mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-29 06:37:17 +00:00
49 lines
2.1 KiB
Go
49 lines
2.1 KiB
Go
// Package attestations tracks the life-cycle of the latest attestations
|
|
// from each validator. It also contains libraries to create attestation
|
|
// message, verify attestation correctness and slashing conditions.
|
|
package attestations
|
|
|
|
import (
|
|
"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
|
|
pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
|
|
)
|
|
|
|
// IsDoubleVote checks if both of the attestations have been used to vote for the same slot.
|
|
// Spec:
|
|
// def is_double_vote(attestation_data_1: AttestationData,
|
|
// attestation_data_2: AttestationData) -> bool
|
|
// """
|
|
// Checks if the two ``AttestationData`` have the same target.
|
|
// """
|
|
// target_epoch_1 = slot_to_epoch(attestation_data_1.slot)
|
|
// target_epoch_2 = slot_to_epoch(attestation_data_2.slot)
|
|
// return target_epoch_1 == target_epoch_2
|
|
func IsDoubleVote(attestation1 *pb.AttestationData, attestation2 *pb.AttestationData) bool {
|
|
targetEpoch1 := helpers.SlotToEpoch(attestation1.Slot)
|
|
targetEpoch2 := helpers.SlotToEpoch(attestation2.Slot)
|
|
return targetEpoch1 == targetEpoch2
|
|
}
|
|
|
|
// IsSurroundVote checks if the data provided by the attestations fulfill the conditions for
|
|
// a surround vote.
|
|
// Spec:
|
|
// def is_surround_vote(attestation_data_1: AttestationData,
|
|
// attestation_data_2: AttestationData) -> bool:
|
|
// """
|
|
// Checks if ``attestation_data_1`` surrounds ``attestation_data_2``.
|
|
// """
|
|
// source_epoch_1 = attestation_data_1.justified_epoch
|
|
// source_epoch_2 = attestation_data_2.justified_epoch
|
|
// target_epoch_1 = slot_to_epoch(attestation_data_1.slot)
|
|
// target_epoch_2 = slot_to_epoch(attestation_data_2.slot)
|
|
//
|
|
// return source_epoch_1 < source_epoch_2 and target_epoch_2 < target_epoch_1
|
|
func IsSurroundVote(attestation1 *pb.AttestationData, attestation2 *pb.AttestationData) bool {
|
|
sourceEpoch1 := attestation1.JustifiedEpoch
|
|
sourceEpoch2 := attestation2.JustifiedEpoch
|
|
targetEpoch1 := helpers.SlotToEpoch(attestation1.Slot)
|
|
targetEpoch2 := helpers.SlotToEpoch(attestation2.Slot)
|
|
|
|
return sourceEpoch1 < sourceEpoch2 && targetEpoch2 < targetEpoch1
|
|
}
|