/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.jboss.system.server;

import java.util.Properties;

/**
 * The interface of the basic JBoss server component.
 *
 * @version <tt>$Revision$</tt>
 * @author  <a href="mailto:jason@planet57.com">Jason Dillon</a>
 */
public interface Server
{
   /** The JMX notification event type sent on end of server startup */
   public final String START_NOTIFICATION_TYPE = "org.jboss.system.server.started";
   /** The JMX notification event type sent on begin of the server shutdown */
   public final String STOP_NOTIFICATION_TYPE = "org.jboss.system.server.stopped";

   /**
    * Initialize the Server instance.
    *
    * @param props     The configuration properties for the server.
    * @return          Typed server configuration object.
    *
    * @throws IllegalStateException    Already initialized.
    * @throws Exception                Failed to initialize.
    */
   void init(Properties props) throws IllegalStateException, Exception;

   /**
    * Get the typed server configuration object which the
    * server has been initalized to use.
    *
    * @return          Typed server configuration object.
    *
    * @throws IllegalStateException    Not initialized.
    */
   ServerConfig getConfig() throws IllegalStateException;

   /**
    * Start the Server instance.
    *
    * @throws IllegalStateException    Already started or not initialized.
    * @throws Exception                Failed to start.
    */
   void start() throws IllegalStateException, Exception;

   /**
    * Check if the server is started.
    *
    * @return   True if the server is started, else false.
    */
   boolean isStarted();

   /**
    * Shutdown the Server instance and run shutdown hooks.  
    *
    * <p>If the exit on shutdown flag is true, then {@link #exit} 
    *    is called, else only the shutdown hook is run.
    *
    * @throws IllegalStateException    No started.
    */
   void shutdown() throws IllegalStateException;

   /**
    * Shutdown the server, the JVM and run shutdown hooks.
    *
    * @param exitcode   The exit code returned to the operating system.
    */
   void exit(int exitcode);

   /** 
    * Forcibly terminates the currently running Java virtual machine.
    *
    * @param exitcode   The exit code returned to the operating system.
    */
   void halt(int exitcode);
}
