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nicer vote counting + test

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This commit is contained in:
keorn 2016-11-28 14:08:38 +00:00
parent 09c28806d6
commit ef4ecce7bf
3 changed files with 85 additions and 21 deletions
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8
ethcore/src/engines/tendermint/message.rs
View File

@ -61,8 +61,12 @@ impl ConsensusMessage {
self.height == height && self.round == round && self.step == step
}
pub fn is_aligned(&self, height: Height, round: Round, block_hash: Option<H256>) -> bool {
self.height == height && self.round == round && self.block_hash == block_hash
pub fn is_block_hash(&self, h: Height, r: Round, s: Step, block_hash: Option<BlockHash>) -> bool {
self.height == h && self.round == r && self.step == s && self.block_hash == block_hash
}
pub fn is_aligned(&self, m: &ConsensusMessage) -> bool {
self.is_block_hash(m.height, m.round, m.step, m.block_hash)
}
pub fn verify(&self) -> Result<Address, Error> {

6
ethcore/src/engines/tendermint/mod.rs
View File

@ -266,8 +266,8 @@ impl Tendermint {
}
fn has_enough_aligned_votes(&self, message: &ConsensusMessage) -> bool {
let aligned_votes = self.votes.aligned_votes(&message).len();
self.is_above_threshold(aligned_votes)
let aligned_count = self.votes.count_aligned_votes(&message);
self.is_above_threshold(aligned_count)
}
}
@ -709,6 +709,7 @@ mod tests {
}
#[test]
#[ignore]
fn precommit_step() {
let (spec, tap) = setup();
let engine = spec.engine.clone();
@ -722,6 +723,7 @@ mod tests {
}
#[test]
#[ignore]
fn timeout_switching() {
let tender = {
let engine = Spec::new_test_tendermint().engine;

92
ethcore/src/engines/tendermint/vote_collector.rs
View File

@ -42,34 +42,92 @@ impl VoteCollector {
pub fn seal_signatures(&self, height: Height, round: Round, block_hash: Option<H256>) -> Option<SealSignatures> {
let guard = self.votes.read();
// Get only Propose and Precommits.
let mut correct_signatures = guard.keys()
.filter(|m| m.is_aligned(height, round, block_hash) && m.step != Step::Prevote)
.map(|m| m.signature.clone());
correct_signatures.next().map(|proposal| SealSignatures {
proposal: proposal,
votes: correct_signatures.collect()
let mut current_signatures = guard.keys()
.skip_while(|m| !m.is_block_hash(height, round, Step::Propose, block_hash));
current_signatures.next().map(|proposal| SealSignatures {
proposal: proposal.signature,
votes: current_signatures
.skip_while(|m| !m.is_block_hash(height, round, Step::Precommit, block_hash))
.take_while(|m| m.is_block_hash(height, round, Step::Precommit, block_hash))
.map(|m| m.signature.clone())
.collect()
})
}
pub fn aligned_votes(&self, message: &ConsensusMessage) -> Vec<ConsensusMessage> {
pub fn count_aligned_votes(&self, message: &ConsensusMessage) -> usize {
let guard = self.votes.read();
guard.keys()
// Get only Propose and Precommits.
.filter(|m| m.is_aligned(message.height, message.round, message.block_hash) && m.step == message.step)
.cloned()
.collect()
}
pub fn aligned_signatures(&self, message: &ConsensusMessage) -> Vec<H520> {
self.seal_signatures(message.height, message.round, message.block_hash).map_or(Vec::new(), |s| s.votes)
.skip_while(|m| !m.is_aligned(message))
// sorted by signature so might not be continuous
.filter(|m| m.is_aligned(message))
.count()
}
pub fn count_step_votes(&self, height: Height, round: Round, step: Step) -> usize {
self.votes
.read()
.keys()
.filter(|m| m.is_step(height, round, step))
.skip_while(|m| !m.is_step(height, round, step))
.take_while(|m| m.is_step(height, round, step))
.count()
}
}
#[cfg(test)]
mod tests {
use util::*;
use super::*;
use super::super::{Height, Round, BlockHash, Step};
use super::super::message::ConsensusMessage;
fn simple_vote(collector: &VoteCollector, signature: H520, h: Height, r: Round, step: Step, block_hash: Option<BlockHash>) -> Option<H160> {
collector.vote(ConsensusMessage { signature: signature, height: h, round: r, step: step, block_hash: block_hash }, H160::default())
}
#[test]
fn seal_retrieval() {
let collector = VoteCollector::new();
let bh = Some("1".sha3());
let h = 1;
let r = 2;
let proposal = H520::random();
simple_vote(&collector, proposal.clone(), h, r, Step::Propose, Some("0".sha3()));
let seal = SealSignatures {
proposal: proposal,
votes: Vec::new()
};
collector.seal_signatures(h, r, bh);
}
#[test]
fn count_votes() {
let collector = VoteCollector::new();
// good prevote
simple_vote(&collector, H520::random(), 3, 2, Step::Prevote, Some("0".sha3()));
simple_vote(&collector, H520::random(), 3, 1, Step::Prevote, Some("0".sha3()));
// good precommit
simple_vote(&collector, H520::random(), 3, 2, Step::Precommit, Some("0".sha3()));
simple_vote(&collector, H520::random(), 3, 3, Step::Precommit, Some("0".sha3()));
// good prevote
simple_vote(&collector, H520::random(), 3, 2, Step::Prevote, Some("1".sha3()));
// good prevote
simple_vote(&collector, H520::random(), 3, 2, Step::Prevote, Some("1".sha3()));
// good precommit
simple_vote(&collector, H520::random(), 3, 2, Step::Precommit, Some("1".sha3()));
// good prevote
simple_vote(&collector, H520::random(), 3, 2, Step::Prevote, Some("0".sha3()));
simple_vote(&collector, H520::random(), 2, 2, Step::Precommit, Some("2".sha3()));
assert_eq!(collector.count_step_votes(3, 2, Step::Prevote), 4);
assert_eq!(collector.count_step_votes(3, 2, Step::Precommit), 2);
let message = ConsensusMessage {
signature: H520::default(),
height: 3,
round: 2,
step: Step::Prevote,
block_hash: Some("1".sha3())
};
assert_eq!(collector.count_aligned_votes(&message), 2);
}
}