Is there a way to set application.conf location in Scala?

Question

If i'm using Java, I can set custom application.properties location with something like this:

@PropertySources({
        @PropertySource(value = "file:${APP_CONF_DIR}/application.properties", ignoreResourceNotFound = true)
})

Is there any way to do the same thing in Scala without using "-Dbla.bla=app.config" on application start

Answer 1

The behavior of Lightbend Config around loading application.conf is mostly from ConfigFactory.load(), which will look for application.conf or the file/resource given by Java properties (the -Dconfig.file and friends in your question).

If not interested in setting the alternative to application.conf through Java properties, one can load a different resource from the classpath with ConfigFactory.load("foo") to load foo.conf. Alternatively if one is loading a file, one can use ConfigFactory.load(ConfigFactory.parseFile(file)), where file is a java.io.File.