE],
is_empty: true,
point: G2Point::new(),
}
}
@ -39,6 +43,10 @@ impl FakeSignature {
true
}
pub fn as_raw(&self) -> &Self {
&self
}
/// _Always_ returns true.
pub fn verify_hashed(
&self,
@ -61,6 +69,7 @@ impl FakeSignature {
Ok(Self {
bytes: bytes.to_vec(),
is_empty,
point: G2Point::new(),
})
}
}

4
eth2/utils/bls/src/lib.rs
View File

@ -7,12 +7,14 @@ mod keypair;
mod public_key_bytes;
mod secret_key;
mod signature_bytes;
mod signature_set;
pub use crate::keypair::Keypair;
pub use crate::public_key_bytes::PublicKeyBytes;
pub use crate::secret_key::SecretKey;
pub use crate::signature_bytes::SignatureBytes;
pub use milagro_bls::{compress_g2, hash_on_g2};
pub use milagro_bls::{compress_g2, hash_on_g2, G1Point};
pub use signature_set::{verify_signature_sets, SignatureSet, SignedMessage};
#[cfg(feature = "fake_crypto")]
mod fake_aggregate_public_key;

2
eth2/utils/bls/src/public_key.rs
View File

@ -28,7 +28,7 @@ impl PublicKey {
/// Returns the underlying point as compressed bytes.
///
/// Identical to `self.as_uncompressed_bytes()`.
fn as_bytes(&self) -> Vec<u8> {
pub fn as_bytes(&self) -> Vec<u8> {
self.as_raw().as_bytes()
}

193
eth2/utils/bls/src/signature_set.rs Normal file
View File

@ -0,0 +1,193 @@
use crate::{AggregatePublicKey, AggregateSignature, PublicKey, Signature};
use milagro_bls::{G1Point, G2Point};
#[cfg(not(feature = "fake_crypto"))]
use milagro_bls::AggregateSignature as RawAggregateSignature;
type Message = Vec<u8>;
type Domain = u64;
#[derive(Clone)]
pub struct SignedMessage<'a> {
signing_keys: Vec<&'a G1Point>,
message: Message,
}
impl<'a> SignedMessage<'a> {
pub fn new<T>(signing_keys: Vec<&'a T>, message: Message) -> Self
where
T: G1Ref,
{
Self {
signing_keys: signing_keys.iter().map(|k| k.g1_ref()).collect(),
message,
}
}
}
#[derive(Clone)]
pub struct SignatureSet<'a> {
pub signature: &'a G2Point,
signed_messages: Vec<SignedMessage<'a>>,
domain: Domain,
}
impl<'a> SignatureSet<'a> {
pub fn single<S, T>(
signature: &'a S,
signing_key: &'a T,
message: Message,
domain: Domain,
) -> Self
where
T: G1Ref,
S: G2Ref,
{
Self {
signature: signature.g2_ref(),
signed_messages: vec![SignedMessage::new(vec![signing_key], message)],
domain,
}
}
pub fn dual<S, T>(
signature: &'a S,
message_0: Message,
message_0_signing_keys: Vec<&'a T>,
message_1: Message,
message_1_signing_keys: Vec<&'a T>,
domain: Domain,
) -> Self
where
T: G1Ref,
S: G2Ref,
{
Self {
signature: signature.g2_ref(),
signed_messages: vec![
SignedMessage::new(message_0_signing_keys, message_0),
SignedMessage::new(message_1_signing_keys, message_1),
],
domain,
}
}
pub fn new<S>(signature: &'a S, signed_messages: Vec<SignedMessage<'a>>, domain: Domain) -> Self
where
S: G2Ref,
{
Self {
signature: signature.g2_ref(),
signed_messages,
domain,
}
}
pub fn is_valid(&self) -> bool {
let sig = milagro_bls::AggregateSignature {
point: self.signature.clone(),
};
let mut messages: Vec<Vec<u8>> = vec![];
let mut pubkeys = vec![];
self.signed_messages.iter().for_each(|signed_message| {
messages.push(signed_message.message.clone());
let point = if signed_message.signing_keys.len() == 1 {
signed_message.signing_keys[0].clone()
} else {
aggregate_public_keys(&signed_message.signing_keys)
};
pubkeys.push(milagro_bls::AggregatePublicKey { point });
});
let pubkey_refs: Vec<&milagro_bls::AggregatePublicKey> =
pubkeys.iter().map(std::borrow::Borrow::borrow).collect();
sig.verify_multiple(&messages, self.domain, &pubkey_refs)
}
}
#[cfg(not(feature = "fake_crypto"))]
pub fn verify_signature_sets<'a>(iter: impl Iterator<Item = SignatureSet<'a>>) -> bool {
let rng = &mut rand::thread_rng();
RawAggregateSignature::verify_multiple_signatures(rng, iter.map(Into::into))
}
#[cfg(feature = "fake_crypto")]
pub fn verify_signature_sets<'a>(_iter: impl Iterator<Item = SignatureSet<'a>>) -> bool {
true
}
type VerifySet<'a> = (G2Point, Vec<G1Point>, Vec<Vec<u8>>, u64);
impl<'a> Into<VerifySet<'a>> for SignatureSet<'a> {
fn into(self) -> VerifySet<'a> {
let signature = self.signature.clone();
let (pubkeys, messages): (Vec<G1Point>, Vec<Message>) = self
.signed_messages
.into_iter()
.map(|signed_message| {
let key = if signed_message.signing_keys.len() == 1 {
signed_message.signing_keys[0].clone()
} else {
aggregate_public_keys(&signed_message.signing_keys)
};
(key, signed_message.message)
})
.unzip();
(signature, pubkeys, messages, self.domain)
}
}
/// Create an aggregate public key for a list of validators, failing if any key can't be found.
fn aggregate_public_keys<'a>(public_keys: &'a [&'a G1Point]) -> G1Point {
let mut aggregate =
public_keys
.iter()
.fold(AggregatePublicKey::new(), |mut aggregate, &pubkey| {
aggregate.add_point(pubkey);
aggregate
});
aggregate.affine();
aggregate.into_raw().point
}
pub trait G1Ref {
fn g1_ref(&self) -> &G1Point;
}
impl G1Ref for AggregatePublicKey {
fn g1_ref(&self) -> &G1Point {
&self.as_raw().point
}
}
impl G1Ref for PublicKey {
fn g1_ref(&self) -> &G1Point {
&self.as_raw().point
}
}
pub trait G2Ref {
fn g2_ref(&self) -> &G2Point;
}
impl G2Ref for AggregateSignature {
fn g2_ref(&self) -> &G2Point {
&self.as_raw().point
}
}
impl G2Ref for Signature {
fn g2_ref(&self) -> &G2Point {
&self.as_raw().point
}
}

