prysm-pulse/beacon-chain/db/kv/validated_checkpoint.go

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package kv
import (
"context"
ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
bolt "go.etcd.io/bbolt"
"go.opencensus.io/trace"
)
// LastValidatedCheckpoint returns the latest fully validated checkpoint in beacon chain.
func (s *Store) LastValidatedCheckpoint(ctx context.Context) (*ethpb.Checkpoint, error) {
ctx, span := trace.StartSpan(ctx, "BeaconDB.LastValidatedCheckpoint")
defer span.End()
var checkpoint *ethpb.Checkpoint
err := s.db.View(func(tx *bolt.Tx) error {
bkt := tx.Bucket(checkpointBucket)
enc := bkt.Get(lastValidatedCheckpointKey)
if enc == nil {
var finErr error
checkpoint, finErr = s.FinalizedCheckpoint(ctx)
return finErr
}
checkpoint = &ethpb.Checkpoint{}
return decode(ctx, enc, checkpoint)
})
return checkpoint, err
}
// SaveLastValidatedCheckpoint saves the last validated checkpoint in beacon chain.
func (s *Store) SaveLastValidatedCheckpoint(ctx context.Context, checkpoint *ethpb.Checkpoint) error {
ctx, span := trace.StartSpan(ctx, "BeaconDB.SaveLastValidatedCheckpoint")
defer span.End()
return s.saveCheckpoint(ctx, lastValidatedCheckpointKey, checkpoint)
}