Added repository followers to the get_repo api function result.

rhodecode/controllers/api/api.py

@@ -1,927 +1,932 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.controllers.api
     ~~~~~~~~~~~~~~~~~~~~~~~~~
 
     API controller for RhodeCode
 
     :created_on: Aug 20, 2011
     :author: marcink
     :copyright: (C) 2011-2012 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; version 2
 # of the License or (at your opinion) any later version of the license.
 #
 # 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, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 # MA  02110-1301, USA.
 
 import traceback
 import logging
 from pylons.controllers.util import abort
 
 from rhodecode.controllers.api import JSONRPCController, JSONRPCError
 from rhodecode.lib.auth import PasswordGenerator, AuthUser, \
     HasPermissionAllDecorator, HasPermissionAnyDecorator, \
     HasPermissionAnyApi, HasRepoPermissionAnyApi
 from rhodecode.lib.utils import map_groups, repo2db_mapper
 from rhodecode.model.meta import Session
 from rhodecode.model.scm import ScmModel
 from rhodecode.model.repo import RepoModel
 from rhodecode.model.user import UserModel
 from rhodecode.model.users_group import UsersGroupModel
 from rhodecode.model.permission import PermissionModel
 from rhodecode.model.db import Repository, RhodeCodeSetting, UserIpMap
 
 log = logging.getLogger(__name__)
 
 
 class OptionalAttr(object):
     """
     Special Optional Option that defines other attribute
     """
     def __init__(self, attr_name):
         self.attr_name = attr_name
 
     def __repr__(self):
         return '<OptionalAttr:%s>' % self.attr_name
 
     def __call__(self):
         return self
 #alias
 OAttr = OptionalAttr
 
 
 class Optional(object):
     """
     Defines an optional parameter::
 
         param = param.getval() if isinstance(param, Optional) else param
         param = param() if isinstance(param, Optional) else param
 
     is equivalent of::
 
         param = Optional.extract(param)
 
     """
     def __init__(self, type_):
         self.type_ = type_
 
     def __repr__(self):
         return '<Optional:%s>' % self.type_.__repr__()
 
     def __call__(self):
         return self.getval()
 
     def getval(self):
         """
         returns value from this Optional instance
         """
         return self.type_
 
     @classmethod
     def extract(cls, val):
         if isinstance(val, cls):
             return val.getval()
         return val
 
 
 def get_user_or_error(userid):
     """
     Get user by id or name or return JsonRPCError if not found
 
     :param userid:
     """
     user = UserModel().get_user(userid)
     if user is None:
         raise JSONRPCError("user `%s` does not exist" % userid)
     return user
 
 
 def get_repo_or_error(repoid):
     """
     Get repo by id or name or return JsonRPCError if not found
 
     :param userid:
     """
     repo = RepoModel().get_repo(repoid)
     if repo is None:
         raise JSONRPCError('repository `%s` does not exist' % (repoid))
     return repo
 
 
 def get_users_group_or_error(usersgroupid):
     """
     Get users group by id or name or return JsonRPCError if not found
 
     :param userid:
     """
     users_group = UsersGroupModel().get_group(usersgroupid)
     if users_group is None:
         raise JSONRPCError('users group `%s` does not exist' % usersgroupid)
     return users_group
 
 
 def get_perm_or_error(permid):
     """
     Get permission by id or name or return JsonRPCError if not found
 
     :param userid:
     """
     perm = PermissionModel().get_permission_by_name(permid)
     if perm is None:
         raise JSONRPCError('permission `%s` does not exist' % (permid))
     return perm
 
 
 class ApiController(JSONRPCController):
     """
     API Controller
 
 
     Each method needs to have USER as argument this is then based on given
     API_KEY propagated as instance of user object
 
     Preferably this should be first argument also
 
 
     Each function should also **raise** JSONRPCError for any
     errors that happens
 
     """
 
     @HasPermissionAllDecorator('hg.admin')
     def pull(self, apiuser, repoid):
         """
         Dispatch pull action on given repo
 
