pr: Unify clone url generation of shadow repository.

rhodecode/lib/middleware/simplevcs.py

@@ -1,513 +1,510 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2014-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 SimpleVCS middleware for handling protocol request (push/clone etc.)
 It's implemented with basic auth function
 """
 
 import os
 import logging
 import importlib
 import re
 from functools import wraps
 
 from paste.httpheaders import REMOTE_USER, AUTH_TYPE
 from webob.exc import (
     HTTPNotFound, HTTPForbidden, HTTPNotAcceptable, HTTPInternalServerError)
 
 import rhodecode
 from rhodecode.authentication.base import authenticate, VCS_TYPE
 from rhodecode.lib.auth import AuthUser, HasPermissionAnyMiddleware
 from rhodecode.lib.base import BasicAuth, get_ip_addr, vcs_operation_context
 from rhodecode.lib.exceptions import (
     HTTPLockedRC, HTTPRequirementError, UserCreationError,
     NotAllowedToCreateUserError)
 from rhodecode.lib.hooks_daemon import prepare_callback_daemon
 from rhodecode.lib.middleware import appenlight
 from rhodecode.lib.middleware.utils import scm_app
 from rhodecode.lib.utils import (
     is_valid_repo, get_rhodecode_realm, get_rhodecode_base_path)
 from rhodecode.lib.utils2 import safe_str, fix_PATH, str2bool
 from rhodecode.lib.vcs.conf import settings as vcs_settings
 from rhodecode.lib.vcs.backends import base
 from rhodecode.model import meta
 from rhodecode.model.db import User, Repository, PullRequest
 from rhodecode.model.scm import ScmModel
 from rhodecode.model.pull_request import PullRequestModel
 
 
 log = logging.getLogger(__name__)
 
 
 def initialize_generator(factory):
     """
     Initializes the returned generator by draining its first element.
 
     This can be used to give a generator an initializer, which is the code
     up to the first yield statement. This decorator enforces that the first
     produced element has the value ``"__init__"`` to make its special
     purpose very explicit in the using code.
     """
 
     @wraps(factory)
     def wrapper(*args, **kwargs):
         gen = factory(*args, **kwargs)
         try:
             init = gen.next()
         except StopIteration:
             raise ValueError('Generator must yield at least one element.')
         if init != "__init__":
             raise ValueError('First yielded element must be "__init__".')
         return gen
     return wrapper
 
 
 class SimpleVCS(object):
     """Common functionality for SCM HTTP handlers."""
 
     SCM = 'unknown'
 
     acl_repo_name = None
     url_repo_name = None
     vcs_repo_name = None
 
     def __init__(self, application, config, registry):
         self.registry = registry
         self.application = application
         self.config = config
         # re-populated by specialized middleware
         self.repo_vcs_config = base.Config()
 
         # base path of repo locations
         self.basepath = get_rhodecode_base_path()
         # authenticate this VCS request using authfunc
         auth_ret_code_detection = \
             str2bool(self.config.get('auth_ret_code_detection', False))
         self.authenticate = BasicAuth(
             '', authenticate, registry, config.get('auth_ret_code'),
             auth_ret_code_detection)
         self.ip_addr = '0.0.0.0'
 
     def set_repo_names(self, environ):
         """
         This will populate the attributes acl_repo_name, url_repo_name,
         vcs_repo_name and pr_id on the current instance.
         """
-        # TODO: martinb: Unify generation/suffix of clone url. It is currently
-        #       used here in the regex, in PullRequest in get_api_data() and
-        #       indirectly in routing configuration.
         # TODO: martinb: Move to class or module scope.
         # TODO: martinb: Check if we have to use re.UNICODE.
         # TODO: martinb: Check which chars are allowed for repo/group names.
         #       These chars are excluded: '`?=[]\;\'"<>,/~!@#$%^&*()+{}|: '
         #       Code from: rhodecode/lib/utils.py:repo_name_slug()
         pr_regex = re.compile(
             '(?P<base_name>(?:[\w-]+)(?:/[\w-]+)*)/'    # repo groups
             '(?P<repo_name>[\w-]+)'                     # target repo name
             '/pull-request/(?P<pr_id>\d+)/repository')  # pr suffix
 
         # Get url repo name from environment.
         self.url_repo_name = self._get_repository_name(environ)
 
         # Check if this is a request to a shadow repository. In case of a
         # shadow repo set vcs_repo_name to the file system path pointing to the
         # shadow repo. And set acl_repo_name to the pull request target repo
         # because we use the target repo for permission checks. Otherwise all
         # names are equal.
         match = pr_regex.match(self.url_repo_name)
         if match:
             # Get pull request instance.
             match_dict = match.groupdict()
             pr_id = match_dict['pr_id']
             pull_request = PullRequest.get(pr_id)
 
             # Get file system path to shadow repository.
             workspace_id = PullRequestModel()._workspace_id(pull_request)
             target_vcs = pull_request.target_repo.scm_instance()
             vcs_repo_name = target_vcs._get_shadow_repository_path(
                 workspace_id)
 
             # Store names for later usage.
             self.pr_id = pr_id
             self.vcs_repo_name = vcs_repo_name
             self.acl_repo_name = pull_request.target_repo.repo_name
         else:
             # All names are equal for normal (non shadow) repositories.
             self.acl_repo_name = self.url_repo_name
             self.vcs_repo_name = self.url_repo_name
             self.pr_id = None
 
     @property
     def repo_name(self):
         # TODO: johbo: Remove, switch to correct repo name attribute
         return self.acl_repo_name
 
     @property
     def scm_app(self):
         custom_implementation = self.config.get('vcs.scm_app_implementation')
         if custom_implementation and custom_implementation != 'pyro4':
             log.info(
                 "Using custom implementation of scm_app: %s",
                 custom_implementation)
             scm_app_impl = importlib.import_module(custom_implementation)
         else:
             scm_app_impl = scm_app
         return scm_app_impl
 
     def _get_by_id(self, repo_name):
         """
         Gets a special pattern _<ID> from clone url and tries to replace it
         with a repository_name for support of _<ID> non changeable urls
         """
 
         data = repo_name.split('/')
         if len(data) >= 2:
             from rhodecode.model.repo import RepoModel
             by_id_match = RepoModel().get_repo_by_id(repo_name)
             if by_id_match:
                 data[1] = by_id_match.repo_name
 
         return safe_str('/'.join(data))
 
     def _invalidate_cache(self, repo_name):
         """
         Set's cache for this repository for invalidation on next access
 
         :param repo_name: full repo name, also a cache key
         """
         ScmModel().mark_for_invalidation(repo_name)
 
     def is_valid_and_existing_repo(self, repo_name, base_path, scm_type):
         db_repo = Repository.get_by_repo_name(repo_name)
         if not db_repo:
             log.debug('Repository `%s` not found inside the database.',
                       repo_name)
             return False
 
         if db_repo.repo_type != scm_type:
             log.warning(
                 'Repository `%s` have incorrect scm_type, expected %s got %s',
                 repo_name, db_repo.repo_type, scm_type)
             return False
 
         return is_valid_repo(repo_name, base_path, expect_scm=scm_type)
 
     def valid_and_active_user(self, user):
         """
         Checks if that user is not empty, and if it's actually object it checks
         if he's active.
 
         :param user: user object or None
         :return: boolean
         """
         if user is None:
             return False
 
         elif user.active:
             return True
 
         return False
 
     def _check_permission(self, action, user, repo_name, ip_addr=None):
         """
         Checks permissions using action (push/pull) user and repository
         name
 
         :param action: push or pull action
         :param user: user instance
         :param repo_name: repository name
         """
         # check IP
         inherit = user.inherit_default_permissions
         ip_allowed = AuthUser.check_ip_allowed(user.user_id, ip_addr,
                                                inherit_from_default=inherit)
         if ip_allowed:
             log.info('Access for IP:%s allowed', ip_addr)
         else:
             return False
 
         if action == 'push':
             if not HasPermissionAnyMiddleware('repository.write',
                                               'repository.admin')(user,
                                                                   repo_name):
                 return False
 
         else:
             # any other action need at least read permission
             if not HasPermissionAnyMiddleware('repository.read',
                                               'repository.write',
                                               'repository.admin')(user,
                                                                   repo_name):
                 return False
 
         return True
 
     def _check_ssl(self, environ, start_response):
         """
         Checks the SSL check flag and returns False if SSL is not present
         and required True otherwise
         """
         org_proto = environ['wsgi._org_proto']
         # check if we have SSL required  ! if not it's a bad request !
         require_ssl = str2bool(self.repo_vcs_config.get('web', 'push_ssl'))
         if require_ssl and org_proto == 'http':
             log.debug('proto is %s and SSL is required BAD REQUEST !',
                       org_proto)
             return False
         return True
 
     def __call__(self, environ, start_response):
         try:
             return self._handle_request(environ, start_response)
         except Exception:
             log.exception("Exception while handling request")
             appenlight.track_exception(environ)
             return HTTPInternalServerError()(environ, start_response)
         finally:
             meta.Session.remove()
 
     def _handle_request(self, environ, start_response):
 
         if not self._check_ssl(environ, start_response):
             reason = ('SSL required, while RhodeCode was unable '
                       'to detect this as SSL request')
             log.debug('User not allowed to proceed, %s', reason)
             return HTTPNotAcceptable(reason)(environ, start_response)
 
         if not self.repo_name:
             log.warning('Repository name is empty: %s', self.repo_name)
             # failed to get repo name, we fail now
             return HTTPNotFound()(environ, start_response)
         log.debug('Extracted repo name is %s', self.repo_name)
 
         ip_addr = get_ip_addr(environ)
         username = None
 
         # skip passing error to error controller
         environ['pylons.status_code_redirect'] = True
 
         # ======================================================================
         # GET ACTION PULL or PUSH
         # ======================================================================
         action = self._get_action(environ)
 
         # ======================================================================
         # Check if this is a request to a shadow repository of a pull request.
         # In this case only pull action is allowed.
         # ======================================================================
         if self.pr_id is not None and action != 'pull':
             reason = 'Only pull action is allowed for shadow repositories.'
             log.debug('User not allowed to proceed, %s', reason)
             return HTTPNotAcceptable(reason)(environ, start_response)
 
         # ======================================================================
         # CHECK ANONYMOUS PERMISSION
         # ======================================================================
         if action in ['pull', 'push']:
             anonymous_user = User.get_default_user()
             username = anonymous_user.username
             if anonymous_user.active:
                 # ONLY check permissions if the user is activated
                 anonymous_perm = self._check_permission(
                     action, anonymous_user, self.repo_name, ip_addr)
             else:
                 anonymous_perm = False
 
             if not anonymous_user.active or not anonymous_perm:
                 if not anonymous_user.active:
                     log.debug('Anonymous access is disabled, running '
                               'authentication')
 
                 if not anonymous_perm:
                     log.debug('Not enough credentials to access this '
                               'repository as anonymous user')
 
                 username = None
                 # ==============================================================
                 # DEFAULT PERM FAILED OR ANONYMOUS ACCESS IS DISABLED SO WE
                 # NEED TO AUTHENTICATE AND ASK FOR AUTH USER PERMISSIONS
                 # ==============================================================
 
                 # try to auth based on environ, container auth methods
                 log.debug('Running PRE-AUTH for container based authentication')
                 pre_auth = authenticate(
                     '', '', environ, VCS_TYPE, registry=self.registry)
                 if pre_auth and pre_auth.get('username'):
                     username = pre_auth['username']
                 log.debug('PRE-AUTH got %s as username', username)
 
                 # If not authenticated by the container, running basic auth
                 if not username:
                     self.authenticate.realm = get_rhodecode_realm()
 
                     try:
                         result = self.authenticate(environ)
                     except (UserCreationError, NotAllowedToCreateUserError) as e:
                         log.error(e)
                         reason = safe_str(e)
                         return HTTPNotAcceptable(reason)(environ, start_response)
 
                     if isinstance(result, str):
                         AUTH_TYPE.update(environ, 'basic')
                         REMOTE_USER.update(environ, result)
                         username = result
                     else:
                         return result.wsgi_application(environ, start_response)
 
                 # ==============================================================
                 # CHECK PERMISSIONS FOR THIS REQUEST USING GIVEN USERNAME
                 # ==============================================================
                 user = User.get_by_username(username)
                 if not self.valid_and_active_user(user):
                     return HTTPForbidden()(environ, start_response)
                 username = user.username
                 user.update_lastactivity()
                 meta.Session().commit()
 
                 # check user attributes for password change flag
                 user_obj = user
                 if user_obj and user_obj.username != User.DEFAULT_USER and \
                         user_obj.user_data.get('force_password_change'):
                     reason = 'password change required'
                     log.debug('User not allowed to authenticate, %s', reason)
                     return HTTPNotAcceptable(reason)(environ, start_response)
 
                 # check permissions for this repository
                 perm = self._check_permission(
                     action, user, self.repo_name, ip_addr)
                 if not perm:
                     return HTTPForbidden()(environ, start_response)
 
         # extras are injected into UI object and later available
         # in hooks executed by rhodecode
         check_locking = _should_check_locking(environ.get('QUERY_STRING'))
         extras = vcs_operation_context(
             environ, repo_name=self.repo_name, username=username,
             action=action, scm=self.SCM,
             check_locking=check_locking)
 
         # ======================================================================
         # REQUEST HANDLING
         # ======================================================================
         str_repo_name = safe_str(self.repo_name)
         repo_path = os.path.join(
             safe_str(self.basepath), safe_str(self.vcs_repo_name))
         log.debug('Repository path is %s', repo_path)
 
         fix_PATH()
 
         log.info(
             '%s action on %s repo "%s" by "%s" from %s',
             action, self.SCM, str_repo_name, safe_str(username), ip_addr)
 
         return self._generate_vcs_response(
             environ, start_response, repo_path, self.url_repo_name, extras, action)
 
     @initialize_generator
     def _generate_vcs_response(
             self, environ, start_response, repo_path, repo_name, extras,
             action):
         """
         Returns a generator for the response content.
 
         This method is implemented as a generator, so that it can trigger
         the cache validation after all content sent back to the client. It
         also handles the locking exceptions which will be triggered when
         the first chunk is produced by the underlying WSGI application.
         """
         callback_daemon, extras = self._prepare_callback_daemon(extras)
         config = self._create_config(extras, self.acl_repo_name)
         log.debug('HOOKS extras is %s', extras)
         app = self._create_wsgi_app(repo_path, repo_name, config)
 
         try:
             with callback_daemon:
                 try:
                     response = app(environ, start_response)
                 finally:
                     # This statement works together with the decorator
                     # "initialize_generator" above. The decorator ensures that
                     # we hit the first yield statement before the generator is
                     # returned back to the WSGI server. This is needed to
                     # ensure that the call to "app" above triggers the
                     # needed callback to "start_response" before the
                     # generator is actually used.
                     yield "__init__"
 
                 for chunk in response:
                     yield chunk
         except Exception as exc:
             # TODO: johbo: Improve "translating" back the exception.
             if getattr(exc, '_vcs_kind', None) == 'repo_locked':
                 exc = HTTPLockedRC(*exc.args)
                 _code = rhodecode.CONFIG.get('lock_ret_code')
                 log.debug('Repository LOCKED ret code %s!', (_code,))
             elif getattr(exc, '_vcs_kind', None) == 'requirement':
                 log.debug(
                     'Repository requires features unknown to this Mercurial')
                 exc = HTTPRequirementError(*exc.args)
             else:
                 raise
 
             for chunk in exc(environ, start_response):
                 yield chunk
         finally:
             # invalidate cache on push
             try:
                 if action == 'push':
                     self._invalidate_cache(repo_name)
             finally:
                 meta.Session.remove()
 
     def _get_repository_name(self, environ):
         """Get repository name out of the environmnent
 
         :param environ: WSGI environment
         """
         raise NotImplementedError()
 
     def _get_action(self, environ):
         """Map request commands into a pull or push command.
 
         :param environ: WSGI environment
         """
         raise NotImplementedError()
 
     def _create_wsgi_app(self, repo_path, repo_name, config):
         """Return the WSGI app that will finally handle the request."""
         raise NotImplementedError()
 
     def _create_config(self, extras, repo_name):
         """Create a Pyro safe config representation."""
         raise NotImplementedError()
 
     def _prepare_callback_daemon(self, extras):
         return prepare_callback_daemon(
             extras, protocol=vcs_settings.HOOKS_PROTOCOL,
             use_direct_calls=vcs_settings.HOOKS_DIRECT_CALLS)
 
 
 def _should_check_locking(query_string):
     # this is kind of hacky, but due to how mercurial handles client-server
     # server see all operation on commit; bookmarks, phases and
     # obsolescence marker in different transaction, we don't want to check
     # locking on those
     return query_string not in ['cmd=listkeys']

rhodecode/model/db.py

@@ -1,3658 +1,3658 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2010-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 """
 Database Models for RhodeCode Enterprise
 """
 
 import re
 import os
 import time
 import hashlib
 import logging
 import datetime
 import warnings
 import ipaddress
 import functools
 import traceback
 import collections
 
 
 from sqlalchemy import *
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import (
     relationship, joinedload, class_mapper, validates, aliased)
 from sqlalchemy.sql.expression import true
 from beaker.cache import cache_region
 from webob.exc import HTTPNotFound
 from zope.cachedescriptors.property import Lazy as LazyProperty
 
 from pylons import url
 from pylons.i18n.translation import lazy_ugettext as _
 
 from rhodecode.lib.vcs import get_vcs_instance
 from rhodecode.lib.vcs.backends.base import EmptyCommit, Reference
 from rhodecode.lib.utils2 import (
     str2bool, safe_str, get_commit_safe, safe_unicode, md5_safe,
     time_to_datetime, aslist, Optional, safe_int, get_clone_url, AttributeDict,
     glob2re)
 from rhodecode.lib.jsonalchemy import MutationObj, MutationList, JsonType
 from rhodecode.lib.ext_json import json
 from rhodecode.lib.caching_query import FromCache
 from rhodecode.lib.encrypt import AESCipher
 
 from rhodecode.model.meta import Base, Session
 
 URL_SEP = '/'
 log = logging.getLogger(__name__)
 
 # =============================================================================
 # BASE CLASSES
 # =============================================================================
 
 # this is propagated from .ini file rhodecode.encrypted_values.secret or
 # beaker.session.secret if first is not set.
 # and initialized at environment.py
 ENCRYPTION_KEY = None
 
 # used to sort permissions by types, '#' used here is not allowed to be in
 # usernames, and it's very early in sorted string.printable table.
 PERMISSION_TYPE_SORT = {
     'admin': '####',
     'write': '###',
     'read':  '##',
     'none':  '#',
 }
 
 
 def display_sort(obj):
     """
     Sort function used to sort permissions in .permissions() function of
     Repository, RepoGroup, UserGroup. Also it put the default user in front
     of all other resources
     """
 
     if obj.username == User.DEFAULT_USER:
         return '#####'
     prefix = PERMISSION_TYPE_SORT.get(obj.permission.split('.')[-1], '')
     return prefix + obj.username
 
 
 def _hash_key(k):
     return md5_safe(k)
 
 
 class EncryptedTextValue(TypeDecorator):
     """
     Special column for encrypted long text data, use like::
 
         value = Column("encrypted_value", EncryptedValue(), nullable=False)
 
     This column is intelligent so if value is in unencrypted form it return
     unencrypted form, but on save it always encrypts
     """
     impl = Text
 
     def process_bind_param(self, value, dialect):
         if not value:
             return value
         if value.startswith('enc$aes$') or value.startswith('enc$aes_hmac$'):
             # protect against double encrypting if someone manually starts
             # doing
             raise ValueError('value needs to be in unencrypted format, ie. '
                              'not starting with enc$aes')
         return 'enc$aes_hmac$%s' % AESCipher(
             ENCRYPTION_KEY, hmac=True).encrypt(value)
 
     def process_result_value(self, value, dialect):
         import rhodecode
 
         if not value:
             return value
 
         parts = value.split('$', 3)
         if not len(parts) == 3:
             # probably not encrypted values
             return value
         else:
             if parts[0] != 'enc':
                 # parts ok but without our header ?
                 return value
             enc_strict_mode = str2bool(rhodecode.CONFIG.get(
                 'rhodecode.encrypted_values.strict') or True)
             # at that stage we know it's our encryption
             if parts[1] == 'aes':
                 decrypted_data = AESCipher(ENCRYPTION_KEY).decrypt(parts[2])
             elif parts[1] == 'aes_hmac':
                 decrypted_data = AESCipher(
                     ENCRYPTION_KEY, hmac=True,
                     strict_verification=enc_strict_mode).decrypt(parts[2])
             else:
                 raise ValueError(
                     'Encryption type part is wrong, must be `aes` '
                     'or `aes_hmac`, got `%s` instead' % (parts[1]))
             return decrypted_data
 
 
 class BaseModel(object):
     """
     Base Model for all classes
     """
 
