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Add API endpoint to get amount of open connections #21

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16 changes: 16 additions & 0 deletions mjpeg-proxy.go
Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,7 @@ var (
frameTimeout time.Duration
stopDelay time.Duration
tcpSendBuffer int
pubSubs []PubSub
)

type configSource struct {
Expand All @@ -55,6 +56,7 @@ func startSource(source, username, password, proxyUrl string, digest bool, rate
}
pubSub := NewPubSub(proxyUrl, chunker)
pubSub.Start()
pubSubs = append(pubSubs, *pubSub)

fmt.Printf("chunker[%s]: serving from %s\n", proxyUrl, source)
http.Handle(proxyUrl, pubSub)
Expand Down Expand Up @@ -138,6 +140,19 @@ func listenAndServe(addr string) error {
return server.Serve(listener)
}

func infoEndpoint(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")

data := map[string]interface{}{}
connections := map[string]interface{}{}

for _, pubSub := range pubSubs {
connections[pubSub.id] = len(pubSub.subscribers)
}
data["connections"] = connections
json.NewEncoder(w).Encode(data)
}

func main() {
source := flag.String("source", "http://example.com/img.mjpg", "source uri")
username := flag.String("username", "", "source uri username")
Expand Down Expand Up @@ -169,6 +184,7 @@ func main() {
os.Exit(1)
}

http.HandleFunc("/api/info", infoEndpoint)
err = listenAndServe(*bind)
if err != nil {
fmt.Println("server:", err)
Expand Down