seaweedfs/weed/replication/replicator.go
2018-09-23 00:40:36 -07:00

47 lines
1.2 KiB
Go

package replication
import (
"strings"
"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
"github.com/chrislusf/seaweedfs/weed/replication/sink"
"github.com/chrislusf/seaweedfs/weed/replication/sink/filersink"
"github.com/chrislusf/seaweedfs/weed/replication/source"
"github.com/chrislusf/seaweedfs/weed/util"
)
type Replicator struct {
sink sink.ReplicationSink
source *source.FilerSource
}
func NewReplicator(sourceConfig, sinkConfig util.Configuration) *Replicator {
sink := &filersink.FilerSink{}
sink.Initialize(sinkConfig)
source := &source.FilerSource{}
source.Initialize(sourceConfig)
sink.SetSourceFiler(source)
return &Replicator{
sink: sink,
source: source,
}
}
func (r *Replicator) Replicate(key string, message *filer_pb.EventNotification) error {
if !strings.HasPrefix(key, r.source.Dir) {
return nil
}
key = r.sink.GetSinkToDirectory() + key[len(r.source.Dir):]
if message.OldEntry != nil && message.NewEntry == nil {
return r.sink.DeleteEntry(key, message.OldEntry, message.DeleteChunks)
}
if message.OldEntry == nil && message.NewEntry != nil {
return r.sink.CreateEntry(key, message.NewEntry)
}
return r.sink.UpdateEntry(key, message.OldEntry, message.NewEntry, message.DeleteChunks)
}