/* 
 * ========================================================================
 * 
 * Copyright 2005 Vincent Massol.
 *
 * 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.codehaus.cargo.maven2;

import org.apache.maven.plugin.MojoExecutionException;
import org.codehaus.cargo.container.Container;
import org.codehaus.cargo.container.LocalContainer;

/**
 * Start a container using Cargo. 
 * 
 * @version $Id: StartContainerMojo.java 529 2005-10-04 20:44:42Z mark $
 * @goal start
 */
public class CargoContainerStartMojo extends AbstractCargoContainerMojo implements Runnable
{
    /**
     * When we keep the container started, this is the time we wait before checking if
     * the container is stopped.
     */
    private static final int SLEEP = 100;
    
    /**
     * Decides whether to wait after the container is started or to return the execution
     * flow to the user.
     * 
     * @parameter default-value = "false"
     * @required
     */
    private boolean wait;

    private Container container;
    
    /**
     * @see org.apache.maven.plugin.Mojo#execute()
     */
    public void execute() throws MojoExecutionException
    {
        this.container = getContainerElement().createContainer();

        if (!(this.container instanceof LocalContainer))
        {
            throw new MojoExecutionException("Only local containers can be started");
        }

        ((LocalContainer) this.container).start();
        if (this.wait)
        {
            startWaitThread();
        }
    }

    /**
     * Wait indefinitely till the server is stopped by some external command. 
     */
    public void run()
    {
        while (!this.container.getState().isStopped())
        {
            try
            {
                Thread.sleep(SLEEP);
            }
            catch (InterruptedException exception)
            {
                getLog().warn(exception);
            }
        }
    }

    /**
     * Start the thread that will wait indefinitely till the server is stopped by some external
     * command.
     */
    private void startWaitThread()
    {
        new Thread(this).start();
    }
}