Created install_git_hook more verbose version of previos code.

- allows autoupdating hooks in later releases

rhodecode/model/repo.py

@@ -1,539 +1,526 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.model.repo
     ~~~~~~~~~~~~~~~~~~~~
 
     Repository model for rhodecode
 
     :created_on: Jun 5, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # 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/>.
 from __future__ import with_statement
 import os
 import shutil
 import logging
 import traceback
-import pkg_resources
-from os.path import dirname as dn, join as jn
 from datetime import datetime
 
 from rhodecode.lib.vcs.backends import get_backend
 from rhodecode.lib.compat import json
 from rhodecode.lib.utils2 import LazyProperty, safe_str, safe_unicode
 from rhodecode.lib.caching_query import FromCache
 from rhodecode.lib.hooks import log_create_repository
 
 from rhodecode.model import BaseModel
 from rhodecode.model.db import Repository, UserRepoToPerm, User, Permission, \
     Statistics, UsersGroup, UsersGroupRepoToPerm, RhodeCodeUi, RepoGroup
 from rhodecode.lib import helpers as h
 
 
 log = logging.getLogger(__name__)
 
 
 class RepoModel(BaseModel):
 
     cls = Repository
     URL_SEPARATOR = Repository.url_sep()
 
     def __get_users_group(self, users_group):
         return self._get_instance(UsersGroup, users_group,
                                   callback=UsersGroup.get_by_group_name)
 
     def __get_repos_group(self, repos_group):
         return self._get_instance(RepoGroup, repos_group,
                                   callback=RepoGroup.get_by_group_name)
 
     @LazyProperty
     def repos_path(self):
         """
         Get's the repositories root path from database
         """
 
         q = self.sa.query(RhodeCodeUi).filter(RhodeCodeUi.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_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_users_groups_js(self):
         users_groups = self.sa.query(UsersGroup)\
             .filter(UsersGroup.users_group_active == True).all()
 
         return json.dumps([
             {
              'id': gr.users_group_id,
              'grname': gr.users_group_name,
              'grmembers': len(gr.members),
             } for gr in users_groups]
         )
 
     def _get_defaults(self, repo_name):
         """
         Get's 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_info.groups_and_repo
         defaults['repo_name'] = repo_name
         defaults['repo_group'] = getattr(group[-1] if group else None,
                                          'group_id', None)
 
         # 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_name, form_data):
         try:
             cur_repo = self.get_by_repo_name(repo_name, cache=False)
 
             # update permissions
             for member, perm, member_type in form_data['perms_updates']:
                 if member_type == 'user':
                     # this updates existing one
                     RepoModel().grant_user_permission(
                         repo=cur_repo, user=member, perm=perm
                     )
                 else:
                     RepoModel().grant_users_group_permission(
                         repo=cur_repo, group_name=member, perm=perm
                     )
             # set new permissions
             for member, perm, member_type in form_data['perms_new']:
                 if member_type == 'user':
                     RepoModel().grant_user_permission(
                         repo=cur_repo, user=member, perm=perm
                     )
                 else:
                     RepoModel().grant_users_group_permission(
                         repo=cur_repo, group_name=member, perm=perm
                     )
 
             # update current repo
             for k, v in form_data.items():
                 if k == 'user':
                     cur_repo.user = User.get_by_username(v)
                 elif k == 'repo_name':
                     pass
                 elif k == 'repo_group':
                     cur_repo.group = RepoGroup.get(v)
 
                 else:
                     setattr(cur_repo, k, v)
 
             new_name = cur_repo.get_new_name(form_data['repo_name'])
             cur_repo.repo_name = new_name
 
             self.sa.add(cur_repo)
 
             if repo_name != new_name:
                 # rename repository
                 self.__rename_repo(old=repo_name, new=new_name)
 
             return cur_repo
         except:
             log.error(traceback.format_exc())
             raise
 
     def create_repo(self, repo_name, repo_type, description, owner,
                     private=False, clone_uri=None, repos_group=None,
                     landing_rev='tip', just_db=False, fork_of=None,
                     copy_fork_permissions=False):
         from rhodecode.model.scm import ScmModel
 
         owner = self._get_user(owner)
         fork_of = self._get_repo(fork_of)
         repos_group = self.__get_repos_group(repos_group)
         try:
 
