| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.airavata.mft.core.bufferedImpl; |
| |
| import org.apache.airavata.mft.core.api.*; |
| |
| import java.io.IOException; |
| import java.nio.channels.FileChannel; |
| import java.nio.channels.ReadableByteChannel; |
| import java.nio.channels.WritableByteChannel; |
| |
| /** |
| * This class wire the input stream and output stream based on the Channel type. |
| * If either source or destination channels are FileChannel then wire using |
| * zero copy technique of FileChannel class. |
| * Other wise use DirectByteBuffers to copy data from source to destination. |
| */ |
| public class PassthroughMediator implements Mediator { |
| |
| @Override |
| public void mediate(ConnectorChannel src, ConnectorChannel dst, CompletionCallback callback) { |
| ReadableByteChannel rChannel = (ReadableByteChannel) src.getChannel(); |
| WritableByteChannel dChannel = (WritableByteChannel) dst.getChannel(); |
| try { |
| if (rChannel instanceof FileChannel) { |
| ChannelUtils.transferTo(dChannel, (FileChannel) src); |
| } else if (dChannel instanceof FileChannel) { |
| ChannelUtils.transferFrom(rChannel, (FileChannel) dst); |
| } else { |
| ChannelUtils.copyData(rChannel, dChannel); |
| } |
| |
| |
| Object obj = dst.getChannelAttribute(Constants.CONNECTOR); |
| if (obj != null && obj instanceof SinkConnector) { |
| SinkConnector connector = (SinkConnector) obj; |
| boolean success = connector.verifyUpload(dst); |
| if (success) { |
| callback.onComplete("Successfully uploaded", null); |
| } else { |
| String msg = "Upload Failed"; |
| ConnectorException connectorException = new ConnectorException(msg, null); |
| callback.onComplete("Upload failed ", connectorException); |
| } |
| } |
| |
| } catch (IOException e) { |
| String msg = "Upload Failed"; |
| ConnectorException connectorException = new ConnectorException(msg, e); |
| callback.onComplete("Upload failed ", connectorException); |
| } finally { |
| Connector sourceConnector = (Connector) src.getChannelAttribute(Constants.CONNECTOR); |
| Connector sinkConnector = (Connector) dst.getChannelAttribute(Constants.CONNECTOR); |
| try { |
| sourceConnector.closeChannel(src); |
| sinkConnector.closeChannel(dst); |
| } catch (Exception ex) { |
| String msg = "Error occurred while closing channels"; |
| ConnectorException connectorException = new ConnectorException(msg, ex); |
| callback.onComplete(msg, connectorException); |
| } |
| } |
| |
| } |
| } |