544
eth2/utils/ssz/README.md
View File

@ -1,543 +1,3 @@
# simpleserialize (ssz) [WIP]
# simpleserialize (ssz)
This is currently a ***Work In Progress*** crate.
SimpleSerialize is a serialization protocol described by Vitalik Buterin. The
method is tentatively intended for use in the Ethereum Beacon Chain as
described in the [Ethereum 2.1 Spec](https://notes.ethereum.org/s/Syj3QZSxm).
The Beacon Chain specification is the core, canonical specification which we
are following.
The current reference implementation has been described in the [Beacon Chain
Repository](https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py).
*Please Note: This implementation is presently a placeholder until the final
spec is decided.*\
*Do not rely upon it for reference.*
## Table of Contents
* [SimpleSerialize Overview](#simpleserialize-overview)
+ [Serialize/Encode](#serializeencode)
- [int or uint: 8/16/24/32/64/256](#int-or-uint-816243264256)
- [Address](#address)
- [Hash32](#hash32)
- [Bytes](#bytes)
- [List](#list)
+ [Deserialize/Decode](#deserializedecode)
- [Int or Uint: 8/16/24/32/64/256](#int-or-uint-816243264256)
- [Address](#address-1)
- [Hash32](#hash32-1)
- [Bytes](#bytes-1)
- [List](#list-1)
* [Technical Overview](#technical-overview)
* [Building](#building)
+ [Installing Rust](#installing-rust)
* [Dependencies](#dependencies)
+ [bytes v0.4.9](#bytes-v049)
+ [ethereum-types](#ethereum-types)
* [Interface](#interface)
+ [Encode](#encodable)
+ [Decode](#decodable)
+ [SszStream](#sszstream)
- [new()](#new)
- [append(&mut self, value: &E) -> &mut Self](#appendmut-self-value-e---mut-self)
- [append_encoded_val(&mut self, vec: &Vec)](#append_encoded_valmut-self-vec-vec)
- [append_vec(&mut self, vec: &Vec)](#append_vecmut-self-vec-vec)
- [drain(self) -> Vec](#drainself---vec)
+ [decode_ssz(ssz_bytes: &(u8), index: usize) -> Result](#decode_sszssz_bytes-u8-index-usize---resultt-usize-decodeerror)
+ [decode_ssz_list(ssz_bytes: &(u8), index: usize) -> Result, usize), DecodeError>](#decode_ssz_listssz_bytes-u8-index-usize---resultvec-usize-decodeerror)
+ [decode_length(bytes: &(u8), index: usize, length_bytes: usize) -> Result](#decode_lengthbytes-u8-index-usize-length_bytes-usize---resultusize-decodeerror)
* [Usage](#usage)
+ [Serializing/Encoding](#serializingencoding)
- [Rust](#rust)
* [Deserializing/Decoding](#deserializingdecoding)
- [Rust](#rust-1)
---
## SimpleSerialize Overview
The ``simpleserialize`` method for serialization follows simple byte conversion,
making it effective and efficient for encoding and decoding.
The decoding requires knowledge of the data **type** and the order of the
serialization.
Syntax:
| Shorthand | Meaning |
|:-------------|:----------------------------------------------------|
| `little` | ``little endian`` |
| `to_bytes` | convert to bytes. Params: ``(size, byte order)`` |
| `from_bytes` | convert from bytes. Params: ``(bytes, byte order)`` |
| `value` | the value to serialize |
| `rawbytes` | raw encoded/serialized bytes |
| `len(value)` | get the length of the value. (number of bytes etc) |
### Serialize/Encode
#### int or uint: 8/16/24/32/64/256
Convert directly to bytes the size of the int. (e.g. ``int16 = 2 bytes``)
All integers are serialized as **little endian**.
| Check to perform | Code |
|:-----------------------|:------------------------|
| Int size is not 0 | ``int_size > 0`` |
| Size is a byte integer | ``int_size % 8 == 0`` |
| Value is less than max | ``2**int_size > value`` |
```python
buffer_size = int_size / 8
return value.to_bytes(buffer_size, 'little')
```
#### Address
The address should already come as a hash/byte format. Ensure that length is
**20**.
| Check to perform | Code |
