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minio/cmd/rpc-server.go

132 lines
3.7 KiB

package cmd
import (
"net/rpc"
router "github.com/gorilla/mux"
)
// Storage server implements rpc primitives to facilitate exporting a
// disk over a network.
type storageServer struct {
storage StorageAPI
}
/// Volume operations handlers
// MakeVolHandler - make vol handler is rpc wrapper for MakeVol operation.
func (s *storageServer) MakeVolHandler(arg *string, reply *GenericReply) error {
err := s.storage.MakeVol(*arg)
if err != nil {
return err
}
return nil
}
// ListVolsHandler - list vols handler is rpc wrapper for ListVols operation.
func (s *storageServer) ListVolsHandler(arg *string, reply *ListVolsReply) error {
vols, err := s.storage.ListVols()
if err != nil {
return err
}
reply.Vols = vols
return nil
}
// StatVolHandler - stat vol handler is a rpc wrapper for StatVol operation.
func (s *storageServer) StatVolHandler(arg *string, reply *VolInfo) error {
volInfo, err := s.storage.StatVol(*arg)
if err != nil {
return err
}
*reply = volInfo
return nil
}
// DeleteVolHandler - delete vol handler is a rpc wrapper for
// DeleteVol operation.
func (s *storageServer) DeleteVolHandler(arg *string, reply *GenericReply) error {
err := s.storage.DeleteVol(*arg)
if err != nil {
return err
}
return nil
}
/// File operations
// StatFileHandler - stat file handler is rpc wrapper to stat file.
func (s *storageServer) StatFileHandler(arg *StatFileArgs, reply *FileInfo) error {
fileInfo, err := s.storage.StatFile(arg.Vol, arg.Path)
if err != nil {
return err
}
*reply = fileInfo
return nil
}
// ListDirHandler - list directory handler is rpc wrapper to list dir.
func (s *storageServer) ListDirHandler(arg *ListDirArgs, reply *[]string) error {
entries, err := s.storage.ListDir(arg.Vol, arg.Path)
if err != nil {
return err
}
*reply = entries
return nil
}
// ReadAllHandler - read all handler is rpc wrapper to read all storage API.
func (s *storageServer) ReadAllHandler(arg *ReadFileArgs, reply *[]byte) error {
buf, err := s.storage.ReadAll(arg.Vol, arg.Path)
if err != nil {
return err
}
reply = &buf
return nil
}
// ReadFileHandler - read file handler is rpc wrapper to read file.
func (s *storageServer) ReadFileHandler(arg *ReadFileArgs, reply *int64) error {
n, err := s.storage.ReadFile(arg.Vol, arg.Path, arg.Offset, arg.Buffer)
if err != nil {
return err
}
reply = &n
return nil
}
// AppendFileHandler - append file handler is rpc wrapper to append file.
func (s *storageServer) AppendFileHandler(arg *AppendFileArgs, reply *GenericReply) error {
return s.storage.AppendFile(arg.Vol, arg.Path, arg.Buffer)
}
// DeleteFileHandler - delete file handler is rpc wrapper to delete file.
func (s *storageServer) DeleteFileHandler(arg *DeleteFileArgs, reply *GenericReply) error {
return s.storage.DeleteFile(arg.Vol, arg.Path)
}
// RenameFileHandler - rename file handler is rpc wrapper to rename file.
func (s *storageServer) RenameFileHandler(arg *RenameFileArgs, reply *GenericReply) error {
return s.storage.RenameFile(arg.SrcVol, arg.SrcPath, arg.DstVol, arg.DstPath)
}
// Initialize new storage rpc.
func newRPCServer(exportPath string) (*storageServer, error) {
// Initialize posix storage API.
storage, err := newPosix(exportPath)
if err != nil && err != errDiskNotFound {
return nil, err
}
return &storageServer{
storage: storage,
}, nil
}
// registerStorageRPCRouter - register storage rpc router.
func registerStorageRPCRouter(mux *router.Router, stServer *storageServer) {
storageRPCServer := rpc.NewServer()
storageRPCServer.RegisterName("Storage", stServer)
storageRouter := mux.NewRoute().PathPrefix(reservedBucket).Subrouter()
// Add minio storage routes.
storageRouter.Path("/storage").Handler(storageRPCServer)
}