It downloads the static GTFS feeds periodically and ingests them into the local Postgres database, for querying later using PostGIS. Realtime GTFS data, such as vehicle position and trip updates, are polled and produced into Kafka, where it is consumed by other workers.
The front end is a responsive web app built in React and uses Mapbox and deck.gl for rendering the map and icon layers. When zoomed in, Trimetric shows you a dynamic list of the stops that are visible on screen, which you can click to see upcoming arrivals.
You can view Trimetric online at: https://trimetric.briand.co
You can run Trimetric locally using Docker Compose. You'll need:
Then run the following to get things up and running:
git clone https://github.com/bsdavidson/trimetric.git cd trimetric mkdir secrets echo MAPBOX_ACCESS_TOKEN=<your_mapbox_token> > web/.env echo <your_trimet_api_key> > secrets/trimet-api-key echo example > secrets/postgres-password echo INFLUXDB_USER_PASSWORD=example > secrets/influxdb.env docker-compose up
You should see the logs from Docker Compose in the terminal. All the dependencies will be started automatically and the local directories will be mounted in the containers for easy development. The API and web app will be rebuilt automatically when you make changes. You can view the running web app in your browser by opening: http://localhost:8080
make sure the Docker Compose environment is running (with