mirror of
https://gitlab.com/pulsechaincom/prysm-pulse.git
synced 2024-12-25 04:47:18 +00:00
66 lines
1.9 KiB
Go
66 lines
1.9 KiB
Go
package sync
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import (
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"context"
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"time"
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libp2pcore "github.com/libp2p/go-libp2p-core"
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"github.com/pkg/errors"
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"github.com/prysmaticlabs/prysm/beacon-chain/db/filters"
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pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
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ethpb "github.com/prysmaticlabs/prysm/proto/eth/v1alpha1"
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)
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// beaconBlocksRPCHandler looks up the request blocks from the database from a given start block.
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func (r *RegularSync) beaconBlocksRPCHandler(ctx context.Context, msg interface{}, stream libp2pcore.Stream) error {
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defer stream.Close()
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ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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setRPCStreamDeadlines(stream)
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m := msg.(*pb.BeaconBlocksRequest)
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startSlot := m.HeadSlot
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endSlot := startSlot + (m.Step * m.Count)
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// TODO(3147): Update this with reasonable constraints.
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if endSlot-startSlot > 1000 || m.Step == 0 {
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resp, err := r.generateErrorResponse(responseCodeInvalidRequest, "invalid range or step")
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if err != nil {
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log.WithError(err).Error("Failed to generate a response error")
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} else {
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if _, err := stream.Write(resp); err != nil {
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log.WithError(err).Errorf("Failed to write to stream")
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}
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}
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return errors.New("invalid range or step")
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}
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// TODO(3147): Only return canonical blocks.
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blks, err := r.db.Blocks(ctx, filters.NewFilter().SetStartSlot(startSlot).SetEndSlot(endSlot))
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if err != nil {
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resp, err := r.generateErrorResponse(responseCodeServerError, genericError)
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if err != nil {
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log.WithError(err).Error("Failed to generate a response error")
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} else {
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if _, err := stream.Write(resp); err != nil {
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log.WithError(err).Errorf("Failed to write to stream")
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}
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}
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return err
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}
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ret := []*ethpb.BeaconBlock{}
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for _, blk := range blks {
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if (blk.Slot-startSlot)%m.Step == 0 {
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ret = append(ret, blk)
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}
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}
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if _, err := stream.Write([]byte{responseCodeSuccess}); err != nil {
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log.WithError(err).Error("Failed to write to stream")
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}
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_, err = r.p2p.Encoding().EncodeWithLength(stream, ret)
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return err
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}
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