/*
* Copyright 2002-2012 the original author or authors.
*
* Licensed 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.springframework.integration.samples.tcpclientserver;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.net.Socket;
import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.messaging.Message;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.SubscribableChannel;
import org.springframework.integration.handler.AbstractReplyProducingMessageHandler;
import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
import org.springframework.integration.ip.util.TestingUtilities;
import org.springframework.integration.samples.tcpclientserver.support.CustomTestContextLoader;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
/**
* Some use cases may dictate you needing to create your own stream handling serializers
* and deserializers. This sample shows a custom serializer/deserializer being used with
* the Java socket API on the front end (client) and the Spring Integration TCP inbound
* gateway with the custom serializer/deserializers.
*
* @author Christian Posta
* @author Gunnar Hillert
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(loader=CustomTestContextLoader.class,
locations = {"/META-INF/spring/integration/tcpServerCustomSerialize-context.xml"})
@DirtiesContext
public class TcpServerCustomSerializerTest {
private static final Logger LOGGER = Logger.getLogger(TcpServerCustomSerializerTest.class);
@Autowired
@Qualifier("incomingServerChannel")
MessageChannel incomingServerChannel;
@Value("${availableServerSocket}")
int availableServerSocket;
@Autowired
AbstractServerConnectionFactory serverConnectionFactory;
@Before
public void setup() {
TestingUtilities.waitListening(this.serverConnectionFactory, 10000L);
}
@Test
public void testHappyPath() {
// add a listener to this channel, otherwise there is not one defined
// the reason we use a listener here is so we can assert truths on the
// message and/or payload
SubscribableChannel channel = (SubscribableChannel) incomingServerChannel;
channel.subscribe(new AbstractReplyProducingMessageHandler(){
@Override
protected Object handleRequestMessage(Message<?> requestMessage) {
CustomOrder payload = (CustomOrder) requestMessage.getPayload();
// we assert during the processing of the messaging that the
// payload is just the content we wanted to send without the
// framing bytes (STX/ETX)
assertEquals(123, payload.getNumber());
assertEquals("PINGPONG02", payload.getSender());
assertEquals("You got it to work!", payload.getMessage());
return requestMessage;
}
});
String sourceMessage = "123PINGPONG02000019You got it to work!";
// use the java socket API to make the connection to the server
Socket socket = null;
Writer out = null;
BufferedReader in = null;
try {
socket = new Socket("localhost", availableServerSocket);
out = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
out.write(sourceMessage);
out.flush();
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
StringBuffer str = new StringBuffer();
int c;
while ((c = in.read()) != -1) {
str.append((char) c);
}
String response = str.toString();
assertEquals(sourceMessage, response);
} catch (IOException e) {
LOGGER.error(e.getMessage(), e);
fail(String.format("Test (port: %s) ended with an exception: %s", availableServerSocket, e.getMessage()));
} finally {
try {
socket.close();
out.close();
in.close();
} catch (Exception e) {
// swallow exception
}
}
}
}