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91 lines
2.4 KiB
91 lines
2.4 KiB
package operation
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import (
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"bytes"
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"code.google.com/p/weed-fs/go/glog"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"mime"
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"mime/multipart"
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"net/http"
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"net/textproto"
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"path/filepath"
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"strings"
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)
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type UploadResult struct {
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Name string `json:"name,omitempty"`
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Size uint32 `json:"size,omitempty"`
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Error string `json:"error,omitempty"`
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}
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var (
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client *http.Client
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)
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func init() {
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client = &http.Client{Transport: &http.Transport{
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MaxIdleConnsPerHost: 1024,
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}}
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}
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var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
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func Upload(uploadUrl string, filename string, reader io.Reader, isGzipped bool, mtype string) (*UploadResult, error) {
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return upload_content(uploadUrl, func(w io.Writer) (err error) {
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_, err = io.Copy(w, reader)
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return
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}, filename, isGzipped, mtype)
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}
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func upload_content(uploadUrl string, fillBufferFunction func(w io.Writer) error, filename string, isGzipped bool, mtype string) (*UploadResult, error) {
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body_buf := bytes.NewBufferString("")
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body_writer := multipart.NewWriter(body_buf)
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h := make(textproto.MIMEHeader)
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h.Set("Content-Disposition", fmt.Sprintf(`form-data; name="file"; filename="%s"`, fileNameEscaper.Replace(filename)))
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if mtype == "" {
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mtype = mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
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}
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if mtype != "" {
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h.Set("Content-Type", mtype)
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}
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if isGzipped {
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h.Set("Content-Encoding", "gzip")
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}
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file_writer, cp_err := body_writer.CreatePart(h)
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if cp_err != nil {
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glog.V(0).Infoln("error creating form file", cp_err.Error())
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return nil, cp_err
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}
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if err := fillBufferFunction(file_writer); err != nil {
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glog.V(0).Infoln("error copying data", err)
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return nil, err
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}
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content_type := body_writer.FormDataContentType()
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if err := body_writer.Close(); err != nil {
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glog.V(0).Infoln("error closing body", err)
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return nil, err
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}
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resp, post_err := client.Post(uploadUrl, content_type, body_buf)
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if post_err != nil {
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glog.V(0).Infoln("failing to upload to", uploadUrl, post_err.Error())
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return nil, post_err
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}
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defer resp.Body.Close()
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resp_body, ra_err := ioutil.ReadAll(resp.Body)
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if ra_err != nil {
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return nil, ra_err
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}
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var ret UploadResult
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unmarshal_err := json.Unmarshal(resp_body, &ret)
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if unmarshal_err != nil {
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glog.V(0).Infoln("failing to read upload resonse", uploadUrl, string(resp_body))
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return nil, unmarshal_err
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}
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if ret.Error != "" {
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return nil, errors.New(ret.Error)
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}
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return &ret, nil
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}
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