forgejo-federation/modules/git/repo_branch_gogit.go
zeripath 196593e2e9
More efficiently parse shas for shaPostProcessor (#16101)
* More efficiently parse shas for shaPostProcessor

The shaPostProcessor currently repeatedly calls git rev-parse --verify on both backends
which is fine if there is only one thing that matches a sha - however if there are
multiple things then this becomes wildly inefficient.

This PR provides functions for both backends which are much faster to use.

Fix #16092

* Add ShaExistCache to RenderContext

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
2021-06-21 00:39:12 +02:00

80 lines
1.9 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2018 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.
// +build gogit
package git
import (
"strings"
"github.com/go-git/go-git/v5/plumbing"
)
// IsObjectExist returns true if given reference exists in the repository.
func (repo *Repository) IsObjectExist(name string) bool {
if name == "" {
return false
}
_, err := repo.gogitRepo.ResolveRevision(plumbing.Revision(name))
return err == nil
}
// IsReferenceExist returns true if given reference exists in the repository.
func (repo *Repository) IsReferenceExist(name string) bool {
if name == "" {
return false
}
reference, err := repo.gogitRepo.Reference(plumbing.ReferenceName(name), true)
if err != nil {
return false
}
return reference.Type() != plumbing.InvalidReference
}
// IsBranchExist returns true if given branch exists in current repository.
func (repo *Repository) IsBranchExist(name string) bool {
if name == "" {
return false
}
reference, err := repo.gogitRepo.Reference(plumbing.ReferenceName(BranchPrefix+name), true)
if err != nil {
return false
}
return reference.Type() != plumbing.InvalidReference
}
// GetBranches returns branches from the repository, skipping skip initial branches and
// returning at most limit branches, or all branches if limit is 0.
func (repo *Repository) GetBranches(skip, limit int) ([]string, int, error) {
var branchNames []string
branches, err := repo.gogitRepo.Branches()
if err != nil {
return nil, 0, err
}
i := 0
count := 0
_ = branches.ForEach(func(branch *plumbing.Reference) error {
count++
if i < skip {
i++
return nil
} else if limit != 0 && count > skip+limit {
return nil
}
branchNames = append(branchNames, strings.TrimPrefix(branch.Name().String(), BranchPrefix))
return nil
})
// TODO: Sort?
return branchNames, count, nil
}