This is a very basic microservices test app forked from https://github.com/cianclarke/microservices-primer to give us a playground for experimenting with different ways to develop and deploy microservices in Node.
To run the test app:
npm install -g pm2 # if'n you don't want to ./node_modules/pm2/bin/pm2 all the time
npm install
npm start
You can see the running services with pm2 list, and stop individual
services with pm2 stop <id>. Run pm2 logs to tail all the output.
Visit http://localhost:3000/ in a browser to see the simple test app. All interactions with external APIs are mocked so we don't actually retrieve real weather data, send SMS, etc.
We're now running our series of microservices, and can interact with them using CURL:
# Service 1: Create a new order in the database
curl 'http://127.0.0.1:3003/orders/umbrellas' -H 'Content-Type: application/json' --data-binary '{"city":"Dublin","country":"Ireland","quantity":984.4999999999999,"accountManager":"+1 123 456 789"}'
# Service 1: List orders in the database
curl http://127.0.0.1:3003/orders/umbrellas
# Service 2: GET request to rain service to retrieve information for Dublin, Ireland
curl 'http://127.0.0.1:3001/rain?city=Dublin&country=Ireland'
# Service 3: POST to the SMS service
curl 'http://127.0.0.1:3002/sms' -H 'Content-Type: application/json' --data-binary '{"to":"+1 123 456 789","message":"My SMS Message!"}'
To build the front end javascript file, use browserify:
# if you don't already have browserify installed
npm install -g browserify
npm run build
To automatically regenerate the www/bundle.js file when it changes:
npm run watch
To run each microservice inside a docker container instead of as regular processes, install Docker Compose (https://docs.docker.com/compose/install/) and run:
cd docker/
docker-compose up
Use CTRL+C to terminate the docker cluster and docker-compose rm
to remove the created docker containers.