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Add AttestationSlashingBuilder

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This commit is contained in:
Paul Hauner 2019-03-02 16:05:25 +11:00
parent ff2783a1cb
commit bb4d392a98
No known key found for this signature in database
GPG Key ID: D362883A9218FCC6
3 changed files with 96 additions and 71 deletions
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76
beacon_node/beacon_chain/test_harness/src/bin.rs
View File

@ -7,6 +7,7 @@ use env_logger::{Builder, Env};
use log::{info, warn};
use ssz::TreeHash;
use std::{fs::File, io::prelude::*};
use types::attester_slashing::AttesterSlashingBuilder;
use types::*;
use yaml_rust::{Yaml, YamlLoader};
@ -195,82 +196,17 @@ fn build_double_vote_attester_slashing(
harness: &BeaconChainHarness,
validator_indices: &[u64],
) -> AttesterSlashing {
let double_voted_slot = Slot::new(0);
let shard = 0;
let justified_epoch = Epoch::new(0);
let epoch = Epoch::new(0);
let hash_1 = Hash256::from("1".as_bytes());
let hash_2 = Hash256::from("2".as_bytes());
let mut slashable_attestation_1 = SlashableAttestation {
validator_indices: validator_indices.to_vec(),
data: AttestationData {
slot: double_voted_slot,
shard,
beacon_block_root: hash_1,
epoch_boundary_root: hash_1,
shard_block_root: hash_1,
latest_crosslink: Crosslink {
epoch,
shard_block_root: hash_1,
},
justified_epoch,
justified_block_root: hash_1,
},
custody_bitfield: Bitfield::new(),
aggregate_signature: AggregateSignature::new(),
let signer = |validator_index: u64, message: &[u8], epoch: Epoch, domain: u64| {
harness
.validator_sign(validator_index as usize, message, epoch, domain)
.expect("Unable to sign AttesterSlashing")
};
let mut slashable_attestation_2 = SlashableAttestation {
validator_indices: validator_indices.to_vec(),
data: AttestationData {
slot: double_voted_slot,
shard,
beacon_block_root: hash_2,
epoch_boundary_root: hash_2,
shard_block_root: hash_2,
latest_crosslink: Crosslink {
epoch,
shard_block_root: hash_2,
},
justified_epoch,
justified_block_root: hash_2,
},
custody_bitfield: Bitfield::new(),
aggregate_signature: AggregateSignature::new(),
};
let add_signatures = |attestation: &mut SlashableAttestation| {
for (i, validator_index) in validator_indices.iter().enumerate() {
let attestation_data_and_custody_bit = AttestationDataAndCustodyBit {
data: attestation.data.clone(),
custody_bit: attestation.custody_bitfield.get(i).unwrap(),
};
let message = attestation_data_and_custody_bit.hash_tree_root();
let signature = harness
.validator_sign(
*validator_index as usize,
&message[..],
epoch,
harness.spec.domain_attestation,
)
.expect("Unable to sign attestation with unknown validator index.");
attestation.aggregate_signature.add(&signature);
}
};
add_signatures(&mut slashable_attestation_1);
add_signatures(&mut slashable_attestation_2);
AttesterSlashing {
slashable_attestation_1,
slashable_attestation_2,
}
AttesterSlashingBuilder::double_vote(validator_indices, signer, &harness.spec)
}
pub type DepositTuple = (u64, Deposit, Keypair);
pub type ProposerSlashingTuple = (u64, ProposerSlashing);
// (slot, validator_indices)
pub type AttesterSlashingTuple = (u64, Vec<u64>);
struct ExecutionResult {

6
eth2/types/src/attester_slashing.rs
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@ -1,9 +1,13 @@
use crate::{test_utils::TestRandom, ChainSpec, SlashableAttestation};
use crate::{test_utils::TestRandom, SlashableAttestation};
use rand::RngCore;
use serde_derive::Serialize;
use ssz_derive::{Decode, Encode, TreeHash};
use test_random_derive::TestRandom;
mod builder;
pub use builder::AttesterSlashingBuilder;
#[derive(Debug, PartialEq, Clone, Serialize, Encode, Decode, TreeHash, TestRandom)]
pub struct AttesterSlashing {
pub slashable_attestation_1: SlashableAttestation,

85
eth2/types/src/attester_slashing/builder.rs Normal file
View File

@ -0,0 +1,85 @@
use crate::*;
use ssz::TreeHash;
pub struct AttesterSlashingBuilder();
impl AttesterSlashingBuilder {
pub fn double_vote<F>(
validator_indices: &[u64],
signer: F,
spec: &ChainSpec,
) -> AttesterSlashing
where
F: Fn(u64, &[u8], Epoch, u64) -> Signature,
{
let double_voted_slot = Slot::new(0);
let shard = 0;
let justified_epoch = Epoch::new(0);
let epoch = Epoch::new(0);
let hash_1 = Hash256::from("1".as_bytes());
let hash_2 = Hash256::from("2".as_bytes());
let mut slashable_attestation_1 = SlashableAttestation {
validator_indices: validator_indices.to_vec(),
data: AttestationData {
slot: double_voted_slot,
shard,
beacon_block_root: hash_1,
epoch_boundary_root: hash_1,
shard_block_root: hash_1,
latest_crosslink: Crosslink {
epoch,
shard_block_root: hash_1,
},
justified_epoch,
justified_block_root: hash_1,
},
custody_bitfield: Bitfield::new(),
aggregate_signature: AggregateSignature::new(),
};
let mut slashable_attestation_2 = SlashableAttestation {
validator_indices: validator_indices.to_vec(),
data: AttestationData {
slot: double_voted_slot,
shard,
beacon_block_root: hash_2,
epoch_boundary_root: hash_2,
shard_block_root: hash_2,
latest_crosslink: Crosslink {
epoch,
shard_block_root: hash_2,
},
justified_epoch,
justified_block_root: hash_2,
},
custody_bitfield: Bitfield::new(),
aggregate_signature: AggregateSignature::new(),
};
let add_signatures = |attestation: &mut SlashableAttestation| {
for (i, validator_index) in validator_indices.iter().enumerate() {
let attestation_data_and_custody_bit = AttestationDataAndCustodyBit {
data: attestation.data.clone(),
custody_bit: attestation.custody_bitfield.get(i).unwrap(),
};
let message = attestation_data_and_custody_bit.hash_tree_root();
let signature = signer(
*validator_index,
&message[..],
epoch,
spec.domain_attestation,
);
attestation.aggregate_signature.add(&signature);
}
};
add_signatures(&mut slashable_attestation_1);
add_signatures(&mut slashable_attestation_2);
AttesterSlashing {
slashable_attestation_1,
slashable_attestation_2,
}
}
}