CODEWITHSUNDEEP
configakka
Sanjay
Sanjay

Reputation: 55

How to specify a default when akka config does not have the specified variable?

Akka 1.3 had the ability to look up a config variable, and it returned an option, so defaults could be specified.

Akka 2.0 does not have this. So how do I check for the existence of a variable, and specify a default if it is not defined?

Example:

In 1.3: config.getString("myvariable", "mydefault") // default specified

In 2.0: GlobalActorSystem.settings.config.getString("myvariable") //no way to specify default

Upvotes: 1

Views: 188

Answers (2)

Roland Kuhn
Roland Kuhn

Reputation: 15472

You can use config.hasPath to find out whether a setting has been specified. But I would recommend that only in the case where you want to attach special meaning to the omission of a setting. If you just want to have a default, include a reference.conf in your project (at the root of the JAR) which contains that value.

Upvotes: 1

Viktor Klang
Viktor Klang

Reputation: 26597

You shouldn't put defaults in code, you put your defaults in a reference.conf placed in your /resources folder of your jar. Read about the Typesafe Config project here: https://github.com/typesafehub/config

Upvotes: 1

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