Update Prometheus metrics. Bump (test) version.

docs/config.toml

@@ -54,5 +54,5 @@ pygmentsUseClasses = true
     weight = 7
 
 [params]
-    version = "3.0.0-test.2"
+    version = "3.0.0-test.3"
 

docs/content/overview/changelog.md

@@ -97,6 +97,10 @@ now used for selecting and configuring the packet-forwarder backends.
 The MQTT integration configuration has moved to the new `[integration...]`
 section. This allows for adding new integrations in the future besides MQTT.
 
+#### Prometheus metrics
+
+The Prometheus metrics have been updated / cleaned up.
+
 ## v2.7.1
 
 ### Bugfixes

internal/backend/basicstation/backend.go

@@ -112,7 +112,9 @@ func NewBackend(conf config.Config) (*Backend, error) {
 		b.websocketWrap(b.handleRouterInfo, w, r)
 	})
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		bsEventCounter("connect")
 		b.websocketWrap(b.handleGateway, w, r)
+		bsEventCounter("disconnect")
 	})
 
 	// using net.Listen makes it easier to test as we can bind to ":0" and
@@ -197,6 +199,7 @@ func (b *Backend) SendDownlinkFrame(df gw.DownlinkFrame) error {
 	var gatewayID lorawan.EUI64
 	copy(gatewayID[:], df.TxInfo.GatewayId)
 
+	bsWebsocketSendCounter("dnmsg")
 	if err := b.sendToGateway(gatewayID, pl); err != nil {
 		return errors.Wrap(err, "send to gateway error")
 	}
@@ -215,6 +218,7 @@ func (b *Backend) ApplyConfiguration(gwConfig gw.GatewayConfiguration) error {
 	var gatewayID lorawan.EUI64
 	copy(gatewayID[:], gwConfig.GatewayId)
 
+	bsWebsocketSendCounter("router_config")
 	if err := b.sendToGateway(gatewayID, rc); err != nil {
 		return errors.Wrap(err, "send router config to gateway error")
 	}
@@ -231,6 +235,7 @@ func (b *Backend) Close() error {
 }
 
 func (b *Backend) handleRouterInfo(r *http.Request, c *websocket.Conn) {
+	bsWebsocketReceiveCounter("router_info")
 	var req structs.RouterInfoRequest
 
 	if err := c.ReadJSON(&req); err != nil {
@@ -326,6 +331,8 @@ func (b *Backend) handleGateway(r *http.Request, c *websocket.Conn) {
 			continue
 		}
 
+		bsWebsocketReceiveCounter(string(msgType))
+
 		// handle message-type
 		switch msgType {
 		case structs.VersionMessage:
@@ -517,6 +524,7 @@ func (b *Backend) websocketWrap(handler func(*http.Request, *websocket.Conn), w
 
 	conn.SetReadDeadline(time.Now().Add(b.readTimeout))
 	conn.SetPongHandler(func(string) error {
+		bsWebsocketPingPongCounter("pong")
 		conn.SetReadDeadline(time.Now().Add(b.readTimeout))
 		return nil
 	})
@@ -528,6 +536,7 @@ func (b *Backend) websocketWrap(handler func(*http.Request, *websocket.Conn), w
 		for {
 			select {
 			case <-ticker.C:
+				bsWebsocketPingPongCounter("ping")
 				conn.SetWriteDeadline(time.Now().Add(b.writeTimeout))
 				if err := conn.WriteMessage(websocket.PingMessage, nil); err != nil {
 					log.WithError(err).Error("backend/basicstation: send ping message error")