|:-----------------------|:---------------------|
| Length is correct (20) | ``len(value) == 20`` |
```python
assert( len(value) == 20 )
return value
```
#### Hash32
The hash32 should already be a 32 byte length serialized data format. The safety
check ensures the 32 byte length is satisfied.
| Check to perform | Code |
|:-----------------------|:---------------------|
| Length is correct (32) | ``len(value) == 32`` |
```python
assert( len(value) == 32 )
return value
```
#### Bytes
For general `byte` type:
1. Get the length/number of bytes; Encode into a 4 byte integer.
2. Append the value to the length and return: ``[ length_bytes ] + [
value_bytes ]``
```python
byte_length = (len(value)).to_bytes(4, 'little')
return byte_length + value
```
#### List
For lists of values, get the length of the list and then serialize the value
of each item in the list:
1. For each item in list:
1. serialize.
2. append to string.
2. Get size of serialized string. Encode into a 4 byte integer.
```python
serialized_list_string = ''
for item in value:
serialized_list_string += serialize(item)
serialized_len = len(serialized_list_string)
return serialized_len + serialized_list_string
```
### Deserialize/Decode
The decoding requires knowledge of the type of the item to be decoded. When
performing decoding on an entire serialized string, it also requires knowledge
of what order the objects have been serialized in.
Note: Each return will provide ``deserialized_object, new_index`` keeping track
of the new index.
At each step, the following checks should be made:
| Check Type | Check |
|:-------------------------|:----------------------------------------------------------|
| Ensure sufficient length | ``length(rawbytes) > current_index + deserialize_length`` |
#### Int or Uint: 8/16/24/32/64/256
Convert directly from bytes into integer utilising the number of bytes the same
size as the integer length. (e.g. ``int16 == 2 bytes``)
All integers are interpreted as **little endian**.
```python
byte_length = int_size / 8
new_index = current_index + int_size
return int.from_bytes(rawbytes[current_index:current_index+int_size], 'little'), new_index
```
#### Address
Return the 20 bytes.
```python
new_index = current_index + 20
return rawbytes[current_index:current_index+20], new_index
```
#### Hash32
Return the 32 bytes.
```python
new_index = current_index + 32
return rawbytes[current_index:current_index+32], new_index
```
#### Bytes
Get the length of the bytes, return the bytes.
```python
bytes_length = int.from_bytes(rawbytes[current_index:current_index+4], 'little')
new_index = current_index + 4 + bytes_lenth
return rawbytes[current_index+4:current_index+4+bytes_length], new_index
```
#### List
Deserialize each object in the list.
1. Get the length of the serialized list.
2. Loop through deseralizing each item in the list until you reach the
entire length of the list.
| Check type | code |
|:------------------------------------|:--------------------------------------|
| rawbytes has enough left for length | ``len(rawbytes) > current_index + 4`` |
```python
total_length = int.from_bytes(rawbytes[current_index:current_index+4], 'little')
new_index = current_index + 4 + total_length
item_index = current_index + 4
deserialized_list = []
while item_index < new_index:
object, item_index = deserialize(rawbytes, item_index, item_type)
deserialized_list.append(object)
return deserialized_list, new_index
```
## Technical Overview
The SimpleSerialize is a simple method for serializing objects for use in the
Ethereum beacon chain proposed by Vitalik Buterin. There are currently two
implementations denoting the functionality, the [Reference
