/**
* 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.camel.component.netty4;
import java.net.InetSocketAddress;
import java.util.List;
import io.netty.bootstrap.Bootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.DatagramPacket;
import io.netty.channel.socket.nio.NioDatagramChannel;
import io.netty.handler.codec.MessageToMessageDecoder;
import io.netty.util.CharsetUtil;
import org.apache.camel.builder.RouteBuilder;
import org.junit.Test;
public class NettyUdpConnectedSendTest extends BaseNettyTest {
private static final String SEND_STRING = "***<We all love camel>***";
private static final int SEND_COUNT = 20;
private int receivedCount;
private EventLoopGroup group;
private Bootstrap bootstrap;
public void createNettyUdpReceiver() {
group = new NioEventLoopGroup();
bootstrap = new Bootstrap();
bootstrap.group(group)
.channel(NioDatagramChannel.class)
.handler(new ChannelInitializer<Channel>() {
@Override
protected void initChannel(Channel channel) throws Exception {
channel.pipeline().addLast(new UdpHandler());
channel.pipeline().addLast(new ContentHandler());
}
}).localAddress(new InetSocketAddress(8601));
}
public void bind() {
bootstrap.bind().syncUninterruptibly().channel().closeFuture().syncUninterruptibly();
}
public void stop() {
group.shutdownGracefully();
}
@Test
public void sendConnectedUdp() throws Exception {
createNettyUdpReceiver();
Thread t = new Thread(new Runnable() {
@Override
public void run() {
bind();
}
});
t.start();
Thread.sleep(1000);
for (int i = 0; i < SEND_COUNT; ++i) {
template.sendBody("direct:in", SEND_STRING);
}
Thread.sleep(1000);
stop();
assertTrue("We should have received some datagrams", receivedCount > 0);
}
@Test
public void sendConnectedWithoutReceiver() throws Exception {
int exceptionCount = 0;
for (int i = 0; i < SEND_COUNT; ++i) {
try {
template.sendBody("direct:in", SEND_STRING);
} catch (Exception ex) {
++exceptionCount;
}
}
assertTrue("There should at least one exception because port is unreachable", exceptionCount > 0);
}
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:in").to("netty4:udp://localhost:8601?sync=false&textline=true");
}
};
}
public class UdpHandler extends MessageToMessageDecoder<DatagramPacket> {
@Override
protected void decode(ChannelHandlerContext channelHandlerContext, DatagramPacket datagramPacket, List<Object> objects) throws Exception {
objects.add(datagramPacket.content().toString(CharsetUtil.UTF_8));
}
}
public class ContentHandler extends SimpleChannelInboundHandler<String> {
@Override
protected void channelRead0(ChannelHandlerContext channelHandlerContext, String s) throws Exception {
receivedCount++;
assertEquals(SEND_STRING, s);
}
}
}