Hands-On Cloud-Native Applications with Java and Quarkus

Using converters in your configuration

To discuss configuration converters, let's take this simple configuration example:

year=2019isUser=true

Here, it's perfectly fine to inject the preceding properties into our code:

@ConfigProperty(name = "year", defaultValue = "2020")Integer year;@ConfigProperty(name = "isUser", defaultValue = "false")Boolean isUser;

Under the hood, the MicroProfile Config API provides a type-safe conversion for values that are not just plain strings.

Also, note that we can provide a default value for a property, which will be used if the property hasn't been defined in our configuration.

This happens by providing converters in the configuration model. Out of the box, some converters are already provided by the MicroProfile ...