package weed_server import ( "encoding/json" "errors" "io/ioutil" "net/http" "net/url" "strconv" "strings" "time" "github.com/chrislusf/seaweedfs/weed/filer2" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" "os" ) var ( OS_UID = uint32(os.Getuid()) OS_GID = uint32(os.Getgid()) ) type FilerPostResult struct { Name string `json:"name,omitempty"` Size uint32 `json:"size,omitempty"` Error string `json:"error,omitempty"` Fid string `json:"fid,omitempty"` Url string `json:"url,omitempty"` } func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) { var entry *filer2.Entry entry, err = fs.filer.FindEntry(filer2.FullPath(path)) if err == filer2.ErrNotFound { return "", "", nil } if err != nil { glog.V(0).Infoln("failing to find path in filer store", path, err.Error()) writeJsonError(w, r, http.StatusInternalServerError, err) return } if len(entry.Chunks) == 0 { glog.V(1).Infof("empty entry: %s", path) w.WriteHeader(http.StatusNoContent) } else { fileId = entry.Chunks[0].FileId urlLocation, err = fs.filer.MasterClient.LookupFileId(fileId) if err != nil { glog.V(1).Infof("operation LookupFileId %s failed, err is %s", fileId, err.Error()) w.WriteHeader(http.StatusNotFound) } } return } func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string, dataCenter string) (fileId, urlLocation string, err error) { ar := &operation.VolumeAssignRequest{ Count: 1, Replication: replication, Collection: collection, Ttl: r.URL.Query().Get("ttl"), DataCenter: dataCenter, } var altRequest *operation.VolumeAssignRequest if dataCenter != "" { altRequest = &operation.VolumeAssignRequest{ Count: 1, Replication: replication, Collection: collection, Ttl: r.URL.Query().Get("ttl"), DataCenter: "", } } assignResult, ae := operation.Assign(fs.filer.GetMaster(), ar, altRequest) if ae != nil { glog.Errorf("failing to assign a file id: %v", ae) writeJsonError(w, r, http.StatusInternalServerError, ae) err = ae return } fileId = assignResult.Fid urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid return } func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) { query := r.URL.Query() replication := query.Get("replication") if replication == "" { replication = fs.option.DefaultReplication } collection := query.Get("collection") if collection == "" { collection = fs.option.Collection } dataCenter := query.Get("dataCenter") if dataCenter == "" { dataCenter = fs.option.DataCenter } if autoChunked := fs.autoChunk(w, r, replication, collection, dataCenter); autoChunked { return } fileId, urlLocation, err := fs.queryFileInfoByPath(w, r, r.URL.Path) if err == nil && fileId == "" { fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection, dataCenter) } if err != nil || fileId == "" || urlLocation == "" { return } glog.V(4).Infof("write %s to %v", r.URL.Path, urlLocation) u, _ := url.Parse(urlLocation) // This allows a client to generate a chunk manifest and submit it to the filer -- it is a little off // because they need to provide FIDs instead of file paths... cm, _ := strconv.ParseBool(query.Get("cm")) if cm { q := u.Query() q.Set("cm", "true") u.RawQuery = q.Encode() } glog.V(4).Infoln("post to", u) // send request to volume server request := &http.Request{ Method: r.Method, URL: u, Proto: r.Proto, ProtoMajor: r.ProtoMajor, ProtoMinor: r.ProtoMinor, Header: r.Header, Body: r.Body, Host: r.Host, ContentLength: r.ContentLength, } resp, do_err := util.Do(request) if do_err != nil { glog.Errorf("failing to connect to volume server %s: %v, %+v", r.RequestURI, do_err, r.Method) writeJsonError(w, r, http.StatusInternalServerError, do_err) return } defer resp.Body.Close() etag := resp.Header.Get("ETag") resp_body, ra_err := ioutil.ReadAll(resp.Body) if ra_err != nil { glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, ra_err.Error()) writeJsonError(w, r, http.StatusInternalServerError, ra_err) return } glog.V(4).Infoln("post result", string(resp_body)) var ret operation.UploadResult unmarshal_err := json.Unmarshal(resp_body, &ret) if unmarshal_err != nil { glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(resp_body)) writeJsonError(w, r, http.StatusInternalServerError, unmarshal_err) return } if ret.Error != "" { glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error) writeJsonError(w, r, http.StatusInternalServerError, errors.New(ret.Error)) return } // find correct final path path := r.URL.Path if strings.HasSuffix(path, "/") { if ret.Name != "" { path += ret.Name } else { fs.filer.DeleteFileByFileId(fileId) glog.V(0).Infoln("Can not to write to folder", path, "without a file name!") writeJsonError(w, r, http.StatusInternalServerError, errors.New("Can not to write to folder "+path+" without a file name")) return } } // update metadata in filer store glog.V(4).Infoln("saving", path, "=>", fileId) entry := &filer2.Entry{ FullPath: filer2.FullPath(path), Attr: filer2.Attr{ Mtime: time.Now(), Crtime: time.Now(), Mode: 0660, Uid: OS_UID, Gid: OS_GID, Replication: replication, Collection: collection, TtlSec: int32(util.ParseInt(r.URL.Query().Get("ttl"), 0)), }, Chunks: []*filer_pb.FileChunk{{ FileId: fileId, Size: uint64(ret.Size), Mtime: time.Now().UnixNano(), ETag: etag, }}, } if db_err := fs.filer.CreateEntry(entry); db_err != nil { fs.filer.DeleteFileByFileId(fileId) glog.V(0).Infof("failing to write %s to filer server : %v", path, db_err) writeJsonError(w, r, http.StatusInternalServerError, db_err) return } // send back post result reply := FilerPostResult{ Name: ret.Name, Size: ret.Size, Error: ret.Error, Fid: fileId, Url: urlLocation, } setEtag(w, etag) writeJsonQuiet(w, r, http.StatusCreated, reply) } // curl -X DELETE http://localhost:8888/path/to // curl -X DELETE http://localhost:8888/path/to?recursive=true func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) { isRecursive := r.FormValue("recursive") == "true" err := fs.filer.DeleteEntryMetaAndData(filer2.FullPath(r.URL.Path), isRecursive, true) if err != nil { glog.V(1).Infoln("deleting", r.URL.Path, ":", err.Error()) writeJsonError(w, r, http.StatusInternalServerError, err) return } w.WriteHeader(http.StatusNoContent) }