Package org.apache.juneau.rest.server.metrics.micrometer

Class MetricsMixin

java.lang.Object

org.apache.juneau.rest.server.servlet.RestMixin

org.apache.juneau.rest.server.metrics.micrometer.MetricsMixin

public class MetricsMixin
extends RestMixin

Mixin flavor of the /metrics endpoint: renders a Prometheus scrape from a consumer-provided Micrometer MeterRegistry resolved from the host bean store.

Composes into a host resource via @Rest(mixins=MetricsMixin.class) and delegates to a shared MetricsManager worker. When no registry bean is present, or the registry is not a Prometheus registry, the endpoint degrades to HTTP 501 (Not Implemented) rather than failing — consistent with micrometer-core being provided and the registry choice being the consumer's.

See Also:

• MetricsManager
• MicrometerMetricsRecorder

Since:

10.0.0

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.juneau.rest.server.servlet.RestMixin

RestMixin.Builder<R extends RestMixin,SELF extends RestMixin.Builder<R,SELF>>, RestMixin.DefaultBuilder<R extends RestMixin>

Constructor Summary

Constructors

Constructor	Description
MetricsMixin()

Method Summary

Modifier and Type	Method	Description
String	getMetrics(RestRequest req)	[GET /metrics] - Prometheus scrape of the consumer-provided MeterRegistry.

Methods inherited from class org.apache.juneau.rest.server.servlet.RestMixin

builder, getHostContext, getRestBuilder, setContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MetricsMixin

public MetricsMixin()

Method Details

getMetrics

public String getMetrics(RestRequest req)

[GET /metrics] - Prometheus scrape of the consumer-provided MeterRegistry.

Parameters:

req - The HTTP request.

Returns:

The Prometheus exposition text.

Throws:

NotImplemented - If no scrapeable MeterRegistry bean is registered.