Hi,
I had implemented and blogged the technique to properly wrap
http.ResponseWriter:
http://ymmt2005.hatenablog.com/entry/2016/09/01/How_to_hack_Go%27s_http_Server_correctly
type StdResponseWriter interface {
http.ResponseWriter
io.ReaderFrom
http.Flusher
http.CloseNotifier
http.Hijacker
WriteString(data string) (int, error)
}
I think an interface like this should be provided in net/http package to
make it easy to capture the response.
2016年11月10日木曜日 20時09分32秒 UTC+9 Felix Geisendoerfer:
>
> Hi all,
>
> while working on instrumenting my application, I ran into the fact that
> capturing metrics such as status codes from my own http.Handlers is
> surprisingly difficult to get right.
>
> Therefor I created a package that hopefully avoids most of the common
> pitfalls.
>
> https://github.com/felixge/httpsnoop
>
> I would love for net/http experts to take a look at the "Why this package
> exists" section of the README, as well as the horrible hack required to
> make things work:
>
> https://github.com/felixge/httpsnoop/blob/master/wrap.go#L44-L163
>
> Please let me know if you have suggestions for simpler approaches and/or
> spot any bugs in my implementation.
>
> Thanks a lot!
> Felix Geisendörfer
>
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