patrickstolc / Messaging-Example

PubSub Example

Overview

This is a simple example of messaging using a Publisher and Subscriber patterns in .NET 7 using EasyNetQ.

Technologies

• .NET 7, .NET 7 SDK
• EasyNetQ

Building and Running the Application

The application can be built and run using Docker or .NET 7 SDK.

Prerequisites

1. Install Docker
2. Install .NET 7 SDK
3. Clone this repository to your local machine

Local Build

Build the console Subscriber app by running the following command in the terminal:

dotnet build .\Subscriber\Subscriber.csproj

Build the console Publisher app by running the following command in the terminal:

dotnet build .\Publisher\Publisher.csproj

Docker Build

In order to build and run the Publisher and Subscriber containers, you need a running RabbitMQ instance.

First create a network

docker network create microservices_net

For compatibility with the docker-compose files in this repository, you can use the following command to run a RabbitMQ container:

docker run -d --network microservices_net --hostname rabbitmq --name rabbitmq -p 15672:15672 -p 5672:5672 rabbitmq:3.12-management

It will build and run a RabbitMQ container with the same hostname and network that the Publisher and Subscriber containers will use for connecting.

Build and run the Subscriber container using docker-compose:

docker-compose -f projects/Subscriber/docker-compose.yml up -d

Build and run the Publisher container using docker-compose:

docker-compose -f projects/Publisher/docker-compose.yml run --rm publisher

Using the command above allows you to run the Publisher container with an interactive terminal, so you can send messages to any subscriber.