probers

type Configurer interface {
	// Kind returns a name that uniquely identifies the `Kind` of
	// `Configurer`.
	Kind() string

	// UnmarshalSettings unmarshals YAML as bytes to a `Configurer`
	// object.
	UnmarshalSettings([]byte) (Configurer, error)

	// MakeProber constructs a `Prober` object from the contents of the
	// bound `Configurer` object. If the `Configurer` cannot be
	// validated, an error appropriate for end-user consumption is
	// returned instead. The map of `prometheus.Collector` objects passed to
	// MakeProber should be the same as the return value from Instrument()
	MakeProber(map[string]prometheus.Collector) (Prober, error)

	// Instrument constructs any `prometheus.Collector` objects that a prober of
	// the configured type will need to report its own metrics. A map is
	// returned containing the constructed objects, indexed by the name of the
	// prometheus metric. If no objects were constructed, nil is returned.
	Instrument() map[string]prometheus.Collector
}

type Prober interface {
	// Name returns a name that uniquely identifies the monitor that
	// configured this `Prober`.
	Name() string

	// Kind returns a name that uniquely identifies the `Kind` of
	// `Prober`.
	Kind() string

	// Probe attempts the configured request or query, Each `Prober`
	// must treat the duration passed to it as a timeout.
	Probe(time.Duration) (bool, time.Duration)
}

type Settings map[string]interface{}