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Fix per_epoch_processing so it compiles again

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Paul Hauner 2019-03-06 18:57:41 +11:00
parent 17210faf3a
commit 8a25fd48cf
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5 changed files with 592 additions and 593 deletions
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1
eth2/state_processing/src/lib.rs
View File

@ -9,5 +9,6 @@ pub use per_block_processing::{
errors::{BlockInvalid, BlockProcessingError}, errors::{BlockInvalid, BlockProcessingError},
per_block_processing, per_block_processing_without_verifying_block_signature, per_block_processing, per_block_processing_without_verifying_block_signature,
}; };
pub use per_epoch_processing::{errors::EpochProcessingError, per_epoch_processing};
// pub use epoch_processable::{EpochProcessable, Error as EpochProcessingError}; // pub use epoch_processable::{EpochProcessable, Error as EpochProcessingError};
// pub use slot_processable::{Error as SlotProcessingError, SlotProcessable}; // pub use slot_processable::{Error as SlotProcessingError, SlotProcessable};

627
eth2/state_processing/src/per_epoch_processing.rs
View File

@ -1,16 +1,16 @@
use errors::EpochProcessingError as Error; use errors::{EpochProcessingError as Error, WinningRootError};
use grouped_attesters::GroupedAttesters;
use integer_sqrt::IntegerSquareRoot; use integer_sqrt::IntegerSquareRoot;
use log::{debug, trace}; use log::{debug, trace};
use rayon::prelude::*; use rayon::prelude::*;
use ssz::TreeHash; use ssz::TreeHash;
use std::collections::{HashMap, HashSet}; use std::collections::{HashMap, HashSet};
use std::iter::FromIterator; use std::iter::FromIterator;
use types::{ use types::{validator_registry::get_active_validator_indices, *};
validator_registry::get_active_validator_indices, BeaconState, BeaconStateError, ChainSpec, use winning_root::{winning_root, WinningRoot};
Crosslink, Epoch, Hash256, InclusionError, PendingAttestation, RelativeEpoch,
};
mod errors; pub mod errors;
mod grouped_attesters;
mod tests; mod tests;
mod winning_root; mod winning_root;
@ -25,215 +25,144 @@ macro_rules! safe_sub_assign {
}; };
} }
pub trait EpochProcessable { pub fn per_epoch_processing(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
fn per_epoch_processing(&mut self, spec: &ChainSpec) -> Result<(), Error>; let current_epoch = state.current_epoch(spec);
} let previous_epoch = state.previous_epoch(spec);
let next_epoch = state.next_epoch(spec);
impl EpochProcessable for BeaconState {
// Cyclomatic complexity is ignored. It would be ideal to split this function apart, however it
// remains monolithic to allow for easier spec updates. Once the spec is more stable we can
// optimise.
#[allow(clippy::cyclomatic_complexity)]
fn per_epoch_processing(&mut self, spec: &ChainSpec) -> Result<(), Error> {
let current_epoch = self.current_epoch(spec);
let previous_epoch = self.previous_epoch(spec);
let next_epoch = self.next_epoch(spec);
debug!( debug!(
"Starting per-epoch processing on epoch {}...", "Starting per-epoch processing on epoch {}...",
self.current_epoch(spec) state.current_epoch(spec)
); );
// Ensure all of the caches are built. // Ensure all of the caches are built.
self.build_epoch_cache(RelativeEpoch::Previous, spec)?; state.build_epoch_cache(RelativeEpoch::Previous, spec)?;
self.build_epoch_cache(RelativeEpoch::Current, spec)?; state.build_epoch_cache(RelativeEpoch::Current, spec)?;
self.build_epoch_cache(RelativeEpoch::Next, spec)?; state.build_epoch_cache(RelativeEpoch::Next, spec)?;
let attesters = GroupedAttesters::new(&state, spec)?;
/*
* Validators attesting during the current epoch.
*/
let active_validator_indices = get_active_validator_indices( let active_validator_indices = get_active_validator_indices(
&self.validator_registry, &state.validator_registry,
self.slot.epoch(spec.slots_per_epoch), state.slot.epoch(spec.slots_per_epoch),
);
let current_total_balance = self.get_total_balance(&active_validator_indices[..], spec);
trace!(
"{} validators with a total balance of {} wei.",
active_validator_indices.len(),
current_total_balance
); );
let current_epoch_attestations: Vec<&PendingAttestation> = self let current_total_balance = state.get_total_balance(&active_validator_indices[..], spec);
.latest_attestations let previous_total_balance = state.get_total_balance(
.par_iter() &get_active_validator_indices(&state.validator_registry, previous_epoch)[..],
.filter(|a| {
(a.data.slot / spec.slots_per_epoch).epoch(spec.slots_per_epoch)
== self.current_epoch(spec)
})
.collect();
trace!(
"Current epoch attestations: {}",
current_epoch_attestations.len()
);
let current_epoch_boundary_attestations: Vec<&PendingAttestation> =
current_epoch_attestations
.par_iter()
.filter(
|a| match self.get_block_root(self.current_epoch_start_slot(spec), spec) {
Some(block_root) => {
(a.data.epoch_boundary_root == *block_root)
&& (a.data.justified_epoch == self.justified_epoch)
}
None => unreachable!(),
},
)
.cloned()
.collect();
let current_epoch_boundary_attester_indices = self
.get_attestation_participants_union(&current_epoch_boundary_attestations[..], spec)?;
let current_epoch_boundary_attesting_balance =
self.get_total_balance(&current_epoch_boundary_attester_indices[..], spec);
trace!(
"Current epoch boundary attesters: {}",
current_epoch_boundary_attester_indices.len()
);
/*
* Validators attesting during the previous epoch
*/
/*
* Validators that made an attestation during the previous epoch
*/
let previous_epoch_attestations: Vec<&PendingAttestation> = self
.latest_attestations
.par_iter()
.filter(|a| {
//TODO: ensure these saturating subs are correct.
