PureCFG

Inspired by this presentation

Objectives

• Create a pure functional library to load configuration from different sources, like properties files, json, yaml or any other source.
• Allow to switch from sources without changing the program.
• Self documented.
• Type safe.

Now it supports properties and toml files.

Example

[server]
  host = "localhost"
  port = 8080

record HostAndPort(String host, Integer port) { }

var readHostAndPort = PureCFG.map2(PureCFG.readString("host"), PureCFG.readInt("port"), HostAndPort::new);
var program = PureCFG.readConfig("server", readHostAndPort);

var config = program.unsafeRun(Source.fromToml("config.toml"));
assertEquals(new HostAndPort("localhost", 8080), config);

License

Distributed under MIT License