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forgejo/modules/git/repo_tree.go
Lunny Xiao 0ca13c5eae
[PORT] Refactor the usage of batch catfile (gitea#31754)
When opening a repository, it will call `ensureValidRepository` and also
`CatFileBatch`. But sometimes these will not be used until repository
closed. So it's a waste of CPU to invoke 3 times git command for every
open repository.

This PR removed all of these from `OpenRepository` but only kept
checking whether the folder exists. When a batch is necessary, the
necessary functions will be invoked.

---
Conflict resolution: Because of the removal of go-git in (#4941)
`_nogogit.go` files were either renamed or merged into the 'common'
file. Git does handle the renames correctly, but for those that were
merged has to be manually copied pasted over. The patch looks the same,
201 additions 90 deletions as the original patch.

(cherry picked from commit c03baab678ba5b2e9d974aea147e660417f5d3f7)
2024-08-26 03:48:51 +02:00

156 lines
3.5 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"bytes"
"io"
"os"
"strings"
"time"
)
// CommitTreeOpts represents the possible options to CommitTree
type CommitTreeOpts struct {
Parents []string
Message string
KeyID string
NoGPGSign bool
AlwaysSign bool
}
// CommitTree creates a commit from a given tree id for the user with provided message
func (repo *Repository) CommitTree(author, committer *Signature, tree *Tree, opts CommitTreeOpts) (ObjectID, error) {
commitTimeStr := time.Now().Format(time.RFC3339)
// Because this may call hooks we should pass in the environment
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+author.Name,
"GIT_AUTHOR_EMAIL="+author.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_NAME="+committer.Name,
"GIT_COMMITTER_EMAIL="+committer.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
cmd := NewCommand(repo.Ctx, "commit-tree").AddDynamicArguments(tree.ID.String())
for _, parent := range opts.Parents {
cmd.AddArguments("-p").AddDynamicArguments(parent)
}
messageBytes := new(bytes.Buffer)
_, _ = messageBytes.WriteString(opts.Message)
_, _ = messageBytes.WriteString("\n")
if opts.KeyID != "" || opts.AlwaysSign {
cmd.AddOptionFormat("-S%s", opts.KeyID)
}
if opts.NoGPGSign {
cmd.AddArguments("--no-gpg-sign")
}
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
err := cmd.Run(&RunOpts{
Env: env,
Dir: repo.Path,
Stdin: messageBytes,
Stdout: stdout,
Stderr: stderr,
})
if err != nil {
return nil, ConcatenateError(err, stderr.String())
}
return NewIDFromString(strings.TrimSpace(stdout.String()))
}
func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
wr, rd, cancel, err := repo.CatFileBatch(repo.Ctx)
if err != nil {
return nil, err
}
defer cancel()
_, _ = wr.Write([]byte(id.String() + "\n"))
// ignore the SHA
_, typ, size, err := ReadBatchLine(rd)
if err != nil {
return nil, err
}
switch typ {
case "tag":
resolvedID := id
data, err := io.ReadAll(io.LimitReader(rd, size))
if err != nil {
return nil, err
}
tag, err := parseTagData(id.Type(), data)
if err != nil {
return nil, err
}
commit, err := tag.Commit(repo)
if err != nil {
return nil, err
}
commit.Tree.ResolvedID = resolvedID
return &commit.Tree, nil
case "commit":
commit, err := CommitFromReader(repo, id, io.LimitReader(rd, size))
if err != nil {
return nil, err
}
if _, err := rd.Discard(1); err != nil {
return nil, err
}
commit.Tree.ResolvedID = commit.ID
return &commit.Tree, nil
case "tree":
tree := NewTree(repo, id)
tree.ResolvedID = id
objectFormat, err := repo.GetObjectFormat()
if err != nil {
return nil, err
}
tree.entries, err = catBatchParseTreeEntries(objectFormat, tree, rd, size)
if err != nil {
return nil, err
}
tree.entriesParsed = true
return tree, nil
default:
if err := DiscardFull(rd, size+1); err != nil {
return nil, err
}
return nil, ErrNotExist{
ID: id.String(),
}
}
}
// GetTree find the tree object in the repository.
func (repo *Repository) GetTree(idStr string) (*Tree, error) {
objectFormat, err := repo.GetObjectFormat()
if err != nil {
return nil, err
}
if len(idStr) != objectFormat.FullLength() {
res, err := repo.GetRefCommitID(idStr)
if err != nil {
return nil, err
}
if len(res) > 0 {
idStr = res
}
}
id, err := NewIDFromString(idStr)
if err != nil {
return nil, err
}
return repo.getTree(id)
}