Packages

object Dropwizard

MetricsOps algebra capable of recording Dropwizard metrics

For example, the following code would wrap a org.http4s.HttpRoutes with a org.http4s.server.middleware.Metrics that records metrics to a given metric registry.

import org.http4s.client.middleware.Metrics
import org.http4s.client.dropwizard.Dropwizard

val meteredRoutes = Metrics[IO](Dropwizard(registry, "server"))(testRoutes)

Analogously, the following code would wrap a org.http4s.client.Client with a org.http4s.client.middleware.Metrics that records metrics to a given Metric Registry, classifying the metrics by HTTP method.

import org.http4s.client.metrics.core.Metrics
import org.http4s.client.metrics.dropwizard.Dropwizard

val classifierFunc = (r: Request[IO]) => Some(r.method.toString.toLowerCase)
val meteredClient = Metrics(Dropwizard(registry, "client"), classifierFunc)(client)

Registers the following metrics:

{prefix}.{classifier}.active.requests - Counter {prefix}.{classifier}.requests.headers - Timer {prefix}.{classifier}.requests.total - Timer {prefix}.{classifier}.get-requests - Timer {prefix}.{classifier}.post-requests - Timer {prefix}.{classifier}.put-requests - Timer {prefix}.{classifier}.head-requests - Timer {prefix}.{classifier}.move-requests - Timer {prefix}.{classifier}.options-requests - Timer {prefix}.{classifier}.trace-requests - Timer {prefix}.{classifier}.connect-requests - Timer {prefix}.{classifier}.delete-requests - Timer {prefix}.{classifier}.other-requests - Timer {prefix}.{classifier}.1xx-responses - Timer {prefix}.{classifier}.2xx-responses - Timer {prefix}.{classifier}.3xx-responses - Timer {prefix}.{classifier}.4xx-responses - Timer {prefix}.{classifier}.5xx-responses - Timer {prefix}.{classifier}.errors - Timer {prefix}.{classifier}.timeouts - Timer {prefix}.{classifier}.abnormal-terminations - Timer

Source
Dropwizard.scala
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  4. def apply[F[_]](registry: MetricRegistry, prefix: String = "org.http4s.server")(implicit F: Sync[F]): MetricsOps[F]

    Creates a MetricsOps that supports Dropwizard metrics

    Creates a MetricsOps that supports Dropwizard metrics

    registry

    a dropwizard metric registry

    prefix

    a prefix that will be added to all metrics

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