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A Java-based performance testing tool for RabbitMQ.
There is a newer version: 2.22.1
// Copyright (c) 2007-Present Pivotal Software, Inc.  All rights reserved.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 1.1 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2.  For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].

package com.rabbitmq.perf;

import com.rabbitmq.tools.Host;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;

public class Broker {
    private static final String BASE = "/tmp/rabbitmq-performance/";
    private static final String SCRIPTS = "../rabbitmq-server/scripts/";

    private static final String HIPE_C = "{rabbit, [{hipe_compile, true}]}";
    private static final String COARSE_C = "{rabbitmq_management_agent, [{force_fine_statistics, false}]}";

    private final String name;
    private final String config;

    public Broker(String name) {
        this(name, "[].");
    }

    public Broker(String name, String config) {
        this.name = name;
        this.config = config;
    }

    public void start() throws IOException {
        Process pr = null;
        try {
            writeConfig();

            System.out.println("Starting broker '" + name + "'...");
            ProcessBuilder pb = new ProcessBuilder(SCRIPTS + "rabbitmq-server");
            pb.environment().put("RABBITMQ_PID_FILE", pidfile());
            pb.environment().put("RABBITMQ_LOG_BASE", BASE + "logs");
            pb.environment().put("RABBITMQ_MNESIA_DIR", BASE + "db");
            pb.environment().put("RABBITMQ_PLUGINS_EXPAND_DIR", BASE + "plugins-expand");
            pb.environment().put("RABBITMQ_CONFIG_FILE", BASE + "rabbitmq");

            pr = pb.start();

            Host.executeCommand(SCRIPTS + "rabbitmqctl wait " + pidfile());

        } catch (IOException e) {
            System.out.println("Broker start failed!");
            assert pr != null;
            String stdout = capture(pr.getInputStream());
            String stderr = capture(pr.getErrorStream());
            System.out.println(stdout);
            System.out.println(stderr);
            throw new RuntimeException(e);
        }
    }

    private String pidfile() {
        return BASE + "pid";
    }

    private void writeConfig() throws IOException {
        new File(BASE).mkdirs();
        try (PrintWriter out = new PrintWriter(new FileWriter(BASE + "rabbitmq.config"))) {
            out.println(config);
        }
    }

    public void stop() {
        System.out.println("Stopping broker '" + name + "' ...");
        try {
            Host.executeCommand(SCRIPTS + "rabbitmqctl stop " + pidfile());
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public String getName() {
        return name;
    }


    private static String capture(InputStream is)
        throws IOException
    {
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line;
        StringBuilder buff = new StringBuilder();
        while ((line = br.readLine()) != null) {
            buff.append(line);
        }
        return buff.toString();
    }
}