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minio/pkg/fs/config.go

162 lines
4.5 KiB

/*
* Minio Cloud Storage, (C) 2015 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 fs
import (
"os"
"os/user"
"path/filepath"
"runtime"
"strconv"
"github.com/minio/minio-xl/pkg/probe"
"github.com/minio/minio-xl/pkg/quick"
)
// Workaround for docker images with fully static binary and 32bit linux operating systems.
// For static binaries NSS library will not be a part of the static binary hence user.Current() fails.
// For 32bit linux CGO is not enabled so it will not provide linux specific codebase.
func userCurrent() (*user.User, *probe.Error) {
if os.Getenv("DOCKERIMAGE") == "1" {
wd, err := os.Getwd()
if err != nil {
return nil, probe.NewError(err)
}
return &user.User{Uid: "0", Gid: "0", Username: "root", Name: "root", HomeDir: wd}, nil
}
if runtime.GOARCH == "386" && runtime.GOOS == "linux" {
return &user.User{
Uid: strconv.Itoa(os.Getuid()),
Gid: strconv.Itoa(os.Getgid()),
Username: os.Getenv("USER"),
Name: os.Getenv("USER"),
HomeDir: os.Getenv("HOME"),
}, nil
}
user, err := user.Current()
if err != nil {
return nil, probe.NewError(err)
}
return user, nil
}
func getFSBucketsConfigPath() (string, *probe.Error) {
if customBucketsConfigPath != "" {
return customBucketsConfigPath, nil
}
u, err := userCurrent()
if err != nil {
return "", err.Trace()
}
fsBucketsConfigPath := filepath.Join(u.HomeDir, ".minio", "buckets.json")
return fsBucketsConfigPath, nil
}
func getFSMultipartsSessionConfigPath() (string, *probe.Error) {
if customMultipartsConfigPath != "" {
return customMultipartsConfigPath, nil
}
u, err := userCurrent()
if err != nil {
return "", err.Trace()
}
fsMultipartsConfigPath := filepath.Join(u.HomeDir, ".minio", "multiparts-session.json")
return fsMultipartsConfigPath, nil
}
// internal variable only accessed via get/set methods
var customMultipartsConfigPath, customBucketsConfigPath string
// SetFSBucketsConfigPath - set custom fs buckets config path
func SetFSBucketsConfigPath(configPath string) {
customBucketsConfigPath = configPath
}
// SetFSMultipartsConfigPath - set custom multiparts session config path
func SetFSMultipartsConfigPath(configPath string) {
customMultipartsConfigPath = configPath
}
// SaveMultipartsSession - save multiparts
func SaveMultipartsSession(multiparts *Multiparts) *probe.Error {
fsMultipartsConfigPath, err := getFSMultipartsSessionConfigPath()
if err != nil {
return err.Trace()
}
qc, err := quick.New(multiparts)
if err != nil {
return err.Trace()
}
if err := qc.Save(fsMultipartsConfigPath); err != nil {
return err.Trace()
}
return nil
}
// SaveBucketsMetadata - save metadata of all buckets
func SaveBucketsMetadata(buckets *Buckets) *probe.Error {
fsBucketsConfigPath, err := getFSBucketsConfigPath()
if err != nil {
return err.Trace()
}
qc, err := quick.New(buckets)
if err != nil {
return err.Trace()
}
if err := qc.Save(fsBucketsConfigPath); err != nil {
return err.Trace()
}
return nil
}
// loadMultipartsSession load multipart session file
func loadMultipartsSession() (*Multiparts, *probe.Error) {
fsMultipartsConfigPath, err := getFSMultipartsSessionConfigPath()
if err != nil {
return nil, err.Trace()
}
multiparts := &Multiparts{}
multiparts.Version = "1"
multiparts.ActiveSession = make(map[string]*MultipartSession)
qc, err := quick.New(multiparts)
if err != nil {
return nil, err.Trace()
}
if err := qc.Load(fsMultipartsConfigPath); err != nil {
return nil, err.Trace()
}
return qc.Data().(*Multiparts), nil
}
// loadBucketsMetadata load buckets metadata file
func loadBucketsMetadata() (*Buckets, *probe.Error) {
fsBucketsConfigPath, err := getFSBucketsConfigPath()
if err != nil {
return nil, err.Trace()
}
buckets := &Buckets{}
buckets.Version = "1"
buckets.Metadata = make(map[string]*BucketMetadata)
qc, err := quick.New(buckets)
if err != nil {
return nil, err.Trace()
}
if err := qc.Load(fsBucketsConfigPath); err != nil {
return nil, err.Trace()
}
return qc.Data().(*Buckets), nil
}