         :param apiuser:
         :param repoid:
         """
 
         repo = get_repo_or_error(repoid)
 
         try:
             ScmModel().pull_changes(repo.repo_name,
                                     self.rhodecode_user.username)
             return 'Pulled from `%s`' % repo.repo_name
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'Unable to pull changes from `%s`' % repo.repo_name
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def rescan_repos(self, apiuser, remove_obsolete=Optional(False)):
         """
         Dispatch rescan repositories action. If remove_obsolete is set
         than also delete repos that are in database but not in the filesystem.
         aka "clean zombies"
 
         :param apiuser:
         :param remove_obsolete:
         """
 
         try:
             rm_obsolete = Optional.extract(remove_obsolete)
             added, removed = repo2db_mapper(ScmModel().repo_scan(),
                                             remove_obsolete=rm_obsolete)
             return {'added': added, 'removed': removed}
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'Error occurred during rescan repositories action'
             )
 
     def lock(self, apiuser, repoid, locked, userid=Optional(OAttr('apiuser'))):
         """
         Set locking state on particular repository by given user, if
         this command is runned by non-admin account userid is set to user
         who is calling this method
 
         :param apiuser:
         :param repoid:
         :param userid:
         :param locked:
         """
         repo = get_repo_or_error(repoid)
         if HasPermissionAnyApi('hg.admin')(user=apiuser):
             pass
         elif HasRepoPermissionAnyApi('repository.admin',
                                      'repository.write')(user=apiuser,
                                                          repo_name=repo.repo_name):
             #make sure normal user does not pass someone else userid,
             #he is not allowed to do that
             if not isinstance(userid, Optional) and userid != apiuser.user_id:
                 raise JSONRPCError(
                     'userid is not the same as your user'
                 )
         else:
             raise JSONRPCError('repository `%s` does not exist' % (repoid))
 
         if isinstance(userid, Optional):
             userid = apiuser.user_id
         user = get_user_or_error(userid)
         locked = bool(locked)
         try:
             if locked:
                 Repository.lock(repo, user.user_id)
             else:
                 Repository.unlock(repo)
 
             return ('User `%s` set lock state for repo `%s` to `%s`'
                     % (user.username, repo.repo_name, locked))
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'Error occurred locking repository `%s`' % repo.repo_name
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def show_ip(self, apiuser, userid):
         """
         Shows IP address as seen from RhodeCode server, together with all
         defined IP addresses for given user
 
         :param apiuser:
         :param userid:
         """
         user = get_user_or_error(userid)
         ips = UserIpMap.query().filter(UserIpMap.user == user).all()
         return dict(
             ip_addr_server=self.ip_addr,
             user_ips=ips
         )
 
     def get_user(self, apiuser, userid=Optional(OAttr('apiuser'))):
         """"
         Get a user by username, or userid, if userid is given
 
         :param apiuser:
         :param userid:
         """
         if HasPermissionAnyApi('hg.admin')(user=apiuser) is False:
             #make sure normal user does not pass someone else userid,
             #he is not allowed to do that
             if not isinstance(userid, Optional) and userid != apiuser.user_id:
                 raise JSONRPCError(
                     'userid is not the same as your user'
                 )
 
         if isinstance(userid, Optional):
             userid = apiuser.user_id
 
         user = get_user_or_error(userid)
         data = user.get_api_data()
         data['permissions'] = AuthUser(user_id=user.user_id).permissions
         return data
 
     @HasPermissionAllDecorator('hg.admin')
     def get_users(self, apiuser):
         """"
         Get all users
 
         :param apiuser:
         """
 
         result = []
         for user in UserModel().get_all():
             result.append(user.get_api_data())
         return result
 
     @HasPermissionAllDecorator('hg.admin')
     def create_user(self, apiuser, username, email, password,
                     firstname=Optional(None), lastname=Optional(None),
                     active=Optional(True), admin=Optional(False),
                     ldap_dn=Optional(None)):
         """
         Create new user
 