Implementation](https://github.com/ethereum/beacon_chain/blob/master/ssz/ssz.py)
and the [Module](https://github.com/ethereum/research/tree/master/py_ssz) in
Ethereum research. It is being developed as a crate for the [**Rust programming
language**](https://www.rust-lang.org).
The crate will provide the functionality to serialize several types in
accordance with the spec and provide a serialized stream of bytes.
## Building
ssz currently builds on **rust v1.27.1**
### Installing Rust
The [**Rustup**](https://rustup.rs/) tool provides functionality to easily
manage rust on your local instance. It is a recommended method for installing
rust.
Installing on Linux or OSX:
```bash
curl https://sh.rustup.rs -sSf | sh
```
Installing on Windows:
* 32 Bit: [ https://win.rustup.rs/i686 ](https://win.rustup.rs/i686)
* 64 Bit: [ https://win.rustup.rs/x86_64 ](https://win.rustup.rs/x86_64)
## Dependencies
All dependencies are listed in the ``Cargo.toml`` file.
To build and install all related dependencies:
```bash
cargo build
```
### bytes v0.4.9
The `bytes` crate provides effective Byte Buffer implementations and
interfaces.
Documentation: [ https://docs.rs/bytes/0.4.9/bytes/ ](https://docs.rs/bytes/0.4.9/bytes/)
### ethereum-types
The `ethereum-types` provide primitives for types that are commonly used in the
ethereum protocol. This crate is provided by [Parity](https://www.parity.io/).
Github: [ https://github.com/paritytech/primitives ](https://github.com/paritytech/primitives)
---
## Interface
### Encode
A type is **Encode** if it has a valid ``ssz_append`` function. This is
used to ensure that the object/type can be serialized.
```rust
pub trait Encode {
fn ssz_append(&self, s: &mut SszStream);
}
```
### Decode
A type is **Decode** if it has a valid ``ssz_decode`` function. This is
used to ensure the object is deserializable.
```rust
pub trait Decode: Sized {
fn ssz_decode(bytes: &[u8], index: usize) -> Result<(Self, usize), DecodeError>;
}
```
### SszStream
The main implementation is the `SszStream` struct. The struct contains a
buffer of bytes, a Vector of `uint8`.
#### new()
Create a new, empty instance of the SszStream.
**Example**
```rust
let mut ssz = SszStream::new()
```
#### append<E>(&mut self, value: &E) -> &mut Self
Appends a value that can be encoded into the stream.
| Parameter | Description |
|:---------:|:-----------------------------------------|
| ``value`` | Encode value to append to the stream. |
**Example**
```rust
ssz.append(&x)
```
#### append_encoded_val(&mut self, vec: &Vec<u8>)
Appends some ssz encoded bytes to the stream.
| Parameter | Description |
|:---------:|:----------------------------------|
| ``vec`` | A vector of serialized ssz bytes. |
**Example**
```rust
let mut a = [0, 1];
ssz.append_encoded_val(&a.to_vec());
```
#### append_vec<E>(&mut self, vec: &Vec<E>)
Appends some vector (list) of encodable values to the stream.
| Parameter | Description |
|:---------:|:----------------------------------------------|
| ``vec`` | Vector of Encode objects to be serialized. |
**Example**
```rust
ssz.append_vec(attestations);
```
#### drain(self) -> Vec<u8>
Consumes the ssz stream and returns the buffer of bytes.
**Example**
```rust
ssz.drain()
```
### decode_ssz<T>(ssz_bytes: &[u8], index: usize) -> Result<(T, usize), DecodeError>
Decodes a single ssz serialized value of type `T`. Note: `T` must be decodable.
| Parameter | Description |
|:-------------:|:------------------------------------|
| ``ssz_bytes`` | Serialized list of bytes. |
| ``index`` | Starting index to deserialize from. |
**Returns**
| Return Value | Description |
|:-------------------:|:----------------------------------------------|
| ``Tuple(T, usize)`` | Returns the tuple of the type and next index. |
