Add prefix to graphite micrometer event in spring-boot

Question

I am using spring-boot 2 with graphite. I want to add a prefix to all my metrics.

@Bean
public MeterRegistry graphiteRegistsry() {
    return new GraphiteMeterRegistry(
           GraphiteConfig.DEFAULT, Clock.SYSTEM,
           (id, convention) -> "prefix." + 
           HierarchicalNameMapper.DEFAULT.toHierarchicalName(id,convention));
}

If I use this code this is actually add prefix, But also create some metrics without the prefix. It seems that their is almost all the metrics is duplicate.

How can I add this prefix? and that all the metrics that goes to graphite from this app will contains the prefix?

Thanks.

Answer 1

First, you can add a common tag using MeterRegistryCustomizer:

@Configuration
public class MetricsConfig {
  @Bean
  public MeterRegistryCustomizer<MeterRegistry> commonTags() {
    return r -> r.config().commonTags("commonTag", "somePrefix");
  }
}

Second, extend your application properties converting this tag to prefix:

management.metrics.export.graphite.tags-as-prefix=commonTag

Please have a look at the detailed explanation here