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 java.io.IOException; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.GnuParser; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import org.apache.commons.cli.ParseException; import org.slf4j.Logger; import org.slf4j.LoggerFactory; 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; public class UpdateSubscriptionPropertiesCommand implements Command<StratosCommandContext> { private static final Logger logger = LoggerFactory.getLogger(UpdateSubscriptionPropertiesCommand.class); private final Options options; public UpdateSubscriptionPropertiesCommand() { options = constructOptions(); } /** * Construct Options. * * @return Options expected from command-line. */ private Options constructOptions() { final Options options = new Options(); Option resourcePath = new Option(CliConstants.RESOURCE_PATH, CliConstants.RESOURCE_PATH_LONG_OPTION, true, "Update subscription properties resource path"); resourcePath.setArgName("resource path"); options.addOption(resourcePath); return options; } @Override public String getName() { return CliConstants.UPDATE_SUBSCRIPTION_ACTION; } @Override public String getDescription() { return "Update a previously made subscription."; } @Override public String getArgumentSyntax() { return "[cartridge-subscription-alias]"; } @Override public int execute(StratosCommandContext context, String[] args) throws CommandException { if (logger.isDebugEnabled()) { logger.debug("Executing {} command...", getName()); } final CommandLineParser parser = new GnuParser(); CommandLine commandLine; String[] remainingArgs = null; String resourcePath = null, subscriptionJson = null; try { commandLine = parser.parse(options, args); remainingArgs = commandLine.getArgs(); if (remainingArgs != null && remainingArgs.length == 1) { String alias = remainingArgs[0]; if (logger.isDebugEnabled()) { logger.debug("Getting info {}", alias); } if (commandLine.hasOption(CliConstants.RESOURCE_PATH)) { if (logger.isTraceEnabled()) { logger.trace("{} option is passed", CliConstants.RESOURCE_PATH); } try { resourcePath = commandLine.getOptionValue(CliConstants.RESOURCE_PATH); subscriptionJson = CliUtils.readResource(resourcePath); } catch (IOException e) { System.out.println("Invalid resource path"); return CliConstants.COMMAND_FAILED; } } RestCommandLineService.getInstance().updateSubscritptionProperties(alias, subscriptionJson); return CliConstants.COMMAND_SUCCESSFULL; } else { context.getStratosApplication().printUsage(getName()); return CliConstants.COMMAND_FAILED; } } catch (ParseException e) { if (logger.isErrorEnabled()) { logger.error("Error parsing arguments", e); } System.out.println(e.getMessage()); return CliConstants.COMMAND_FAILED; } } @Override public Options getOptions() { return options; } }