org.crsh.telnet.term.AbstractTelnetTestCase.java Source code

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Here is the source code for org.crsh.telnet.term.AbstractTelnetTestCase.java

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/*
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.crsh.telnet.term;

import org.apache.commons.net.telnet.TelnetClient;
import org.crsh.TestPluginLifeCycle;
import org.crsh.plugin.SimplePluginDiscovery;
import org.crsh.telnet.TelnetPlugin;
import org.crsh.term.IOHandler;
import org.jboss.byteman.contrib.bmunit.BMUnitRunner;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.runner.RunWith;

import java.io.*;
import java.util.concurrent.atomic.AtomicInteger;

@RunWith(BMUnitRunner.class)
public abstract class AbstractTelnetTestCase extends Assert {

    /** . */
    protected TestPluginLifeCycle ctx;

    /** . */
    protected TelnetClient client;

    /** . */
    protected OutputStream out;

    /** . */
    protected InputStream in;

    /** . */
    protected IOHandler handler;

    /** . */
    private boolean running;

    /** . */
    private static final AtomicInteger PORTS = new AtomicInteger(5000);

    /** . */
    private static final int CLIENT_CONNECT_RETRY_LIMIT = 5;
    private static final long CLIENT_CONNECT_RETRY_SLEEP = 1000;

    @Before
    public final void setUp() throws Exception {

        int port = PORTS.getAndIncrement();

        //
        IOHandler handler = new IOHandler();

        //
        SimplePluginDiscovery discovery = new SimplePluginDiscovery();
        discovery.add(new TelnetPlugin());
        discovery.add(handler);

        //
        ctx = new TestPluginLifeCycle(new TelnetPlugin(), handler);
        ctx.setProperty(TelnetPlugin.TELNET_PORT, port);

        //
        ctx.start();

        //
        TelnetClient client = new TelnetClient();
        for (int retry_count = 0; retry_count < CLIENT_CONNECT_RETRY_LIMIT; retry_count++) {
            try {
                client.connect("localhost", port);
                break;
            } catch (IOException e) {
                if (retry_count < CLIENT_CONNECT_RETRY_LIMIT) {
                    Thread.sleep(CLIENT_CONNECT_RETRY_SLEEP);
                } else {
                    throw e;
                }
            }
        }

        //
        this.out = client.getOutputStream();
        this.in = client.getInputStream();
        this.handler = handler;
        this.client = client;
        this.running = true;
    }

    @After
    public final void tearDown() throws Exception {
        stop();
    }

    protected final void stop() {
        if (running) {
            ctx.stop();
            running = false;
        }
    }
}