stackdriver

type BucketFn func([]string) []float64

type Config struct {
	// The Google Cloud Project ID to publish metrics to.
	// Optional. GCP instance metadata is used to determine the ProjectID if
	// not set.
	ProjectID string
	// The label extractor provides a way to rewrite metric key into a new key
	// with multiple labels. This is useful if the instrumented code includes
	// variable parameters within a metric name.
	// Optional. Defaults to DefaultLabelExtractor.
	LabelExtractor ExtractLabelsFn
	// Prefix of the metrics recorded. Defaults to "go-metrics/" so a metric
	// "foo" will be recorded as "custom.googleapis.com/go-metrics/foo".
	Prefix *string
	// The bucketer is used to determine histogram bucket boundaries
	// for the sampled metrics. This will execute before the LabelExtractor.
	// Optional. Defaults to DefaultBucketer.
	Bucketer BucketFn
	// The interval between sampled metric points. Must be > 1 minute.
	// https://cloud.google.com/monitoring/custom-metrics/creating-metrics#writing-ts
	// Optional. Defaults to 1 minute.
	ReportingInterval time.Duration

	// The location of the running task. See:
	// https://cloud.google.com/monitoring/api/resources#tag_generic_task
	// Optional. GCP instance metadata is used to determine the location,
	// otherwise it defaults to 'global'.
	Location string
	// The namespace for the running task. See:
	// https://cloud.google.com/monitoring/api/resources#tag_generic_task
	// Optional. Defaults to 'default'.
	Namespace string
	// The job name for the running task. See:
	// https://cloud.google.com/monitoring/api/resources#tag_generic_task
	// Optional. Defaults to the running program name.
	Job string
	// The task ID for the running task. See:
	// https://cloud.google.com/monitoring/api/resources#tag_generic_task
	// Optional. Defaults to a combination of hostname+pid.
	TaskID string

	// the amount of time that local counter will retain increments.
	// if 0 the window will be infinite
	CounterWindow time.Duration

	// Debug logging. Errors are always logged to stderr, but setting this to
	// true will log additional information that is helpful when debugging
	// errors.
	// Optional. Defaults to false.
	DebugLogs bool

	// MonitoredResource identifies the machine/service/resource that is
	// monitored. Different possible settings are defined here:
	// https://cloud.google.com/monitoring/api/resources
	//
	// Setting a nil MonitoredResource will run a defaultMonitoredResource
	// function.
	MonitoredResource *monitoredrespb.MonitoredResource

	// Logger that can be injected for custom log formatting.
	Logger Logger
}

type ExtractLabelsFn func([]string, string) ([]string, []metrics.Label, error)

type Logger interface {
	Printf(format string, v ...interface{})
	Println(v ...interface{})
}

type Sink struct {
	// contains filtered or unexported fields
}