Package org.forgerock.monitoring.http

Class PrometheusHandler

java.lang.Object

org.forgerock.monitoring.http.PrometheusHandler

All Implemented Interfaces:

org.forgerock.http.Handler

public final class PrometheusHandler
extends Object
implements org.forgerock.http.Handler

An HTTP Handler from which Prometheus and OpenTelemetry Collector can scrape monitoring information.

Field Summary

Fields

Modifier and Type	Field	Description
static List<String>	SUPPORTED_HTTP_METHODS	List of HTTP methods supported by a Prometheus Handler.

Method Summary

Modifier and Type	Method	Description
Promise<org.forgerock.http.protocol.Response,NeverThrowsException>	handle(org.forgerock.services.context.Context context, org.forgerock.http.protocol.Request request)
static PrometheusHandler	prometheusHandler(String metricPrefix, Supplier<MeterRegistry> meterRegistrySupplier)	Returns a new Prometheus Handler configured to use the legacy output format.
static PrometheusHandler	prometheusHandler(String metricPrefix, Supplier<MeterRegistry> meterRegistrySupplier, BooleanSupplier compliantOutputFormat)	Returns a new Prometheus Handler which can be switched to use different output formats.

Methods inherited from class java.lang.Object

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

Field Detail

SUPPORTED_HTTP_METHODS

public static final List<String> SUPPORTED_HTTP_METHODS

List of HTTP methods supported by a Prometheus Handler.

Method Detail

prometheusHandler

public static PrometheusHandler prometheusHandler(String metricPrefix,
                                                  Supplier<MeterRegistry> meterRegistrySupplier)

Returns a new Prometheus Handler configured to use the legacy output format. Note: this method is deprecated. Callers should use prometheusHandler(String, Supplier, BooleanSupplier) instead

Parameters:

metricPrefix - The prefix that will be prepended before each metric. Ideally this will be the product specific prefix.

meterRegistrySupplier - A Supplier of the MetricRegistry which will be used to collect metrics to include in HTTP response sent by this PrometheusHandler.

Returns:

a new PrometheusHandler

prometheusHandler

public static PrometheusHandler prometheusHandler(String metricPrefix,
                                                  Supplier<MeterRegistry> meterRegistrySupplier,
                                                  BooleanSupplier compliantOutputFormat)

Returns a new Prometheus Handler which can be switched to use different output formats.

Parameters:

metricPrefix - The prefix that will be prepended before each metric. Ideally this will be the product specific prefix.

meterRegistrySupplier - A Supplier of the MetricRegistry which will be used to collect metrics to include in HTTP response sent by this PrometheusHandler.

compliantOutputFormat - Returns a boolean used to switch the prometheus handler output format from compliant (if true) to legacy (if false)

Returns:

a new PrometheusHandler

handle

public Promise<org.forgerock.http.protocol.Response,NeverThrowsException> handle(org.forgerock.services.context.Context context,
                                                                                       org.forgerock.http.protocol.Request request)

Specified by:

handle in interface org.forgerock.http.Handler