     @classmethod
     def _get_keys(cls):
         """return column names for this model """
         return class_mapper(cls).c.keys()
 
     def get_dict(self):
         """
         return dict with keys and values corresponding
         to this model data """
 
         d = {}
         for k in self._get_keys():
             d[k] = getattr(self, k)
 
         # also use __json__() if present to get additional fields
         _json_attr = getattr(self, '__json__', None)
         if _json_attr:
             # update with attributes from __json__
             if callable(_json_attr):
                 _json_attr = _json_attr()
             for k, val in _json_attr.iteritems():
                 d[k] = val
         return d
 
     def get_appstruct(self):
         """return list with keys and values tuples corresponding
         to this model data """
 
         l = []
         for k in self._get_keys():
             l.append((k, getattr(self, k),))
         return l
 
     def populate_obj(self, populate_dict):
         """populate model with data from given populate_dict"""
 
         for k in self._get_keys():
             if k in populate_dict:
                 setattr(self, k, populate_dict[k])
 
     @classmethod
     def query(cls):
         return Session().query(cls)
 
     @classmethod
     def get(cls, id_):
         if id_:
             return cls.query().get(id_)
 
     @classmethod
     def get_or_404(cls, id_):
         try:
             id_ = int(id_)
         except (TypeError, ValueError):
             raise HTTPNotFound
 
         res = cls.query().get(id_)
         if not res:
             raise HTTPNotFound
         return res
 
     @classmethod
     def getAll(cls):
         # deprecated and left for backward compatibility
         return cls.get_all()
 
     @classmethod
     def get_all(cls):
         return cls.query().all()
 
     @classmethod
     def delete(cls, id_):
         obj = cls.query().get(id_)
         Session().delete(obj)
 
     @classmethod
     def identity_cache(cls, session, attr_name, value):
         exist_in_session = []
         for (item_cls, pkey), instance in session.identity_map.items():
             if cls == item_cls and getattr(instance, attr_name) == value:
                 exist_in_session.append(instance)
         if exist_in_session:
             if len(exist_in_session) == 1:
                 return exist_in_session[0]
             log.exception(
                 'multiple objects with attr %s and '
                 'value %s found with same name: %r',
                 attr_name, value, exist_in_session)
 
     def __repr__(self):
         if hasattr(self, '__unicode__'):
             # python repr needs to return str
             try:
                 return safe_str(self.__unicode__())
             except UnicodeDecodeError:
                 pass
         return '<DB:%s>' % (self.__class__.__name__)
 
 
 class RhodeCodeSetting(Base, BaseModel):
     __tablename__ = 'rhodecode_settings'
     __table_args__ = (
         UniqueConstraint('app_settings_name'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     SETTINGS_TYPES = {
         'str': safe_str,
         'int': safe_int,
         'unicode': safe_unicode,
         'bool': str2bool,
         'list': functools.partial(aslist, sep=',')
     }
     DEFAULT_UPDATE_URL = 'https://rhodecode.com/api/v1/info/versions'
     GLOBAL_CONF_KEY = 'app_settings'
 
     app_settings_id = Column("app_settings_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     app_settings_name = Column("app_settings_name", String(255), nullable=True, unique=None, default=None)
     _app_settings_value = Column("app_settings_value", String(4096), nullable=True, unique=None, default=None)
     _app_settings_type = Column("app_settings_type", String(255), nullable=True, unique=None, default=None)
 
     def __init__(self, key='', val='', type='unicode'):
         self.app_settings_name = key
         self.app_settings_type = type
         self.app_settings_value = val
 
     @validates('_app_settings_value')
     def validate_settings_value(self, key, val):
         assert type(val) == unicode
         return val
 
     @hybrid_property
     def app_settings_value(self):
         v = self._app_settings_value
         _type = self.app_settings_type
         if _type:
             _type = self.app_settings_type.split('.')[0]
             # decode the encrypted value
             if 'encrypted' in self.app_settings_type:
                 cipher = EncryptedTextValue()
                 v = safe_unicode(cipher.process_result_value(v, None))
 
         converter = self.SETTINGS_TYPES.get(_type) or \
             self.SETTINGS_TYPES['unicode']
         return converter(v)
 
     @app_settings_value.setter
     def app_settings_value(self, val):
         """
         Setter that will always make sure we use unicode in app_settings_value
 
         :param val:
         """
         val = safe_unicode(val)
         # encode the encrypted value
         if 'encrypted' in self.app_settings_type:
             cipher = EncryptedTextValue()
             val = safe_unicode(cipher.process_bind_param(val, None))
         self._app_settings_value = val
 
     @hybrid_property
     def app_settings_type(self):
         return self._app_settings_type
 
     @app_settings_type.setter
     def app_settings_type(self, val):
         if val.split('.')[0] not in self.SETTINGS_TYPES:
             raise Exception('type must be one of %s got %s'
                             % (self.SETTINGS_TYPES.keys(), val))
         self._app_settings_type = val
 
     def __unicode__(self):
         return u"<%s('%s:%s[%s]')>" % (
             self.__class__.__name__,
             self.app_settings_name, self.app_settings_value,
             self.app_settings_type
         )
 
 
 class RhodeCodeUi(Base, BaseModel):
     __tablename__ = 'rhodecode_ui'
     __table_args__ = (
         UniqueConstraint('ui_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     HOOK_REPO_SIZE = 'changegroup.repo_size'
     # HG
     HOOK_PRE_PULL = 'preoutgoing.pre_pull'
     HOOK_PULL = 'outgoing.pull_logger'
     HOOK_PRE_PUSH = 'prechangegroup.pre_push'
     HOOK_PUSH = 'changegroup.push_logger'
 
     # TODO: johbo: Unify way how hooks are configured for git and hg,
     # git part is currently hardcoded.
 
     # SVN PATTERNS
     SVN_BRANCH_ID = 'vcs_svn_branch'
     SVN_TAG_ID = 'vcs_svn_tag'
 
     ui_id = Column(
         "ui_id", Integer(), nullable=False, unique=True, default=None,
         primary_key=True)
     ui_section = Column(
         "ui_section", String(255), nullable=True, unique=None, default=None)
     ui_key = Column(
         "ui_key", String(255), nullable=True, unique=None, default=None)
     ui_value = Column(
         "ui_value", String(255), nullable=True, unique=None, default=None)
     ui_active = Column(
         "ui_active", Boolean(), nullable=True, unique=None, default=True)
 
     def __repr__(self):
         return '<%s[%s]%s=>%s]>' % (self.__class__.__name__, self.ui_section,
                                     self.ui_key, self.ui_value)
 
 
 class RepoRhodeCodeSetting(Base, BaseModel):
     __tablename__ = 'repo_rhodecode_settings'
     __table_args__ = (
         UniqueConstraint(
             'app_settings_name', 'repository_id',
             name='uq_repo_rhodecode_setting_name_repo_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     repository_id = Column(
         "repository_id", Integer(), ForeignKey('repositories.repo_id'),
         nullable=False)
     app_settings_id = Column(
         "app_settings_id", Integer(), nullable=False, unique=True,
         default=None, primary_key=True)
     app_settings_name = Column(
         "app_settings_name", String(255), nullable=True, unique=None,
         default=None)
     _app_settings_value = Column(
         "app_settings_value", String(4096), nullable=True, unique=None,
         default=None)
     _app_settings_type = Column(
         "app_settings_type", String(255), nullable=True, unique=None,
         default=None)
 
     repository = relationship('Repository')
 
     def __init__(self, repository_id, key='', val='', type='unicode'):
         self.repository_id = repository_id
         self.app_settings_name = key
         self.app_settings_type = type
         self.app_settings_value = val
 
     @validates('_app_settings_value')
     def validate_settings_value(self, key, val):
         assert type(val) == unicode
         return val
 
     @hybrid_property
     def app_settings_value(self):
         v = self._app_settings_value
         type_ = self.app_settings_type
         SETTINGS_TYPES = RhodeCodeSetting.SETTINGS_TYPES
         converter = SETTINGS_TYPES.get(type_) or SETTINGS_TYPES['unicode']
         return converter(v)
 
     @app_settings_value.setter
     def app_settings_value(self, val):
         """
         Setter that will always make sure we use unicode in app_settings_value
 
         :param val:
         """
         self._app_settings_value = safe_unicode(val)
 
     @hybrid_property
     def app_settings_type(self):
         return self._app_settings_type
 
     @app_settings_type.setter
     def app_settings_type(self, val):
         SETTINGS_TYPES = RhodeCodeSetting.SETTINGS_TYPES
         if val not in SETTINGS_TYPES:
             raise Exception('type must be one of %s got %s'
                             % (SETTINGS_TYPES.keys(), val))
         self._app_settings_type = val
 
     def __unicode__(self):
         return u"<%s('%s:%s:%s[%s]')>" % (
             self.__class__.__name__, self.repository.repo_name,
             self.app_settings_name, self.app_settings_value,
             self.app_settings_type
         )
 
 
 class RepoRhodeCodeUi(Base, BaseModel):
     __tablename__ = 'repo_rhodecode_ui'
     __table_args__ = (
         UniqueConstraint(
             'repository_id', 'ui_section', 'ui_key',
             name='uq_repo_rhodecode_ui_repository_id_section_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     repository_id = Column(
         "repository_id", Integer(), ForeignKey('repositories.repo_id'),
         nullable=False)
     ui_id = Column(
         "ui_id", Integer(), nullable=False, unique=True, default=None,
         primary_key=True)
     ui_section = Column(
         "ui_section", String(255), nullable=True, unique=None, default=None)
     ui_key = Column(
         "ui_key", String(255), nullable=True, unique=None, default=None)
     ui_value = Column(
         "ui_value", String(255), nullable=True, unique=None, default=None)
     ui_active = Column(
         "ui_active", Boolean(), nullable=True, unique=None, default=True)
 
     repository = relationship('Repository')
 
     def __repr__(self):
         return '<%s[%s:%s]%s=>%s]>' % (
             self.__class__.__name__, self.repository.repo_name,
             self.ui_section, self.ui_key, self.ui_value)
 
 
 class User(Base, BaseModel):
     __tablename__ = 'users'
     __table_args__ = (
         UniqueConstraint('username'), UniqueConstraint('email'),
         Index('u_username_idx', 'username'),
         Index('u_email_idx', 'email'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     DEFAULT_USER = 'default'
     DEFAULT_USER_EMAIL = '[e-mail]'
     DEFAULT_GRAVATAR_URL = 'https://secure.gravatar.com/avatar/{md5email}?d=identicon&s={size}'
 
     user_id = Column("user_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     username = Column("username", String(255), nullable=True, unique=None, default=None)
     password = Column("password", String(255), nullable=True, unique=None, default=None)
     active = Column("active", Boolean(), nullable=True, unique=None, default=True)
     admin = Column("admin", Boolean(), nullable=True, unique=None, default=False)
     name = Column("firstname", String(255), nullable=True, unique=None, default=None)
     lastname = Column("lastname", String(255), nullable=True, unique=None, default=None)
     _email = Column("email", String(255), nullable=True, unique=None, default=None)
     last_login = Column("last_login", DateTime(timezone=False), nullable=True, unique=None, default=None)
     extern_type = Column("extern_type", String(255), nullable=True, unique=None, default=None)
     extern_name = Column("extern_name", String(255), nullable=True, unique=None, default=None)
     api_key = Column("api_key", String(255), nullable=True, unique=None, default=None)
     inherit_default_permissions = Column("inherit_default_permissions", Boolean(), nullable=False, unique=None, default=True)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     _user_data = Column("user_data", LargeBinary(), nullable=True)  # JSON data
 
     user_log = relationship('UserLog')
     user_perms = relationship('UserToPerm', primaryjoin="User.user_id==UserToPerm.user_id", cascade='all')
 
     repositories = relationship('Repository')
     repository_groups = relationship('RepoGroup')
     user_groups = relationship('UserGroup')
 
     user_followers = relationship('UserFollowing', primaryjoin='UserFollowing.follows_user_id==User.user_id', cascade='all')
     followings = relationship('UserFollowing', primaryjoin='UserFollowing.user_id==User.user_id', cascade='all')
 
     repo_to_perm = relationship('UserRepoToPerm', primaryjoin='UserRepoToPerm.user_id==User.user_id', cascade='all')
     repo_group_to_perm = relationship('UserRepoGroupToPerm', primaryjoin='UserRepoGroupToPerm.user_id==User.user_id', cascade='all')
     user_group_to_perm = relationship('UserUserGroupToPerm', primaryjoin='UserUserGroupToPerm.user_id==User.user_id', cascade='all')
 
     group_member = relationship('UserGroupMember', cascade='all')
 
     notifications = relationship('UserNotification', cascade='all')
     # notifications assigned to this user
     user_created_notifications = relationship('Notification', cascade='all')
     # comments created by this user
     user_comments = relationship('ChangesetComment', cascade='all')
     # user profile extra info
     user_emails = relationship('UserEmailMap', cascade='all')
     user_ip_map = relationship('UserIpMap', cascade='all')
     user_auth_tokens = relationship('UserApiKeys', cascade='all')
     # gists
     user_gists = relationship('Gist', cascade='all')
     # user pull requests
     user_pull_requests = relationship('PullRequest', cascade='all')
     # external identities
     extenal_identities = relationship(
         'ExternalIdentity',
         primaryjoin="User.user_id==ExternalIdentity.local_user_id",
         cascade='all')
 
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.user_id, self.username)
 
     @hybrid_property
     def email(self):
         return self._email
 
     @email.setter
     def email(self, val):
         self._email = val.lower() if val else None
 
     @property
     def firstname(self):
         # alias for future
         return self.name
 
     @property
     def emails(self):
         other = UserEmailMap.query().filter(UserEmailMap.user==self).all()
         return [self.email] + [x.email for x in other]
 
     @property
     def auth_tokens(self):
         return [self.api_key] + [x.api_key for x in self.extra_auth_tokens]
 
     @property
     def extra_auth_tokens(self):
         return UserApiKeys.query().filter(UserApiKeys.user == self).all()
 
     @property
     def feed_token(self):
         feed_tokens = UserApiKeys.query()\
             .filter(UserApiKeys.user == self)\
             .filter(UserApiKeys.role == UserApiKeys.ROLE_FEED)\
             .all()
         if feed_tokens:
             return feed_tokens[0].api_key
         else:
             # use the main token so we don't end up with nothing...
             return self.api_key
 
     @classmethod
     def extra_valid_auth_tokens(cls, user, role=None):
         tokens = UserApiKeys.query().filter(UserApiKeys.user == user)\
                 .filter(or_(UserApiKeys.expires == -1,
                             UserApiKeys.expires >= time.time()))
         if role:
             tokens = tokens.filter(or_(UserApiKeys.role == role,
                                        UserApiKeys.role == UserApiKeys.ROLE_ALL))
         return tokens.all()
 
     @property
     def ip_addresses(self):
         ret = UserIpMap.query().filter(UserIpMap.user == self).all()
         return [x.ip_addr for x in ret]
 
     @property
     def username_and_name(self):
         return '%s (%s %s)' % (self.username, self.firstname, self.lastname)
 
     @property
     def username_or_name_or_email(self):
         full_name = self.full_name if self.full_name is not ' ' else None
         return self.username or full_name or self.email
 
     @property
     def full_name(self):
         return '%s %s' % (self.firstname, self.lastname)
 
     @property
     def full_name_or_username(self):
         return ('%s %s' % (self.firstname, self.lastname)
                 if (self.firstname and self.lastname) else self.username)
 
     @property
     def full_contact(self):
         return '%s %s <%s>' % (self.firstname, self.lastname, self.email)
 
     @property
     def short_contact(self):
         return '%s %s' % (self.firstname, self.lastname)
 
     @property
     def is_admin(self):
         return self.admin
 
     @property
     def AuthUser(self):
         """
         Returns instance of AuthUser for this user
         """
         from rhodecode.lib.auth import AuthUser
         return AuthUser(user_id=self.user_id, api_key=self.api_key,
                         username=self.username)
 
     @hybrid_property
     def user_data(self):
         if not self._user_data:
             return {}
 
         try:
             return json.loads(self._user_data)
         except TypeError:
             return {}
 
     @user_data.setter
     def user_data(self, val):
         if not isinstance(val, dict):
             raise Exception('user_data must be dict, got %s' % type(val))
         try:
             self._user_data = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
 
     @classmethod
     def get_by_username(cls, username, case_insensitive=False,
                         cache=False, identity_cache=False):
         session = Session()
 
         if case_insensitive:
             q = cls.query().filter(
                 func.lower(cls.username) == func.lower(username))
         else:
             q = cls.query().filter(cls.username == username)
 
         if cache:
             if identity_cache:
                 val = cls.identity_cache(session, 'username', username)
                 if val:
                     return val
             else:
                 q = q.options(
                     FromCache("sql_cache_short",
                               "get_user_by_name_%s" % _hash_key(username)))
 
         return q.scalar()
 
     @classmethod
     def get_by_auth_token(cls, auth_token, cache=False, fallback=True):
         q = cls.query().filter(cls.api_key == auth_token)
 
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_auth_token_%s" % auth_token))
         res = q.scalar()
 
         if fallback and not res:
             #fallback to additional keys
             _res = UserApiKeys.query()\
                 .filter(UserApiKeys.api_key == auth_token)\
                 .filter(or_(UserApiKeys.expires == -1,
                             UserApiKeys.expires >= time.time()))\
                 .first()
             if _res:
                 res = _res.user
         return res
 
     @classmethod
     def get_by_email(cls, email, case_insensitive=False, cache=False):
 
         if case_insensitive:
             q = cls.query().filter(func.lower(cls.email) == func.lower(email))
 
         else:
             q = cls.query().filter(cls.email == email)
 
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_email_key_%s" % _hash_key(email)))
 
         ret = q.scalar()
         if ret is None:
             q = UserEmailMap.query()
             # try fetching in alternate email map
             if case_insensitive:
                 q = q.filter(func.lower(UserEmailMap.email) == func.lower(email))
             else:
                 q = q.filter(UserEmailMap.email == email)
             q = q.options(joinedload(UserEmailMap.user))
             if cache:
                 q = q.options(FromCache("sql_cache_short",
                                         "get_email_map_key_%s" % email))
             ret = getattr(q.scalar(), 'user', None)
 
         return ret
 
     @classmethod
     def get_from_cs_author(cls, author):
         """
         Tries to get User objects out of commit author string
 
         :param author:
         """
         from rhodecode.lib.helpers import email, author_name
         # Valid email in the attribute passed, see if they're in the system
         _email = email(author)
         if _email:
             user = cls.get_by_email(_email, case_insensitive=True)
             if user:
                 return user
         # Maybe we can match by username?
         _author = author_name(author)
         user = cls.get_by_username(_author, case_insensitive=True)
         if user:
             return user
 
     def update_userdata(self, **kwargs):
         usr = self
         old = usr.user_data
         old.update(**kwargs)
         usr.user_data = old
         Session().add(usr)
         log.debug('updated userdata with ', kwargs)
 
     def update_lastlogin(self):
         """Update user lastlogin"""
         self.last_login = datetime.datetime.now()
         Session().add(self)
         log.debug('updated user %s lastlogin', self.username)
 
     def update_lastactivity(self):
         """Update user lastactivity"""
         usr = self
         old = usr.user_data
         old.update({'last_activity': time.time()})
         usr.user_data = old
         Session().add(usr)
         log.debug('updated user %s lastactivity', usr.username)
 
     def update_password(self, new_password, change_api_key=False):
         from rhodecode.lib.auth import get_crypt_password,generate_auth_token
 
         self.password = get_crypt_password(new_password)
         if change_api_key:
             self.api_key = generate_auth_token(self.username)
         Session().add(self)
 
     @classmethod
     def get_first_super_admin(cls):
         user = User.query().filter(User.admin == true()).first()
         if user is None:
             raise Exception('FATAL: Missing administrative account!')
         return user
 
     @classmethod
     def get_all_super_admins(cls):
         """
         Returns all admin accounts sorted by username
         """
         return User.query().filter(User.admin == true())\
             .order_by(User.username.asc()).all()
 
     @classmethod
     def get_default_user(cls, cache=False):
         user = User.get_by_username(User.DEFAULT_USER, cache=cache)
         if user is None:
             raise Exception('FATAL: Missing default account!')
         return user
 
     def _get_default_perms(self, user, suffix=''):
         from rhodecode.model.permission import PermissionModel
         return PermissionModel().get_default_perms(user.user_perms, suffix)
 
     def get_default_perms(self, suffix=''):
         return self._get_default_perms(self, suffix)
 
     def get_api_data(self, include_secrets=False, details='full'):
         """
         Common function for generating user related data for API
 
         :param include_secrets: By default secrets in the API data will be replaced
            by a placeholder value to prevent exposing this data by accident. In case
            this data shall be exposed, set this flag to ``True``.
 
