gitea/models/git/branch.go

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// Copyright 2016 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"context"
"fmt"
"time"
"code.gitea.io/gitea/models/db"
repo_model "code.gitea.io/gitea/models/repo"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/timeutil"
"code.gitea.io/gitea/modules/util"
)
// ErrBranchNotExist represents an error that branch with such name does not exist.
type ErrBranchNotExist struct {
RepoID int64
BranchName string
}
// IsErrBranchNotExist checks if an error is an ErrBranchDoesNotExist.
func IsErrBranchNotExist(err error) bool {
_, ok := err.(ErrBranchNotExist)
return ok
}
func (err ErrBranchNotExist) Error() string {
return fmt.Sprintf("branch does not exist [repo_id: %d name: %s]", err.RepoID, err.BranchName)
}
func (err ErrBranchNotExist) Unwrap() error {
return util.ErrNotExist
}
// ErrBranchAlreadyExists represents an error that branch with such name already exists.
type ErrBranchAlreadyExists struct {
BranchName string
}
// IsErrBranchAlreadyExists checks if an error is an ErrBranchAlreadyExists.
func IsErrBranchAlreadyExists(err error) bool {
_, ok := err.(ErrBranchAlreadyExists)
return ok
}
func (err ErrBranchAlreadyExists) Error() string {
return fmt.Sprintf("branch already exists [name: %s]", err.BranchName)
}
func (err ErrBranchAlreadyExists) Unwrap() error {
return util.ErrAlreadyExist
}
// ErrBranchNameConflict represents an error that branch name conflicts with other branch.
type ErrBranchNameConflict struct {
BranchName string
}
// IsErrBranchNameConflict checks if an error is an ErrBranchNameConflict.
func IsErrBranchNameConflict(err error) bool {
_, ok := err.(ErrBranchNameConflict)
return ok
}
func (err ErrBranchNameConflict) Error() string {
return fmt.Sprintf("branch conflicts with existing branch [name: %s]", err.BranchName)
}
func (err ErrBranchNameConflict) Unwrap() error {
return util.ErrAlreadyExist
}
// ErrBranchesEqual represents an error that base branch is equal to the head branch.
type ErrBranchesEqual struct {
BaseBranchName string
HeadBranchName string
}
// IsErrBranchesEqual checks if an error is an ErrBranchesEqual.
func IsErrBranchesEqual(err error) bool {
_, ok := err.(ErrBranchesEqual)
return ok
}
func (err ErrBranchesEqual) Error() string {
return fmt.Sprintf("branches are equal [head: %sm base: %s]", err.HeadBranchName, err.BaseBranchName)
}
func (err ErrBranchesEqual) Unwrap() error {
return util.ErrInvalidArgument
}
// Branch represents a branch of a repository
// For those repository who have many branches, stored into database is a good choice
// for pagination, keyword search and filtering
type Branch struct {
ID int64
RepoID int64 `xorm:"UNIQUE(s)"`
Name string `xorm:"UNIQUE(s) NOT NULL"` // git's ref-name is case-sensitive internally, however, in some databases (mssql, mysql, by default), it's case-insensitive at the moment
CommitID string
CommitMessage string `xorm:"TEXT"` // it only stores the message summary (the first line)
PusherID int64
Pusher *user_model.User `xorm:"-"`
IsDeleted bool `xorm:"index"`
DeletedByID int64
DeletedBy *user_model.User `xorm:"-"`
DeletedUnix timeutil.TimeStamp `xorm:"index"`
CommitTime timeutil.TimeStamp // The commit
CreatedUnix timeutil.TimeStamp `xorm:"created"`
UpdatedUnix timeutil.TimeStamp `xorm:"updated"`
}
func (b *Branch) LoadDeletedBy(ctx context.Context) (err error) {
if b.DeletedBy == nil {
b.DeletedBy, err = user_model.GetUserByID(ctx, b.DeletedByID)
if user_model.IsErrUserNotExist(err) {
b.DeletedBy = user_model.NewGhostUser()
err = nil
}
}
return err
}
func (b *Branch) LoadPusher(ctx context.Context) (err error) {
if b.Pusher == nil && b.PusherID > 0 {
b.Pusher, err = user_model.GetUserByID(ctx, b.PusherID)
if user_model.IsErrUserNotExist(err) {
b.Pusher = user_model.NewGhostUser()
err = nil
}
}
return err
}
func init() {
db.RegisterModel(new(Branch))
db.RegisterModel(new(RenamedBranch))
}
func GetBranch(ctx context.Context, repoID int64, branchName string) (*Branch, error) {
var branch Branch
has, err := db.GetEngine(ctx).Where("repo_id=?", repoID).And("name=?", branchName).Get(&branch)
if err != nil {
return nil, err
} else if !has {
return nil, ErrBranchNotExist{
RepoID: repoID,
BranchName: branchName,
}
}
return &branch, nil
}
func AddBranches(ctx context.Context, branches []*Branch) error {
for _, branch := range branches {
if _, err := db.GetEngine(ctx).Insert(branch); err != nil {
return err
}
}
return nil
}
func GetDeletedBranchByID(ctx context.Context, repoID, branchID int64) (*Branch, error) {
var branch Branch
has, err := db.GetEngine(ctx).ID(branchID).Get(&branch)
if err != nil {
return nil, err
} else if !has {
return nil, ErrBranchNotExist{
RepoID: repoID,
}
}
if branch.RepoID != repoID {
return nil, ErrBranchNotExist{
RepoID: repoID,
}
}
if !branch.IsDeleted {
return nil, ErrBranchNotExist{
RepoID: repoID,
}
}
return &branch, nil
}
func DeleteBranches(ctx context.Context, repoID, doerID int64, branchIDs []int64) error {
return db.WithTx(ctx, func(ctx context.Context) error {
branches := make([]*Branch, 0, len(branchIDs))
if err := db.GetEngine(ctx).In("id", branchIDs).Find(&branches); err != nil {
return err
}
for _, branch := range branches {
if err := AddDeletedBranch(ctx, repoID, branch.Name, doerID); err != nil {
return err
}
}
return nil
})
}
// UpdateBranch updates the branch information in the database. If the branch exist, it will update latest commit of this branch information
// If it doest not exist, insert a new record into database
func UpdateBranch(ctx context.Context, repoID, pusherID int64, branchName string, commit *git.Commit) error {
cnt, err := db.GetEngine(ctx).Where("repo_id=? AND name=?", repoID, branchName).
