forgejo/modules/repository/generate.go
zeripath 9302eba971
DBContext is just a Context (#17100)
* DBContext is just a Context

This PR removes some of the specialness from the DBContext and makes it context
This allows us to simplify the GetEngine code to wrap around any context in future
and means that we can change our loadRepo(e Engine) functions to simply take contexts.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* fix unit tests

Signed-off-by: Andrew Thornton <art27@cantab.net>

* another place that needs to set the initial context

Signed-off-by: Andrew Thornton <art27@cantab.net>

* avoid race

Signed-off-by: Andrew Thornton <art27@cantab.net>

* change attachment error

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-09-23 23:45:36 +08:00

280 lines
8.3 KiB
Go

// Copyright 2019 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 repository
import (
"context"
"fmt"
"os"
"path"
"path/filepath"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/util"
"github.com/huandu/xstrings"
)
type transformer struct {
Name string
Transform func(string) string
}
type expansion struct {
Name string
Value string
Transformers []transformer
}
var defaultTransformers = []transformer{
{Name: "SNAKE", Transform: xstrings.ToSnakeCase},
{Name: "KEBAB", Transform: xstrings.ToKebabCase},
{Name: "CAMEL", Transform: func(str string) string {
return xstrings.FirstRuneToLower(xstrings.ToCamelCase(str))
}},
{Name: "PASCAL", Transform: xstrings.ToCamelCase},
{Name: "LOWER", Transform: strings.ToLower},
{Name: "UPPER", Transform: strings.ToUpper},
{Name: "TITLE", Transform: strings.Title},
}
func generateExpansion(src string, templateRepo, generateRepo *models.Repository) string {
expansions := []expansion{
{Name: "REPO_NAME", Value: generateRepo.Name, Transformers: defaultTransformers},
{Name: "TEMPLATE_NAME", Value: templateRepo.Name, Transformers: defaultTransformers},
{Name: "REPO_DESCRIPTION", Value: generateRepo.Description, Transformers: nil},
{Name: "TEMPLATE_DESCRIPTION", Value: templateRepo.Description, Transformers: nil},
{Name: "REPO_OWNER", Value: generateRepo.OwnerName, Transformers: defaultTransformers},
{Name: "TEMPLATE_OWNER", Value: templateRepo.OwnerName, Transformers: defaultTransformers},
{Name: "REPO_LINK", Value: generateRepo.Link(), Transformers: nil},
{Name: "TEMPLATE_LINK", Value: templateRepo.Link(), Transformers: nil},
{Name: "REPO_HTTPS_URL", Value: generateRepo.CloneLink().HTTPS, Transformers: nil},
{Name: "TEMPLATE_HTTPS_URL", Value: templateRepo.CloneLink().HTTPS, Transformers: nil},
{Name: "REPO_SSH_URL", Value: generateRepo.CloneLink().SSH, Transformers: nil},
{Name: "TEMPLATE_SSH_URL", Value: templateRepo.CloneLink().SSH, Transformers: nil},
}
var expansionMap = make(map[string]string)
for _, e := range expansions {
expansionMap[e.Name] = e.Value
for _, tr := range e.Transformers {
expansionMap[fmt.Sprintf("%s_%s", e.Name, tr.Name)] = tr.Transform(e.Value)
}
}
return os.Expand(src, func(key string) string {
if expansion, ok := expansionMap[key]; ok {
return expansion
}
return key
})
}
func checkGiteaTemplate(tmpDir string) (*models.GiteaTemplate, error) {
gtPath := filepath.Join(tmpDir, ".gitea", "template")
if _, err := os.Stat(gtPath); os.IsNotExist(err) {
return nil, nil
} else if err != nil {
return nil, err
}
content, err := os.ReadFile(gtPath)
if err != nil {
return nil, err
}
gt := &models.GiteaTemplate{
Path: gtPath,
Content: content,
}
return gt, nil
}
func generateRepoCommit(repo, templateRepo, generateRepo *models.Repository, tmpDir string) error {
commitTimeStr := time.Now().Format(time.RFC3339)
authorSig := repo.Owner.NewGitSig()
// Because this may call hooks we should pass in the environment
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+authorSig.Name,
"GIT_AUTHOR_EMAIL="+authorSig.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_NAME="+authorSig.Name,
"GIT_COMMITTER_EMAIL="+authorSig.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
// Clone to temporary path and do the init commit.
templateRepoPath := templateRepo.RepoPath()
if err := git.Clone(templateRepoPath, tmpDir, git.CloneRepoOptions{
Depth: 1,
Branch: templateRepo.DefaultBranch,
}); err != nil {
return fmt.Errorf("git clone: %v", err)
}
if err := util.RemoveAll(path.Join(tmpDir, ".git")); err != nil {
