/**
 * Copyright (C) FuseSource, Inc.
 * http://fusesource.com
 *
 * 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.fusesource.fabric.dosgi.io;


/**
 * The core lifecyle interface for ActiveMQ components.
 *
 * @version $Revision: 1.1 $
 */
public interface Service {

    /**
     * Starts the service.  No guarantee is given that the service has fully started
     * by the time this method returns.
     */
    void start() throws Exception;

    /**
     * Starts the service.  Executes the onComplete runnable once the service has fully started up.
     *
     * @param onComplete my be set to null if not interested in a callback.
     */
    void start(Runnable onComplete) throws Exception;

    /**
     * Stops the service.  No guarantee is given that the service has fully stopped
     * by the time this method returns.
     */
    void stop();

    /**
     * Stops the service.  Executes the onComplete runnable once the service has fully stopped.
     *
     * @param onComplete my be set to null if not interested in a callback.
     */
    void stop(Runnable onComplete);

}