(a.data.slot / spec.slots_per_epoch).epoch(spec.slots_per_epoch)
== self.previous_epoch(spec)
})
.collect();
debug!(
"previous epoch attestations: {}",
previous_epoch_attestations.len()
);
let previous_epoch_attester_indices =
self.get_attestation_participants_union(&previous_epoch_attestations[..], spec)?;
let previous_total_balance = self.get_total_balance(
&get_active_validator_indices(&self.validator_registry, previous_epoch),
spec, spec,
); );
/* process_eth1_data(state, spec);
* Validators targetting the previous justified slot
*/
let previous_epoch_justified_attestations: Vec<&PendingAttestation> = {
let mut a: Vec<&PendingAttestation> = current_epoch_attestations
.iter()
.filter(|a| a.data.justified_epoch == self.previous_justified_epoch)
.cloned()
.collect();
let mut b: Vec<&PendingAttestation> = previous_epoch_attestations
.iter()
.filter(|a| a.data.justified_epoch == self.previous_justified_epoch)
.cloned()
.collect();
a.append(&mut b);
a
};
let previous_epoch_justified_attester_indices = self process_justification(
.get_attestation_participants_union(&previous_epoch_justified_attestations[..], spec)?; state,
let previous_epoch_justified_attesting_balance = current_total_balance,
self.get_total_balance(&previous_epoch_justified_attester_indices[..], spec); previous_total_balance,
attesters.previous_epoch_boundary.balance,
/* attesters.current_epoch_boundary.balance,
* Validators justifying the epoch boundary block at the start of the previous epoch spec,
*/
let previous_epoch_boundary_attestations: Vec<&PendingAttestation> =
previous_epoch_justified_attestations
.iter()
.filter(
|a| match self.get_block_root(self.previous_epoch_start_slot(spec), spec) {
Some(block_root) => a.data.epoch_boundary_root == *block_root,
None => unreachable!(),
},
)
.cloned()
.collect();
let previous_epoch_boundary_attester_indices = self
.get_attestation_participants_union(&previous_epoch_boundary_attestations[..], spec)?;
let previous_epoch_boundary_attesting_balance =
self.get_total_balance(&previous_epoch_boundary_attester_indices[..], spec);
/*
* Validators attesting to the expected beacon chain head during the previous epoch.
*/
let previous_epoch_head_attestations: Vec<&PendingAttestation> =
previous_epoch_attestations
.iter()
.filter(|a| match self.get_block_root(a.data.slot, spec) {
Some(block_root) => a.data.beacon_block_root == *block_root,
None => unreachable!(),
})
.cloned()
.collect();
let previous_epoch_head_attester_indices =
self.get_attestation_participants_union(&previous_epoch_head_attestations[..], spec)?;
let previous_epoch_head_attesting_balance =
self.get_total_balance(&previous_epoch_head_attester_indices[..], spec);
debug!(
"previous_epoch_head_attester_balance of {} wei.",
previous_epoch_head_attesting_balance
); );
/* // Crosslinks
* Eth1 Data let winning_root_for_shards = process_crosslinks(state, spec)?;
*/
if self.next_epoch(spec) % spec.eth1_data_voting_period == 0 { // Rewards and Penalities
for eth1_data_vote in &self.eth1_data_votes { let active_validator_indices_hashset: HashSet<usize> =
if eth1_data_vote.vote_count * 2 > spec.eth1_data_voting_period { HashSet::from_iter(active_validator_indices.iter().cloned());
self.latest_eth1_data = eth1_data_vote.eth1_data.clone(); process_rewards_and_penalities(
} state,
} active_validator_indices_hashset,
self.eth1_data_votes = vec![]; &attesters,
previous_total_balance,
&winning_root_for_shards,
spec,
)?;
// Ejections
state.process_ejections(spec);
// Validator Registry
process_validator_registry(state, spec)?;
// Final updates
state.latest_active_index_roots[(next_epoch.as_usize()
+ spec.activation_exit_delay as usize)
% spec.latest_active_index_roots_length] = hash_tree_root(get_active_validator_indices(
&state.validator_registry,
next_epoch + Epoch::from(spec.activation_exit_delay),
));
state.latest_slashed_balances[next_epoch.as_usize() % spec.latest_slashed_exit_length] =
state.latest_slashed_balances[current_epoch.as_usize() % spec.latest_slashed_exit_length];
state.latest_randao_mixes[next_epoch.as_usize() % spec.latest_randao_mixes_length] = state
.get_randao_mix(current_epoch, spec)
.and_then(|x| Some(*x))
.ok_or_else(|| Error::NoRandaoSeed)?;
state.latest_attestations = state
.latest_attestations
.iter()
.filter(|a| a.data.slot.epoch(spec.slots_per_epoch) >= current_epoch)
.cloned()
.collect();
// Rotate the epoch caches to suit the epoch transition.
state.advance_caches();
debug!("Epoch transition complete.");
Ok(())
} }
/* fn hash_tree_root<T: TreeHash>(input: Vec<T>) -> Hash256 {
* Justification Hash256::from(&input.hash_tree_root()[..])
