mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 21:07:18 +00:00
73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
package sync
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import (
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"context"
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"fmt"
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"time"
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"github.com/gogo/protobuf/proto"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/go-ssz"
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"github.com/prysmaticlabs/prysm/beacon-chain/p2p"
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ethpb "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1"
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"github.com/prysmaticlabs/prysm/shared/bytesutil"
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"github.com/prysmaticlabs/prysm/shared/traceutil"
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"go.opencensus.io/trace"
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)
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var errPointsToBlockNotInDatabase = errors.New("attestation points to a block which is not in the database")
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// validateBeaconAttestation validates that the block being voted for passes validation before forwarding to the
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// network.
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func (r *RegularSync) validateBeaconAttestation(ctx context.Context, msg proto.Message, p p2p.Broadcaster, fromSelf bool) (bool, error) {
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// Attestation processing requires the target block to be present in the database, so we'll skip
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// validating or processing attestations until fully synced.
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if r.initialSync.Syncing() {
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return false, nil
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}
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ctx, span := trace.StartSpan(ctx, "sync.validateBeaconAttestation")
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defer span.End()
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// TODO(1332): Add blocks.VerifyAttestation before processing further.
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// Discussion: https://github.com/ethereum/eth2.0-specs/issues/1332
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att := msg.(*ethpb.Attestation)
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attRoot, err := ssz.HashTreeRoot(att)
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if err != nil {
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return false, errors.Wrap(err, "could not hash attestation")
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}
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span.AddAttributes(
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trace.StringAttribute("blockRoot", fmt.Sprintf("%#x", att.Data.BeaconBlockRoot)),
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trace.StringAttribute("attRoot", fmt.Sprintf("%#x", attRoot)),
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)
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// Only valid blocks are saved in the database.
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if !r.db.HasBlock(ctx, bytesutil.ToBytes32(att.Data.BeaconBlockRoot)) {
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log.WithField(
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"blockRoot",
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fmt.Sprintf("%#x", att.Data.BeaconBlockRoot),
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).WithError(errPointsToBlockNotInDatabase).Debug("Ignored incoming attestation that points to a block which is not in the database")
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traceutil.AnnotateError(span, errPointsToBlockNotInDatabase)
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return false, nil
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}
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if recentlySeenRoots.Get(string(attRoot[:])) != nil {
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return false, nil
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}
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recentlySeenRoots.Set(string(attRoot[:]), true /*value*/, 365*24*time.Hour /*TTL*/)
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if fromSelf {
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return false, nil
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}
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if err := p.Broadcast(ctx, msg); err != nil {
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log.WithError(err).Error("Failed to broadcast message")
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traceutil.AnnotateError(span, err)
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}
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return true, nil
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}
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