view kallithea/model/repo.py @ 4208:ad38f9f93b3b kallithea-2.2.5-rebrand

Correct licensing information in individual files. The top-level license file is now LICENSE.md. Also, in various places where there should have been joint copyright holders listed, a single copyright holder was listed. It does not appear easy to add a link to a large list of copyright holders in these places, so it simply refers to the fact that various authors hold copyright. In future, if an easy method is discovered to link to a list from those places, we should do so. Finally, text is added to LICENSE.md to point to where the full list of copyright holders is, and that Kallithea as a whole is GPLv3'd.
author Bradley M. Kuhn <bkuhn@sfconservancy.org>
date Wed, 21 May 2014 16:59:37 -0400
parents 9daad8c50b37
children 1948ede028ef
line wrap: on
line source

# -*- coding: utf-8 -*-
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
"""
kallithea.model.repo
~~~~~~~~~~~~~~~~~~~~

Repository model for rhodecode

:created_on: Jun 5, 2010
:author: marcink
:copyright: (c) 2013 RhodeCode GmbH.
:license: GPLv3, see LICENSE.md for more details.

"""

from __future__ import with_statement
import os
import shutil
import logging
import traceback
from datetime import datetime
from kallithea.lib.utils import make_ui

from kallithea.lib.vcs.backends import get_backend
from kallithea.lib.compat import json
from kallithea.lib.utils2 import LazyProperty, safe_str, safe_unicode, \
    remove_prefix, obfuscate_url_pw, get_current_authuser
from kallithea.lib.caching_query import FromCache
from kallithea.lib.hooks import log_create_repository, log_delete_repository

from kallithea.model import BaseModel
from kallithea.model.db import Repository, UserRepoToPerm, UserGroupRepoToPerm, \
    UserRepoGroupToPerm, UserGroupRepoGroupToPerm, User, Permission, \
    Statistics, UserGroup, Ui, RepoGroup, \
    Setting, RepositoryField

from kallithea.lib import helpers as h
from kallithea.lib.auth import HasRepoPermissionAny, HasUserGroupPermissionAny
from kallithea.lib.exceptions import AttachedForksError
from kallithea.model.scm import UserGroupList

log = logging.getLogger(__name__)


class RepoModel(BaseModel):

    cls = Repository
    URL_SEPARATOR = Repository.url_sep()

    def _get_user_group(self, users_group):
        return self._get_instance(UserGroup, users_group,
                                  callback=UserGroup.get_by_group_name)

    def _get_repo_group(self, repo_group):
        return self._get_instance(RepoGroup, repo_group,
                                  callback=RepoGroup.get_by_group_name)

    def _create_default_perms(self, repository, private):
        # create default permission
        default = 'repository.read'
        def_user = User.get_default_user()
        for p in def_user.user_perms:
            if p.permission.permission_name.startswith('repository.'):
                default = p.permission.permission_name
                break

        default_perm = 'repository.none' if private else default

        repo_to_perm = UserRepoToPerm()
        repo_to_perm.permission = Permission.get_by_key(default_perm)

        repo_to_perm.repository = repository
        repo_to_perm.user_id = def_user.user_id

        return repo_to_perm

    @LazyProperty
    def repos_path(self):
        """
        Gets the repositories root path from database
        """

        q = self.sa.query(Ui).filter(Ui.ui_key == '/').one()
        return q.ui_value

    def get(self, repo_id, cache=False):
        repo = self.sa.query(Repository) \
            .filter(Repository.repo_id == repo_id)

        if cache:
            repo = repo.options(FromCache("sql_cache_short",
                                          "get_repo_%s" % repo_id))
        return repo.scalar()

    def get_repo(self, repository):
        return self._get_repo(repository)

    def get_by_repo_name(self, repo_name, cache=False):
        repo = self.sa.query(Repository) \
            .filter(Repository.repo_name == repo_name)

        if cache:
            repo = repo.options(FromCache("sql_cache_short",
                                          "get_repo_%s" % repo_name))
        return repo.scalar()

    def get_all_user_repos(self, user):
        """
        Gets all repositories that user have at least read access

        :param user:
        """
        from kallithea.lib.auth import AuthUser