*/ }
let mut new_justified_epoch = self.justified_epoch; /// Spec v0.4.0
self.justification_bitfield <<= 1; fn process_eth1_data(state: &mut BeaconState, spec: &ChainSpec) {
let next_epoch = state.next_epoch(spec);
let voting_period = spec.epochs_per_eth1_voting_period;
if next_epoch % voting_period == 0 {
for eth1_data_vote in &state.eth1_data_votes {
if eth1_data_vote.vote_count * 2 > voting_period {
state.latest_eth1_data = eth1_data_vote.eth1_data.clone();
}
}
state.eth1_data_votes = vec![];
}
}
/// Spec v0.4.0
fn process_justification(
state: &mut BeaconState,
current_total_balance: u64,
previous_total_balance: u64,
previous_epoch_boundary_attesting_balance: u64,
current_epoch_boundary_attesting_balance: u64,
spec: &ChainSpec,
) {
let previous_epoch = state.previous_epoch(spec);
let current_epoch = state.current_epoch(spec);
let mut new_justified_epoch = state.justified_epoch;
state.justification_bitfield <<= 1;
// If > 2/3 of the total balance attested to the previous epoch boundary // If > 2/3 of the total balance attested to the previous epoch boundary
// //
// - Set the 2nd bit of the bitfield. // - Set the 2nd bit of the bitfield.
// - Set the previous epoch to be justified. // - Set the previous epoch to be justified.
if (3 * previous_epoch_boundary_attesting_balance) >= (2 * current_total_balance) { if (3 * previous_epoch_boundary_attesting_balance) >= (2 * previous_total_balance) {
self.justification_bitfield |= 2; state.justification_bitfield |= 2;
new_justified_epoch = previous_epoch; new_justified_epoch = previous_epoch;
trace!(">= 2/3 voted for previous epoch boundary");
} }
// If > 2/3 of the total balance attested to the previous epoch boundary // If > 2/3 of the total balance attested to the previous epoch boundary
// //
// - Set the 1st bit of the bitfield. // - Set the 1st bit of the bitfield.
// - Set the current epoch to be justified. // - Set the current epoch to be justified.
if (3 * current_epoch_boundary_attesting_balance) >= (2 * current_total_balance) { if (3 * current_epoch_boundary_attesting_balance) >= (2 * current_total_balance) {
self.justification_bitfield |= 1; state.justification_bitfield |= 1;
new_justified_epoch = current_epoch; new_justified_epoch = current_epoch;
trace!(">= 2/3 voted for current epoch boundary");
} }
// If: // If:
@ -242,11 +171,10 @@ impl EpochProcessable for BeaconState {
// - The previous justified justified epoch was three epochs ago. // - The previous justified justified epoch was three epochs ago.
// //
// Then, set the finalized epoch to be three epochs ago. // Then, set the finalized epoch to be three epochs ago.
if ((self.justification_bitfield >> 1) % 8 == 0b111) if ((state.justification_bitfield >> 1) % 8 == 0b111)
& (self.previous_justified_epoch == previous_epoch - 2) & (state.previous_justified_epoch == previous_epoch - 2)
{ {
self.finalized_epoch = self.previous_justified_epoch; state.finalized_epoch = state.previous_justified_epoch;
trace!("epoch - 3 was finalized (1st condition).");
} }
// If: // If:
// //
@ -254,11 +182,10 @@ impl EpochProcessable for BeaconState {
// - The previous justified epoch was two epochs ago. // - The previous justified epoch was two epochs ago.
// //
// Then, set the finalized epoch to two epochs ago. // Then, set the finalized epoch to two epochs ago.
if ((self.justification_bitfield >> 1) % 4 == 0b11) if ((state.justification_bitfield >> 1) % 4 == 0b11)
& (self.previous_justified_epoch == previous_epoch - 1) & (state.previous_justified_epoch == previous_epoch - 1)
{ {
self.finalized_epoch = self.previous_justified_epoch; state.finalized_epoch = state.previous_justified_epoch;
trace!("epoch - 2 was finalized (2nd condition).");
} }
// If: // If:
// //
@ -266,10 +193,8 @@ impl EpochProcessable for BeaconState {
// - The presently justified epoch was two epochs ago. // - The presently justified epoch was two epochs ago.
// //
// Then, set the finalized epoch to two epochs ago. // Then, set the finalized epoch to two epochs ago.
if (self.justification_bitfield % 8 == 0b111) & (self.justified_epoch == previous_epoch - 1) if (state.justification_bitfield % 8 == 0b111) & (state.justified_epoch == previous_epoch - 1) {
{ state.finalized_epoch = state.justified_epoch;
self.finalized_epoch = self.justified_epoch;
trace!("epoch - 2 was finalized (3rd condition).");
} }
// If: // If:
// //
@ -277,29 +202,42 @@ impl EpochProcessable for BeaconState {
// - Set the previous epoch to be justified. // - Set the previous epoch to be justified.
