refactor: extract metrics-collector from fission-console, bump console to v1.3.12

metrics-collector/cmd/server/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"os"
+	"time"
+
+	"metrics-collector/internal/api"
+	"metrics-collector/ui"
+)
+
+func main() {
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8091"
+	}
+
+	srv := api.NewServer()
+
+	mux := http.NewServeMux()
+	mux.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
+		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		_, _ = w.Write([]byte("ok\n"))
+	})
+	mux.HandleFunc("/metrics", srv.HandleMetrics)
+	mux.Handle("/", ui.Handler())
+
+	httpSrv := &http.Server{
+		Addr:         ":" + port,
+		Handler:      mux,
+		ReadTimeout:  15 * time.Second,
+		WriteTimeout: 15 * time.Second,
+	}
+
+	log.Printf("metrics-collector listening on :%s", port)
+	if err := httpSrv.ListenAndServe(); err != nil {
+		log.Fatalf("listen: %v", err)
+	}
+}