         :param apiuser:
         :param username:
         :param email:
         :param password:
         :param firstname:
         :param lastname:
         :param active:
         :param admin:
         :param ldap_dn:
         """
 
         if UserModel().get_by_username(username):
             raise JSONRPCError("user `%s` already exist" % username)
 
         if UserModel().get_by_email(email, case_insensitive=True):
             raise JSONRPCError("email `%s` already exist" % email)
 
         if Optional.extract(ldap_dn):
             # generate temporary password if ldap_dn
             password = PasswordGenerator().gen_password(length=8)
 
         try:
             user = UserModel().create_or_update(
                 username=Optional.extract(username),
                 password=Optional.extract(password),
                 email=Optional.extract(email),
                 firstname=Optional.extract(firstname),
                 lastname=Optional.extract(lastname),
                 active=Optional.extract(active),
                 admin=Optional.extract(admin),
                 ldap_dn=Optional.extract(ldap_dn)
             )
             Session().commit()
             return dict(
                 msg='created new user `%s`' % username,
                 user=user.get_api_data()
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError('failed to create user `%s`' % username)
 
     @HasPermissionAllDecorator('hg.admin')
     def update_user(self, apiuser, userid, username=Optional(None),
                     email=Optional(None), firstname=Optional(None),
                     lastname=Optional(None), active=Optional(None),
                     admin=Optional(None), ldap_dn=Optional(None),
                     password=Optional(None)):
         """
         Updates given user
 
         :param apiuser:
         :param userid:
         :param username:
         :param email:
         :param firstname:
         :param lastname:
         :param active:
         :param admin:
         :param ldap_dn:
         :param password:
         """
 
         user = get_user_or_error(userid)
 
         # call function and store only updated arguments
         updates = {}
 
         def store_update(attr, name):
             if not isinstance(attr, Optional):
                 updates[name] = attr
 
         try:
 
             store_update(username, 'username')
             store_update(password, 'password')
             store_update(email, 'email')
             store_update(firstname, 'name')
             store_update(lastname, 'lastname')
             store_update(active, 'active')
             store_update(admin, 'admin')
             store_update(ldap_dn, 'ldap_dn')
 
             user = UserModel().update_user(user, **updates)
             Session().commit()
             return dict(
                 msg='updated user ID:%s %s' % (user.user_id, user.username),
                 user=user.get_api_data()
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError('failed to update user `%s`' % userid)
 
     @HasPermissionAllDecorator('hg.admin')
     def delete_user(self, apiuser, userid):
         """"
         Deletes an user
 
         :param apiuser:
         :param userid:
         """
         user = get_user_or_error(userid)
 
         try:
             UserModel().delete(userid)
             Session().commit()
             return dict(
                 msg='deleted user ID:%s %s' % (user.user_id, user.username),
                 user=None
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError('failed to delete ID:%s %s' % (user.user_id,
                                                               user.username))
 
     @HasPermissionAllDecorator('hg.admin')
     def get_users_group(self, apiuser, usersgroupid):
         """"
         Get users group by name or id
 
         :param apiuser:
         :param usersgroupid:
         """
         users_group = get_users_group_or_error(usersgroupid)
 
         data = users_group.get_api_data()
 
         members = []
         for user in users_group.members:
             user = user.user
             members.append(user.get_api_data())
         data['members'] = members
         return data
 
     @HasPermissionAllDecorator('hg.admin')
     def get_users_groups(self, apiuser):
         """"
         Get all users groups
 
         :param apiuser:
         """
 
         result = []
         for users_group in UsersGroupModel().get_all():
             result.append(users_group.get_api_data())
         return result
 
     @HasPermissionAllDecorator('hg.admin')
     def create_users_group(self, apiuser, group_name, active=Optional(True)):
         """
         Creates an new usergroup
 
         :param apiuser:
         :param group_name:
         :param active:
         """
 
         if UsersGroupModel().get_by_name(group_name):
             raise JSONRPCError("users group `%s` already exist" % group_name)
 
         try:
             active = Optional.extract(active)
             ug = UsersGroupModel().create(name=group_name, active=active)
             Session().commit()
             return dict(
                 msg='created new users group `%s`' % group_name,
                 users_group=ug.get_api_data()
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError('failed to create group `%s`' % group_name)
 
     @HasPermissionAllDecorator('hg.admin')
     def add_user_to_users_group(self, apiuser, usersgroupid, userid):
         """"
         Add a user to a users group
 