// //
// Then, set the finalized epoch to be the previous epoch. // Then, set the finalized epoch to be the previous epoch.
if (self.justification_bitfield % 4 == 0b11) & (self.justified_epoch == previous_epoch) { if (state.justification_bitfield % 4 == 0b11) & (state.justified_epoch == previous_epoch) {
self.finalized_epoch = self.justified_epoch; state.finalized_epoch = state.justified_epoch;
trace!("epoch - 1 was finalized (4th condition).");
} }
self.previous_justified_epoch = self.justified_epoch; state.previous_justified_epoch = state.justified_epoch;
self.justified_epoch = new_justified_epoch; state.justified_epoch = new_justified_epoch;
}
debug!( pub type WinningRootHashSet = HashMap<u64, Result<WinningRoot, WinningRootError>>;
"Finalized epoch {}, justified epoch {}.",
self.finalized_epoch, self.justified_epoch
);
/* fn process_crosslinks(
* Crosslinks state: &mut BeaconState,
*/ spec: &ChainSpec,
) -> Result<WinningRootHashSet, Error> {
let current_epoch_attestations: Vec<&PendingAttestation> = state
.latest_attestations
.par_iter()
.filter(|a| {
(a.data.slot / spec.slots_per_epoch).epoch(spec.slots_per_epoch)
== state.current_epoch(spec)
})
.collect();
let previous_epoch_attestations: Vec<&PendingAttestation> = state
.latest_attestations
.par_iter()
.filter(|a| {
(a.data.slot / spec.slots_per_epoch).epoch(spec.slots_per_epoch)
== state.previous_epoch(spec)
})
.collect();
// Cached for later lookups.
let mut winning_root_for_shards: HashMap<u64, Result<WinningRoot, WinningRootError>> = let mut winning_root_for_shards: HashMap<u64, Result<WinningRoot, WinningRootError>> =
HashMap::new(); HashMap::new();
// for slot in state.slot.saturating_sub(2 * spec.slots_per_epoch)..state.slot {
// for slot in self.slot.saturating_sub(2 * spec.slots_per_epoch)..self.slot { for slot in state.previous_epoch(spec).slot_iter(spec.slots_per_epoch) {
for slot in self.previous_epoch(spec).slot_iter(spec.slots_per_epoch) {
trace!( trace!(
"Finding winning root for slot: {} (epoch: {})", "Finding winning root for slot: {} (epoch: {})",
slot, slot,
@ -307,29 +245,28 @@ impl EpochProcessable for BeaconState {
); );
// Clone is used to remove the borrow. It becomes an issue later when trying to mutate // Clone is used to remove the borrow. It becomes an issue later when trying to mutate
// `self.balances`. // `state.balances`.
let crosslink_committees_at_slot = let crosslink_committees_at_slot =
self.get_crosslink_committees_at_slot(slot, spec)?.clone(); state.get_crosslink_committees_at_slot(slot, spec)?.clone();
for (crosslink_committee, shard) in crosslink_committees_at_slot { for (crosslink_committee, shard) in crosslink_committees_at_slot {
let shard = shard as u64; let shard = shard as u64;
let winning_root = winning_root( let winning_root = winning_root(
self, state,
shard, shard,
&current_epoch_attestations, &current_epoch_attestations[..],
&previous_epoch_attestations, &previous_epoch_attestations[..],
spec, spec,
); );
if let Ok(winning_root) = &winning_root { if let Ok(winning_root) = &winning_root {
let total_committee_balance = let total_committee_balance = state.get_total_balance(&crosslink_committee, spec);
self.get_total_balance(&crosslink_committee[..], spec);
if (3 * winning_root.total_attesting_balance) >= (2 * total_committee_balance) { if (3 * winning_root.total_attesting_balance) >= (2 * total_committee_balance) {
self.latest_crosslinks[shard as usize] = Crosslink { state.latest_crosslinks[shard as usize] = Crosslink {
epoch: current_epoch, epoch: state.current_epoch(spec),
shard_block_root: winning_root.shard_block_root, crosslink_data_root: winning_root.crosslink_data_root,
} }
} }
} }
@ -337,16 +274,29 @@ impl EpochProcessable for BeaconState {
} }
} }
trace!( Ok(winning_root_for_shards)
"Found {} winning shard roots.", }
winning_root_for_shards.len()
);
/* fn process_rewards_and_penalities(
* Rewards and Penalities state: &mut BeaconState,
*/ active_validator_indices: HashSet<usize>,
let base_reward_quotient = attesters: &GroupedAttesters,
previous_total_balance.integer_sqrt() / spec.base_reward_quotient; previous_total_balance: u64,
winning_root_for_shards: &HashMap<u64, Result<WinningRoot, WinningRootError>>,
spec: &ChainSpec,
) -> Result<(), Error> {
let next_epoch = state.next_epoch(spec);
let previous_epoch_attestations: Vec<&PendingAttestation> = state
.latest_attestations
.par_iter()
.filter(|a| {
(a.data.slot / spec.slots_per_epoch).epoch(spec.slots_per_epoch)
== state.previous_epoch(spec)
})
.collect();
let base_reward_quotient = previous_total_balance.integer_sqrt() / spec.base_reward_quotient;
if base_reward_quotient == 0 { if base_reward_quotient == 0 {
return Err(Error::BaseRewardQuotientIsZero); return Err(Error::BaseRewardQuotientIsZero);
} }
@ -354,104 +304,86 @@ impl EpochProcessable for BeaconState {
/* /*
* Justification and finalization * Justification and finalization
