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 io.netty.buffer.ByteBuf;
  19 import io.netty.buffer.Unpooled;
  20 import io.netty.channel.embedded.EmbeddedChannel;
  21 import java.nio.ByteBuffer;
  22 import java.nio.charset.StandardCharsets;
  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
  69         byte[] endOfChunkBytes = NetconfMessageConstants.END_OF_CHUNK.getBytes(StandardCharsets.UTF_8);
  70         for (int i = 1; i <= chunkCount; i++) {
  71             ByteBuf recievedOutbound = (ByteBuf) messages.poll();
  72             int exptHeaderLength = ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE;
  73             if (i == chunkCount) {
  74                 exptHeaderLength = msgLength - ChunkedFramingMechanismEncoder.DEFAULT_CHUNK_SIZE * (i - 1);
  75                 byte[] eom = new byte[endOfChunkBytes.length];
  76                 recievedOutbound.getBytes(recievedOutbound.readableBytes() - endOfChunkBytes.length, eom);
  77                 assertArrayEquals(endOfChunkBytes, eom);
  78             }
  79
  80             byte[] header = new byte[String.valueOf(exptHeaderLength).length()
  81                     + NetconfMessageConstants.MIN_HEADER_LENGTH - 1];
  82             recievedOutbound.getBytes(0, header);
  83             assertEquals(exptHeaderLength, getHeaderLength(header));
  84
  85             testChunkChannel.writeInbound(recievedOutbound);
  86         }
  87         assertTrue(messages.isEmpty());
  88
  89         NetconfMessage receivedMessage = testChunkChannel.readInbound();
  90         assertNotNull(receivedMessage);
  91         assertXMLEqual(this.msg.getDocument(), receivedMessage.getDocument());
  92     }
  93
  94     @Test
  95     public void testEOMFramingMechanismOnPipeline() throws Exception {
  96         EmbeddedChannel testChunkChannel = new EmbeddedChannel(
  97                 FramingMechanismHandlerFactory.createHandler(FramingMechanism.EOM),
  98                 new NetconfMessageToXMLEncoder(), new NetconfEOMAggregator(), new NetconfXMLToMessageDecoder());
  99
 100         testChunkChannel.writeOutbound(this.msg);
 101         ByteBuf recievedOutbound = testChunkChannel.readOutbound();
 102
 103         byte[] endOfMsgBytes = NetconfMessageConstants.END_OF_MESSAGE.getBytes(StandardCharsets.UTF_8);
 104         byte[] eom = new byte[endOfMsgBytes.length];
 105         recievedOutbound.getBytes(recievedOutbound.readableBytes() - endOfMsgBytes.length, eom);
 106         assertArrayEquals(endOfMsgBytes, eom);
 107
 108         testChunkChannel.writeInbound(recievedOutbound);
 109         NetconfMessage receivedMessage = testChunkChannel.readInbound();
 110         assertNotNull(receivedMessage);
 111         assertXMLEqual(this.msg.getDocument(), receivedMessage.getDocument());
 112     }
 113
 114     private static long getHeaderLength(byte[] bytes) {
 115         byte[] headerStart = new byte[]{(byte) 0x0a, (byte) 0x23};
 116         return Long.parseLong(StandardCharsets.US_ASCII.decode(
 117                 ByteBuffer.wrap(bytes, headerStart.length, bytes.length - headerStart.length - 1)).toString());
 118     }
 119 }