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BAEL-6072 | Create Dynamic Queues in RabbitMQ (#13301) 

* BAEL-6072 | Article code

* Code changes as per editor review

* Test cases updated

* Removed unused imports

* Updated test case
This commit is contained in:
Avin Buricha 2023-02-09 23:40:24 +05:30 committed by GitHub
parent e48229dc25
commit a43afaccc9
2 changed files with 105 additions and 0 deletions
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34
messaging-modules/rabbitmq/src/main/java/com/baeldung/queue/dynamic/DynamicQueueCreation.java Normal file
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package com.baeldung.queue.dynamic;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class DynamicQueueCreation {
private static final Logger log = LoggerFactory.getLogger(DynamicQueueCreation.class);
private static final String QUEUE_NAME = "baeldung-queue";
public static void main(String[] args) throws IOException, TimeoutException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
try (Connection connection = factory.newConnection(); Channel channel = connection.createChannel()) {
AMQP.Queue.DeclareOk declareOk = channel.queueDeclare(QUEUE_NAME, true, false, false, null);
log.info(declareOk.getQueue());
AMQP.Queue.DeclareOk declareOkExists = channel.queueDeclarePassive(QUEUE_NAME);
log.info(declareOkExists.getQueue());
}
}
}

71
messaging-modules/rabbitmq/src/test/java/com/baeldung/benchmark/queue/dynamic/DynamicQueueCreationLiveTest.java Normal file
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package com.baeldung.benchmark.queue.dynamic;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.io.IOException;
import java.util.concurrent.TimeoutException;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import com.rabbitmq.client.AMQP;
import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;
public class DynamicQueueCreationLiveTest {
private static final String QUEUE_NAME = "baeldung-queue";
private static final String QUEUE_NAME_NEW = "baeldung-queue-new";
private static Connection connection;
@BeforeAll
public static void setUpConnection() throws IOException, TimeoutException {
ConnectionFactory factory = new ConnectionFactory();
factory.setHost("localhost");
connection = factory.newConnection();
}
@Test
void givenQueueName_whenCreatingQueue_thenCheckingIfQueueCreated() throws IOException, TimeoutException {
try (Channel channel = connection.createChannel()) {
AMQP.Queue.DeclareOk declareOk = channel.queueDeclare(QUEUE_NAME, true, false, false, null);
assertNotNull(declareOk);
assertEquals(QUEUE_NAME, declareOk.getQueue());
}
}
@Test
void givenQueueName_whenCreatingQueue_thenCheckingIfQueueExists() throws IOException, TimeoutException {
try (Channel channel = connection.createChannel()) {
channel.queueDeclare(QUEUE_NAME, true, false, false, null);
AMQP.Queue.DeclareOk declareOk = channel.queueDeclarePassive(QUEUE_NAME);
assertNotNull(declareOk);
assertEquals(QUEUE_NAME, declareOk.getQueue());
}
}
@Test
void givenQueueName_whenQueueDoesNotExist_thenCheckingIfQueueExists() throws IOException, TimeoutException {
try (Channel channel = connection.createChannel()) {
assertThrows(IOException.class, () -> {
channel.queueDeclarePassive(QUEUE_NAME_NEW);
});
}
}
@AfterAll
public static void destroyConnection() throws IOException {
connection.close();
}
}