Merge "BUG-2510: Remove all registrations when a routed rpc is closed"
[controller.git] / opendaylight / netconf / netconf-netty-util / src / main / java / org / opendaylight / controller / netconf / nettyutil / handler / NetconfMessageToXMLEncoder.java
1 /*
2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6  * and is available at http://www.eclipse.org/legal/epl-v10.html
7  */
8 package org.opendaylight.controller.netconf.nettyutil.handler;
9
10 import com.google.common.annotations.VisibleForTesting;
11 import com.google.common.base.Optional;
12 import io.netty.buffer.ByteBuf;
13 import io.netty.buffer.ByteBufOutputStream;
14 import io.netty.channel.ChannelHandlerContext;
15 import io.netty.handler.codec.MessageToByteEncoder;
16 import java.io.BufferedWriter;
17 import java.io.IOException;
18 import java.io.OutputStream;
19 import java.io.OutputStreamWriter;
20 import javax.xml.transform.TransformerException;
21 import javax.xml.transform.dom.DOMSource;
22 import javax.xml.transform.stream.StreamResult;
23 import org.opendaylight.controller.netconf.api.NetconfMessage;
24 import org.slf4j.Logger;
25 import org.slf4j.LoggerFactory;
26 import org.w3c.dom.Comment;
27
28 public class NetconfMessageToXMLEncoder extends MessageToByteEncoder<NetconfMessage> {
29     private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageToXMLEncoder.class);
30
31     private final Optional<String> clientId;
32
33     public NetconfMessageToXMLEncoder() {
34         this(Optional.<String>absent());
35     }
36
37     public NetconfMessageToXMLEncoder(final Optional<String> clientId) {
38         this.clientId = clientId;
39     }
40
41     @Override
42     @VisibleForTesting
43     public void encode(final ChannelHandlerContext ctx, final NetconfMessage msg, final ByteBuf out) throws IOException, TransformerException {
44         LOG.trace("Sent to encode : {}", msg);
45
46         if (clientId.isPresent()) {
47             Comment comment = msg.getDocument().createComment("clientId:" + clientId.get());
48             msg.getDocument().appendChild(comment);
49         }
50
51         try (OutputStream os = new ByteBufOutputStream(out)) {
52             // Wrap OutputStreamWriter with BufferedWriter as suggested in javadoc for OutputStreamWriter
53             StreamResult result = new StreamResult(new BufferedWriter(new OutputStreamWriter(os)));
54             DOMSource source = new DOMSource(msg.getDocument());
55             ThreadLocalTransformers.getPrettyTransformer().transform(source, result);
56         }
57     }
58 }

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OpenDaylight is a registered trademark of The OpenDaylight Project, Inc.
Linux Foundation and OpenDaylight are registered trademarks of the Linux Foundation.
Linux is a registered trademark of Linus Torvalds.