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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package storage
import (
"context"
"io"
"net/url"
"os"
"path"
"strings"
"time"
"code.gitea.io/gitea/modules/log"
"github.com/minio/minio-go/v7"
"github.com/minio/minio-go/v7/pkg/credentials"
)
var (
_ ObjectStorage = &MinioStorage{}
quoteEscaper = strings.NewReplacer("\\", "\\\\", `"`, "\\\"")
)
type minioObject struct {
*minio.Object
}
func (m *minioObject) Stat() (os.FileInfo, error) {
oi, err := m.Object.Stat()
if err != nil {
return nil, convertMinioErr(err)
}
return &minioFileInfo{oi}, nil
}
// MinioStorageType is the type descriptor for minio storage
const MinioStorageType Type = "minio"
// MinioStorageConfig represents the configuration for a minio storage
type MinioStorageConfig struct {
Endpoint string `ini:"MINIO_ENDPOINT"`
AccessKeyID string `ini:"MINIO_ACCESS_KEY_ID"`
SecretAccessKey string `ini:"MINIO_SECRET_ACCESS_KEY"`
Bucket string `ini:"MINIO_BUCKET"`
Location string `ini:"MINIO_LOCATION"`
BasePath string `ini:"MINIO_BASE_PATH"`
UseSSL bool `ini:"MINIO_USE_SSL"`
}
// MinioStorage returns a minio bucket storage
type MinioStorage struct {
ctx context.Context
client *minio.Client
bucket string
basePath string
}
func convertMinioErr(err error) error {
if err == nil {
return nil
}
errResp, ok := err.(minio.ErrorResponse)
if !ok {
return err
}
// Convert two responses to standard analogues
switch errResp.Code {
case "NoSuchKey":
return os.ErrNotExist
case "AccessDenied":
return os.ErrPermission
}
return err
}
// NewMinioStorage returns a minio storage
func NewMinioStorage(ctx context.Context, cfg interface{}) (ObjectStorage, error) {
configInterface, err := toConfig(MinioStorageConfig{}, cfg)
if err != nil {
return nil, convertMinioErr(err)
}
config := configInterface.(MinioStorageConfig)
log.Info("Creating Minio storage at %s:%s with base path %s", config.Endpoint, config.Bucket, config.BasePath)
minioClient, err := minio.New(config.Endpoint, &minio.Options{
Creds: credentials.NewStaticV4(config.AccessKeyID, config.SecretAccessKey, ""),
Secure: config.UseSSL,
})
if err != nil {
return nil, convertMinioErr(err)
}
if err := minioClient.MakeBucket(ctx, config.Bucket, minio.MakeBucketOptions{
Region: config.Location,
}); err != nil {
// Check to see if we already own this bucket (which happens if you run this twice)
exists, errBucketExists := minioClient.BucketExists(ctx, config.Bucket)
if !exists || errBucketExists != nil {
return nil, convertMinioErr(err)
}
}
return &MinioStorage{
ctx: ctx,
client: minioClient,
bucket: config.Bucket,
basePath: config.BasePath,
}, nil
}
func (m *MinioStorage) buildMinioPath(p string) string {
return strings.TrimPrefix(path.Join(m.basePath, p), "/")
}
// Open open a file
func (m *MinioStorage) Open(path string) (Object, error) {
var opts = minio.GetObjectOptions{}
object, err := m.client.GetObject(m.ctx, m.bucket, m.buildMinioPath(path), opts)
if err != nil {
return nil, convertMinioErr(err)
}
return &minioObject{object}, nil
}
// Save save a file to minio
func (m *MinioStorage) Save(path string, r io.Reader, size int64) (int64, error) {
uploadInfo, err := m.client.PutObject(
m.ctx,
m.bucket,
m.buildMinioPath(path),
r,
size,
minio.PutObjectOptions{ContentType: "application/octet-stream"},
)
if err != nil {
return 0, convertMinioErr(err)
}
return uploadInfo.Size, nil
}
type minioFileInfo struct {
minio.ObjectInfo
}
func (m minioFileInfo) Name() string {
return m.ObjectInfo.Key
}
func (m minioFileInfo) Size() int64 {
return m.ObjectInfo.Size
}
func (m minioFileInfo) ModTime() time.Time {
return m.LastModified
}
func (m minioFileInfo) IsDir() bool {
return strings.HasSuffix(m.ObjectInfo.Key, "/")
}
func (m minioFileInfo) Mode() os.FileMode {
return os.ModePerm
}
func (m minioFileInfo) Sys() interface{} {
return nil
}
// Stat returns the stat information of the object
func (m *MinioStorage) Stat(path string) (os.FileInfo, error) {
info, err := m.client.StatObject(
m.ctx,
m.bucket,
m.buildMinioPath(path),
minio.StatObjectOptions{},
)
if err != nil {
return nil, convertMinioErr(err)
}
return &minioFileInfo{info}, nil
}
// Delete delete a file
func (m *MinioStorage) Delete(path string) error {
err := m.client.RemoveObject(m.ctx, m.bucket, m.buildMinioPath(path), minio.RemoveObjectOptions{})
return convertMinioErr(err)
}
// URL gets the redirect URL to a file. The presigned link is valid for 5 minutes.
func (m *MinioStorage) URL(path, name string) (*url.URL, error) {
reqParams := make(url.Values)
// TODO it may be good to embed images with 'inline' like ServeData does, but we don't want to have to read the file, do we?
reqParams.Set("response-content-disposition", "attachment; filename=\""+quoteEscaper.Replace(name)+"\"")
u, err := m.client.PresignedGetObject(m.ctx, m.bucket, m.buildMinioPath(path), 5*time.Minute, reqParams)
return u, convertMinioErr(err)
}
// IterateObjects iterates across the objects in the miniostorage
func (m *MinioStorage) IterateObjects(fn func(path string, obj Object) error) error {
var opts = minio.GetObjectOptions{}
lobjectCtx, cancel := context.WithCancel(m.ctx)
defer cancel()
for mObjInfo := range m.client.ListObjects(lobjectCtx, m.bucket, minio.ListObjectsOptions{
Prefix: m.basePath,
Recursive: true,
}) {
object, err := m.client.GetObject(lobjectCtx, m.bucket, mObjInfo.Key, opts)
if err != nil {
return convertMinioErr(err)
}
if err := func(object *minio.Object, fn func(path string, obj Object) error) error {
defer object.Close()
return fn(strings.TrimPrefix(m.basePath, mObjInfo.Key), &minioObject{object})
}(object, fn); err != nil {
return convertMinioErr(err)
}
}
return nil
}
func init() {
RegisterStorageType(MinioStorageType, NewMinioStorage)
}