/usr/share/gocode/src/github.com/jacobsa/gcloud/httputil/debugging_round_tripper.go is in golang-github-jacobsa-gcloud-dev 0.0~git20150709-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | // Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package httputil
import (
"bytes"
"flag"
"fmt"
"io"
"io/ioutil"
"net/http"
)
var fDebug = flag.Bool(
"httputil.debug",
false,
"Dump information about HTTP requests.")
// An interface for transports that support the signature of
// http.Transport.CancelRequest.
type CancellableRoundTripper interface {
http.RoundTripper
CancelRequest(*http.Request)
}
// When the flag --httputil.debug is set, wrap the supplied round tripper in a
// layer that dumps information about HTTP requests. Otherwise, return it
// unmodified.
func DebuggingRoundTripper(
in CancellableRoundTripper) (out CancellableRoundTripper) {
if *fDebug {
out = &debuggingRoundTripper{wrapped: in}
} else {
out = in
}
return
}
////////////////////////////////////////////////////////////////////////
// Helpers
////////////////////////////////////////////////////////////////////////
func readAllAndClose(rc io.ReadCloser) string {
// Read.
contents, err := ioutil.ReadAll(rc)
if err != nil {
panic(err)
}
// Close.
if err := rc.Close(); err != nil {
panic(err)
}
return string(contents)
}
// Read everything from *rc, then replace it with a copy.
func snarfBody(rc *io.ReadCloser) string {
contents := readAllAndClose(*rc)
*rc = ioutil.NopCloser(bytes.NewBufferString(contents))
return contents
}
////////////////////////////////////////////////////////////////////////
// debuggingRoundTripper
////////////////////////////////////////////////////////////////////////
type debuggingRoundTripper struct {
wrapped CancellableRoundTripper
}
func (t *debuggingRoundTripper) RoundTrip(
req *http.Request) (*http.Response, error) {
// Print information about the request.
fmt.Println("========== REQUEST ===========")
fmt.Println(req.Method, req.URL, req.Proto)
for k, vs := range req.Header {
for _, v := range vs {
fmt.Printf("%s: %s\n", k, v)
}
}
if req.Body != nil {
fmt.Printf("\n%s\n", snarfBody(&req.Body))
}
// Execute the request.
res, err := t.wrapped.RoundTrip(req)
if err != nil {
return res, err
}
// Print the response.
fmt.Println("========== RESPONSE ==========")
fmt.Println(res.Proto, res.Status)
for k, vs := range res.Header {
for _, v := range vs {
fmt.Printf("%s: %s\n", k, v)
}
}
if res.Body != nil {
fmt.Printf("\n%s\n", snarfBody(&res.Body))
}
fmt.Println("==============================")
return res, err
}
func (t *debuggingRoundTripper) CancelRequest(req *http.Request) {
t.wrapped.CancelRequest(req)
}
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