58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
/*
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* @Date: 2021-06-13 23:33:05
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* @LastEditors: viletyy
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* @LastEditTime: 2021-06-14 20:45:47
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* @FilePath: /potato/internal/middleware/tracer.go
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*/
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package middleware
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import (
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"context"
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"github.com/gin-gonic/gin"
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"github.com/opentracing/opentracing-go"
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"github.com/opentracing/opentracing-go/ext"
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"github.com/uber/jaeger-client-go"
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"github.com/viletyy/potato/global"
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)
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func Tracing() gin.HandlerFunc {
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return func(c *gin.Context) {
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var newCtx context.Context
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var span opentracing.Span
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spanCtx, err := opentracing.GlobalTracer().Extract(
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opentracing.HTTPHeaders,
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opentracing.HTTPHeadersCarrier(c.Request.Header),
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)
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if err != nil {
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span, newCtx = opentracing.StartSpanFromContextWithTracer(
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c.Request.Context(),
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global.GO_TRACER,
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c.Request.URL.Path,
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)
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} else {
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span, newCtx = opentracing.StartSpanFromContextWithTracer(
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c.Request.Context(),
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global.GO_TRACER,
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c.Request.URL.Path,
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opentracing.ChildOf(spanCtx),
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opentracing.Tag{Key: string(ext.Component), Value: "HTTP"},
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)
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}
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defer span.Finish()
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var traceID string
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var spanID string
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var spanContext = span.Context()
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switch spanContext.(type) {
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case jaeger.SpanContext:
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jaegerContext := spanContext.(jaeger.SpanContext)
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traceID = jaegerContext.TraceID().String()
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spanID = jaegerContext.SpanID().String()
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}
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c.Set("X-Trace-ID", traceID)
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c.Set("X-Span-ID", spanID)
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c.Request = c.Request.WithContext(newCtx)
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c.Next()
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}
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}
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