How to set base url for all controllers in micronaut ? through application.yml or any configuration

How to set base url for all controllers

 @Controller("/api/hello")
class HelloController{

    @Get("/greet")
   fun greet(){

   }
}

Instead of writing /api on each controller is there a way to write it as base url in configuration for all rest controller endpoints

You can configure once RouteBuilder.UriNamingStrategy (default implementation HyphenatedUriNamingStrategy)

1. add some custom property micronaut.context-path, application.yml:

micronaut:
  context-path: /someApiPath

2. create ConfigurableUriNamingStrategy and extend HyphenatedUriNamingStrategy :

@Singleton
@Replaces(HyphenatedUriNamingStrategy::class)
class ConfigurableUriNamingStrategy : HyphenatedUriNamingStrategy() {
    
    @Value("\${micronaut.context-path}")
    var contextPath: String? = null

    override fun resolveUri(type: Class<*>?): String {
        return contextPath ?: "" + super.resolveUri(type)
    }

    override fun resolveUri(beanDefinition: BeanDefinition<*>?): String {
        return contextPath ?: "" + super.resolveUri(beanDefinition)
    }

    override fun resolveUri(property: String?): String {
        return contextPath ?: "" + super.resolveUri(property)
    }

    override fun resolveUri(type: Class<*>?, id: PropertyConvention?): String {
        return contextPath ?: "" + super.resolveUri(type, id)
    }
}

This configurations will be applied for all controllers, for your HelloController URI path will be /someApiPath/greet, if the property micronaut.context-path is missing then /greet:

@Controller
class HelloController {

   @Get("/greet")
   fun greet(){

   }
}