This project is an exercise in design, code quality and showing the ability to think through approaches carefully. It is meant to be an example of how I would design a system that consumes data from a client that's sending metrics and in turn show that to a user on the front-end in real time.
This project uses the (golang-standards project-layout)[https://github.com/golang-standards/project-layout] for folder structure consistency.
dockerdocker-composemake
Development
nodejs
After running make install or make docker-build, you must import the ./certs/RootCA.pem as a trusted root authority into your browser before the websocket will work after building. Otherwise the websocket connection will not work.
To run the project without doing development run:
make docker-buildmake run- Visit https://localhost:8080 in your browser (Note: Do install the generated certificate into your browser as instructed above!)
- Install the the fakeiot binary on your machine so you can run the commannd to insert the metrics and see them updating on the front-end.
- Log into the interface with
test@example.comandp@ssw0rdas the credentials. fakeiot --token=882e8f9b-76a3-46fb-9f7e-bd536bdf5795 --url="https://127.0.0.1:8080" --ca-cert=./certs/server.crt run --users=100 --account-id=47f3c307-6344-49e7-961c-ea200e950a89
make install
make build
Using docker-compose, you'll need to be running a postgres database.
docker-compose up -d
Using a little utility called (air)[https://github.com/cosmtrek/air] you can rebuild all files on watch.
make watch
The user id and account ID for the user are hard coded as follows:
- user_id: de7169a0-1ca1-4f18-8fb8-29d3a7cafd30
- account_id: 47f3c307-6344-49e7-961c-ea200e950a89
Run the fakeiot client with the hard coded token and account ID:
fakeiot --token=882e8f9b-76a3-46fb-9f7e-bd536bdf5795 --url="https://127.0.0.1:8080" --ca-cert=./certs/server.crt run --account-id=47f3c307-6344-49e7-961c-ea200e950a89 --users=100
The database file is seeded via scripts/init-pg.sql`.