mirror of
https://github.com/minio/minio.git
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166 lines
4.9 KiB
Go
166 lines
4.9 KiB
Go
package main
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import (
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"fmt"
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"io"
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"net/http"
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"net/rpc"
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"net/url"
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"os"
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"path"
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"strconv"
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router "github.com/gorilla/mux"
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"github.com/minio/minio/pkg/probe"
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"github.com/minio/minio/pkg/safe"
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)
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// Storage server implements rpc primitives to facilitate exporting a
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// disk over a network.
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type storageServer struct {
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storage StorageAPI
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}
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/// Volume operations handlers
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// MakeVolHandler - make vol handler is rpc wrapper for MakeVol operation.
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func (s *storageServer) MakeVolHandler(arg *string, reply *GenericReply) error {
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return s.storage.MakeVol(*arg)
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}
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// ListVolsHandler - list vols handler is rpc wrapper for ListVols operation.
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func (s *storageServer) ListVolsHandler(arg *string, reply *ListVolsReply) error {
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vols, err := s.storage.ListVols()
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if err != nil {
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return err
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}
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reply.Vols = vols
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return nil
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}
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// StatVolHandler - stat vol handler is a rpc wrapper for StatVol operation.
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func (s *storageServer) StatVolHandler(arg *string, reply *VolInfo) error {
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volInfo, err := s.storage.StatVol(*arg)
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if err != nil {
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return err
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}
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*reply = volInfo
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return nil
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}
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// DeleteVolHandler - delete vol handler is a rpc wrapper for
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// DeleteVol operation.
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func (s *storageServer) DeleteVolHandler(arg *string, reply *GenericReply) error {
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return s.storage.DeleteVol(*arg)
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}
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/// File operations
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// ListFilesHandler - list files handler.
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func (s *storageServer) ListFilesHandler(arg *ListFilesArgs, reply *ListFilesReply) error {
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files, eof, err := s.storage.ListFiles(arg.Vol, arg.Prefix, arg.Marker, arg.Recursive, arg.Count)
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if err != nil {
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return err
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}
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reply.Files = files
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reply.EOF = eof
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return nil
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}
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// ReadFileHandler - read file handler is a wrapper to provide
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// destination URL for reading files.
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func (s *storageServer) ReadFileHandler(arg *ReadFileArgs, reply *ReadFileReply) error {
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endpoint := "http://localhost:9000/minio/rpc/storage" // TODO fix this.
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newURL, err := url.Parse(fmt.Sprintf("%s/%s", endpoint, path.Join(arg.Vol, arg.Path)))
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if err != nil {
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return err
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}
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q := newURL.Query()
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q.Set("offset", fmt.Sprintf("%d", arg.Offset))
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newURL.RawQuery = q.Encode()
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reply.URL = newURL.String()
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return nil
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}
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// CreateFileHandler - create file handler is rpc wrapper to create file.
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func (s *storageServer) CreateFileHandler(arg *CreateFileArgs, reply *CreateFileReply) error {
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endpoint := "http://localhost:9000/minio/rpc/storage" // TODO fix this.
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newURL, err := url.Parse(fmt.Sprintf("%s/%s", endpoint, path.Join(arg.Vol, arg.Path)))
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if err != nil {
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return err
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}
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reply.URL = newURL.String()
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return nil
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}
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// StatFileHandler - stat file handler is rpc wrapper to stat file.
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func (s *storageServer) StatFileHandler(arg *StatFileArgs, reply *FileInfo) error {
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fileInfo, err := s.storage.StatFile(arg.Vol, arg.Path)
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if err != nil {
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return err
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}
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*reply = fileInfo
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return nil
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}
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// DeleteFileHandler - delete file handler is rpc wrapper to delete file.
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func (s *storageServer) DeleteFileHandler(arg *DeleteFileArgs, reply *GenericReply) error {
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return s.storage.DeleteFile(arg.Vol, arg.Path)
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}
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// StreamUpload - stream upload handler.
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func (s *storageServer) StreamUploadHandler(w http.ResponseWriter, r *http.Request) {
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vars := router.Vars(r)
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volume := vars["volume"]
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path := vars["path"]
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writeCloser, err := s.storage.CreateFile(volume, path)
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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reader := r.Body
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if _, err = io.Copy(writeCloser, reader); err != nil {
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writeCloser.(*safe.File).CloseAndRemove()
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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writeCloser.Close()
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}
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// StreamDownloadHandler - stream download handler.
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func (s *storageServer) StreamDownloadHandler(w http.ResponseWriter, r *http.Request) {
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vars := router.Vars(r)
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volume := vars["volume"]
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path := vars["path"]
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offset, err := strconv.ParseInt(r.URL.Query().Get("offset"), 10, 64)
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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readCloser, err := s.storage.ReadFile(volume, path, offset)
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if err != nil {
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httpErr := http.StatusBadRequest
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if os.IsNotExist(err) {
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httpErr = http.StatusNotFound
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}
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http.Error(w, err.Error(), httpErr)
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return
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}
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io.Copy(w, readCloser)
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}
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func registerStorageServer(mux *router.Router, diskPath string) {
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// Minio storage routes.
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fs, e := newFS(diskPath)
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fatalIf(probe.NewError(e), "Unable to initialize storage disk.", nil)
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storageRPCServer := rpc.NewServer()
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stServer := &storageServer{
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storage: fs,
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}
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storageRPCServer.RegisterName("Storage", stServer)
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storageRouter := mux.NewRoute().PathPrefix(reservedBucket).Subrouter()
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storageRouter.Path("/rpc/storage").Handler(storageRPCServer)
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storageRouter.Methods("POST").Path("/rpc/storage/upload/{volume}/{path:.+}").HandlerFunc(stServer.StreamUploadHandler)
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storageRouter.Methods("GET").Path("/rpc/storage/download/{volume}/{path:.+}").Queries("offset", "").HandlerFunc(stServer.StreamDownloadHandler)
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}
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