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package config |
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import ( |
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"bytes" |
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"context" |
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"fmt" |
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"io/ioutil" |
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"math/rand" |
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"net/http" |
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"net/http/httputil" |
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"time" |
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) |
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// These debugging codes are copeid and modified from https://github.com/motemen/go-loghttp |
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// Copyright (c) 2014 motemen |
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var _ http.RoundTripper = &DebugTransport{} |
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// DebugTransport implements http.RoundTripper and showing request/response contents. |
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type DebugTransport struct { |
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Transport http.RoundTripper |
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} |
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var DefaultDebugTransport = &DebugTransport{ |
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Transport: http.DefaultTransport, |
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} |
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type contextKey struct{} |
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var contextKeyRequestStart = &contextKey{} |
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func (t *DebugTransport) RoundTrip(req *http.Request) (*http.Response, error) { |
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ctx := context.WithValue(req.Context(), contextKeyRequestStart, time.Now()) |
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req = req.WithContext(ctx) |
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num := rand.Int63() // #nosec G404 | this number is used only for debugging and readability |
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t.showDumpRequest(req, num) |
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resp, err := t.transport().RoundTrip(req) |
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if err != nil { |
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return resp, err |
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} |
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t.showDumpResponse(resp, num) |
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return resp, err |
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} |
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// showDumpRequest shows dumps of requests. |
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func (t *DebugTransport) showDumpRequest(req *http.Request, num int64) { |
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if req == nil || req.Body == nil { |
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return |
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} |
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body, err := ioutil.ReadAll(req.Body) |
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if err != nil { |
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return |
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} |
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req.Body = ioutil.NopCloser(bytes.NewReader(body)) |
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dump, err := httputil.DumpRequest(req, false) |
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if err != nil { |
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return |
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} |
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fmt.Printf("---- [[AWS Request (#%d)]] ----\n[[Request Header]]\n%s[[Request Body]]\n%s\n\n", num, string(dump), body) |
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} |
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func (t *DebugTransport) showDumpResponse(resp *http.Response, num int64) { |
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if resp == nil || resp.Body == nil { |
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return |
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} |
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body, err := ioutil.ReadAll(resp.Body) |
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if err != nil { |
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return |
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} |
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defer resp.Body.Close() |
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resp.Body = ioutil.NopCloser(bytes.NewReader(body)) |
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dump, err := httputil.DumpResponse(resp, false) |
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if err != nil { |
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return |
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} |
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fmt.Printf("---- [[AWS Response (#%d)]] ----\n[[Response Header]]\n%s[[Response Body]]\n%s\n\n\n", num, string(dump), body) |
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} |
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func (t *DebugTransport) transport() http.RoundTripper { |
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if t.Transport != nil { |
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return t.Transport |
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} |
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return http.DefaultTransport |
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} |
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