Stats management utilities

proxy/proxy.go

@@ -39,7 +39,7 @@ func (p *Proxy) Serve() error {
 
 func (p *Proxy) accept(conn net.Conn) {
 	connID := uuid.NewV4().String()
-	log := zap.S().With("connection_id", connID)
+	log := zap.S().With("connection_id", connID).Named("main")
 
 	defer func() {
 		conn.Close()

stats/channels.go

@@ -0,0 +1,147 @@
+package stats
+
+import (
+	"net"
+	"sync/atomic"
+	"time"
+
+	"github.com/9seconds/mtg/mtproto"
+)
+
+const (
+	crashesChanLength     = 1
+	connectionsChanLength = 20
+	trafficChanLength     = 5000
+)
+
+var (
+	CrashesChan     = make(chan struct{}, crashesChanLength)
+	ConnectionsChan = make(chan *connectionData, connectionsChanLength)
+	TrafficChan     = make(chan *trafficData, trafficChanLength)
+)
+
+type connectionData struct {
+	connectionType mtproto.ConnectionType
+	addr           *net.TCPAddr
+	connected      bool
+}
+
+type trafficData struct {
+	traffic int
+	ingress bool
+}
+
+func crashManager() {
+	for range CrashesChan {
+		instance.mutex.RLock()
+
+		instance.Crashes++
+
+		instance.mutex.RUnlock()
+	}
+}
+
+func connectionManager() {
+	for event := range ConnectionsChan {
+		instance.mutex.RLock()
+
+		isIPv4 := event.addr.IP.To4() == nil
+		var inc uint32 = 1
+		if !event.connected {
+			inc = ^uint32(0)
+		}
+
+		switch event.connectionType {
+		case mtproto.ConnectionTypeAbridged:
+			if isIPv4 {
+				atomic.AddUint32(&instance.ActiveConnections.Abridged.IPv4, inc)
+				if event.connected {
+					atomic.AddUint32(&instance.AllConnections.Abridged.IPv4, inc)
+				}
+			} else {
+				atomic.AddUint32(&instance.ActiveConnections.Abridged.IPv6, inc)
+				if event.connected {
+					atomic.AddUint32(&instance.AllConnections.Abridged.IPv6, inc)
+				}
+			}
+		default:
+			if isIPv4 {
+				atomic.AddUint32(&instance.ActiveConnections.Intermediate.IPv4, inc)
+				if event.connected {
+					atomic.AddUint32(&instance.AllConnections.Intermediate.IPv4, inc)
+				}
+			} else {
+				atomic.AddUint32(&instance.ActiveConnections.Intermediate.IPv6, inc)
+				if event.connected {
+					atomic.AddUint32(&instance.AllConnections.Intermediate.IPv6, inc)
+				}
+			}
+		}
+
+		instance.mutex.RUnlock()
+	}
+}
+
+func trafficManager() {
+	speedChan := time.Tick(time.Second)
+
+	for {
+		select {
+		case event := <-TrafficChan:
+			instance.mutex.RLock()
+
+			if event.ingress {
+				instance.Traffic.Ingress += trafficValue(event.traffic)
+				instance.speedCurrent.Ingress += trafficSpeedValue(event.traffic)
+			} else {
+				instance.Traffic.Egress += trafficValue(event.traffic)
+				instance.speedCurrent.Egress += trafficSpeedValue(event.traffic)
+			}
+
+			instance.mutex.RUnlock()
+		case <-speedChan:
+			instance.mutex.RLock()
+
+			instance.Speed.Ingress = instance.speedCurrent.Ingress
+			instance.Speed.Egress = instance.speedCurrent.Egress
+			instance.speedCurrent.Ingress = trafficSpeedValue(0)
+			instance.speedCurrent.Egress = trafficSpeedValue(0)
+
+			instance.mutex.RUnlock()
+		}
+	}
+}
+
+func NewCrash() {
+	CrashesChan <- struct{}{}
+}
+
+func ClientConnected(connectionType mtproto.ConnectionType, addr *net.TCPAddr) {
+	ConnectionsChan <- &connectionData{
+		connectionType: connectionType,
+		addr:           addr,
+		connected:      true,
+	}
+}
+
+func ClientDisconnected(connectionType mtproto.ConnectionType, addr *net.TCPAddr) {
+	ConnectionsChan <- &connectionData{
+		connectionType: connectionType,
+		addr:           addr,
+		connected:      false,
+	}
+}
+
+func IngressTraffic(traffic int) {
+	TrafficChan <- &trafficData{
+		traffic: traffic,
+		ingress: true,
+	}
+}
+
+func EgressTraffic(traffic int) {
+	TrafficChan <- &trafficData{
+		traffic: traffic,
+		ingress: false,
+	}
+}

stats/server.go

@@ -15,10 +15,13 @@ func Start(conf *config.Config) {
 	instance = &stats{
 		URLs:   conf.GetURLs(),
 		Uptime: uptime(time.Now()),
-		speedCurrent: &speed{},
 		mutex:  &sync.RWMutex{},
 	}
 
+	go crashManager()
+	go connectionManager()
+	go trafficManager()
+
 	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Content-Type", "application/json")
 

stats/stats.go

@@ -49,9 +49,31 @@ func (t trafficSpeedValue) MarshalJSON() ([]byte, error) {
 }
 
 type connections struct {
-	All          uint32 `json:"all"`
+	All          connectionType `json:"all"`
-	Abridged     uint32 `json:"abridged"`
+	Abridged     connectionType `json:"abridged"`
-	Intermediate uint32 `json:"intermediate"`
+	Intermediate connectionType `json:"intermediate"`
+}
+
+func (c connections) MarshalJSON() ([]byte, error) {
+	c.All.IPv4 = c.Abridged.IPv4 + c.Intermediate.IPv4
+	c.All.IPv6 = c.Abridged.IPv6 + c.Intermediate.IPv6
+
+	value := struct {
+		All          connectionType `json:"all"`
+		Abridged     connectionType `json:"abridged"`
+		Intermediate connectionType `json:"intermediate"`
+	}{
+		All:          c.All,
+		Abridged:     c.Abridged,
+		Intermediate: c.Intermediate,
+	}
+
+	return json.Marshal(value)
+}
+
+type connectionType struct {
+	IPv6 uint32 `json:"ipv6"`
+	IPv4 uint32 `json:"ipv4"`
 }
 
 type traffic struct {
@@ -71,7 +93,8 @@ type stats struct {
 	Traffic           traffic       `json:"traffic"`
 	Speed             speed         `json:"speed"`
 	Uptime            uptime        `json:"uptime"`
+	Crashes           uint32        `json:"crashes"`
 
-	speedCurrent *speed
+	speedCurrent speed
 	mutex        *sync.RWMutex
 }