internal/backend/basicstation/metrics.go

@@ -0,0 +1,56 @@
+package basicstation
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/brocaar/lora-gateway-bridge/internal/metrics"
+)
+
+var (
+	bsEventCounter             func(string)
+	bsWebsocketSendCounter     func(string)
+	bsWebsocketReceiveCounter  func(string)
+	bsWebsocketPingPongCounter func(string)
+)
+
+func init() {
+	ec := metrics.MustRegisterNewCounter(
+		"backend_basicstation_event",
+		"Per gateway event type counter.",
+		[]string{"event"},
+	)
+
+	wsc := metrics.MustRegisterNewCounter(
+		"backend_basicstation_websocket_send",
+		"Per message-type websocket write counter.",
+		[]string{"msgtype"},
+	)
+
+	wrc := metrics.MustRegisterNewCounter(
+		"backend_basicstation_websocket_receive",
+		"Per message-type websocket receive counter.",
+		[]string{"msgtype"},
+	)
+
+	ppc := metrics.MustRegisterNewCounter(
+		"backend_basicstation_websocket_ping_pong",
+		"Websocket Ping/Pong counter.",
+		[]string{"type"},
+	)
+
+	bsEventCounter = func(event string) {
+		ec(prometheus.Labels{"event": event})
+	}
+
+	bsWebsocketReceiveCounter = func(msgtype string) {
+		wsc(prometheus.Labels{"msgtype": msgtype})
+	}
+
+	bsWebsocketSendCounter = func(msgtype string) {
+		wrc(prometheus.Labels{"msgtype": msgtype})
+	}
+
+	bsWebsocketPingPongCounter = func(typ string) {
+		ppc(prometheus.Labels{"type": typ})
+	}
+}

internal/backend/semtechudp/backend.go

@@ -192,25 +192,25 @@ func (b *Backend) SendDownlinkFrame(frame gw.DownlinkFrame) error {
 // ApplyConfiguration applies the given configuration to the gateway
 // (packet-forwarder).
 func (b *Backend) ApplyConfiguration(config gw.GatewayConfiguration) error {
-	return gatewayConfigHandleTimer(func() error {
-		var gatewayID lorawan.EUI64
-		copy(gatewayID[:], config.GatewayId)
-
-		b.Lock()
-		var pfConfig *pfConfiguration
-		for i := range b.configurations {
-			if b.configurations[i].gatewayID == gatewayID {
-				pfConfig = &b.configurations[i]
-			}
-		}
-		b.Unlock()
+	eventCounter("configuration")
+
+	var gatewayID lorawan.EUI64
+	copy(gatewayID[:], config.GatewayId)
 
-		if pfConfig == nil {
-			return errGatewayDoesNotExist
+	b.Lock()
+	var pfConfig *pfConfiguration
+	for i := range b.configurations {
+		if b.configurations[i].gatewayID == gatewayID {
+			pfConfig = &b.configurations[i]
 		}
+	}
+	b.Unlock()
 
-		return b.applyConfiguration(*pfConfig, config)
-	})
+	if pfConfig == nil {
+		return errGatewayDoesNotExist
+	}
+
+	return b.applyConfiguration(*pfConfig, config)
 }
 
 func (b *Backend) applyConfiguration(pfConfig pfConfiguration, config gw.GatewayConfiguration) error {
@@ -315,11 +315,8 @@ func (b *Backend) sendPackets() error {
 			"protocol_version": p.data[0],
 		}).Debug("backend/semtechudp: sending udp packet to gateway")
 
-		err = gatewayWriteUDPTimer(pt.String(), func() error {
-			_, err := b.conn.WriteToUDP(p.data, p.addr)
-			return err
-		})
-
+		udpWriteCounter(pt.String())
+		_, err = b.conn.WriteToUDP(p.data, p.addr)
 		if err != nil {
 			log.WithFields(log.Fields{
 				"addr":             p.addr,
@@ -349,18 +346,18 @@ func (b *Backend) handlePacket(up udpPacket) error {
 		"protocol_version": up.data[0],
 	}).Debug("backend/semtechudp: received udp packet from gateway")
 