        user = self._get_user(user)
        repos = AuthUser(user_id=user.user_id).permissions['repositories']
        access_check = lambda r: r[1] in ['repository.read',
                                          'repository.write',
                                          'repository.admin']
        repos = [x[0] for x in filter(access_check, repos.items())]
        return Repository.query().filter(Repository.repo_name.in_(repos))

    def get_users_js(self):
        users = self.sa.query(User).filter(User.active == True).all()
        return json.dumps([
            {
                'id': u.user_id,
                'fname': u.name,
                'lname': u.lastname,
                'nname': u.username,
                'gravatar_lnk': h.gravatar_url(u.email, 14)
            } for u in users]
        )

    def get_user_groups_js(self):
        user_groups = self.sa.query(UserGroup) \
            .filter(UserGroup.users_group_active == True).all()
        user_groups = UserGroupList(user_groups, perm_set=['usergroup.read',
                                                           'usergroup.write',
                                                           'usergroup.admin'])
        return json.dumps([
            {
                'id': gr.users_group_id,
                'grname': gr.users_group_name,
                'grmembers': len(gr.members),
            } for gr in user_groups]
        )

    @classmethod
    def _render_datatable(cls, tmpl, *args, **kwargs):
        import kallithea
        from pylons import tmpl_context as c
        from pylons.i18n.translation import _

        _tmpl_lookup = kallithea.CONFIG['pylons.app_globals'].mako_lookup
        template = _tmpl_lookup.get_template('data_table/_dt_elements.html')

        tmpl = template.get_def(tmpl)
        kwargs.update(dict(_=_, h=h, c=c))
        return tmpl.render(*args, **kwargs)

    @classmethod
    def update_repoinfo(cls, repositories=None):
        if not repositories:
            repositories = Repository.getAll()
        for repo in repositories:
            repo.update_changeset_cache()

    def get_repos_as_dict(self, repos_list=None, admin=False, perm_check=True,
                          super_user_actions=False):
        _render = self._render_datatable
        from pylons import tmpl_context as c

        def quick_menu(repo_name):
            return _render('quick_menu', repo_name)

        def repo_lnk(name, rtype, rstate, private, fork_of):
            return _render('repo_name', name, rtype, rstate, private, fork_of,
                           short_name=not admin, admin=False)

        def last_change(last_change):
            return _render("last_change", last_change)

        def rss_lnk(repo_name):
            return _render("rss", repo_name)

        def atom_lnk(repo_name):
            return _render("atom", repo_name)

        def last_rev(repo_name, cs_cache):
            return _render('revision', repo_name, cs_cache.get('revision'),
                           cs_cache.get('raw_id'), cs_cache.get('author'),
                           cs_cache.get('message'))

        def desc(desc):
            if c.visual.stylify_metatags:
                return h.urlify_text(h.desc_stylize(h.truncate(desc, 60)))
            else:
                return h.urlify_text(h.truncate(desc, 60))

        def state(repo_state):
            return _render("repo_state", repo_state)

        def repo_actions(repo_name):
            return _render('repo_actions', repo_name, super_user_actions)

        def owner_actions(user_id, username):
            return _render('user_name', user_id, username)

        repos_data = []
        for repo in repos_list:
            if perm_check:
                # check permission at this level
                if not HasRepoPermissionAny(
                        'repository.read', 'repository.write',
                        'repository.admin'
                )(repo.repo_name, 'get_repos_as_dict check'):
                    continue
            cs_cache = repo.changeset_cache
            row = {
                "menu": quick_menu(repo.repo_name),
                "raw_name": repo.repo_name.lower(),
                "name": repo_lnk(repo.repo_name, repo.repo_type,
                                 repo.repo_state, repo.private, repo.fork),
                "last_change": last_change(repo.last_db_change),
