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package storage
import ( "context" "fmt"
"github.com/joeslay/seaweedfs/weed/glog" "github.com/joeslay/seaweedfs/weed/operation" "github.com/joeslay/seaweedfs/weed/pb/volume_server_pb" "github.com/joeslay/seaweedfs/weed/storage/erasure_coding" "github.com/joeslay/seaweedfs/weed/storage/needle" "github.com/joeslay/seaweedfs/weed/storage/types" )
func (s *Store) DeleteEcShardNeedle(ctx context.Context, ecVolume *erasure_coding.EcVolume, n *needle.Needle, cookie types.Cookie) (int64, error) {
count, err := s.ReadEcShardNeedle(ctx, ecVolume.VolumeId, n)
if err != nil { return 0, err }
if cookie != n.Cookie { return 0, fmt.Errorf("unexpected cookie %x", cookie) }
if err = s.doDeleteNeedleFromAtLeastOneRemoteEcShards(ctx, ecVolume, n.Id); err != nil { return 0, err }
return int64(count), nil
}
func (s *Store) doDeleteNeedleFromAtLeastOneRemoteEcShards(ctx context.Context, ecVolume *erasure_coding.EcVolume, needleId types.NeedleId) error {
_, _, intervals, err := ecVolume.LocateEcShardNeedle(needleId, ecVolume.Version)
if len(intervals) == 0 { return erasure_coding.NotFoundError }
shardId, _ := intervals[0].ToShardIdAndOffset(erasure_coding.ErasureCodingLargeBlockSize, erasure_coding.ErasureCodingSmallBlockSize)
hasDeletionSuccess := false err = s.doDeleteNeedleFromRemoteEcShardServers(ctx, shardId, ecVolume, needleId) if err == nil { hasDeletionSuccess = true }
for shardId = erasure_coding.DataShardsCount; shardId < erasure_coding.TotalShardsCount; shardId++ { if parityDeletionError := s.doDeleteNeedleFromRemoteEcShardServers(ctx, shardId, ecVolume, needleId); parityDeletionError == nil { hasDeletionSuccess = true } }
if hasDeletionSuccess { return nil }
return err
}
func (s *Store) doDeleteNeedleFromRemoteEcShardServers(ctx context.Context, shardId erasure_coding.ShardId, ecVolume *erasure_coding.EcVolume, needleId types.NeedleId) error {
ecVolume.ShardLocationsLock.RLock() sourceDataNodes, hasShardLocations := ecVolume.ShardLocations[shardId] ecVolume.ShardLocationsLock.RUnlock()
if !hasShardLocations { return fmt.Errorf("ec shard %d.%d not located", ecVolume.VolumeId, shardId) }
for _, sourceDataNode := range sourceDataNodes { glog.V(4).Infof("delete from remote ec shard %d.%d from %s", ecVolume.VolumeId, shardId, sourceDataNode) err := s.doDeleteNeedleFromRemoteEcShard(ctx, sourceDataNode, ecVolume.VolumeId, ecVolume.Collection, ecVolume.Version, needleId) if err != nil { return err } glog.V(1).Infof("delete from remote ec shard %d.%d from %s: %v", ecVolume.VolumeId, shardId, sourceDataNode, err) }
return nil
}
func (s *Store) doDeleteNeedleFromRemoteEcShard(ctx context.Context, sourceDataNode string, vid needle.VolumeId, collection string, version needle.Version, needleId types.NeedleId) error {
return operation.WithVolumeServerClient(sourceDataNode, s.grpcDialOption, func(client volume_server_pb.VolumeServerClient) error {
// copy data slice
_, err := client.VolumeEcBlobDelete(ctx, &volume_server_pb.VolumeEcBlobDeleteRequest{ VolumeId: uint32(vid), Collection: collection, FileKey: uint64(needleId), Version: uint32(version), }) if err != nil { return fmt.Errorf("failed to delete from ec shard %d on %s: %v", vid, sourceDataNode, err) } return nil })
}
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