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package weed_server
import ( "context" "crypto/md5" "encoding/json" "errors" "fmt" "io" "io/ioutil" "mime" "net/http" "net/url" "os" filenamePath "path" "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/security" "github.com/chrislusf/seaweedfs/weed/stats" "github.com/chrislusf/seaweedfs/weed/storage/needle" "github.com/chrislusf/seaweedfs/weed/util" )
var ( OS_UID = uint32(os.Getuid()) OS_GID = uint32(os.Getgid()) )
type FilerPostResult struct { Name string `json:"name,omitempty"` Size int64 `json:"size,omitempty"` Error string `json:"error,omitempty"` Fid string `json:"fid,omitempty"` Url string `json:"url,omitempty"` }
func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection, dataCenter, ttlString string) (fileId, urlLocation string, auth security.EncodedJwt, err error) {
stats.FilerRequestCounter.WithLabelValues("assign").Inc() start := time.Now() defer func() { stats.FilerRequestHistogram.WithLabelValues("assign").Observe(time.Since(start).Seconds()) }()
ar := &operation.VolumeAssignRequest{ Count: 1, Replication: replication, Collection: collection, Ttl: ttlString, DataCenter: dataCenter, } var altRequest *operation.VolumeAssignRequest if dataCenter != "" { altRequest = &operation.VolumeAssignRequest{ Count: 1, Replication: replication, Collection: collection, Ttl: ttlString, DataCenter: "", } }
assignResult, ae := operation.Assign(fs.filer.GetMaster(), fs.grpcDialOption, 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 auth = assignResult.Auth return }
func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
query := r.URL.Query() collection, replication := fs.detectCollection(r.RequestURI, query.Get("collection"), query.Get("replication")) dataCenter := query.Get("dataCenter") if dataCenter == "" { dataCenter = fs.option.DataCenter } ttlString := r.URL.Query().Get("ttl")
// read ttl in seconds
ttl, err := needle.ReadTTL(ttlString) ttlSeconds := int32(0) if err == nil { ttlSeconds = int32(ttl.Minutes()) * 60 }
if autoChunked := fs.autoChunk(ctx, w, r, replication, collection, dataCenter, ttlSeconds, ttlString); autoChunked { return }
if fs.option.Cipher { reply, err := fs.encrypt(ctx, w, r, replication, collection, dataCenter, ttlSeconds, ttlString) if err != nil { writeJsonError(w, r, http.StatusInternalServerError, err) } else if reply != nil { writeJsonQuiet(w, r, http.StatusCreated, reply) }
return }
fileId, urlLocation, auth, err := fs.assignNewFileInfo(w, r, replication, collection, dataCenter, ttlString)
if err != nil || fileId == "" || urlLocation == "" { glog.V(0).Infof("fail to allocate volume for %s, collection:%s, datacenter:%s", r.URL.Path, collection, dataCenter) writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("fail to allocate volume for %s, collection:%s, datacenter:%s", r.URL.Path, collection, dataCenter)) return }
glog.V(4).Infof("write %s to %v", r.URL.Path, urlLocation)
u, _ := url.Parse(urlLocation) ret, err := fs.uploadToVolumeServer(r, u, auth, w, fileId) if err != nil { return }
if err = fs.updateFilerStore(ctx, r, w, replication, collection, ret, fileId, ttlSeconds); err != nil { return }
// send back post result
reply := FilerPostResult{ Name: ret.Name, Size: int64(ret.Size), Error: ret.Error, Fid: fileId, Url: urlLocation, } setEtag(w, ret.ETag) writeJsonQuiet(w, r, http.StatusCreated, reply) }
// update metadata in filer store
func (fs *FilerServer) updateFilerStore(ctx context.Context, r *http.Request, w http.ResponseWriter, replication string, collection string, ret *operation.UploadResult, fileId string, ttlSeconds int32) (err error) {
stats.FilerRequestCounter.WithLabelValues("postStoreWrite").Inc() start := time.Now() defer func() { stats.FilerRequestHistogram.WithLabelValues("postStoreWrite").Observe(time.Since(start).Seconds()) }()
modeStr := r.URL.Query().Get("mode") if modeStr == "" { modeStr = "0660" } mode, err := strconv.ParseUint(modeStr, 8, 32) if err != nil { glog.Errorf("Invalid mode format: %s, use 0660 by default", modeStr) mode = 0660 }
path := r.URL.Path if strings.HasSuffix(path, "/") { if ret.Name != "" { path += ret.Name } } existingEntry, err := fs.filer.FindEntry(ctx, util.FullPath(path)) crTime := time.Now() if err == nil && existingEntry != nil { crTime = existingEntry.Crtime } entry := &filer2.Entry{ FullPath: util.FullPath(path), Attr: filer2.Attr{ Mtime: time.Now(), Crtime: crTime, Mode: os.FileMode(mode), Uid: OS_UID, Gid: OS_GID, Replication: replication, Collection: collection, TtlSec: ttlSeconds, Mime: ret.Mime, }, Chunks: []*filer_pb.FileChunk{{ FileId: fileId, Size: uint64(ret.Size), Mtime: time.Now().UnixNano(), ETag: ret.ETag, }}, } if entry.Attr.Mime == "" { if ext := filenamePath.Ext(path); ext != "" { entry.Attr.Mime = mime.TypeByExtension(ext) } } // glog.V(4).Infof("saving %s => %+v", path, entry)
