2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.netconf.nettyutil.handler;
10 import com.google.common.base.Preconditions;
11 import io.netty.buffer.ByteBuf;
12 import io.netty.buffer.ByteBufOutputStream;
13 import io.netty.channel.ChannelHandlerContext;
14 import io.netty.handler.codec.MessageToByteEncoder;
15 import java.io.OutputStream;
16 import javax.xml.transform.Transformer;
17 import javax.xml.transform.dom.DOMSource;
18 import javax.xml.transform.sax.SAXResult;
19 import javax.xml.transform.sax.SAXTransformerFactory;
20 import org.opendaylight.controller.netconf.api.NetconfMessage;
21 import org.opendaylight.controller.netconf.util.xml.XmlUtil;
22 import org.openexi.sax.Transmogrifier;
23 import org.slf4j.Logger;
24 import org.slf4j.LoggerFactory;
26 public final class NetconfMessageToEXIEncoder extends MessageToByteEncoder<NetconfMessage> {
28 private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageToEXIEncoder.class);
30 private static final SAXTransformerFactory saxTransformerFactory = (SAXTransformerFactory)SAXTransformerFactory.newInstance();
31 private final NetconfEXICodec codec;
33 public NetconfMessageToEXIEncoder(final NetconfEXICodec codec) {
34 this.codec = Preconditions.checkNotNull(codec);
38 protected void encode(final ChannelHandlerContext ctx, final NetconfMessage msg, final ByteBuf out) throws Exception {
39 LOG.trace("Sent to encode : {}", XmlUtil.toString(msg.getDocument()));
41 try (final OutputStream os = new ByteBufOutputStream(out)) {
42 final Transmogrifier transmogrifier = codec.getTransmogrifier();
43 transmogrifier.setOutputStream(os);
45 final Transformer transformer = saxTransformerFactory.newTransformer();
46 transformer.transform(new DOMSource(msg.getDocument()), new SAXResult(transmogrifier.getSAXTransmogrifier()));