Add: external controller

hub/server.go

@@ -0,0 +1,83 @@
+package hub
+
+import (
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/Dreamacro/clash/tunnel"
+
+	"github.com/go-chi/chi"
+	"github.com/go-chi/render"
+	log "github.com/sirupsen/logrus"
+)
+
+var (
+	tun = tunnel.GetInstance()
+)
+
+type Traffic struct {
+	Up   int64 `json:"up"`
+	Down int64 `json:"down"`
+}
+
+type Log struct {
+	Type    string `json:"type"`
+	Payload string `json:"payload"`
+}
+
+type Error struct {
+	Error string `json:"error"`
+}
+
+func NewHub(addr string) {
+	r := chi.NewRouter()
+
+	r.Get("/traffic", traffic)
+	r.Get("/logs", getLogs)
+
+	err := http.ListenAndServe(addr, r)
+	if err != nil {
+		log.Fatalf("External controller error: %s", err.Error())
+	}
+}
+
+func traffic(w http.ResponseWriter, r *http.Request) {
+	render.Status(r, http.StatusOK)
+
+	tick := time.NewTicker(time.Second)
+	t := tun.Traffic()
+	for range tick.C {
+		up, down := t.Now()
+		if err := json.NewEncoder(w).Encode(Traffic{
+			Up:   up,
+			Down: down,
+		}); err != nil {
+			break
+		}
+		w.(http.Flusher).Flush()
+	}
+}
+
+func getLogs(w http.ResponseWriter, r *http.Request) {
+	src := tun.Log()
+	sub, err := src.Subscribe()
+	defer src.UnSubscribe(sub)
+	if err != nil {
+		render.Status(r, http.StatusInternalServerError)
+		render.JSON(w, r, Error{
+			Error: err.Error(),
+		})
+	}
+	render.Status(r, http.StatusOK)
+	for elm := range sub {
+		log := elm.(tunnel.Log)
+		if err := json.NewEncoder(w).Encode(Log{
+			Type:    log.Type(),
+			Payload: log.Payload,
+		}); err != nil {
+			break
+		}
+		w.(http.Flusher).Flush()
+	}
+}