NestJS RabbitMQ Microservice Integration

Currently, I am attempting to establish a connection to a Rabbit MQ docker container through NestJS microservice. The setup involves running it using vagrant. Unfortunately, I keep encountering the following error:

[1601171008162] ERROR (32761 on local): Disconnected from RMQ. Attempting to reconnect.
context: "Server"
trace: ""
[1601171008163] ERROR (32761 on local):
context: "Server"
trace: ""
msg: {
  "err": {
    "cause": {},
    "isOperational": true
  }
}

Below is the server configuration details.

{
  transport: Transport.RMQ,
  options: {
    urls: ['amp://username:<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="eb9b8a98989c84998fabdad9dcc5dbc5dbc5da">[email protected]</a>:5672'],
    queue: 'test_queue',
    queueOptions: {
      durable: true
    },
    noAck: true,
    prefetchCount: 1
  }
}

I have been struggling with this issue for over a week now. Any assistance would be greatly appreciated.

typescriptrabbitmqmicroservicesnestjs

Answer №1

Encountered a similar problem where the culprit was a misconfigured virtual host in RabbitMQ. I mistakenly set my virtual host as /example instead of just example while reading amqp://localhost:5672/example in the code. Making this correction resolved the issue for me, so I hope it proves helpful to others facing the same challenge!

Answer №3

After encountering an error, I managed to resolve it by adjusting the microservice configuration settings, specifically by setting noAck to false and prefetchCount to 1.

Here is a sample of how the configuration should look:

 const app = await NestFactory.createMicroservice(AppModule, {
    transport: Transport.RMQ,
    options: {
      urls: [process.env.CLOUDAMQP_URL],
      queue: 'queueName',
      queueOptions: {
        durable: false,
      },
      noAck: false,
      prefetchCount: 1,
    },
  });
  await app.listen();

The reason behind this adjustment is as follows:

When referring to the NestJS documentation, a basic configuration example was provided without defining noAck. Subsequently, an example illustrating how to consume a message from the queue was shown with manual acknowledgement. However, since noAck was not set in the initial configuration, setting it as false caused the mentioned error to occur. This happened because when attempting to perform manual Acknowledgement, the message had already been removed due to the absence of noAck flag.

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