         :param apiuser:
         :param usersgroupid:
         :param userid:
         """
         user = get_user_or_error(userid)
         users_group = get_users_group_or_error(usersgroupid)
 
         try:
             ugm = UsersGroupModel().add_user_to_group(users_group, user)
             success = True if ugm != True else False
             msg = 'added member `%s` to users group `%s`' % (
                         user.username, users_group.users_group_name
                     )
             msg = msg if success else 'User is already in that group'
             Session().commit()
 
             return dict(
                 success=success,
                 msg=msg
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to add member to users group `%s`' % (
                     users_group.users_group_name
                 )
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def remove_user_from_users_group(self, apiuser, usersgroupid, userid):
         """
         Remove user from a group
 
         :param apiuser:
         :param usersgroupid:
         :param userid:
         """
         user = get_user_or_error(userid)
         users_group = get_users_group_or_error(usersgroupid)
 
         try:
             success = UsersGroupModel().remove_user_from_group(users_group,
                                                                user)
             msg = 'removed member `%s` from users group `%s`' % (
                         user.username, users_group.users_group_name
                     )
             msg = msg if success else "User wasn't in group"
             Session().commit()
             return dict(success=success, msg=msg)
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to remove member from users group `%s`' % (
                         users_group.users_group_name
                     )
             )
 
     def get_repo(self, apiuser, repoid):
         """"
         Get repository by name
 
         :param apiuser:
         :param repoid:
         """
         repo = get_repo_or_error(repoid)
 
         if HasPermissionAnyApi('hg.admin')(user=apiuser) is False:
             # check if we have admin permission for this repo !
             if HasRepoPermissionAnyApi('repository.admin')(user=apiuser,
                                             repo_name=repo.repo_name) is False:
                 raise JSONRPCError('repository `%s` does not exist' % (repoid))
 
         members = []
+        followers = []
         for user in repo.repo_to_perm:
             perm = user.permission.permission_name
             user = user.user
             user_data = user.get_api_data()
             user_data['type'] = "user"
             user_data['permission'] = perm
             members.append(user_data)
 
         for users_group in repo.users_group_to_perm:
             perm = users_group.permission.permission_name
             users_group = users_group.users_group
             users_group_data = users_group.get_api_data()
             users_group_data['type'] = "users_group"
             users_group_data['permission'] = perm
             members.append(users_group_data)
 
+        for user in repo.followers:
+            followers.append(user.user.get_api_data())
+
         data = repo.get_api_data()
         data['members'] = members
+        data['followers'] = followers
         return data
 
     def get_repos(self, apiuser):
         """"
         Get all repositories
 
         :param apiuser:
         """
         result = []
         if HasPermissionAnyApi('hg.admin')(user=apiuser) is False:
             repos = RepoModel().get_all_user_repos(user=apiuser)
         else:
             repos = RepoModel().get_all()
 
         for repo in repos:
             result.append(repo.get_api_data())
         return result
 
     @HasPermissionAllDecorator('hg.admin')
     def get_repo_nodes(self, apiuser, repoid, revision, root_path,
                        ret_type='all'):
         """
         returns a list of nodes and it's children
         for a given path at given revision. It's possible to specify ret_type
         to show only files or dirs
 
         :param apiuser:
         :param repoid: name or id of repository
         :param revision: revision for which listing should be done
         :param root_path: path from which start displaying
         :param ret_type: return type 'all|files|dirs' nodes
         """
         repo = get_repo_or_error(repoid)
         try:
             _d, _f = ScmModel().get_nodes(repo, revision, root_path,
                                           flat=False)
             _map = {
                 'all': _d + _f,
                 'files': _f,
                 'dirs': _d,
             }
             return _map[ret_type]
         except KeyError:
             raise JSONRPCError('ret_type must be one of %s' % _map.keys())
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to get repo: `%s` nodes' % repo.repo_name
             )
 
     @HasPermissionAnyDecorator('hg.admin', 'hg.create.repository')
     def create_repo(self, apiuser, repo_name, owner=Optional(OAttr('apiuser')),
                     repo_type=Optional('hg'),
                     description=Optional(''), private=Optional(False),
                     clone_uri=Optional(None), landing_rev=Optional('tip'),
                     enable_statistics=Optional(False),
                     enable_locking=Optional(False),
                     enable_downloads=Optional(False)):
         """
         Create repository, if clone_url is given it makes a remote clone
         if repo_name is within a group name the groups will be created
         automatically if they aren't present
 
