cerc-io/lighthouse
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Update AttestationRecord fields

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This commit is contained in:
Paul Hauner 2018-09-19 16:55:18 +10:00
parent 928bafb3da
commit d0d336c341
No known key found for this signature in database
GPG Key ID: 303E4494BB28068C
1 changed files with 31 additions and 8 deletions
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39
lighthouse/state/attestation_record.rs
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@ -3,14 +3,14 @@ use super::utils::bls::{ AggregateSignature };
use super::ssz::{ Encodable, SszStream };
pub const MIN_SSZ_ATTESTION_RECORD_LENGTH: usize = {
8 + // slot
2 + // shard_id
4 + // oblique_parent_hashes (empty list)
32 + // shard_block_hash
5 + // attester_bitfield (assuming 1 byte of bitfield)
8 + // justified_slot
32 + // justified_block_hash
2 * 32 // aggregate sig (two 256 bit points)
8 + // slot
2 + // shard_id
4 + // oblique_parent_hashes (empty list)
4 + 32 + // shard_block_hash
5 + // attester_bitfield (assuming 1 byte of bitfield)
8 + // justified_slot
4 + 32 + // justified_block_hash
4 + (2 * 32) // aggregate sig (two 256 bit points)
};
pub struct AttestationRecord {
@ -19,6 +19,8 @@ pub struct AttestationRecord {
pub oblique_parent_hashes: Vec<Hash256>,
pub shard_block_hash: Hash256,
pub attester_bitfield: Bitfield,
pub justified_slot: u64,
pub justified_block_hash: Hash256,
pub aggregate_sig: Option<AggregateSignature>,
}
@ -29,6 +31,8 @@ impl Encodable for AttestationRecord {
s.append_vec(&self.oblique_parent_hashes);
s.append(&self.shard_block_hash);
s.append_vec(&self.attester_bitfield.to_be_vec());
s.append(&self.justified_slot);
s.append(&self.justified_block_hash);
// TODO: encode the aggregate sig correctly
s.append_vec(&vec![0_u8; 64])
}
@ -42,7 +46,26 @@ impl AttestationRecord {
oblique_parent_hashes: vec![],
shard_block_hash: Hash256::zero(),
attester_bitfield: Bitfield::new(),
justified_slot: 0,
justified_block_hash: Hash256::zero(),
aggregate_sig: None,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use super::super::ssz::SszStream;
#[test]
pub fn test_attestation_record_min_ssz_length() {
let ar = AttestationRecord::zero();
let mut ssz_stream = SszStream::new();
ssz_stream.append(&ar);
let ssz = ssz_stream.drain();
assert_eq!(ssz.len(), MIN_SSZ_ATTESTION_RECORD_LENGTH);
}
}