Firehose.java

// 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
// info@rabbitmq.com.

package com.rabbitmq.client.test.server;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeoutException;

import org.junit.Test;

import com.rabbitmq.client.GetResponse;
import com.rabbitmq.client.test.BrokerTestCase;
import com.rabbitmq.tools.Host;

public class Firehose extends BrokerTestCase {
    private String q;
    private String firehose;

    @Override
    protected void createResources() throws IOException, TimeoutException {
        super.createResources();
        channel.exchangeDeclare("test", "fanout", false, true, null);
        q = channel.queueDeclare().getQueue();
        firehose = channel.queueDeclare().getQueue();
        channel.queueBind(q, "test", "");
        channel.queueBind(firehose, "amq.rabbitmq.trace", "#");
    }

    @Test public void firehose() throws IOException {
        publishGet("not traced");
        enable();
        GetResponse msg = publishGet("traced");
        disable();
        publishGet("not traced");

        GetResponse publish = basicGet(firehose);
        GetResponse deliver = basicGet(firehose);

        assertNotNull(publish);
        assertNotNull(deliver);
        assertDelivered(firehose, 0);

        // We don't test everything, that would be a bit OTT
        checkHeaders(publish.getProps().getHeaders());

        Map<String,Object> delHeaders = deliver.getProps().getHeaders();
        checkHeaders(delHeaders);
        assertNotNull(delHeaders.get("redelivered"));

        assertEquals(msg.getBody().length, publish.getBody().length);
        assertEquals(msg.getBody().length, deliver.getBody().length);
    }

    private GetResponse publishGet(String key) throws IOException {
        basicPublishVolatile("test", key);
        return basicGet(q);
    }

    private void checkHeaders(Map<String, Object> pubHeaders) {
        assertEquals("test", pubHeaders.get("exchange_name").toString());
        @SuppressWarnings("unchecked")
        List<Object> routing_keys = (List<Object>) pubHeaders.get("routing_keys");
        assertEquals("traced", routing_keys.get(0).toString());
    }

    private void enable() throws IOException {
        Host.rabbitmqctl("trace_on");
    }

    private void disable() throws IOException {
        Host.rabbitmqctl("trace_off");
    }
}