This version is still in development and is not considered stable yet. For the latest stable version, please use Micrometer 1.14.2!

Custom Meter Registry

Micrometer includes support for popular meter registries, so you should check those first. For an existing meter registry, if you think that your requirements are generally useful, consider creating an issue or PR against the Micrometer issue tracker. For a non-existent meter registry, if it is widely-used, consider creating an issue or PR for it.

If you need to create your own custom meter registry, you can create it by extending one of the base classes for meter registries: MeterRegistry, PushMeterRegistry, or StepMeterRegistry.

The most common way is to extend StepMeterRegistry. You can create your own custom StepMeterRegistry.

First, define your own meter registry configuration by extending StepRegistryConfig, as follows:

public interface CustomRegistryConfig extends StepRegistryConfig {

	CustomRegistryConfig DEFAULT = k -> null;

	@Override
	default String prefix() {
		return "custom";
	}

}

Second, define your own meter registry by extending StepMeterRegistry, as follows:

public class CustomMeterRegistry extends StepMeterRegistry {

	public CustomMeterRegistry(CustomRegistryConfig config, Clock clock) {
		super(config, clock);

		start(new NamedThreadFactory("custom-metrics-publisher"));
	}

	@Override
	protected void publish() {
		getMeters().stream().forEach(meter -> System.out.println("Publishing " + meter.getId()));
	}

	@Override
	protected TimeUnit getBaseTimeUnit() {
		return TimeUnit.MILLISECONDS;
	}

}

Finally, create the meter registry configuration and the meter registry. If you use Spring Boot, you can do so as follows:

@Configuration
public class MetricsConfig {

	@Bean
	public CustomRegistryConfig customRegistryConfig() {
		return CustomRegistryConfig.DEFAULT;
	}

	@Bean
	public CustomMeterRegistry customMeterRegistry(CustomRegistryConfig customRegistryConfig, Clock clock) {
		return new CustomMeterRegistry(customRegistryConfig, clock);
	}

}