org.apache.helix.recipes.rabbitmq.Emitter.java Source code

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Here is the source code for org.apache.helix.recipes.rabbitmq.Emitter.java

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package org.apache.helix.recipes.rabbitmq;

/*
 * 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.
 */

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

public class Emitter {

    private static final String EXCHANGE_NAME = "topic_logs";

    public static void main(String[] args) throws Exception {
        if (args.length < 1) {
            System.err.println("USAGE: java Emitter rabbitmqServer (e.g. localhost) numberOfMessage (optional)");
            System.exit(1);
        }

        final String mqServer = args[0]; // "zzhang-ld";
        int count = Integer.MAX_VALUE;
        if (args.length > 1) {
            try {
                count = Integer.parseInt(args[1]);
            } catch (Exception e) {
                // TODO: handle exception
            }
        }
        System.out.println("Sending " + count + " messages with random topic id");

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(mqServer);
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        channel.exchangeDeclare(EXCHANGE_NAME, "topic");

        for (int i = 0; i < count; i++) {
            int rand = ((int) (Math.random() * 10000) % SetupConsumerCluster.DEFAULT_PARTITION_NUMBER);
            String routingKey = "topic_" + rand;
            String message = "message_" + rand;

            channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes());
            System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'");

            Thread.sleep(1000);
        }

        connection.close();
    }

}