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package models
import (
"errors"
"time"
"github.com/go-xorm/xorm"
)
// LFSMetaObject stores metadata for LFS tracked files.
type LFSMetaObject struct {
ID int64 `xorm:"pk autoincr"`
Oid string `xorm:"UNIQUE(s) INDEX NOT NULL"`
Size int64 `xorm:"NOT NULL"`
RepositoryID int64 `xorm:"UNIQUE(s) INDEX NOT NULL"`
Existing bool `xorm:"-"`
Created time.Time `xorm:"-"`
CreatedUnix int64 `xorm:"created"`
}
// LFSTokenResponse defines the JSON structure in which the JWT token is stored.
// This structure is fetched via SSH and passed by the Git LFS client to the server
// endpoint for authorization.
type LFSTokenResponse struct {
Header map[string]string `json:"header"`
Href string `json:"href"`
}
var (
// ErrLFSObjectNotExist is returned from lfs models functions in order
// to differentiate between database and missing object errors.
ErrLFSObjectNotExist = errors.New("LFS Meta object does not exist")
)
const (
// LFSMetaFileIdentifier is the string appearing at the first line of LFS pointer files.
// https://github.com/git-lfs/git-lfs/blob/master/docs/spec.md
LFSMetaFileIdentifier = "version https://git-lfs.github.com/spec/v1"
// LFSMetaFileOidPrefix appears in LFS pointer files on a line before the sha256 hash.
LFSMetaFileOidPrefix = "oid sha256:"
)
// NewLFSMetaObject stores a given populated LFSMetaObject structure in the database
// if it is not already present.
func NewLFSMetaObject(m *LFSMetaObject) (*LFSMetaObject, error) {
var err error
has, err := x.Get(m)
if err != nil {
return nil, err
}
if has {
m.Existing = true
return m, nil
}
sess := x.NewSession()
defer sess.Close()
if err = sess.Begin(); err != nil {
return nil, err
}
if _, err = sess.Insert(m); err != nil {
return nil, err
}
return m, sess.Commit()
}
// GetLFSMetaObjectByOid selects a LFSMetaObject entry from database by its OID.
// It may return ErrLFSObjectNotExist or a database error. If the error is nil,
// the returned pointer is a valid LFSMetaObject.
func GetLFSMetaObjectByOid(oid string) (*LFSMetaObject, error) {
if len(oid) == 0 {
return nil, ErrLFSObjectNotExist
}
m := &LFSMetaObject{Oid: oid}
has, err := x.Get(m)
if err != nil {
return nil, err
} else if !has {
return nil, ErrLFSObjectNotExist
}
return m, nil
}
// RemoveLFSMetaObjectByOid removes a LFSMetaObject entry from database by its OID.
// It may return ErrLFSObjectNotExist or a database error.
func RemoveLFSMetaObjectByOid(oid string) error {
if len(oid) == 0 {
return ErrLFSObjectNotExist
}
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
m := &LFSMetaObject{Oid: oid}
if _, err := sess.Delete(m); err != nil {
return err
}
return sess.Commit()
}
// AfterSet stores the LFSMetaObject creation time in the database as local time.
func (m *LFSMetaObject) AfterSet(colName string, _ xorm.Cell) {
switch colName {
case "created_unix":
m.Created = time.Unix(m.CreatedUnix, 0).Local()
}
}
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