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package operation
import (
"bytes"
"compress/flate"
"compress/gzip"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"mime"
"mime/multipart"
"net/http"
"net/textproto"
"path/filepath"
"strings"
"github.com/chrislusf/seaweedfs/weed/glog"
"github.com/chrislusf/seaweedfs/weed/security"
"github.com/chrislusf/seaweedfs/weed/util"
)
type UploadResult struct {
Name string `json:"name,omitempty"`
Size uint32 `json:"size,omitempty"`
Error string `json:"error,omitempty"`
ETag string `json:"eTag,omitempty"`
}
var (
client *http.Client
)
func init() {
client = &http.Client{Transport: &http.Transport{
MaxIdleConnsPerHost: 1024,
}}
}
var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"")
// Upload sends a POST request to a volume server to upload the content with adjustable compression level
func UploadWithLocalCompressionLevel(uploadUrl string, filename string, reader io.Reader, isGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt, compressionLevel int) (*UploadResult, error) {
if compressionLevel < 1 {
compressionLevel = 1
}
if compressionLevel > 9 {
compressionLevel = 9
}
return doUpload(uploadUrl, filename, reader, isGzipped, mtype, pairMap, compressionLevel, jwt)
}
// Upload sends a POST request to a volume server to upload the content with fast compression
func Upload(uploadUrl string, filename string, reader io.Reader, isGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (*UploadResult, error) {
return doUpload(uploadUrl, filename, reader, isGzipped, mtype, pairMap, flate.BestSpeed, jwt)
}
func doUpload(uploadUrl string, filename string, reader io.Reader, isGzipped bool, mtype string, pairMap map[string]string, compression int, jwt security.EncodedJwt) (*UploadResult, error) {
contentIsGzipped := isGzipped
shouldGzipNow := false
if !isGzipped {
if shouldBeZipped, iAmSure := util.IsGzippableFileType(filepath.Base(filename), mtype); iAmSure && shouldBeZipped {
shouldGzipNow = true
contentIsGzipped = true
}
}
return upload_content(uploadUrl, func(w io.Writer) (err error) {
if shouldGzipNow {
gzWriter, _ := gzip.NewWriterLevel(w, compression)
_, err = io.Copy(gzWriter, reader)
gzWriter.Close()
} else {
_, err = io.Copy(w, reader)
}
return
}, filename, contentIsGzipped, mtype, pairMap, jwt)
}
func upload_content(uploadUrl string, fillBufferFunction func(w io.Writer) error, filename string, isGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (*UploadResult, error) {
body_buf := bytes.NewBufferString("")
body_writer := multipart.NewWriter(body_buf)
h := make(textproto.MIMEHeader)
h.Set("Content-Disposition", fmt.Sprintf(`form-data; name="file"; filename="%s"`, fileNameEscaper.Replace(filename)))
if mtype == "" {
mtype = mime.TypeByExtension(strings.ToLower(filepath.Ext(filename)))
}
if mtype != "" {
h.Set("Content-Type", mtype)
}
if isGzipped {
h.Set("Content-Encoding", "gzip")
}
file_writer, cp_err := body_writer.CreatePart(h)
if cp_err != nil {
glog.V(0).Infoln("error creating form file", cp_err.Error())
return nil, cp_err
}
if err := fillBufferFunction(file_writer); err != nil {
glog.V(0).Infoln("error copying data", err)
return nil, err
}
content_type := body_writer.FormDataContentType()
if err := body_writer.Close(); err != nil {
glog.V(0).Infoln("error closing body", err)
return nil, err
}
req, postErr := http.NewRequest("POST", uploadUrl, body_buf)
if postErr != nil {
glog.V(0).Infoln("failing to upload to", uploadUrl, postErr.Error())
return nil, postErr
}
req.Header.Set("Content-Type", content_type)
for k, v := range pairMap {
req.Header.Set(k, v)
}
if jwt != "" {
req.Header.Set("Authorization", "BEARER "+string(jwt))
}
resp, post_err := client.Do(req)
if post_err != nil {
glog.V(0).Infoln("failing to upload to", uploadUrl, post_err.Error())
return nil, post_err
}
defer resp.Body.Close()
etag := getEtag(resp)
resp_body, ra_err := ioutil.ReadAll(resp.Body)
if ra_err != nil {
return nil, ra_err
}
var ret UploadResult
unmarshal_err := json.Unmarshal(resp_body, &ret)
if unmarshal_err != nil {
glog.V(0).Infoln("failing to read upload response", uploadUrl, string(resp_body))
return nil, unmarshal_err
}
if ret.Error != "" {
return nil, errors.New(ret.Error)
}
ret.ETag = etag
return &ret, nil
}
func getEtag(r *http.Response) (etag string) {
etag = r.Header.Get("ETag")
if strings.HasPrefix(etag, "\"") && strings.HasSuffix(etag, "\"") {
etag = etag[1 : len(etag)-1]
}
return
}
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