             # 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.enable_statistics = False
             new_repo.repo_name = repo_name_full
             new_repo.repo_type = repo_type
             new_repo.user = owner
             new_repo.group = repos_group
             new_repo.description = description or repo_name
             new_repo.private = private
             new_repo.clone_uri = clone_uri
             new_repo.landing_rev = landing_rev
 
             if fork_of:
                 parent_repo = fork_of
                 new_repo.fork = parent_repo
 
             self.sa.add(new_repo)
 
             def _create_default_perms():
                 # create default permission
                 repo_to_perm = UserRepoToPerm()
                 default = 'repository.read'
                 for p in User.get_by_username('default').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.permission_id = self.sa.query(Permission)\
                         .filter(Permission.permission_name == default_perm)\
                         .one().permission_id
 
                 repo_to_perm.repository = new_repo
                 repo_to_perm.user_id = User.get_by_username('default').user_id
 
                 self.sa.add(repo_to_perm)
 
             if fork_of:
                 if copy_fork_permissions:
                     repo = fork_of
                     user_perms = UserRepoToPerm.query()\
                         .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, repo_type,
                                    repos_group,
                                    clone_uri)
                 log_create_repository(new_repo.get_dict(),
                                       created_by=owner.username)
-
+            else:
+                # install the githook if it's a git repo
+                if repo_type == 'git':
+                    ScmModel().install_git_hook(repo=new_repo.scm_instance)
             # now automatically start following this repository as owner
             ScmModel(self.sa).toggle_following_repo(new_repo.repo_id,
                                                     owner.user_id)
             return new_repo
         except:
-            print traceback.format_exc()
             log.error(traceback.format_exc())
             raise
 
     def create(self, form_data, cur_user, just_db=False, fork=None):
 
         repo_name = form_data['repo_name_full']
         repo_type = form_data['repo_type']
         description = form_data['description']
         owner = cur_user
         private = form_data['private']
         clone_uri = form_data.get('clone_uri')
         repos_group = form_data['repo_group']
         landing_rev = form_data['landing_rev']
         copy_fork_permissions = form_data.get('copy_permissions')
         fork_of = form_data.get('fork_parent_id')
         return self.create_repo(
             repo_name, repo_type, description, owner, private, clone_uri,
             repos_group, landing_rev, just_db, fork_of, copy_fork_permissions
         )
 
     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)
         if 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, parent, 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
+        from rhodecode.model.scm import ScmModel
 
         if parent:
             new_parent_path = os.sep.join(parent.full_path_splitted)
         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)
         if alias == 'hg':
             backend(repo_path, create=True, src_url=clone_uri)
         elif alias == 'git':
             r = backend(repo_path, create=True, src_url=clone_uri, bare=True)
             # add rhodecode hook into this repo
-
-            loc = jn(r.path, 'hooks')
-            if not r.bare:
-                loc = jn(r.path, '.git', 'hooks')
-            if not os.path.isdir(loc):
-                os.makedirs(loc)
-
-            tmpl = pkg_resources.resource_string(
-                'rhodecode', jn('config', 'post_receive_tmpl.py')
-            )
-            _hook_file = jn(loc, 'post-receive')
-            with open(_hook_file, 'wb') as f:
-                f.write(tmpl)
-            os.chmod(_hook_file, 0755)
-
+            ScmModel().install_git_hook(repo=r)
         else:
             raise Exception('Undefined alias %s' % 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 internal that it doesn't get detected as repo
         alias = repo.repo_type
 
