com.haythem.integration.Main.java Source code

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Here is the source code for com.haythem.integration.Main.java

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/*
 * 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 com.haythem.integration;

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

import org.springframework.context.support.GenericXmlApplicationContext;
import org.springframework.core.env.MapPropertySource;
import org.springframework.integration.ip.tcp.connection.AbstractServerConnectionFactory;
import org.springframework.integration.ip.util.TestingUtilities;
import org.springframework.integration.test.util.SocketUtils;

/**
 * Demonstrates the use of a gateway as an entry point into the integration flow.
 * The message generated by the gateway is sent over tcp by the outbound gateway
 * to the inbound gateway. In turn the inbound gateway sends the message to an
 * echo service and the echoed response comes back over tcp and is returned to
 * the test case for verification.
 *
 * The test uses explicit transformers to convert the byte array payloads to
 * Strings.
 *
 * Several other samples are provided as JUnit test-cases:
 *
 * <ul>
 *     <li>TcpClientServerDemoWithConversionServiceTest</li>
 *     <li>TcpServerConnectionDeserializeTest</li>
 *     <li>TcpServerCustomSerializerTest</li>
 * </ul>
 *
 * @author Gunnar Hillert
 *
 */
public final class Main {

    /**
     * Prevent instantiation.
     */
    private Main() {
    }

    /**
     * Load the Spring Integration Application Context
     *
     * @param args - command line arguments
     */
    public static void main(final String... args) {

        final Scanner scanner = new Scanner(System.in);

        System.out.println("\n========================================================="
                + "\n                                                         "
                + "\n    Welcome to the Spring Integration                    "
                + "\n          TCP-Client-Server Sample!                      "
                + "\n                                                         "
                + "\n    For more information please visit:                   "
                + "\n    http://www.springintegration.org/                    "
                + "\n                                                         "
                + "\n=========================================================");

        final GenericXmlApplicationContext context = Main.setupContext();
        final SimpleGateway gateway = context.getBean(SimpleGateway.class);
        final AbstractServerConnectionFactory crLfServer = context.getBean(AbstractServerConnectionFactory.class);

        System.out.print("Waiting for server to accept connections...");
        TestingUtilities.waitListening(crLfServer, 10000L);
        System.out.println("running.\n\n");

        System.out.println("Please enter some text and press <enter>: ");
        System.out.println("\tNote:");
        System.out.println("\t- Entering FAIL will create an exception");
        System.out.println("\t- Entering q will quit the application");
        System.out.print("\n");
        System.out.println("\t--> Please also check out the other samples, " + "that are provided as JUnit tests.");
        System.out.println("\t--> You can also connect to the server on port '" + crLfServer.getPort()
                + "' using Telnet.\n\n");

        while (true) {

            final String input = scanner.nextLine();

            if ("q".equals(input.trim())) {
                break;
            } else {
                final String result = gateway.send(input);
                System.out.println(result);
            }
        }

        System.out.println("Exiting application...bye.");
        System.exit(0);

    }

    public static GenericXmlApplicationContext setupContext() {
        final GenericXmlApplicationContext context = new GenericXmlApplicationContext();

        System.out.print("Detect open server socket...");
        int availableServerSocket = SocketUtils.findAvailableServerSocket(5678);

        final Map<String, Object> sockets = new HashMap<String, Object>();
        sockets.put("availableServerSocket", availableServerSocket);

        final MapPropertySource propertySource = new MapPropertySource("sockets", sockets);

        context.getEnvironment().getPropertySources().addLast(propertySource);

        System.out.println("using port " + context.getEnvironment().getProperty("availableServerSocket"));

        context.load("classpath:META-INF/spring/integration/tcpClientServerDemo-context.xml");
        context.registerShutdownHook();
        context.refresh();

        return context;
    }
}