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			112 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
			
		
		
	
	
			112 lines
		
	
	
		
			3.2 KiB
		
	
	
	
		
			Go
		
	
	
	
	
	
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package repository
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import (
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	"fmt"
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	"strings"
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	"time"
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	"code.gitea.io/gitea/models"
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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/structs"
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)
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// ForkRepository forks a repository
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func ForkRepository(doer, owner *models.User, oldRepo *models.Repository, name, desc string) (_ *models.Repository, err error) {
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	forkedRepo, err := oldRepo.GetUserFork(owner.ID)
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	if err != nil {
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		return nil, err
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	}
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	if forkedRepo != nil {
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		return nil, models.ErrForkAlreadyExist{
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			Uname:    owner.Name,
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			RepoName: oldRepo.FullName(),
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			ForkName: forkedRepo.FullName(),
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		}
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	}
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	repo := &models.Repository{
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		OwnerID:       owner.ID,
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		Owner:         owner,
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		OwnerName:     owner.Name,
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		Name:          name,
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		LowerName:     strings.ToLower(name),
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		Description:   desc,
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		DefaultBranch: oldRepo.DefaultBranch,
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		IsPrivate:     oldRepo.IsPrivate || oldRepo.Owner.Visibility == structs.VisibleTypePrivate,
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		IsEmpty:       oldRepo.IsEmpty,
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		IsFork:        true,
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		ForkID:        oldRepo.ID,
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	}
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	oldRepoPath := oldRepo.RepoPath()
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	err = models.WithTx(func(ctx models.DBContext) error {
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		if err = models.CreateRepository(ctx, doer, owner, repo, false); err != nil {
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			return err
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		}
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		rollbackRemoveFn := func() {
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			if repo.ID == 0 {
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				return
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			}
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			if errDelete := models.DeleteRepository(doer, owner.ID, repo.ID); errDelete != nil {
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				log.Error("Rollback deleteRepository: %v", errDelete)
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			}
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		}
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		if err = models.IncrementRepoForkNum(ctx, oldRepo.ID); err != nil {
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			rollbackRemoveFn()
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			return err
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		}
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		// copy lfs files failure should not be ignored
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		if err := models.CopyLFS(ctx, repo, oldRepo); err != nil {
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			rollbackRemoveFn()
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			return err
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		}
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		repoPath := models.RepoPath(owner.Name, repo.Name)
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		if stdout, err := git.NewCommand(
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			"clone", "--bare", oldRepoPath, repoPath).
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			SetDescription(fmt.Sprintf("ForkRepository(git clone): %s to %s", oldRepo.FullName(), repo.FullName())).
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			RunInDirTimeout(10*time.Minute, ""); err != nil {
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			log.Error("Fork Repository (git clone) Failed for %v (from %v):\nStdout: %s\nError: %v", repo, oldRepo, stdout, err)
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			rollbackRemoveFn()
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			return fmt.Errorf("git clone: %v", err)
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		}
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		if stdout, err := git.NewCommand("update-server-info").
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			SetDescription(fmt.Sprintf("ForkRepository(git update-server-info): %s", repo.FullName())).
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			RunInDir(repoPath); err != nil {
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			log.Error("Fork Repository (git update-server-info) failed for %v:\nStdout: %s\nError: %v", repo, stdout, err)
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			rollbackRemoveFn()
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			return fmt.Errorf("git update-server-info: %v", err)
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		}
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		if err = createDelegateHooks(repoPath); err != nil {
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			rollbackRemoveFn()
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			return fmt.Errorf("createDelegateHooks: %v", err)
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		}
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		return nil
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	})
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	if err != nil {
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		return nil, err
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	}
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	// even if below operations failed, it could be ignored. And they will be retried
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	ctx := models.DefaultDBContext()
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	if err = repo.UpdateSize(ctx); err != nil {
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		log.Error("Failed to update size for repository: %v", err)
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	}
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	if err := models.CopyLanguageStat(oldRepo, repo); err != nil {
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		log.Error("Copy language stat from oldRepo failed")
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	}
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	return repo, nil
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}
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