*/ */
let epochs_since_finality = next_epoch - self.finalized_epoch; let epochs_since_finality = next_epoch - state.finalized_epoch;
let previous_epoch_justified_attester_indices_hashset: HashSet<usize> =
HashSet::from_iter(previous_epoch_justified_attester_indices.iter().cloned());
let previous_epoch_boundary_attester_indices_hashset: HashSet<usize> =
HashSet::from_iter(previous_epoch_boundary_attester_indices.iter().cloned());
let previous_epoch_head_attester_indices_hashset: HashSet<usize> =
HashSet::from_iter(previous_epoch_head_attester_indices.iter().cloned());
let previous_epoch_attester_indices_hashset: HashSet<usize> =
HashSet::from_iter(previous_epoch_attester_indices.iter().cloned());
let active_validator_indices_hashset: HashSet<usize> = let active_validator_indices_hashset: HashSet<usize> =
HashSet::from_iter(active_validator_indices.iter().cloned()); HashSet::from_iter(active_validator_indices.iter().cloned());
debug!("previous epoch justified attesters: {}, previous epoch boundary attesters: {}, previous epoch head attesters: {}, previous epoch attesters: {}", previous_epoch_justified_attester_indices.len(), previous_epoch_boundary_attester_indices.len(), previous_epoch_head_attester_indices.len(), previous_epoch_attester_indices.len());
debug!("{} epochs since finality.", epochs_since_finality);
if epochs_since_finality <= 4 { if epochs_since_finality <= 4 {
for index in 0..self.validator_balances.len() { for index in 0..state.validator_balances.len() {
let base_reward = self.base_reward(index, base_reward_quotient, spec); let base_reward = state.base_reward(index, base_reward_quotient, spec);
if previous_epoch_justified_attester_indices_hashset.contains(&index) { if attesters.previous_epoch.indices.contains(&index) {
safe_add_assign!( safe_add_assign!(
self.validator_balances[index], state.validator_balances[index],
base_reward * previous_epoch_justified_attesting_balance base_reward * attesters.previous_epoch.balance / previous_total_balance
);
} else if active_validator_indices_hashset.contains(&index) {
safe_sub_assign!(state.validator_balances[index], base_reward);
}
if attesters.previous_epoch_boundary.indices.contains(&index) {
safe_add_assign!(
state.validator_balances[index],
base_reward * attesters.previous_epoch_boundary.balance
/ previous_total_balance / previous_total_balance
); );
} else if active_validator_indices_hashset.contains(&index) { } else if active_validator_indices_hashset.contains(&index) {
safe_sub_assign!(self.validator_balances[index], base_reward); safe_sub_assign!(state.validator_balances[index], base_reward);
} }
if previous_epoch_boundary_attester_indices_hashset.contains(&index) { if attesters.previous_epoch_head.indices.contains(&index) {
safe_add_assign!( safe_add_assign!(
self.validator_balances[index], state.validator_balances[index],
base_reward * previous_epoch_boundary_attesting_balance base_reward * attesters.previous_epoch_head.balance / previous_total_balance
/ previous_total_balance
); );
} else if active_validator_indices_hashset.contains(&index) { } else if active_validator_indices_hashset.contains(&index) {
safe_sub_assign!(self.validator_balances[index], base_reward); safe_sub_assign!(state.validator_balances[index], base_reward);
}
if previous_epoch_head_attester_indices_hashset.contains(&index) {
safe_add_assign!(
self.validator_balances[index],
base_reward * previous_epoch_head_attesting_balance
/ previous_total_balance
);
} else if active_validator_indices_hashset.contains(&index) {
safe_sub_assign!(self.validator_balances[index], base_reward);
} }
} }
for index in previous_epoch_attester_indices { for &index in &attesters.previous_epoch.indices {
let base_reward = self.base_reward(index, base_reward_quotient, spec); let base_reward = state.base_reward(index, base_reward_quotient, spec);
let inclusion_distance = let inclusion_distance =
self.inclusion_distance(&previous_epoch_attestations, index, spec)?; state.inclusion_distance(&previous_epoch_attestations, index, spec)?;
safe_add_assign!( safe_add_assign!(
self.validator_balances[index], state.validator_balances[index],
base_reward * spec.min_attestation_inclusion_delay / inclusion_distance base_reward * spec.min_attestation_inclusion_delay / inclusion_distance
) )
} }
} else { } else {
for index in 0..self.validator_balances.len() { for index in 0..state.validator_balances.len() {
let inactivity_penalty = self.inactivity_penalty( let inactivity_penalty =
index, state.inactivity_penalty(index, epochs_since_finality, base_reward_quotient, spec);
epochs_since_finality,
base_reward_quotient,
spec,
);
if active_validator_indices_hashset.contains(&index) { if active_validator_indices_hashset.contains(&index) {
if !previous_epoch_justified_attester_indices_hashset.contains(&index) { if !attesters.previous_epoch.indices.contains(&index) {