         :param details: details can be 'basic|full' basic gives only a subset of
            the available user information that includes user_id, name and emails.
         """
         user = self
         user_data = self.user_data
         data = {
             'user_id': user.user_id,
             'username': user.username,
             'firstname': user.name,
             'lastname': user.lastname,
             'email': user.email,
             'emails': user.emails,
         }
         if details == 'basic':
             return data
 
         api_key_length = 40
         api_key_replacement = '*' * api_key_length
 
         extras = {
             'api_key': api_key_replacement,
             'api_keys': [api_key_replacement],
             'active': user.active,
             'admin': user.admin,
             'extern_type': user.extern_type,
             'extern_name': user.extern_name,
             'last_login': user.last_login,
             'ip_addresses': user.ip_addresses,
             'language': user_data.get('language')
         }
         data.update(extras)
 
         if include_secrets:
             data['api_key'] = user.api_key
             data['api_keys'] = user.auth_tokens
         return data
 
     def __json__(self):
         data = {
             'full_name': self.full_name,
             'full_name_or_username': self.full_name_or_username,
             'short_contact': self.short_contact,
             'full_contact': self.full_contact,
         }
         data.update(self.get_api_data())
         return data
 
 
 class UserApiKeys(Base, BaseModel):
     __tablename__ = 'user_api_keys'
     __table_args__ = (
         Index('uak_api_key_idx', 'api_key'),
         Index('uak_api_key_expires_idx', 'api_key', 'expires'),
         UniqueConstraint('api_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     __mapper_args__ = {}
 
     # ApiKey role
     ROLE_ALL = 'token_role_all'
     ROLE_HTTP = 'token_role_http'
     ROLE_VCS = 'token_role_vcs'
     ROLE_API = 'token_role_api'
     ROLE_FEED = 'token_role_feed'
     ROLES = [ROLE_ALL, ROLE_HTTP, ROLE_VCS, ROLE_API, ROLE_FEED]
 
     user_api_key_id = Column("user_api_key_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
     api_key = Column("api_key", String(255), nullable=False, unique=True)
     description = Column('description', UnicodeText().with_variant(UnicodeText(1024), 'mysql'))
     expires = Column('expires', Float(53), nullable=False)
     role = Column('role', String(255), nullable=True)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
 
     user = relationship('User', lazy='joined')
 
     @classmethod
     def _get_role_name(cls, role):
         return {
             cls.ROLE_ALL: _('all'),
             cls.ROLE_HTTP: _('http/web interface'),
             cls.ROLE_VCS: _('vcs (git/hg/svn protocol)'),
             cls.ROLE_API: _('api calls'),
             cls.ROLE_FEED: _('feed access'),
         }.get(role, role)
 
     @property
     def expired(self):
         if self.expires == -1:
             return False
         return time.time() > self.expires
 
     @property
     def role_humanized(self):
         return self._get_role_name(self.role)
 
 
 class UserEmailMap(Base, BaseModel):
     __tablename__ = 'user_email_map'
     __table_args__ = (
         Index('uem_email_idx', 'email'),
         UniqueConstraint('email'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     __mapper_args__ = {}
 
     email_id = Column("email_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
     _email = Column("email", String(255), nullable=True, unique=False, default=None)
     user = relationship('User', lazy='joined')
 
     @validates('_email')
     def validate_email(self, key, email):
         # check if this email is not main one
         main_email = Session().query(User).filter(User.email == email).scalar()
         if main_email is not None:
             raise AttributeError('email %s is present is user table' % email)
         return email
 
     @hybrid_property
     def email(self):
         return self._email
 
     @email.setter
     def email(self, val):
         self._email = val.lower() if val else None
 
 
 class UserIpMap(Base, BaseModel):
     __tablename__ = 'user_ip_map'
     __table_args__ = (
         UniqueConstraint('user_id', 'ip_addr'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     __mapper_args__ = {}
 
     ip_id = Column("ip_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
     ip_addr = Column("ip_addr", String(255), nullable=True, unique=False, default=None)
     active = Column("active", Boolean(), nullable=True, unique=None, default=True)
     description = Column("description", String(10000), nullable=True, unique=None, default=None)
     user = relationship('User', lazy='joined')
 
     @classmethod
     def _get_ip_range(cls, ip_addr):
         net = ipaddress.ip_network(ip_addr, strict=False)
         return [str(net.network_address), str(net.broadcast_address)]
 
     def __json__(self):
         return {
           'ip_addr': self.ip_addr,
           'ip_range': self._get_ip_range(self.ip_addr),
         }
 
     def __unicode__(self):
         return u"<%s('user_id:%s=>%s')>" % (self.__class__.__name__,
                                             self.user_id, self.ip_addr)
 
 class UserLog(Base, BaseModel):
     __tablename__ = 'user_logs'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     user_log_id = Column("user_log_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
     username = Column("username", String(255), nullable=True, unique=None, default=None)
     repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=True)
     repository_name = Column("repository_name", String(255), nullable=True, unique=None, default=None)
     user_ip = Column("user_ip", String(255), nullable=True, unique=None, default=None)
     action = Column("action", Text().with_variant(Text(1200000), 'mysql'), nullable=True, unique=None, default=None)
     action_date = Column("action_date", DateTime(timezone=False), nullable=True, unique=None, default=None)
 
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.repository_name,
                                       self.action)
 
     @property
     def action_as_day(self):
         return datetime.date(*self.action_date.timetuple()[:3])
 
     user = relationship('User')
     repository = relationship('Repository', cascade='')
 
 
 class UserGroup(Base, BaseModel):
     __tablename__ = 'users_groups'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     users_group_id = Column("users_group_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     users_group_name = Column("users_group_name", String(255), nullable=False, unique=True, default=None)
     user_group_description = Column("user_group_description", String(10000), nullable=True, unique=None, default=None)
     users_group_active = Column("users_group_active", Boolean(), nullable=True, unique=None, default=None)
     inherit_default_permissions = Column("users_group_inherit_default_permissions", Boolean(), nullable=False, unique=None, default=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=False, default=None)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     _group_data = Column("group_data", LargeBinary(), nullable=True)  # JSON data
 
     members = relationship('UserGroupMember', cascade="all, delete, delete-orphan", lazy="joined")
     users_group_to_perm = relationship('UserGroupToPerm', cascade='all')
     users_group_repo_to_perm = relationship('UserGroupRepoToPerm', cascade='all')
     users_group_repo_group_to_perm = relationship('UserGroupRepoGroupToPerm', cascade='all')
     user_user_group_to_perm = relationship('UserUserGroupToPerm', cascade='all')
     user_group_user_group_to_perm = relationship('UserGroupUserGroupToPerm ', primaryjoin="UserGroupUserGroupToPerm.target_user_group_id==UserGroup.users_group_id", cascade='all')
 
     user = relationship('User')
 
     @hybrid_property
     def group_data(self):
         if not self._group_data:
             return {}
 
         try:
             return json.loads(self._group_data)
         except TypeError:
             return {}
 
     @group_data.setter
     def group_data(self, val):
         try:
             self._group_data = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
 
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                       self.users_group_id,
                                       self.users_group_name)
 
     @classmethod
     def get_by_group_name(cls, group_name, cache=False,
                           case_insensitive=False):
         if case_insensitive:
             q = cls.query().filter(func.lower(cls.users_group_name) ==
                                    func.lower(group_name))
 
         else:
             q = cls.query().filter(cls.users_group_name == group_name)
         if cache:
             q = q.options(FromCache(
                             "sql_cache_short",
                             "get_group_%s" % _hash_key(group_name)))
         return q.scalar()
 
     @classmethod
     def get(cls, user_group_id, cache=False):
         user_group = cls.query()
         if cache:
             user_group = user_group.options(FromCache("sql_cache_short",
                                     "get_users_group_%s" % user_group_id))
         return user_group.get(user_group_id)
 
     def permissions(self, with_admins=True, with_owner=True):
         q = UserUserGroupToPerm.query().filter(UserUserGroupToPerm.user_group == self)
         q = q.options(joinedload(UserUserGroupToPerm.user_group),
                       joinedload(UserUserGroupToPerm.user),
                       joinedload(UserUserGroupToPerm.permission),)
 
         # get owners and admins and permissions. We do a trick of re-writing
         # objects from sqlalchemy to named-tuples due to sqlalchemy session
         # has a global reference and changing one object propagates to all
         # others. This means if admin is also an owner admin_row that change
         # would propagate to both objects
         perm_rows = []
         for _usr in q.all():
             usr = AttributeDict(_usr.user.get_dict())
             usr.permission = _usr.permission.permission_name
             perm_rows.append(usr)
 
         # filter the perm rows by 'default' first and then sort them by
         # admin,write,read,none permissions sorted again alphabetically in
         # each group
         perm_rows = sorted(perm_rows, key=display_sort)
 
         _admin_perm = 'usergroup.admin'
         owner_row = []
         if with_owner:
             usr = AttributeDict(self.user.get_dict())
             usr.owner_row = True
             usr.permission = _admin_perm
             owner_row.append(usr)
 
         super_admin_rows = []
         if with_admins:
             for usr in User.get_all_super_admins():
                 # if this admin is also owner, don't double the record
                 if usr.user_id == owner_row[0].user_id:
                     owner_row[0].admin_row = True
                 else:
                     usr = AttributeDict(usr.get_dict())
                     usr.admin_row = True
                     usr.permission = _admin_perm
                     super_admin_rows.append(usr)
 
         return super_admin_rows + owner_row + perm_rows
 
     def permission_user_groups(self):
         q = UserGroupUserGroupToPerm.query().filter(UserGroupUserGroupToPerm.target_user_group == self)
         q = q.options(joinedload(UserGroupUserGroupToPerm.user_group),
                       joinedload(UserGroupUserGroupToPerm.target_user_group),
                       joinedload(UserGroupUserGroupToPerm.permission),)
 
         perm_rows = []
         for _user_group in q.all():
             usr = AttributeDict(_user_group.user_group.get_dict())
             usr.permission = _user_group.permission.permission_name
             perm_rows.append(usr)
 
         return perm_rows
 
     def _get_default_perms(self, user_group, suffix=''):
         from rhodecode.model.permission import PermissionModel
         return PermissionModel().get_default_perms(user_group.users_group_to_perm, suffix)
 
     def get_default_perms(self, suffix=''):
         return self._get_default_perms(self, suffix)
 
     def get_api_data(self, with_group_members=True, include_secrets=False):
         """
         :param include_secrets: See :meth:`User.get_api_data`, this parameter is
            basically forwarded.
 
         """
         user_group = self
 
         data = {
             'users_group_id': user_group.users_group_id,
             'group_name': user_group.users_group_name,
             'group_description': user_group.user_group_description,
             'active': user_group.users_group_active,
             'owner': user_group.user.username,
         }
         if with_group_members:
             users = []
             for user in user_group.members:
                 user = user.user
                 users.append(user.get_api_data(include_secrets=include_secrets))
             data['users'] = users
 
         return data
 
 
 class UserGroupMember(Base, BaseModel):
     __tablename__ = 'users_groups_members'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     users_group_member_id = Column("users_group_member_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
 
     user = relationship('User', lazy='joined')
     users_group = relationship('UserGroup')
 
     def __init__(self, gr_id='', u_id=''):
         self.users_group_id = gr_id
         self.user_id = u_id
 
 
 class RepositoryField(Base, BaseModel):
     __tablename__ = 'repositories_fields'
     __table_args__ = (
         UniqueConstraint('repository_id', 'field_key'),  # no-multi field
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     PREFIX = 'ex_'  # prefix used in form to not conflict with already existing fields
 
     repo_field_id = Column("repo_field_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=None, default=None)
     field_key = Column("field_key", String(250))
     field_label = Column("field_label", String(1024), nullable=False)
     field_value = Column("field_value", String(10000), nullable=False)
     field_desc = Column("field_desc", String(1024), nullable=False)
     field_type = Column("field_type", String(255), nullable=False, unique=None)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
 
     repository = relationship('Repository')
 
     @property
     def field_key_prefixed(self):
         return 'ex_%s' % self.field_key
 
     @classmethod
     def un_prefix_key(cls, key):
         if key.startswith(cls.PREFIX):
             return key[len(cls.PREFIX):]
         return key
 
     @classmethod
     def get_by_key_name(cls, key, repo):
         row = cls.query()\
                 .filter(cls.repository == repo)\
                 .filter(cls.field_key == key).scalar()
         return row
 
 
 class Repository(Base, BaseModel):
     __tablename__ = 'repositories'
     __table_args__ = (
         Index('r_repo_name_idx', 'repo_name', mysql_length=255),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     DEFAULT_CLONE_URI = '{scheme}://{user}@{netloc}/{repo}'
     DEFAULT_CLONE_URI_ID = '{scheme}://{user}@{netloc}/_{repoid}'
 
     STATE_CREATED = 'repo_state_created'
     STATE_PENDING = 'repo_state_pending'
     STATE_ERROR = 'repo_state_error'
 
     LOCK_AUTOMATIC = 'lock_auto'
     LOCK_API = 'lock_api'
     LOCK_WEB = 'lock_web'
     LOCK_PULL = 'lock_pull'
 
     NAME_SEP = URL_SEP
 
     repo_id = Column(
         "repo_id", Integer(), nullable=False, unique=True, default=None,
         primary_key=True)
     _repo_name = Column(
         "repo_name", Text(), nullable=False, default=None)
     _repo_name_hash = Column(
         "repo_name_hash", String(255), nullable=False, unique=True)
     repo_state = Column("repo_state", String(255), nullable=True)
 
     clone_uri = Column(
         "clone_uri", EncryptedTextValue(), nullable=True, unique=False,
         default=None)
     repo_type = Column(
         "repo_type", String(255), nullable=False, unique=False, default=None)
     user_id = Column(
         "user_id", Integer(), ForeignKey('users.user_id'), nullable=False,
         unique=False, default=None)
     private = Column(
         "private", Boolean(), nullable=True, unique=None, default=None)
     enable_statistics = Column(
         "statistics", Boolean(), nullable=True, unique=None, default=True)
     enable_downloads = Column(
         "downloads", Boolean(), nullable=True, unique=None, default=True)
     description = Column(
         "description", String(10000), nullable=True, unique=None, default=None)
     created_on = Column(
         'created_on', DateTime(timezone=False), nullable=True, unique=None,
         default=datetime.datetime.now)
     updated_on = Column(
         'updated_on', DateTime(timezone=False), nullable=True, unique=None,
         default=datetime.datetime.now)
     _landing_revision = Column(
         "landing_revision", String(255), nullable=False, unique=False,
         default=None)
     enable_locking = Column(
         "enable_locking", Boolean(), nullable=False, unique=None,
         default=False)
     _locked = Column(
         "locked", String(255), nullable=True, unique=False, default=None)
     _changeset_cache = Column(
         "changeset_cache", LargeBinary(), nullable=True)  # JSON data
 
     fork_id = Column(
         "fork_id", Integer(), ForeignKey('repositories.repo_id'),
         nullable=True, unique=False, default=None)
     group_id = Column(
         "group_id", Integer(), ForeignKey('groups.group_id'), nullable=True,
         unique=False, default=None)
 
     user = relationship('User', lazy='joined')
     fork = relationship('Repository', remote_side=repo_id, lazy='joined')
     group = relationship('RepoGroup', lazy='joined')
     repo_to_perm = relationship(
         'UserRepoToPerm', cascade='all',
         order_by='UserRepoToPerm.repo_to_perm_id')
     users_group_to_perm = relationship('UserGroupRepoToPerm', cascade='all')
     stats = relationship('Statistics', cascade='all', uselist=False)
 
     followers = relationship(
         'UserFollowing',
         primaryjoin='UserFollowing.follows_repo_id==Repository.repo_id',
         cascade='all')
     extra_fields = relationship(
         'RepositoryField', cascade="all, delete, delete-orphan")
     logs = relationship('UserLog')
     comments = relationship(
         'ChangesetComment', cascade="all, delete, delete-orphan")
     pull_requests_source = relationship(
         'PullRequest',
         primaryjoin='PullRequest.source_repo_id==Repository.repo_id',
         cascade="all, delete, delete-orphan")
     pull_requests_target = relationship(
         'PullRequest',
         primaryjoin='PullRequest.target_repo_id==Repository.repo_id',
         cascade="all, delete, delete-orphan")
     ui = relationship('RepoRhodeCodeUi', cascade="all")
     settings = relationship('RepoRhodeCodeSetting', cascade="all")
     integrations = relationship('Integration',
                                 cascade="all, delete, delete-orphan")
 
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (self.__class__.__name__, self.repo_id,
                                    safe_unicode(self.repo_name))
 
     @hybrid_property
     def landing_rev(self):
         # always should return [rev_type, rev]
         if self._landing_revision:
             _rev_info = self._landing_revision.split(':')
             if len(_rev_info) < 2:
                 _rev_info.insert(0, 'rev')
             return [_rev_info[0], _rev_info[1]]
         return [None, None]
 
     @landing_rev.setter
     def landing_rev(self, val):
         if ':' not in val:
             raise ValueError('value must be delimited with `:` and consist '
                              'of <rev_type>:<rev>, got %s instead' % val)
         self._landing_revision = val
 
     @hybrid_property
     def locked(self):
         if self._locked:
             user_id, timelocked, reason = self._locked.split(':')
             lock_values = int(user_id), timelocked, reason
         else:
             lock_values = [None, None, None]
         return lock_values
 
     @locked.setter
     def locked(self, val):
         if val and isinstance(val, (list, tuple)):
             self._locked = ':'.join(map(str, val))
         else:
             self._locked = None
 
     @hybrid_property
     def changeset_cache(self):
         from rhodecode.lib.vcs.backends.base import EmptyCommit
         dummy = EmptyCommit().__json__()
         if not self._changeset_cache:
             return dummy
         try:
             return json.loads(self._changeset_cache)
         except TypeError:
             return dummy
         except Exception:
             log.error(traceback.format_exc())
             return dummy
 
     @changeset_cache.setter
     def changeset_cache(self, val):
         try:
             self._changeset_cache = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
 
     @hybrid_property
     def repo_name(self):
         return self._repo_name
 
     @repo_name.setter
     def repo_name(self, value):
         self._repo_name = value
         self._repo_name_hash = hashlib.sha1(safe_str(value)).hexdigest()
 
     @classmethod
     def normalize_repo_name(cls, repo_name):
         """
         Normalizes os specific repo_name to the format internally stored inside
         database using URL_SEP
 
         :param cls:
         :param repo_name:
         """
         return cls.NAME_SEP.join(repo_name.split(os.sep))
 
     @classmethod
     def get_by_repo_name(cls, repo_name, cache=False, identity_cache=False):
         session = Session()
         q = session.query(cls).filter(cls.repo_name == repo_name)
 
         if cache:
             if identity_cache:
                 val = cls.identity_cache(session, 'repo_name', repo_name)
                 if val:
                     return val
             else:
                 q = q.options(
                     FromCache("sql_cache_short",
                               "get_repo_by_name_%s" % _hash_key(repo_name)))
 
         return q.scalar()
 
     @classmethod
     def get_by_full_path(cls, repo_full_path):
         repo_name = repo_full_path.split(cls.base_path(), 1)[-1]
         repo_name = cls.normalize_repo_name(repo_name)
         return cls.get_by_repo_name(repo_name.strip(URL_SEP))
 
     @classmethod
     def get_repo_forks(cls, repo_id):
         return cls.query().filter(Repository.fork_id == repo_id)
 