         bare = getattr(repo.scm_instance, 'bare', False)
 
         if not bare:
             # skip this for bare git repos
             shutil.move(os.path.join(rm_path, '.%s' % alias),
                         os.path.join(rm_path, 'rm__.%s' % alias))
         # disable repo
         _now = datetime.now()
         _ms = str(_now.microsecond).rjust(6, '0')
         _d = 'rm__%s__%s' % (_now.strftime('%Y%m%d_%H%M%S_' + _ms),
                              repo.repo_name)
         shutil.move(rm_path, os.path.join(self.repos_path, _d))

rhodecode/model/scm.py

@@ -1,547 +1,597 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.model.scm
     ~~~~~~~~~~~~~~~~~~~
 
     Scm model for RhodeCode
 
     :created_on: Apr 9, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # 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/>.
 import os
+import re
 import time
 import traceback
 import logging
 import cStringIO
+import pkg_resources
+from os.path import dirname as dn, join as jn
 
 from sqlalchemy import func
 from pylons.i18n.translation import _
 
+import rhodecode
 from rhodecode.lib.vcs import get_backend
 from rhodecode.lib.vcs.exceptions import RepositoryError
 from rhodecode.lib.vcs.utils.lazy import LazyProperty
 from rhodecode.lib.vcs.nodes import FileNode
 
 from rhodecode import BACKENDS
 from rhodecode.lib import helpers as h
 from rhodecode.lib.utils2 import safe_str, safe_unicode
 from rhodecode.lib.auth import HasRepoPermissionAny, HasReposGroupPermissionAny
 from rhodecode.lib.utils import get_repos as get_filesystem_repos, make_ui, \
     action_logger, EmptyChangeset, REMOVED_REPO_PAT
 from rhodecode.model import BaseModel
 from rhodecode.model.db import Repository, RhodeCodeUi, CacheInvalidation, \
     UserFollowing, UserLog, User, RepoGroup, PullRequest
 
 log = logging.getLogger(__name__)
 
 
 class UserTemp(object):
     def __init__(self, user_id):
         self.user_id = user_id
 
     def __repr__(self):
         return "<%s('id:%s')>" % (self.__class__.__name__, self.user_id)
 
 
 class RepoTemp(object):
     def __init__(self, repo_id):
         self.repo_id = repo_id
 
     def __repr__(self):
         return "<%s('id:%s')>" % (self.__class__.__name__, self.repo_id)
 
 
 class CachedRepoList(object):
     """
     Cached repo list, uses in-memory cache after initialization, that is
     super fast
     """
 
     def __init__(self, db_repo_list, repos_path, order_by=None):
         self.db_repo_list = db_repo_list
         self.repos_path = repos_path
         self.order_by = order_by
         self.reversed = (order_by or '').startswith('-')
 
     def __len__(self):
         return len(self.db_repo_list)
 
     def __repr__(self):
         return '<%s (%s)>' % (self.__class__.__name__, self.__len__())
 
     def __iter__(self):
         # pre-propagated cache_map to save executing select statements
         # for each repo
         cache_map = CacheInvalidation.get_cache_map()
 
         for dbr in self.db_repo_list:
             scmr = dbr.scm_instance_cached(cache_map)
             # check permission at this level
             if not HasRepoPermissionAny(
                 'repository.read', 'repository.write', 'repository.admin'
             )(dbr.repo_name, 'get repo check'):
                 continue
 
             if scmr is None:
                 log.error(
                     '%s this repository is present in database but it '
                     'cannot be created as an scm instance' % dbr.repo_name
                 )
                 continue
 
             last_change = scmr.last_change
             tip = h.get_changeset_safe(scmr, 'tip')
 
