prometheus

type Handler struct {
	// Setting this field will trim this prefix from metric namespaces of the
	// metrics received by this handler.
	//
	// Unlike statsd-like systems, it is common for prometheus metrics to not
	// be prefixed and instead use labels to identify which service or group
	// of services the metrics are coming from. The intent of this field is to
	// provide support for this use case.
	//
	// Note that triming only applies to the metric namespace, the metric
	// name will always be left untouched.
	//
	// If empty, no prefix trimming is done.
	TrimPrefix string

	// MetricTimeout defines how long the handler exposes metrics that aren't
	// receiving updates.
	//
	// The default is to use a 2 minutes metric timeout.
	MetricTimeout time.Duration

	// Buckets is the registry of histogram buckets used by the handler,
	// If nil, stats.Buckets is used instead.
	Buckets stats.HistogramBuckets
	// contains filtered or unexported fields
}