Postcoder

https://postcoder.thelookoutway.net/

Microservice to return surrounding postcodes given an Australian postcode. Leverages the australia_postcode gem. All distance calculations are performed in memory.

System Dependencies

• Ruby MRI 3.1.2
• Rails 7.0.2.3
• API_TOKEN secret environment variable
• direnv (recommended for development)
• nix (recommended for development)

There's no database, australia_postcode reads data from a CSV.

Usage

The service only has one endpoint, /. Target this with a GET request, supplying the api_token and postcode query parameters, and you'll receive a JSON response of the shape:

{
  "3": [<array of integer postcodes>],
  "7": [<array of integer postcodes>],
  "10": [<array of integer postcodes>],
  "20": [<array of integer postcodes>],
}

e.g.:

$ curl "http://localhost:3000/?api_token=ASDF&postcode=2752"
# => {"3":[2752],"7":[2570,2752],"10":[2570,2745,2752],"20":[2555,2556,2557,2567,2570,2745,2752,2773]}

Development

Install the application's dependencies:

$ bundle

Start the application server:

$ bundle exec rails server

Testing

Run the entire test suite.

$ bundle exec rspec

Deploying

This application is automatically deployed when commits are pushed to the main branch and the tests on the main branch pass.