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26 lines
590 B
Go
26 lines
590 B
Go
package handler
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import (
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"net/http"
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"zero/core/logx"
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"zero/core/sysx"
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"zero/core/trace"
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)
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func TracingHandler(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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carrier, err := trace.Extract(trace.HttpFormat, r.Header)
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// ErrInvalidCarrier means no trace id was set in http header
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if err != nil && err != trace.ErrInvalidCarrier {
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logx.Error(err)
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}
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ctx, span := trace.StartServerSpan(r.Context(), carrier, sysx.Hostname(), r.RequestURI)
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defer span.Finish()
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r = r.WithContext(ctx)
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next.ServeHTTP(w, r)
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})
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}
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