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Modify BeaconState and BeaconBlockBody to reflect changes in the specs. Also add new variable LATEST_RANDAO_MIXES_LENGTH to foundation

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Signed-off-by: Kirk Baird <kirk@sigmaprime.io>
This commit is contained in:
Kirk Baird 2019-01-14 19:28:57 +11:00
parent 7df6481349
commit ca28c18709
6 changed files with 59 additions and 26 deletions
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3
beacon_chain/genesis/src/beacon_block.rs
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@ -16,6 +16,9 @@ pub fn genesis_beacon_block(state_root: Hash256, spec: &ChainSpec) -> BeaconBloc
proposer_slashings: vec![],
casper_slashings: vec![],
attestations: vec![],
custody_reseeds: vec![],
custody_challenges: vec![],
custody_responses: vec![],
deposits: vec![],
exits: vec![],
},

11
beacon_chain/genesis/src/beacon_state.rs
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@ -47,11 +47,13 @@ pub fn genesis_beacon_state(spec: &ChainSpec) -> Result<BeaconState, Error> {
/*
* Randomness and committees
*/
randao_mix: spec.zero_hash,
next_seed: spec.zero_hash,
latest_randao_mixes: vec![spec.zero_hash; spec.latest_randao_mixes_length as usize],
latest_vdf_outputs: vec![spec.zero_hash; (spec.latest_randao_mixes_length / spec.epoch_length) as usize],
shard_committees_at_slots: vec![],
persistent_committees: vec![],
persistent_committee_reassignments: vec![],
/*
* Custody challenges
*/
custody_challenges: vec![],
/*
* Finality
*/
@ -66,6 +68,7 @@ pub fn genesis_beacon_state(spec: &ChainSpec) -> Result<BeaconState, Error> {
latest_block_roots: vec![spec.zero_hash; spec.epoch_length as usize],
latest_penalized_exit_balances: vec![],
latest_attestations: vec![],
batched_block_roots: vec![],
/*
* PoW receipt root
*/

1
beacon_chain/spec/src/foundation.rs
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@ -24,6 +24,7 @@ impl ChainSpec {
beacon_chain_shard_number: u64::max_value(),
bls_withdrawal_prefix_byte: 0x00,
max_casper_votes: 1_024,
latest_randao_mixes_length: 8_192,
/*
* Deposit contract
*/

1
beacon_chain/spec/src/lib.rs
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@ -18,6 +18,7 @@ pub struct ChainSpec {
pub beacon_chain_shard_number: u64,
pub bls_withdrawal_prefix_byte: u8,
pub max_casper_votes: u64,
pub latest_randao_mixes_length: u64,
/*
* Deposit contract
*/

21
beacon_chain/types/src/beacon_block_body.rs
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@ -3,11 +3,20 @@ use super::{Attestation, CasperSlashing, Deposit, Exit, ProposerSlashing};
use crate::test_utils::TestRandom;
use rand::RngCore;
// The following types are just dummy classes as they will not be defined until
// Phase 1 (Sharding phase)
type CustodyReseed = usize;
type CustodyChallenge = usize;
type CustodyResponse = usize;
#[derive(Debug, PartialEq, Clone, Default)]
pub struct BeaconBlockBody {
pub proposer_slashings: Vec<ProposerSlashing>,
pub casper_slashings: Vec<CasperSlashing>,
pub attestations: Vec<Attestation>,
pub custody_reseeds: Vec<CustodyReseed>,
pub custody_challenges: Vec<CustodyChallenge>,
pub custody_responses: Vec<CustodyResponse>,
pub deposits: Vec<Deposit>,
pub exits: Vec<Exit>,
}
@ -17,6 +26,9 @@ impl Encodable for BeaconBlockBody {
s.append_vec(&self.proposer_slashings);
s.append_vec(&self.casper_slashings);
s.append_vec(&self.attestations);
s.append_vec(&self.custody_reseeds);
s.append_vec(&self.custody_challenges);
s.append_vec(&self.custody_responses);
s.append_vec(&self.deposits);
s.append_vec(&self.exits);
}
@ -27,6 +39,9 @@ impl Decodable for BeaconBlockBody {
let (proposer_slashings, i) = <_>::ssz_decode(bytes, i)?;
let (casper_slashings, i) = <_>::ssz_decode(bytes, i)?;
let (attestations, i) = <_>::ssz_decode(bytes, i)?;
let (custody_reseeds, i) = <_>::ssz_decode(bytes, i)?;
let (custody_challenges, i) = <_>::ssz_decode(bytes, i)?;
let (custody_responses, i) = <_>::ssz_decode(bytes, i)?;
let (deposits, i) = <_>::ssz_decode(bytes, i)?;
let (exits, i) = <_>::ssz_decode(bytes, i)?;
@ -35,6 +50,9 @@ impl Decodable for BeaconBlockBody {
proposer_slashings,
casper_slashings,
attestations,
custody_reseeds,
custody_challenges,
custody_responses,
deposits,
exits,
},
@ -49,6 +67,9 @@ impl<T: RngCore> TestRandom<T> for BeaconBlockBody {
proposer_slashings: <_>::random_for_test(rng),
casper_slashings: <_>::random_for_test(rng),
attestations: <_>::random_for_test(rng),
custody_reseeds: <_>::random_for_test(rng),
custody_challenges: <_>::random_for_test(rng),
custody_responses: <_>::random_for_test(rng),
deposits: <_>::random_for_test(rng),
exits: <_>::random_for_test(rng),
}

