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	Change all license headers to comply with REUSE specification. Fix #16132 Co-authored-by: flynnnnnnnnnn <flynnnnnnnnnn@github> Co-authored-by: John Olheiser <john.olheiser@gmail.com>
		
			
				
	
	
		
			116 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			116 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package v1_12 //nolint
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import (
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	"fmt"
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	"math"
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	"path/filepath"
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	"strings"
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	"time"
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	"code.gitea.io/gitea/modules/git"
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	"code.gitea.io/gitea/modules/log"
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	"code.gitea.io/gitea/modules/setting"
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	"xorm.io/xorm"
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)
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func RefixMergeBase(x *xorm.Engine) error {
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	type Repository struct {
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		ID        int64 `xorm:"pk autoincr"`
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		OwnerID   int64 `xorm:"UNIQUE(s) index"`
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		OwnerName string
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		LowerName string `xorm:"UNIQUE(s) INDEX NOT NULL"`
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		Name      string `xorm:"INDEX NOT NULL"`
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	}
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	type PullRequest struct {
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		ID         int64 `xorm:"pk autoincr"`
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		Index      int64
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		HeadRepoID int64 `xorm:"INDEX"`
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		BaseRepoID int64 `xorm:"INDEX"`
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		HeadBranch string
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		BaseBranch string
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		MergeBase  string `xorm:"VARCHAR(40)"`
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		HasMerged      bool   `xorm:"INDEX"`
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		MergedCommitID string `xorm:"VARCHAR(40)"`
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	}
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	limit := setting.Database.IterateBufferSize
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	if limit <= 0 {
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		limit = 50
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	}
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	ticker := time.NewTicker(5 * time.Second)
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	defer ticker.Stop()
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	count, err := x.Where("has_merged = ?", true).Count(new(PullRequest))
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	if err != nil {
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		return err
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	}
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	log.Info("%d Merged Pull Request(s) to migrate ...", count)
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	i := 0
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	start := 0
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	for {
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		prs := make([]PullRequest, 0, 50)
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		if err := x.Limit(limit, start).Asc("id").Where("has_merged = ?", true).Find(&prs); err != nil {
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			return fmt.Errorf("Find: %w", err)
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		}
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		if len(prs) == 0 {
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			break
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		}
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		start += 50
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		for _, pr := range prs {
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			baseRepo := &Repository{ID: pr.BaseRepoID}
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			has, err := x.Table("repository").Get(baseRepo)
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			if err != nil {
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				return fmt.Errorf("Unable to get base repo %d %w", pr.BaseRepoID, err)
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			}
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			if !has {
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				log.Error("Missing base repo with id %d for PR ID %d", pr.BaseRepoID, pr.ID)
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				continue
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			}
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			userPath := filepath.Join(setting.RepoRootPath, strings.ToLower(baseRepo.OwnerName))
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			repoPath := filepath.Join(userPath, strings.ToLower(baseRepo.Name)+".git")
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			gitRefName := fmt.Sprintf("refs/pull/%d/head", pr.Index)
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			parentsString, _, err := git.NewCommand(git.DefaultContext, "rev-list", "--parents", "-n", "1").AddDynamicArguments(pr.MergedCommitID).RunStdString(&git.RunOpts{Dir: repoPath})
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			if err != nil {
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				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)
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				continue
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			}
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			parents := strings.Split(strings.TrimSpace(parentsString), " ")
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			if len(parents) < 3 {
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				continue
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			}
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			// we should recalculate
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			refs := append([]string{}, parents[1:]...)
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			refs = append(refs, gitRefName)
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			cmd := git.NewCommand(git.DefaultContext, "merge-base").AddDashesAndList(refs...)
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			pr.MergeBase, _, err = cmd.RunStdString(&git.RunOpts{Dir: repoPath})
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			if err != nil {
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				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)
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				continue
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			}
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			pr.MergeBase = strings.TrimSpace(pr.MergeBase)
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			x.ID(pr.ID).Cols("merge_base").Update(pr)
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			i++
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			select {
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			case <-ticker.C:
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				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))
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			default:
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			}
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		}
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	}
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	log.Info("Completed migrating %d Pull Request(s) in: %d batches", count, int(math.Ceil(float64(i)/float64(limit))))
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	return nil
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}
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