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forgejo/modules/httplib/httplib.go

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2014-05-06 10:50:31 -05:00
// Copyright 2013 The Beego Authors. All rights reserved.
// Copyright 2014 The Gogs Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package httplib
import (
"bytes"
"crypto/tls"
"encoding/json"
"encoding/xml"
"io"
"io/ioutil"
"net"
"net/http"
"net/http/httputil"
"net/url"
"os"
"strings"
"time"
)
var defaultUserAgent = "gogsServer"
// Get returns *BeegoHttpRequest with GET method.
func Get(url string) *BeegoHttpRequest {
var req http.Request
req.Method = "GET"
req.Header = http.Header{}
req.Header.Set("User-Agent", defaultUserAgent)
return &BeegoHttpRequest{url, &req, map[string]string{}, false, 60 * time.Second, 60 * time.Second, nil, nil, nil}
}
// Post returns *BeegoHttpRequest with POST method.
func Post(url string) *BeegoHttpRequest {
var req http.Request
req.Method = "POST"
req.Header = http.Header{}
req.Header.Set("User-Agent", defaultUserAgent)
return &BeegoHttpRequest{url, &req, map[string]string{}, false, 60 * time.Second, 60 * time.Second, nil, nil, nil}
}
// Put returns *BeegoHttpRequest with PUT method.
func Put(url string) *BeegoHttpRequest {
var req http.Request
req.Method = "PUT"
req.Header = http.Header{}
req.Header.Set("User-Agent", defaultUserAgent)
return &BeegoHttpRequest{url, &req, map[string]string{}, false, 60 * time.Second, 60 * time.Second, nil, nil, nil}
}
// Delete returns *BeegoHttpRequest DELETE GET method.
func Delete(url string) *BeegoHttpRequest {
var req http.Request
req.Method = "DELETE"
req.Header = http.Header{}
req.Header.Set("User-Agent", defaultUserAgent)
return &BeegoHttpRequest{url, &req, map[string]string{}, false, 60 * time.Second, 60 * time.Second, nil, nil, nil}
}
// Head returns *BeegoHttpRequest with HEAD method.
func Head(url string) *BeegoHttpRequest {
var req http.Request
req.Method = "HEAD"
req.Header = http.Header{}
req.Header.Set("User-Agent", defaultUserAgent)
return &BeegoHttpRequest{url, &req, map[string]string{}, false, 60 * time.Second, 60 * time.Second, nil, nil, nil}
}
// BeegoHttpRequest provides more useful methods for requesting one url than http.Request.
type BeegoHttpRequest struct {
url string
req *http.Request
params map[string]string
showdebug bool
connectTimeout time.Duration
readWriteTimeout time.Duration
tlsClientConfig *tls.Config
proxy func(*http.Request) (*url.URL, error)
transport http.RoundTripper
}
// Debug sets show debug or not when executing request.
func (b *BeegoHttpRequest) Debug(isdebug bool) *BeegoHttpRequest {
b.showdebug = isdebug
return b
}
// SetTimeout sets connect time out and read-write time out for BeegoRequest.
func (b *BeegoHttpRequest) SetTimeout(connectTimeout, readWriteTimeout time.Duration) *BeegoHttpRequest {
b.connectTimeout = connectTimeout
b.readWriteTimeout = readWriteTimeout
return b
}
// SetTLSClientConfig sets tls connection configurations if visiting https url.
func (b *BeegoHttpRequest) SetTLSClientConfig(config *tls.Config) *BeegoHttpRequest {
b.tlsClientConfig = config
return b
}
// Header add header item string in request.
func (b *BeegoHttpRequest) Header(key, value string) *BeegoHttpRequest {
b.req.Header.Set(key, value)
return b
}
// SetCookie add cookie into request.
func (b *BeegoHttpRequest) SetCookie(cookie *http.Cookie) *BeegoHttpRequest {
b.req.Header.Add("Cookie", cookie.String())
return b
}
// Set transport to
func (b *BeegoHttpRequest) SetTransport(transport http.RoundTripper) *BeegoHttpRequest {
b.transport = transport
return b
}
// Set http proxy
// example:
//
// func(req *http.Request) (*url.URL, error) {
// u, _ := url.ParseRequestURI("http://127.0.0.1:8118")
// return u, nil
// }
func (b *BeegoHttpRequest) SetProxy(proxy func(*http.Request) (*url.URL, error)) *BeegoHttpRequest {
b.proxy = proxy
return b
}
// Param adds query param in to request.
// params build query string as ?key1=value1&key2=value2...
func (b *BeegoHttpRequest) Param(key, value string) *BeegoHttpRequest {
b.params[key] = value
return b
}
// Body adds request raw body.
