mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2025-01-01 15:57:39 +00:00
42 lines
1.3 KiB
Go
42 lines
1.3 KiB
Go
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package sync
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import (
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"context"
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"encoding/base64"
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"time"
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"github.com/gogo/protobuf/proto"
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"github.com/karlseguin/ccache"
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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/bls"
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)
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// recentlySeenBlockRoots cache with max size of ~3Mib
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var recentlySeenRoots = ccache.New(ccache.Configure().MaxSize(100000))
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// validateBeaconBlockPubSub checks that the incoming block has a valid BLS signature.
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// Blocks that have already been seen are ignored. If the BLS signature is any valid signature,
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// this method rebroadcasts the message.
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func (r *RegularSync) validateBeaconBlockPubSub(ctx context.Context, msg proto.Message, p p2p.Broadcaster) bool {
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m := msg.(*ethpb.BeaconBlock)
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blockRoot, err := ssz.SigningRoot(m)
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if err != nil {
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log.WithField("validate", "beacon block").WithError(err).Error("Failed to get signing root of block")
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return false
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}
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b64BlockRoot := base64.StdEncoding.EncodeToString(blockRoot[:])
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if recentlySeenRoots.Get(b64BlockRoot) != nil || r.db.HasBlock(ctx, blockRoot) {
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return false
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}
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recentlySeenRoots.Set(b64BlockRoot, true /*value*/, 365*24*time.Hour /*TTL*/)
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_, err = bls.SignatureFromBytes(m.Signature)
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if err == nil {
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p.Broadcast(ctx, m)
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}
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return err == nil
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}
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