mirror of
				https://gitee.com/gitea/gitea
				synced 2025-11-04 16:40:24 +08:00 
			
		
		
		
	Add LFS Migration and Mirror (#14726)
* Implemented LFS client. * Implemented scanning for pointer files. * Implemented downloading of lfs files. * Moved model-dependent code into services. * Removed models dependency. Added TryReadPointerFromBuffer. * Migrated code from service to module. * Centralised storage creation. * Removed dependency from models. * Moved ContentStore into modules. * Share structs between server and client. * Moved method to services. * Implemented lfs download on clone. * Implemented LFS sync on clone and mirror update. * Added form fields. * Updated templates. * Fixed condition. * Use alternate endpoint. * Added missing methods. * Fixed typo and make linter happy. * Detached pointer parser from gogit dependency. * Fixed TestGetLFSRange test. * Added context to support cancellation. * Use ReadFull to probably read more data. * Removed duplicated code from models. * Moved scan implementation into pointer_scanner_nogogit. * Changed method name. * Added comments. * Added more/specific log/error messages. * Embedded lfs.Pointer into models.LFSMetaObject. * Moved code from models to module. * Moved code from models to module. * Moved code from models to module. * Reduced pointer usage. * Embedded type. * Use promoted fields. * Fixed unexpected eof. * Added unit tests. * Implemented migration of local file paths. * Show an error on invalid LFS endpoints. * Hide settings if not used. * Added LFS info to mirror struct. * Fixed comment. * Check LFS endpoint. * Manage LFS settings from mirror page. * Fixed selector. * Adjusted selector. * Added more tests. * Added local filesystem migration test. * Fixed typo. * Reset settings. * Added special windows path handling. * Added unit test for HTTPClient. * Added unit test for BasicTransferAdapter. * Moved into util package. * Test if LFS endpoint is allowed. * Added support for git:// * Just use a static placeholder as the displayed url may be invalid. * Reverted to original code. * Added "Advanced Settings". * Updated wording. * Added discovery info link. * Implemented suggestion. * Fixed missing format parameter. * Added Pointer.IsValid(). * Always remove model on error. * Added suggestions. * Use channel instead of array. * Update routers/repo/migrate.go * fmt Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: zeripath <art27@cantab.net>
This commit is contained in:
		@@ -5,13 +5,9 @@
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package models
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import (
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	"crypto/sha256"
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	"encoding/hex"
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	"errors"
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	"fmt"
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	"io"
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	"path"
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	"code.gitea.io/gitea/modules/lfs"
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	"code.gitea.io/gitea/modules/timeutil"
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	"xorm.io/builder"
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@@ -19,28 +15,13 @@ import (
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// LFSMetaObject stores metadata for LFS tracked files.
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type LFSMetaObject struct {
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	ID           int64              `xorm:"pk autoincr"`
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	Oid          string             `xorm:"UNIQUE(s) INDEX NOT NULL"`
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	Size         int64              `xorm:"NOT NULL"`
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	ID           int64 `xorm:"pk autoincr"`
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	lfs.Pointer  `xorm:"extends"`
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	RepositoryID int64              `xorm:"UNIQUE(s) INDEX NOT NULL"`
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	Existing     bool               `xorm:"-"`
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	CreatedUnix  timeutil.TimeStamp `xorm:"created"`
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}
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// RelativePath returns the relative path of the lfs object
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func (m *LFSMetaObject) RelativePath() string {
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	if len(m.Oid) < 5 {
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		return m.Oid
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	}
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	return path.Join(m.Oid[0:2], m.Oid[2:4], m.Oid[4:])
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}
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// Pointer returns the string representation of an LFS pointer file
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func (m *LFSMetaObject) Pointer() string {
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	return fmt.Sprintf("%s\n%s%s\nsize %d\n", LFSMetaFileIdentifier, LFSMetaFileOidPrefix, m.Oid, m.Size)
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}
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// LFSTokenResponse defines the JSON structure in which the JWT token is stored.
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// This structure is fetched via SSH and passed by the Git LFS client to the server
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// endpoint for authorization.
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@@ -53,15 +34,6 @@ type LFSTokenResponse struct {
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// to differentiate between database and missing object errors.
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var ErrLFSObjectNotExist = errors.New("LFS Meta object does not exist")
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const (
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	// LFSMetaFileIdentifier is the string appearing at the first line of LFS pointer files.
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	// https://github.com/git-lfs/git-lfs/blob/master/docs/spec.md
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	LFSMetaFileIdentifier = "version https://git-lfs.github.com/spec/v1"
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	// LFSMetaFileOidPrefix appears in LFS pointer files on a line before the sha256 hash.
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	LFSMetaFileOidPrefix = "oid sha256:"
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)
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// NewLFSMetaObject stores a given populated LFSMetaObject structure in the database
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// if it is not already present.
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func NewLFSMetaObject(m *LFSMetaObject) (*LFSMetaObject, error) {
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@@ -90,16 +62,6 @@ func NewLFSMetaObject(m *LFSMetaObject) (*LFSMetaObject, error) {
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	return m, sess.Commit()
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}
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// GenerateLFSOid generates a Sha256Sum to represent an oid for arbitrary content
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func GenerateLFSOid(content io.Reader) (string, error) {
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	h := sha256.New()
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	if _, err := io.Copy(h, content); err != nil {
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		return "", err
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	}
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	sum := h.Sum(nil)
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	return hex.EncodeToString(sum), nil
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}
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// GetLFSMetaObjectByOid selects a LFSMetaObject entry from database by its OID.
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// It may return ErrLFSObjectNotExist or a database error. If the error is nil,
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// the returned pointer is a valid LFSMetaObject.
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@@ -108,7 +70,7 @@ func (repo *Repository) GetLFSMetaObjectByOid(oid string) (*LFSMetaObject, error
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		return nil, ErrLFSObjectNotExist
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	}
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	m := &LFSMetaObject{Oid: oid, RepositoryID: repo.ID}
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	m := &LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}, RepositoryID: repo.ID}
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	has, err := x.Get(m)
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	if err != nil {
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		return nil, err
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@@ -131,12 +93,12 @@ func (repo *Repository) RemoveLFSMetaObjectByOid(oid string) (int64, error) {
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		return -1, err
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	}
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	m := &LFSMetaObject{Oid: oid, RepositoryID: repo.ID}
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	m := &LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}, RepositoryID: repo.ID}
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	if _, err := sess.Delete(m); err != nil {
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		return -1, err
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	}
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	count, err := sess.Count(&LFSMetaObject{Oid: oid})
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	count, err := sess.Count(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
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	if err != nil {
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		return count, err
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	}
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@@ -168,11 +130,11 @@ func (repo *Repository) CountLFSMetaObjects() (int64, error) {
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// LFSObjectAccessible checks if a provided Oid is accessible to the user
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func LFSObjectAccessible(user *User, oid string) (bool, error) {
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	if user.IsAdmin {
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		count, err := x.Count(&LFSMetaObject{Oid: oid})
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		count, err := x.Count(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
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		return (count > 0), err
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	}
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	cond := accessibleRepositoryCondition(user)
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	count, err := x.Where(cond).Join("INNER", "repository", "`lfs_meta_object`.repository_id = `repository`.id").Count(&LFSMetaObject{Oid: oid})
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	count, err := x.Where(cond).Join("INNER", "repository", "`lfs_meta_object`.repository_id = `repository`.id").Count(&LFSMetaObject{Pointer: lfs.Pointer{Oid: oid}})
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	return (count > 0), err
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}
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