Struct DERPExpvarCollector

tailnet/derpmetrics/metrics.go:13–46

DERPExpvarCollector exports a DERP server's expvar stats as properly typed Prometheus metrics.

// DERPExpvarCollector exports a DERP server's expvar stats as
// properly typed Prometheus metrics.
type DERPExpvarCollector struct {
	server *derp.Server

	// Counters.
	accepts              *prometheus.Desc
	bytesReceived        *prometheus.Desc
	bytesSent            *prometheus.Desc
	packetsReceived      *prometheus.Desc
	packetsSent          *prometheus.Desc
	packetsDropped       *prometheus.Desc
	packetsForwardedIn   *prometheus.Desc
	packetsForwardedOut  *prometheus.Desc
	homeMovesIn          *prometheus.Desc
	homeMovesOut         *prometheus.Desc
	gotPing              *prometheus.Desc
	sentPong             *prometheus.Desc
	peerGoneDisconnected *prometheus.Desc
	peerGoneNotHere      *prometheus.Desc
	unknownFrames        *prometheus.Desc

	// Labeled counters.
	packetsDroppedByReason *prometheus.Desc
	packetsDroppedByType   *prometheus.Desc
	packetsReceivedByKind  *prometheus.Desc

	// Gauges.
	connections     *prometheus.Desc
	homeConnections *prometheus.Desc
	clientsTotal    *prometheus.Desc
	clientsLocal    *prometheus.Desc
	clientsRemote   *prometheus.Desc
	watchers        *prometheus.Desc
	avgQueueDurMS   *prometheus.Desc
}

// NewDERPExpvarCollector creates a Prometheus collector that reads
// stats from a DERP server's expvar on each scrape.