如何在Spring Boot Actuator中注册匿名HealthIndicators

Question

This link writing_custom_healthindicators describes how to register custom HealthIndicators so that they can be used with Spring Boot Actuator. The example in the link uses @Component to register custom classes that implement the HealthIndicator interface.

But I am creating anonymous HealthIndicator instances. Below is an example of how these anonymous HealthIndicators instances can be created.

        HealthIndicator healthIndicator = () -> {
            Health h;
            //custom code to instantiate Health object.
            return h;
        };
        //how to register h with Spring?

Lets say the code above is in a for loop where many HealthIndicators are being created. How can they be registered with Spring so that Spring Boot Actuator recognizes them as mentioned in the link?

Answer 1

One way is to provide custom HealthEndpoint like so:

@Configuration
class HealthConfig {
    @Bean
    HealthEndpoint healthEndpoint(Map<String, HealthIndicator> defaultIndicators){
        for(int i=0;i<10;i+=1){
            defaultIndicators.put("custom_indicator_" + i, ()-> Health.down().build());
        }
        return new HealthEndpoint(new OrderedHealthAggregator(), defaultIndicators);
    }
}