Starting RabbitMq as GenerigContainer in Gitlab Ci

Question

I have a Spring Boot 2.1 Application which has integration tests. For integration tests purposes i want start a RabbitMq container with testcontainers framework. When I start those on my local machine everything seems to work i can access my rabbitMQ during the IT tests. However once i execute under gitlab-ci i constantly get connection refused exceptions

Here is my application-it-properties

spring.rabbitmq.host=localhost
spring.rabbitmq.virtualHost=/
spring.rabbitmq.port=5673
spring.rabbitmq.username=guest
spring.rabbitmq.password=guest
spring.rabbitmq.dynamic=true
spring.rabbitmq.template.retry.enabled=true
spring.rabbitmq.listener.simple.acknowledgeMode=AUTO
spring.rabbitmq.listener.simple.concurrency=5

This is my verify step in gitlab-ci

verify:feature:
  stage: verify
  script:
    - git config --global user.email gitlab@test.de
    - git config --global user.name gitlab
    - git fetch --all
    - git checkout origin/develop
    - git merge $CI_BUILD_REF --no-commit --no-ff
    - mvn $MAVEN_CLI_OPTS verify sonar:sonar $SONAR_PREVIEW_CLI_OPTS
  only:
    - /feature.*/

And this is how i start my testcontainer RabbitMQ

@Slf4j
@RunWith(SpringRunner.class)
@TestPropertySource(locations = {"classpath:application-it.properties"})
@SpringBootTest
public class TransformerServiceApplicationIt {

  private static final int EXPOSED_RABBITMQ_PORT = 5672;
  private static final int EXPORTED_RABBITMQ_PORT = 5673;

  /**
   * Start the rabbitmq.
   */
  static {
    final Consumer<CreateContainerCmd> rabbitCmd = e -> e.withPortBindings(new PortBinding(Ports.Binding.bindPort(EXPORTED_RABBITMQ_PORT), new ExposedPort(EXPOSED_RABBITMQ_PORT)));
    final GenericContainer rabbitMq = new GenericContainer("rabbitmq:3-management").withExposedPorts(EXPOSED_RABBITMQ_PORT)
        .withCreateContainerCmdModifier(rabbitCmd);
    rabbitMq.start();

  }....
}

And this is my exception

[org.springframework.amqp.rabbit.core.RabbitTemplate]: Factory method 'rabbitTemplate' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'itRabbitMQConfig': Invocation of init method failed; nested exception is org.springframework.amqp.AmqpConnectException: java.net.ConnectException: Connection refused (Connection refused)

My guess is that it has something to do with the hostname resolving for localhost on gitlab.

Answer 1

Try this:

  static {
    final GenericContainer rabbitMq = new GenericContainer("rabbitmq:3-management").withExposedPorts(EXPOSED_RABBITMQ_PORT);
    rabbitMq.start();

    // Pass the properties directly to the app. Do not use properties file.
    System.setProperty("spring.rabbitmq.host", rabbitMq.getContainerIpAddress());
    System.setProperty("spring.rabbitmq.port", rabbitMq.getMappedPort(5672).toString());
  }