                "last_changeset": last_rev(repo.repo_name, cs_cache),
                "last_rev_raw": cs_cache.get('revision'),
                "desc": desc(repo.description),
                "owner": h.person(repo.user.username),
                "state": state(repo.repo_state),
                "rss": rss_lnk(repo.repo_name),
                "atom": atom_lnk(repo.repo_name),

            }
            if admin:
                row.update({
                    "action": repo_actions(repo.repo_name),
                    "owner": owner_actions(repo.user.user_id,
                                           h.person(repo.user.username))
                })
            repos_data.append(row)

        return {
            "totalRecords": len(repos_list),
            "startIndex": 0,
            "sort": "name",
            "dir": "asc",
            "records": repos_data
        }

    def _get_defaults(self, repo_name):
        """
        Gets information about repository, and returns a dict for
        usage in forms

        :param repo_name:
        """

        repo_info = Repository.get_by_repo_name(repo_name)

        if repo_info is None:
            return None

        defaults = repo_info.get_dict()
        group, repo_name, repo_name_full = repo_info.groups_and_repo
        defaults['repo_name'] = repo_name
        defaults['repo_group'] = getattr(group[-1] if group else None,
                                         'group_id', None)

        for strip, k in [(0, 'repo_type'), (1, 'repo_enable_downloads'),
                         (1, 'repo_description'), (1, 'repo_enable_locking'),
                         (1, 'repo_landing_rev'), (0, 'clone_uri'),
                         (1, 'repo_private'), (1, 'repo_enable_statistics')]:
            attr = k
            if strip:
                attr = remove_prefix(k, 'repo_')

            val = defaults[attr]
            if k == 'repo_landing_rev':
                val = ':'.join(defaults[attr])
            defaults[k] = val
            if k == 'clone_uri':
                defaults['clone_uri_hidden'] = repo_info.clone_uri_hidden

        # fill owner
        if repo_info.user:
            defaults.update({'user': repo_info.user.username})
        else:
            replacement_user = User.query().filter(User.admin ==
                                                   True).first().username
            defaults.update({'user': replacement_user})

        # fill repository users
        for p in repo_info.repo_to_perm:
            defaults.update({'u_perm_%s' % p.user.username:
                                 p.permission.permission_name})

        # fill repository groups
        for p in repo_info.users_group_to_perm:
            defaults.update({'g_perm_%s' % p.users_group.users_group_name:
                                 p.permission.permission_name})

        return defaults

    def update(self, repo, **kwargs):
        try:
            cur_repo = self._get_repo(repo)
            org_repo_name = cur_repo.repo_name
            if 'user' in kwargs:
                cur_repo.user = User.get_by_username(kwargs['user'])

            if 'repo_group' in kwargs:
                cur_repo.group = RepoGroup.get(kwargs['repo_group'])
            log.debug('Updating repo %s with params:%s' % (cur_repo, kwargs))
            for strip, k in [(1, 'repo_enable_downloads'),
                             (1, 'repo_description'),
                             (1, 'repo_enable_locking'),
                             (1, 'repo_landing_rev'),
                             (1, 'repo_private'),
                             (1, 'repo_enable_statistics'),
                             (0, 'clone_uri'),]:
                if k in kwargs:
                    val = kwargs[k]
                    if strip:
                        k = remove_prefix(k, 'repo_')
                    if k == 'clone_uri':
                        from kallithea.model.validators import Missing
                        _change = kwargs.get('clone_uri_change')
                        if _change == Missing:
                            # we don't change the value, so use original one
                            val = cur_repo.clone_uri

                    setattr(cur_repo, k, val)

            new_name = cur_repo.get_new_name(kwargs['repo_name'])
            cur_repo.repo_name = new_name
            #if private flag is set, reset default permission to NONE

