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// Copyright 2020 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.
package migrations
import (
"fmt"
"math"
"path/filepath"
"strings"
"time"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
)
func fixMergeBase(x *xorm.Engine) error {
type Repository struct {
ID int64 `xorm:"pk autoincr"`
OwnerID int64 `xorm:"UNIQUE(s) index"`
OwnerName string
LowerName string `xorm:"UNIQUE(s) INDEX NOT NULL"`
Name string `xorm:"INDEX NOT NULL"`
}
type PullRequest struct {
ID int64 `xorm:"pk autoincr"`
Index int64
HeadRepoID int64 `xorm:"INDEX"`
BaseRepoID int64 `xorm:"INDEX"`
HeadBranch string
BaseBranch string
MergeBase string `xorm:"VARCHAR(40)"`
HasMerged bool `xorm:"INDEX"`
MergedCommitID string `xorm:"VARCHAR(40)"`
}
limit := setting.Database.IterateBufferSize
if limit <= 0 {
limit = 50
}
ticker := time.NewTicker(5 * time.Second)
defer ticker.Stop()
count, err := x.Count(new(PullRequest))
if err != nil {
return err
}
log.Info("%d Pull Request(s) to migrate ...", count)
i := 0
start := 0
for {
prs := make([]PullRequest, 0, 50)
if err := x.Limit(limit, start).Asc("id").Find(&prs); err != nil {
return fmt.Errorf("Find: %w", err)
}
if len(prs) == 0 {
break
}
start += 50
for _, pr := range prs {
baseRepo := &Repository{ID: pr.BaseRepoID}
has, err := x.Table("repository").Get(baseRepo)
if err != nil {
return fmt.Errorf("Unable to get base repo %d %w", pr.BaseRepoID, err)
}
if !has {
log.Error("Missing base repo with id %d for PR ID %d", pr.BaseRepoID, pr.ID)
continue
}
userPath := filepath.Join(setting.RepoRootPath, strings.ToLower(baseRepo.OwnerName))
repoPath := filepath.Join(userPath, strings.ToLower(baseRepo.Name)+".git")
gitRefName := fmt.Sprintf("refs/pull/%d/head", pr.Index)
if !pr.HasMerged {
var err error
pr.MergeBase, _, err = git.NewCommand(git.DefaultContext, "merge-base").AddDashesAndList(pr.BaseBranch, gitRefName).RunStdString(&git.RunOpts{Dir: repoPath})
if err != nil {
var err2 error
pr.MergeBase, _, err2 = git.NewCommand(git.DefaultContext, "rev-parse").AddDynamicArguments(git.BranchPrefix + pr.BaseBranch).RunStdString(&git.RunOpts{Dir: repoPath})
if err2 != nil {
log.Error("Unable to get merge base for PR ID %d, Index %d in %s/%s. Error: %v & %v", pr.ID, pr.Index, baseRepo.OwnerName, baseRepo.Name, err, err2)
continue
}
}
} else {
parentsString, _, err := git.NewCommand(git.DefaultContext, "rev-list", "--parents", "-n", "1").AddDynamicArguments(pr.MergedCommitID).RunStdString(&git.RunOpts{Dir: repoPath})
if err != nil {
log.Error("Unable to get parents for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, baseRepo.OwnerName, baseRepo.Name, err)
continue
}
parents := strings.Split(strings.TrimSpace(parentsString), " ")
if len(parents) < 2 {
continue
}
refs := append([]string{}, parents[1:]...)
refs = append(refs, gitRefName)
cmd := git.NewCommand(git.DefaultContext, "merge-base").AddDashesAndList(refs...)
pr.MergeBase, _, err = cmd.RunStdString(&git.RunOpts{Dir: repoPath})
if err != nil {
log.Error("Unable to get merge base for merged PR ID %d, Index %d in %s/%s. Error: %v", pr.ID, pr.Index, baseRepo.OwnerName, baseRepo.Name, err)
continue
}
}
pr.MergeBase = strings.TrimSpace(pr.MergeBase)
x.ID(pr.ID).Cols("merge_base").Update(pr)
i++
select {
case <-ticker.C:
log.Info("%d/%d (%2.0f%%) Pull Request(s) migrated in %d batches. %d PRs Remaining ...", i, count, float64(i)/float64(count)*100, int(math.Ceil(float64(i)/float64(limit))), count-int64(i))
default:
}
}
}
log.Info("Completed migrating %d Pull Request(s) in: %d batches", count, int(math.Ceil(float64(i)/float64(limit))))
return nil
}
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