Java tutorial
/** * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you 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.apache.stratos.cli.commands; import org.apache.commons.cli.*; import org.apache.stratos.cli.Command; import org.apache.stratos.cli.RestCommandLineService; import org.apache.stratos.cli.StratosCommandContext; import org.apache.stratos.cli.exception.CommandException; import org.apache.stratos.cli.utils.CliConstants; import org.apache.stratos.cli.utils.CliUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; /** * Deploy service group command. */ public class DeployServiceGroupCommand implements Command<StratosCommandContext> { private static final Logger logger = LoggerFactory.getLogger(DeployServiceGroupCommand.class); private Options options; public DeployServiceGroupCommand() { options = new Options(); Option option = new Option(CliConstants.RESOURCE_PATH, CliConstants.RESOURCE_PATH_LONG_OPTION, true, "Service group resource path"); option.setArgName("resource path"); options.addOption(option); } @Override public String getName() { return "deploy-service-group"; } @Override public String getDescription() { return "Deploy service group"; } @Override public String getArgumentSyntax() { return null; } @Override public Options getOptions() { return options; } @Override public int execute(StratosCommandContext context, String[] args) throws CommandException { if (logger.isDebugEnabled()) { logger.debug("Executing command: ", getName()); } if ((args == null) || (args.length <= 0)) { context.getStratosApplication().printUsage(getName()); return CliConstants.COMMAND_FAILED; } try { CommandLineParser parser = new GnuParser(); CommandLine commandLine = parser.parse(options, args); if (commandLine.hasOption(CliConstants.RESOURCE_PATH)) { String resourcePath = commandLine.getOptionValue(CliConstants.RESOURCE_PATH); if (resourcePath == null) { System.out.println("usage: " + getName() + " [-" + CliConstants.RESOURCE_PATH + " " + CliConstants.RESOURCE_PATH_LONG_OPTION + "]"); return CliConstants.COMMAND_FAILED; } String resourceFileContent = CliUtils.readResource(resourcePath); RestCommandLineService.getInstance().deployServiceGroup(resourceFileContent); return CliConstants.COMMAND_SUCCESSFULL; } else { System.out.println("usage: " + getName() + " [-" + CliConstants.RESOURCE_PATH + " " + CliConstants.RESOURCE_PATH_LONG_OPTION + "]"); return CliConstants.COMMAND_FAILED; } } catch (ParseException e) { logger.error("Error parsing arguments", e); System.out.println(e.getMessage()); return CliConstants.COMMAND_FAILED; } catch (IOException e) { System.out.println("Invalid resource path"); return CliConstants.COMMAND_FAILED; } catch (Exception e) { String message = "Unknown error occurred: " + e.getMessage(); System.out.println(message); logger.error(message, e); return CliConstants.COMMAND_FAILED; } } }