            if kwargs.get('repo_private'):
                EMPTY_PERM = 'repository.none'
                RepoModel().grant_user_permission(
                    repo=cur_repo, user='default', perm=EMPTY_PERM
                )
                #handle extra fields
            for field in filter(lambda k: k.startswith(RepositoryField.PREFIX),
                                kwargs):
                k = RepositoryField.un_prefix_key(field)
                ex_field = RepositoryField.get_by_key_name(key=k, repo=cur_repo)
                if ex_field:
                    ex_field.field_value = kwargs[field]
                    self.sa.add(ex_field)
            self.sa.add(cur_repo)

            if org_repo_name != new_name:
                # rename repository
                self._rename_filesystem_repo(old=org_repo_name, new=new_name)

            return cur_repo
        except Exception:
            log.error(traceback.format_exc())
            raise

    def _create_repo(self, repo_name, repo_type, description, owner,
                     private=False, clone_uri=None, repo_group=None,
                     landing_rev='rev:tip', fork_of=None,
                     copy_fork_permissions=False, enable_statistics=False,
                     enable_locking=False, enable_downloads=False,
                     copy_group_permissions=False, state=Repository.STATE_PENDING):
        """
        Create repository inside database with PENDING state, this should be
        only executed by create() repo. With exception of importing existing repos

        """
        from kallithea.model.scm import ScmModel

        owner = self._get_user(owner)
        fork_of = self._get_repo(fork_of)
        repo_group = self._get_repo_group(repo_group)
        try:
            repo_name = safe_unicode(repo_name)
            description = safe_unicode(description)
            # repo name is just a name of repository
            # while repo_name_full is a full qualified name that is combined
            # with name and path of group
            repo_name_full = repo_name
            repo_name = repo_name.split(self.URL_SEPARATOR)[-1]

            new_repo = Repository()
            new_repo.repo_state = state
            new_repo.enable_statistics = False
            new_repo.repo_name = repo_name_full
            new_repo.repo_type = repo_type
            new_repo.user = owner
            new_repo.group = repo_group
            new_repo.description = description or repo_name
            new_repo.private = private
            new_repo.clone_uri = clone_uri
            new_repo.landing_rev = landing_rev

            new_repo.enable_statistics = enable_statistics
            new_repo.enable_locking = enable_locking
            new_repo.enable_downloads = enable_downloads

            if repo_group:
                new_repo.enable_locking = repo_group.enable_locking

            if fork_of:
                parent_repo = fork_of
                new_repo.fork = parent_repo

            self.sa.add(new_repo)

            if fork_of and copy_fork_permissions:
                repo = fork_of
                user_perms = UserRepoToPerm.query() \
                    .filter(UserRepoToPerm.repository == repo).all()
                group_perms = UserGroupRepoToPerm.query() \
                    .filter(UserGroupRepoToPerm.repository == repo).all()

                for perm in user_perms:
                    UserRepoToPerm.create(perm.user, new_repo, perm.permission)

                for perm in group_perms:
                    UserGroupRepoToPerm.create(perm.users_group, new_repo,
                                               perm.permission)

            elif repo_group and copy_group_permissions:

                user_perms = UserRepoGroupToPerm.query() \
                    .filter(UserRepoGroupToPerm.group == repo_group).all()

                group_perms = UserGroupRepoGroupToPerm.query() \
                    .filter(UserGroupRepoGroupToPerm.group == repo_group).all()

                for perm in user_perms:
                    perm_name = perm.permission.permission_name.replace('group.', 'repository.')
                    perm_obj = Permission.get_by_key(perm_name)
                    UserRepoToPerm.create(perm.user, new_repo, perm_obj)

                for perm in group_perms:
                    perm_name = perm.permission.permission_name.replace('group.', 'repository.')