| ``DecodeError`` | Error if the decoding could not be performed. |
**Example**
```rust
let res: Result<(u16, usize), DecodeError> = decode_ssz(&encoded_ssz, 0);
```
### decode_ssz_list<T>(ssz_bytes: &[u8], index: usize) -> Result<(Vec<T>, usize), DecodeError>
Decodes a list of serialized values into a vector.
| Parameter | Description |
|:-------------:|:------------------------------------|
| ``ssz_bytes`` | Serialized list of bytes. |
| ``index`` | Starting index to deserialize from. |
**Returns**
| Return Value | Description |
|:------------------------:|:----------------------------------------------|
| ``Tuple(Vec<T>, usize)`` | Returns the tuple of the type and next index. |
| ``DecodeError`` | Error if the decoding could not be performed. |
**Example**
```rust
let decoded: Result<(Vec<usize>, usize), DecodeError> = decode_ssz_list( &encoded_ssz, 0);
```
### decode_length(bytes: &[u8], index: usize, length_bytes: usize) -> Result<usize, DecodeError>
Deserializes the "length" value in the serialized bytes from the index. The
length of bytes is given (usually 4 stated in the reference implementation) and
is often the value appended to the list in front of the actual serialized
object.
| Parameter | Description |
|:----------------:|:-------------------------------------------|
| ``bytes`` | Serialized list of bytes. |
| ``index`` | Starting index to deserialize from. |
| ``length_bytes`` | Number of bytes to deserialize into usize. |
**Returns**
| Return Value | Description |
|:---------------:|:-----------------------------------------------------------|
| ``usize`` | The length of the serialized object following this length. |
| ``DecodeError`` | Error if the decoding could not be performed. |
**Example**
```rust
let length_of_serialized: Result<usize, DecodeError> = decode_length(&encoded, 0, 4);
```
---
## Usage
### Serializing/Encoding
#### Rust
Create the `simpleserialize` stream that will produce the serialized objects.
```rust
let mut ssz = SszStream::new();
```
Encode the values that you need by using the ``append(..)`` method on the `SszStream`.
The **append** function is how the value gets serialized.
```rust
let x: u64 = 1 << 32;
ssz.append(&x);
```
To get the serialized byte vector use ``drain()`` on the `SszStream`.
```rust
ssz.drain()
```
**Example**
```rust
// 1 << 32 = 4294967296;
// As bytes it should equal: [0,0,0,1,0,0,0]
let x: u64 = 1 << 32;
// Create the new ssz stream
let mut ssz = SszStream::new();
// Serialize x
ssz.append(&x);
// Check that it is correct.
assert_eq!(ssz.drain(), vec![0,0,0,1,0,0,0]);
```
## Deserializing/Decoding
#### Rust
From the `simpleserialize` bytes, we are converting to the object.
```rust
let ssz = vec![0, 0, 8, 255, 255, 255, 255, 255, 255, 255, 255];
// Returns the result and the next index to decode.
let (result, index): (u64, usize) = decode_ssz(&ssz, 3).unwrap();
// Check for correctness
// 2**64-1 = 18446744073709551615
assert_eq!(result, 18446744073709551615);
// Index = 3 (initial index) + 8 (8 byte int) = 11
assert_eq!(index, 11);
```
Decoding a list of items:
```rust
// Encoded/Serialized list with junk numbers at the front
let serialized_list = vec![ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 32, 0, 0, 0,
0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0,
0, 0, 0, 15, 0, 0, 0, 0, 0, 0, 0, 15];
// Returns the result (Vector of usize) and the index of the next
let decoded: (Vec<usize>, usize) = decode_ssz_list(&serialized_list, 10).unwrap();
// Check for correctness
assert_eq!(decoded.0, vec![15,15,15,15]);
assert_eq!(decoded.1, 46);
```
[<img src="https://img.shields.io/crates/v/eth2_ssz">](https://crates.io/crates/eth2_ssz)