Cols("commit_id, commit_message, pusher_id, commit_time, is_deleted, updated_unix").
Update(&Branch{
CommitID: commit.ID.String(),
CommitMessage: commit.Summary(),
PusherID: pusherID,
CommitTime: timeutil.TimeStamp(commit.Committer.When.Unix()),
IsDeleted: false,
})
if err != nil {
return err
}
if cnt > 0 {
return nil
}
return db.Insert(ctx, &Branch{
RepoID: repoID,
Name: branchName,
CommitID: commit.ID.String(),
CommitMessage: commit.Summary(),
PusherID: pusherID,
CommitTime: timeutil.TimeStamp(commit.Committer.When.Unix()),
})
}
// AddDeletedBranch adds a deleted branch to the database
func AddDeletedBranch(ctx context.Context, repoID int64, branchName string, deletedByID int64) error {
branch, err := GetBranch(ctx, repoID, branchName)
if err != nil {
return err
}
if branch.IsDeleted {
return nil
}
cnt, err := db.GetEngine(ctx).Where("repo_id=? AND name=? AND is_deleted=?", repoID, branchName, false).
Cols("is_deleted, deleted_by_id, deleted_unix").
Update(&Branch{
IsDeleted: true,
DeletedByID: deletedByID,
DeletedUnix: timeutil.TimeStampNow(),
})
if err != nil {
return err
}
if cnt == 0 {
return fmt.Errorf("branch %s not found or has been deleted", branchName)
}
return err
}
func RemoveDeletedBranchByID(ctx context.Context, repoID, branchID int64) error {
_, err := db.GetEngine(ctx).Where("repo_id=? AND id=? AND is_deleted = ?", repoID, branchID, true).Delete(new(Branch))
return err
}
// RemoveOldDeletedBranches removes old deleted branches
func RemoveOldDeletedBranches(ctx context.Context, olderThan time.Duration) {
// Nothing to do for shutdown or terminate
log.Trace("Doing: DeletedBranchesCleanup")
deleteBefore := time.Now().Add(-olderThan)
_, err := db.GetEngine(ctx).Where("is_deleted=? AND deleted_unix < ?", true, deleteBefore.Unix()).Delete(new(Branch))
if err != nil {
log.Error("DeletedBranchesCleanup: %v", err)
}
}
// RenamedBranch provide renamed branch log
// will check it when a branch can't be found
type RenamedBranch struct {
ID int64 `xorm:"pk autoincr"`
RepoID int64 `xorm:"INDEX NOT NULL"`
From string
To string
CreatedUnix timeutil.TimeStamp `xorm:"created"`
}
// FindRenamedBranch check if a branch was renamed
func FindRenamedBranch(ctx context.Context, repoID int64, from string) (branch *RenamedBranch, exist bool, err error) {
branch = &RenamedBranch{
RepoID: repoID,
From: from,
}
exist, err = db.GetEngine(ctx).Get(branch)
return branch, exist, err
}
// RenameBranch rename a branch
func RenameBranch(ctx context.Context, repo *repo_model.Repository, from, to string, gitAction func(isDefault bool) error) (err error) {
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
sess := db.GetEngine(ctx)
// 1. update branch in database
if n, err := sess.Where("repo_id=? AND name=?", repo.ID, from).Update(&Branch{
Name: to,
}); err != nil {
return err
} else if n <= 0 {
return ErrBranchNotExist{
RepoID: repo.ID,
BranchName: from,
}
}
// 2. update default branch if needed
isDefault := repo.DefaultBranch == from
if isDefault {
repo.DefaultBranch = to
_, err = sess.ID(repo.ID).Cols("default_branch").Update(repo)
if err != nil {
return err
}
}
// 3. Update protected branch if needed
protectedBranch, err := GetProtectedBranchRuleByName(ctx, repo.ID, from)
if err != nil {
return err
}
if protectedBranch != nil {
// there is a protect rule for this branch
protectedBranch.RuleName = to
_, err = sess.ID(protectedBranch.ID).Cols("branch_name").Update(protectedBranch)
if err != nil {
return err
}
} else {
// some glob protect rules may match this branch
protected, err := IsBranchProtected(ctx, repo.ID, from)
if err != nil {
return err
}
if protected {
return ErrBranchIsProtected
}
}
// 4. Update all not merged pull request base branch name
_, err = sess.Table("pull_request").Where("base_repo_id=? AND base_branch=? AND has_merged=?",
repo.ID, from, false).
Update(map[string]interface{}{"base_branch": to})
if err != nil {
return err
}
// 5. do git action
if err = gitAction(isDefault); err != nil {
return err
}
// 6. insert renamed branch record
renamedBranch := &RenamedBranch{
RepoID: repo.ID,
From: from,
To: to,
}
err = db.Insert(ctx, renamedBranch)
if err != nil {
return err
}
return committer.Commit()
}