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scalaakkaconfig

Reuse variables in akka config

How can I reuse a config property in a couple of other properties? My simplified real-world example looks like this:

myApp {

  host = "www.myfoohost.com"

  urls {
    url1 = host + "/b" // this...
    url2 = host + "/a" // ... and this do not work
  }
}
Solution

  • That's called substitutions in Typesafe Config, which uses the ${} notation:

    myApp {
  host = "www.myfoohost.com"

  urls {
    url1 = ${myApp.host}"/b"
    url2 = ${myApp.host}"/a"
  }
}