mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-09-08 08:33:27 +00:00
Optimize pulls merging (#4921)
* Optimize pulls merging By utilizing `git clone -s --no-checkout` rather than cloning the whole repo. * Use sparse-checkout to speedup pulls merge * Use bytes.Buffer instead of strings.Builder for backward compatibility * Fix empty diff-tree output for repos with only the initial commit * Fix missing argument for the format string * Rework diff-tree-list generation * Remove logging code * File list for sparse-checkout must be prefix with / Otherwise, they would match all files with the same name under subdirectories. * Update onto the rebased head * Use referecen repo to avoid fetching objects
This commit is contained in:
parent
7d434376f1
commit
6ad834e236
1 changed files with 86 additions and 16 deletions
102
models/pull.go
102
models/pull.go
|
@ -5,6 +5,8 @@
|
|||
package models
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
|
@ -328,6 +330,34 @@ func (pr *PullRequest) CheckUserAllowedToMerge(doer *User) (err error) {
|
|||
return nil
|
||||
}
|
||||
|
||||
func getDiffTree(repoPath, baseBranch, headBranch string) (string, error) {
|
||||
getDiffTreeFromBranch := func(repoPath, baseBranch, headBranch string) (string, error) {
|
||||
var stdout, stderr string
|
||||
// Compute the diff-tree for sparse-checkout
|
||||
// The branch argument must be enclosed with double-quotes ("") in case it contains slashes (e.g "feature/test")
|
||||
stdout, stderr, err := process.GetManager().ExecDir(-1, repoPath,
|
||||
fmt.Sprintf("PullRequest.Merge (git diff-tree): %s", repoPath),
|
||||
"git", "diff-tree", "--no-commit-id", "--name-only", "-r", "--root", baseBranch, headBranch)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("git diff-tree [%s base:%s head:%s]: %s", repoPath, baseBranch, headBranch, stderr)
|
||||
}
|
||||
return stdout, nil
|
||||
}
|
||||
|
||||
list, err := getDiffTreeFromBranch(repoPath, baseBranch, headBranch)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
// Prefixing '/' for each entry, otherwise all files with the same name in subdirectories would be matched.
|
||||
out := bytes.Buffer{}
|
||||
scanner := bufio.NewScanner(strings.NewReader(list))
|
||||
for scanner.Scan() {
|
||||
fmt.Fprintf(&out, "/%s\n", scanner.Text())
|
||||
}
|
||||
return out.String(), nil
|
||||
}
|
||||
|
||||
// Merge merges pull request to base repository.
|
||||
// FIXME: add repoWorkingPull make sure two merges does not happen at same time.
|
||||
func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle MergeStyle, message string) (err error) {
|
||||
|
@ -371,36 +401,76 @@ func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle
|
|||
var stderr string
|
||||
if _, stderr, err = process.GetManager().ExecTimeout(5*time.Minute,
|
||||
fmt.Sprintf("PullRequest.Merge (git clone): %s", tmpBasePath),
|
||||
"git", "clone", baseGitRepo.Path, tmpBasePath); err != nil {
|
||||
"git", "clone", "-s", "--no-checkout", "-b", pr.BaseBranch, baseGitRepo.Path, tmpBasePath); err != nil {
|
||||
return fmt.Errorf("git clone: %s", stderr)
|
||||
}
|
||||
|
||||
// Check out base branch.
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git checkout): %s", tmpBasePath),
|
||||
"git", "checkout", pr.BaseBranch); err != nil {
|
||||
return fmt.Errorf("git checkout: %s", stderr)
|
||||
}
|
||||
remoteRepoName := "head_repo"
|
||||
|
||||
// Add head repo remote.
|
||||
addCacheRepo := func(staging, cache string) error {
|
||||
p := filepath.Join(staging, ".git", "objects", "info", "alternates")
|
||||
f, err := os.OpenFile(p, os.O_APPEND|os.O_WRONLY, 0600)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
data := filepath.Join(cache, "objects")
|
||||
if _, err := fmt.Fprintln(f, data); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
if err := addCacheRepo(tmpBasePath, headRepoPath); err != nil {
|
||||
return fmt.Errorf("addCacheRepo [%s -> %s]: %v", headRepoPath, tmpBasePath, err)
|
||||
}
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git remote add): %s", tmpBasePath),
|
||||
"git", "remote", "add", "head_repo", headRepoPath); err != nil {
|
||||
"git", "remote", "add", remoteRepoName, headRepoPath); err != nil {
|
||||
return fmt.Errorf("git remote add [%s -> %s]: %s", headRepoPath, tmpBasePath, stderr)
|
||||
}
|
||||
|
||||
// Merge commits.
