object Metrics

Server middleware to record metrics for the http4s server.

This middleware will record: - Number of active requests - Time duration to send the response headers - Time duration to send the whole response body - Time duration of errors and other abnormal terminations

This middleware can be extended to support any metrics ecosystem by implementing the org.http4s.metrics.MetricsOps type

Source
Metrics.scala
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  4. def apply[F[_]](ops: MetricsOps[F], emptyResponseHandler: Option[Status] = Status.NotFound.some, errorResponseHandler: (Throwable) ⇒ Option[Status] = ..., classifierF: (Request[F]) ⇒ Option[String] = (_: Request[F]) => None)(routes: HttpRoutes[F])(implicit F: Sync[F], clock: Clock[F]): HttpRoutes[F]

    A server middleware capable of recording metrics

    A server middleware capable of recording metrics

    ops

    a algebra describing the metrics operations

    emptyResponseHandler

    an optional http status to be registered for requests that do not match

    errorResponseHandler

    a function that maps a java.lang.Throwable to an optional http status code to register

    classifierF

    a function that allows to add a classifier that can be customized per request

    returns

    the metrics middleware

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