if dbErr := fs.filer.CreateEntry(ctx, entry, false); dbErr != nil { fs.filer.DeleteChunks(entry.Chunks) glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr) writeJsonError(w, r, http.StatusInternalServerError, dbErr) err = dbErr return }
return nil }
// send request to volume server
func (fs *FilerServer) uploadToVolumeServer(r *http.Request, u *url.URL, auth security.EncodedJwt, w http.ResponseWriter, fileId string) (ret *operation.UploadResult, err error) {
stats.FilerRequestCounter.WithLabelValues("postUpload").Inc() start := time.Now() defer func() { stats.FilerRequestHistogram.WithLabelValues("postUpload").Observe(time.Since(start).Seconds()) }()
ret = &operation.UploadResult{} hash := md5.New() var body = ioutil.NopCloser(io.TeeReader(r.Body, hash))
request := &http.Request{ Method: r.Method, URL: u, Proto: r.Proto, ProtoMajor: r.ProtoMajor, ProtoMinor: r.ProtoMinor, Header: r.Header, Body: body, Host: r.Host, ContentLength: r.ContentLength, }
if auth != "" { request.Header.Set("Authorization", "BEARER "+string(auth)) } resp, doErr := util.Do(request) if doErr != nil { glog.Errorf("failing to connect to volume server %s: %v, %+v", r.RequestURI, doErr, r.Method) writeJsonError(w, r, http.StatusInternalServerError, doErr) err = doErr return } defer func() { io.Copy(ioutil.Discard, resp.Body) resp.Body.Close() }()
respBody, raErr := ioutil.ReadAll(resp.Body) if raErr != nil { glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, raErr.Error()) writeJsonError(w, r, http.StatusInternalServerError, raErr) err = raErr return }
glog.V(4).Infoln("post result", string(respBody)) unmarshalErr := json.Unmarshal(respBody, &ret) if unmarshalErr != nil { glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(respBody)) writeJsonError(w, r, http.StatusInternalServerError, unmarshalErr) err = unmarshalErr return } if ret.Error != "" { err = errors.New(ret.Error) glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error) writeJsonError(w, r, http.StatusInternalServerError, err) return } // find correct final path
path := r.URL.Path if strings.HasSuffix(path, "/") { if ret.Name != "" { path += ret.Name } else { err = fmt.Errorf("can not to write to folder %s without a file name", path) fs.filer.DeleteFileByFileId(fileId) glog.V(0).Infoln("Can not to write to folder", path, "without a file name!") writeJsonError(w, r, http.StatusInternalServerError, err) return } } // use filer calculated md5 ETag, instead of the volume server crc ETag
ret.ETag = fmt.Sprintf("%x", hash.Sum(nil)) return }
// curl -X DELETE http://localhost:8888/path/to
// curl -X DELETE http://localhost:8888/path/to?recursive=true
// curl -X DELETE http://localhost:8888/path/to?recursive=true&ignoreRecursiveError=true
// curl -X DELETE http://localhost:8888/path/to?recursive=true&skipChunkDeletion=true
func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
isRecursive := r.FormValue("recursive") == "true" if !isRecursive && fs.option.recursiveDelete { if r.FormValue("recursive") != "false" { isRecursive = true } } ignoreRecursiveError := r.FormValue("ignoreRecursiveError") == "true" skipChunkDeletion := r.FormValue("skipChunkDeletion") == "true"
err := fs.filer.DeleteEntryMetaAndData(context.Background(), util.FullPath(r.URL.Path), isRecursive, ignoreRecursiveError, !skipChunkDeletion) if err != nil { glog.V(1).Infoln("deleting", r.URL.Path, ":", err.Error()) httpStatus := http.StatusInternalServerError if err == filer_pb.ErrNotFound { httpStatus = http.StatusNotFound } writeJsonError(w, r, httpStatus, err) return }
w.WriteHeader(http.StatusNoContent) }
func (fs *FilerServer) detectCollection(requestURI, qCollection, qReplication string) (collection, replication string) { // default
collection = fs.option.Collection replication = fs.option.DefaultReplication
// get default collection settings
if qCollection != "" { collection = qCollection } if qReplication != "" { replication = qReplication }
// required by buckets folder
if strings.HasPrefix(requestURI, fs.filer.DirBucketsPath+"/") { bucketAndObjectKey := requestURI[len(fs.filer.DirBucketsPath)+1:] t := strings.Index(bucketAndObjectKey, "/") if t < 0 { collection = bucketAndObjectKey } if t > 0 { collection = bucketAndObjectKey[:t] } replication = fs.filer.ReadBucketOption(collection) }
return }
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