mirror of
https://github.com/minio/minio
synced 2024-09-06 08:44:03 +00:00
301 lines
8.4 KiB
Go
301 lines
8.4 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2016 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package main
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net/http"
|
|
"net/rpc"
|
|
"net/url"
|
|
urlpath "path"
|
|
"strconv"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/Sirupsen/logrus"
|
|
)
|
|
|
|
type networkStorage struct {
|
|
netScheme string
|
|
netAddr string
|
|
netPath string
|
|
rpcClient *rpc.Client
|
|
httpClient *http.Client
|
|
}
|
|
|
|
const (
|
|
storageRPCPath = reservedBucket + "/storage"
|
|
)
|
|
|
|
// splits network path into its components Address and Path.
|
|
func splitNetPath(networkPath string) (netAddr, netPath string) {
|
|
index := strings.LastIndex(networkPath, ":")
|
|
netAddr = networkPath[:index]
|
|
netPath = networkPath[index+1:]
|
|
return netAddr, netPath
|
|
}
|
|
|
|
// Converts rpc.ServerError to underlying error. This function is
|
|
// written so that the storageAPI errors are consistent across network
|
|
// disks as well.
|
|
func toStorageErr(err error) error {
|
|
switch err.Error() {
|
|
case errDiskFull.Error():
|
|
return errDiskFull
|
|
case errVolumeNotFound.Error():
|
|
return errVolumeNotFound
|
|
case errVolumeExists.Error():
|
|
return errVolumeExists
|
|
case errFileNotFound.Error():
|
|
return errFileNotFound
|
|
case errIsNotRegular.Error():
|
|
return errIsNotRegular
|
|
case errVolumeNotEmpty.Error():
|
|
return errVolumeNotEmpty
|
|
case errFileAccessDenied.Error():
|
|
return errFileAccessDenied
|
|
case errVolumeAccessDenied.Error():
|
|
return errVolumeAccessDenied
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Initialize new rpc client.
|
|
func newRPCClient(networkPath string) (StorageAPI, error) {
|
|
// Input validation.
|
|
if networkPath == "" || strings.LastIndex(networkPath, ":") == -1 {
|
|
log.WithFields(logrus.Fields{
|
|
"networkPath": networkPath,
|
|
}).Debugf("Network path is malformed, should be of form <ip>:<port>:<export_dir>")
|
|
return nil, errInvalidArgument
|
|
}
|
|
|
|
// TODO validate netAddr and netPath.
|
|
netAddr, netPath := splitNetPath(networkPath)
|
|
|
|
// Dial minio rpc storage http path.
|
|
rpcClient, err := rpc.DialHTTPPath("tcp", netAddr, storageRPCPath)
|
|
if err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"netAddr": netAddr,
|
|
"storageRPCPath": storageRPCPath,
|
|
}).Debugf("RPC HTTP dial failed with %s", err)
|
|
return nil, err
|
|
}
|
|
|
|
// Initialize http client.
|
|
httpClient := &http.Client{
|
|
// Setting a sensible time out of 6minutes to wait for
|
|
// response headers. Request is pro-actively cancelled
|
|
// after 6minutes if no response was received from server.
|
|
Timeout: 6 * time.Minute,
|
|
Transport: http.DefaultTransport,
|
|
}
|
|
|
|
// Initialize network storage.
|
|
ndisk := &networkStorage{
|
|
netScheme: "http", // TODO: fix for ssl rpc support.
|
|
netAddr: netAddr,
|
|
netPath: netPath,
|
|
rpcClient: rpcClient,
|
|
httpClient: httpClient,
|
|
}
|
|
|
|
// Returns successfully here.
|
|
return ndisk, nil
|
|
}
|
|
|
|
// MakeVol - make a volume.
|
|
func (n networkStorage) MakeVol(volume string) error {
|
|
reply := GenericReply{}
|
|
if err := n.rpcClient.Call("Storage.MakeVolHandler", volume, &reply); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
}).Debugf("Storage.MakeVolHandler returned an error %s", err)
|
|
return toStorageErr(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ListVols - List all volumes.
|
|
func (n networkStorage) ListVols() (vols []VolInfo, err error) {
|
|
ListVols := ListVolsReply{}
|
|
err = n.rpcClient.Call("Storage.ListVolsHandler", "", &ListVols)
|
|
if err != nil {
|
|
log.Debugf("Storage.ListVolsHandler returned an error %s", err)
|
|
return nil, err
|
|
}
|
|
return ListVols.Vols, nil
|
|
}
|
|
|
|
// StatVol - get current Stat volume info.
|
|
func (n networkStorage) StatVol(volume string) (volInfo VolInfo, err error) {
|
|
if err = n.rpcClient.Call("Storage.StatVolHandler", volume, &volInfo); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
}).Debugf("Storage.StatVolHandler returned an error %s", err)
|
|
return VolInfo{}, toStorageErr(err)
|
|
}
|
|
return volInfo, nil
|
|
}
|
|
|
|
// DeleteVol - Delete a volume.
|
|
func (n networkStorage) DeleteVol(volume string) error {
|
|
reply := GenericReply{}
|
|
if err := n.rpcClient.Call("Storage.DeleteVolHandler", volume, &reply); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
}).Debugf("Storage.DeleteVolHandler returned an error %s", err)
|
|
return toStorageErr(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// File operations.