     @classmethod
     def base_path(cls):
         """
         Returns base path when all repos are stored
 
         :param cls:
         """
         q = Session().query(RhodeCodeUi)\
             .filter(RhodeCodeUi.ui_key == cls.NAME_SEP)
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return q.one().ui_value
 
     @classmethod
     def is_valid(cls, repo_name):
         """
         returns True if given repo name is a valid filesystem repository
 
         :param cls:
         :param repo_name:
         """
         from rhodecode.lib.utils import is_valid_repo
 
         return is_valid_repo(repo_name, cls.base_path())
 
     @classmethod
     def get_all_repos(cls, user_id=Optional(None), group_id=Optional(None),
                       case_insensitive=True):
         q = Repository.query()
 
         if not isinstance(user_id, Optional):
             q = q.filter(Repository.user_id == user_id)
 
         if not isinstance(group_id, Optional):
             q = q.filter(Repository.group_id == group_id)
 
         if case_insensitive:
             q = q.order_by(func.lower(Repository.repo_name))
         else:
             q = q.order_by(Repository.repo_name)
         return q.all()
 
     @property
     def forks(self):
         """
         Return forks of this repo
         """
         return Repository.get_repo_forks(self.repo_id)
 
     @property
     def parent(self):
         """
         Returns fork parent
         """
         return self.fork
 
     @property
     def just_name(self):
         return self.repo_name.split(self.NAME_SEP)[-1]
 
     @property
     def groups_with_parents(self):
         groups = []
         if self.group is None:
             return groups
 
         cur_gr = self.group
         groups.insert(0, cur_gr)
         while 1:
             gr = getattr(cur_gr, 'parent_group', None)
             cur_gr = cur_gr.parent_group
             if gr is None:
                 break
             groups.insert(0, gr)
 
         return groups
 
     @property
     def groups_and_repo(self):
         return self.groups_with_parents, self
 
     @LazyProperty
     def repo_path(self):
         """
         Returns base full path for that repository means where it actually
         exists on a filesystem
         """
         q = Session().query(RhodeCodeUi).filter(
             RhodeCodeUi.ui_key == self.NAME_SEP)
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return q.one().ui_value
 
     @property
     def repo_full_path(self):
         p = [self.repo_path]
         # we need to split the name by / since this is how we store the
         # names in the database, but that eventually needs to be converted
         # into a valid system path
         p += self.repo_name.split(self.NAME_SEP)
         return os.path.join(*map(safe_unicode, p))
 
     @property
     def cache_keys(self):
         """
         Returns associated cache keys for that repo
         """
         return CacheKey.query()\
             .filter(CacheKey.cache_args == self.repo_name)\
             .order_by(CacheKey.cache_key)\
             .all()
 
     def get_new_name(self, repo_name):
         """
         returns new full repository name based on assigned group and new new
 
         :param group_name:
         """
         path_prefix = self.group.full_path_splitted if self.group else []
         return self.NAME_SEP.join(path_prefix + [repo_name])
 
     @property
     def _config(self):
         """
         Returns db based config object.
         """
         from rhodecode.lib.utils import make_db_config
         return make_db_config(clear_session=False, repo=self)
 
     def permissions(self, with_admins=True, with_owner=True):
         q = UserRepoToPerm.query().filter(UserRepoToPerm.repository == self)
         q = q.options(joinedload(UserRepoToPerm.repository),
                       joinedload(UserRepoToPerm.user),
                       joinedload(UserRepoToPerm.permission),)
 
         # get owners and admins and permissions. We do a trick of re-writing
         # objects from sqlalchemy to named-tuples due to sqlalchemy session
         # has a global reference and changing one object propagates to all
         # others. This means if admin is also an owner admin_row that change
         # would propagate to both objects
         perm_rows = []
         for _usr in q.all():
             usr = AttributeDict(_usr.user.get_dict())
             usr.permission = _usr.permission.permission_name
             perm_rows.append(usr)
 
         # filter the perm rows by 'default' first and then sort them by
         # admin,write,read,none permissions sorted again alphabetically in
         # each group
         perm_rows = sorted(perm_rows, key=display_sort)
 
         _admin_perm = 'repository.admin'
         owner_row = []
         if with_owner:
             usr = AttributeDict(self.user.get_dict())
             usr.owner_row = True
             usr.permission = _admin_perm
             owner_row.append(usr)
 
         super_admin_rows = []
         if with_admins:
             for usr in User.get_all_super_admins():
                 # if this admin is also owner, don't double the record
                 if usr.user_id == owner_row[0].user_id:
                     owner_row[0].admin_row = True
                 else:
                     usr = AttributeDict(usr.get_dict())
                     usr.admin_row = True
                     usr.permission = _admin_perm
                     super_admin_rows.append(usr)
 
         return super_admin_rows + owner_row + perm_rows
 
     def permission_user_groups(self):
         q = UserGroupRepoToPerm.query().filter(
             UserGroupRepoToPerm.repository == self)
         q = q.options(joinedload(UserGroupRepoToPerm.repository),
                       joinedload(UserGroupRepoToPerm.users_group),
                       joinedload(UserGroupRepoToPerm.permission),)
 
         perm_rows = []
         for _user_group in q.all():
             usr = AttributeDict(_user_group.users_group.get_dict())
             usr.permission = _user_group.permission.permission_name
             perm_rows.append(usr)
 
         return perm_rows
 
     def get_api_data(self, include_secrets=False):
         """
         Common function for generating repo api data
 
         :param include_secrets: See :meth:`User.get_api_data`.
 
         """
         # TODO: mikhail: Here there is an anti-pattern, we probably need to
         # move this methods on models level.
         from rhodecode.model.settings import SettingsModel
 
         repo = self
         _user_id, _time, _reason = self.locked
 
         data = {
             'repo_id': repo.repo_id,
             'repo_name': repo.repo_name,
             'repo_type': repo.repo_type,
             'clone_uri': repo.clone_uri or '',
             'url': url('summary_home', repo_name=self.repo_name, qualified=True),
             'private': repo.private,
             'created_on': repo.created_on,
             'description': repo.description,
             'landing_rev': repo.landing_rev,
             'owner': repo.user.username,
             'fork_of': repo.fork.repo_name if repo.fork else None,
             'enable_statistics': repo.enable_statistics,
             'enable_locking': repo.enable_locking,
             'enable_downloads': repo.enable_downloads,
             'last_changeset': repo.changeset_cache,
             'locked_by': User.get(_user_id).get_api_data(
                 include_secrets=include_secrets) if _user_id else None,
             'locked_date': time_to_datetime(_time) if _time else None,
             'lock_reason': _reason if _reason else None,
         }
 
         # TODO: mikhail: should be per-repo settings here
         rc_config = SettingsModel().get_all_settings()
         repository_fields = str2bool(
             rc_config.get('rhodecode_repository_fields'))
         if repository_fields:
             for f in self.extra_fields:
                 data[f.field_key_prefixed] = f.field_value
 
         return data
 
     @classmethod
     def lock(cls, repo, user_id, lock_time=None, lock_reason=None):
         if not lock_time:
             lock_time = time.time()
         if not lock_reason:
             lock_reason = cls.LOCK_AUTOMATIC
         repo.locked = [user_id, lock_time, lock_reason]
         Session().add(repo)
         Session().commit()
 
     @classmethod
     def unlock(cls, repo):
         repo.locked = None
         Session().add(repo)
         Session().commit()
 
     @classmethod
     def getlock(cls, repo):
         return repo.locked
 
     def is_user_lock(self, user_id):
         if self.lock[0]:
             lock_user_id = safe_int(self.lock[0])
             user_id = safe_int(user_id)
             # both are ints, and they are equal
             return all([lock_user_id, user_id]) and lock_user_id == user_id
 
         return False
 
     def get_locking_state(self, action, user_id, only_when_enabled=True):
         """
         Checks locking on this repository, if locking is enabled and lock is
         present returns a tuple of make_lock, locked, locked_by.
         make_lock can have 3 states None (do nothing) True, make lock
         False release lock, This value is later propagated to hooks, which
         do the locking. Think about this as signals passed to hooks what to do.
 
         """
         # TODO: johbo: This is part of the business logic and should be moved
         # into the RepositoryModel.
 
         if action not in ('push', 'pull'):
             raise ValueError("Invalid action value: %s" % repr(action))
 
         # defines if locked error should be thrown to user
         currently_locked = False
         # defines if new lock should be made, tri-state
         make_lock = None
         repo = self
         user = User.get(user_id)
 
         lock_info = repo.locked
 
         if repo and (repo.enable_locking or not only_when_enabled):
             if action == 'push':
                 # check if it's already locked !, if it is compare users
                 locked_by_user_id = lock_info[0]
                 if user.user_id == locked_by_user_id:
                     log.debug(
                         'Got `push` action from user %s, now unlocking', user)
                     # unlock if we have push from user who locked
                     make_lock = False
                 else:
                     # we're not the same user who locked, ban with
                     # code defined in settings (default is 423 HTTP Locked) !
                     log.debug('Repo %s is currently locked by %s', repo, user)
                     currently_locked = True
             elif action == 'pull':
                 # [0] user [1] date
                 if lock_info[0] and lock_info[1]:
                     log.debug('Repo %s is currently locked by %s', repo, user)
                     currently_locked = True
                 else:
                     log.debug('Setting lock on repo %s by %s', repo, user)
                     make_lock = True
 
         else:
             log.debug('Repository %s do not have locking enabled', repo)
 
         log.debug('FINAL locking values make_lock:%s,locked:%s,locked_by:%s',
                   make_lock, currently_locked, lock_info)
 
         from rhodecode.lib.auth import HasRepoPermissionAny
         perm_check = HasRepoPermissionAny('repository.write', 'repository.admin')
         if make_lock and not perm_check(repo_name=repo.repo_name, user=user):
             # if we don't have at least write permission we cannot make a lock
             log.debug('lock state reset back to FALSE due to lack '
                       'of at least read permission')
             make_lock = False
 
         return make_lock, currently_locked, lock_info
 
     @property
     def last_db_change(self):
         return self.updated_on
 
     @property
     def clone_uri_hidden(self):
         clone_uri = self.clone_uri
         if clone_uri:
             import urlobject
             url_obj = urlobject.URLObject(clone_uri)
             if url_obj.password:
                 clone_uri = url_obj.with_password('*****')
         return clone_uri
 
     def clone_url(self, **override):
         qualified_home_url = url('home', qualified=True)
 
         uri_tmpl = None
         if 'with_id' in override:
             uri_tmpl = self.DEFAULT_CLONE_URI_ID
             del override['with_id']
 
         if 'uri_tmpl' in override:
             uri_tmpl = override['uri_tmpl']
             del override['uri_tmpl']
 
         # we didn't override our tmpl from **overrides
         if not uri_tmpl:
             uri_tmpl = self.DEFAULT_CLONE_URI
             try:
                 from pylons import tmpl_context as c
                 uri_tmpl = c.clone_uri_tmpl
             except Exception:
                 # in any case if we call this outside of request context,
                 # ie, not having tmpl_context set up
                 pass
 
         return get_clone_url(uri_tmpl=uri_tmpl,
                              qualifed_home_url=qualified_home_url,
                              repo_name=self.repo_name,
                              repo_id=self.repo_id, **override)
 
     def set_state(self, state):
         self.repo_state = state
         Session().add(self)
     #==========================================================================
     # SCM PROPERTIES
     #==========================================================================
 
     def get_commit(self, commit_id=None, commit_idx=None, pre_load=None):
         return get_commit_safe(
             self.scm_instance(), commit_id, commit_idx, pre_load=pre_load)
 
     def get_changeset(self, rev=None, pre_load=None):
         warnings.warn("Use get_commit", DeprecationWarning)
         commit_id = None
         commit_idx = None
         if isinstance(rev, basestring):
             commit_id = rev
         else:
             commit_idx = rev
         return self.get_commit(commit_id=commit_id, commit_idx=commit_idx,
                                pre_load=pre_load)
 
     def get_landing_commit(self):
         """
         Returns landing commit, or if that doesn't exist returns the tip
         """
         _rev_type, _rev = self.landing_rev
         commit = self.get_commit(_rev)
         if isinstance(commit, EmptyCommit):
             return self.get_commit()
         return commit
 
     def update_commit_cache(self, cs_cache=None, config=None):
         """
         Update cache of last changeset for repository, keys should be::
 
             short_id
             raw_id
             revision
             parents
             message
             date
             author
 
         :param cs_cache:
         """
         from rhodecode.lib.vcs.backends.base import BaseChangeset
         if cs_cache is None:
             # use no-cache version here
             scm_repo = self.scm_instance(cache=False, config=config)
             if scm_repo:
                 cs_cache = scm_repo.get_commit(
                     pre_load=["author", "date", "message", "parents"])
             else:
                 cs_cache = EmptyCommit()
 
         if isinstance(cs_cache, BaseChangeset):
             cs_cache = cs_cache.__json__()
 
         def is_outdated(new_cs_cache):
             if (new_cs_cache['raw_id'] != self.changeset_cache['raw_id'] or
                 new_cs_cache['revision'] != self.changeset_cache['revision']):
                 return True
             return False
 
         # check if we have maybe already latest cached revision
         if is_outdated(cs_cache) or not self.changeset_cache:
             _default = datetime.datetime.fromtimestamp(0)
             last_change = cs_cache.get('date') or _default
             log.debug('updated repo %s with new cs cache %s',
                       self.repo_name, cs_cache)
             self.updated_on = last_change
             self.changeset_cache = cs_cache
             Session().add(self)
             Session().commit()
         else:
             log.debug('Skipping update_commit_cache for repo:`%s` '
                       'commit already with latest changes', self.repo_name)
 
     @property
     def tip(self):
         return self.get_commit('tip')
 
     @property
     def author(self):
         return self.tip.author
 
     @property
     def last_change(self):
         return self.scm_instance().last_change
 
     def get_comments(self, revisions=None):
         """
         Returns comments for this repository grouped by revisions
 
         :param revisions: filter query by revisions only
         """
         cmts = ChangesetComment.query()\
             .filter(ChangesetComment.repo == self)
         if revisions:
             cmts = cmts.filter(ChangesetComment.revision.in_(revisions))
         grouped = collections.defaultdict(list)
         for cmt in cmts.all():
             grouped[cmt.revision].append(cmt)
         return grouped
 
     def statuses(self, revisions=None):
         """
         Returns statuses for this repository
 
         :param revisions: list of revisions to get statuses for
         """
         statuses = ChangesetStatus.query()\
             .filter(ChangesetStatus.repo == self)\
             .filter(ChangesetStatus.version == 0)
 
         if revisions:
             # Try doing the filtering in chunks to avoid hitting limits
             size = 500
             status_results = []
             for chunk in xrange(0, len(revisions), size):
                 status_results += statuses.filter(
                     ChangesetStatus.revision.in_(
                         revisions[chunk: chunk+size])
                 ).all()
         else:
             status_results = statuses.all()
 
         grouped = {}
 
         # maybe we have open new pullrequest without a status?
         stat = ChangesetStatus.STATUS_UNDER_REVIEW
         status_lbl = ChangesetStatus.get_status_lbl(stat)
         for pr in PullRequest.query().filter(PullRequest.source_repo == self).all():
             for rev in pr.revisions:
                 pr_id = pr.pull_request_id
                 pr_repo = pr.target_repo.repo_name
                 grouped[rev] = [stat, status_lbl, pr_id, pr_repo]
 
         for stat in status_results:
             pr_id = pr_repo = None
             if stat.pull_request:
                 pr_id = stat.pull_request.pull_request_id
                 pr_repo = stat.pull_request.target_repo.repo_name
             grouped[stat.revision] = [str(stat.status), stat.status_lbl,
                                       pr_id, pr_repo]
         return grouped
 
     # ==========================================================================
     # SCM CACHE INSTANCE
     # ==========================================================================
 
     def scm_instance(self, **kwargs):
         import rhodecode
 
         # Passing a config will not hit the cache currently only used
         # for repo2dbmapper
         config = kwargs.pop('config', None)
         cache = kwargs.pop('cache', None)
         full_cache = str2bool(rhodecode.CONFIG.get('vcs_full_cache'))
         # if cache is NOT defined use default global, else we have a full
         # control over cache behaviour
         if cache is None and full_cache and not config:
             return self._get_instance_cached()
         return self._get_instance(cache=bool(cache), config=config)
 
     def _get_instance_cached(self):
         @cache_region('long_term')
         def _get_repo(cache_key):
             return self._get_instance()
 
         invalidator_context = CacheKey.repo_context_cache(
             _get_repo, self.repo_name, None, thread_scoped=True)
 
         with invalidator_context as context:
             context.invalidate()
             repo = context.compute()
 
         return repo
 
     def _get_instance(self, cache=True, config=None):
         config = config or self._config
         custom_wire = {
             'cache': cache  # controls the vcs.remote cache
         }
 
         repo = get_vcs_instance(
             repo_path=safe_str(self.repo_full_path),
             config=config,
             with_wire=custom_wire,
             create=False)
 
         return repo
 
     def __json__(self):
         return {'landing_rev': self.landing_rev}
 
     def get_dict(self):
 
         # Since we transformed `repo_name` to a hybrid property, we need to
         # keep compatibility with the code which uses `repo_name` field.
 
         result = super(Repository, self).get_dict()
         result['repo_name'] = result.pop('_repo_name', None)
         return result
 
 
 class RepoGroup(Base, BaseModel):
     __tablename__ = 'groups'
     __table_args__ = (
         UniqueConstraint('group_name', 'group_parent_id'),
         CheckConstraint('group_id != group_parent_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     __mapper_args__ = {'order_by': 'group_name'}
 
     CHOICES_SEPARATOR = '/'  # used to generate select2 choices for nested groups
 
     group_id = Column("group_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     group_name = Column("group_name", String(255), nullable=False, unique=True, default=None)
     group_parent_id = Column("group_parent_id", Integer(), ForeignKey('groups.group_id'), nullable=True, unique=None, default=None)
     group_description = Column("group_description", String(10000), nullable=True, unique=None, default=None)
     enable_locking = Column("enable_locking", Boolean(), nullable=False, unique=None, default=False)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=False, default=None)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
 
     repo_group_to_perm = relationship('UserRepoGroupToPerm', cascade='all', order_by='UserRepoGroupToPerm.group_to_perm_id')
     users_group_to_perm = relationship('UserGroupRepoGroupToPerm', cascade='all')
     parent_group = relationship('RepoGroup', remote_side=group_id)
     user = relationship('User')
     integrations = relationship('Integration',
                                 cascade="all, delete, delete-orphan")
 
     def __init__(self, group_name='', parent_group=None):
         self.group_name = group_name
         self.parent_group = parent_group
 
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__, self.group_id,
                                       self.group_name)
 
     @classmethod
     def _generate_choice(cls, repo_group):
         from webhelpers.html import literal as _literal
         _name = lambda k: _literal(cls.CHOICES_SEPARATOR.join(k))
         return repo_group.group_id, _name(repo_group.full_path_splitted)
 
     @classmethod
     def groups_choices(cls, groups=None, show_empty_group=True):
         if not groups:
             groups = cls.query().all()
 
         repo_groups = []
         if show_empty_group:
             repo_groups = [('-1', u'-- %s --' % _('No parent'))]
 
         repo_groups.extend([cls._generate_choice(x) for x in groups])
 
         repo_groups = sorted(
             repo_groups, key=lambda t: t[1].split(cls.CHOICES_SEPARATOR)[0])
         return repo_groups
 
     @classmethod
     def url_sep(cls):
         return URL_SEP
 
     @classmethod
     def get_by_group_name(cls, group_name, cache=False, case_insensitive=False):
         if case_insensitive:
             gr = cls.query().filter(func.lower(cls.group_name)
                                     == func.lower(group_name))
         else:
             gr = cls.query().filter(cls.group_name == group_name)
         if cache:
             gr = gr.options(FromCache(
                             "sql_cache_short",
                             "get_group_%s" % _hash_key(group_name)))
         return gr.scalar()
 
     @classmethod
     def get_all_repo_groups(cls, user_id=Optional(None), group_id=Optional(None),
                             case_insensitive=True):
         q = RepoGroup.query()
 
         if not isinstance(user_id, Optional):
             q = q.filter(RepoGroup.user_id == user_id)
 
         if not isinstance(group_id, Optional):
             q = q.filter(RepoGroup.group_parent_id == group_id)
 
         if case_insensitive:
             q = q.order_by(func.lower(RepoGroup.group_name))
         else:
             q = q.order_by(RepoGroup.group_name)
         return q.all()
 
