func()

in hub/hub.go [273:316]

• 36 lines of code
• 3 McCabe index (conditional complexity)

func (c *MetricHub) Debug(ctx echo.Context) error {
	verbose := ctx.QueryParam("verbose")

	c.updateCountStats()
	hostname, _ := os.Hostname()
	var limitValue, utilizationValue string
	if c.limit <= 0 {
		limitValue = "None"
		utilizationValue = "0"
	} else {
		limitValue = strconv.Itoa(c.limit)
		utilizationValue = strconv.FormatFloat(float64(c.stats.currentCountDatapoints)*100/float64(c.limit), 'f', 2, 64)
	}

	debugString := fmt.Sprintf(`Prometheus Edge Hub running on %s
Hub Limit:       %s
Hub Utilization: %s%%

Last Scrape: %d
	Scrape Size: %d
	Number of Familes: %d

Last HTTP Receive: %d
	Receive Size: %d
	Number of Families: %d

Last GRPC Receive: %d
    Receive Size: %d
	Number of families: %d

Current Count Families:   %d
Current Count Series:     %d
Current Count Datapoints: %d `, hostname, limitValue, utilizationValue,
		c.stats.lastScrapeTime, c.stats.lastScrapeSize, c.stats.lastScrapeNumFamilies,
		c.stats.lastHTTPReceiveTime, c.stats.lastHTTPReceiveSize, c.stats.lastHTTPReceiveNumFamilies,
		c.stats.lastGRPCReceiveTime, c.stats.lastGRPCReceiveSize, c.stats.lastGRPCReceiveNumFamilies,
		c.stats.currentCountFamilies, c.stats.currentCountSeries, c.stats.currentCountDatapoints)

	if verbose != "" {
		debugString += fmt.Sprintf("\n\nCurrent Exposition Text:\n%s\n", c.exposeMetrics(c.metricFamiliesByName, scrapeWorkerPoolSize))
	}

	return ctx.String(http.StatusOK, debugString)
}