jaeger.go

package middleware

//
//import (
//	"github.com/gin-gonic/gin"
//	"github.com/opentracing/opentracing-go"
//	"github.com/opentracing/opentracing-go/ext"
//	"github.com/spf13/viper"
//	"go-gin-api/app/config"
//	"go-gin-api/app/util/jaeger_trace"
//	"io"
//)
//
//var Tracer opentracing.Tracer
//var Closer io.Closer
//var Error error
//
//var ParentSpan opentracing.Span
//
//func SetUp() gin.HandlerFunc {
//
//	return func(c *gin.Context) {
//		if viper.GetInt("jaeger_open") == 1 {
//			Tracer, Closer, Error = jaeger_trace.NewJaegerTracer(config.AppName, config.JaegerHostPort)
//			defer Closer.Close()
//
//			spCtx, err := opentracing.GlobalTracer().Extract(opentracing.HTTPHeaders,
//			opentracing.HTTPHeadersCarrier(c.Request.Header))
//			if err != nil {
//				ParentSpan = Tracer.StartSpan(c.Request.URL.Path)
//				defer ParentSpan.Finish()
//			} else {
//				ParentSpan = opentracing.StartSpan(
//					c.Request.URL.Path,
//					opentracing.ChildOf(spCtx),
//					opentracing.Tag{Key: string(ext.Component), Value: "HTTP"},
//					ext.SpanKindRPCServer,
//				)
//				defer ParentSpan.Finish()
//			}
//		}
//		c.Next()
//	}
//}