mirror of
https://github.com/chrislusf/seaweedfs
synced 2024-09-02 15:10:33 +02:00
227 lines
5.3 KiB
Go
227 lines
5.3 KiB
Go
package s3api
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import (
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"crypto/md5"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"net/http"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/server"
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"github.com/gorilla/mux"
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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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func (s3a *S3ApiServer) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
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// http://docs.aws.amazon.com/AmazonS3/latest/dev/UploadingObjects.html
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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object := getObject(vars)
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_, err := validateContentMd5(r.Header)
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if err != nil {
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writeErrorResponse(w, ErrInvalidDigest, r.URL)
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return
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}
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rAuthType := getRequestAuthType(r)
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dataReader := r.Body
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if rAuthType == authTypeStreamingSigned {
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dataReader = newSignV4ChunkedReader(r)
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}
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uploadUrl := fmt.Sprintf("http://%s%s/%s%s?collection=%s",
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s3a.option.Filer, s3a.option.BucketsPath, bucket, object, bucket)
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etag, errCode := s3a.putToFiler(r, uploadUrl, dataReader)
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if errCode != ErrNone {
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writeErrorResponse(w, errCode, r.URL)
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return
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}
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setEtag(w, etag)
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writeSuccessResponseEmpty(w)
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}
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func (s3a *S3ApiServer) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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object := getObject(vars)
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if strings.HasSuffix(r.URL.Path, "/") {
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writeErrorResponse(w, ErrNotImplemented, r.URL)
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return
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}
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destUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer, s3a.option.BucketsPath, bucket, object)
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s3a.proxyToFiler(w, r, destUrl, passThroughResponse)
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}
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func (s3a *S3ApiServer) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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object := getObject(vars)
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destUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer, s3a.option.BucketsPath, bucket, object)
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s3a.proxyToFiler(w, r, destUrl, passThroughResponse)
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}
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func (s3a *S3ApiServer) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
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vars := mux.Vars(r)
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bucket := vars["bucket"]
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object := getObject(vars)
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destUrl := fmt.Sprintf("http://%s%s/%s%s",
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s3a.option.Filer, s3a.option.BucketsPath, bucket, object)
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s3a.proxyToFiler(w, r, destUrl, func(proxyResonse *http.Response, w http.ResponseWriter) {
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for k, v := range proxyResonse.Header {
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w.Header()[k] = v
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}
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w.WriteHeader(http.StatusNoContent)
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})
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}
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// DeleteMultipleObjectsHandler - Delete multiple objects
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func (s3a *S3ApiServer) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Request) {
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// TODO
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writeErrorResponse(w, ErrNotImplemented, r.URL)
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}
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func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, destUrl string, responseFn func(proxyResonse *http.Response, w http.ResponseWriter)) {
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glog.V(2).Infof("s3 proxying %s to %s", r.Method, destUrl)
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proxyReq, err := http.NewRequest(r.Method, destUrl, r.Body)
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if err != nil {
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glog.Errorf("NewRequest %s: %v", destUrl, err)
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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proxyReq.Header.Set("Host", s3a.option.Filer)
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proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr)
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proxyReq.Header.Set("Etag-MD5", "True")
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for header, values := range r.Header {
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for _, value := range values {
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proxyReq.Header.Add(header, value)
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}
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}
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resp, postErr := client.Do(proxyReq)
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if postErr != nil {
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glog.Errorf("post to filer: %v", postErr)
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writeErrorResponse(w, ErrInternalError, r.URL)
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return
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}
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defer resp.Body.Close()
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responseFn(resp, w)
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}
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func passThroughResponse(proxyResonse *http.Response, w http.ResponseWriter) {
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for k, v := range proxyResonse.Header {
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w.Header()[k] = v
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}
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w.WriteHeader(proxyResonse.StatusCode)
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io.Copy(w, proxyResonse.Body)
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}
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func (s3a *S3ApiServer) putToFiler(r *http.Request, uploadUrl string, dataReader io.ReadCloser) (etag string, code ErrorCode) {
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hash := md5.New()
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var body io.Reader = io.TeeReader(dataReader, hash)
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proxyReq, err := http.NewRequest("PUT", uploadUrl, body)
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if err != nil {
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glog.Errorf("NewRequest %s: %v", uploadUrl, err)
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return "", ErrInternalError
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}
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proxyReq.Header.Set("Host", s3a.option.Filer)
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proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr)
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for header, values := range r.Header {
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for _, value := range values {
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proxyReq.Header.Add(header, value)
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}
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}
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resp, postErr := client.Do(proxyReq)
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dataReader.Close()
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if postErr != nil {
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glog.Errorf("post to filer: %v", postErr)
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return "", ErrInternalError
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}
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defer resp.Body.Close()
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etag = fmt.Sprintf("%x", hash.Sum(nil))
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resp_body, ra_err := ioutil.ReadAll(resp.Body)
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if ra_err != nil {
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glog.Errorf("upload to filer response read: %v", ra_err)
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return etag, ErrInternalError
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}
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var ret weed_server.FilerPostResult
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unmarshal_err := json.Unmarshal(resp_body, &ret)
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if unmarshal_err != nil {
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glog.Errorf("failing to read upload to %s : %v", uploadUrl, string(resp_body))
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return "", ErrInternalError
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}
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if ret.Error != "" {
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glog.Errorf("upload to filer error: %v", ret.Error)
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return "", ErrInternalError
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}
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return etag, ErrNone
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}
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func setEtag(w http.ResponseWriter, etag string) {
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if etag != "" {
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if strings.HasPrefix(etag, "\"") {
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w.Header().Set("ETag", etag)
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} else {
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w.Header().Set("ETag", "\""+etag+"\"")
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}
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}
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}
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func getObject(vars map[string]string) string {
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object := vars["object"]
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if !strings.HasPrefix(object, "/") {
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object = "/" + object
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}
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return object
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}
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