     @property
     def parents(self):
         parents_recursion_limit = 10
         groups = []
         if self.parent_group is None:
             return groups
         cur_gr = self.parent_group
         groups.insert(0, cur_gr)
         cnt = 0
         while 1:
             cnt += 1
             gr = getattr(cur_gr, 'parent_group', None)
             cur_gr = cur_gr.parent_group
             if gr is None:
                 break
             if cnt == parents_recursion_limit:
                 # this will prevent accidental infinit loops
                 log.error(('more than %s parents found for group %s, stopping '
                            'recursive parent fetching' % (parents_recursion_limit, self)))
                 break
 
             groups.insert(0, gr)
         return groups
 
     @property
     def children(self):
         return RepoGroup.query().filter(RepoGroup.parent_group == self)
 
     @property
     def name(self):
         return self.group_name.split(RepoGroup.url_sep())[-1]
 
     @property
     def full_path(self):
         return self.group_name
 
     @property
     def full_path_splitted(self):
         return self.group_name.split(RepoGroup.url_sep())
 
     @property
     def repositories(self):
         return Repository.query()\
                 .filter(Repository.group == self)\
                 .order_by(Repository.repo_name)
 
     @property
     def repositories_recursive_count(self):
         cnt = self.repositories.count()
 
         def children_count(group):
             cnt = 0
             for child in group.children:
                 cnt += child.repositories.count()
                 cnt += children_count(child)
             return cnt
 
         return cnt + children_count(self)
 
     def _recursive_objects(self, include_repos=True):
         all_ = []
 
         def _get_members(root_gr):
             if include_repos:
                 for r in root_gr.repositories:
                     all_.append(r)
             childs = root_gr.children.all()
             if childs:
                 for gr in childs:
                     all_.append(gr)
                     _get_members(gr)
 
         _get_members(self)
         return [self] + all_
 
     def recursive_groups_and_repos(self):
         """
         Recursive return all groups, with repositories in those groups
         """
         return self._recursive_objects()
 
     def recursive_groups(self):
         """
         Returns all children groups for this group including children of children
         """
         return self._recursive_objects(include_repos=False)
 
     def get_new_name(self, group_name):
         """
         returns new full group name based on parent and new name
 
         :param group_name:
         """
         path_prefix = (self.parent_group.full_path_splitted if
                        self.parent_group else [])
         return RepoGroup.url_sep().join(path_prefix + [group_name])
 
     def permissions(self, with_admins=True, with_owner=True):
         q = UserRepoGroupToPerm.query().filter(UserRepoGroupToPerm.group == self)
         q = q.options(joinedload(UserRepoGroupToPerm.group),
                       joinedload(UserRepoGroupToPerm.user),
                       joinedload(UserRepoGroupToPerm.permission),)
 
         # get owners and admins and permissions. We do a trick of re-writing
         # objects from sqlalchemy to named-tuples due to sqlalchemy session
         # has a global reference and changing one object propagates to all
         # others. This means if admin is also an owner admin_row that change
         # would propagate to both objects
         perm_rows = []
         for _usr in q.all():
             usr = AttributeDict(_usr.user.get_dict())
             usr.permission = _usr.permission.permission_name
             perm_rows.append(usr)
 
         # filter the perm rows by 'default' first and then sort them by
         # admin,write,read,none permissions sorted again alphabetically in
         # each group
         perm_rows = sorted(perm_rows, key=display_sort)
 
         _admin_perm = 'group.admin'
         owner_row = []
         if with_owner:
             usr = AttributeDict(self.user.get_dict())
             usr.owner_row = True
             usr.permission = _admin_perm
             owner_row.append(usr)
 
         super_admin_rows = []
         if with_admins:
             for usr in User.get_all_super_admins():
                 # if this admin is also owner, don't double the record
                 if usr.user_id == owner_row[0].user_id:
                     owner_row[0].admin_row = True
                 else:
                     usr = AttributeDict(usr.get_dict())
                     usr.admin_row = True
                     usr.permission = _admin_perm
                     super_admin_rows.append(usr)
 
         return super_admin_rows + owner_row + perm_rows
 
     def permission_user_groups(self):
         q = UserGroupRepoGroupToPerm.query().filter(UserGroupRepoGroupToPerm.group == self)
         q = q.options(joinedload(UserGroupRepoGroupToPerm.group),
                       joinedload(UserGroupRepoGroupToPerm.users_group),
                       joinedload(UserGroupRepoGroupToPerm.permission),)
 
         perm_rows = []
         for _user_group in q.all():
             usr = AttributeDict(_user_group.users_group.get_dict())
             usr.permission = _user_group.permission.permission_name
             perm_rows.append(usr)
 
         return perm_rows
 
     def get_api_data(self):
         """
         Common function for generating api data
 
         """
         group = self
         data = {
             'group_id': group.group_id,
             'group_name': group.group_name,
             'group_description': group.group_description,
             'parent_group': group.parent_group.group_name if group.parent_group else None,
             'repositories': [x.repo_name for x in group.repositories],
             'owner': group.user.username,
         }
         return data
 
 
 class Permission(Base, BaseModel):
     __tablename__ = 'permissions'
     __table_args__ = (
         Index('p_perm_name_idx', 'permission_name'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     PERMS = [
         ('hg.admin', _('RhodeCode Super Administrator')),
 
         ('repository.none', _('Repository no access')),
         ('repository.read', _('Repository read access')),
         ('repository.write', _('Repository write access')),
         ('repository.admin', _('Repository admin access')),
 
         ('group.none', _('Repository group no access')),
         ('group.read', _('Repository group read access')),
         ('group.write', _('Repository group write access')),
         ('group.admin', _('Repository group admin access')),
 
         ('usergroup.none', _('User group no access')),
         ('usergroup.read', _('User group read access')),
         ('usergroup.write', _('User group write access')),
         ('usergroup.admin', _('User group admin access')),
 
         ('hg.repogroup.create.false', _('Repository Group creation disabled')),
         ('hg.repogroup.create.true', _('Repository Group creation enabled')),
 
         ('hg.usergroup.create.false', _('User Group creation disabled')),
         ('hg.usergroup.create.true', _('User Group creation enabled')),
 
         ('hg.create.none', _('Repository creation disabled')),
         ('hg.create.repository', _('Repository creation enabled')),
         ('hg.create.write_on_repogroup.true', _('Repository creation enabled with write permission to a repository group')),
         ('hg.create.write_on_repogroup.false', _('Repository creation disabled with write permission to a repository group')),
 
         ('hg.fork.none', _('Repository forking disabled')),
         ('hg.fork.repository', _('Repository forking enabled')),
 
         ('hg.register.none', _('Registration disabled')),
         ('hg.register.manual_activate', _('User Registration with manual account activation')),
         ('hg.register.auto_activate', _('User Registration with automatic account activation')),
 
         ('hg.extern_activate.manual', _('Manual activation of external account')),
         ('hg.extern_activate.auto', _('Automatic activation of external account')),
 
         ('hg.inherit_default_perms.false', _('Inherit object permissions from default user disabled')),
         ('hg.inherit_default_perms.true', _('Inherit object permissions from default user enabled')),
     ]
 
     # definition of system default permissions for DEFAULT user
     DEFAULT_USER_PERMISSIONS = [
         'repository.read',
         'group.read',
         'usergroup.read',
         'hg.create.repository',
         'hg.repogroup.create.false',
         'hg.usergroup.create.false',
         'hg.create.write_on_repogroup.true',
         'hg.fork.repository',
         'hg.register.manual_activate',
         'hg.extern_activate.auto',
         'hg.inherit_default_perms.true',
     ]
 
     # defines which permissions are more important higher the more important
     # Weight defines which permissions are more important.
     # The higher number the more important.
     PERM_WEIGHTS = {
         'repository.none': 0,
         'repository.read': 1,
         'repository.write': 3,
         'repository.admin': 4,
 
         'group.none': 0,
         'group.read': 1,
         'group.write': 3,
         'group.admin': 4,
 
         'usergroup.none': 0,
         'usergroup.read': 1,
         'usergroup.write': 3,
         'usergroup.admin': 4,
 
         'hg.repogroup.create.false': 0,
         'hg.repogroup.create.true': 1,
 
         'hg.usergroup.create.false': 0,
         'hg.usergroup.create.true': 1,
 
         'hg.fork.none': 0,
         'hg.fork.repository': 1,
         'hg.create.none': 0,
         'hg.create.repository': 1
     }
 
     permission_id = Column("permission_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     permission_name = Column("permission_name", String(255), nullable=True, unique=None, default=None)
     permission_longname = Column("permission_longname", String(255), nullable=True, unique=None, default=None)
 
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (
             self.__class__.__name__, self.permission_id, self.permission_name
         )
 
     @classmethod
     def get_by_key(cls, key):
         return cls.query().filter(cls.permission_name == key).scalar()
 
     @classmethod
     def get_default_repo_perms(cls, user_id, repo_id=None):
         q = Session().query(UserRepoToPerm, Repository, Permission)\
             .join((Permission, UserRepoToPerm.permission_id == Permission.permission_id))\
             .join((Repository, UserRepoToPerm.repository_id == Repository.repo_id))\
             .filter(UserRepoToPerm.user_id == user_id)
         if repo_id:
             q = q.filter(UserRepoToPerm.repository_id == repo_id)
         return q.all()
 
     @classmethod
     def get_default_repo_perms_from_user_group(cls, user_id, repo_id=None):
         q = Session().query(UserGroupRepoToPerm, Repository, Permission)\
             .join(
                 Permission,
                 UserGroupRepoToPerm.permission_id == Permission.permission_id)\
             .join(
                 Repository,
                 UserGroupRepoToPerm.repository_id == Repository.repo_id)\
             .join(
                 UserGroup,
                 UserGroupRepoToPerm.users_group_id ==
                 UserGroup.users_group_id)\
             .join(
                 UserGroupMember,
                 UserGroupRepoToPerm.users_group_id ==
                 UserGroupMember.users_group_id)\
             .filter(
                 UserGroupMember.user_id == user_id,
                 UserGroup.users_group_active == true())
         if repo_id:
             q = q.filter(UserGroupRepoToPerm.repository_id == repo_id)
         return q.all()
 
     @classmethod
     def get_default_group_perms(cls, user_id, repo_group_id=None):
         q = Session().query(UserRepoGroupToPerm, RepoGroup, Permission)\
             .join((Permission, UserRepoGroupToPerm.permission_id == Permission.permission_id))\
             .join((RepoGroup, UserRepoGroupToPerm.group_id == RepoGroup.group_id))\
             .filter(UserRepoGroupToPerm.user_id == user_id)
         if repo_group_id:
             q = q.filter(UserRepoGroupToPerm.group_id == repo_group_id)
         return q.all()
 
     @classmethod
     def get_default_group_perms_from_user_group(
             cls, user_id, repo_group_id=None):
         q = Session().query(UserGroupRepoGroupToPerm, RepoGroup, Permission)\
             .join(
                 Permission,
                 UserGroupRepoGroupToPerm.permission_id ==
                 Permission.permission_id)\
             .join(
                 RepoGroup,
                 UserGroupRepoGroupToPerm.group_id == RepoGroup.group_id)\
             .join(
                 UserGroup,
                 UserGroupRepoGroupToPerm.users_group_id ==
                 UserGroup.users_group_id)\
             .join(
                 UserGroupMember,
                 UserGroupRepoGroupToPerm.users_group_id ==
                 UserGroupMember.users_group_id)\
             .filter(
                 UserGroupMember.user_id == user_id,
                 UserGroup.users_group_active == true())
         if repo_group_id:
             q = q.filter(UserGroupRepoGroupToPerm.group_id == repo_group_id)
         return q.all()
 
     @classmethod
     def get_default_user_group_perms(cls, user_id, user_group_id=None):
         q = Session().query(UserUserGroupToPerm, UserGroup, Permission)\
             .join((Permission, UserUserGroupToPerm.permission_id == Permission.permission_id))\
             .join((UserGroup, UserUserGroupToPerm.user_group_id == UserGroup.users_group_id))\
             .filter(UserUserGroupToPerm.user_id == user_id)
         if user_group_id:
             q = q.filter(UserUserGroupToPerm.user_group_id == user_group_id)
         return q.all()
 
     @classmethod
     def get_default_user_group_perms_from_user_group(
             cls, user_id, user_group_id=None):
         TargetUserGroup = aliased(UserGroup, name='target_user_group')
         q = Session().query(UserGroupUserGroupToPerm, UserGroup, Permission)\
             .join(
                 Permission,
                 UserGroupUserGroupToPerm.permission_id ==
                 Permission.permission_id)\
             .join(
                 TargetUserGroup,
                 UserGroupUserGroupToPerm.target_user_group_id ==
                 TargetUserGroup.users_group_id)\
             .join(
                 UserGroup,
                 UserGroupUserGroupToPerm.user_group_id ==
                 UserGroup.users_group_id)\
             .join(
                 UserGroupMember,
                 UserGroupUserGroupToPerm.user_group_id ==
                 UserGroupMember.users_group_id)\
             .filter(
                 UserGroupMember.user_id == user_id,
                 UserGroup.users_group_active == true())
         if user_group_id:
             q = q.filter(
                 UserGroupUserGroupToPerm.user_group_id == user_group_id)
 
         return q.all()
 
 
 class UserRepoToPerm(Base, BaseModel):
     __tablename__ = 'repo_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'repository_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     repo_to_perm_id = Column("repo_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
     repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=None, default=None)
 
     user = relationship('User')
     repository = relationship('Repository')
     permission = relationship('Permission')
 
     @classmethod
     def create(cls, user, repository, permission):
         n = cls()
         n.user = user
         n.repository = repository
         n.permission = permission
         Session().add(n)
         return n
 
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.repository)
 
 
 class UserUserGroupToPerm(Base, BaseModel):
     __tablename__ = 'user_user_group_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'user_group_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     user_user_group_to_perm_id = Column("user_user_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
     user_group_id = Column("user_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
     user = relationship('User')
     user_group = relationship('UserGroup')
     permission = relationship('Permission')
 
     @classmethod
     def create(cls, user, user_group, permission):
         n = cls()
         n.user = user
         n.user_group = user_group
         n.permission = permission
         Session().add(n)
         return n
 
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.user_group)
 
 
 class UserToPerm(Base, BaseModel):
     __tablename__ = 'user_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     user_to_perm_id = Column("user_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
     user = relationship('User')
     permission = relationship('Permission', lazy='joined')
 
     def __unicode__(self):
         return u'<%s => %s >' % (self.user, self.permission)
 
 
 class UserGroupRepoToPerm(Base, BaseModel):
     __tablename__ = 'users_group_repo_to_perm'
     __table_args__ = (
         UniqueConstraint('repository_id', 'users_group_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     users_group_to_perm_id = Column("users_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
     repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=None, default=None)
 
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
     repository = relationship('Repository')
 
     @classmethod
     def create(cls, users_group, repository, permission):
         n = cls()
         n.users_group = users_group
         n.repository = repository
         n.permission = permission
         Session().add(n)
         return n
 
     def __unicode__(self):
         return u'<UserGroupRepoToPerm:%s => %s >' % (self.users_group, self.repository)
 
 
 class UserGroupUserGroupToPerm(Base, BaseModel):
     __tablename__ = 'user_group_user_group_to_perm'
     __table_args__ = (
         UniqueConstraint('target_user_group_id', 'user_group_id', 'permission_id'),
         CheckConstraint('target_user_group_id != user_group_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     user_group_user_group_to_perm_id = Column("user_group_user_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     target_user_group_id = Column("target_user_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
     user_group_id = Column("user_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
     target_user_group = relationship('UserGroup', primaryjoin='UserGroupUserGroupToPerm.target_user_group_id==UserGroup.users_group_id')
     user_group = relationship('UserGroup', primaryjoin='UserGroupUserGroupToPerm.user_group_id==UserGroup.users_group_id')
     permission = relationship('Permission')
 
     @classmethod
     def create(cls, target_user_group, user_group, permission):
         n = cls()
         n.target_user_group = target_user_group
         n.user_group = user_group
         n.permission = permission
         Session().add(n)
         return n
 
     def __unicode__(self):
         return u'<UserGroupUserGroup:%s => %s >' % (self.target_user_group, self.user_group)
 
 
 class UserGroupToPerm(Base, BaseModel):
     __tablename__ = 'users_group_to_perm'
     __table_args__ = (
         UniqueConstraint('users_group_id', 'permission_id',),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     users_group_to_perm_id = Column("users_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
 
 
 class UserRepoGroupToPerm(Base, BaseModel):
     __tablename__ = 'user_repo_group_to_perm'
     __table_args__ = (
         UniqueConstraint('user_id', 'group_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     group_to_perm_id = Column("group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
     group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
     user = relationship('User')
     group = relationship('RepoGroup')
     permission = relationship('Permission')
 
     @classmethod
     def create(cls, user, repository_group, permission):
         n = cls()
         n.user = user
         n.group = repository_group
         n.permission = permission
         Session().add(n)
         return n
 
 
 class UserGroupRepoGroupToPerm(Base, BaseModel):
     __tablename__ = 'users_group_repo_group_to_perm'
     __table_args__ = (
         UniqueConstraint('users_group_id', 'group_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     users_group_repo_group_to_perm_id = Column("users_group_repo_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
     group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'), nullable=False, unique=None, default=None)
     permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
     users_group = relationship('UserGroup')
     permission = relationship('Permission')
     group = relationship('RepoGroup')
 
     @classmethod
     def create(cls, user_group, repository_group, permission):
         n = cls()
         n.users_group = user_group
         n.group = repository_group
         n.permission = permission
         Session().add(n)
         return n
 
     def __unicode__(self):
         return u'<UserGroupRepoGroupToPerm:%s => %s >' % (self.users_group, self.group)
 
 
 class Statistics(Base, BaseModel):
     __tablename__ = 'statistics'
     __table_args__ = (
          UniqueConstraint('repository_id'),
          {'extend_existing': True, 'mysql_engine': 'InnoDB',
           'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     stat_id = Column("stat_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=True, default=None)
     stat_on_revision = Column("stat_on_revision", Integer(), nullable=False)
     commit_activity = Column("commit_activity", LargeBinary(1000000), nullable=False)#JSON data
     commit_activity_combined = Column("commit_activity_combined", LargeBinary(), nullable=False)#JSON data
     languages = Column("languages", LargeBinary(1000000), nullable=False)#JSON data
 
     repository = relationship('Repository', single_parent=True)
 
 
 class UserFollowing(Base, BaseModel):
     __tablename__ = 'user_followings'
     __table_args__ = (
         UniqueConstraint('user_id', 'follows_repository_id'),
         UniqueConstraint('user_id', 'follows_user_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     user_following_id = Column("user_following_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
     follows_repo_id = Column("follows_repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=True, unique=None, default=None)
     follows_user_id = Column("follows_user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
     follows_from = Column('follows_from', DateTime(timezone=False), nullable=True, unique=None, default=datetime.datetime.now)
 
     user = relationship('User', primaryjoin='User.user_id==UserFollowing.user_id')
 
     follows_user = relationship('User', primaryjoin='User.user_id==UserFollowing.follows_user_id')
     follows_repository = relationship('Repository', order_by='Repository.repo_name')
 
     @classmethod
     def get_repo_followers(cls, repo_id):
         return cls.query().filter(cls.follows_repo_id == repo_id)
 
 
 class CacheKey(Base, BaseModel):
     __tablename__ = 'cache_invalidation'
     __table_args__ = (
         UniqueConstraint('cache_key'),
         Index('key_idx', 'cache_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     CACHE_TYPE_ATOM = 'ATOM'
     CACHE_TYPE_RSS = 'RSS'
     CACHE_TYPE_README = 'README'
 
     cache_id = Column("cache_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     cache_key = Column("cache_key", String(255), nullable=True, unique=None, default=None)
     cache_args = Column("cache_args", String(255), nullable=True, unique=None, default=None)
     cache_active = Column("cache_active", Boolean(), nullable=True, unique=None, default=False)
 
     def __init__(self, cache_key, cache_args=''):
         self.cache_key = cache_key
         self.cache_args = cache_args
         self.cache_active = False
 
     def __unicode__(self):
         return u"<%s('%s:%s[%s]')>" % (
             self.__class__.__name__,
             self.cache_id, self.cache_key, self.cache_active)
 
     def _cache_key_partition(self):
         prefix, repo_name, suffix = self.cache_key.partition(self.cache_args)
         return prefix, repo_name, suffix
 
     def get_prefix(self):
         """
         Try to extract prefix from existing cache key. The key could consist
         of prefix, repo_name, suffix
         """
         # this returns prefix, repo_name, suffix
         return self._cache_key_partition()[0]
 
     def get_suffix(self):
         """
         get suffix that might have been used in _get_cache_key to
         generate self.cache_key. Only used for informational purposes
         in repo_edit.html.
         """
         # prefix, repo_name, suffix
         return self._cache_key_partition()[2]
 
