metrics

type CounterMetric interface {
	// Inc increments the counter
	Inc()
	// Add adds to the counter
	Add(float64)
}

type GaugeMetric interface {
	// Set sets the gauge to the given value
	Set(float64)
}

type Metrics interface {
	// Gauge returns a new Gauge metric. Gauges should be used for values that fluctuate over time (for example, duration of a task)
	Gauge(opts Options) GaugeMetric
	// Counter returns a new Counter metric. Counters should be used for values that accumulate over time (for example, number of times a task is executed)
	Counter(opts Options) CounterMetric
	// TaskCompletion is a convenience function that records the completion of as task as both a counter
	// (indicating the task completed) and a gauge (representing how long the task took to complete):
	// <name>_counter
	// <name>_duration_seconds
	// Both metrics will include an "ok" label that will be "true" if err is nil, "false" otherwise
	TaskCompletion(opts Options, duration time.Duration, err error)
	// WithLabels returns a copy of this Metrics instance with an additional set of configured labels
	WithLabels(map[string]string) Metrics
	// contains filtered or unexported methods
}

type Options struct {
	// Name of the metric -- will be automatically prefixed with "thelma_"
	Name string
	// Help optional help text for the metric
	Help string
	// Labels optional set of labels to apply to the metric
	Labels map[string]string
}