4331834003
* Move tests -> testing * Directory restructure * Update Cargo.toml during restructure * Update Makefile during restructure * Fix arbitrary path
46 lines
1.4 KiB
Rust
46 lines
1.4 KiB
Rust
use serde_derive::{Deserialize, Serialize};
|
|
use ssz::ssz_encode;
|
|
use ssz_derive::{Decode, Encode};
|
|
use types::{AttestationData, ChainSpec, Domain, Epoch, Fork, Hash256};
|
|
|
|
/// Serialized `AttestationData` augmented with a domain to encode the fork info.
|
|
#[derive(
|
|
PartialEq, Eq, Clone, Hash, Debug, PartialOrd, Ord, Encode, Decode, Serialize, Deserialize,
|
|
)]
|
|
pub struct AttestationId {
|
|
v: Vec<u8>,
|
|
}
|
|
|
|
/// Number of domain bytes that the end of an attestation ID is padded with.
|
|
const DOMAIN_BYTES_LEN: usize = std::mem::size_of::<Hash256>();
|
|
|
|
impl AttestationId {
|
|
pub fn from_data(
|
|
attestation: &AttestationData,
|
|
fork: &Fork,
|
|
genesis_validators_root: Hash256,
|
|
spec: &ChainSpec,
|
|
) -> Self {
|
|
let mut bytes = ssz_encode(attestation);
|
|
let epoch = attestation.target.epoch;
|
|
bytes.extend_from_slice(
|
|
AttestationId::compute_domain_bytes(epoch, fork, genesis_validators_root, spec)
|
|
.as_bytes(),
|
|
);
|
|
AttestationId { v: bytes }
|
|
}
|
|
|
|
pub fn compute_domain_bytes(
|
|
epoch: Epoch,
|
|
fork: &Fork,
|
|
genesis_validators_root: Hash256,
|
|
spec: &ChainSpec,
|
|
) -> Hash256 {
|
|
spec.get_domain(epoch, Domain::BeaconAttester, fork, genesis_validators_root)
|
|
}
|
|
|
|
pub fn domain_bytes_match(&self, domain_bytes: &Hash256) -> bool {
|
|
&self.v[self.v.len() - DOMAIN_BYTES_LEN..] == domain_bytes.as_bytes()
|
|
}
|
|
}
|