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Strangely #19038 appears to relate to an issue whereby a tag appears to be listed in `git show-ref --tags` but then does not appear when `git show-ref --tags -- short_name` is called. As a solution though I propose to stop the second call as it is unnecessary and only likely to cause problems. I've also noticed that the tags calls are wildly inefficient and aren't using the common cat-files - so these have been added. I've also noticed that the git commit-graph is not being written on mirroring - so I've also added writing this to the migration which should improve mirror rendering somewhat. Fix #19038 Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: 6543 <6543@obermui.de>
134 lines
3.1 KiB
Go
134 lines
3.1 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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//go:build !gogit
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// +build !gogit
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package git
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import (
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"errors"
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"io"
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"code.gitea.io/gitea/modules/log"
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)
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// IsTagExist returns true if given tag exists in the repository.
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func (repo *Repository) IsTagExist(name string) bool {
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if name == "" {
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return false
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}
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return repo.IsReferenceExist(TagPrefix + name)
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}
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// GetTags returns all tags of the repository.
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// returning at most limit tags, or all if limit is 0.
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func (repo *Repository) GetTags(skip, limit int) (tags []string, err error) {
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tags, _, err = callShowRef(repo.Ctx, repo.Path, TagPrefix, "--tags", skip, limit)
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return
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}
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// GetTagType gets the type of the tag, either commit (simple) or tag (annotated)
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func (repo *Repository) GetTagType(id SHA1) (string, error) {
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wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
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defer cancel()
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_, err := wr.Write([]byte(id.String() + "\n"))
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if err != nil {
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return "", err
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}
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_, typ, _, err := ReadBatchLine(rd)
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if IsErrNotExist(err) {
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return "", ErrNotExist{ID: id.String()}
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}
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return typ, nil
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}
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func (repo *Repository) getTag(tagID SHA1, name string) (*Tag, error) {
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t, ok := repo.tagCache.Get(tagID.String())
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if ok {
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log.Debug("Hit cache: %s", tagID)
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tagClone := *t.(*Tag)
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tagClone.Name = name // This is necessary because lightweight tags may have same id
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return &tagClone, nil
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}
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tp, err := repo.GetTagType(tagID)
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if err != nil {
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return nil, err
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}
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// Get the commit ID and tag ID (may be different for annotated tag) for the returned tag object
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commitIDStr, err := repo.GetTagCommitID(name)
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if err != nil {
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// every tag should have a commit ID so return all errors
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return nil, err
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}
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commitID, err := NewIDFromString(commitIDStr)
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if err != nil {
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return nil, err
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}
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// If type is "commit, the tag is a lightweight tag
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if ObjectType(tp) == ObjectCommit {
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commit, err := repo.GetCommit(commitIDStr)
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if err != nil {
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return nil, err
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}
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tag := &Tag{
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Name: name,
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ID: tagID,
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Object: commitID,
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Type: tp,
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Tagger: commit.Committer,
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Message: commit.Message(),
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}
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repo.tagCache.Set(tagID.String(), tag)
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return tag, nil
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}
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// The tag is an annotated tag with a message.
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wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
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defer cancel()
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if _, err := wr.Write([]byte(tagID.String() + "\n")); err != nil {
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return nil, err
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}
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_, typ, size, err := ReadBatchLine(rd)
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if err != nil {
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if errors.Is(err, io.EOF) || IsErrNotExist(err) {
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return nil, ErrNotExist{ID: tagID.String()}
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}
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return nil, err
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}
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if typ != "tag" {
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return nil, ErrNotExist{ID: tagID.String()}
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}
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// then we need to parse the tag
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// and load the commit
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data, err := io.ReadAll(io.LimitReader(rd, size))
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if err != nil {
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return nil, err
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}
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_, err = rd.Discard(1)
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if err != nil {
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return nil, err
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}
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tag, err := parseTagData(data)
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if err != nil {
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return nil, err
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}
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tag.Name = name
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tag.ID = tagID
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tag.Type = tp
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repo.tagCache.Set(tagID.String(), tag)
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return tag, nil
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}
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