48
beacon_chain/types/src/beacon_state.rs
View File

@ -3,7 +3,6 @@ use super::crosslink_record::CrosslinkRecord;
use super::fork_data::ForkData;
use super::pending_attestation_record::PendingAttestationRecord;
use super::shard_committee::ShardCommittee;
use super::shard_reassignment_record::ShardReassignmentRecord;
use super::validator_record::ValidatorRecord;
use super::Hash256;
use crate::test_utils::TestRandom;
@ -11,6 +10,9 @@ use hashing::canonical_hash;
use rand::RngCore;
use ssz::{ssz_encode, Decodable, DecodeError, Encodable, SszStream};
// Custody will not be added to the specs until Phase 1 (Sharding Phase) so dummay class used.
type CustodyChallenge = usize;
#[derive(Debug, PartialEq, Clone, Default)]
pub struct BeaconState {
// Misc
@ -26,11 +28,12 @@ pub struct BeaconState {
pub validator_registry_delta_chain_tip: Hash256,
// Randomness and committees
pub randao_mix: Hash256,
pub next_seed: Hash256,
pub latest_randao_mixes: Vec<Hash256>,
pub latest_vdf_outputs: Vec<Hash256>,
pub shard_committees_at_slots: Vec<Vec<ShardCommittee>>,
pub persistent_committees: Vec<Vec<u32>>,
pub persistent_committee_reassignments: Vec<ShardReassignmentRecord>,
// Custody challenges
pub custody_challenges: Vec<CustodyChallenge>,
// Finality
pub previous_justified_slot: u64,
@ -43,8 +46,9 @@ pub struct BeaconState {
pub latest_block_roots: Vec<Hash256>,
pub latest_penalized_exit_balances: Vec<u64>,
pub latest_attestations: Vec<PendingAttestationRecord>,
pub batched_block_roots: Vec<Hash256>,
// PoW receipt root
// PoW receipt root (a.k.a. deposit root)
pub processed_pow_receipt_root: Hash256,
pub candidate_pow_receipt_roots: Vec<CandidatePoWReceiptRootRecord>,
}
@ -67,11 +71,10 @@ impl Encodable for BeaconState {
s.append(&self.validator_registry_latest_change_slot);
s.append(&self.validator_registry_exit_count);
s.append(&self.validator_registry_delta_chain_tip);
s.append(&self.randao_mix);
s.append(&self.next_seed);
s.append(&self.latest_randao_mixes);
s.append(&self.latest_vdf_outputs);
s.append(&self.shard_committees_at_slots);
s.append(&self.persistent_committees);
s.append(&self.persistent_committee_reassignments);
s.append(&self.custody_challenges);
s.append(&self.previous_justified_slot);
s.append(&self.justified_slot);
s.append(&self.justification_bitfield);
@ -80,6 +83,7 @@ impl Encodable for BeaconState {
s.append(&self.latest_block_roots);
s.append(&self.latest_penalized_exit_balances);
s.append(&self.latest_attestations);
s.append(&self.batched_block_roots);
s.append(&self.processed_pow_receipt_root);
s.append(&self.candidate_pow_receipt_roots);
}
@ -95,11 +99,10 @@ impl Decodable for BeaconState {
let (validator_registry_latest_change_slot, i) = <_>::ssz_decode(bytes, i)?;
let (validator_registry_exit_count, i) = <_>::ssz_decode(bytes, i)?;
let (validator_registry_delta_chain_tip, i) = <_>::ssz_decode(bytes, i)?;