// it supports string and []byte.
func (b *BeegoHttpRequest) Body(data interface{}) *BeegoHttpRequest {
switch t := data.(type) {
case string:
bf := bytes.NewBufferString(t)
b.req.Body = ioutil.NopCloser(bf)
b.req.ContentLength = int64(len(t))
case []byte:
bf := bytes.NewBuffer(t)
b.req.Body = ioutil.NopCloser(bf)
b.req.ContentLength = int64(len(t))
}
return b
}
func (b *BeegoHttpRequest) getResponse() (*http.Response, error) {
var paramBody string
if len(b.params) > 0 {
var buf bytes.Buffer
for k, v := range b.params {
buf.WriteString(url.QueryEscape(k))
buf.WriteByte('=')
buf.WriteString(url.QueryEscape(v))
buf.WriteByte('&')
}
paramBody = buf.String()
paramBody = paramBody[0 : len(paramBody)-1]
}
if b.req.Method == "GET" && len(paramBody) > 0 {
if strings.Index(b.url, "?") != -1 {
b.url += "&" + paramBody
} else {
b.url = b.url + "?" + paramBody
}
} else if b.req.Method == "POST" && b.req.Body == nil && len(paramBody) > 0 {
b.Header("Content-Type", "application/x-www-form-urlencoded")
b.Body(paramBody)
}
url, err := url.Parse(b.url)
if url.Scheme == "" {
b.url = "http://" + b.url
url, err = url.Parse(b.url)
}
if err != nil {
return nil, err
}
b.req.URL = url
if b.showdebug {
dump, err := httputil.DumpRequest(b.req, true)
if err != nil {
println(err.Error())
}
println(string(dump))
}
trans := b.transport
if trans == nil {
// create default transport
trans = &http.Transport{
TLSClientConfig: b.tlsClientConfig,
Proxy: b.proxy,
Dial: TimeoutDialer(b.connectTimeout, b.readWriteTimeout),
}
} else {
// if b.transport is *http.Transport then set the settings.
if t, ok := trans.(*http.Transport); ok {
if t.TLSClientConfig == nil {
t.TLSClientConfig = b.tlsClientConfig
}
if t.Proxy == nil {
t.Proxy = b.proxy
}
if t.Dial == nil {
t.Dial = TimeoutDialer(b.connectTimeout, b.readWriteTimeout)
}
}
}
client := &http.Client{
Transport: trans,
}
resp, err := client.Do(b.req)
if err != nil {
return nil, err
}
return resp, nil
}
// String returns the body string in response.
// it calls Response inner.
func (b *BeegoHttpRequest) String() (string, error) {
data, err := b.Bytes()
if err != nil {
return "", err
}
return string(data), nil
}
// Bytes returns the body []byte in response.
// it calls Response inner.
func (b *BeegoHttpRequest) Bytes() ([]byte, error) {
resp, err := b.getResponse()
if err != nil {
return nil, err
}
if resp.Body == nil {
return nil, nil
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
return data, nil
}
// ToFile saves the body data in response to one file.
// it calls Response inner.
func (b *BeegoHttpRequest) ToFile(filename string) error {
f, err := os.Create(filename)
if err != nil {
return err
}
defer f.Close()
resp, err := b.getResponse()
if err != nil {
return err
}
if resp.Body == nil {
return nil
}
defer resp.Body.Close()
_, err = io.Copy(f, resp.Body)
if err != nil {
return err
}
return nil
}
// ToJson returns the map that marshals from the body bytes as json in response .
// it calls Response inner.
func (b *BeegoHttpRequest) ToJson(v interface{}) error {
data, err := b.Bytes()
if err != nil {
return err
}
err = json.Unmarshal(data, v)
if err != nil {
return err
}
return nil
}
// ToXml returns the map that marshals from the body bytes as xml in response .
// it calls Response inner.
func (b *BeegoHttpRequest) ToXML(v interface{}) error {
data, err := b.Bytes()
if err != nil {
return err
}
err = xml.Unmarshal(data, v)
if err != nil {
return err
}
return nil
}
// Response executes request client gets response mannually.
func (b *BeegoHttpRequest) Response() (*http.Response, error) {
return b.getResponse()
}
// TimeoutDialer returns functions of connection dialer with timeout settings for http.Transport Dial field.
func TimeoutDialer(cTimeout time.Duration, rwTimeout time.Duration) func(net, addr string) (c net.Conn, err error) {
return func(netw, addr string) (net.Conn, error) {
conn, err := net.DialTimeout(netw, addr, cTimeout)
if err != nil {
return nil, err
}
conn.SetDeadline(time.Now().Add(rwTimeout))
return conn, nil
}
}