                    perm_obj = Permission.get_by_key(perm_name)
                    UserGroupRepoToPerm.create(perm.users_group, new_repo, perm_obj)

            else:
                perm_obj = self._create_default_perms(new_repo, private)
                self.sa.add(perm_obj)

            # now automatically start following this repository as owner
            ScmModel(self.sa).toggle_following_repo(new_repo.repo_id,
                                                    owner.user_id)
            # we need to flush here, in order to check if database won't
            # throw any exceptions, create filesystem dirs at the very end
            self.sa.flush()
            return new_repo
        except Exception:
            log.error(traceback.format_exc())
            raise

    def create(self, form_data, cur_user):
        """
        Create repository using celery tasks

        :param form_data:
        :param cur_user:
        """
        from kallithea.lib.celerylib import tasks, run_task
        return run_task(tasks.create_repo, form_data, cur_user)

    def _update_permissions(self, repo, perms_new=None, perms_updates=None,
                            check_perms=True):
        if not perms_new:
            perms_new = []
        if not perms_updates:
            perms_updates = []

        # update permissions
        for member, perm, member_type in perms_updates:
            if member_type == 'user':
                # this updates existing one
                self.grant_user_permission(
                    repo=repo, user=member, perm=perm
                )
            else:
                #check if we have permissions to alter this usergroup
                req_perms = (
                    'usergroup.read', 'usergroup.write', 'usergroup.admin')
                if not check_perms or HasUserGroupPermissionAny(*req_perms)(
                        member):
                    self.grant_user_group_permission(
                        repo=repo, group_name=member, perm=perm
                    )
            # set new permissions
        for member, perm, member_type in perms_new:
            if member_type == 'user':
                self.grant_user_permission(
                    repo=repo, user=member, perm=perm
                )
            else:
                #check if we have permissions to alter this usergroup
                req_perms = (
                    'usergroup.read', 'usergroup.write', 'usergroup.admin')
                if not check_perms or HasUserGroupPermissionAny(*req_perms)(
                        member):
                    self.grant_user_group_permission(
                        repo=repo, group_name=member, perm=perm
                    )

    def create_fork(self, form_data, cur_user):
        """
        Simple wrapper into executing celery task for fork creation

        :param form_data:
        :param cur_user:
        """
        from kallithea.lib.celerylib import tasks, run_task
        return run_task(tasks.create_repo_fork, form_data, cur_user)

    def delete(self, repo, forks=None, fs_remove=True, cur_user=None):
        """
        Delete given repository, forks parameter defines what do do with
        attached forks. Throws AttachedForksError if deleted repo has attached
        forks

        :param repo:
        :param forks: str 'delete' or 'detach'
        :param fs_remove: remove(archive) repo from filesystem
        """
        if not cur_user:
            cur_user = getattr(get_current_authuser(), 'username', None)
        repo = self._get_repo(repo)
        if repo:
            if forks == 'detach':
                for r in repo.forks:
                    r.fork = None
                    self.sa.add(r)
            elif forks == 'delete':
                for r in repo.forks:
                    self.delete(r, forks='delete')
            elif [f for f in repo.forks]:
                raise AttachedForksError()

            old_repo_dict = repo.get_dict()
            owner = repo.user
            try:
                self.sa.delete(repo)
                if fs_remove:
                    self._delete_filesystem_repo(repo)
                else:
                    log.debug('skipping removal from filesystem')
                log_delete_repository(old_repo_dict,
                                      deleted_by=cur_user)
            except Exception:
                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)
        log.debug('Granted perm %s to %s on %s' % (perm, user, repo))
        return 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) \
            .scalar()
        if obj:
            self.sa.delete(obj)
            log.debug('Revoked perm on %s on %s' % (repo, user))

    def grant_user_group_permission(self, repo, group_name, perm):
        """
        Grant permission for user 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 user group name
        :param perm: Instance of Permission, or permission_name
        """
        repo = self._get_repo(repo)
