42 lines
815 B
Go
42 lines
815 B
Go
package middleware
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import (
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"context"
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"net/http"
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"os"
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"path/filepath"
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"time"
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"github.com/Xe/ln"
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"golang.org/x/net/trace"
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)
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// Trace adds go stdlib tracing to this http handler.
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func Trace(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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sp := trace.New(filepath.Base(os.Args[0]), "http://"+r.Host+r.RequestURI)
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defer sp.Finish()
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ctx, cancel := context.WithTimeout(r.Context(), 30*time.Second)
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defer cancel()
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ctx = trace.NewContext(ctx, sp)
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f := ln.F{
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"method": r.Method,
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"path": r.URL.Path,
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"remote_addr": r.RemoteAddr,
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"user_agent": r.UserAgent(),
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}
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next.ServeHTTP(w, r.WithContext(ctx))
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ws, ok := w.(interface {
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Status() int
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})
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if ok {
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f["status"] = ws.Status()
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}
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ln.Log(ctx, f)
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})
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}
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