.filter(UserRepoToPerm.repository == repo).all()

                    group_perms = UsersGroupRepoToPerm.query()\

                        .filter(UsersGroupRepoToPerm.repository == repo).all()

                    for perm in user_perms:

                        UserRepoToPerm.create(perm.user, new_repo,

                                              perm.permission)

                    for perm in group_perms:

                        UsersGroupRepoToPerm.create(perm.users_group, new_repo,

                                                    perm.permission)

                else:

                    _create_default_perms()

            else:

                _create_default_perms()

            if not just_db:

                self.__create_repo(repo_name, form_data['repo_type'],

                                   form_data['repo_group'],

                                   form_data['clone_uri'])

                log_create_repository(new_repo.get_dict(),

                                      created_by=cur_user.username)

            # now automatically start following this repository as owner

            ScmModel(self.sa).toggle_following_repo(new_repo.repo_id,

                                                    cur_user.user_id)

            return new_repo

        except:

            log.error(traceback.format_exc())

            raise

    def create_fork(self, form_data, cur_user):

        """

        Simple wrapper into executing celery task for fork creation

        :param form_data:

        :param cur_user:

        """

        from rhodecode.lib.celerylib import tasks, run_task

        run_task(tasks.create_repo_fork, form_data, cur_user)

    def delete(self, repo):

        repo = self.__get_repo(repo)

        try:

            self.sa.delete(repo)

            self.__delete_repo(repo)

        except:

            log.error(traceback.format_exc())

            raise

    def grant_user_permission(self, repo, user, perm):

        """

        Grant permission for user on given repository, or update existing one

        if found

        :param repo: Instance of Repository, repository_id, or repository name

        :param user: Instance of User, user_id or username

        :param perm: Instance of Permission, or permission_name

        """

        user = self.__get_user(user)

        repo = self.__get_repo(repo)

        permission = self.__get_perm(perm)

        # check if we have that permission already

        obj = self.sa.query(UserRepoToPerm)\

            .filter(UserRepoToPerm.user == user)\

            .filter(UserRepoToPerm.repository == repo)\

            .scalar()

        if obj is None:

            # create new !

            obj = UserRepoToPerm()

        obj.repository = repo

        obj.user = user

        obj.permission = permission

        self.sa.add(obj)

    def revoke_user_permission(self, repo, user):

        """

        Revoke permission for user on given repository

        :param repo: Instance of Repository, repository_id, or repository name

        :param user: Instance of User, user_id or username

        """

        user = self.__get_user(user)

        repo = self.__get_repo(repo)

        obj = self.sa.query(UserRepoToPerm)\

            .filter(UserRepoToPerm.repository == repo)\

            .filter(UserRepoToPerm.user == user)\

            .one()

        self.sa.delete(obj)

    def grant_users_group_permission(self, repo, group_name, perm):

        """

        Grant permission for users group on given repository, or update

        existing one if found

        :param repo: Instance of Repository, repository_id, or repository name

        :param group_name: Instance of UserGroup, users_group_id,

            or users group name

        :param perm: Instance of Permission, or permission_name

        """

        repo = self.__get_repo(repo)

        group_name = self.__get_users_group(group_name)

        permission = self.__get_perm(perm)

        # check if we have that permission already

        obj = self.sa.query(UsersGroupRepoToPerm)\

            .filter(UsersGroupRepoToPerm.users_group == group_name)\

            .filter(UsersGroupRepoToPerm.repository == repo)\

            .scalar()

        if obj is None:

            # create new

            obj = UsersGroupRepoToPerm()

        obj.repository = repo

        obj.users_group = group_name

        obj.permission = permission

        self.sa.add(obj)

    def revoke_users_group_permission(self, repo, group_name):

        """

        Revoke permission for users group on given repository

        :param repo: Instance of Repository, repository_id, or repository name

        :param group_name: Instance of UserGroup, users_group_id,

            or users group name

        """

        repo = self.__get_repo(repo)

        group_name = self.__get_users_group(group_name)

        obj = self.sa.query(UsersGroupRepoToPerm)\

            .filter(UsersGroupRepoToPerm.repository == repo)\

            .filter(UsersGroupRepoToPerm.users_group == group_name)\

            .one()

        self.sa.delete(obj)

    def delete_stats(self, repo_name):

        """

        removes stats for given repo

        :param repo_name:

        """

        try:

            obj = self.sa.query(Statistics)\

                    .filter(Statistics.repository ==

                            self.get_by_repo_name(repo_name))\

                    .one()

            self.sa.delete(obj)

        except:

            log.error(traceback.format_exc())

            raise

    def __create_repo(self, repo_name, alias, new_parent_id, clone_uri=False):

        """

        makes repository on filesystem. It's group aware means it'll create

        a repository within a group, and alter the paths accordingly of

        group location

        :param repo_name:

        :param alias:

        :param parent_id:

        :param clone_uri:

        """

        from rhodecode.lib.utils import is_valid_repo, is_valid_repos_group

        if new_parent_id:

            paths = RepoGroup.get(new_parent_id)\

                .full_path.split(RepoGroup.url_sep())

            new_parent_path = os.sep.join(paths)

        else:

            new_parent_path = ''

        # we need to make it str for mercurial

        repo_path = os.path.join(*map(lambda x: safe_str(x),

                                [self.repos_path, new_parent_path, repo_name]))

        # check if this path is not a repository

        if is_valid_repo(repo_path, self.repos_path):

            raise Exception('This path %s is a valid repository' % repo_path)

        # check if this path is a group

        if is_valid_repos_group(repo_path, self.repos_path):

            raise Exception('This path %s is a valid group' % repo_path)

        log.info('creating repo %s in %s @ %s' % (

                     repo_name, safe_unicode(repo_path), clone_uri

                )

        )

        backend = get_backend(alias)

    def __rename_repo(self, old, new):

        """

        renames repository on filesystem

        :param old: old name

        :param new: new name

        """

        log.info('renaming repo from %s to %s' % (old, new))

        old_path = os.path.join(self.repos_path, old)

        new_path = os.path.join(self.repos_path, new)

        if os.path.isdir(new_path):

            raise Exception(

                'Was trying to rename to already existing dir %s' % new_path

            )

        shutil.move(old_path, new_path)

    def __delete_repo(self, repo):

        """

        removes repo from filesystem, the removal is acctually made by

        added rm__ prefix into dir, and rename internat .hg/.git dirs so this

        repository is no longer valid for rhodecode, can be undeleted later on

        by reverting the renames on this repository

        :param repo: repo object

        """

        rm_path = os.path.join(self.repos_path, repo.repo_name)

        log.info("Removing %s" % (rm_path))

        # disable hg/git

        alias = repo.repo_type

        shutil.move(os.path.join(rm_path, '.%s' % alias),

                    os.path.join(rm_path, 'rm__.%s' % alias))

        # disable repo

        _d = 'rm__%s__%s' % (datetime.now().strftime('%Y%m%d_%H%M%S_%f'),

                             repo.repo_name)

        shutil.move(rm_path, os.path.join(self.repos_path, _d))