|
||||
// Fetch head branch
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git fetch): %s", tmpBasePath),
|
||||
"git", "fetch", "head_repo"); err != nil {
|
||||
"git", "fetch", remoteRepoName); err != nil {
|
||||
return fmt.Errorf("git fetch [%s -> %s]: %s", headRepoPath, tmpBasePath, stderr)
|
||||
}
|
||||
|
||||
trackingBranch := path.Join(remoteRepoName, pr.HeadBranch)
|
||||
stagingBranch := fmt.Sprintf("%s_%s", remoteRepoName, pr.HeadBranch)
|
||||
|
||||
// Enable sparse-checkout
|
||||
sparseCheckoutList, err := getDiffTree(tmpBasePath, pr.BaseBranch, trackingBranch)
|
||||
if err != nil {
|
||||
return fmt.Errorf("getDiffTree: %v", err)
|
||||
}
|
||||
|
||||
sparseCheckoutListPath := filepath.Join(tmpBasePath, ".git", "info", "sparse-checkout")
|
||||
if err := ioutil.WriteFile(sparseCheckoutListPath, []byte(sparseCheckoutList), 0600); err != nil {
|
||||
return fmt.Errorf("Writing sparse-checkout file to %s: %v", sparseCheckoutListPath, err)
|
||||
}
|
||||
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git config): %s", tmpBasePath),
|
||||
"git", "config", "--local", "core.sparseCheckout", "true"); err != nil {
|
||||
return fmt.Errorf("git config [core.sparsecheckout -> true]: %v", stderr)
|
||||
}
|
||||
|
||||
// Read base branch index
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git read-tree): %s", tmpBasePath),
|
||||
"git", "read-tree", "HEAD"); err != nil {
|
||||
return fmt.Errorf("git read-tree HEAD: %s", stderr)
|
||||
}
|
||||
|
||||
// Merge commits.
|
||||
switch mergeStyle {
|
||||
case MergeStyleMerge:
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git merge --no-ff --no-commit): %s", tmpBasePath),
|
||||
"git", "merge", "--no-ff", "--no-commit", "head_repo/"+pr.HeadBranch); err != nil {
|
||||
"git", "merge", "--no-ff", "--no-commit", trackingBranch); err != nil {
|
||||
return fmt.Errorf("git merge --no-ff --no-commit [%s]: %v - %s", tmpBasePath, err, stderr)
|
||||
}
|
||||
|
||||
|
@ -415,7 +485,7 @@ func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle
|
|||
// Checkout head branch
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git checkout): %s", tmpBasePath),
|
||||
"git", "checkout", "-b", "head_repo_"+pr.HeadBranch, "head_repo/"+pr.HeadBranch); err != nil {
|
||||
"git", "checkout", "-b", stagingBranch, trackingBranch); err != nil {
|
||||
return fmt.Errorf("git checkout: %s", stderr)
|
||||
}
|
||||
// Rebase before merging
|
||||
|
@ -433,14 +503,14 @@ func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle
|
|||
// Merge fast forward
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git rebase): %s", tmpBasePath),
|
||||
"git", "merge", "--ff-only", "-q", "head_repo_"+pr.HeadBranch); err != nil {
|
||||
"git", "merge", "--ff-only", "-q", stagingBranch); err != nil {
|
||||
return fmt.Errorf("git merge --ff-only [%s -> %s]: %s", headRepoPath, tmpBasePath, stderr)
|
||||
}
|
||||
case MergeStyleRebaseMerge:
|
||||
// Checkout head branch
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git checkout): %s", tmpBasePath),
|
||||
"git", "checkout", "-b", "head_repo_"+pr.HeadBranch, "head_repo/"+pr.HeadBranch); err != nil {
|
||||
"git", "checkout", "-b", stagingBranch, trackingBranch); err != nil {
|
||||
return fmt.Errorf("git checkout: %s", stderr)
|
||||
}
|
||||
// Rebase before merging
|
||||
|
@ -458,7 +528,7 @@ func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle
|
|||
// Prepare merge with commit
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git merge): %s", tmpBasePath),
|
||||
"git", "merge", "--no-ff", "--no-commit", "-q", "head_repo_"+pr.HeadBranch); err != nil {
|
||||
"git", "merge", "--no-ff", "--no-commit", "-q", stagingBranch); err != nil {
|
||||
return fmt.Errorf("git merge --no-ff [%s -> %s]: %s", headRepoPath, tmpBasePath, stderr)
|
||||
}
|
||||
|
||||
|
@ -475,7 +545,7 @@ func (pr *PullRequest) Merge(doer *User, baseGitRepo *git.Repository, mergeStyle
|
|||
// Merge with squash
|
||||
if _, stderr, err = process.GetManager().ExecDir(-1, tmpBasePath,
|
||||
fmt.Sprintf("PullRequest.Merge (git squash): %s", tmpBasePath),
|
||||
"git", "merge", "-q", "--squash", "head_repo/"+pr.HeadBranch); err != nil {
|
||||
"git", "merge", "-q", "--squash", trackingBranch); err != nil {
|
||||
return fmt.Errorf("git merge --squash [%s -> %s]: %s", headRepoPath, tmpBasePath, stderr)
|
||||
}
|
||||
sig := pr.Issue.Poster.NewGitSig()
|
||||
|
|
Loading…
Reference in a new issue