safe_sub_assign!(self.validator_balances[index], inactivity_penalty); safe_sub_assign!(state.validator_balances[index], inactivity_penalty);
} }
if !previous_epoch_boundary_attester_indices_hashset.contains(&index) { if !attesters.previous_epoch_boundary.indices.contains(&index) {
safe_sub_assign!(self.validator_balances[index], inactivity_penalty); safe_sub_assign!(state.validator_balances[index], inactivity_penalty);
} }
if !previous_epoch_head_attester_indices_hashset.contains(&index) { if !attesters.previous_epoch_head.indices.contains(&index) {
safe_sub_assign!(self.validator_balances[index], inactivity_penalty); safe_sub_assign!(state.validator_balances[index], inactivity_penalty);
} }
if self.validator_registry[index].penalized_epoch <= current_epoch { if state.validator_registry[index].slashed {
let base_reward = self.base_reward(index, base_reward_quotient, spec); let base_reward = state.base_reward(index, base_reward_quotient, spec);
safe_sub_assign!( safe_sub_assign!(
self.validator_balances[index], state.validator_balances[index],
2 * inactivity_penalty + base_reward 2 * inactivity_penalty + base_reward
); );
} }
} }
} }
for index in previous_epoch_attester_indices { for &index in &attesters.previous_epoch.indices {
let base_reward = self.base_reward(index, base_reward_quotient, spec); let base_reward = state.base_reward(index, base_reward_quotient, spec);
let inclusion_distance = let inclusion_distance =
self.inclusion_distance(&previous_epoch_attestations, index, spec)?; state.inclusion_distance(&previous_epoch_attestations, index, spec)?;
safe_sub_assign!( safe_sub_assign!(
self.validator_balances[index], state.validator_balances[index],
base_reward base_reward
- base_reward * spec.min_attestation_inclusion_delay / inclusion_distance - base_reward * spec.min_attestation_inclusion_delay / inclusion_distance
); );
@ -463,60 +395,53 @@ impl EpochProcessable for BeaconState {
/* /*
* Attestation inclusion * Attestation inclusion
*/ */
for &index in &previous_epoch_attester_indices_hashset { for &index in &attesters.previous_epoch.indices {
let inclusion_slot = let inclusion_slot = state.inclusion_slot(&previous_epoch_attestations[..], index, spec)?;
self.inclusion_slot(&previous_epoch_attestations[..], index, spec)?; let proposer_index = state
let proposer_index = self
.get_beacon_proposer_index(inclusion_slot, spec) .get_beacon_proposer_index(inclusion_slot, spec)
.map_err(|_| Error::UnableToDetermineProducer)?; .map_err(|_| Error::UnableToDetermineProducer)?;
let base_reward = self.base_reward(proposer_index, base_reward_quotient, spec); let base_reward = state.base_reward(proposer_index, base_reward_quotient, spec);
safe_add_assign!( safe_add_assign!(
self.validator_balances[proposer_index], state.validator_balances[proposer_index],
base_reward / spec.includer_reward_quotient base_reward / spec.attestation_inclusion_reward_quotient
); );
} }
trace!(
"Previous epoch attesters: {}.",
previous_epoch_attester_indices_hashset.len()
);
/* /*
* Crosslinks * Crosslinks
*/ */
for slot in self.previous_epoch(spec).slot_iter(spec.slots_per_epoch) { for slot in state.previous_epoch(spec).slot_iter(spec.slots_per_epoch) {
// Clone is used to remove the borrow. It becomes an issue later when trying to mutate // Clone is used to remove the borrow. It becomes an issue later when trying to mutate
// `self.balances`. // `state.balances`.
let crosslink_committees_at_slot = let crosslink_committees_at_slot =
self.get_crosslink_committees_at_slot(slot, spec)?.clone(); state.get_crosslink_committees_at_slot(slot, spec)?.clone();
for (_crosslink_committee, shard) in crosslink_committees_at_slot { for (_crosslink_committee, shard) in crosslink_committees_at_slot {
let shard = shard as u64; let shard = shard as u64;
if let Some(Ok(winning_root)) = winning_root_for_shards.get(&shard) { if let Some(Ok(winning_root)) = winning_root_for_shards.get(&shard) {
// TODO: remove the map. // TODO: remove the map.
let attesting_validator_indices: HashSet<usize> = HashSet::from_iter( let attesting_validator_indices: HashSet<usize> =
winning_root.attesting_validator_indices.iter().cloned(), HashSet::from_iter(winning_root.attesting_validator_indices.iter().cloned());
);
for index in 0..self.validator_balances.len() { for index in 0..state.validator_balances.len() {
let base_reward = self.base_reward(index, base_reward_quotient, spec); let base_reward = state.base_reward(index, base_reward_quotient, spec);
if attesting_validator_indices.contains(&index) { if attesting_validator_indices.contains(&index) {
safe_add_assign!( safe_add_assign!(
self.validator_balances[index], state.validator_balances[index],
base_reward * winning_root.total_attesting_balance base_reward * winning_root.total_attesting_balance
/ winning_root.total_balance / winning_root.total_balance
); );
} else { } else {
