Merge pull request #352 from kubeshop/feat/inject-ga-credentials

feat: inject analytics credentials into html
kubeshop · Apr 26, 2022 · 0ad9a72 · 0ad9a72
2 parents 167e904 + ccd486f
commit 0ad9a72
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Showing 2 changed files with 32 additions and 1 deletion.
diff --git a/server/main.go b/server/main.go
@@ -12,6 +12,7 @@ package main
 import (
 	"context"
 	"flag"
+	"html/template"
 	"io"
 	"log"
 	"net/http"
@@ -99,7 +100,7 @@ func main() {
 	fileMatcher := regexp.MustCompile(`\.[a-zA-Z]*$`)
 	router.PathPrefix("/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if !fileMatcher.MatchString(r.URL.Path) {
-			http.ServeFile(w, r, dir+"/index.html")
+			serveIndex(w, dir+"/index.html")
 		} else {
 			fileServer.ServeHTTP(w, r)
 		}
@@ -109,6 +110,29 @@ func main() {
 	log.Fatal(http.ListenAndServe(":8080", router))
 }
 
+type gaParams struct {
+	MeasurementId    string
+	AnalyticsEnabled bool
+}
+
+func serveIndex(w http.ResponseWriter, path string) {
+	templateData := gaParams{
+		MeasurementId:    os.Getenv("GOOGLE_ANALYTICS_MEASUREMENT_ID"),
+		AnalyticsEnabled: true,
+	}
+
+	tpl, err := template.ParseFiles(path)
+	if err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+
+	if err = tpl.Execute(w, templateData); err != nil {
+		http.Error(w, err.Error(), 500)
+		return
+	}
+}
+
 func initOtelTracing(ctx context.Context) *sdktrace.TracerProvider {
 	endpoint := os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT")
 	var (

diff --git a/web/public/index.html b/web/public/index.html
@@ -25,6 +25,13 @@
       Learn how to configure a non-root public URL by running `npm run build`.
     -->
     <title>Tracetest</title>
+    <script>
+      window.ENV = {
+        measurementId: "{{ .MeasurementId }}",
+        analyticsEnabled: "{{ .AnalyticsEnabled }}",
+        secretKey: {{ .SecretKey }}
+      };
+    </script>
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>