org.apache.ivory.messaging.MessageProducer.java Source code

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/*
 * 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.ivory.messaging;

import java.lang.reflect.InvocationTargetException;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.Session;
import javax.jms.Topic;

import org.apache.commons.cli.CommandLine;
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.apache.hadoop.conf.Configured;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.apache.ivory.messaging.EntityInstanceMessage.ARG;
import org.apache.log4j.Logger;

public class MessageProducer extends Configured implements Tool {

    private Connection connection;
    private static final Logger LOG = Logger.getLogger(MessageProducer.class);
    private static final long DEFAULT_TTL = 3 * 24 * 60 * 60 * 1000;

    /**
     * 
     * @param arguments
     *            - Accepts a Message to be send to JMS topic, creates a new
     *            Topic based on topic name if it does not exist or else
     *            existing topic with the same name is used to send the message.
     * @throws JMSException
     */
    protected void sendMessage(EntityInstanceMessage entityInstanceMessage) throws JMSException {

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic entityTopic = session.createTopic(entityInstanceMessage.getTopicName());
        javax.jms.MessageProducer producer = session.createProducer(entityTopic);
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);
        long messageTTL = DEFAULT_TTL;
        try {
            long messageTTLinMins = Long.parseLong(entityInstanceMessage.getBrokerTTL());
            messageTTL = messageTTLinMins * 60 * 1000;
        } catch (NumberFormatException e) {
            LOG.error("Error in parsing broker.ttl, setting TTL to:" + DEFAULT_TTL + " milli-seconds");
        }
        producer.setTimeToLive(messageTTL);
        producer.send(new EntityInstanceMessageCreator(entityInstanceMessage).createMessage(session));

    }

    public static void main(String[] args) throws Exception {
        ToolRunner.run(new MessageProducer(), args);
    }

    private void createAndStartConnection(String implementation, String userName, String password, String url)
            throws JMSException, ClassNotFoundException, IllegalArgumentException, SecurityException,
            InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {

        Class<ConnectionFactory> clazz = (Class<ConnectionFactory>) MessageProducer.class.getClassLoader()
                .loadClass(implementation);

        ConnectionFactory connectionFactory = clazz.getConstructor(String.class, String.class, String.class)
                .newInstance(userName, password, url);

        connection = connectionFactory.createConnection();
        connection.start();
    }

    private static CommandLine getCommand(String[] arguments) throws ParseException {
        Options options = new Options();
        addOption(options,
                new Option(ARG.brokerImplClass.getArgName(), true, "message broker Implementation class"));
        addOption(options, new Option(ARG.brokerTTL.getArgName(), true, "message time-to-live"));
        addOption(options, new Option(ARG.brokerUrl.getArgName(), true, "message broker url"));
        addOption(options, new Option(ARG.entityName.getArgName(), true, "name of the entity"));
        addOption(options, new Option(ARG.entityType.getArgName(), true, "type of the entity"));
        addOption(options, new Option(ARG.feedInstancePaths.getArgName(), true, "feed instance paths"));
        addOption(options, new Option(ARG.feedNames.getArgName(), true, "feed names"));
        addOption(options, new Option(ARG.logFile.getArgName(), true, "log file path"));
        addOption(options, new Option(ARG.nominalTime.getArgName(), true, "instance time"));
        addOption(options,
                new Option(ARG.operation.getArgName(), true, "operation like generate, delete, archive"));
        addOption(options, new Option(ARG.runId.getArgName(), true, "current run-id of the instance"));
        addOption(options, new Option(ARG.status.getArgName(), true, "status of workflow instance"));
        addOption(options, new Option(ARG.timeStamp.getArgName(), true, "current timestamp"));
        addOption(options,
                new Option(ARG.topicName.getArgName(), true, "name of the topic to be used to send message"));
        addOption(options, new Option(ARG.workflowId.getArgName(), true, "workflow id"));
        addOption(options, new Option(ARG.cluster.getArgName(), true, "cluster name"));

        return new GnuParser().parse(options, arguments);
    }

    private static void addOption(Options options, Option opt) {
        opt.setRequired(true);
        options.addOption(opt);
    }

    @Override
    public int run(String[] args) throws Exception {
        CommandLine cmd;
        try {
            cmd = getCommand(args);
        } catch (ParseException e) {
            throw new Exception("Unable to parse arguments: ", e);
        }
        EntityInstanceMessage[] entityInstanceMessage = EntityInstanceMessage.getMessages(cmd);
        if (entityInstanceMessage == null || entityInstanceMessage.length == 0) {
            LOG.warn("No operation on output feed");
            return 0;
        }

        MessageProducer ivoryMessageProducer = new MessageProducer();
        try {
            ivoryMessageProducer.createAndStartConnection(cmd.getOptionValue(ARG.brokerImplClass.name()), "", "",
                    cmd.getOptionValue(ARG.brokerUrl.name()));
            for (EntityInstanceMessage message : entityInstanceMessage) {
                LOG.info("Sending message:" + message.getKeyValueMap());
                ivoryMessageProducer.sendMessage(message);
            }
        } catch (JMSException e) {
            LOG.error("Error in getConnection:", e);
        } catch (Exception e) {
            LOG.error("Error in getConnection:", e);
        } finally {
            try {
                ivoryMessageProducer.connection.close();
            } catch (JMSException e) {
                LOG.error("Error in closing connection:", e);
            }
        }
        return 0;
    }

}