Java tutorial
/*- * #%L * GarethHealy :: Quota Limits Generator * %% * Copyright (C) 2013 - 2018 Gareth Healy * %% * Licensed 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. * #L% */ package com.garethahealy.quotalimitsgenerator.cli; import java.io.IOException; import java.net.URISyntaxException; import com.garethahealy.quotalimitsgenerator.cli.parsers.CLIOptions; import com.garethahealy.quotalimitsgenerator.cli.parsers.DefaultCLIParser; import com.garethahealy.quotalimitsgenerator.cli.parsers.QuotaLimitModel; import com.garethahealy.quotalimitsgenerator.cli.parsers.YamlTemplateProcessor; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.DefaultParser; import org.apache.commons.cli.ParseException; import org.apache.commons.lang3.exception.ExceptionUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import freemarker.template.TemplateException; public class Application { private static final Logger LOG = LoggerFactory.getLogger(Application.class); public static void main(String[] args) { LOG.info("Starting..."); DefaultCLIParser parser = new DefaultCLIParser(new DefaultParser()); try { CommandLine commandLine = parser.parse(args, parser.getOptions()); CLIOptions options = parser.getParsedOptions(commandLine); LOG.info(options.toString()); QuotaLimitModel quotaLimitModel = options.calculate(); LOG.info(quotaLimitModel.toString()); YamlTemplateProcessor yamlTemplateProcessor = new YamlTemplateProcessor(); yamlTemplateProcessor.init(); yamlTemplateProcessor.process(quotaLimitModel); } catch (NumberFormatException | IOException | ParseException | URISyntaxException | TemplateException ex) { LOG.error("We hit a problem! {}", ExceptionUtils.getStackTrace(ex)); parser.displayHelp(false); } } }