go.etcd.io/etcd@v3.3.27+incompatible/client/curl.go (about) 1 // Copyright 2015 The etcd Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package client 16 17 import ( 18 "bytes" 19 "fmt" 20 "io/ioutil" 21 "net/http" 22 "os" 23 ) 24 25 var ( 26 cURLDebug = false 27 ) 28 29 func EnablecURLDebug() { 30 cURLDebug = true 31 } 32 33 func DisablecURLDebug() { 34 cURLDebug = false 35 } 36 37 // printcURL prints the cURL equivalent request to stderr. 38 // It returns an error if the body of the request cannot 39 // be read. 40 // The caller MUST cancel the request if there is an error. 41 func printcURL(req *http.Request) error { 42 if !cURLDebug { 43 return nil 44 } 45 var ( 46 command string 47 b []byte 48 err error 49 ) 50 51 if req.URL != nil { 52 command = fmt.Sprintf("curl -X %s %s", req.Method, req.URL.String()) 53 } 54 55 if req.Body != nil { 56 b, err = ioutil.ReadAll(req.Body) 57 if err != nil { 58 return err 59 } 60 command += fmt.Sprintf(" -d %q", string(b)) 61 } 62 63 fmt.Fprintf(os.Stderr, "cURL Command: %s\n", command) 64 65 // reset body 66 body := bytes.NewBuffer(b) 67 req.Body = ioutil.NopCloser(body) 68 69 return nil 70 }