feat 链路追踪

config/config.go

@@ -17,6 +17,9 @@ type MetricConfig struct {
 		Address string `yaml:"address"`
 		Port    int32  `yaml:"port"`
 	} `yaml:"prometheus"`
+	Jaeger *struct {
+		Endpoint string `yaml:"endpoint"`
+	} `yaml:"jaeger"`
 }
 
 type DBConfig struct {