         :param apiuser:
         :param repo_name:
         :param onwer:
         :param repo_type:
         :param description:
         :param private:
         :param clone_uri:
         :param landing_rev:
         """
         if HasPermissionAnyApi('hg.admin')(user=apiuser) is False:
             if not isinstance(owner, Optional):
                 #forbid setting owner for non-admins
                 raise JSONRPCError(
                     'Only RhodeCode admin can specify `owner` param'
                 )
         if isinstance(owner, Optional):
             owner = apiuser.user_id
 
         owner = get_user_or_error(owner)
 
         if RepoModel().get_by_repo_name(repo_name):
             raise JSONRPCError("repo `%s` already exist" % repo_name)
 
         defs = RhodeCodeSetting.get_default_repo_settings(strip_prefix=True)
         if isinstance(private, Optional):
             private = defs.get('repo_private') or Optional.extract(private)
         if isinstance(repo_type, Optional):
             repo_type = defs.get('repo_type')
         if isinstance(enable_statistics, Optional):
             enable_statistics = defs.get('repo_enable_statistics')
         if isinstance(enable_locking, Optional):
             enable_locking = defs.get('repo_enable_locking')
         if isinstance(enable_downloads, Optional):
             enable_downloads = defs.get('repo_enable_downloads')
 
         clone_uri = Optional.extract(clone_uri)
         description = Optional.extract(description)
         landing_rev = Optional.extract(landing_rev)
 
         try:
             # create structure of groups and return the last group
             group = map_groups(repo_name)
 
             repo = RepoModel().create_repo(
                 repo_name=repo_name,
                 repo_type=repo_type,
                 description=description,
                 owner=owner,
                 private=private,
                 clone_uri=clone_uri,
                 repos_group=group,
                 landing_rev=landing_rev,
                 enable_statistics=enable_statistics,
                 enable_downloads=enable_downloads,
                 enable_locking=enable_locking
             )
 
             Session().commit()
             return dict(
                 msg="Created new repository `%s`" % (repo.repo_name),
                 repo=repo.get_api_data()
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError('failed to create repository `%s`' % repo_name)
 
     @HasPermissionAnyDecorator('hg.admin', 'hg.fork.repository')
     def fork_repo(self, apiuser, repoid, fork_name, owner=Optional(OAttr('apiuser')),
                   description=Optional(''), copy_permissions=Optional(False),
                   private=Optional(False), landing_rev=Optional('tip')):
         repo = get_repo_or_error(repoid)
         repo_name = repo.repo_name
 
         _repo = RepoModel().get_by_repo_name(fork_name)
         if _repo:
             type_ = 'fork' if _repo.fork else 'repo'
             raise JSONRPCError("%s `%s` already exist" % (type_, fork_name))
 
         if HasPermissionAnyApi('hg.admin')(user=apiuser):
             pass
         elif HasRepoPermissionAnyApi('repository.admin',
                                      'repository.write',
                                      'repository.read')(user=apiuser,
                                                         repo_name=repo.repo_name):
             if not isinstance(owner, Optional):
                 #forbid setting owner for non-admins
                 raise JSONRPCError(
                     'Only RhodeCode admin can specify `owner` param'
                 )
         else:
             raise JSONRPCError('repository `%s` does not exist' % (repoid))
 
         if isinstance(owner, Optional):
             owner = apiuser.user_id
 
         owner = get_user_or_error(owner)
 
         try:
             # create structure of groups and return the last group
             group = map_groups(fork_name)
 
             form_data = dict(
                 repo_name=fork_name,
                 repo_name_full=fork_name,
                 repo_group=group,
                 repo_type=repo.repo_type,
                 description=Optional.extract(description),
                 private=Optional.extract(private),
                 copy_permissions=Optional.extract(copy_permissions),
                 landing_rev=Optional.extract(landing_rev),
                 update_after_clone=False,
                 fork_parent_id=repo.repo_id,
             )
             RepoModel().create_fork(form_data, cur_user=owner)
             return dict(
                 msg='Created fork of `%s` as `%s`' % (repo.repo_name,
                                                       fork_name),
                 success=True  # cannot return the repo data here since fork
                               # cann be done async
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to fork repository `%s` as `%s`' % (repo_name,
                                                             fork_name)
             )
 
     def delete_repo(self, apiuser, repoid):
         """
         Deletes a given repository
 