     @classmethod
     def delete_all_cache(cls):
         """
         Delete all cache keys from database.
         Should only be run when all instances are down and all entries
         thus stale.
         """
         cls.query().delete()
         Session().commit()
 
     @classmethod
     def get_cache_key(cls, repo_name, cache_type):
         """
 
         Generate a cache key for this process of RhodeCode instance.
         Prefix most likely will be process id or maybe explicitly set
         instance_id from .ini file.
         """
         import rhodecode
         prefix = safe_unicode(rhodecode.CONFIG.get('instance_id') or '')
 
         repo_as_unicode = safe_unicode(repo_name)
         key = u'{}_{}'.format(repo_as_unicode, cache_type) \
             if cache_type else repo_as_unicode
 
         return u'{}{}'.format(prefix, key)
 
     @classmethod
     def set_invalidate(cls, repo_name, delete=False):
         """
         Mark all caches of a repo as invalid in the database.
         """
 
         try:
             qry = Session().query(cls).filter(cls.cache_args == repo_name)
             if delete:
                 log.debug('cache objects deleted for repo %s',
                           safe_str(repo_name))
                 qry.delete()
             else:
                 log.debug('cache objects marked as invalid for repo %s',
                           safe_str(repo_name))
                 qry.update({"cache_active": False})
 
             Session().commit()
         except Exception:
             log.exception(
                 'Cache key invalidation failed for repository %s',
                 safe_str(repo_name))
             Session().rollback()
 
     @classmethod
     def get_active_cache(cls, cache_key):
         inv_obj = cls.query().filter(cls.cache_key == cache_key).scalar()
         if inv_obj:
             return inv_obj
         return None
 
     @classmethod
     def repo_context_cache(cls, compute_func, repo_name, cache_type,
                            thread_scoped=False):
         """
         @cache_region('long_term')
         def _heavy_calculation(cache_key):
             return 'result'
 
         cache_context = CacheKey.repo_context_cache(
             _heavy_calculation, repo_name, cache_type)
 
         with cache_context as context:
             context.invalidate()
             computed = context.compute()
 
         assert computed == 'result'
         """
         from rhodecode.lib import caches
         return caches.InvalidationContext(
             compute_func, repo_name, cache_type, thread_scoped=thread_scoped)
 
 
 class ChangesetComment(Base, BaseModel):
     __tablename__ = 'changeset_comments'
     __table_args__ = (
         Index('cc_revision_idx', 'revision'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     COMMENT_OUTDATED = u'comment_outdated'
 
     comment_id = Column('comment_id', Integer(), nullable=False, primary_key=True)
     repo_id = Column('repo_id', Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     revision = Column('revision', String(40), nullable=True)
     pull_request_id = Column("pull_request_id", Integer(), ForeignKey('pull_requests.pull_request_id'), nullable=True)
     pull_request_version_id = Column("pull_request_version_id", Integer(), ForeignKey('pull_request_versions.pull_request_version_id'), nullable=True)
     line_no = Column('line_no', Unicode(10), nullable=True)
     hl_lines = Column('hl_lines', Unicode(512), nullable=True)
     f_path = Column('f_path', Unicode(1000), nullable=True)
     user_id = Column('user_id', Integer(), ForeignKey('users.user_id'), nullable=False)
     text = Column('text', UnicodeText().with_variant(UnicodeText(25000), 'mysql'), nullable=False)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     modified_at = Column('modified_at', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     renderer = Column('renderer', Unicode(64), nullable=True)
     display_state = Column('display_state',  Unicode(128), nullable=True)
 
     author = relationship('User', lazy='joined')
     repo = relationship('Repository')
     status_change = relationship('ChangesetStatus', cascade="all, delete, delete-orphan")
     pull_request = relationship('PullRequest', lazy='joined')
     pull_request_version = relationship('PullRequestVersion')
 
     @classmethod
     def get_users(cls, revision=None, pull_request_id=None):
         """
         Returns user associated with this ChangesetComment. ie those
         who actually commented
 
         :param cls:
         :param revision:
         """
         q = Session().query(User)\
                 .join(ChangesetComment.author)
         if revision:
             q = q.filter(cls.revision == revision)
         elif pull_request_id:
             q = q.filter(cls.pull_request_id == pull_request_id)
         return q.all()
 
     def render(self, mentions=False):
         from rhodecode.lib import helpers as h
         return h.render(self.text, renderer=self.renderer, mentions=mentions)
 
     def __repr__(self):
         if self.comment_id:
             return '<DB:ChangesetComment #%s>' % self.comment_id
         else:
             return '<DB:ChangesetComment at %#x>' % id(self)
 
 
 class ChangesetStatus(Base, BaseModel):
     __tablename__ = 'changeset_statuses'
     __table_args__ = (
         Index('cs_revision_idx', 'revision'),
         Index('cs_version_idx', 'version'),
         UniqueConstraint('repo_id', 'revision', 'version'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     STATUS_NOT_REVIEWED = DEFAULT = 'not_reviewed'
     STATUS_APPROVED = 'approved'
     STATUS_REJECTED = 'rejected'
     STATUS_UNDER_REVIEW = 'under_review'
 
     STATUSES = [
         (STATUS_NOT_REVIEWED, _("Not Reviewed")),  # (no icon) and default
         (STATUS_APPROVED, _("Approved")),
         (STATUS_REJECTED, _("Rejected")),
         (STATUS_UNDER_REVIEW, _("Under Review")),
     ]
 
     changeset_status_id = Column('changeset_status_id', Integer(), nullable=False, primary_key=True)
     repo_id = Column('repo_id', Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None)
     revision = Column('revision', String(40), nullable=False)
     status = Column('status', String(128), nullable=False, default=DEFAULT)
     changeset_comment_id = Column('changeset_comment_id', Integer(), ForeignKey('changeset_comments.comment_id'))
     modified_at = Column('modified_at', DateTime(), nullable=False, default=datetime.datetime.now)
     version = Column('version', Integer(), nullable=False, default=0)
     pull_request_id = Column("pull_request_id", Integer(), ForeignKey('pull_requests.pull_request_id'), nullable=True)
 
     author = relationship('User', lazy='joined')
     repo = relationship('Repository')
     comment = relationship('ChangesetComment', lazy='joined')
     pull_request = relationship('PullRequest', lazy='joined')
 
     def __unicode__(self):
         return u"<%s('%s[%s]:%s')>" % (
             self.__class__.__name__,
             self.status, self.version, self.author
         )
 
     @classmethod
     def get_status_lbl(cls, value):
         return dict(cls.STATUSES).get(value)
 
     @property
     def status_lbl(self):
         return ChangesetStatus.get_status_lbl(self.status)
 
 
 class _PullRequestBase(BaseModel):
     """
     Common attributes of pull request and version entries.
     """
 
     # .status values
     STATUS_NEW = u'new'
     STATUS_OPEN = u'open'
     STATUS_CLOSED = u'closed'
 
     title = Column('title', Unicode(255), nullable=True)
     description = Column(
         'description', UnicodeText().with_variant(UnicodeText(10240), 'mysql'),
         nullable=True)
     # new/open/closed status of pull request (not approve/reject/etc)
     status = Column('status', Unicode(255), nullable=False, default=STATUS_NEW)
     created_on = Column(
         'created_on', DateTime(timezone=False), nullable=False,
         default=datetime.datetime.now)
     updated_on = Column(
         'updated_on', DateTime(timezone=False), nullable=False,
         default=datetime.datetime.now)
 
     @declared_attr
     def user_id(cls):
         return Column(
             "user_id", Integer(), ForeignKey('users.user_id'), nullable=False,
             unique=None)
 
     # 500 revisions max
     _revisions = Column(
         'revisions', UnicodeText().with_variant(UnicodeText(20500), 'mysql'))
 
     @declared_attr
     def source_repo_id(cls):
         # TODO: dan: rename column to source_repo_id
         return Column(
             'org_repo_id', Integer(), ForeignKey('repositories.repo_id'),
             nullable=False)
 
     source_ref = Column('org_ref', Unicode(255), nullable=False)
 
     @declared_attr
     def target_repo_id(cls):
         # TODO: dan: rename column to target_repo_id
         return Column(
             'other_repo_id', Integer(), ForeignKey('repositories.repo_id'),
             nullable=False)
 
     target_ref = Column('other_ref', Unicode(255), nullable=False)
 
     # TODO: dan: rename column to last_merge_source_rev
     _last_merge_source_rev = Column(
         'last_merge_org_rev', String(40), nullable=True)
     # TODO: dan: rename column to last_merge_target_rev
     _last_merge_target_rev = Column(
         'last_merge_other_rev', String(40), nullable=True)
     _last_merge_status = Column('merge_status', Integer(), nullable=True)
     merge_rev = Column('merge_rev', String(40), nullable=True)
 
     @hybrid_property
     def revisions(self):
         return self._revisions.split(':') if self._revisions else []
 
     @revisions.setter
     def revisions(self, val):
         self._revisions = ':'.join(val)
 
     @declared_attr
     def author(cls):
         return relationship('User', lazy='joined')
 
     @declared_attr
     def source_repo(cls):
         return relationship(
             'Repository',
             primaryjoin='%s.source_repo_id==Repository.repo_id' % cls.__name__)
 
     @property
     def source_ref_parts(self):
         refs = self.source_ref.split(':')
         return Reference(refs[0], refs[1], refs[2])
 
     @declared_attr
     def target_repo(cls):
         return relationship(
             'Repository',
             primaryjoin='%s.target_repo_id==Repository.repo_id' % cls.__name__)
 
     @property
     def target_ref_parts(self):
         refs = self.target_ref.split(':')
         return Reference(refs[0], refs[1], refs[2])
 
 
 class PullRequest(Base, _PullRequestBase):
     __tablename__ = 'pull_requests'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     pull_request_id = Column(
         'pull_request_id', Integer(), nullable=False, primary_key=True)
 
     def __repr__(self):
         if self.pull_request_id:
             return '<DB:PullRequest #%s>' % self.pull_request_id
         else:
             return '<DB:PullRequest at %#x>' % id(self)
 
     reviewers = relationship('PullRequestReviewers',
                              cascade="all, delete, delete-orphan")
     statuses = relationship('ChangesetStatus')
     comments = relationship('ChangesetComment',
                             cascade="all, delete, delete-orphan")
     versions = relationship('PullRequestVersion',
                             cascade="all, delete, delete-orphan")
 
     def is_closed(self):
         return self.status == self.STATUS_CLOSED
 
     def get_api_data(self):
         from rhodecode.model.pull_request import PullRequestModel
         pull_request = self
         merge_status = PullRequestModel().merge_status(pull_request)
         pull_request_url = url(
             'pullrequest_show', repo_name=self.target_repo.repo_name,
             pull_request_id=self.pull_request_id, qualified=True)
         data = {
             'pull_request_id': pull_request.pull_request_id,
             'url': pull_request_url,
             'title': pull_request.title,
             'description': pull_request.description,
             'status': pull_request.status,
             'created_on': pull_request.created_on,
             'updated_on': pull_request.updated_on,
             'commit_ids': pull_request.revisions,
             'review_status': pull_request.calculated_review_status(),
             'mergeable': {
                 'status': merge_status[0],
                 'message': unicode(merge_status[1]),
             },
             'source': {
                 'clone_url': pull_request.source_repo.clone_url(),
                 'repository': pull_request.source_repo.repo_name,
                 'reference': {
                     'name': pull_request.source_ref_parts.name,
                     'type': pull_request.source_ref_parts.type,
                     'commit_id': pull_request.source_ref_parts.commit_id,
                 },
             },
             'target': {
                 'clone_url': pull_request.target_repo.clone_url(),
                 'repository': pull_request.target_repo.repo_name,
                 'reference': {
                     'name': pull_request.target_ref_parts.name,
                     'type': pull_request.target_ref_parts.type,
                     'commit_id': pull_request.target_ref_parts.commit_id,
                 },
             },
             'shadow': {
-                # TODO: martinb: Unify generation/suffix of clone url.
-                'clone_url': '{}/repository'.format(pull_request_url),
+                'clone_url': PullRequestModel().get_shadow_clone_url(
+                    pull_request),
             },
             'author': pull_request.author.get_api_data(include_secrets=False,
                                                        details='basic'),
             'reviewers': [
                 {
                     'user': reviewer.get_api_data(include_secrets=False,
                                                   details='basic'),
                     'reasons': reasons,
                     'review_status': st[0][1].status if st else 'not_reviewed',
                 }
                 for reviewer, reasons, st in pull_request.reviewers_statuses()
             ]
         }
 
         return data
 
     def __json__(self):
         return {
             'revisions': self.revisions,
         }
 
     def calculated_review_status(self):
         # TODO: anderson: 13.05.15 Used only on templates/my_account_pullrequests.html
         # because it's tricky on how to use ChangesetStatusModel from there
         warnings.warn("Use calculated_review_status from ChangesetStatusModel", DeprecationWarning)
         from rhodecode.model.changeset_status import ChangesetStatusModel
         return ChangesetStatusModel().calculated_review_status(self)
 
     def reviewers_statuses(self):
         warnings.warn("Use reviewers_statuses from ChangesetStatusModel", DeprecationWarning)
         from rhodecode.model.changeset_status import ChangesetStatusModel
         return ChangesetStatusModel().reviewers_statuses(self)
 
 
 class PullRequestVersion(Base, _PullRequestBase):
     __tablename__ = 'pull_request_versions'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     pull_request_version_id = Column(
         'pull_request_version_id', Integer(), nullable=False, primary_key=True)
     pull_request_id = Column(
         'pull_request_id', Integer(),
         ForeignKey('pull_requests.pull_request_id'), nullable=False)
     pull_request = relationship('PullRequest')
 
     def __repr__(self):
         if self.pull_request_version_id:
             return '<DB:PullRequestVersion #%s>' % self.pull_request_version_id
         else:
             return '<DB:PullRequestVersion at %#x>' % id(self)
 
 
 class PullRequestReviewers(Base, BaseModel):
     __tablename__ = 'pull_request_reviewers'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     def __init__(self, user=None, pull_request=None, reasons=None):
         self.user = user
         self.pull_request = pull_request
         self.reasons = reasons or []
 
     @hybrid_property
     def reasons(self):
         if not self._reasons:
             return []
         return self._reasons
 
     @reasons.setter
     def reasons(self, val):
         val = val or []
         if any(not isinstance(x, basestring) for x in val):
             raise Exception('invalid reasons type, must be list of strings')
         self._reasons = val
 
     pull_requests_reviewers_id = Column(
         'pull_requests_reviewers_id', Integer(), nullable=False,
         primary_key=True)
     pull_request_id = Column(
         "pull_request_id", Integer(),
         ForeignKey('pull_requests.pull_request_id'), nullable=False)
     user_id = Column(
         "user_id", Integer(), ForeignKey('users.user_id'), nullable=True)
     _reasons = Column(
         'reason', MutationList.as_mutable(
             JsonType('list', dialect_map=dict(mysql=UnicodeText(16384)))))
 
     user = relationship('User')
     pull_request = relationship('PullRequest')
 
 
 class Notification(Base, BaseModel):
     __tablename__ = 'notifications'
     __table_args__ = (
         Index('notification_type_idx', 'type'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
 
     TYPE_CHANGESET_COMMENT = u'cs_comment'
     TYPE_MESSAGE = u'message'
     TYPE_MENTION = u'mention'
     TYPE_REGISTRATION = u'registration'
     TYPE_PULL_REQUEST = u'pull_request'
     TYPE_PULL_REQUEST_COMMENT = u'pull_request_comment'
 
     notification_id = Column('notification_id', Integer(), nullable=False, primary_key=True)
     subject = Column('subject', Unicode(512), nullable=True)
     body = Column('body', UnicodeText().with_variant(UnicodeText(50000), 'mysql'), nullable=True)
     created_by = Column("created_by", Integer(), ForeignKey('users.user_id'), nullable=True)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     type_ = Column('type', Unicode(255))
 
     created_by_user = relationship('User')
     notifications_to_users = relationship('UserNotification', lazy='joined',
                                           cascade="all, delete, delete-orphan")
 
     @property
     def recipients(self):
         return [x.user for x in UserNotification.query()\
                 .filter(UserNotification.notification == self)\
                 .order_by(UserNotification.user_id.asc()).all()]
 
     @classmethod
     def create(cls, created_by, subject, body, recipients, type_=None):
         if type_ is None:
             type_ = Notification.TYPE_MESSAGE
 
         notification = cls()
         notification.created_by_user = created_by
         notification.subject = subject
         notification.body = body
         notification.type_ = type_
         notification.created_on = datetime.datetime.now()
 
         for u in recipients:
             assoc = UserNotification()
             assoc.notification = notification
 
             # if created_by is inside recipients mark his notification
             # as read
             if u.user_id == created_by.user_id:
                 assoc.read = True
 
             u.notifications.append(assoc)
         Session().add(notification)
 
         return notification
 
     @property
     def description(self):
         from rhodecode.model.notification import NotificationModel
         return NotificationModel().make_description(self)
 
 
 class UserNotification(Base, BaseModel):
     __tablename__ = 'user_to_notification'
     __table_args__ = (
         UniqueConstraint('user_id', 'notification_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     user_id = Column('user_id', Integer(), ForeignKey('users.user_id'), primary_key=True)
     notification_id = Column("notification_id", Integer(), ForeignKey('notifications.notification_id'), primary_key=True)
     read = Column('read', Boolean, default=False)
     sent_on = Column('sent_on', DateTime(timezone=False), nullable=True, unique=None)
 
     user = relationship('User', lazy="joined")
     notification = relationship('Notification', lazy="joined",
                                 order_by=lambda: Notification.created_on.desc(),)
 
     def mark_as_read(self):
         self.read = True
         Session().add(self)
 
 
 class Gist(Base, BaseModel):
     __tablename__ = 'gists'
     __table_args__ = (
         Index('g_gist_access_id_idx', 'gist_access_id'),
         Index('g_created_on_idx', 'created_on'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
     GIST_PUBLIC = u'public'
     GIST_PRIVATE = u'private'
     DEFAULT_FILENAME = u'gistfile1.txt'
 
     ACL_LEVEL_PUBLIC = u'acl_public'
     ACL_LEVEL_PRIVATE = u'acl_private'
 
     gist_id = Column('gist_id', Integer(), primary_key=True)
     gist_access_id = Column('gist_access_id', Unicode(250))
     gist_description = Column('gist_description', UnicodeText().with_variant(UnicodeText(1024), 'mysql'))
     gist_owner = Column('user_id', Integer(), ForeignKey('users.user_id'), nullable=True)
     gist_expires = Column('gist_expires', Float(53), nullable=False)
     gist_type = Column('gist_type', Unicode(128), nullable=False)
     created_on = Column('created_on', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     modified_at = Column('modified_at', DateTime(timezone=False), nullable=False, default=datetime.datetime.now)
     acl_level = Column('acl_level', Unicode(128), nullable=True)
 
     owner = relationship('User')
 
     def __repr__(self):
         return '<Gist:[%s]%s>' % (self.gist_type, self.gist_access_id)
 
     @classmethod
     def get_or_404(cls, id_):
         res = cls.query().filter(cls.gist_access_id == id_).scalar()
         if not res:
             raise HTTPNotFound
         return res
 
     @classmethod
     def get_by_access_id(cls, gist_access_id):
         return cls.query().filter(cls.gist_access_id == gist_access_id).scalar()
 
     def gist_url(self):
         import rhodecode
         alias_url = rhodecode.CONFIG.get('gist_alias_url')
         if alias_url:
             return alias_url.replace('{gistid}', self.gist_access_id)
 
         return url('gist', gist_id=self.gist_access_id, qualified=True)
 
