package s3api import ( "encoding/json" "fmt" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/gorilla/mux" "io" "io/ioutil" "net/http" "strings" ) var ( client *http.Client ) func init() { client = &http.Client{Transport: &http.Transport{ MaxIdleConnsPerHost: 1024, }} } type UploadResult struct { Name string `json:"name,omitempty"` Size uint32 `json:"size,omitempty"` Error string `json:"error,omitempty"` } func (s3a *S3ApiServer) PutObjectHandler(w http.ResponseWriter, r *http.Request) { // http://docs.aws.amazon.com/AmazonS3/latest/dev/UploadingObjects.html vars := mux.Vars(r) bucket := vars["bucket"] object := vars["object"] _, err := validateContentMd5(r.Header) if err != nil { writeErrorResponse(w, ErrInvalidDigest, r.URL) return } uploadUrl := fmt.Sprintf("http://%s%s/%s/%s?collection=%s", s3a.option.Filer, s3a.option.BucketsPath, bucket, object, bucket) proxyReq, err := http.NewRequest("PUT", uploadUrl, r.Body) if err != nil { glog.Errorf("NewRequest %s: %v", uploadUrl, err) writeErrorResponse(w, ErrInternalError, r.URL) return } proxyReq.Header.Set("Host", s3a.option.Filer) proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr) for header, values := range r.Header { for _, value := range values { proxyReq.Header.Add(header, value) } } resp, postErr := client.Do(proxyReq) if postErr != nil { glog.Errorf("post to filer: %v", postErr) writeErrorResponse(w, ErrInternalError, r.URL) return } defer resp.Body.Close() resp_body, ra_err := ioutil.ReadAll(resp.Body) if ra_err != nil { glog.Errorf("upload to filer response read: %v", ra_err) writeErrorResponse(w, ErrInternalError, r.URL) return } var ret UploadResult unmarshal_err := json.Unmarshal(resp_body, &ret) if unmarshal_err != nil { glog.Errorf("failing to read upload to %s : %v", uploadUrl, string(resp_body)) writeErrorResponse(w, ErrInternalError, r.URL) return } if ret.Error != "" { glog.Errorf("upload to filer error: %v", ret.Error) writeErrorResponse(w, ErrInternalError, r.URL) return } writeSuccessResponseEmpty(w) } func (s3a *S3ApiServer) GetObjectHandler(w http.ResponseWriter, r *http.Request) { if strings.HasSuffix(r.URL.Path, "/") { writeErrorResponse(w, ErrNotImplemented, r.URL) return } destUrl := fmt.Sprintf("http://%s%s%s", s3a.option.Filer, s3a.option.BucketsPath, r.RequestURI) s3a.proxyToFiler(w, r, destUrl, passThroghResponse) } func (s3a *S3ApiServer) HeadObjectHandler(w http.ResponseWriter, r *http.Request) { destUrl := fmt.Sprintf("http://%s%s%s", s3a.option.Filer, s3a.option.BucketsPath, r.RequestURI) s3a.proxyToFiler(w, r, destUrl, passThroghResponse) } func (s3a *S3ApiServer) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) { destUrl := fmt.Sprintf("http://%s%s%s", s3a.option.Filer, s3a.option.BucketsPath, r.RequestURI) s3a.proxyToFiler(w, r, destUrl, func(proxyResonse *http.Response, w http.ResponseWriter) { for k, v := range proxyResonse.Header { w.Header()[k] = v } w.WriteHeader(http.StatusNoContent) }) } func (s3a *S3ApiServer) proxyToFiler(w http.ResponseWriter, r *http.Request, destUrl string, responseFn func(proxyResonse *http.Response, w http.ResponseWriter)) { glog.V(2).Infof("s3 proxying %s to %s", r.Method, destUrl) proxyReq, err := http.NewRequest(r.Method, destUrl, r.Body) if err != nil { glog.Errorf("NewRequest %s: %v", destUrl, err) writeErrorResponse(w, ErrInternalError, r.URL) return } proxyReq.Header.Set("Host", s3a.option.Filer) proxyReq.Header.Set("X-Forwarded-For", r.RemoteAddr) for header, values := range r.Header { for _, value := range values { proxyReq.Header.Add(header, value) } } resp, postErr := client.Do(proxyReq) if postErr != nil { glog.Errorf("post to filer: %v", postErr) writeErrorResponse(w, ErrInternalError, r.URL) return } defer resp.Body.Close() responseFn(resp, w) } func passThroghResponse(proxyResonse *http.Response, w http.ResponseWriter) { for k, v := range proxyResonse.Header { w.Header()[k] = v } w.WriteHeader(proxyResonse.StatusCode) io.Copy(w, proxyResonse.Body) }