             tmp_d = {}
             tmp_d['name'] = dbr.repo_name
             tmp_d['name_sort'] = tmp_d['name'].lower()
             tmp_d['description'] = dbr.description
             tmp_d['description_sort'] = tmp_d['description'].lower()
             tmp_d['last_change'] = last_change
             tmp_d['last_change_sort'] = time.mktime(last_change.timetuple())
             tmp_d['tip'] = tip.raw_id
             tmp_d['tip_sort'] = tip.revision
             tmp_d['rev'] = tip.revision
             tmp_d['contact'] = dbr.user.full_contact
             tmp_d['contact_sort'] = tmp_d['contact']
             tmp_d['owner_sort'] = tmp_d['contact']
             tmp_d['repo_archives'] = list(scmr._get_archives())
             tmp_d['last_msg'] = tip.message
             tmp_d['author'] = tip.author
             tmp_d['dbrepo'] = dbr.get_dict()
             tmp_d['dbrepo_fork'] = dbr.fork.get_dict() if dbr.fork else {}
             yield tmp_d
 
 
 class SimpleCachedRepoList(CachedRepoList):
     """
     Lighter version of CachedRepoList without the scm initialisation
     """
 
     def __iter__(self):
         for dbr in self.db_repo_list:
             # check permission at this level
             if not HasRepoPermissionAny(
                 'repository.read', 'repository.write', 'repository.admin'
             )(dbr.repo_name, 'get repo check'):
                 continue
 
             tmp_d = {}
             tmp_d['name'] = dbr.repo_name
             tmp_d['name_sort'] = tmp_d['name'].lower()
             tmp_d['description'] = dbr.description
             tmp_d['description_sort'] = tmp_d['description'].lower()
             tmp_d['dbrepo'] = dbr.get_dict()
             tmp_d['dbrepo_fork'] = dbr.fork.get_dict() if dbr.fork else {}
             yield tmp_d
 
 
 class GroupList(object):
 
     def __init__(self, db_repo_group_list):
         self.db_repo_group_list = db_repo_group_list
 
     def __len__(self):
         return len(self.db_repo_group_list)
 
     def __repr__(self):
         return '<%s (%s)>' % (self.__class__.__name__, self.__len__())
 
     def __iter__(self):
         for dbgr in self.db_repo_group_list:
             # check permission at this level
             if not HasReposGroupPermissionAny(
                 'group.read', 'group.write', 'group.admin'
             )(dbgr.group_name, 'get group repo check'):
                 continue
 
             yield dbgr
 
 
 class ScmModel(BaseModel):
     """
     Generic Scm Model
     """
 
     def __get_repo(self, instance):
         cls = Repository
         if isinstance(instance, cls):
             return instance
         elif isinstance(instance, int) or str(instance).isdigit():
             return cls.get(instance)
         elif isinstance(instance, basestring):
             return cls.get_by_repo_name(instance)
         elif instance:
             raise Exception('given object must be int, basestr or Instance'
                             ' of %s got %s' % (type(cls), type(instance)))
 
     @LazyProperty
     def repos_path(self):
         """
         Get's the repositories root path from database
         """
 
         q = self.sa.query(RhodeCodeUi).filter(RhodeCodeUi.ui_key == '/').one()
 
         return q.ui_value
 
     def repo_scan(self, repos_path=None):
         """
         Listing of repositories in given path. This path should not be a
         repository itself. Return a dictionary of repository objects
 
         :param repos_path: path to directory containing repositories
         """
 
         if repos_path is None:
             repos_path = self.repos_path
 
         log.info('scanning for repositories in %s' % repos_path)
 
         baseui = make_ui('db')
         repos = {}
 
         for name, path in get_filesystem_repos(repos_path, recursive=True):
             # skip removed repos
             if REMOVED_REPO_PAT.match(name):
                 continue
 
