forgejo-federation/models/repo_transfer.go
zeripath 33a8eec33e
Retry rename on lock induced failures (#16435)
* Retry rename on lock induced failures

Due to external locking on Windows it is possible for an
os.Rename to fail if the files or directories are being
used elsewhere.

This PR simply suggests retrying the rename again similar
to how we handle the os.Remove problems.

Fix #16427

Signed-off-by: Andrew Thornton <art27@cantab.net>

* resolve CI fail

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
2021-07-15 11:46:07 -04:00

397 lines
11 KiB
Go

// Copyright 2021 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 models
import (
"fmt"
"os"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
)
// RepoTransfer is used to manage repository transfers
type RepoTransfer struct {
ID int64 `xorm:"pk autoincr"`
DoerID int64
Doer *User `xorm:"-"`
RecipientID int64
Recipient *User `xorm:"-"`
RepoID int64
TeamIDs []int64
Teams []*Team `xorm:"-"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX NOT NULL created"`
UpdatedUnix timeutil.TimeStamp `xorm:"INDEX NOT NULL updated"`
}
// LoadAttributes fetches the transfer recipient from the database
func (r *RepoTransfer) LoadAttributes() error {
if r.Recipient == nil {
u, err := GetUserByID(r.RecipientID)
if err != nil {
return err
}
r.Recipient = u
}
if r.Recipient.IsOrganization() && len(r.TeamIDs) != len(r.Teams) {
for _, v := range r.TeamIDs {
team, err := GetTeamByID(v)
if err != nil {
return err
}
if team.OrgID != r.Recipient.ID {
return fmt.Errorf("team %d belongs not to org %d", v, r.Recipient.ID)
}
r.Teams = append(r.Teams, team)
}
}
if r.Doer == nil {
u, err := GetUserByID(r.DoerID)
if err != nil {
return err
}
r.Doer = u
}
return nil
}
// CanUserAcceptTransfer checks if the user has the rights to accept/decline a repo transfer.
// For user, it checks if it's himself
// For organizations, it checks if the user is able to create repos
func (r *RepoTransfer) CanUserAcceptTransfer(u *User) bool {
if err := r.LoadAttributes(); err != nil {
log.Error("LoadAttributes: %v", err)
return false
}
if !r.Recipient.IsOrganization() {
return r.RecipientID == u.ID
}
allowed, err := CanCreateOrgRepo(r.RecipientID, u.ID)
if err != nil {
log.Error("CanCreateOrgRepo: %v", err)
return false
}
return allowed
}
// GetPendingRepositoryTransfer fetches the most recent and ongoing transfer
// process for the repository
func GetPendingRepositoryTransfer(repo *Repository) (*RepoTransfer, error) {
transfer := new(RepoTransfer)
has, err := x.Where("repo_id = ? ", repo.ID).Get(transfer)
if err != nil {
return nil, err
}
if !has {
return nil, ErrNoPendingRepoTransfer{RepoID: repo.ID}
}
return transfer, nil
}
func deleteRepositoryTransfer(e Engine, repoID int64) error {
_, err := e.Where("repo_id = ?", repoID).Delete(&RepoTransfer{})
return err
}
// CancelRepositoryTransfer marks the repository as ready and remove pending transfer entry,
// thus cancel the transfer process.
func CancelRepositoryTransfer(repo *Repository) error {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
repo.Status = RepositoryReady
if err := updateRepositoryCols(sess, repo, "status"); err != nil {
return err
}
if err := deleteRepositoryTransfer(sess, repo.ID); err != nil {
return err
}
return sess.Commit()
}
// TestRepositoryReadyForTransfer make sure repo is ready to transfer
func TestRepositoryReadyForTransfer(status RepositoryStatus) error {
switch status {
case RepositoryBeingMigrated:
return fmt.Errorf("repo is not ready, currently migrating")
case RepositoryPendingTransfer:
return ErrRepoTransferInProgress{}
}
return nil
}
// CreatePendingRepositoryTransfer transfer a repo from one owner to a new one.
// it marks the repository transfer as "pending"