        group_name = self._get_user_group(group_name)
        permission = self._get_perm(perm)

        # check if we have that permission already
        obj = self.sa.query(UserGroupRepoToPerm) \
            .filter(UserGroupRepoToPerm.users_group == group_name) \
            .filter(UserGroupRepoToPerm.repository == repo) \
            .scalar()

        if obj is None:
            # create new
            obj = UserGroupRepoToPerm()

        obj.repository = repo
        obj.users_group = group_name
        obj.permission = permission
        self.sa.add(obj)
        log.debug('Granted perm %s to %s on %s' % (perm, group_name, repo))
        return obj

    def revoke_user_group_permission(self, repo, group_name):
        """
        Revoke permission for user group on given repository

        :param repo: Instance of Repository, repository_id, or repository name
        :param group_name: Instance of UserGroup, users_group_id,
            or user group name
        """
        repo = self._get_repo(repo)
        group_name = self._get_user_group(group_name)

        obj = self.sa.query(UserGroupRepoToPerm) \
            .filter(UserGroupRepoToPerm.repository == repo) \
            .filter(UserGroupRepoToPerm.users_group == group_name) \
            .scalar()
        if obj:
            self.sa.delete(obj)
            log.debug('Revoked perm to %s on %s' % (repo, group_name))

    def delete_stats(self, repo_name):
        """
        removes stats for given repo

        :param repo_name:
        """
        repo = self._get_repo(repo_name)
        try:
            obj = self.sa.query(Statistics) \
                .filter(Statistics.repository == repo).scalar()
            if obj:
                self.sa.delete(obj)
        except Exception:
            log.error(traceback.format_exc())
            raise

    def _create_filesystem_repo(self, repo_name, repo_type, repo_group,
                                clone_uri=None, repo_store_location=None):
        """
        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:
        :param clone_uri:
        :param repo_store_location:
        """
        from kallithea.lib.utils import is_valid_repo, is_valid_repo_group
        from kallithea.model.scm import ScmModel

        if '/' in repo_name:
            raise ValueError('repo_name must not contain groups got `%s`' % repo_name)

        if isinstance(repo_group, RepoGroup):
            new_parent_path = os.sep.join(repo_group.full_path_splitted)
        else:
            new_parent_path = repo_group or ''

        if repo_store_location:
            _paths = [repo_store_location]
        else:
            _paths = [self.repos_path, new_parent_path, repo_name]
            # we need to make it str for mercurial
        repo_path = os.path.join(*map(lambda x: safe_str(x), _paths))

        # 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_repo_group(repo_path, self.repos_path):
            raise Exception('This path %s is a valid group' % repo_path)

        log.info('creating repo %s in %s from url: `%s`' % (
            repo_name, safe_unicode(repo_path),
            obfuscate_url_pw(clone_uri)))

        backend = get_backend(repo_type)

        if repo_type == 'hg':
            baseui = make_ui('db', clear_session=False)
            # patch and reset hooks section of UI config to not run any
            # hooks on creating remote repo
            for k, v in baseui.configitems('hooks'):
                baseui.setconfig('hooks', k, None)

            repo = backend(repo_path, create=True, src_url=clone_uri, baseui=baseui)
        elif repo_type == 'git':
            repo = backend(repo_path, create=True, src_url=clone_uri, bare=True)
            # add rhodecode hook into this repo
            ScmModel().install_git_hook(repo=repo)
        else:
            raise Exception('Not supported repo_type %s expected hg/git' % repo_type)

        log.debug('Created repo %s with %s backend'
                  % (safe_unicode(repo_name), safe_unicode(repo_type)))
        return repo

    def _rename_filesystem_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_filesystem_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 repository %s" % (rm_path,))
        # disable hg/git internal that it doesn't get detected as repo
        alias = repo.repo_type

        bare = getattr(repo.scm_instance, 'bare', False)

        # skip this for bare git repos
        if not bare:
            # disable VCS repo
            vcs_path = os.path.join(rm_path, '.%s' % alias)
            if os.path.exists(vcs_path):
                shutil.move(vcs_path, os.path.join(rm_path, 'rm__.%s' % alias))

        _now = datetime.now()
        _ms = str(_now.microsecond).rjust(6, '0')
        _d = 'rm__%s__%s' % (_now.strftime('%Y%m%d_%H%M%S_' + _ms),
                             repo.just_name)
        if repo.group:
            args = repo.group.full_path_splitted + [_d]
            _d = os.path.join(*args)

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