001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * SonarQube is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.process;
021    
022    public interface Monitored {
023    
024      /**
025       * Starts process. No need to block until fully started and operational.
026       */
027      void start();
028    
029      /**
030       * True if the process is started and operational (-> can accept requests), false if
031       * it's still starting. An exception is thrown is process failed to start (not starting
032       * nor started).
033       */
034      boolean isReady();
035    
036      /**
037       * Blocks until the process is terminated
038       */
039      void awaitStop();
040    
041      void stop();
042    }