AddMiddleware adds the middleware to the http client options.

FromStatus returns the error source from backend status.

Middleware applies the duration to the context.

NewClient wraps the existing http client constructor and adds the duration middleware.

NewMetrics creates a new Metrics instance.

NewMetricsWrapper creates a new MetricsWrapper instance.

RoundTripper captures the duration of the request in the context.

DataSourceSLOMiddlewareName is the middleware name used by Middleware.

Duration is stored in the Context and used to collect metrics.

DurationKey is a key for storing the duration in the context.

Metrics is an abstraction for collecting metrics.

MetricsWrapper is a wrapper for a plugin that collects metrics.

Endpoint is the endpoint of the request (health, query, resource).

Source is the source of the error (downstream, plugin).

Status is the status of the request.