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preserve users if restoring a repository on the same Gitea instance (#18604)

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When calling DumpRepository and RestoreRepository on the same Gitea
instance, the users are preserved: all labels, issues etc. belong to
the external user who is, in this particular case, the local user.

Dead code verifying g.gitServiceType.Name() == "" (i.e. plain git) is
removed. The function is never called because the plain git downloader
does not migrate anything that is associated to a user, by definition.

Errors returned by GetUserIDByExternalUserID are no longer ignored.

The userMap is used when the external user is not kown, which is the
most common case. It was only used when the external user exists
which happens less often and, as a result, every occurence of an
unknown external user required a SQL query.

Signed-off-by: Loïc Dachary <loic@dachary.org>

Co-authored-by: Loïc Dachary <loic@dachary.org>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
singuliere 2022-02-06 10:05:29 +01:00 • committed by GitHub
parent 9419dd2b62
commit 8bd89ca294
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 128 additions and 29 deletions
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81
services/migrations/gitea_uploader.go
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@ -46,6 +46,7 @@ type GiteaLocalUploader struct {
issues map[int64]*models.Issue
gitRepo *git.Repository
prHeadCache map[string]struct{}
sameApp bool
userMap map[int64]int64 // external user id mapping to user id
prCache map[int64]*models.PullRequest
gitServiceType structs.GitServiceType
@ -128,6 +129,7 @@ func (g *GiteaLocalUploader) CreateRepo(repo *base.Repository, opts base.Migrate
MirrorInterval: opts.MirrorInterval,
}, NewMigrationHTTPTransport())
g.sameApp = strings.HasPrefix(repo.OriginalURL, setting.AppURL)
g.repo = r
if err != nil {
return err
@ -256,7 +258,7 @@ func (g *GiteaLocalUploader) CreateReleases(releases ...*base.Release) error {
CreatedUnix: timeutil.TimeStamp(release.Created.Unix()),
}
if err := g.remapExternalUser(release, &rel); err != nil {
if err := g.remapUser(release, &rel); err != nil {
return err
}
@ -373,7 +375,7 @@ func (g *GiteaLocalUploader) CreateIssues(issues ...*base.Issue) error {
UpdatedUnix: timeutil.TimeStamp(issue.Updated.Unix()),
}
if err := g.remapExternalUser(issue, &is); err != nil {
if err := g.remapUser(issue, &is); err != nil {
return err
}
@ -386,7 +388,7 @@ func (g *GiteaLocalUploader) CreateIssues(issues ...*base.Issue) error {
Type: reaction.Content,
CreatedUnix: timeutil.TimeStampNow(),
}
if err := g.remapExternalUser(reaction, &res); err != nil {
if err := g.remapUser(reaction, &res); err != nil {
return err
}
is.Reactions = append(is.Reactions, &res)
@ -437,7 +439,7 @@ func (g *GiteaLocalUploader) CreateComments(comments ...*base.Comment) error {
UpdatedUnix: timeutil.TimeStamp(comment.Updated.Unix()),
}
if err := g.remapExternalUser(comment, &cm); err != nil {
if err := g.remapUser(comment, &cm); err != nil {
return err
}
@ -447,7 +449,7 @@ func (g *GiteaLocalUploader) CreateComments(comments ...*base.Comment) error {
Type: reaction.Content,
CreatedUnix: timeutil.TimeStampNow(),
}
if err := g.remapExternalUser(reaction, &res); err != nil {
if err := g.remapUser(reaction, &res); err != nil {
return err
}
cm.Reactions = append(cm.Reactions, &res)
@ -471,7 +473,7 @@ func (g *GiteaLocalUploader) CreatePullRequests(prs ...*base.PullRequest) error
return err
