    001    /*
    002     * Copyright 2009 Red Hat, Inc.
    003     * Red Hat licenses this file to you under the Apache License, version
    004     * 2.0 (the "License"); you may not use this file except in compliance
    005     * with the License.  You may obtain a copy of the License at
    006     *    http://www.apache.org/licenses/LICENSE-2.0
    007     * Unless required by applicable law or agreed to in writing, software
    008     * distributed under the License is distributed on an "AS IS" BASIS,
    009     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
    010     * implied.  See the License for the specific language governing
    011     * permissions and limitations under the License.
    012     */
    013
    014    package org.hornetq.api.core.management;
    015
    016    /**
    017     * A HornetQComponentControl is used to manage the life cycle of a HornetQ component.
    018     *
    019     * @author <a href="mailto:jmesnil@redhat.com">Jeff Mesnil</a>
    020     */
    021    public interface HornetQComponentControl
    022    {
    023       /**
    024        * Returns {@code true} if this component is started, {@code false} else.
    025        */
    026       boolean isStarted();
    027
    028       /**
    029        * Starts this component.
    030        */
    031       void start() throws Exception;
    032
    033       /**
    034        * Stops this component.
    035        */
    036       void stop() throws Exception;
    037    }