fix(alert_service): 修复表达式重复添加比较操作符的问题

检查表达式是否已包含比较操作符，避免重复添加
更新告警Webhook服务地址配置

Author: JaD1ng

internal/prometheus_adapter/config/prometheus_adapter.yml

@@ -10,7 +10,7 @@ prometheus:
 # 告警 Webhook 服务配置
 alert_webhook:
   # 监控告警模块地址
-  url: "http://alert-module:8080/v1/integrations/alertmanager/webhook"
+  url: "http://10.210.10.33:8080/v1/integrations/alertmanager/webhook"
   # 轮询间隔
   polling_interval: "10s"
 
@@ -24,4 +24,4 @@ alert_rules:
 # 服务器配置
 server:
   # 服务监听地址
-  bind_addr: "0.0.0.0:9999"
+  bind_addr: "0.0.0.0:9999"

internal/prometheus_adapter/service/alert_service.go

@@ -520,9 +520,16 @@ func (s *AlertService) buildExpression(rule *model.AlertRule, meta *model.AlertR
 		}
 	}
 
-	// 添加比较操作符和阈值
+	// 添加比较操作符和阈值（检查是否已经包含）
 	if meta.Threshold != 0 {
-		expr = fmt.Sprintf("%s %s %g", expr, rule.Op, meta.Threshold)
+		// 检查表达式是否已经包含比较操作符
+		hasComparison := strings.Contains(expr, " > ") || strings.Contains(expr, " < ") ||
+			strings.Contains(expr, " = ") || strings.Contains(expr, " != ") ||
+			strings.Contains(expr, " >= ") || strings.Contains(expr, " <= ")
+
+		if !hasComparison {
+			expr = fmt.Sprintf("%s %s %g", expr, rule.Op, meta.Threshold)
+		}
 	}
 
 	return expr