cloud drive: filer.remote.sync supports remove folder

weed/command/filer_remote_sync.go

@@ -164,6 +164,10 @@ func followUpdatesAndUploadToRemote(option *RemoteSyncOptions, filerSource *sour
 		if message.OldEntry != nil && message.NewEntry == nil {
 			glog.V(2).Infof("delete: %+v", resp)
 			dest := toRemoteStorageLocation(util.FullPath(mountedDir), util.NewFullPath(resp.Directory, message.OldEntry.Name), remoteStorageMountLocation)
+			if message.OldEntry.IsDirectory {
+				glog.V(0).Infof("rmdir  %s", remote_storage.FormatLocation(dest))
+				return client.RemoveDirectory(dest)
+			}
 			glog.V(0).Infof("delete %s", remote_storage.FormatLocation(dest))
 			return client.DeleteFile(dest)
 		}

weed/remote_storage/azure/azure_storage_client.go

@@ -128,6 +128,10 @@ func (az *azureRemoteStorageClient) WriteDirectory(loc *remote_pb.RemoteStorageL
 	return nil
 }
 
+func (az *azureRemoteStorageClient) RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error) {
+	return nil
+}
+
 func (az *azureRemoteStorageClient) WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error) {
 
 	key := loc.Path[1:]

weed/remote_storage/gcs/gcs_storage_client.go

@@ -111,6 +111,10 @@ func (gcs *gcsRemoteStorageClient) WriteDirectory(loc *remote_pb.RemoteStorageLo
 	return nil
 }
 
+func (gcs *gcsRemoteStorageClient) RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error) {
+	return nil
+}
+
 func (gcs *gcsRemoteStorageClient) WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error) {
 
 	key := loc.Path[1:]

weed/remote_storage/hdfs/hdfs_storage_client.go

@@ -104,6 +104,10 @@ func (c *hdfsRemoteStorageClient) WriteDirectory(loc *remote_pb.RemoteStorageLoc
 	return c.client.MkdirAll(loc.Path, os.FileMode(entry.Attributes.FileMode))
 }
 
+func (c *hdfsRemoteStorageClient) RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error) {
+	return c.client.RemoveAll(loc.Path)
+}
+
 func (c *hdfsRemoteStorageClient) WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error) {
 
 	dirname := path.Dir(loc.Path)

weed/remote_storage/remote_storage.go

@@ -65,6 +65,7 @@ type RemoteStorageClient interface {
 	Traverse(loc *remote_pb.RemoteStorageLocation, visitFn VisitFunc) error
 	ReadFile(loc *remote_pb.RemoteStorageLocation, offset int64, size int64) (data []byte, err error)
 	WriteDirectory(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry) (err error)
+	RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error)
 	WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error)
 	UpdateFileMetadata(loc *remote_pb.RemoteStorageLocation, oldEntry *filer_pb.Entry, newEntry *filer_pb.Entry) (err error)
 	DeleteFile(loc *remote_pb.RemoteStorageLocation) (err error)

weed/remote_storage/s3/s3_storage_client.go

@@ -124,6 +124,10 @@ func (s *s3RemoteStorageClient) WriteDirectory(loc *remote_pb.RemoteStorageLocat
 	return nil
 }
 
+func (s *s3RemoteStorageClient) RemoveDirectory(loc *remote_pb.RemoteStorageLocation) (err error) {
+	return nil
+}
+
 func (s *s3RemoteStorageClient) WriteFile(loc *remote_pb.RemoteStorageLocation, entry *filer_pb.Entry, reader io.Reader) (remoteEntry *filer_pb.RemoteEntry, err error) {
 
 	fileSize := int64(filer.FileSize(entry))