             # name need to be decomposed and put back together using the /
             # since this is internal storage separator for rhodecode
             name = Repository.url_sep().join(name.split(os.sep))
 
             try:
                 if name in repos:
                     raise RepositoryError('Duplicate repository name %s '
                                           'found in %s' % (name, path))
                 else:
 
                     klass = get_backend(path[0])
 
                     if path[0] == 'hg' and path[0] in BACKENDS.keys():
                         repos[name] = klass(safe_str(path[1]), baseui=baseui)
 
                     if path[0] == 'git' and path[0] in BACKENDS.keys():
                         repos[name] = klass(path[1])
             except OSError:
                 continue
 
         return repos
 
     def get_repos(self, all_repos=None, sort_key=None, simple=False):
         """
         Get all repos from db and for each repo create it's
         backend instance and fill that backed with information from database
 
         :param all_repos: list of repository names as strings
             give specific repositories list, good for filtering
 
         :param sort_key: initial sorting of repos
         :param simple: use SimpleCachedList - one without the SCM info
         """
         if all_repos is None:
             all_repos = self.sa.query(Repository)\
                         .filter(Repository.group_id == None)\
                         .order_by(func.lower(Repository.repo_name)).all()
         if simple:
             repo_iter = SimpleCachedRepoList(all_repos,
                                              repos_path=self.repos_path,
                                              order_by=sort_key)
         else:
             repo_iter = CachedRepoList(all_repos,
                                        repos_path=self.repos_path,
                                        order_by=sort_key)
 
         return repo_iter
 
     def get_repos_groups(self, all_groups=None):
         if all_groups is None:
             all_groups = RepoGroup.query()\
                 .filter(RepoGroup.group_parent_id == None).all()
         group_iter = GroupList(all_groups)
 
         return group_iter
 
     def mark_for_invalidation(self, repo_name):
         """
         Puts cache invalidation task into db for
         further global cache invalidation
 
         :param repo_name: this repo that should invalidation take place
         """
         CacheInvalidation.set_invalidate(repo_name)
 
     def toggle_following_repo(self, follow_repo_id, user_id):
 
         f = self.sa.query(UserFollowing)\
             .filter(UserFollowing.follows_repo_id == follow_repo_id)\
             .filter(UserFollowing.user_id == user_id).scalar()
 
         if f is not None:
             try:
                 self.sa.delete(f)
                 action_logger(UserTemp(user_id),
                               'stopped_following_repo',
                               RepoTemp(follow_repo_id))
                 return
             except:
                 log.error(traceback.format_exc())
                 raise
 
         try:
             f = UserFollowing()
             f.user_id = user_id
             f.follows_repo_id = follow_repo_id
             self.sa.add(f)
 
             action_logger(UserTemp(user_id),
                           'started_following_repo',
                           RepoTemp(follow_repo_id))
         except:
             log.error(traceback.format_exc())
             raise
 
     def toggle_following_user(self, follow_user_id, user_id):
         f = self.sa.query(UserFollowing)\
             .filter(UserFollowing.follows_user_id == follow_user_id)\
             .filter(UserFollowing.user_id == user_id).scalar()
 
         if f is not None:
             try:
                 self.sa.delete(f)
                 return
             except:
                 log.error(traceback.format_exc())
                 raise
 
         try:
             f = UserFollowing()
             f.user_id = user_id
             f.follows_user_id = follow_user_id
             self.sa.add(f)
         except:
             log.error(traceback.format_exc())
             raise
 
     def is_following_repo(self, repo_name, user_id, cache=False):
         r = self.sa.query(Repository)\
             .filter(Repository.repo_name == repo_name).scalar()
 
         f = self.sa.query(UserFollowing)\
             .filter(UserFollowing.follows_repository == r)\
             .filter(UserFollowing.user_id == user_id).scalar()
 
         return f is not None
 
     def is_following_user(self, username, user_id, cache=False):
         u = User.get_by_username(username)
 
         f = self.sa.query(UserFollowing)\
             .filter(UserFollowing.follows_user == u)\
             .filter(UserFollowing.user_id == user_id).scalar()
 
         return f is not None
 
     def get_followers(self, repo):
         repo = self._get_repo(repo)
 
