message

type ObservationSet interface {
	// MarshalJSON returns the serialized form of the observations in JSON format.
	// This is required for sharing QoS data between multiple PATH instances.
	MarshalJSON() ([]byte, error)

	// Broadcast is used to communicate the observations contained
	// in the set to the interested entities.
	// e.g. The observation set returned by a gateway.ServiceRequestContext can
	// guide the target service's QoS instance to update the quality data of
	// one or more endpoints.
	Broadcast() error
}

type Unmarshaller interface {
	// UnmarshalJSONObservationSet constructs an observation set by parsing
	// its JSON-formatted serialized form.
	UnmarshalJSONObservationSet([]byte) (ObservationSet, error)
}