prometheus

type Client interface {
	// Metadata returns the first occurrence of metadata about metrics currently scraped by the metric name.
	Metadata(ctx context.Context, metric string) (v1.Metadata, error)
	// AllMetadata returns metadata about metrics currently scraped for all existing metrics.
	AllMetadata(ctx context.Context) (map[string][]v1.Metadata, error)
	// LabelNames returns all the unique label names present in the block in sorted order.
	// If a metric is provided, then it will return all unique label names linked to the metric during a predefined period of time
	LabelNames(ctx context.Context, metricName string) ([]string, error)
	// LabelValues performs a query for the values of the given label.
	LabelValues(ctx context.Context, label string) ([]model.LabelValue, error)
	// ChangeDataSource is used if the prometheusURL is changing.
	// The client should re init its own parameter accordingly if necessary
	ChangeDataSource(prometheusURL string) error
	// GetURL is returning the url used to contact the prometheus server
	// In case the instance is used directly in Prometheus, it should be the externalURL
	GetURL() string
}