mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2025-01-03 16:37:39 +00:00
f77049ae74
* Fmt * Starting * Cont * Store aggregate attestation is better * Conflict * Done * Merge branch 'master' of git+ssh://github.com/prysmaticlabs/prysm into process-pending-atts * Comment * Better logs * Better logs * Fix existing tests * Update metric names * Preston's feedback * Broadcast atts once it's valid * Gazelle * Test for validating atts and pruning * Tests * Removed debug log * Conflict * Feedback * Merge refs/heads/master into process-pending-atts * Merge refs/heads/master into process-pending-atts
92 lines
3.1 KiB
Go
92 lines
3.1 KiB
Go
package sync
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
|
|
"github.com/libp2p/go-libp2p-core/peer"
|
|
pubsub "github.com/libp2p/go-libp2p-pubsub"
|
|
eth "github.com/prysmaticlabs/ethereumapis/eth/v1alpha1"
|
|
"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
|
|
"github.com/prysmaticlabs/prysm/beacon-chain/p2p"
|
|
"github.com/prysmaticlabs/prysm/shared/bls"
|
|
"github.com/prysmaticlabs/prysm/shared/bytesutil"
|
|
"github.com/prysmaticlabs/prysm/shared/params"
|
|
"github.com/prysmaticlabs/prysm/shared/traceutil"
|
|
"go.opencensus.io/trace"
|
|
)
|
|
|
|
// Validation
|
|
// - The attestation's committee index (attestation.data.index) is for the correct subnet.
|
|
// - The attestation is unaggregated -- that is, it has exactly one participating validator (len([bit for bit in attestation.aggregation_bits if bit == 0b1]) == 1).
|
|
// - The block being voted for (attestation.data.beacon_block_root) passes validation.
|
|
// - attestation.data.slot is within the last ATTESTATION_PROPAGATION_SLOT_RANGE slots (attestation.data.slot + ATTESTATION_PROPAGATION_SLOT_RANGE >= current_slot >= attestation.data.slot).
|
|
// - The signature of attestation is valid.
|
|
func (s *Service) validateCommitteeIndexBeaconAttestation(ctx context.Context, pid peer.ID, msg *pubsub.Message) bool {
|
|
if pid == s.p2p.PeerID() {
|
|
return true
|
|
}
|
|
// Attestation processing requires the target block to be present in the database, so we'll skip
|
|
// validating or processing attestations until fully synced.
|
|
if s.initialSync.Syncing() {
|
|
return false
|
|
}
|
|
ctx, span := trace.StartSpan(ctx, "sync.validateCommitteeIndexBeaconAttestation")
|
|
defer span.End()
|
|
|
|
// Override topic for decoding.
|
|
originalTopic := msg.TopicIDs[0]
|
|
format := p2p.GossipTypeMapping[reflect.TypeOf(ð.Attestation{})]
|
|
msg.TopicIDs[0] = format
|
|
|
|
m, err := s.decodePubsubMessage(msg)
|
|
if err != nil {
|
|
log.WithError(err).Error("Failed to decode message")
|
|
traceutil.AnnotateError(span, err)
|
|
return false
|
|
}
|
|
// Restore topic.
|
|
msg.TopicIDs[0] = originalTopic
|
|
|
|
att, ok := m.(*eth.Attestation)
|
|
if !ok {
|
|
return false
|
|
}
|
|
|
|
// The attestation's committee index (attestation.data.index) is for the correct subnet.
|
|
if !strings.HasPrefix(originalTopic, fmt.Sprintf(format, att.Data.CommitteeIndex)) {
|
|
return false
|
|
}
|
|
|
|
// Attestation must be unaggregated.
|
|
if att.AggregationBits == nil || att.AggregationBits.Count() != 1 {
|
|
return false
|
|
}
|
|
|
|
// Attestation's slot is within ATTESTATION_PROPAGATION_SLOT_RANGE.
|
|
currentSlot := helpers.SlotsSince(s.chain.GenesisTime())
|
|
upper := att.Data.Slot + params.BeaconConfig().AttestationPropagationSlotRange
|
|
lower := att.Data.Slot
|
|
if currentSlot > upper || currentSlot < lower {
|
|
return false
|
|
}
|
|
|
|
// Verify the block being voted is in DB. The block should have passed validation if it's in the DB.
|
|
if !s.db.HasBlock(ctx, bytesutil.ToBytes32(att.Data.BeaconBlockRoot)) {
|
|
// A node doesn't have the block, it'll request from peer while saving the pending attestation to a queue.
|
|
s.savePendingAtt(ð.AggregateAttestationAndProof{Aggregate: att})
|
|
return false
|
|
}
|
|
|
|
// Attestation's signature is a valid BLS signature.
|
|
if _, err := bls.SignatureFromBytes(att.Signature); err != nil {
|
|
return false
|
|
}
|
|
|
|
msg.ValidatorData = att
|
|
|
|
return true
|
|
}
|