labels property

Labels describing the operation.

Only the following labels are allowed: - Labels describing monitored resources as defined in the service configuration. - Default labels of metric values. When specified, labels defined in the metric value override these default. - The following labels defined by Google Cloud Platform: - cloud.googleapis.com/location describing the location where the operation happened, - servicecontrol.googleapis.com/user_agent describing the user agent of the API request, - servicecontrol.googleapis.com/service_agent describing the service used to handle the API request (e.g. ESP), - servicecontrol.googleapis.com/platform describing the platform where the API is served, such as App Engine, Compute Engine, or Kubernetes Engine.