-	return gatewayHandleTimer(pt.String(), func() error {
-		switch pt {
-		case packets.PushData:
-			return b.handlePushData(up)
-		case packets.PullData:
-			return b.handlePullData(up)
-		case packets.TXACK:
-			return b.handleTXACK(up)
-		default:
-			return fmt.Errorf("backend/semtechudp: unknown packet type: %s", pt)
-		}
-	})
+	udpReadCounter(pt.String())
+
+	switch pt {
+	case packets.PushData:
+		return b.handlePushData(up)
+	case packets.PullData:
+		return b.handlePullData(up)
+	case packets.TXACK:
+		return b.handleTXACK(up)
+	default:
+		return fmt.Errorf("backend/semtechudp: unknown packet type: %s", pt)
+	}
 }
 
 func (b *Backend) handlePullData(up udpPacket) error {

internal/backend/semtechudp/metrics.go

@@ -7,50 +7,39 @@ import (
 )
 
 var (
-	gatewayEventCounter      func(string)
-	gatewayWriteUDPTimer     func(string, func() error) error
-	gatewayHandleTimer       func(string, func() error) error
-	gatewayConfigHandleTimer func(func() error) error
+	eventCounter    func(string)
+	udpWriteCounter func(string)
+	udpReadCounter  func(string)
 )
 
 func init() {
 	ec := metrics.MustRegisterNewCounter(
-		"gateway_event",
-		"Per event type counter.",
+		"backend_semtechudp_event",
+		"Per gateway event type counter.",
 		[]string{"event"},
 	)
 
-	wt := metrics.MustRegisterNewTimerWithError(
-		"gateway_udp_write",
-		"Per message-type UDP write duration tracking.",
-		[]string{"type"},
+	uwc := metrics.MustRegisterNewCounter(
+		"backend_semtechudp_udp_write",
+		"UDP packets written by packet type.",
+		[]string{"packet_type"},
 	)
 
-	ht := metrics.MustRegisterNewTimerWithError(
-		"gateway_udp_received_handle",
-		"Per message-type received UDP handling duration tracking.",
-		[]string{"type"},
+	urc := metrics.MustRegisterNewCounter(
+		"backend_semtechudp_udp_read",
+		"UDP packets read by packet type.",
+		[]string{"packet_type"},
 	)
 
-	ch := metrics.MustRegisterNewTimerWithError(
-		"gateway_config_handle",
-		"Tracks the duration of configuration handling.",
-		[]string{},
-	)
-
-	gatewayEventCounter = func(event string) {
+	eventCounter = func(event string) {
 		ec(prometheus.Labels{"event": event})
 	}
 
-	gatewayWriteUDPTimer = func(mType string, f func() error) error {
-		return wt(prometheus.Labels{"type": mType}, f)
-	}
-
-	gatewayHandleTimer = func(mType string, f func() error) error {
-		return ht(prometheus.Labels{"type": mType}, f)
+	udpWriteCounter = func(pt string) {
+		uwc(prometheus.Labels{"packet_type": pt})
 	}
 
-	gatewayConfigHandleTimer = func(f func() error) error {
-		return ch(prometheus.Labels{}, f)
+	udpReadCounter = func(pt string) {
+		urc(prometheus.Labels{"packet_type": pt})
 	}
 }

internal/backend/semtechudp/registry.go

@@ -54,7 +54,7 @@ func (c *gateways) set(gatewayID lorawan.EUI64, gw gateway) error {
 
 	_, ok := c.gateways[gatewayID]
 	if !ok {
-		gatewayEventCounter("register_gateway")
+		eventCounter("connect")
 		c.connectChan <- gatewayID
 	}
 	c.gateways[gatewayID] = gw
@@ -68,7 +68,7 @@ func (c *gateways) cleanup() error {
 
 	for gatewayID := range c.gateways {
 		if c.gateways[gatewayID].lastSeen.Before(time.Now().Add(gatewayCleanupDuration)) {
-			gatewayEventCounter("unregister_gateway")
+			eventCounter("disconnect")
 			c.disconnectChan <- gatewayID
 			delete(c.gateways, gatewayID)
 		}