fix: channel affinity (#2799)

* fix: channel affinity log styles

* fix: Issue with incorrect data storage when switching key sources

* feat: support not retrying after a single rule configuration fails

* fix: render channel affinity tooltip as multiline content

* feat: channel affinity cache hit

* fix: prevent ChannelAffinityUsageCacheModal infinite loading and hide data before fetch

* chore: format backend with gofmt and frontend with prettier/eslint autofix

controller/channel_affinity_cache.go

@@ -58,3 +58,31 @@ func ClearChannelAffinityCache(c *gin.Context) {
 		},
 	})
 }
+
+func GetChannelAffinityUsageCacheStats(c *gin.Context) {
+	ruleName := strings.TrimSpace(c.Query("rule_name"))
+	usingGroup := strings.TrimSpace(c.Query("using_group"))
+	keyFp := strings.TrimSpace(c.Query("key_fp"))
+
+	if ruleName == "" {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"success": false,
+			"message": "missing param: rule_name",
+		})
+		return
+	}
+	if keyFp == "" {
+		c.JSON(http.StatusBadRequest, gin.H{
+			"success": false,
+			"message": "missing param: key_fp",
+		})
+		return
+	}
+
+	stats := service.GetChannelAffinityUsageCacheStats(ruleName, usingGroup, keyFp)
+	c.JSON(http.StatusOK, gin.H{
+		"success": true,
+		"message": "",
+		"data":    stats,
+	})
+}