func CreatePendingRepositoryTransfer(doer, newOwner *User, repoID int64, teams []*Team) error {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err
}
repo, err := getRepositoryByID(sess, repoID)
if err != nil {
return err
}
// Make sure repo is ready to transfer
if err := TestRepositoryReadyForTransfer(repo.Status); err != nil {
return err
}
repo.Status = RepositoryPendingTransfer
if err := updateRepositoryCols(sess, repo, "status"); err != nil {
return err
}
// Check if new owner has repository with same name.
if has, err := isRepositoryExist(sess, newOwner, repo.Name); err != nil {
return fmt.Errorf("IsRepositoryExist: %v", err)
} else if has {
return ErrRepoAlreadyExist{newOwner.LowerName, repo.Name}
}
transfer := &RepoTransfer{
RepoID: repo.ID,
RecipientID: newOwner.ID,
CreatedUnix: timeutil.TimeStampNow(),
UpdatedUnix: timeutil.TimeStampNow(),
DoerID: doer.ID,
TeamIDs: make([]int64, 0, len(teams)),
}
for k := range teams {
transfer.TeamIDs = append(transfer.TeamIDs, teams[k].ID)
}
if _, err := sess.Insert(transfer); err != nil {
return err
}
return sess.Commit()
}
// TransferOwnership transfers all corresponding repository items from old user to new one.
func TransferOwnership(doer *User, newOwnerName string, repo *Repository) (err error) {
repoRenamed := false
wikiRenamed := false
oldOwnerName := doer.Name
defer func() {
if !repoRenamed && !wikiRenamed {
return
}
recoverErr := recover()
if err == nil && recoverErr == nil {
return
}
if repoRenamed {
if err := util.Rename(RepoPath(newOwnerName, repo.Name), RepoPath(oldOwnerName, repo.Name)); err != nil {
log.Critical("Unable to move repository %s/%s directory from %s back to correct place %s: %v", oldOwnerName, repo.Name, RepoPath(newOwnerName, repo.Name), RepoPath(oldOwnerName, repo.Name), err)
}
}
if wikiRenamed {
if err := util.Rename(WikiPath(newOwnerName, repo.Name), WikiPath(oldOwnerName, repo.Name)); err != nil {
log.Critical("Unable to move wiki for repository %s/%s directory from %s back to correct place %s: %v", oldOwnerName, repo.Name, WikiPath(newOwnerName, repo.Name), WikiPath(oldOwnerName, repo.Name), err)
}
}
if recoverErr != nil {
log.Error("Panic within TransferOwnership: %v\n%s", recoverErr, log.Stack(2))
panic(recoverErr)
}
}()
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return fmt.Errorf("sess.Begin: %v", err)
}
newOwner, err := getUserByName(sess, newOwnerName)
if err != nil {
return fmt.Errorf("get new owner '%s': %v", newOwnerName, err)
}
newOwnerName = newOwner.Name // ensure capitalisation matches
// Check if new owner has repository with same name.
if has, err := isRepositoryExist(sess, newOwner, repo.Name); err != nil {
return fmt.Errorf("IsRepositoryExist: %v", err)
} else if has {
return ErrRepoAlreadyExist{newOwnerName, repo.Name}
}
oldOwner := repo.Owner
oldOwnerName = oldOwner.Name
// Note: we have to set value here to make sure recalculate accesses is based on
// new owner.
repo.OwnerID = newOwner.ID
repo.Owner = newOwner
repo.OwnerName = newOwner.Name
// Update repository.
if _, err := sess.ID(repo.ID).Update(repo); err != nil {
return fmt.Errorf("update owner: %v", err)
}
// Remove redundant collaborators.
collaborators, err := repo.getCollaborators(sess, ListOptions{})
if err != nil {
return fmt.Errorf("getCollaborators: %v", err)
}
// Dummy object.
collaboration := &Collaboration{RepoID: repo.ID}
for _, c := range collaborators {
if c.ID != newOwner.ID {
isMember, err := isOrganizationMember(sess, newOwner.ID, c.ID)
if err != nil {
return fmt.Errorf("IsOrgMember: %v", err)
} else if !isMember {
continue
}
}
collaboration.UserID = c.ID
if _, err := sess.Delete(collaboration); err != nil {
return fmt.Errorf("remove collaborator '%d': %v", c.ID, err)
}
}
// Remove old team-repository relations.
if oldOwner.IsOrganization() {