         return self.sa.query(UserFollowing)\
                 .filter(UserFollowing.follows_repository == repo).count()
 
     def get_forks(self, repo):
         repo = self._get_repo(repo)
         return self.sa.query(Repository)\
                 .filter(Repository.fork == repo).count()
 
     def get_pull_requests(self, repo):
         repo = self._get_repo(repo)
         return self.sa.query(PullRequest)\
                 .filter(PullRequest.other_repo == repo).count()
 
     def mark_as_fork(self, repo, fork, user):
         repo = self.__get_repo(repo)
         fork = self.__get_repo(fork)
         repo.fork = fork
         self.sa.add(repo)
         return repo
 
     def pull_changes(self, repo, username):
         dbrepo = self.__get_repo(repo)
         clone_uri = dbrepo.clone_uri
         if not clone_uri:
             raise Exception("This repository doesn't have a clone uri")
 
         repo = dbrepo.scm_instance
         try:
             extras = {
                 'ip': '',
                 'username': username,
                 'action': 'push_remote',
                 'repository': dbrepo.repo_name,
                 'scm': repo.alias,
             }
             Repository.inject_ui(repo, extras=extras)
 
             if repo.alias == 'git':
                 repo.fetch(clone_uri)
             else:
                 repo.pull(clone_uri)
             self.mark_for_invalidation(dbrepo.repo_name)
         except:
             log.error(traceback.format_exc())
             raise
 
     def commit_change(self, repo, repo_name, cs, user, author, message,
                       content, f_path):
 
         if repo.alias == 'hg':
             from rhodecode.lib.vcs.backends.hg import \
                 MercurialInMemoryChangeset as IMC
         elif repo.alias == 'git':
             from rhodecode.lib.vcs.backends.git import \
                 GitInMemoryChangeset as IMC
 
         # decoding here will force that we have proper encoded values
         # in any other case this will throw exceptions and deny commit
         content = safe_str(content)
         path = safe_str(f_path)
         # message and author needs to be unicode
         # proper backend should then translate that into required type
         message = safe_unicode(message)
         author = safe_unicode(author)
         m = IMC(repo)
         m.change(FileNode(path, content))
         tip = m.commit(message=message,
                        author=author,
                        parents=[cs], branch=cs.branch)
 
         new_cs = tip.short_id
         action = 'push_local:%s' % new_cs
 
         action_logger(user, action, repo_name)
 
         self.mark_for_invalidation(repo_name)
 
     def create_node(self, repo, repo_name, cs, user, author, message, content,
                       f_path):
         if repo.alias == 'hg':
             from rhodecode.lib.vcs.backends.hg import MercurialInMemoryChangeset as IMC
         elif repo.alias == 'git':
             from rhodecode.lib.vcs.backends.git import GitInMemoryChangeset as IMC
         # decoding here will force that we have proper encoded values
         # in any other case this will throw exceptions and deny commit
 
         if isinstance(content, (basestring,)):
             content = safe_str(content)
         elif isinstance(content, (file, cStringIO.OutputType,)):
             content = content.read()
         else:
             raise Exception('Content is of unrecognized type %s' % (
                 type(content)
             ))
 
         message = safe_unicode(message)
         author = safe_unicode(author)
         path = safe_str(f_path)
         m = IMC(repo)
 
         if isinstance(cs, EmptyChangeset):
             # EmptyChangeset means we we're editing empty repository
             parents = None
         else:
             parents = [cs]
 
         m.add(FileNode(path, content=content))
         tip = m.commit(message=message,
                        author=author,
                        parents=parents, branch=cs.branch)
         new_cs = tip.short_id
         action = 'push_local:%s' % new_cs
 
         action_logger(user, action, repo_name)
 
         self.mark_for_invalidation(repo_name)
 
     def get_nodes(self, repo_name, revision, root_path='/', flat=True):
         """
         recursive walk in root dir and return a set of all path in that dir
         based on repository walk function
 