return fmt.Errorf("remove git dir: %v", err)
}
// Variable expansion
gt, err := checkGiteaTemplate(tmpDir)
if err != nil {
return fmt.Errorf("checkGiteaTemplate: %v", err)
}
if gt != nil {
if err := util.Remove(gt.Path); err != nil {
return fmt.Errorf("remove .giteatemplate: %v", err)
}
// Avoid walking tree if there are no globs
if len(gt.Globs()) > 0 {
tmpDirSlash := strings.TrimSuffix(filepath.ToSlash(tmpDir), "/") + "/"
if err := filepath.Walk(tmpDirSlash, func(path string, info os.FileInfo, walkErr error) error {
if walkErr != nil {
return walkErr
}
if info.IsDir() {
return nil
}
base := strings.TrimPrefix(filepath.ToSlash(path), tmpDirSlash)
for _, g := range gt.Globs() {
if g.Match(base) {
content, err := os.ReadFile(path)
if err != nil {
return err
}
if err := os.WriteFile(path,
[]byte(generateExpansion(string(content), templateRepo, generateRepo)),
0644); err != nil {
return err
}
break
}
}
return nil
}); err != nil {
return err
}
}
}
if err := git.InitRepository(tmpDir, false); err != nil {
return err
}
repoPath := repo.RepoPath()
if stdout, err := git.NewCommand("remote", "add", "origin", repoPath).
SetDescription(fmt.Sprintf("generateRepoCommit (git remote add): %s to %s", templateRepoPath, tmpDir)).
RunInDirWithEnv(tmpDir, env); err != nil {
log.Error("Unable to add %v as remote origin to temporary repo to %s: stdout %s\nError: %v", repo, tmpDir, stdout, err)
return fmt.Errorf("git remote add: %v", err)
}
return initRepoCommit(tmpDir, repo, repo.Owner, templateRepo.DefaultBranch)
}
func generateGitContent(ctx context.Context, repo, templateRepo, generateRepo *models.Repository) (err error) {
tmpDir, err := os.MkdirTemp(os.TempDir(), "gitea-"+repo.Name)
if err != nil {
return fmt.Errorf("Failed to create temp dir for repository %s: %v", repo.RepoPath(), err)
}
defer func() {
if err := util.RemoveAll(tmpDir); err != nil {
log.Error("RemoveAll: %v", err)
}
}()
if err = generateRepoCommit(repo, templateRepo, generateRepo, tmpDir); err != nil {
return fmt.Errorf("generateRepoCommit: %v", err)
}
// re-fetch repo
if repo, err = models.GetRepositoryByIDCtx(ctx, repo.ID); err != nil {
return fmt.Errorf("getRepositoryByID: %v", err)
}
repo.DefaultBranch = templateRepo.DefaultBranch
gitRepo, err := git.OpenRepository(repo.RepoPath())
if err != nil {
return fmt.Errorf("openRepository: %v", err)
}
defer gitRepo.Close()
if err = gitRepo.SetDefaultBranch(repo.DefaultBranch); err != nil {
return fmt.Errorf("setDefaultBranch: %v", err)
}
if err = models.UpdateRepositoryCtx(ctx, repo, false); err != nil {
return fmt.Errorf("updateRepository: %v", err)
}
return nil
}
// GenerateGitContent generates git content from a template repository
func GenerateGitContent(ctx context.Context, templateRepo, generateRepo *models.Repository) error {
if err := generateGitContent(ctx, generateRepo, templateRepo, generateRepo); err != nil {
return err
}
if err := generateRepo.UpdateSize(ctx); err != nil {
return fmt.Errorf("failed to update size for repository: %v", err)
}
if err := models.CopyLFS(ctx, generateRepo, templateRepo); err != nil {
return fmt.Errorf("failed to copy LFS: %v", err)
}
return nil
}
// GenerateRepository generates a repository from a template
func GenerateRepository(ctx context.Context, doer, owner *models.User, templateRepo *models.Repository, opts models.GenerateRepoOptions) (_ *models.Repository, err error) {
generateRepo := &models.Repository{
OwnerID: owner.ID,
Owner: owner,
OwnerName: owner.Name,
Name: opts.Name,
LowerName: strings.ToLower(opts.Name),
Description: opts.Description,
IsPrivate: opts.Private,
IsEmpty: !opts.GitContent || templateRepo.IsEmpty,
IsFsckEnabled: templateRepo.IsFsckEnabled,
TemplateID: templateRepo.ID,
TrustModel: templateRepo.TrustModel,
}
if err = models.CreateRepository(ctx, doer, owner, generateRepo, false); err != nil {
return nil, err
}
repoPath := generateRepo.RepoPath()
isExist, err := util.IsExist(repoPath)
if err != nil {
log.Error("Unable to check if %s exists. Error: %v", repoPath, err)
return nil, err
}
if isExist {
return nil, models.ErrRepoFilesAlreadyExist{
Uname: generateRepo.OwnerName,
Name: generateRepo.Name,
}
}
if err = checkInitRepository(owner.Name, generateRepo.Name); err != nil {
return generateRepo, err
}
return generateRepo, nil
}