Sinatra Sample Microservice

This is an sample microservice written in Sinatra, intended to be used as part of 2hog's Docker trainings.

Spec

It implements a single endpoint (POST /), which:

1. Requires basic authentication
2. Returns a JSON response with a greeting

Example

paris@docker-training-samples-micro-sinatra:/mnt/project$ curl -X POST -d '' -u paris:kasidiaris localhost:4567
{"greeting":"Chào"}

Configuration

The Sinatra Sample Microservice accepts configuration via environment variables:

• AUTH_USER: The username to use for Basic Authentication (default: paris)
• AUTH_PASSWORD: The password to use for Basic Authentication (default: kasidiaris)

Secrets

The Sinatra Sample Microservice also accepts and prefers configuration for AUTH_USER and AUTH_PASSWORD as secret files:

• /run/secrets/auth_user: The username to use for Basic Authentication
• /run/secrets/auth_password: The password to use for Basic Authentication

Deployment

Docker

docker run -d \
-e AUTH_USER=paris -e AUTH_PASSWORD=kasidiaris \
-p 4567 \
2hog/docker-training-samples-micro-sinatra

Docker Swarm

docker secret create micro-sinatra-auth-user -
docker secret create micro-sinatra-auth-password -
docker stack deploy -c docker-compose.yml docker-training-samples-micro-sinatra

Kubernetes

kubectl create secret generic docker-training-samples-micro-sinatra-secret \
--from-literal=auth_user=paris \
--from-literal=auth_password=kasidiaris
kubectl apply -f kube/

Development

To develop the Sinatra Sample Microservice, follow these steps:

1. Install Docker (docs) and Docker Compose (docs)
2. Clone this repository:

   git clone https://github.com/2hog/docker-training-samples-micro-sinatra
   

3. Launch the app with Docker Compose:

   docker-compose up
   

4. Open your repository with your editor and rock n' roll!

License

This software is MIT licensed.