[I] [Bug] NoopSpan.End() Clears TracingContext After ignoreSuffix Filter Trigger, Causing TraceID Unavailability [skywalking]

[via GitHub]

hong-ke opened a new issue, #13436:
URL: https://github.com/apache/skywalking/issues/13436

   ### Search before asking
   
   - [x] I had searched in the 
[issues](https://github.com/apache/skywalking/issues?q=is%3Aissue) and found no 
similar issues.
   
   
   ### Apache SkyWalking Component
   
   Go Agent (apache/skywalking-go)
   
   ### What happened
   
   After the ignoreSuffix filtering mechanism is triggered, NoopSpan.End() will 
clear the entire TracingContext, making it impossible to obtain the TraceID 
subsequently.
   
   ### What you expected to happen
   
   plugins/core/span_noop.go
   `func (n *NoopSpan) End() {
       n.stackCount--
       if n.stackCount == 0 {
           GetSo11y(n.tracer).MeasureTracingContextCompletion(true)
           if ctx := getTracingContext(); ctx != nil {
               ctx.SaveActiveSpan(nil)  // Key: ActiveSpan cleared!
           }
       }
   }`
   
   ### How to reproduce
   
   Test code
   `package main
   
   import (
        "fmt"
        "net/http"
   
        _ "github.com/apache/skywalking-go"
        "github.com/apache/skywalking-go/toolkit/trace"
        "github.com/gin-gonic/gin"
   )
   
   func main() {
        router := gin.New()
   
        router.GET("/debug", testHandler)
        httpServer := &http.Server{
                Addr:    ":8080",
                Handler: router,
        }
        httpServer.ListenAndServe()
   }
   func testHandler(c *gin.Context) {
        fmt.Printf("testHandler before httpCall traceid: %v\n", 
trace.GetTraceID())
   
        httpCall()
   
        fmt.Printf("testHandler after httpCall traceid: %v\n", 
trace.GetTraceID())
        c.JSON(200, gin.H{
                "traceid": trace.GetTraceID(),
        })
   }
   
   func httpCall() {
        fmt.Printf("before httpCall traceid: %v\n", trace.GetTraceID())
   
        defer func() {
                fmt.Printf("after httpCall traceid: %v\n", trace.GetTraceID())
        }()
   
        _, err := 
http.Get("https://github.githubassets.com/assets/light-6448649c7147.css";)
        if err != nil {
                fmt.Printf("httpCall err: %v\n", err)
        }
   }
   `
   
   ### Anything else
   
   skywalking-go version 0.6.0
   
   ### Are you willing to submit a pull request to fix on your own?
   
   - [ ] Yes I am willing to submit a pull request on my own!
   
   ### Code of Conduct
   
   - [x] I agree to follow this project's [Code of 
Conduct](https://www.apache.org/foundation/policies/conduct)
   


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