org.springframework.amqp.rabbit.core.RabbitTemplatePublisherCallbacksIntegrationTests2.java Source code

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Here is the source code for org.springframework.amqp.rabbit.core.RabbitTemplatePublisherCallbacksIntegrationTests2.java

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/*
 * Copyright 2016 the original author or authors.
 *
 * 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 org.springframework.amqp.rabbit.core;

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

import java.io.IOException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;

import org.springframework.amqp.rabbit.connection.CachingConnectionFactory;
import org.springframework.amqp.rabbit.test.BrokerRunning;
import org.springframework.amqp.rabbit.test.BrokerTestUtils;

import com.rabbitmq.client.AMQP.BasicProperties;
import com.rabbitmq.client.DefaultConsumer;
import com.rabbitmq.client.Envelope;

/**
 * @author Gary Russell
 * @since 1.6
 *
 */
public class RabbitTemplatePublisherCallbacksIntegrationTests2 {

    private static final String ROUTE = "test.queue";

    private CachingConnectionFactory connectionFactoryWithConfirmsEnabled;

    private RabbitTemplate templateWithConfirmsEnabled;

    @Rule
    public BrokerRunning brokerIsRunning = BrokerRunning.isRunningWithEmptyQueues(ROUTE);

    @Before
    public void create() {
        connectionFactoryWithConfirmsEnabled = new CachingConnectionFactory();
        connectionFactoryWithConfirmsEnabled.setHost("localhost");
        // When using publisher confirms, the cache size needs to be large enough
        // otherwise channels can be closed before confirms are received.
        connectionFactoryWithConfirmsEnabled.setChannelCacheSize(100);
        connectionFactoryWithConfirmsEnabled.setPort(BrokerTestUtils.getPort());
        connectionFactoryWithConfirmsEnabled.setPublisherConfirms(true);
        templateWithConfirmsEnabled = new RabbitTemplate(connectionFactoryWithConfirmsEnabled);
    }

    @After
    public void cleanUp() {
        if (connectionFactoryWithConfirmsEnabled != null) {
            connectionFactoryWithConfirmsEnabled.destroy();
        }
        this.brokerIsRunning.removeTestQueues();
    }

    @Test
    public void test36Methods() throws Exception {
        this.templateWithConfirmsEnabled.convertAndSend(ROUTE, "foo");
        this.templateWithConfirmsEnabled.convertAndSend(ROUTE, "foo");
        assertMessageCountEquals(2L);
        assertEquals(Long.valueOf(1), this.templateWithConfirmsEnabled.execute(channel -> {
            final CountDownLatch latch = new CountDownLatch(2);
            String consumerTag = channel.basicConsume(ROUTE, new DefaultConsumer(channel) {
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, BasicProperties properties,
                        byte[] body) throws IOException {
                    latch.countDown();
                }
            });
            long consumerCount = channel.consumerCount(ROUTE);
            assertTrue(latch.await(10, TimeUnit.SECONDS));
            channel.basicCancel(consumerTag);
            return consumerCount;
        }));
        assertMessageCountEquals(0L);
    }

    private void assertMessageCountEquals(long wanted) throws InterruptedException {
        long messageCount = determineMessageCount();
        int n = 0;
        while (messageCount < wanted && n++ < 100) {
            Thread.sleep(100);
            messageCount = determineMessageCount();
        }
        assertEquals(wanted, messageCount);
    }

    private Long determineMessageCount() {
        return this.templateWithConfirmsEnabled.execute(channel -> channel.messageCount(ROUTE));
    }

}