     @classmethod
     def base_path(cls):
         """
         Returns base path when all gists are stored
 
         :param cls:
         """
         from rhodecode.model.gist import GIST_STORE_LOC
         q = Session().query(RhodeCodeUi)\
             .filter(RhodeCodeUi.ui_key == URL_SEP)
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return os.path.join(q.one().ui_value, GIST_STORE_LOC)
 
     def get_api_data(self):
         """
         Common function for generating gist related data for API
         """
         gist = self
         data = {
             'gist_id': gist.gist_id,
             'type': gist.gist_type,
             'access_id': gist.gist_access_id,
             'description': gist.gist_description,
             'url': gist.gist_url(),
             'expires': gist.gist_expires,
             'created_on': gist.created_on,
             'modified_at': gist.modified_at,
             'content': None,
             'acl_level': gist.acl_level,
         }
         return data
 
     def __json__(self):
         data = dict(
         )
         data.update(self.get_api_data())
         return data
     # SCM functions
 
     def scm_instance(self, **kwargs):
         full_repo_path = os.path.join(self.base_path(), self.gist_access_id)
         return get_vcs_instance(
             repo_path=safe_str(full_repo_path), create=False)
 
 
 class DbMigrateVersion(Base, BaseModel):
     __tablename__ = 'db_migrate_version'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True},
     )
     repository_id = Column('repository_id', String(250), primary_key=True)
     repository_path = Column('repository_path', Text)
     version = Column('version', Integer)
 
 
 class ExternalIdentity(Base, BaseModel):
     __tablename__ = 'external_identities'
     __table_args__ = (
         Index('local_user_id_idx', 'local_user_id'),
         Index('external_id_idx', 'external_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'})
 
     external_id = Column('external_id', Unicode(255), default=u'',
                          primary_key=True)
     external_username = Column('external_username', Unicode(1024), default=u'')
     local_user_id = Column('local_user_id', Integer(),
                            ForeignKey('users.user_id'), primary_key=True)
     provider_name = Column('provider_name', Unicode(255), default=u'',
                            primary_key=True)
     access_token = Column('access_token', String(1024), default=u'')
     alt_token = Column('alt_token', String(1024), default=u'')
     token_secret = Column('token_secret', String(1024), default=u'')
 
     @classmethod
     def by_external_id_and_provider(cls, external_id, provider_name,
                                     local_user_id=None):
         """
         Returns ExternalIdentity instance based on search params
 
         :param external_id:
         :param provider_name:
         :return: ExternalIdentity
         """
         query = cls.query()
         query = query.filter(cls.external_id == external_id)
         query = query.filter(cls.provider_name == provider_name)
         if local_user_id:
             query = query.filter(cls.local_user_id == local_user_id)
         return query.first()
 
     @classmethod
     def user_by_external_id_and_provider(cls, external_id, provider_name):
         """
         Returns User instance based on search params
 
         :param external_id:
         :param provider_name:
         :return: User
         """
         query = User.query()
         query = query.filter(cls.external_id == external_id)
         query = query.filter(cls.provider_name == provider_name)
         query = query.filter(User.user_id == cls.local_user_id)
         return query.first()
 
     @classmethod
     def by_local_user_id(cls, local_user_id):
         """
         Returns all tokens for user
 
         :param local_user_id:
         :return: ExternalIdentity
         """
         query = cls.query()
         query = query.filter(cls.local_user_id == local_user_id)
         return query
 
 
 class Integration(Base, BaseModel):
     __tablename__ = 'integrations'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True}
     )
 
     integration_id = Column('integration_id', Integer(), primary_key=True)
     integration_type = Column('integration_type', String(255))
     enabled = Column('enabled', Boolean(), nullable=False)
     name = Column('name', String(255), nullable=False)
     child_repos_only = Column('child_repos_only', Boolean(), nullable=False,
         default=False)
 
     settings = Column(
         'settings_json', MutationObj.as_mutable(
             JsonType(dialect_map=dict(mysql=UnicodeText(16384)))))
     repo_id = Column(
         'repo_id', Integer(), ForeignKey('repositories.repo_id'),
         nullable=True, unique=None, default=None)
     repo = relationship('Repository', lazy='joined')
 
     repo_group_id = Column(
         'repo_group_id', Integer(), ForeignKey('groups.group_id'),
         nullable=True, unique=None, default=None)
     repo_group = relationship('RepoGroup', lazy='joined')
 
     @property
     def scope(self):
         if self.repo:
             return repr(self.repo)
         if self.repo_group:
             if self.child_repos_only:
                 return repr(self.repo_group) + ' (child repos only)'
             else:
                 return repr(self.repo_group) + ' (recursive)'
         if self.child_repos_only:
             return 'root_repos'
         return 'global'
 
     def __repr__(self):
         return '<Integration(%r, %r)>' % (self.integration_type, self.scope)
 
 
 class RepoReviewRuleUser(Base, BaseModel):
     __tablename__ = 'repo_review_rules_users'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True,}
     )
     repo_review_rule_user_id = Column(
         'repo_review_rule_user_id', Integer(), primary_key=True)
     repo_review_rule_id = Column("repo_review_rule_id",
         Integer(), ForeignKey('repo_review_rules.repo_review_rule_id'))
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'),
         nullable=False)
     user = relationship('User')
 
 
 class RepoReviewRuleUserGroup(Base, BaseModel):
     __tablename__ = 'repo_review_rules_users_groups'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True,}
     )
     repo_review_rule_users_group_id = Column(
         'repo_review_rule_users_group_id', Integer(), primary_key=True)
     repo_review_rule_id = Column("repo_review_rule_id",
         Integer(), ForeignKey('repo_review_rules.repo_review_rule_id'))
     users_group_id = Column("users_group_id", Integer(),
         ForeignKey('users_groups.users_group_id'), nullable=False)
     users_group = relationship('UserGroup')
 
 
 class RepoReviewRule(Base, BaseModel):
     __tablename__ = 'repo_review_rules'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8', 'sqlite_autoincrement': True,}
     )
 
     repo_review_rule_id = Column(
         'repo_review_rule_id', Integer(), primary_key=True)
     repo_id = Column(
         "repo_id", Integer(), ForeignKey('repositories.repo_id'))
     repo = relationship('Repository', backref='review_rules')
 
     _branch_pattern = Column("branch_pattern", UnicodeText().with_variant(UnicodeText(255), 'mysql'),
         default=u'*') # glob
     _file_pattern = Column("file_pattern", UnicodeText().with_variant(UnicodeText(255), 'mysql'),
         default=u'*') # glob
 
     use_authors_for_review = Column("use_authors_for_review", Boolean(),
         nullable=False, default=False)
     rule_users = relationship('RepoReviewRuleUser')
     rule_user_groups = relationship('RepoReviewRuleUserGroup')
 
     @hybrid_property
     def branch_pattern(self):
         return self._branch_pattern or '*'
 
     def _validate_glob(self, value):
         re.compile('^' + glob2re(value) + '$')
 
     @branch_pattern.setter
     def branch_pattern(self, value):
         self._validate_glob(value)
         self._branch_pattern = value or '*'
 
     @hybrid_property
     def file_pattern(self):
         return self._file_pattern or '*'
 
     @file_pattern.setter
     def file_pattern(self, value):
         self._validate_glob(value)
         self._file_pattern = value or '*'
 
     def matches(self, branch, files_changed):
         """
         Check if this review rule matches a branch/files in a pull request
 
         :param branch: branch name for the commit
         :param files_changed: list of file paths changed in the pull request
         """
 
         branch = branch or ''
         files_changed = files_changed or []
 
         branch_matches = True
         if branch:
             branch_regex = re.compile('^' + glob2re(self.branch_pattern) + '$')
             branch_matches = bool(branch_regex.search(branch))
 
         files_matches = True
         if self.file_pattern != '*':
             files_matches = False
             file_regex = re.compile(glob2re(self.file_pattern))
             for filename in files_changed:
                 if file_regex.search(filename):
                     files_matches = True
                     break
 
         return branch_matches and files_matches
 
     @property
     def review_users(self):
         """ Returns the users which this rule applies to """
 
         users = set()
         users |= set([
             rule_user.user for rule_user in self.rule_users
             if rule_user.user.active])
         users |= set(
             member.user
             for rule_user_group in self.rule_user_groups
             for member in rule_user_group.users_group.members
             if member.user.active
         )
         return users
 
     def __repr__(self):
         return '<RepoReviewerRule(id=%r, repo=%r)>' % (
             self.repo_review_rule_id, self.repo)

rhodecode/model/pull_request.py

@@ -1,1180 +1,1188 b''
 # -*- coding: utf-8 -*-
 
 # Copyright (C) 2012-2016  RhodeCode GmbH
 #
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU Affero General Public License, version 3
 # (only), as published by the Free Software Foundation.
 #
 # 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 Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 # This program is dual-licensed. If you wish to learn more about the
 # RhodeCode Enterprise Edition, including its added features, Support services,
 # and proprietary license terms, please see https://rhodecode.com/licenses/
 
 
 """
 pull request model for RhodeCode
 """
 
 from collections import namedtuple
 import json
 import logging
 import datetime
 
 from pylons.i18n.translation import _
 from pylons.i18n.translation import lazy_ugettext
 
 from rhodecode.lib import helpers as h, hooks_utils, diffs
 from rhodecode.lib.compat import OrderedDict
 from rhodecode.lib.hooks_daemon import prepare_callback_daemon
 from rhodecode.lib.markup_renderer import (
     DEFAULT_COMMENTS_RENDERER, RstTemplateRenderer)
 from rhodecode.lib.utils import action_logger
 from rhodecode.lib.utils2 import safe_unicode, safe_str, md5_safe
 from rhodecode.lib.vcs.backends.base import (
     Reference, MergeResponse, MergeFailureReason)
 from rhodecode.lib.vcs.conf import settings as vcs_settings
 from rhodecode.lib.vcs.exceptions import (
     CommitDoesNotExistError, EmptyRepositoryError)
 from rhodecode.model import BaseModel
 from rhodecode.model.changeset_status import ChangesetStatusModel
 from rhodecode.model.comment import ChangesetCommentsModel
 from rhodecode.model.db import (
     PullRequest, PullRequestReviewers, ChangesetStatus,
     PullRequestVersion, ChangesetComment)
 from rhodecode.model.meta import Session
 from rhodecode.model.notification import NotificationModel, \
     EmailNotificationModel
 from rhodecode.model.scm import ScmModel
 from rhodecode.model.settings import VcsSettingsModel
 
 
 log = logging.getLogger(__name__)
 
 
 class PullRequestModel(BaseModel):
 
     cls = PullRequest
 
     DIFF_CONTEXT = 3
 
     MERGE_STATUS_MESSAGES = {
         MergeFailureReason.NONE: lazy_ugettext(
             'This pull request can be automatically merged.'),
         MergeFailureReason.UNKNOWN: lazy_ugettext(
             'This pull request cannot be merged because of an unhandled'
             ' exception.'),
         MergeFailureReason.MERGE_FAILED: lazy_ugettext(
             'This pull request cannot be merged because of conflicts.'),
         MergeFailureReason.PUSH_FAILED: lazy_ugettext(
             'This pull request could not be merged because push to target'
             ' failed.'),
         MergeFailureReason.TARGET_IS_NOT_HEAD: lazy_ugettext(
             'This pull request cannot be merged because the target is not a'
             ' head.'),
         MergeFailureReason.HG_SOURCE_HAS_MORE_BRANCHES: lazy_ugettext(
             'This pull request cannot be merged because the source contains'
             ' more branches than the target.'),
         MergeFailureReason.HG_TARGET_HAS_MULTIPLE_HEADS: lazy_ugettext(
             'This pull request cannot be merged because the target has'
             ' multiple heads.'),
         MergeFailureReason.TARGET_IS_LOCKED: lazy_ugettext(
             'This pull request cannot be merged because the target repository'
             ' is locked.'),
         MergeFailureReason.MISSING_COMMIT: lazy_ugettext(
             'This pull request cannot be merged because the target or the '
             'source reference is missing.'),
     }
 
     def __get_pull_request(self, pull_request):
         return self._get_instance(PullRequest, pull_request)
 
     def _check_perms(self, perms, pull_request, user, api=False):
         if not api:
             return h.HasRepoPermissionAny(*perms)(
                 user=user, repo_name=pull_request.target_repo.repo_name)
         else:
             return h.HasRepoPermissionAnyApi(*perms)(
                 user=user, repo_name=pull_request.target_repo.repo_name)
 
     def check_user_read(self, pull_request, user, api=False):
         _perms = ('repository.admin', 'repository.write', 'repository.read',)
         return self._check_perms(_perms, pull_request, user, api)
 
     def check_user_merge(self, pull_request, user, api=False):
         _perms = ('repository.admin', 'repository.write', 'hg.admin',)
         return self._check_perms(_perms, pull_request, user, api)
 
     def check_user_update(self, pull_request, user, api=False):
         owner = user.user_id == pull_request.user_id
         return self.check_user_merge(pull_request, user, api) or owner
 
     def check_user_change_status(self, pull_request, user, api=False):
         reviewer = user.user_id in [x.user_id for x in
                                     pull_request.reviewers]
         return self.check_user_update(pull_request, user, api) or reviewer
 
     def get(self, pull_request):
         return self.__get_pull_request(pull_request)
 
     def _prepare_get_all_query(self, repo_name, source=False, statuses=None,
                                opened_by=None, order_by=None,
                                order_dir='desc'):
         repo = self._get_repo(repo_name)
         q = PullRequest.query()
         # source or target
         if source:
             q = q.filter(PullRequest.source_repo == repo)
         else:
             q = q.filter(PullRequest.target_repo == repo)
 
         # closed,opened
         if statuses:
             q = q.filter(PullRequest.status.in_(statuses))
 
         # opened by filter
         if opened_by:
             q = q.filter(PullRequest.user_id.in_(opened_by))
 
         if order_by:
             order_map = {
                 'name_raw': PullRequest.pull_request_id,
                 'title': PullRequest.title,
                 'updated_on_raw': PullRequest.updated_on
             }
             if order_dir == 'asc':
                 q = q.order_by(order_map[order_by].asc())
             else:
                 q = q.order_by(order_map[order_by].desc())
 
         return q
 
     def count_all(self, repo_name, source=False, statuses=None,
                   opened_by=None):
         """
         Count the number of pull requests for a specific repository.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :returns: int number of pull requests
         """
         q = self._prepare_get_all_query(
             repo_name, source=source, statuses=statuses, opened_by=opened_by)
 
         return q.count()
 
     def get_all(self, repo_name, source=False, statuses=None, opened_by=None,
                 offset=0, length=None, order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         q = self._prepare_get_all_query(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         if length:
             pull_requests = q.limit(length).offset(offset).all()
         else:
             pull_requests = q.all()
 
         return pull_requests
 
     def count_awaiting_review(self, repo_name, source=False, statuses=None,
                               opened_by=None):
         """
         Count the number of pull requests for a specific repository that are
         awaiting review.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :returns: int number of pull requests
         """
         pull_requests = self.get_awaiting_review(
             repo_name, source=source, statuses=statuses, opened_by=opened_by)
 
         return len(pull_requests)
 
     def get_awaiting_review(self, repo_name, source=False, statuses=None,
                             opened_by=None, offset=0, length=None,
                             order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository that are awaiting
         review.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         pull_requests = self.get_all(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         _filtered_pull_requests = []
         for pr in pull_requests:
             status = pr.calculated_review_status()
             if status in [ChangesetStatus.STATUS_NOT_REVIEWED,
                           ChangesetStatus.STATUS_UNDER_REVIEW]:
                 _filtered_pull_requests.append(pr)
         if length:
             return _filtered_pull_requests[offset:offset+length]
         else:
             return _filtered_pull_requests
 
     def count_awaiting_my_review(self, repo_name, source=False, statuses=None,
                                  opened_by=None, user_id=None):
         """
         Count the number of pull requests for a specific repository that are
         awaiting review from a specific user.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param user_id: reviewer user of the pull request
         :returns: int number of pull requests
         """
         pull_requests = self.get_awaiting_my_review(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             user_id=user_id)
 
         return len(pull_requests)
 
     def get_awaiting_my_review(self, repo_name, source=False, statuses=None,
                                opened_by=None, user_id=None, offset=0,
                                length=None, order_by=None, order_dir='desc'):
         """
         Get all pull requests for a specific repository that are awaiting
         review from a specific user.
 
         :param repo_name: target or source repo
         :param source: boolean flag to specify if repo_name refers to source
         :param statuses: list of pull request statuses
         :param opened_by: author user of the pull request
         :param user_id: reviewer user of the pull request
         :param offset: pagination offset
         :param length: length of returned list
         :param order_by: order of the returned list
         :param order_dir: 'asc' or 'desc' ordering direction
         :returns: list of pull requests
         """
         pull_requests = self.get_all(
             repo_name, source=source, statuses=statuses, opened_by=opened_by,
             order_by=order_by, order_dir=order_dir)
 
         _my = PullRequestModel().get_not_reviewed(user_id)
         my_participation = []
         for pr in pull_requests:
             if pr in _my:
                 my_participation.append(pr)
         _filtered_pull_requests = my_participation
         if length:
             return _filtered_pull_requests[offset:offset+length]
         else:
             return _filtered_pull_requests
 
     def get_not_reviewed(self, user_id):
         return [
             x.pull_request for x in PullRequestReviewers.query().filter(
                 PullRequestReviewers.user_id == user_id).all()
         ]
 
     def get_versions(self, pull_request):
         """
         returns version of pull request sorted by ID descending
         """
         return PullRequestVersion.query()\
             .filter(PullRequestVersion.pull_request == pull_request)\
             .order_by(PullRequestVersion.pull_request_version_id.asc())\
             .all()
 
     def create(self, created_by, source_repo, source_ref, target_repo,
         target_ref, revisions, reviewers, title, description=None):
         created_by_user = self._get_user(created_by)
         source_repo = self._get_repo(source_repo)
         target_repo = self._get_repo(target_repo)
 
         pull_request = PullRequest()
         pull_request.source_repo = source_repo
         pull_request.source_ref = source_ref
         pull_request.target_repo = target_repo
         pull_request.target_ref = target_ref
         pull_request.revisions = revisions
         pull_request.title = title
         pull_request.description = description
         pull_request.author = created_by_user
 
         Session().add(pull_request)
         Session().flush()
 
         reviewer_ids = set()
         # members / reviewers
         for reviewer_object in reviewers:
             if isinstance(reviewer_object, tuple):
                 user_id, reasons = reviewer_object
             else:
                 user_id, reasons = reviewer_object, []
 
             user = self._get_user(user_id)
             reviewer_ids.add(user.user_id)
 
             reviewer = PullRequestReviewers(user, pull_request, reasons)
             Session().add(reviewer)
 
         # Set approval status to "Under Review" for all commits which are
         # part of this pull request.
         ChangesetStatusModel().set_status(
             repo=target_repo,
             status=ChangesetStatus.STATUS_UNDER_REVIEW,
             user=created_by_user,
             pull_request=pull_request
         )
 
         self.notify_reviewers(pull_request, reviewer_ids)
         self._trigger_pull_request_hook(
             pull_request, created_by_user, 'create')
 
         return pull_request
 
     def _trigger_pull_request_hook(self, pull_request, user, action):
         pull_request = self.__get_pull_request(pull_request)
         target_scm = pull_request.target_repo.scm_instance()
         if action == 'create':
             trigger_hook = hooks_utils.trigger_log_create_pull_request_hook
         elif action == 'merge':
             trigger_hook = hooks_utils.trigger_log_merge_pull_request_hook
         elif action == 'close':
             trigger_hook = hooks_utils.trigger_log_close_pull_request_hook
         elif action == 'review_status_change':
             trigger_hook = hooks_utils.trigger_log_review_pull_request_hook
         elif action == 'update':
             trigger_hook = hooks_utils.trigger_log_update_pull_request_hook
         else:
             return
 
         trigger_hook(
             username=user.username,
             repo_name=pull_request.target_repo.repo_name,
             repo_alias=target_scm.alias,
             pull_request=pull_request)
 
     def _get_commit_ids(self, pull_request):
         """
         Return the commit ids of the merged pull request.
 
