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67 lines
1.4 KiB
67 lines
1.4 KiB
package dm
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import (
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"fmt"
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"io"
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"net/http"
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"net/http/httputil"
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"os"
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)
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type debugTransport struct {
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// Writer is the logging destination
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Writer io.Writer
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http.RoundTripper
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}
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// NewDebugTransport returns a debugging implementation of a RoundTripper.
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func NewDebugTransport(rt http.RoundTripper) http.RoundTripper {
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return debugTransport{
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RoundTripper: rt,
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Writer: os.Stderr,
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}
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}
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func (tr debugTransport) CancelRequest(req *http.Request) {
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type canceler interface {
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CancelRequest(*http.Request)
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}
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if cr, ok := tr.transport().(canceler); ok {
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cr.CancelRequest(req)
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}
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}
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func (tr debugTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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tr.logRequest(req)
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resp, err := tr.transport().RoundTrip(req)
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if err != nil {
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return nil, err
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}
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tr.logResponse(resp)
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return resp, err
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}
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func (tr debugTransport) transport() http.RoundTripper {
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if tr.RoundTripper != nil {
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return tr.RoundTripper
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}
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return http.DefaultTransport
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}
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func (tr debugTransport) logRequest(req *http.Request) {
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dump, err := httputil.DumpRequestOut(req, true)
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if err != nil {
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fmt.Fprintf(tr.Writer, "%s: %s\n", "could not dump request", err)
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}
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fmt.Fprint(tr.Writer, string(dump))
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}
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func (tr debugTransport) logResponse(resp *http.Response) {
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dump, err := httputil.DumpResponse(resp, true)
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if err != nil {
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fmt.Fprintf(tr.Writer, "%s: %s\n", "could not dump response", err)
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}
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fmt.Fprint(tr.Writer, string(dump))
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}
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