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// Copyright 2020 The Gogs 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 db
import (
"context"
"fmt"
"time"
"gorm.io/gorm"
"gogs.io/gogs/internal/errutil"
"gogs.io/gogs/internal/lfsutil"
)
// LFSStore is the persistent interface for LFS objects.
//
// NOTE: All methods are sorted in alphabetical order.
type LFSStore interface {
// CreateObject creates a LFS object record in database.
CreateObject(ctx context.Context, repoID int64, oid lfsutil.OID, size int64, storage lfsutil.Storage) error
// GetObjectByOID returns the LFS object with given OID. It returns
// ErrLFSObjectNotExist when not found.
GetObjectByOID(ctx context.Context, repoID int64, oid lfsutil.OID) (*LFSObject, error)
// GetObjectsByOIDs returns LFS objects found within "oids". The returned list
// could have less elements if some oids were not found.
GetObjectsByOIDs(ctx context.Context, repoID int64, oids ...lfsutil.OID) ([]*LFSObject, error)
}
var LFS LFSStore
// LFSObject is the relation between an LFS object and a repository.
type LFSObject struct {
RepoID int64 `gorm:"primaryKey;auto_increment:false"`
OID lfsutil.OID `gorm:"primaryKey;column:oid"`
Size int64 `gorm:"not null"`
Storage lfsutil.Storage `gorm:"not null"`
CreatedAt time.Time `gorm:"not null"`
}
var _ LFSStore = (*lfs)(nil)
type lfs struct {
*gorm.DB
}
func (db *lfs) CreateObject(ctx context.Context, repoID int64, oid lfsutil.OID, size int64, storage lfsutil.Storage) error {
object := &LFSObject{
RepoID: repoID,
OID: oid,
Size: size,
Storage: storage,
}
return db.WithContext(ctx).Create(object).Error
}
type ErrLFSObjectNotExist struct {
args errutil.Args
}
func IsErrLFSObjectNotExist(err error) bool {
_, ok := err.(ErrLFSObjectNotExist)
return ok
}
func (err ErrLFSObjectNotExist) Error() string {
return fmt.Sprintf("LFS object does not exist: %v", err.args)
}
func (ErrLFSObjectNotExist) NotFound() bool {
return true
}
func (db *lfs) GetObjectByOID(ctx context.Context, repoID int64, oid lfsutil.OID) (*LFSObject, error) {
object := new(LFSObject)
err := db.WithContext(ctx).Where("repo_id = ? AND oid = ?", repoID, oid).First(object).Error
if err != nil {
if err == gorm.ErrRecordNotFound {
return nil, ErrLFSObjectNotExist{args: errutil.Args{"repoID": repoID, "oid": oid}}
}
return nil, err
}
return object, err
}
func (db *lfs) GetObjectsByOIDs(ctx context.Context, repoID int64, oids ...lfsutil.OID) ([]*LFSObject, error) {
if len(oids) == 0 {
return []*LFSObject{}, nil
}
objects := make([]*LFSObject, 0, len(oids))
err := db.WithContext(ctx).Where("repo_id = ? AND oid IN (?)", repoID, oids).Find(&objects).Error
if err != nil && err != gorm.ErrRecordNotFound {
return nil, err
}
return objects, nil
}
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