stanch/forecast

The demo from the talk I gave at the Lisbon Scala meetup on October 15, 2015

Forecast

This is the demo from the talk I gave at the Lisbon Scala meetup on October 15, 2015. If features a simple web server that respons with wind sounds according to a weather forecast. The code is best viewed in the following order:

• Forecast.scala — Data model

  This file shows how we can concisely model real-world data with Scala case classes. It also illustrates some tricks for “updating” immutable data.

• ForecastSpec.scala — Property-based tests

  Here you can see how you can use property-based tests with automatically derived generators to check properties on a random sample of your data.

• JsonProtocol.scala — JSON protocol

  This module showcases how we can automatically and manually provide mappings between our data and JSON.

• ForecastService.scala — Making web requests

  Exemplified here is the usage of Akka-Http client library.

• SoundService.scala — A simple web server

  The final piece of this project combines routes and layouts implemented in Scala to assemble a simple web service that returns different wind sounds based on the speed of the wind.

• build.sbt — View the dependencies of this project.

Running

1. Install sbt: http://www.scala-sbt.org/release/tutorial/Setup.html
2. Run sbt test to run the tests.
3. Run sbt run to start the web server.