remove tag useragent from prometheus metrics

handlers/badges.go

@@ -32,12 +32,12 @@ var (
 	badgeRequested = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "badge_requested_total",
 		Help: "The total request number of badges",
-	}, []string{"badge", "useragent", "ip"})
+	}, []string{"badge", "ip"})
 
 	aria2UIImageCounter = promauto.NewCounterVec(prometheus.CounterOpts{
 		Name: "aria2_ui_docker_counter",
 		Help: "The counter for junv's aria2-ui docker image updates checker",
-	}, []string{"badge", "version", "useragent", "ip"})
+	}, []string{"badge", "version", "ip"})
 
 	badgeGenerationTime = promauto.NewHistogram(prometheus.HistogramOpts{
 		Name: "badge_generation_time",
@@ -227,15 +227,13 @@ func (handler *BadgesHandler) generateBadgeValue(c *gin.Context) error {
 
 	if !internalRequest {
 		badgeRequested.With(map[string]string{
-			"badge":     queryName,
-			"useragent": c.Request.UserAgent(),
-			"ip":        utils.GetUserIP(c.Request),
+			"badge": queryName,
+			"ip":    utils.GetUserIP(c.Request),
 		}).Inc()
 		aria2UIImageCounter.With(map[string]string{
-			"badge":     queryName,
-			"version":   c.Query("version"),
-			"useragent": c.Request.UserAgent(),
-			"ip":        utils.GetUserIP(c.Request),
+			"badge":   queryName,
+			"version": c.Query("version"),
+			"ip":      utils.GetUserIP(c.Request),
 		}).Inc()
 	}
 	c.String(http.StatusOK, "%s", metric.TextValue)
@@ -311,9 +309,8 @@ func (handler *BadgesHandler) generateSVG(c *gin.Context, colorScheme ColorSchem
 	if !internalRequest {
 		badgeGenerationTime.Observe(float64(time.Since(startTime).Microseconds()))
 		badgeRequested.With(map[string]string{
-			"badge":     queryName,
-			"useragent": c.Request.UserAgent(),
-			"ip":        utils.GetUserIP(c.Request),
+			"badge": queryName,
+			"ip":    utils.GetUserIP(c.Request),
 		}).Inc()
 	}