forked from linxGnu/goseaweedfs
/
http_client.go
219 lines (179 loc) · 4.26 KB
/
http_client.go
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package goseaweedfs
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"mime"
"mime/multipart"
"net/http"
"net/textproto"
"path/filepath"
"strings"
)
type httpClient struct {
client *http.Client
authKey string
}
func newHTTPClient(client *http.Client, opts ...HttpClientOption) *httpClient {
c := &httpClient{
client: client,
}
// apply options
for _, opt := range opts {
opt(c)
}
return c
}
func (c *httpClient) Close() (err error) {
return
}
func (c *httpClient) get(url string, header map[string]string) (body []byte, statusCode int, err error) {
req, err := http.NewRequest(http.MethodGet, url, nil)
if err == nil {
for k, v := range header {
req.Header.Set(k, v)
}
// auth key
if c.authKey != "" {
req.Header.Set("Authorization", c.authKey)
}
var resp *http.Response
resp, err = c.client.Do(req)
if err == nil {
body, statusCode, err = readAll(resp)
// empty file check
if IsFileMarkBytes(body, EmptyMark) {
body = []byte{}
}
}
}
return
}
func (c *httpClient) delete(url string) (statusCode int, err error) {
req, err := http.NewRequest(http.MethodDelete, url, nil)
if err != nil {
return
}
// auth key
if c.authKey != "" {
req.Header.Set("Authorization", c.authKey)
}
r, err := c.client.Do(req)
if err != nil {
return
}
body, statusCode, err := readAll(r)
if err == nil {
switch r.StatusCode {
case http.StatusNoContent, http.StatusNotFound, http.StatusAccepted, http.StatusOK:
err = nil
return
}
m := make(map[string]interface{})
if e := json.Unmarshal(body, &m); e == nil {
if s, ok := m["error"].(string); ok {
err = fmt.Errorf("Delete %s: %v", url, s)
return
}
}
err = fmt.Errorf("Delete %s. Got response but can not parse. Body:%s Code:%d", url, string(body), r.StatusCode)
}
return
}
func (c *httpClient) download(url string, callback func(io.Reader) error) (filename string, err error) {
req, err := http.NewRequest(http.MethodGet, url, nil)
if err != nil {
return
}
// auth key
if c.authKey != "" {
req.Header.Set("Authorization", c.authKey)
}
r, err := c.client.Do(req)
if err == nil {
if r.StatusCode != http.StatusOK {
drainAndClose(r.Body)
err = fmt.Errorf("Download %s but error. Status:%s", url, r.Status)
return
}
contentDisposition := r.Header["Content-Disposition"]
if len(contentDisposition) > 0 {
if strings.HasPrefix(contentDisposition[0], "filename=") {
filename = contentDisposition[0][len("filename="):]
filename = strings.Trim(filename, "\"")
}
}
// body data
data, err := ioutil.ReadAll(r.Body)
if err != nil {
return "", err
}
// read writer
var readWriter io.ReadWriter
// empty file check
if IsFileMarkBytes(data, EmptyMark) {
readWriter = bytes.NewBuffer([]byte{})
} else {
readWriter = bytes.NewBuffer(data)
}
// execute callback
err = callback(readWriter)
// drain and close body
drainAndClose(r.Body)
}
return
}
func (c *httpClient) upload(url string, filename string, fileReader io.Reader, mtype string) (respBody []byte, statusCode int, err error) {
r, w := io.Pipe()
// create multipart writer
mw := multipart.NewWriter(w)
result := make(chan error, 1)
go func() {
h := make(textproto.MIMEHeader)
h.Set("Content-Disposition", fmt.Sprintf(`form-data; name="file"; filename="%s"`, normalizeName(filename)))
if mtype == "" {
mtype = mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
}
if mtype != "" {
h.Set("Content-Type", mtype)
}
part, err := mw.CreatePart(h)
if err == nil {
_, err = io.Copy(part, fileReader)
}
if err == nil {
if err = mw.Close(); err == nil {
err = w.Close()
} else {
_ = w.Close()
}
} else {
_ = mw.Close()
_ = w.Close()
}
result <- err
}()
// request
req, err := http.NewRequest(http.MethodPost, url, r)
if err != nil {
return nil, 0, err
}
// request headers
req.Header.Set("Content-Type", mw.FormDataContentType())
if c.authKey != "" {
req.Header.Set("Authorization", c.authKey)
}
// perform request
res, err := c.client.Do(req)
// closing reader in case Posting error.
// This causes pipe writer fail to write and stop above task.
_ = r.Close()
if err == nil {
if respBody, statusCode, err = readAll(res); err == nil {
err = <-result
}
}
return
}