tguntenaar/rabbitmq

Description

A GraphQL API using NestJS that does basic CRUD operations into a Postgres database and that sends events into a RabbitMQ queue

Prerequisites

• Docker installed
• Node package manager installed npm, yarn, pnpm

Installation

$ pnpm install

Running the app

Run postgres

$ docker run --name rabbitmq-nestjs-edge -e POSTGRES_PASSWORD=mypassword -p 5432:5432 -d postgres

Copy the .env.example file and call in .env. Add the database URL and set the correct password.

Run RabbitMQ server

$ docker run -it --rm --name rabbitmq -p 5672:5672 -p 15672:15672 rabbitmq:3.13-management

Open another terminal window and run NestJS

$ pnpm run start

or in dev mode

$ pnpm run start:dev

Playground instructions

Now open localhost:3000/graphql for the graphql playground.

1. Add the queries and mutation
2. Add the Query variables
3. Execute!

Queries and Mutation

mutation createEdge($createEdgeInput: CreateEdgeInput!) {
 	createEdge(createEdgeInput: $createEdgeInput) {
    node1_alias
    node2_alias
    id
    created_at
    updated_at
  }
}

query getEdges {
  getEdges {
    id
    node1_alias
    node2_alias
    created_at
    updated_at
    edge_peers
	}
}

query getEdge($getEdgeInput: GetEdgeInput!) {
  getEdge(getEdgeInput: $getEdgeInput) {
    id
    node1_alias
    node2_alias
    created_at
    updated_at
    edge_peers
	}
}

Query variables

{
	"createEdgeInput":  {
     "node1_alias": "13",
     "node2_alias": "12"
  },
  "getEdgeInput": {
  	 "id": "e5751d1-1229-4303-9160-daafda770b4a"
  }
}

NestJS

# development
$ pnpm run start

# watch mode
$ pnpm run start:dev

# production mode
$ pnpm run start:prod

Test

# unit tests
$ pnpm run test

# e2e tests
$ pnpm run test:e2e

# test coverage
$ pnpm run test:cov

Support

Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please read more here.

License

Nest is MIT licensed.

Stay in touch

• Author - Thomas Guntenaar