seaweedfs/go/util/http_util.go
2014-05-12 22:59:00 -07:00

115 lines
2.4 KiB
Go

package util
import (
"bytes"
"code.google.com/p/weed-fs/go/glog"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
)
var (
client *http.Client
Transport *http.Transport
)
func init() {
Transport = &http.Transport{
MaxIdleConnsPerHost: 1024,
}
client = &http.Client{Transport: Transport}
}
func PostBytes(url string, body []byte) ([]byte, error) {
r, err := client.Post(url, "application/octet-stream", bytes.NewReader(body))
if err != nil {
glog.V(0).Infoln(err)
return nil, err
}
defer r.Body.Close()
b, err := ioutil.ReadAll(r.Body)
if err != nil {
glog.V(0).Infoln("read post result from", url, err)
return nil, err
}
return b, nil
}
func Post(url string, values url.Values) ([]byte, error) {
r, err := client.PostForm(url, values)
if err != nil {
glog.V(0).Infoln(err)
return nil, err
}
defer r.Body.Close()
b, err := ioutil.ReadAll(r.Body)
if err != nil {
glog.V(0).Infoln("read post result from", url, err)
return nil, err
}
return b, nil
}
func Get(url string) ([]byte, error) {
r, err := client.Get(url)
if err != nil {
glog.V(0).Infoln(err)
return nil, err
}
defer r.Body.Close()
b, err := ioutil.ReadAll(r.Body)
if r.StatusCode != 200 {
return nil, fmt.Errorf("%s: %s", url, r.Status)
}
if err != nil {
glog.V(0).Infoln("read get result from", url, err)
return nil, err
}
return b, nil
}
func Delete(url string) error {
req, err := http.NewRequest("DELETE", url, nil)
if err != nil {
glog.V(0).Infoln("failing to delete", url)
return err
}
resp, e := client.Do(req)
if e != nil {
glog.V(0).Infoln(e)
return e
}
defer resp.Body.Close()
if _, err := ioutil.ReadAll(resp.Body); err != nil {
glog.V(0).Infoln("read get result from", url, err)
return err
}
return nil
}
func DownloadUrl(fileUrl string) (filename string, content []byte, e error) {
response, err := client.Get(fileUrl)
if err != nil {
return "", nil, err
}
defer response.Body.Close()
contentDisposition := response.Header["Content-Disposition"]
if len(contentDisposition) > 0 {
glog.V(4).Info("Content-Disposition: ", contentDisposition[0])
if strings.HasPrefix(contentDisposition[0], "filename=") {
filename = contentDisposition[0][len("filename="):]
filename = strings.Trim(filename, "\"")
}
} else {
glog.V(4).Info("No Content-Disposition!")
}
content, e = ioutil.ReadAll(response.Body)
return
}
func Do(req *http.Request) (resp *http.Response, err error) {
return client.Do(req)
}