netconf/netconf-impl/src/test/java/org/opendaylight/netconf/impl/MessageParserTest.java

   1 /*
   2  * Copyright (c) 2013 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
   9 package org.opendaylight.netconf.impl;
  10
  11 import static org.custommonkey.xmlunit.XMLAssert.assertXMLEqual;
  12 import static org.junit.Assert.assertArrayEquals;
  13 import static org.junit.Assert.assertEquals;
  14 import static org.junit.Assert.assertFalse;
  15 import static org.junit.Assert.assertNotNull;
  16 import static org.junit.Assert.assertTrue;
  17
  18 import com.google.common.base.Charsets;
  19 import io.netty.buffer.ByteBuf;
  20 import io.netty.buffer.Unpooled;
  21 import io.netty.channel.embedded.EmbeddedChannel;
  22 import java.nio.ByteBuffer;
  23 import java.util.Queue;
  24 import org.junit.Before;
  25 import org.junit.Test;
  26 import org.opendaylight.netconf.api.NetconfMessage;
  27 import org.opendaylight.netconf.nettyutil.handler.ChunkedFramingMechanismEncoder;
  28 import org.opendaylight.netconf.nettyutil.handler.FramingMechanismHandlerFactory;
  29 import org.opendaylight.netconf.nettyutil.handler.NetconfChunkAggregator;
  30 import org.opendaylight.netconf.nettyutil.handler.NetconfEOMAggregator;
  31 import org.opendaylight.netconf.nettyutil.handler.NetconfMessageToXMLEncoder;
  32 import org.opendaylight.netconf.nettyutil.handler.NetconfXMLToMessageDecoder;
  33 import org.opendaylight.netconf.util.messages.FramingMechanism;
  34 import org.opendaylight.netconf.util.messages.NetconfMessageConstants;
  35 import org.opendaylight.netconf.util.test.XmlFileLoader;
  36
  37 public class MessageParserTest {
  38
  39     private NetconfMessage msg;
  40
  41     @Before
  42     public void setUp() throws Exception {
  43         this.msg = XmlFileLoader.xmlFileToNetconfMessage("netconfMessages/getConfig.xml");
  44     }
  45
  46     @Test
  47     public void testChunkedFramingMechanismOnPipeline() throws Exception {
  48         EmbeddedChannel testChunkChannel = new EmbeddedChannel(
  49                 FramingMechanismHandlerFactory.createHandler(FramingMechanism.CHUNK),
  50                 new NetconfMessageToXMLEncoder(),
  51
  52                 new NetconfChunkAggregator(),
  53                 new NetconfXMLToMessageDecoder());
  54
  55         testChunkChannel.writeOutbound(this.msg);
  56         Queue<Object> messages = testChunkChannel.outboundMessages();
  57         assertFalse(messages.isEmpty());
  58
  59         final NetconfMessageToXMLEncoder enc = new NetconfMessageToXMLEncoder();
  60         final ByteBuf out = Unpooled.buffer();
  61         enc.encode(null, msg, out);
  62         int msgLength = out.readableBytes();
  63
  64         int chunkCount = msgLength / ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE;
  65         if ((msgLength % ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE) != 0) {
  66             chunkCount++;
  67         }
  68         for (int i = 1; i <= chunkCount; i++) {
  69             ByteBuf recievedOutbound = (ByteBuf) messages.poll();
  70             int exptHeaderLength = ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE;
  71             if (i == chunkCount) {
  72                 exptHeaderLength = msgLength - (ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE * (i - 1));
  73                 byte[] eom = new byte[NetconfMessageConstants.END_OF_CHUNK.length];
  74                 recievedOutbound.getBytes(recievedOutbound.readableBytes() - NetconfMessageConstants.END_OF_CHUNK.length,
  75                         eom);
  76                 assertArrayEquals(NetconfMessageConstants.END_OF_CHUNK, eom);
  77             }
  78
  79             byte[] header = new byte[String.valueOf(exptHeaderLength).length()
  80                     + NetconfMessageConstants.MIN_HEADER_LENGTH - 1];
  81             recievedOutbound.getBytes(0, header);
  82             assertEquals(exptHeaderLength, getHeaderLength(header));
  83
  84             testChunkChannel.writeInbound(recievedOutbound);
  85         }
  86         assertTrue(messages.isEmpty());
  87
  88         NetconfMessage receivedMessage = (NetconfMessage) testChunkChannel.readInbound();
  89         assertNotNull(receivedMessage);
  90         assertXMLEqual(this.msg.getDocument(), receivedMessage.getDocument());
  91     }
  92
  93     @Test
  94     public void testEOMFramingMechanismOnPipeline() throws Exception {
  95         EmbeddedChannel testChunkChannel = new EmbeddedChannel(
  96                 FramingMechanismHandlerFactory.createHandler(FramingMechanism.EOM),
  97                 new NetconfMessageToXMLEncoder(), new NetconfEOMAggregator(), new NetconfXMLToMessageDecoder());
  98
  99         testChunkChannel.writeOutbound(this.msg);
 100         ByteBuf recievedOutbound = (ByteBuf) testChunkChannel.readOutbound();
 101
 102         byte[] eom = new byte[NetconfMessageConstants.END_OF_MESSAGE.length];
 103         recievedOutbound.getBytes(recievedOutbound.readableBytes() - NetconfMessageConstants.END_OF_MESSAGE.length, eom);
 104         assertArrayEquals(NetconfMessageConstants.END_OF_MESSAGE, eom);
 105
 106         testChunkChannel.writeInbound(recievedOutbound);
 107         NetconfMessage receivedMessage = (NetconfMessage) testChunkChannel.readInbound();
 108         assertNotNull(receivedMessage);
 109         assertXMLEqual(this.msg.getDocument(), receivedMessage.getDocument());
 110     }
 111
 112     private static long getHeaderLength(byte[] bytes) {
 113         byte[] HEADER_START = new byte[] { (byte) 0x0a, (byte) 0x23 };
 114         return Long.parseLong(Charsets.US_ASCII.decode(
 115                 ByteBuffer.wrap(bytes, HEADER_START.length, bytes.length - HEADER_START.length - 1)).toString());
 116     }
 117 }