Java tutorial
/** * This file is part of JATTER * <https://binfalse.de/software/jatter/> * * Copyright (c) 2014 Martin Scharm -- <software@binfalse.de> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.binfalse.jatter; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.text.SimpleDateFormat; import org.apache.camel.Exchange; import org.apache.camel.Processor; import org.apache.camel.builder.RouteBuilder; import org.apache.camel.main.Main; import org.apache.commons.cli.CommandLine; import org.apache.commons.cli.CommandLineParser; import org.apache.commons.cli.DefaultParser; import org.apache.commons.cli.HelpFormatter; import org.apache.commons.cli.Option; import org.apache.commons.cli.Options; import org.jivesoftware.smackx.jiveproperties.JivePropertiesManager; import de.binfalse.bflog.LOGGER; import de.binfalse.jatter.processors.JabberMessageProcessor; import de.binfalse.jatter.processors.TwitterStatusProcessor; import de.binfalse.jatter.processors.TwitterUpdatePreprocessor; import twitter4j.TwitterException; /** * The main file of the JATTER application * * @author Martin Scharm * */ public class App { public static SimpleDateFormat printDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); public static void help(Options options, String msg) { System.out.println(msg); System.out.println(); new HelpFormatter().printHelp("java -jar jatter.jar -c CONFIG", options); System.exit(1); } /** * Run jatter's main. * * @param args * the arguments * @throws Exception * the exception */ public static void main(String[] args) throws Exception { Options options = new Options(); Option conf = new Option("c", "config", true, "config file path"); conf.setRequired(false); options.addOption(conf); Option t = new Option("t", "template", false, "show a config template"); t.setRequired(false); options.addOption(t); Option v = new Option("v", "verbose", false, "print information messages"); v.setRequired(false); options.addOption(v); Option d = new Option("d", "debug", false, "print debugging messages incl stack traces"); d.setRequired(false); options.addOption(d); Option h = new Option("h", "help", false, "show help"); h.setRequired(false); options.addOption(h); CommandLineParser parser = new DefaultParser(); CommandLine cmd; try { cmd = parser.parse(options, args); if (cmd.hasOption("h")) throw new RuntimeException("showing the help page"); } catch (Exception e) { help(options, e.getMessage()); return; } if (cmd.hasOption("t")) { System.out.println(); BufferedReader br = new BufferedReader(new InputStreamReader( App.class.getClassLoader().getResourceAsStream("config.properties.template"))); while (br.ready()) System.out.println(br.readLine()); br.close(); System.exit(0); } if (cmd.hasOption("v")) LOGGER.setMinLevel(LOGGER.INFO); if (cmd.hasOption("d")) { LOGGER.setMinLevel(LOGGER.DEBUG); LOGGER.setLogStackTrace(true); } if (!cmd.hasOption("c")) help(options, "a config file is required for running jatter"); startJatter(cmd.getOptionValue("c")); } /** * Start a new jatter instance. * * @param configFile * the config file * @throws Exception * the exception */ public static void startJatter(String configFile) throws Exception { LOGGER.info("starting jatter"); Config config = new Config(); config.readConfig(configFile); String timeFormat = config.getTimeFormat(); if (timeFormat != null && timeFormat.length() > 0) printDateFormat = new SimpleDateFormat(timeFormat); LOGGER.debug("creating a chat endpoint at"); final String chatEndpoint = String.format("xmpp://%s@%s:5222/%s?password=%s", config.getJabberUser(), config.getJabberServer(), config.getJabberContact(), config.getJabberPassword()); LOGGER.debug(chatEndpoint.replaceAll("password=.*$", "password=XXX")); LOGGER.debug("creating a twitter-home endpoint"); final String twitterHomeEndpoint = String.format( "twitter://timeline/home?type=polling&delay=%s&consumerKey=%s&consumerSecret=%s&accessToken=%s&accessTokenSecret=%s", config.getTwitterPollingintervall(), config.getTwitterConsumerKey(), config.getTwitterConsumerSecret(), config.getTwitterAccesstoken(), config.getTwitterAccesstokenSecret()); LOGGER.debug("creating a twitter-mentions endpoint"); final String twitterMentionsEndpoint = String.format( "twitter://timeline/mentions?type=polling&delay=%s&consumerKey=%s&consumerSecret=%s&accessToken=%s&accessTokenSecret=%s", config.getTwitterPollingintervall(), config.getTwitterConsumerKey(), config.getTwitterConsumerSecret(), config.getTwitterAccesstoken(), config.getTwitterAccesstokenSecret()); LOGGER.debug("creating a twitter-updater endpoint"); final String twitterUpdater = String.format( "twitter://timeline/user?consumerKey=%s&consumerSecret=%s&accessToken=%s&accessTokenSecret=%s", config.getTwitterConsumerKey(), config.getTwitterConsumerSecret(), config.getTwitterAccesstoken(), config.getTwitterAccesstokenSecret()); JivePropertiesManager.setJavaObjectEnabled(true); final TwitterStatusProcessor twitterStatusProc = new TwitterStatusProcessor(config); final JabberMessageProcessor jabberMessageProc = new JabberMessageProcessor(config); final TwitterUpdatePreprocessor tupre = new TwitterUpdatePreprocessor(); Main main = new Main(); LOGGER.info("creating routes"); main.addRouteBuilder(new RouteBuilder() { @Override public void configure() throws IOException { LOGGER.debug("twitter-home -> status processor -> chat"); from(twitterHomeEndpoint).process(twitterStatusProc).to(chatEndpoint); LOGGER.debug("twitter-mentions -> status processor -> chat"); from(twitterMentionsEndpoint).process(twitterStatusProc).process(new Processor() { public void process(Exchange exchange) throws Exception { String payload = exchange.getIn().getBody(String.class); exchange.getIn().setBody("*MENTIONED*: " + payload); } }).to(chatEndpoint); LOGGER.debug("chat -> decider -> twitter|bot"); from(chatEndpoint).choice().when(exchange -> JabberMessageProcessor.isBotCommand(exchange)) .process(jabberMessageProc).to(chatEndpoint).otherwise().process(tupre).doTry() .to(twitterUpdater).setBody(constant("timeline updated")).to(chatEndpoint) .doCatch(TwitterException.class).process(new Processor() { public void process(Exchange exchange) throws Exception { LOGGER.debug("chat message failed to send to twitter"); String payload = exchange.getIn().getBody(String.class); exchange.getIn() .setBody("*failed*: " + payload + " (length: " + payload.length() + ")"); } }).to(chatEndpoint).end().endChoice(); } }); main.run(); } }