|
|
|
|
// CreateFile - create file.
|
|
func (n networkStorage) CreateFile(volume, path string) (writeCloser io.WriteCloser, err error) {
|
|
writeURL := new(url.URL)
|
|
writeURL.Scheme = n.netScheme
|
|
writeURL.Host = n.netAddr
|
|
writeURL.Path = fmt.Sprintf("%s/upload/%s", storageRPCPath, urlpath.Join(volume, path))
|
|
|
|
contentType := "application/octet-stream"
|
|
readCloser, writeCloser := io.Pipe()
|
|
go func() {
|
|
resp, err := n.httpClient.Post(writeURL.String(), contentType, readCloser)
|
|
if err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
"path": path,
|
|
}).Debugf("CreateFile HTTP POST failed to upload data with error %s", err)
|
|
readCloser.CloseWithError(err)
|
|
return
|
|
}
|
|
if resp != nil {
|
|
if resp.StatusCode != http.StatusOK {
|
|
if resp.StatusCode == http.StatusNotFound {
|
|
readCloser.CloseWithError(errFileNotFound)
|
|
return
|
|
}
|
|
readCloser.CloseWithError(errors.New("Invalid response."))
|
|
return
|
|
}
|
|
// Close the reader.
|
|
readCloser.Close()
|
|
}
|
|
}()
|
|
return writeCloser, nil
|
|
}
|
|
|
|
// StatFile - get latest Stat information for a file at path.
|
|
func (n networkStorage) StatFile(volume, path string) (fileInfo FileInfo, err error) {
|
|
if err = n.rpcClient.Call("Storage.StatFileHandler", StatFileArgs{
|
|
Vol: volume,
|
|
Path: path,
|
|
}, &fileInfo); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
"path": path,
|
|
}).Debugf("Storage.StatFileHandler failed with %s", err)
|
|
return FileInfo{}, toStorageErr(err)
|
|
}
|
|
return fileInfo, nil
|
|
}
|
|
|
|
// ReadFile - reads a file.
|
|
func (n networkStorage) ReadFile(volume string, path string, offset int64) (reader io.ReadCloser, err error) {
|
|
readURL := new(url.URL)
|
|
readURL.Scheme = n.netScheme
|
|
readURL.Host = n.netAddr
|
|
readURL.Path = fmt.Sprintf("%s/download/%s", storageRPCPath, urlpath.Join(volume, path))
|
|
readQuery := make(url.Values)
|
|
readQuery.Set("offset", strconv.FormatInt(offset, 10))
|
|
readURL.RawQuery = readQuery.Encode()
|
|
resp, err := n.httpClient.Get(readURL.String())
|
|
if err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
"path": path,
|
|
}).Debugf("ReadFile http Get failed with error %s", err)
|
|
return nil, err
|
|
}
|
|
if resp != nil {
|
|
if resp.StatusCode != http.StatusOK {
|
|
if resp.StatusCode == http.StatusNotFound {
|
|
return nil, errFileNotFound
|
|
}
|
|
return nil, errors.New("Invalid response")
|
|
}
|
|
}
|
|
return resp.Body, nil
|
|
}
|
|
|
|
// ListDir - list all entries at prefix.
|
|
func (n networkStorage) ListDir(volume, path string) (entries []string, err error) {
|
|
if err = n.rpcClient.Call("Storage.ListDirHandler", ListDirArgs{
|
|
Vol: volume,
|
|
Path: path,
|
|
}, &entries); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
"path": path,
|
|
}).Debugf("Storage.ListDirHandlers failed with %s", err)
|
|
return nil, toStorageErr(err)
|
|
}
|
|
// Return successfully unmarshalled results.
|
|
return entries, nil
|
|
}
|
|
|
|
// DeleteFile - Delete a file at path.
|
|
func (n networkStorage) DeleteFile(volume, path string) (err error) {
|
|
reply := GenericReply{}
|
|
if err = n.rpcClient.Call("Storage.DeleteFileHandler", DeleteFileArgs{
|
|
Vol: volume,
|
|
Path: path,
|
|
}, &reply); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"volume": volume,
|
|
"path": path,
|
|
}).Debugf("Storage.DeleteFileHandler failed with %s", err)
|
|
return toStorageErr(err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// RenameFile - Rename file.
|
|
func (n networkStorage) RenameFile(srcVolume, srcPath, dstVolume, dstPath string) (err error) {
|
|
reply := GenericReply{}
|
|
if err = n.rpcClient.Call("Storage.RenameFileHandler", RenameFileArgs{
|
|
SrcVol: srcVolume,
|
|
SrcPath: srcPath,
|
|
DstVol: dstVolume,
|
|
DstPath: dstPath,
|
|
}, &reply); err != nil {
|
|
log.WithFields(logrus.Fields{
|
|
"srcVolume": srcVolume,
|
|
"srcPath": srcPath,
|
|
"dstVolume": dstVolume,
|
|
"dstPath": dstPath,
|
|
}).Errorf("Storage.RenameFileHandler failed with %s", err)
|
|
return toStorageErr(err)
|
|
}
|
|
return nil
|
|
}
|