moving firebase objects to global

net/repeater/internal/api_notify.go

@@ -3,13 +3,11 @@ package repeater
 import (
 	"encoding/json"
 	"log"
-  "context"
 	"net/http"
 	"os"
 	"runtime"
 	"strings"
   "fmt"
-	firebase "firebase.google.com/go/v4"
 	"firebase.google.com/go/v4/messaging"
 )
 
@@ -34,16 +32,6 @@ func WriteResponse(w http.ResponseWriter, v interface{}) {
 
 //Notify proxies push notification to device
 func Notify(w http.ResponseWriter, r *http.Request) {
-  app, err := firebase.NewApp(context.Background(), nil)
-  if err != nil {
-    log.Fatalf("error initializing app: %v\n", err)
-  }
-
-  ctx := context.Background()
-	client, err := app.Messaging(ctx)
-	if err != nil {
-		log.Fatalf("error getting Messaging client: %v\n", err)
-	}
 
 	        var msg PushMessage
         if err := ParseRequest(r, w, &msg); err != nil {
@@ -60,9 +48,10 @@ func Notify(w http.ResponseWriter, r *http.Request) {
 
 	// Send a message to the device corresponding to the provided
 	// registration token.
-	response, err := client.Send(ctx, message)
+	response, err := FCMClient.Send(FCMContext, message)
 	if err != nil {
-		log.Fatalln(err)
+                ErrResponse(w, http.StatusBadRequest, err)
+                return
 	}
 	// Response is a message ID string.
 	fmt.Println("Successfully sent message:", response)

net/repeater/internal/routers.go

@@ -1,9 +1,13 @@
 package repeater
 
 import (
+	"firebase.google.com/go/v4/messaging"
+	firebase "firebase.google.com/go/v4"
 	"github.com/gorilla/mux"
 	"net/http"
 	"strings"
+	"context"
+	"log"
 )
 
 type route struct {
@@ -15,9 +19,25 @@ type route struct {
 
 type routes []route
 
+var FCMClient *messaging.Client
+var FCMContext context.Context
+
 //NewRouter allocate router for databag API
 func NewRouter() *mux.Router {
 
+	app, err := firebase.NewApp(context.Background(), nil)
+  if err != nil {
+    log.Fatalf("error initializing app: %v\n", err)
+  }
+
+  ctx := context.Background()
+        client, err := app.Messaging(ctx)
+        if err != nil {
+                log.Fatalf("error getting Messaging client: %v\n", err)
+        }
+	FCMClient = client
+	FCMContext = ctx
+
 	router := mux.NewRouter().StrictSlash(true)
 	for _, route := range endpoints {
 		var handler http.Handler