}
if err := g.remapExternalUser(pr, gpr.Issue); err != nil {
if err := g.remapUser(pr, gpr.Issue); err != nil {
return err
}
@ -626,7 +628,7 @@ func (g *GiteaLocalUploader) newPullRequest(pr *base.PullRequest) (*models.PullR
UpdatedUnix: timeutil.TimeStamp(pr.Updated.Unix()),
}
if err := g.remapExternalUser(pr, &issue); err != nil {
if err := g.remapUser(pr, &issue); err != nil {
return nil, err
}
@ -636,7 +638,7 @@ func (g *GiteaLocalUploader) newPullRequest(pr *base.PullRequest) (*models.PullR
Type: reaction.Content,
CreatedUnix: timeutil.TimeStampNow(),
}
if err := g.remapExternalUser(reaction, &res); err != nil {
if err := g.remapUser(reaction, &res); err != nil {
return nil, err
}
issue.Reactions = append(issue.Reactions, &res)
@ -710,7 +712,7 @@ func (g *GiteaLocalUploader) CreateReviews(reviews ...*base.Review) error {
UpdatedUnix: timeutil.TimeStamp(review.CreatedAt.Unix()),
}
if err := g.remapExternalUser(review, &cm); err != nil {
if err := g.remapUser(review, &cm); err != nil {
return err
}
@ -773,7 +775,7 @@ func (g *GiteaLocalUploader) CreateReviews(reviews ...*base.Review) error {
UpdatedUnix: timeutil.TimeStamp(comment.UpdatedAt.Unix()),
}
if err := g.remapExternalUser(review, &c); err != nil {
if err := g.remapUser(review, &c); err != nil {
return err
}
@ -816,23 +818,52 @@ func (g *GiteaLocalUploader) Finish() error {
return repo_model.UpdateRepositoryCols(g.repo, "status")
}
func (g *GiteaLocalUploader) remapExternalUser(source user_model.ExternalUserMigrated, target user_model.ExternalUserRemappable) (err error) {
userid, ok := g.userMap[source.GetExternalID()]
tp := g.gitServiceType.Name()
if !ok && tp != "" {
userid, err = user_model.GetUserIDByExternalUserID(tp, fmt.Sprintf("%d", source.GetExternalID()))
if err != nil {
log.Error("GetUserIDByExternalUserID: %v", err)
}
if userid > 0 {
g.userMap[source.GetExternalID()] = userid
}
func (g *GiteaLocalUploader) remapUser(source user_model.ExternalUserMigrated, target user_model.ExternalUserRemappable) error {
var userid int64
var err error
if g.sameApp {
userid, err = g.remapLocalUser(source, target)
} else {
userid, err = g.remapExternalUser(source, target)
}
if err != nil {
return err
}
if userid > 0 {
err = target.RemapExternalUser("", 0, userid)
} else {
err = target.RemapExternalUser(source.GetExternalName(), source.GetExternalID(), g.doer.ID)
return target.RemapExternalUser("", 0, userid)
}
return
return target.RemapExternalUser(source.GetExternalName(), source.GetExternalID(), g.doer.ID)
}
func (g *GiteaLocalUploader) remapLocalUser(source user_model.ExternalUserMigrated, target user_model.ExternalUserRemappable) (int64, error) {
userid, ok := g.userMap[source.GetExternalID()]
if !ok {
name, err := user_model.GetUserNameByID(g.ctx, source.GetExternalID())
if err != nil {
return 0, err
}
// let's not reuse an ID when the user was deleted or has a different user name
if name != source.GetExternalName() {
userid = 0
} else {
userid = source.GetExternalID()
}
g.userMap[source.GetExternalID()] = userid
}
return userid, nil
}
func (g *GiteaLocalUploader) remapExternalUser(source user_model.ExternalUserMigrated, target user_model.ExternalUserRemappable) (userid int64, err error) {
userid, ok := g.userMap[source.GetExternalID()]
if !ok {
userid, err = user_model.GetUserIDByExternalUserID(g.gitServiceType.Name(), fmt.Sprintf("%d", source.GetExternalID()))
if err != nil {
log.Error("GetUserIDByExternalUserID: %v", err)
return 0, err
}
g.userMap[source.GetExternalID()] = userid
}
return userid, nil
}