client/org.http4s.client.middleware/Metrics

Metrics

org.http4s.client.middleware.Metrics$

object Metrics

Client middleware to record metrics for the http4s client.

This middleware will record:

Number of active requests
Time duration to receive the response headers
Time duration to process the whole response body
Time duration of errors, timeouts and other abnormal terminations

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

Attributes

Source:: Metrics.scala
Graph
Supertypes: class Object
trait Matchable
class Any
Self type: Metrics.type

Members list

Concise view

Value members

Concrete methods

Wraps a Client with a middleware capable of recording metrics

Attributes

classifierF: a function that allows to add a classifier that can be customized per request
client: the Client to gather metrics from
ops: a algebra describing the metrics operations
Returns:: the metrics middleware wrapping the Client
Source:: Metrics.scala

Wraps a Client with a middleware capable of recording metrics

Same as apply, but can classify requests effectually, e.g. performing side-effects or examining the body. Failed attempt to classify the request (e.g. failing with F.raiseError) leads to not recording metrics for that request.

Attributes

classifierF: a function that allows to add a classifier that can be customized per request
client: the Client to gather metrics from
ops: a algebra describing the metrics operations
Returns:: the metrics middleware wrapping the Client
Note:: Compiling the request body in classifierF is unsafe, unless you are using some caching middleware.
Source:: Metrics.scala

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