20
tests/ef_tests/src/cases/operations.rs
View File

@ -8,7 +8,7 @@ use ssz::Decode;
use state_processing::per_block_processing::{
errors::BlockProcessingError, process_attestations, process_attester_slashings,
process_block_header, process_deposits, process_exits, process_proposer_slashings,
process_transfers,
process_transfers, VerifySignatures,
};
use std::fmt::Debug;
use std::path::Path;
@ -53,7 +53,7 @@ impl<E: EthSpec> Operation<E> for Attestation<E> {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_attestations(state, &[self.clone()], spec)
process_attestations(state, &[self.clone()], VerifySignatures::True, spec)
}
}
@ -67,7 +67,7 @@ impl<E: EthSpec> Operation<E> for AttesterSlashing<E> {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_attester_slashings(state, &[self.clone()], spec)
process_attester_slashings(state, &[self.clone()], VerifySignatures::True, spec)
}
}
@ -91,7 +91,7 @@ impl<E: EthSpec> Operation<E> for ProposerSlashing {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_proposer_slashings(state, &[self.clone()], spec)
process_proposer_slashings(state, &[self.clone()], VerifySignatures::True, spec)
}
}
@ -101,7 +101,7 @@ impl<E: EthSpec> Operation<E> for Transfer {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_transfers(state, &[self.clone()], spec)
process_transfers(state, &[self.clone()], VerifySignatures::True, spec)
}
}
@ -115,7 +115,7 @@ impl<E: EthSpec> Operation<E> for VoluntaryExit {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_exits(state, &[self.clone()], spec)
process_exits(state, &[self.clone()], VerifySignatures::True, spec)
}
}
@ -133,7 +133,13 @@ impl<E: EthSpec> Operation<E> for BeaconBlock<E> {
state: &mut BeaconState<E>,
spec: &ChainSpec,
) -> Result<(), BlockProcessingError> {
process_block_header(state, self, spec, true)
Ok(process_block_header(
state,
self,
None,
VerifySignatures::True,
spec,
)?)
}
}

14
tests/ef_tests/src/cases/sanity_blocks.rs
View File

@ -4,7 +4,7 @@ use crate::case_result::compare_beacon_state_results_without_caches;
use crate::decode::{ssz_decode_file, yaml_decode_file};
use serde_derive::Deserialize;
use state_processing::{
per_block_processing, per_slot_processing, BlockInvalid, BlockProcessingError,
per_block_processing, per_slot_processing, BlockProcessingError, BlockSignatureStrategy,
};
use types::{BeaconBlock, BeaconState, EthSpec, RelativeEpoch};
@ -80,14 +80,18 @@ impl<E: EthSpec> Case for SanityBlocks<E> {
.build_committee_cache(RelativeEpoch::Current, spec)
.unwrap();
per_block_processing(&mut state, block, spec)?;
per_block_processing(
&mut state,
block,
None,
BlockSignatureStrategy::VerifyIndividual,
spec,
)?;
if block.state_root == state.canonical_root() {
Ok(())
} else {
Err(BlockProcessingError::Invalid(
BlockInvalid::StateRootMismatch,
))
Err(BlockProcessingError::StateRootMismatch)
}
})
.map(|_| state);