safe_sub_assign!(self.validator_balances[index], base_reward); safe_sub_assign!(state.validator_balances[index], base_reward);
} }
} }
for index in &winning_root.attesting_validator_indices { for index in &winning_root.attesting_validator_indices {
let base_reward = self.base_reward(*index, base_reward_quotient, spec); let base_reward = state.base_reward(*index, base_reward_quotient, spec);
safe_add_assign!( safe_add_assign!(
self.validator_balances[*index], state.validator_balances[*index],
base_reward * winning_root.total_attesting_balance base_reward * winning_root.total_attesting_balance
/ winning_root.total_balance / winning_root.total_balance
); );
@ -525,30 +450,29 @@ impl EpochProcessable for BeaconState {
} }
} }
/* Ok(())
* Ejections }
*/
self.process_ejections(spec);
/* fn process_validator_registry(state: &mut BeaconState, spec: &ChainSpec) -> Result<(), Error> {
* Validator Registry let current_epoch = state.current_epoch(spec);
*/ let next_epoch = state.next_epoch(spec);
self.previous_shuffling_epoch = self.current_shuffling_epoch;
self.previous_epoch_start_shard = self.current_epoch_start_shard; state.previous_shuffling_epoch = state.current_shuffling_epoch;
state.previous_shuffling_start_shard = state.current_shuffling_start_shard;
debug!( debug!(
"setting previous_shuffling_seed to : {}", "setting previous_shuffling_seed to : {}",
self.current_shuffling_seed state.current_shuffling_seed
); );
self.previous_shuffling_seed = self.current_shuffling_seed; state.previous_shuffling_seed = state.current_shuffling_seed;
let should_update_validator_registy = if self.finalized_epoch let should_update_validator_registy = if state.finalized_epoch
> self.validator_registry_update_epoch > state.validator_registry_update_epoch
{ {
(0..self.get_current_epoch_committee_count(spec)).all(|i| { (0..state.get_current_epoch_committee_count(spec)).all(|i| {
let shard = (self.current_epoch_start_shard + i as u64) % spec.shard_count; let shard = (state.current_shuffling_start_shard + i as u64) % spec.shard_count;
self.latest_crosslinks[shard as usize].epoch > self.validator_registry_update_epoch state.latest_crosslinks[shard as usize].epoch > state.validator_registry_update_epoch
}) })
} else { } else {
false false
@ -556,53 +480,28 @@ impl EpochProcessable for BeaconState {
if should_update_validator_registy { if should_update_validator_registy {
trace!("updating validator registry."); trace!("updating validator registry.");
self.update_validator_registry(spec); state.update_validator_registry(spec);
self.current_shuffling_epoch = next_epoch; state.current_shuffling_epoch = next_epoch;
self.current_epoch_start_shard = (self.current_epoch_start_shard state.current_shuffling_start_shard = (state.current_shuffling_start_shard
+ self.get_current_epoch_committee_count(spec) as u64) + state.get_current_epoch_committee_count(spec) as u64)
% spec.shard_count; % spec.shard_count;
self.current_shuffling_seed = self.generate_seed(self.current_shuffling_epoch, spec)? state.current_shuffling_seed = state.generate_seed(state.current_shuffling_epoch, spec)?
} else { } else {
trace!("not updating validator registry."); trace!("not updating validator registry.");
let epochs_since_last_registry_update = let epochs_since_last_registry_update =
current_epoch - self.validator_registry_update_epoch; current_epoch - state.validator_registry_update_epoch;
if (epochs_since_last_registry_update > 1) if (epochs_since_last_registry_update > 1)
& epochs_since_last_registry_update.is_power_of_two() & epochs_since_last_registry_update.is_power_of_two()
{ {
self.current_shuffling_epoch = next_epoch; state.current_shuffling_epoch = next_epoch;
self.current_shuffling_seed = state.current_shuffling_seed =
self.generate_seed(self.current_shuffling_epoch, spec)? state.generate_seed(state.current_shuffling_epoch, spec)?
} }
} }
self.process_penalties_and_exits(spec); state.process_slashings(spec);
state.process_exit_queue(spec);
self.latest_index_roots[(next_epoch.as_usize() + spec.entry_exit_delay as usize)
% spec.latest_index_roots_length] = hash_tree_root(get_active_validator_indices(
&self.validator_registry,
next_epoch + Epoch::from(spec.entry_exit_delay),
));
self.latest_penalized_balances[next_epoch.as_usize() % spec.latest_penalized_exit_length] =
self.latest_penalized_balances
[current_epoch.as_usize() % spec.latest_penalized_exit_length];
self.latest_randao_mixes[next_epoch.as_usize() % spec.latest_randao_mixes_length] = self
.get_randao_mix(current_epoch, spec)
.and_then(|x| Some(*x))
.ok_or_else(|| Error::NoRandaoSeed)?;
self.latest_attestations = self
.latest_attestations
.iter()
.filter(|a| a.data.slot.epoch(spec.slots_per_epoch) >= current_epoch)
.cloned()
.collect();
debug!("Epoch transition complete.");
Ok(()) Ok(())
} }
}
fn hash_tree_root<T: TreeHash>(input: Vec<T>) -> Hash256 {
Hash256::from(&input.hash_tree_root()[..])
