Java tutorial
/*************************************************************************** * * * Organization: Lawrence Livermore National Lab (LLNL) * * Directorate: Computation * * Department: Computing Applications and Research * * Division: S&T Global Security * * Matrix: Atmospheric, Earth and Energy Division * * Program: PCMDI * * Project: Earth Systems Grid Federation (ESGF) Data Node Software * * First Author: Gavin M. Bell (gavin@llnl.gov) * * * **************************************************************************** * * * Copyright (c) 2009, Lawrence Livermore National Security, LLC. * * Produced at the Lawrence Livermore National Laboratory * * Written by: Gavin M. Bell (gavin@llnl.gov) * * LLNL-CODE-420962 * * * * All rights reserved. This file is part of the: * * Earth System Grid Federation (ESGF) Data Node Software Stack * * * * For details, see http://esgf.org/esg-node/ * * Please also read this link * * http://esgf.org/LICENSE * * * * * Redistribution and use in source and binary forms, with or * * without modification, are permitted provided that the following * * conditions are met: * * * * * Redistributions of source code must retain the above copyright * * notice, this list of conditions and the disclaimer below. * * * * * Redistributions in binary form must reproduce the above copyright * * notice, this list of conditions and the disclaimer (as noted below) * * in the documentation and/or other materials provided with the * * distribution. * * * * Neither the name of the LLNS/LLNL nor the names of its contributors * * may be used to endorse or promote products derived from this * * software without specific prior written permission. * * * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LAWRENCE * * LIVERMORE NATIONAL SECURITY, LLC, THE U.S. DEPARTMENT OF ENERGY OR * * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * * SUCH DAMAGE. * * * ***************************************************************************/ /** Description: The entire point of this class is to enable to ability to make calls against the esgf-node-manager. It can be considered a node manager "stub". **/ package esg.node.connection; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.commons.logging.impl.*; public class ESGConnectorTester { private static final Log log = LogFactory.getLog(ESGConnectorTester.class); public static void main(String[] args) { for (String arg : args) System.out.println(arg); if (args.length < 1 || args.length > 2) { System.out.println(" Usage requries args: [\"prune\" | \"ping\"]"); System.exit(1); } System.out.println("Running ESGConnector..."); String function = args[0]; String host = "localhost"; if (args.length == 2) host = args[1]; try { if (function.equalsIgnoreCase("prune")) { System.out.println("prune -> " + host); if (ESGConnector.getInstance().setSecured(false).setEndpoint(host, true).prune()) { System.out.println("Pruned dead peer connections from " + host); } else { System.out.println("There were no dead peer connections detected on " + host + " (or host itself is dead)"); } } if (function.equalsIgnoreCase("ping")) { System.out.println("ping -> " + host); if (ESGConnector.getInstance().setSecured(false).setEndpoint(host, true).ping()) { System.out.println("Successfully pinged " + host); } else { System.out.println("Unable to ping " + host); } } } catch (Throwable t) { log.error("Oops there was a problem... is the node manager running on " + ESGConnector.getInstance().getEndpoint() + "?"); log.error(t); t.printStackTrace(); ESGConnector.getInstance().clearCache(); } System.out.println("bye"); } }