/
rpc_beacon_blocks_by_root.go
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/
rpc_beacon_blocks_by_root.go
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package sync
import (
"context"
libp2pcore "github.com/libp2p/go-libp2p/core"
"github.com/libp2p/go-libp2p/core/peer"
"github.com/pkg/errors"
"github.com/theQRL/qrysm/v4/beacon-chain/execution"
"github.com/theQRL/qrysm/v4/beacon-chain/p2p/types"
"github.com/theQRL/qrysm/v4/config/params"
"github.com/theQRL/qrysm/v4/consensus-types/blocks"
"github.com/theQRL/qrysm/v4/consensus-types/interfaces"
zond "github.com/theQRL/qrysm/v4/proto/prysm/v1alpha1"
"github.com/theQRL/qrysm/v4/runtime/version"
)
// sendRecentBeaconBlocksRequest sends a recent beacon blocks request to a peer to get
// those corresponding blocks from that peer.
func (s *Service) sendRecentBeaconBlocksRequest(ctx context.Context, blockRoots *types.BeaconBlockByRootsReq, id peer.ID) error {
ctx, cancel := context.WithTimeout(ctx, respTimeout)
defer cancel()
blks, err := SendBeaconBlocksByRootRequest(ctx, s.cfg.clock, s.cfg.p2p, id, blockRoots, func(blk interfaces.ReadOnlySignedBeaconBlock) error {
blkRoot, err := blk.Block().HashTreeRoot()
if err != nil {
return err
}
s.pendingQueueLock.Lock()
defer s.pendingQueueLock.Unlock()
if err := s.insertBlockToPendingQueue(blk.Block().Slot(), blk, blkRoot); err != nil {
return err
}
return nil
})
for _, blk := range blks {
// Skip blocks before deneb because they have no blob.
if blk.Version() < version.Deneb {
continue
}
blkRoot, err := blk.Block().HashTreeRoot()
if err != nil {
return err
}
if err := s.requestPendingBlobs(ctx, blk.Block(), blkRoot[:], id); err != nil {
return err
}
}
return err
}
// beaconBlocksRootRPCHandler looks up the request blocks from the database from the given block roots.
func (s *Service) beaconBlocksRootRPCHandler(ctx context.Context, msg interface{}, stream libp2pcore.Stream) error {
ctx, cancel := context.WithTimeout(ctx, ttfbTimeout)
defer cancel()
SetRPCStreamDeadlines(stream)
log := log.WithField("handler", "beacon_blocks_by_root")
rawMsg, ok := msg.(*types.BeaconBlockByRootsReq)
if !ok {
return errors.New("message is not type BeaconBlockByRootsReq")
}
blockRoots := *rawMsg
if err := s.rateLimiter.validateRequest(stream, uint64(len(blockRoots))); err != nil {
return err
}
if len(blockRoots) == 0 {
// Add to rate limiter in the event no
// roots are requested.
s.rateLimiter.add(stream, 1)
s.writeErrorResponseToStream(responseCodeInvalidRequest, "no block roots provided in request", stream)
return errors.New("no block roots provided")
}
if uint64(len(blockRoots)) > params.BeaconNetworkConfig().MaxRequestBlocks {
s.cfg.p2p.Peers().Scorers().BadResponsesScorer().Increment(stream.Conn().RemotePeer())
s.writeErrorResponseToStream(responseCodeInvalidRequest, "requested more than the max block limit", stream)
return errors.New("requested more than the max block limit")
}
s.rateLimiter.add(stream, int64(len(blockRoots)))
for _, root := range blockRoots {
blk, err := s.cfg.beaconDB.Block(ctx, root)
if err != nil {
log.WithError(err).Debug("Could not fetch block")
s.writeErrorResponseToStream(responseCodeServerError, types.ErrGeneric.Error(), stream)
return err
}
if err := blocks.BeaconBlockIsNil(blk); err != nil {
continue
}
if blk.Block().IsBlinded() {
blk, err = s.cfg.executionPayloadReconstructor.ReconstructFullBlock(ctx, blk)
if err != nil {
if errors.Is(err, execution.EmptyBlockHash) {
log.WithError(err).Warn("Could not reconstruct block from header with syncing execution client. Waiting to complete syncing")
} else {
log.WithError(err).Error("Could not get reconstruct full block from blinded body")
}
s.writeErrorResponseToStream(responseCodeServerError, types.ErrGeneric.Error(), stream)
return err
}
}
if err := s.chunkBlockWriter(stream, blk); err != nil {
return err
}
}
closeStream(stream, log)
return nil
}
func (s *Service) requestPendingBlobs(ctx context.Context, b interfaces.ReadOnlyBeaconBlock, br []byte, id peer.ID) error {
// Block before deneb has no blob.
if b.Version() < version.Deneb {
return nil
}
c, err := b.Body().BlobKzgCommitments()
if err != nil {
return err
}
// No op if the block has no blob commitments.
if len(c) == 0 {
return nil
}
// Build request for blob sidecars.
blobId := make([]*zond.BlobIdentifier, len(c))
for i := range c {
blobId[i] = &zond.BlobIdentifier{Index: uint64(i), BlockRoot: br}
}
ctxByte, err := ContextByteVersionsForValRoot(s.cfg.chain.GenesisValidatorsRoot())
if err != nil {
return err
}
req := types.BlobSidecarsByRootReq(blobId)
// Send request to a random peer.
blobSidecars, err := SendBlobSidecarByRoot(ctx, s.cfg.clock, s.cfg.p2p, id, ctxByte, &req)
if err != nil {
return err
}
for _, sidecar := range blobSidecars {
log.WithFields(blobFields(sidecar)).Debug("Received blob sidecar gossip RPC")
}
return s.cfg.beaconDB.SaveBlobSidecar(ctx, blobSidecars)
}