org.teksme.server.queue.sender.impl.AMQPQueueSenderService.java Source code

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Here is the source code for org.teksme.server.queue.sender.impl.AMQPQueueSenderService.java

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/*
 * Copyright 2010 Creative Works, Inc.
 * Creative Works 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.teksme.server.queue.sender.impl;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.Date;
import java.util.logging.Logger;

import org.osgi.framework.BundleContext;
import org.osgi.framework.InvalidSyntaxException;
import org.osgi.framework.ServiceReference;
import org.teksme.model.teks.InboundMessage;
import org.teksme.model.teks.OutboundMessage;
import org.teksme.server.common.messaging.AMQPBrokerParameters;
import org.teksme.server.queue.sender.Activator;
import org.teksme.server.queue.sender.MessageQueueSender;

import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;

public class AMQPQueueSenderService implements MessageQueueSender {

    Logger logger = Logger.getLogger(AMQPQueueSenderService.class.getName());

    public void publishMessage(OutboundMessage outboundMsg) {

        Channel lChannel = null;
        Connection lConnection = null;

        try {

            lConnection = getAMQPConnServiceReference();

            lChannel = lConnection.createChannel();

            byte[] data = convertToSend(outboundMsg);

            // Parameters to constructor for new AMQP.BasicProperties are:
            // (contentType, contentEncoding, headers, deliveryMode, priority,
            // correlationId, replyTo, expiration, messageId, timestamp,
            // type, userId, appId, clusterId)
            // http://www.rabbitmq.com/releases/rabbitmq-java-client/v2.1.0/rabbitmq-java-client-javadoc-2.1.0/

            final String contentType = "text/xml";
            final String contentEncoding = null;// outboundMsg.getEncoding(0);
            final Integer PERSISTENT = 2;
            final Integer deliveryMode = PERSISTENT;
            final Integer priority = null; // outboundMsg.getDeliveryQueuePriority(0);
            final String replyTo = outboundMsg.getFrom();
            final String expiration = Float.toString(outboundMsg.getTimeout());
            final String messageId = outboundMsg.getId();
            final Date timestamp = outboundMsg.getDate();

            AMQP.BasicProperties messageProps = new AMQP.BasicProperties(contentType, contentEncoding, null,
                    deliveryMode, priority, null, replyTo, expiration, messageId, timestamp, null, null, null,
                    null);

            final String queueName = "teksme.outboundPrimaryQueue";
            final String routingKey = "sms.outbound";
            final String exchange = "teksme.outbound";

            logger.info(
                    "Publishing message to queue [" + queueName + "] with routing key [" + routingKey + "] ...");

            lChannel.basicPublish(exchange, routingKey, messageProps, data);

            // new Test().run();

        } catch (InvalidSyntaxException e) {
            // Shouldn't happen
            e.printStackTrace();
        } catch (Exception lIoException) {
            throw new RuntimeException(lIoException);
        } finally {
            try {
                closeChannel(lChannel);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }

    public void closeChannel(Channel channel) throws IOException {
        if (channel != null) {
            channel.abort();
            channel = null;
        }
    }

    public void publishMessage(InboundMessage inboundMsg) {

        try {

            Connection lConnection = getAMQPConnServiceReference();

            Channel lChannel = lConnection.createChannel();

            byte[] data = convertToSend(inboundMsg);

            // Parameters to constructor for new AMQP.BasicProperties are:
            // (contentType, contentEncoding, headers, deliveryMode, priority,
            // correlationId, replyTo,
            // expiration, messageId, timestamp, type, userId, appId, clusterId)
            // Here we're just specifying that the message is persistant
            AMQP.BasicProperties messageProperties = new AMQP.BasicProperties(null, null, null, new Integer(2),
                    null, null, null, null, null, null, null, null, null, null);

            final String queueName = "teksme.inboundPrimary";
            final String routingKey = "sms.inbound";
            final String exchange = "teksme.inbound";

            logger.info(
                    "Publishing message to queue [" + queueName + "] with routing key [" + routingKey + "] ...");

            lChannel.basicPublish(exchange, routingKey, messageProperties, data);

            lChannel.close();
            // lConnection.close();
        } catch (Exception lIoException) {
            throw new RuntimeException(lIoException);
        }

    }

    private byte[] convertToSend(Object message) throws IOException {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(bos);
        oos.writeObject(message);
        oos.flush();
        oos.close();
        bos.close();
        byte[] data = bos.toByteArray();
        return data;
    }

    @SuppressWarnings({ "rawtypes", "unchecked" })
    private Connection getAMQPConnServiceReference() throws InvalidSyntaxException {

        BundleContext bundleContext = Activator.getContext();

        ServiceReference<Connection> result = null;
        ServiceReference[] refs = bundleContext.getServiceReferences(Connection.class.getName(),
                String.format("(%s=%s)", AMQPBrokerParameters.CONNECTION_NAME, AMQPBrokerParameters.HOST));
        if (refs != null && refs.length > 0) {
            result = refs[0];
        }

        Connection lConnection = (Connection) bundleContext.getService(result);

        return lConnection;
    }

}