50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
use types::{AttestationData, FreeAttestation, Signature, Slot};
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#[derive(Debug, PartialEq, Clone)]
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pub enum BeaconNodeError {
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RemoteFailure(String),
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DecodeFailure,
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}
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#[derive(Debug, PartialEq, Clone)]
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pub enum PublishOutcome {
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ValidAttestation,
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InvalidAttestation(String),
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}
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/// Defines the methods required to produce and publish blocks on a Beacon Node.
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pub trait BeaconNode: Send + Sync {
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fn produce_attestation_data(
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&self,
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slot: Slot,
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shard: u64,
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) -> Result<Option<AttestationData>, BeaconNodeError>;
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fn publish_attestation_data(
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&self,
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free_attestation: FreeAttestation,
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) -> Result<PublishOutcome, BeaconNodeError>;
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}
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#[derive(Debug, PartialEq, Clone)]
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pub enum DutiesReaderError {
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UnknownValidator,
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UnknownEpoch,
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EpochLengthIsZero,
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Poisoned,
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}
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/// Informs a validator of their duties (e.g., block production).
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pub trait DutiesReader: Send + Sync {
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/// Returns `Some(shard)` if this slot is an attestation slot. Otherwise, returns `None.`
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fn attestation_shard(&self, slot: Slot) -> Result<Option<u64>, DutiesReaderError>;
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/// Returns `Some(shard)` if this slot is an attestation slot. Otherwise, returns `None.`
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fn validator_index(&self) -> Option<u64>;
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}
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/// Signs message using an internally-maintained private key.
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pub trait Signer {
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fn sign_attestation_message(&self, message: &[u8], domain: u64) -> Option<Signature>;
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}
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