ignore any error that has stop_youtube

tools/errortracker/app.yaml

@@ -1,5 +1,5 @@
 application: amp-error-reporting
-version: 15
+version: 16
 runtime: go
 api_version: go1
 

tools/errortracker/errortracker.go

@@ -104,7 +104,7 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	// Fill query params into JSON struct.
 	line, _ := strconv.Atoi(r.URL.Query().Get("l"))
 	errorType := "default"
-	isUserError := false;
+	isUserError := false
 	if r.URL.Query().Get("a") == "1" {
 		errorType = "assert"
 		isUserError = true
@@ -116,8 +116,8 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	// docs) we log as "ERROR".
 	isCdn := false
 	if strings.HasPrefix(r.Referer(), "https://cdn.ampproject.org/") ||
-			strings.Contains(r.Referer(), ".cdn.ampproject.org/") ||
-			strings.Contains(r.Referer(), ".ampproject.net/") {
+		strings.Contains(r.Referer(), ".cdn.ampproject.org/") ||
+		strings.Contains(r.Referer(), ".ampproject.net/") {
 		severity = "ERROR"
 		level = logging.Error
 		errorType += "-cdn"
@@ -128,7 +128,7 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	is3p := false
 	runtime := r.URL.Query().Get("rt")
 	if runtime != "" {
-		errorType += "-" + runtime;
+		errorType += "-" + runtime
 		if runtime == "inabox" {
 			severity = "ERROR"
 			level = logging.Error
@@ -144,10 +144,10 @@ func handle(w http.ResponseWriter, r *http.Request) {
 			errorType += "-1p"
 		}
 	}
-	isCanary := false;
+	isCanary := false
 	if r.URL.Query().Get("ca") == "1" {
 		errorType += "-canary"
-		isCanary = true;
+		isCanary = true
 	}
 	if r.URL.Query().Get("ex") == "1" {
 		errorType += "-expected"
@@ -156,15 +156,15 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	throttleRate := 0.01
 
 	if isCanary {
-		throttleRate = 1.0  // Explicitly log all canary errors.
+		throttleRate = 1.0 // Explicitly log all canary errors.
 	} else if is3p {
 		throttleRate = 0.1
 	} else if isCdn {
 		throttleRate = 0.1
 	}
 
 	if isUserError {
-		throttleRate = throttleRate / 10;
+		throttleRate = throttleRate / 10
 	}
 
 	if !(sample <= throttleRate) {
@@ -194,6 +194,13 @@ func handle(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if IsFilteredMessageOrException(event) {
+		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		w.WriteHeader(http.StatusNoContent)
+		fmt.Fprintln(w, "IGNORE\n")
+		return
+	}
+
 	// Don't log testing traffic in production
 	if event.Version == "$internalRuntimeVersion$" {
 		w.WriteHeader(http.StatusNoContent)
@@ -228,9 +235,23 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	if r.URL.Query().Get("debug") == "1" {
 		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 		w.WriteHeader(http.StatusOK)
-		fmt.Fprintln(w, "OK\n");
-		fmt.Fprintln(w, event);
+		fmt.Fprintln(w, "OK\n")
+		fmt.Fprintln(w, event)
 	} else {
 		w.WriteHeader(http.StatusNoContent)
 	}
 }
+
+func IsFilteredMessageOrException(event *ErrorEvent) bool {
+	filteredMessages := [...]string{
+		"stop_youtube",
+		"null%20is%20not%20an%20object%20(evaluating%20%27elt.parentNode%27)",
+	}
+	for _, msg := range filteredMessages {
+		if strings.Contains(event.Message, msg) ||
+			strings.Contains(event.Exception, msg) {
+			return true
+		}
+	}
+	return false
+}