let (randao_mix, i) = <_>::ssz_decode(bytes, i)?;
let (next_seed, i) = <_>::ssz_decode(bytes, i)?;
let (latest_randao_mixes, i) = <_>::ssz_decode(bytes, i)?;
let (latest_vdf_outputs, i) = <_>::ssz_decode(bytes, i)?;
let (shard_committees_at_slots, i) = <_>::ssz_decode(bytes, i)?;
let (persistent_committees, i) = <_>::ssz_decode(bytes, i)?;
let (persistent_committee_reassignments, i) = <_>::ssz_decode(bytes, i)?;
let (custody_challenges, i) = <_>::ssz_decode(bytes, i)?;
let (previous_justified_slot, i) = <_>::ssz_decode(bytes, i)?;
let (justified_slot, i) = <_>::ssz_decode(bytes, i)?;
let (justification_bitfield, i) = <_>::ssz_decode(bytes, i)?;
@ -108,6 +111,7 @@ impl Decodable for BeaconState {
let (latest_block_roots, i) = <_>::ssz_decode(bytes, i)?;
let (latest_penalized_exit_balances, i) = <_>::ssz_decode(bytes, i)?;
let (latest_attestations, i) = <_>::ssz_decode(bytes, i)?;
let (batched_block_roots, i) = <_>::ssz_decode(bytes, i)?;
let (processed_pow_receipt_root, i) = <_>::ssz_decode(bytes, i)?;
let (candidate_pow_receipt_roots, i) = <_>::ssz_decode(bytes, i)?;
@ -121,11 +125,10 @@ impl Decodable for BeaconState {
validator_registry_latest_change_slot,
validator_registry_exit_count,
validator_registry_delta_chain_tip,
randao_mix,
next_seed,
latest_randao_mixes,
latest_vdf_outputs,
shard_committees_at_slots,
persistent_committees,
persistent_committee_reassignments,
custody_challenges,
previous_justified_slot,
justified_slot,
justification_bitfield,
@ -134,6 +137,7 @@ impl Decodable for BeaconState {
latest_block_roots,
latest_penalized_exit_balances,
latest_attestations,
batched_block_roots,
processed_pow_receipt_root,
candidate_pow_receipt_roots,
},
@ -153,11 +157,10 @@ impl<T: RngCore> TestRandom<T> for BeaconState {
validator_registry_latest_change_slot: <_>::random_for_test(rng),
validator_registry_exit_count: <_>::random_for_test(rng),
validator_registry_delta_chain_tip: <_>::random_for_test(rng),
randao_mix: <_>::random_for_test(rng),
next_seed: <_>::random_for_test(rng),
latest_randao_mixes: <_>::random_for_test(rng),
latest_vdf_outputs: <_>::random_for_test(rng),
shard_committees_at_slots: <_>::random_for_test(rng),
persistent_committees: <_>::random_for_test(rng),
persistent_committee_reassignments: <_>::random_for_test(rng),
custody_challenges: <_>::random_for_test(rng),
previous_justified_slot: <_>::random_for_test(rng),
justified_slot: <_>::random_for_test(rng),
justification_bitfield: <_>::random_for_test(rng),
@ -166,6 +169,7 @@ impl<T: RngCore> TestRandom<T> for BeaconState {
latest_block_roots: <_>::random_for_test(rng),
latest_penalized_exit_balances: <_>::random_for_test(rng),
latest_attestations: <_>::random_for_test(rng),
batched_block_roots: <_>::random_for_test(rng),
processed_pow_receipt_root: <_>::random_for_test(rng),
candidate_pow_receipt_roots: <_>::random_for_test(rng),
}