         :param apiuser:
         :param repoid:
         """
         repo = get_repo_or_error(repoid)
 
         if HasPermissionAnyApi('hg.admin')(user=apiuser) is False:
             # check if we have admin permission for this repo !
             if HasRepoPermissionAnyApi('repository.admin')(user=apiuser,
                                             repo_name=repo.repo_name) is False:
                  raise JSONRPCError('repository `%s` does not exist' % (repoid))
 
         try:
             RepoModel().delete(repo)
             Session().commit()
             return dict(
                 msg='Deleted repository `%s`' % repo.repo_name,
                 success=True
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to delete repository `%s`' % repo.repo_name
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def grant_user_permission(self, apiuser, repoid, userid, perm):
         """
         Grant permission for user on given repository, or update existing one
         if found
 
         :param repoid:
         :param userid:
         :param perm:
         """
         repo = get_repo_or_error(repoid)
         user = get_user_or_error(userid)
         perm = get_perm_or_error(perm)
 
         try:
 
             RepoModel().grant_user_permission(repo=repo, user=user, perm=perm)
 
             Session().commit()
             return dict(
                 msg='Granted perm: `%s` for user: `%s` in repo: `%s`' % (
                     perm.permission_name, user.username, repo.repo_name
                 ),
                 success=True
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to edit permission for user: `%s` in repo: `%s`' % (
                     userid, repoid
                 )
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def revoke_user_permission(self, apiuser, repoid, userid):
         """
         Revoke permission for user on given repository
 
         :param apiuser:
         :param repoid:
         :param userid:
         """
 
         repo = get_repo_or_error(repoid)
         user = get_user_or_error(userid)
         try:
 
             RepoModel().revoke_user_permission(repo=repo, user=user)
 
             Session().commit()
             return dict(
                 msg='Revoked perm for user: `%s` in repo: `%s`' % (
                     user.username, repo.repo_name
                 ),
                 success=True
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to edit permission for user: `%s` in repo: `%s`' % (
                     userid, repoid
                 )
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def grant_users_group_permission(self, apiuser, repoid, usersgroupid,
                                      perm):
         """
         Grant permission for users group on given repository, or update
         existing one if found
 
         :param apiuser:
         :param repoid:
         :param usersgroupid:
         :param perm:
         """
         repo = get_repo_or_error(repoid)
         perm = get_perm_or_error(perm)
         users_group = get_users_group_or_error(usersgroupid)
 
         try:
             RepoModel().grant_users_group_permission(repo=repo,
                                                      group_name=users_group,
                                                      perm=perm)
 
             Session().commit()
             return dict(
                 msg='Granted perm: `%s` for users group: `%s` in '
                     'repo: `%s`' % (
                     perm.permission_name, users_group.users_group_name,
                     repo.repo_name
                 ),
                 success=True
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to edit permission for users group: `%s` in '
                 'repo: `%s`' % (
                     usersgroupid, repo.repo_name
                 )
             )
 
     @HasPermissionAllDecorator('hg.admin')
     def revoke_users_group_permission(self, apiuser, repoid, usersgroupid):
         """
         Revoke permission for users group on given repository
 
         :param apiuser:
         :param repoid:
         :param usersgroupid:
         """
         repo = get_repo_or_error(repoid)
         users_group = get_users_group_or_error(usersgroupid)
 
         try:
             RepoModel().revoke_users_group_permission(repo=repo,
                                                       group_name=users_group)
 
             Session().commit()
             return dict(
                 msg='Revoked perm for users group: `%s` in repo: `%s`' % (
                     users_group.users_group_name, repo.repo_name
                 ),
                 success=True
             )
         except Exception:
             log.error(traceback.format_exc())
             raise JSONRPCError(
                 'failed to edit permission for users group: `%s` in '
                 'repo: `%s`' % (
                     users_group.users_group_name, repo.repo_name
                 )
             )