if err := oldOwner.removeOrgRepo(sess, repo.ID); err != nil {
return fmt.Errorf("removeOrgRepo: %v", err)
}
}
if newOwner.IsOrganization() {
if err := newOwner.getTeams(sess); err != nil {
return fmt.Errorf("GetTeams: %v", err)
}
for _, t := range newOwner.Teams {
if t.IncludesAllRepositories {
if err := t.addRepository(sess, repo); err != nil {
return fmt.Errorf("addRepository: %v", err)
}
}
}
} else if err := repo.recalculateAccesses(sess); err != nil {
// Organization called this in addRepository method.
return fmt.Errorf("recalculateAccesses: %v", err)
}
// Update repository count.
if _, err := sess.Exec("UPDATE `user` SET num_repos=num_repos+1 WHERE id=?", newOwner.ID); err != nil {
return fmt.Errorf("increase new owner repository count: %v", err)
} else if _, err := sess.Exec("UPDATE `user` SET num_repos=num_repos-1 WHERE id=?", oldOwner.ID); err != nil {
return fmt.Errorf("decrease old owner repository count: %v", err)
}
if err := watchRepo(sess, doer.ID, repo.ID, true); err != nil {
return fmt.Errorf("watchRepo: %v", err)
}
// Remove watch for organization.
if oldOwner.IsOrganization() {
if err := watchRepo(sess, oldOwner.ID, repo.ID, false); err != nil {
return fmt.Errorf("watchRepo [false]: %v", err)
}
}
// Delete labels that belong to the old organization and comments that added these labels
if oldOwner.IsOrganization() {
if _, err := sess.Exec(`DELETE FROM issue_label WHERE issue_label.id IN (
SELECT il_too.id FROM (
SELECT il_too_too.id
FROM issue_label AS il_too_too
INNER JOIN label ON il_too_too.label_id = label.id
INNER JOIN issue on issue.id = il_too_too.issue_id
WHERE
issue.repo_id = ? AND ((label.org_id = 0 AND issue.repo_id != label.repo_id) OR (label.repo_id = 0 AND label.org_id != ?))
) AS il_too )`, repo.ID, newOwner.ID); err != nil {
return fmt.Errorf("Unable to remove old org labels: %v", err)
}
if _, err := sess.Exec(`DELETE FROM comment WHERE comment.id IN (
SELECT il_too.id FROM (
SELECT com.id
FROM comment AS com
INNER JOIN label ON com.label_id = label.id
INNER JOIN issue ON issue.id = com.issue_id
WHERE
com.type = ? AND issue.repo_id = ? AND ((label.org_id = 0 AND issue.repo_id != label.repo_id) OR (label.repo_id = 0 AND label.org_id != ?))
) AS il_too)`, CommentTypeLabel, repo.ID, newOwner.ID); err != nil {
return fmt.Errorf("Unable to remove old org label comments: %v", err)
}
}
// Rename remote repository to new path and delete local copy.
dir := UserPath(newOwner.Name)
if err := os.MkdirAll(dir, os.ModePerm); err != nil {
return fmt.Errorf("Failed to create dir %s: %v", dir, err)
}
if err := util.Rename(RepoPath(oldOwner.Name, repo.Name), RepoPath(newOwner.Name, repo.Name)); err != nil {
return fmt.Errorf("rename repository directory: %v", err)
}
repoRenamed = true
// Rename remote wiki repository to new path and delete local copy.
wikiPath := WikiPath(oldOwner.Name, repo.Name)
if isExist, err := util.IsExist(wikiPath); err != nil {
log.Error("Unable to check if %s exists. Error: %v", wikiPath, err)
return err
} else if isExist {
if err := util.Rename(wikiPath, WikiPath(newOwner.Name, repo.Name)); err != nil {
return fmt.Errorf("rename repository wiki: %v", err)
}
wikiRenamed = true
}
if err := deleteRepositoryTransfer(sess, repo.ID); err != nil {
return fmt.Errorf("deleteRepositoryTransfer: %v", err)
}
repo.Status = RepositoryReady
if err := updateRepositoryCols(sess, repo, "status"); err != nil {
return err
}
// If there was previously a redirect at this location, remove it.
if err := deleteRepoRedirect(sess, newOwner.ID, repo.Name); err != nil {
return fmt.Errorf("delete repo redirect: %v", err)
}
if err := newRepoRedirect(sess, oldOwner.ID, repo.ID, repo.Name, repo.Name); err != nil {
return fmt.Errorf("newRepoRedirect: %v", err)
}
return sess.Commit()
}