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54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
package replication
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import (
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"github.com/chrislusf/seaweedfs/weed/replication/sink"
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"github.com/chrislusf/seaweedfs/weed/util"
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"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
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"github.com/chrislusf/seaweedfs/weed/replication/source"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/glog"
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)
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type Replicator struct {
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sink sink.ReplicationSink
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source *source.FilerSource
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}
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func NewReplicator(sourceConfig, sinkConfig util.Configuration) *Replicator {
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sink := &sink.FilerSink{}
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sink.Initialize(sinkConfig)
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source := &source.FilerSource{}
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source.Initialize(sourceConfig)
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if sourceConfig.GetString("grpcAddress") == sinkConfig.GetString("grpcAddress") {
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fromDir := sourceConfig.GetString("directory")
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toDir := sinkConfig.GetString("directory")
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if strings.HasPrefix(toDir, fromDir) {
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glog.Fatalf("recursive replication! source directory %s includes the sink directory %s", fromDir, toDir)
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}
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}
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sink.SetSourceFiler(source)
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return &Replicator{
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sink: sink,
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source: source,
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}
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}
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func (r *Replicator) Replicate(key string, message *filer_pb.EventNotification) error {
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if !strings.HasPrefix(key, r.source.Dir) {
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return nil
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}
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key = r.sink.GetDirectory() + key[len(r.source.Dir):]
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if message.OldEntry != nil && message.NewEntry == nil {
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return r.sink.DeleteEntry(key, message.OldEntry, message.DeleteChunks)
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}
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if message.OldEntry == nil && message.NewEntry != nil {
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return r.sink.CreateEntry(key, message.NewEntry)
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}
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return r.sink.UpdateEntry(key, message.OldEntry, message.NewEntry, message.DeleteChunks)
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}
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