         :param repo_name: name of repository
         :param revision: revision for which to list nodes
         :param root_path: root path to list
         :param flat: return as a list, if False returns a dict with decription
 
         """
         _files = list()
         _dirs = list()
         try:
             _repo = self.__get_repo(repo_name)
             changeset = _repo.scm_instance.get_changeset(revision)
             root_path = root_path.lstrip('/')
             for topnode, dirs, files in changeset.walk(root_path):
                 for f in files:
                     _files.append(f.path if flat else {"name": f.path,
                                                        "type": "file"})
                 for d in dirs:
                     _dirs.append(d.path if flat else {"name": d.path,
                                                       "type": "dir"})
         except RepositoryError:
             log.debug(traceback.format_exc())
             raise
 
         return _dirs, _files
 
     def get_unread_journal(self):
         return self.sa.query(UserLog).count()
 
     def get_repo_landing_revs(self, repo=None):
         """
         Generates select option with tags branches and bookmarks (for hg only)
         grouped by type
 
         :param repo:
         :type repo:
         """
 
         hist_l = []
         choices = []
         repo = self.__get_repo(repo)
         hist_l.append(['tip', _('latest tip')])
         choices.append('tip')
         if not repo:
             return choices, hist_l
 
         repo = repo.scm_instance
 
         branches_group = ([(k, k) for k, v in
                            repo.branches.iteritems()], _("Branches"))
         hist_l.append(branches_group)
         choices.extend([x[0] for x in branches_group[0]])
 
         if repo.alias == 'hg':
             bookmarks_group = ([(k, k) for k, v in
                                 repo.bookmarks.iteritems()], _("Bookmarks"))
             hist_l.append(bookmarks_group)
             choices.extend([x[0] for x in bookmarks_group[0]])
 
         tags_group = ([(k, k) for k, v in
                        repo.tags.iteritems()], _("Tags"))
         hist_l.append(tags_group)
         choices.extend([x[0] for x in tags_group[0]])
 
         return choices, hist_l
+
+    def install_git_hook(self, repo, force_create=False):
+        """
+        Creates a rhodecode hook inside a git repository
+
+        :param repo: Instance of VCS repo
+        :param force_create: Create even if same name hook exists
+        """
+
+        loc = jn(repo.path, 'hooks')
+        if not repo.bare:
+            loc = jn(repo.path, '.git', 'hooks')
+        if not os.path.isdir(loc):
+            os.makedirs(loc)
+
+        tmpl = pkg_resources.resource_string(
+            'rhodecode', jn('config', 'post_receive_tmpl.py')
+        )
+
+        _hook_file = jn(loc, 'post-receive')
+        _rhodecode_hook = False
+        log.debug('Installing git hook in repo %s' % repo)
+        if os.path.exists(_hook_file):
+            # let's take a look at this hook, maybe it's rhodecode ?
+            log.debug('hook exists, checking if it is from rhodecode')
+            _HOOK_VER_PAT = re.compile(r'^RC_HOOK_VER')
+            with open(_hook_file, 'rb') as f:
+                data = f.read()
+                matches = re.compile(r'(?:%s)\s*=\s*(.*)'
+                                     % 'RC_HOOK_VER').search(data)
+                if matches:
+                    try:
+                        ver = matches.groups()[0]
+                        log.debug('got %s it is rhodecode' % (ver))
+                        _rhodecode_hook = True
+                    except:
+                        log.error(traceback.format_exc())
+
+        if _rhodecode_hook or force_create:
+            log.debug('writing hook file !')
+            with open(_hook_file, 'wb') as f:
+                tmpl = tmpl.replace('_TMPL_', rhodecode.__version__)
+                f.write(tmpl)
+            os.chmod(_hook_file, 0755)
+        else:
+            log.debug('skipping writing hook file')
  No newline at end of file