com.github.dann.wspusher.pubsub.publisher.impl.RabbitMQPublisherImpl.java Source code

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Here is the source code for com.github.dann.wspusher.pubsub.publisher.impl.RabbitMQPublisherImpl.java

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/*
 * Copyright 2012 Dann.
 *
 * 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.
 */
package com.github.dann.wspusher.pubsub.publisher.impl;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import com.github.dann.wspusher.common.WsConfig;
import com.github.dann.wspusher.common.WsConstants;
import com.github.dann.wspusher.common.util.RabbitMQResourceUtils;
import com.github.dann.wspusher.exception.WsRuntimeException;
import com.github.dann.wspusher.pubsub.publisher.Publisher;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

@Component
public class RabbitMQPublisherImpl implements Publisher {
    private Logger logger = LoggerFactory.getLogger(RabbitMQPublisherImpl.class);

    private static final String EXCHANGE_TYPE = "fanout";

    public RabbitMQPublisherImpl() {
    }

    public void publish(String exchange, String message) {
        Connection connection = null;
        Channel channel = null;
        try {
            ConnectionFactory factory = new ConnectionFactory();
            factory.setHost(WsConfig.getMQServerHost());
            connection = factory.newConnection();
            channel = connection.createChannel();
            channel.exchangeDeclare(exchange, EXCHANGE_TYPE);
            channel.basicPublish(exchange, "", null, message.getBytes(WsConstants.ENCODING_UTF8));

        } catch (Exception e) {
            logger.error("Publishing message faile", e);
            throw new WsRuntimeException("Publishig message failed", e);
        } finally {
            RabbitMQResourceUtils.closeQuietly(channel);
            RabbitMQResourceUtils.closeQuietly(connection);
        }

    }

}