Getting Started with RabbitMQ

• RabbitMQ is an open source message broker.
• It accepts and translates messages from a producer (the message sender) and holds it in a queue so that a consumer (the message receiver) can retrieve it.
• It excels at is doing this at scale while staying lightweight and easy to deploy.

Before You Begin

Here are few tools you need

1. Docker : RabbitMQ server will run in a container to ease the setup and app will run in a different container
2. Python

Run RabbitMQ server

To ease the setup of our RabbitMQ node, we’ll run the RabbitMQ container image from Docker Hub. For this example, w’ll just need a simple single-node RabbitMQ server, so we won’t need to change any of the default settings. Run the container image with the following

docker run -it --rm -p 5672:5672 -p 15672:15672 rabbitmq:3-management

Here, we run 3-management tag of the RabbitMQ container image. This image ships with the management plug-in, which will provide an HTTP API and web-based UI for your RabbitMQ server. Docker run in interactive shell with the -it option, as well as automatically remove the container when it exits with the -rm option. We forward a couple of ports (5672 for the RabbitMQ server and 15672 for the HTTP API and web UI) from our local machine to the container, which means that w can connect to it on localhost.

To access the web UI, go to http://localhost:15672. The username and password are both guest. Here w can change settings, add and remove users, as well as view diagnostic information from the server.

Running RabbitMQ server using docker-compose

1. From the root of the project directory run docker-compose up
2. If you want to run the service in the background, pass the -d flag docker-compose up -d
3. To see what is running docker-compose ps
4. To stop, if Compose started with docker-compose up -d run docker-compose stop
5. To bring everything down, removing the containers entirely run docker-compose down

Run emitter and consumer

1. emitter.py emit messages to Rabbit MQ. Run the code python3 app/tutorial_1-hello-world/emitter.py
2. consumer.py code consume emitted messages. Run the code python3 app/tutorial_1-hello-world/consumer.py

Make sure RabbitMQ server is running

Links and info

1. Experimenting with RabbitMQ on our workstation
2. Docker
3. Docker-Compose