MessageListenerContainerAwsTest.java

/*
 * Copyright 2013-2014 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.cloud.aws.messaging;

import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSAsync;
import com.amazonaws.services.sqs.model.SendMessageBatchRequest;
import com.amazonaws.services.sqs.model.SendMessageBatchRequestEntry;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.aws.core.env.stack.StackResourceRegistry;
import org.springframework.cloud.aws.core.support.documentation.RuntimeUse;
import org.springframework.cloud.aws.messaging.listener.annotation.SqsListener;
import org.springframework.core.task.TaskExecutor;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

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

@RunWith(SpringJUnit4ClassRunner.class)
public abstract class MessageListenerContainerAwsTest extends AbstractContainerTest {

    private static final int BATCH_MESSAGE_SIZE = 10;

    private static final int TOTAL_BATCHES = 100;

    private static final int TOTAL_MESSAGES = BATCH_MESSAGE_SIZE * TOTAL_BATCHES;

    @SuppressWarnings("SpringJavaAutowiringInspection")
    @Autowired
    private AmazonSQSAsync amazonSqsClient;

    @Autowired
    private TaskExecutor taskExecutor;

    @Autowired
    private MessageReceiver messageReceiver;

    @Autowired
    private StackResourceRegistry stackResourceRegistry;

    @Before
    public void insertTotalNumberOfMessagesIntoTheLoadTestQueue() throws InterruptedException {
        CountDownLatch countDownLatch = new CountDownLatch(TOTAL_BATCHES);

        for (int batch = 0; batch < TOTAL_BATCHES; batch++) {
            this.taskExecutor.execute(new QueueMessageSender(this.stackResourceRegistry.lookupPhysicalResourceId("LoadTestQueue"), this.amazonSqsClient, countDownLatch));
        }

        countDownLatch.await();
    }

    @Test
    public void listenToAllMessagesUntilTheyAreReceivedOrTimeOut() throws Exception {
        assertTrue(this.messageReceiver.getCountDownLatch().await(5, TimeUnit.MINUTES));
    }

    static class MessageReceiver {

        @RuntimeUse
        @SqsListener("LoadTestQueue")
        public void onMessage(String message) {
            assertNotNull(message);
            this.getCountDownLatch().countDown();
        }

        CountDownLatch getCountDownLatch() {
            return this.countDownLatch;
        }

        private final CountDownLatch countDownLatch = new CountDownLatch(TOTAL_MESSAGES);


    }

    private static class QueueMessageSender implements Runnable {

        private final String queueUrl;
        private final AmazonSQS amazonSqs;
        private final CountDownLatch countDownLatch;

        private QueueMessageSender(String queueUrl, AmazonSQS amazonSqs, CountDownLatch countDownLatch) {
            this.queueUrl = queueUrl;
            this.amazonSqs = amazonSqs;
            this.countDownLatch = countDownLatch;
        }

        @Override
        public void run() {
            List<SendMessageBatchRequestEntry> messages = new ArrayList<>();
            for (int i = 0; i < BATCH_MESSAGE_SIZE; i++) {
                messages.add(new SendMessageBatchRequestEntry(Integer.toString(i), new StringBuilder().append("message_").append(i).toString()));
            }
            this.amazonSqs.sendMessageBatch(new SendMessageBatchRequest(this.queueUrl, messages));
            this.countDownLatch.countDown();
        }
    }
}