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Implement selections Beacon API endpoints to support DVT middleware (#7016)

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* #6610


  - [x] Add `beacon_committee_selections` endpoint
- [x] Test beacon committee aggregator and confirmed working
- [x] Add `sync_committee_selections` endpoint
- [x] Test sync committee aggregator and confirmed working
This commit is contained in:
chonghe
2025-09-03 11:50:41 +08:00
committed by GitHub
parent 7b5be8b1e7
commit a93cafee08
8 changed files with 658 additions and 237 deletions
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55
validator_client/src/lib.rs
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@@ -2,6 +2,7 @@ pub mod cli;
pub mod config;
use crate::cli::ValidatorClient;
use crate::duties_service::SelectionProofConfig;
pub use config::Config;
use initialized_validators::InitializedValidators;
use metrics::set_gauge;
@@ -55,6 +56,22 @@ const WAITING_FOR_GENESIS_POLL_TIME: Duration = Duration::from_secs(12);
const DOPPELGANGER_SERVICE_NAME: &str = "doppelganger";
/// Compute attestation selection proofs this many slots before they are required.
///
/// At start-up selection proofs will be computed with less lookahead out of necessity.
const SELECTION_PROOF_SLOT_LOOKAHEAD: u64 = 8;
/// The attestation selection proof lookahead for those running with the --distributed flag.
const SELECTION_PROOF_SLOT_LOOKAHEAD_DVT: u64 = 1;
/// Fraction of a slot at which attestation selection proof signing should happen (2 means half way).
const SELECTION_PROOF_SCHEDULE_DENOM: u32 = 2;
/// Number of epochs in advance to compute sync selection proofs when not in `distributed` mode.
pub const AGGREGATION_PRE_COMPUTE_EPOCHS: u64 = 2;
/// Number of slots in advance to compute sync selection proofs when in `distributed` mode.
pub const AGGREGATION_PRE_COMPUTE_SLOTS_DISTRIBUTED: u64 = 1;
type ValidatorStore<E> = LighthouseValidatorStore<SystemTimeSlotClock, E>;
#[derive(Clone)]
@@ -407,6 +424,41 @@ impl<E: EthSpec> ProductionValidatorClient<E> {
validator_store.prune_slashing_protection_db(slot.epoch(E::slots_per_epoch()), true);
}
// Define a config to be pass to duties_service.
// The defined config here defaults to using selections_endpoint and parallel_sign (i.e., distributed mode)
// Other DVT applications, e.g., Anchor can pass in different configs to suit different needs.
let attestation_selection_proof_config = if config.distributed {
SelectionProofConfig {
lookahead_slot: SELECTION_PROOF_SLOT_LOOKAHEAD_DVT,
computation_offset: slot_clock.slot_duration() / SELECTION_PROOF_SCHEDULE_DENOM,
selections_endpoint: true,
parallel_sign: true,
}
} else {
SelectionProofConfig {
lookahead_slot: SELECTION_PROOF_SLOT_LOOKAHEAD,
computation_offset: slot_clock.slot_duration() / SELECTION_PROOF_SCHEDULE_DENOM,
selections_endpoint: false,
parallel_sign: false,
}
};
let sync_selection_proof_config = if config.distributed {
SelectionProofConfig {
lookahead_slot: AGGREGATION_PRE_COMPUTE_SLOTS_DISTRIBUTED,
computation_offset: Duration::default(),
selections_endpoint: true,
parallel_sign: true,
}
} else {
SelectionProofConfig {
lookahead_slot: E::slots_per_epoch() * AGGREGATION_PRE_COMPUTE_EPOCHS,
computation_offset: Duration::default(),
selections_endpoint: false,
parallel_sign: false,
}
};
let duties_service = Arc::new(
DutiesServiceBuilder::new()
.slot_clock(slot_clock.clone())
@@ -415,7 +467,8 @@ impl<E: EthSpec> ProductionValidatorClient<E> {
.spec(context.eth2_config.spec.clone())
.executor(context.executor.clone())
.enable_high_validator_count_metrics(config.enable_high_validator_count_metrics)
.distributed(config.distributed)
.attestation_selection_proof_config(attestation_selection_proof_config)
.sync_selection_proof_config(sync_selection_proof_config)
.disable_attesting(config.disable_attesting)
.build()?,
);