}

98
eth2/state_processing/src/per_epoch_processing/grouped_attesters.rs Normal file
View File

@ -0,0 +1,98 @@
use std::collections::HashSet;
use types::*;
#[derive(Default)]
pub struct Attesters {
pub indices: HashSet<usize>,
pub balance: u64,
}
impl Attesters {
fn add(&mut self, additional_indices: &[usize], additional_balance: u64) {
self.indices.reserve(additional_indices.len());
for i in additional_indices {
self.indices.insert(*i);
}
self.balance.saturating_add(additional_balance);
}
}
pub struct GroupedAttesters {
pub current_epoch: Attesters,
pub current_epoch_boundary: Attesters,
pub previous_epoch: Attesters,
pub previous_epoch_boundary: Attesters,
pub previous_epoch_head: Attesters,
}
impl GroupedAttesters {
pub fn new(state: &BeaconState, spec: &ChainSpec) -> Result<Self, BeaconStateError> {
let mut current_epoch = Attesters::default();
let mut current_epoch_boundary = Attesters::default();
let mut previous_epoch = Attesters::default();
let mut previous_epoch_boundary = Attesters::default();
let mut previous_epoch_head = Attesters::default();
for a in &state.latest_attestations {
let attesting_indices =
state.get_attestation_participants(&a.data, &a.aggregation_bitfield, spec)?;
let attesting_balance = state.get_total_balance(&attesting_indices, spec);
if is_from_epoch(a, state.current_epoch(spec), spec) {
current_epoch.add(&attesting_indices, attesting_balance);
if has_common_epoch_boundary_root(a, state, state.current_epoch(spec), spec)? {
current_epoch_boundary.add(&attesting_indices, attesting_balance);
}
} else if is_from_epoch(a, state.previous_epoch(spec), spec) {
previous_epoch.add(&attesting_indices, attesting_balance);
if has_common_epoch_boundary_root(a, state, state.previous_epoch(spec), spec)? {
previous_epoch_boundary.add(&attesting_indices, attesting_balance);
}
if has_common_beacon_block_root(a, state, spec)? {
previous_epoch_head.add(&attesting_indices, attesting_balance);
}
}
}
Ok(Self {
current_epoch,
current_epoch_boundary,
previous_epoch,
previous_epoch_boundary,
previous_epoch_head,
})
}
}
fn is_from_epoch(a: &PendingAttestation, epoch: Epoch, spec: &ChainSpec) -> bool {
a.data.slot.epoch(spec.slots_per_epoch) == epoch
}
fn has_common_epoch_boundary_root(
a: &PendingAttestation,
state: &BeaconState,
epoch: Epoch,
spec: &ChainSpec,
) -> Result<bool, BeaconStateError> {
let slot = epoch.start_slot(spec.slots_per_epoch);
let state_boundary_root = *state
.get_block_root(slot, spec)
.ok_or_else(|| BeaconStateError::InsufficientBlockRoots)?;
Ok(a.data.epoch_boundary_root == state_boundary_root)
}
fn has_common_beacon_block_root(
a: &PendingAttestation,
state: &BeaconState,
spec: &ChainSpec,
) -> Result<bool, BeaconStateError> {
let state_block_root = *state
.get_block_root(a.data.slot, spec)
.ok_or_else(|| BeaconStateError::InsufficientBlockRoots)?;
Ok(a.data.beacon_block_root == state_block_root)
}

4
eth2/state_processing/src/per_epoch_processing/tests.rs
View File

@ -1,5 +1,5 @@
#![cfg(test)] #![cfg(test)]
use crate::EpochProcessable; use crate::per_epoch_processing;
use env_logger::{Builder, Env}; use env_logger::{Builder, Env};
use types::beacon_state::BeaconStateBuilder; use types::beacon_state::BeaconStateBuilder;
use types::*; use types::*;
@ -17,5 +17,5 @@ fn runs_without_error() {
let mut state = builder.cloned_state(); let mut state = builder.cloned_state();
let spec = &builder.spec; let spec = &builder.spec;
state.per_epoch_processing(spec).unwrap(); per_epoch_processing(&mut state, spec).unwrap();
} }

19
eth2/state_processing/src/per_epoch_processing/winning_root.rs
View File

@ -1,15 +1,16 @@
use super::WinningRootError; use super::errors::WinningRootError;
use std::collections::HashMap;
use types::*; use types::*;
#[derive(Clone)] #[derive(Clone)]
pub struct WinningRoot { pub struct WinningRoot {
pub shard_block_root: Hash256, pub crosslink_data_root: Hash256,
pub attesting_validator_indices: Vec<usize>, pub attesting_validator_indices: Vec<usize>,
pub total_balance: u64, pub total_balance: u64,
pub total_attesting_balance: u64, pub total_attesting_balance: u64,
} }
fn winning_root( pub fn winning_root(
state: &BeaconState, state: &BeaconState,
shard: u64, shard: u64,
current_epoch_attestations: &[&PendingAttestation], current_epoch_attestations: &[&PendingAttestation],
@ -28,16 +29,16 @@ fn winning_root(
continue; continue;
} }
let shard_block_root = &a.data.shard_block_root; let crosslink_data_root = &a.data.crosslink_data_root;
if candidates.contains_key(shard_block_root) { if candidates.contains_key(crosslink_data_root) {
continue; continue;
} }
let attesting_validator_indices = attestations let attesting_validator_indices = attestations
.iter() .iter()
.try_fold::<_, _, Result<_, BeaconStateError>>(vec![], |mut acc, a| { .try_fold::<_, _, Result<_, BeaconStateError>>(vec![], |mut acc, a| {
if (a.data.shard == shard) && (a.data.shard_block_root == *shard_block_root) { if (a.data.shard == shard) && (a.data.crosslink_data_root == *crosslink_data_root) {
acc.append(&mut state.get_attestation_participants( acc.append(&mut state.get_attestation_participants(
&a.data, &a.data,
&a.aggregation_bitfield, &a.aggregation_bitfield,
@ -60,13 +61,13 @@ fn winning_root(
} }
let candidate_root = WinningRoot { let candidate_root = WinningRoot {
shard_block_root: *shard_block_root, crosslink_data_root: *crosslink_data_root,
attesting_validator_indices, attesting_validator_indices,
total_attesting_balance, total_attesting_balance,
total_balance, total_balance,
}; };
candidates.insert(*shard_block_root, candidate_root); candidates.insert(*crosslink_data_root, candidate_root);
} }
Ok(candidates Ok(candidates
@ -78,7 +79,7 @@ fn winning_root(
None None
} }
}) })
.min_by_key(|candidate| candidate.shard_block_root) .min_by_key(|candidate| candidate.crosslink_data_root)
.ok_or_else(|| WinningRootError::NoWinningRoot)? .ok_or_else(|| WinningRootError::NoWinningRoot)?
// TODO: avoid clone. // TODO: avoid clone.
.clone()) .clone())