metrics.go

// metriks is the local instance of metrics.Metrics
var metriks *metrics.Metrics

// lock synchronizes access to the metrics sink
var lock = sync.RWMutex{}

// NewMetrics initializes goa's metrics instance with the supplied
// configuration and metrics sink
func SetMetrics(m metrics.Metrics) {
	lock.Lock()
	defer lock.Unlock()
	metriks = m
}

// AddSample adds a sample to an aggregated metric
// reporting count, min, max, mean, and std deviation
// Usage:
//     AddSample([]string{"my","namespace","key"}, 15.0)
func AddSample(key []string, val float32) {
	lock.RLock()
	defer lock.RUnlock()
	if metriks != nil {
		metriks.AddSample(key, val)
	}
}

// ...