         This method is not dealing correctly yet with the lack of autoupdates
         nor with the implicit target updates.
         For example: if a commit in the source repo is already in the target it
         will be reported anyways.
         """
         merge_rev = pull_request.merge_rev
         if merge_rev is None:
             raise ValueError('This pull request was not merged yet')
 
         commit_ids = list(pull_request.revisions)
         if merge_rev not in commit_ids:
             commit_ids.append(merge_rev)
 
         return commit_ids
 
     def merge(self, pull_request, user, extras):
         log.debug("Merging pull request %s", pull_request.pull_request_id)
         merge_state = self._merge_pull_request(pull_request, user, extras)
         if merge_state.executed:
             log.debug(
                 "Merge was successful, updating the pull request comments.")
             self._comment_and_close_pr(pull_request, user, merge_state)
             self._log_action('user_merged_pull_request', user, pull_request)
         else:
             log.warn("Merge failed, not updating the pull request.")
         return merge_state
 
     def _merge_pull_request(self, pull_request, user, extras):
         target_vcs = pull_request.target_repo.scm_instance()
         source_vcs = pull_request.source_repo.scm_instance()
         target_ref = self._refresh_reference(
             pull_request.target_ref_parts, target_vcs)
 
         message = _(
             'Merge pull request #%(pr_id)s from '
             '%(source_repo)s %(source_ref_name)s\n\n %(pr_title)s') % {
                 'pr_id': pull_request.pull_request_id,
                 'source_repo': source_vcs.name,
                 'source_ref_name': pull_request.source_ref_parts.name,
                 'pr_title': pull_request.title
             }
 
         workspace_id = self._workspace_id(pull_request)
         use_rebase = self._use_rebase_for_merging(pull_request)
 
         callback_daemon, extras = prepare_callback_daemon(
             extras, protocol=vcs_settings.HOOKS_PROTOCOL,
             use_direct_calls=vcs_settings.HOOKS_DIRECT_CALLS)
 
         with callback_daemon:
             # TODO: johbo: Implement a clean way to run a config_override
             # for a single call.
             target_vcs.config.set(
                 'rhodecode', 'RC_SCM_DATA', json.dumps(extras))
             merge_state = target_vcs.merge(
                 target_ref, source_vcs, pull_request.source_ref_parts,
                 workspace_id, user_name=user.username,
                 user_email=user.email, message=message, use_rebase=use_rebase)
         return merge_state
 
     def _comment_and_close_pr(self, pull_request, user, merge_state):
         pull_request.merge_rev = merge_state.merge_commit_id
         pull_request.updated_on = datetime.datetime.now()
 
         ChangesetCommentsModel().create(
             text=unicode(_('Pull request merged and closed')),
             repo=pull_request.target_repo.repo_id,
             user=user.user_id,
             pull_request=pull_request.pull_request_id,
             f_path=None,
             line_no=None,
             closing_pr=True
         )
 
         Session().add(pull_request)
         Session().flush()
         # TODO: paris: replace invalidation with less radical solution
         ScmModel().mark_for_invalidation(
             pull_request.target_repo.repo_name)
         self._trigger_pull_request_hook(pull_request, user, 'merge')
 
     def has_valid_update_type(self, pull_request):
         source_ref_type = pull_request.source_ref_parts.type
         return source_ref_type in ['book', 'branch', 'tag']
 
     def update_commits(self, pull_request):
         """
         Get the updated list of commits for the pull request
         and return the new pull request version and the list
         of commits processed by this update action
         """
 
         pull_request = self.__get_pull_request(pull_request)
         source_ref_type = pull_request.source_ref_parts.type
         source_ref_name = pull_request.source_ref_parts.name
         source_ref_id = pull_request.source_ref_parts.commit_id
 
         if not self.has_valid_update_type(pull_request):
             log.debug(
                 "Skipping update of pull request %s due to ref type: %s",
                 pull_request, source_ref_type)
             return (None, None)
 
         source_repo = pull_request.source_repo.scm_instance()
         source_commit = source_repo.get_commit(commit_id=source_ref_name)
         if source_ref_id == source_commit.raw_id:
             log.debug("Nothing changed in pull request %s", pull_request)
             return (None, None)
 
         # Finally there is a need for an update
         pull_request_version = self._create_version_from_snapshot(pull_request)
         self._link_comments_to_version(pull_request_version)
 
         target_ref_type = pull_request.target_ref_parts.type
         target_ref_name = pull_request.target_ref_parts.name
         target_ref_id = pull_request.target_ref_parts.commit_id
         target_repo = pull_request.target_repo.scm_instance()
 
         if target_ref_type in ('tag', 'branch', 'book'):
             target_commit = target_repo.get_commit(target_ref_name)
         else:
             target_commit = target_repo.get_commit(target_ref_id)
 
         # re-compute commit ids
         old_commit_ids = set(pull_request.revisions)
         pre_load = ["author", "branch", "date", "message"]
         commit_ranges = target_repo.compare(
             target_commit.raw_id, source_commit.raw_id, source_repo, merge=True,
             pre_load=pre_load)
 
         ancestor = target_repo.get_common_ancestor(
             target_commit.raw_id, source_commit.raw_id, source_repo)
 
         pull_request.source_ref = '%s:%s:%s' % (
             source_ref_type, source_ref_name, source_commit.raw_id)
         pull_request.target_ref = '%s:%s:%s' % (
             target_ref_type, target_ref_name, ancestor)
         pull_request.revisions = [
             commit.raw_id for commit in reversed(commit_ranges)]
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
         new_commit_ids = set(pull_request.revisions)
 
         changes = self._calculate_commit_id_changes(
             old_commit_ids, new_commit_ids)
 
         old_diff_data, new_diff_data = self._generate_update_diffs(
             pull_request, pull_request_version)
 
         ChangesetCommentsModel().outdate_comments(
             pull_request, old_diff_data=old_diff_data,
             new_diff_data=new_diff_data)
 
         file_changes = self._calculate_file_changes(
             old_diff_data, new_diff_data)
 
         # Add an automatic comment to the pull request
         update_comment = ChangesetCommentsModel().create(
             text=self._render_update_message(changes, file_changes),
             repo=pull_request.target_repo,
             user=pull_request.author,
             pull_request=pull_request,
             send_email=False, renderer=DEFAULT_COMMENTS_RENDERER)
 
         # Update status to "Under Review" for added commits
         for commit_id in changes.added:
             ChangesetStatusModel().set_status(
                 repo=pull_request.source_repo,
                 status=ChangesetStatus.STATUS_UNDER_REVIEW,
                 comment=update_comment,
                 user=pull_request.author,
                 pull_request=pull_request,
                 revision=commit_id)
 
         log.debug(
             'Updated pull request %s, added_ids: %s, common_ids: %s, '
             'removed_ids: %s', pull_request.pull_request_id,
             changes.added, changes.common, changes.removed)
         log.debug('Updated pull request with the following file changes: %s',
                   file_changes)
 
         log.info(
             "Updated pull request %s from commit %s to commit %s, "
             "stored new version %s of this pull request.",
             pull_request.pull_request_id, source_ref_id,
             pull_request.source_ref_parts.commit_id,
             pull_request_version.pull_request_version_id)
         Session().commit()
         self._trigger_pull_request_hook(pull_request, pull_request.author,
                                         'update')
 
         return (pull_request_version, changes)
 
     def _create_version_from_snapshot(self, pull_request):
         version = PullRequestVersion()
         version.title = pull_request.title
         version.description = pull_request.description
         version.status = pull_request.status
         version.created_on = pull_request.created_on
         version.updated_on = pull_request.updated_on
         version.user_id = pull_request.user_id
         version.source_repo = pull_request.source_repo
         version.source_ref = pull_request.source_ref
         version.target_repo = pull_request.target_repo
         version.target_ref = pull_request.target_ref
 
         version._last_merge_source_rev = pull_request._last_merge_source_rev
         version._last_merge_target_rev = pull_request._last_merge_target_rev
         version._last_merge_status = pull_request._last_merge_status
         version.merge_rev = pull_request.merge_rev
 
         version.revisions = pull_request.revisions
         version.pull_request = pull_request
         Session().add(version)
         Session().flush()
 
         return version
 
     def _generate_update_diffs(self, pull_request, pull_request_version):
         diff_context = (
             self.DIFF_CONTEXT +
             ChangesetCommentsModel.needed_extra_diff_context())
         old_diff = self._get_diff_from_pr_or_version(
             pull_request_version, context=diff_context)
         new_diff = self._get_diff_from_pr_or_version(
             pull_request, context=diff_context)
 
         old_diff_data = diffs.DiffProcessor(old_diff)
         old_diff_data.prepare()
         new_diff_data = diffs.DiffProcessor(new_diff)
         new_diff_data.prepare()
 
         return old_diff_data, new_diff_data
 
     def _link_comments_to_version(self, pull_request_version):
         """
         Link all unlinked comments of this pull request to the given version.
 
         :param pull_request_version: The `PullRequestVersion` to which
             the comments shall be linked.
 
         """
         pull_request = pull_request_version.pull_request
         comments = ChangesetComment.query().filter(
             # TODO: johbo: Should we query for the repo at all here?
             # Pending decision on how comments of PRs are to be related
             # to either the source repo, the target repo or no repo at all.
             ChangesetComment.repo_id == pull_request.target_repo.repo_id,
             ChangesetComment.pull_request == pull_request,
             ChangesetComment.pull_request_version == None)
 
         # TODO: johbo: Find out why this breaks if it is done in a bulk
         # operation.
         for comment in comments:
             comment.pull_request_version_id = (
                 pull_request_version.pull_request_version_id)
             Session().add(comment)
 
     def _calculate_commit_id_changes(self, old_ids, new_ids):
         added = new_ids.difference(old_ids)
         common = old_ids.intersection(new_ids)
         removed = old_ids.difference(new_ids)
         return ChangeTuple(added, common, removed)
 
     def _calculate_file_changes(self, old_diff_data, new_diff_data):
 
         old_files = OrderedDict()
         for diff_data in old_diff_data.parsed_diff:
             old_files[diff_data['filename']] = md5_safe(diff_data['raw_diff'])
 
         added_files = []
         modified_files = []
         removed_files = []
         for diff_data in new_diff_data.parsed_diff:
             new_filename = diff_data['filename']
             new_hash = md5_safe(diff_data['raw_diff'])
 
             old_hash = old_files.get(new_filename)
             if not old_hash:
                 # file is not present in old diff, means it's added
                 added_files.append(new_filename)
             else:
                 if new_hash != old_hash:
                     modified_files.append(new_filename)
                 # now remove a file from old, since we have seen it already
                 del old_files[new_filename]
 
         # removed files is when there are present in old, but not in NEW,
         # since we remove old files that are present in new diff, left-overs
         # if any should be the removed files
         removed_files.extend(old_files.keys())
 
         return FileChangeTuple(added_files, modified_files, removed_files)
 
     def _render_update_message(self, changes, file_changes):
         """
         render the message using DEFAULT_COMMENTS_RENDERER (RST renderer),
         so it's always looking the same disregarding on which default
         renderer system is using.
 
         :param changes: changes named tuple
         :param file_changes: file changes named tuple
 
         """
         new_status = ChangesetStatus.get_status_lbl(
             ChangesetStatus.STATUS_UNDER_REVIEW)
 
         changed_files = (
             file_changes.added + file_changes.modified + file_changes.removed)
 
         params = {
             'under_review_label': new_status,
             'added_commits': changes.added,
             'removed_commits': changes.removed,
             'changed_files': changed_files,
             'added_files': file_changes.added,
             'modified_files': file_changes.modified,
             'removed_files': file_changes.removed,
         }
         renderer = RstTemplateRenderer()
         return renderer.render('pull_request_update.mako', **params)
 
     def edit(self, pull_request, title, description):
         pull_request = self.__get_pull_request(pull_request)
         if pull_request.is_closed():
             raise ValueError('This pull request is closed')
         if title:
             pull_request.title = title
         pull_request.description = description
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
 
     def update_reviewers(self, pull_request, reviewer_data):
         """
         Update the reviewers in the pull request
 
         :param pull_request: the pr to update
         :param reviewer_data: list of tuples [(user, ['reason1', 'reason2'])]
         """
 
         reviewers_reasons = {}
         for user_id, reasons in reviewer_data:
             if isinstance(user_id, (int, basestring)):
                 user_id = self._get_user(user_id).user_id
             reviewers_reasons[user_id] = reasons
 
         reviewers_ids = set(reviewers_reasons.keys())
         pull_request = self.__get_pull_request(pull_request)
         current_reviewers = PullRequestReviewers.query()\
             .filter(PullRequestReviewers.pull_request ==
                     pull_request).all()
         current_reviewers_ids = set([x.user.user_id for x in current_reviewers])
 
         ids_to_add = reviewers_ids.difference(current_reviewers_ids)
         ids_to_remove = current_reviewers_ids.difference(reviewers_ids)
 
         log.debug("Adding %s reviewers", ids_to_add)
         log.debug("Removing %s reviewers", ids_to_remove)
         changed = False
         for uid in ids_to_add:
             changed = True
             _usr = self._get_user(uid)
             reasons = reviewers_reasons[uid]
             reviewer = PullRequestReviewers(_usr, pull_request, reasons)
             Session().add(reviewer)
 
         self.notify_reviewers(pull_request, ids_to_add)
 
         for uid in ids_to_remove:
             changed = True
             reviewer = PullRequestReviewers.query()\
                 .filter(PullRequestReviewers.user_id == uid,
                         PullRequestReviewers.pull_request == pull_request)\
                 .scalar()
             if reviewer:
                 Session().delete(reviewer)
         if changed:
             pull_request.updated_on = datetime.datetime.now()
             Session().add(pull_request)
 
         return ids_to_add, ids_to_remove
 
     def get_url(self, pull_request):
         return h.url('pullrequest_show',
                      repo_name=safe_str(pull_request.target_repo.repo_name),
                      pull_request_id=pull_request.pull_request_id,
                      qualified=True)
 
     def get_shadow_clone_url(self, pull_request):
-        return u'{url}/repository'.format(url=self.get_url(pull_request))
+        """
+        Returns qualified url pointing to the shadow repository. If this pull
+        request is closed there is no shadow repository and ``None`` will be
+        returned.
+        """
+        if pull_request.is_closed():
+            return None
+        else:
+            return u'{url}/repository'.format(url=self.get_url(pull_request))
 
     def notify_reviewers(self, pull_request, reviewers_ids):
         # notification to reviewers
         if not reviewers_ids:
             return
 
         pull_request_obj = pull_request
         # get the current participants of this pull request
         recipients = reviewers_ids
         notification_type = EmailNotificationModel.TYPE_PULL_REQUEST
 
         pr_source_repo = pull_request_obj.source_repo
         pr_target_repo = pull_request_obj.target_repo
 
         pr_url = h.url(
             'pullrequest_show',
             repo_name=pr_target_repo.repo_name,
             pull_request_id=pull_request_obj.pull_request_id,
             qualified=True,)
 
         # set some variables for email notification
         pr_target_repo_url = h.url(
             'summary_home',
             repo_name=pr_target_repo.repo_name,
             qualified=True)
 
         pr_source_repo_url = h.url(
             'summary_home',
             repo_name=pr_source_repo.repo_name,
             qualified=True)
 
         # pull request specifics
         pull_request_commits = [
             (x.raw_id, x.message)
             for x in map(pr_source_repo.get_commit, pull_request.revisions)]
 
         kwargs = {
             'user': pull_request.author,
             'pull_request': pull_request_obj,
             'pull_request_commits': pull_request_commits,
 
             'pull_request_target_repo': pr_target_repo,
             'pull_request_target_repo_url': pr_target_repo_url,
 
             'pull_request_source_repo': pr_source_repo,
             'pull_request_source_repo_url': pr_source_repo_url,
 
             'pull_request_url': pr_url,
         }
 
         # pre-generate the subject for notification itself
         (subject,
          _h, _e,  # we don't care about those
          body_plaintext) = EmailNotificationModel().render_email(
             notification_type, **kwargs)
 
         # create notification objects, and emails
         NotificationModel().create(
             created_by=pull_request.author,
             notification_subject=subject,
             notification_body=body_plaintext,
             notification_type=notification_type,
             recipients=recipients,
             email_kwargs=kwargs,
         )
 
     def delete(self, pull_request):
         pull_request = self.__get_pull_request(pull_request)
         self._cleanup_merge_workspace(pull_request)
         Session().delete(pull_request)
 
     def close_pull_request(self, pull_request, user):
         pull_request = self.__get_pull_request(pull_request)
         self._cleanup_merge_workspace(pull_request)
         pull_request.status = PullRequest.STATUS_CLOSED
         pull_request.updated_on = datetime.datetime.now()
         Session().add(pull_request)
         self._trigger_pull_request_hook(
             pull_request, pull_request.author, 'close')
         self._log_action('user_closed_pull_request', user, pull_request)
 
     def close_pull_request_with_comment(self, pull_request, user, repo,
                                         message=None):
         status = ChangesetStatus.STATUS_REJECTED
 
         if not message:
             message = (
                 _('Status change %(transition_icon)s %(status)s') % {
                     'transition_icon': '>',
                     'status': ChangesetStatus.get_status_lbl(status)})
 
         internal_message = _('Closing with') + ' ' + message
 
         comm = ChangesetCommentsModel().create(
             text=internal_message,
             repo=repo.repo_id,
             user=user.user_id,
             pull_request=pull_request.pull_request_id,
             f_path=None,
             line_no=None,
             status_change=ChangesetStatus.get_status_lbl(status),
             status_change_type=status,
             closing_pr=True
         )
 
         ChangesetStatusModel().set_status(
             repo.repo_id,
             status,
             user.user_id,
             comm,
             pull_request=pull_request.pull_request_id
         )
         Session().flush()
 
         PullRequestModel().close_pull_request(
             pull_request.pull_request_id, user)
 
     def merge_status(self, pull_request):
         if not self._is_merge_enabled(pull_request):
             return False, _('Server-side pull request merging is disabled.')
         if pull_request.is_closed():
             return False, _('This pull request is closed.')
         merge_possible, msg = self._check_repo_requirements(
             target=pull_request.target_repo, source=pull_request.source_repo)
         if not merge_possible:
             return merge_possible, msg
 
         try:
             resp = self._try_merge(pull_request)
             status = resp.possible, self.merge_status_message(
                 resp.failure_reason)
         except NotImplementedError:
             status = False, _('Pull request merging is not supported.')
 
         return status
 
     def _check_repo_requirements(self, target, source):
         """
         Check if `target` and `source` have compatible requirements.
 
         Currently this is just checking for largefiles.
         """
         target_has_largefiles = self._has_largefiles(target)
         source_has_largefiles = self._has_largefiles(source)
         merge_possible = True
         message = u''
 
         if target_has_largefiles != source_has_largefiles:
             merge_possible = False
             if source_has_largefiles:
                 message = _(
                     'Target repository large files support is disabled.')
             else:
                 message = _(
                     'Source repository large files support is disabled.')
 
         return merge_possible, message
 
     def _has_largefiles(self, repo):
         largefiles_ui = VcsSettingsModel(repo=repo).get_ui_settings(
             'extensions', 'largefiles')
         return largefiles_ui and largefiles_ui[0].active
 
     def _try_merge(self, pull_request):
         """
         Try to merge the pull request and return the merge status.
         """
         log.debug(
             "Trying out if the pull request %s can be merged.",
             pull_request.pull_request_id)
         target_vcs = pull_request.target_repo.scm_instance()
         target_ref = self._refresh_reference(
             pull_request.target_ref_parts, target_vcs)
 
         target_locked = pull_request.target_repo.locked
         if target_locked and target_locked[0]:
             log.debug("The target repository is locked.")
             merge_state = MergeResponse(
                 False, False, None, MergeFailureReason.TARGET_IS_LOCKED)
         elif self._needs_merge_state_refresh(pull_request, target_ref):
             log.debug("Refreshing the merge status of the repository.")
             merge_state = self._refresh_merge_state(
                 pull_request, target_vcs, target_ref)
         else:
             possible = pull_request.\
                 _last_merge_status == MergeFailureReason.NONE
             merge_state = MergeResponse(
                 possible, False, None, pull_request._last_merge_status)
         log.debug("Merge response: %s", merge_state)
         return merge_state
 
     def _refresh_reference(self, reference, vcs_repository):
         if reference.type in ('branch', 'book'):
             name_or_id = reference.name
         else:
             name_or_id = reference.commit_id
         refreshed_commit = vcs_repository.get_commit(name_or_id)
         refreshed_reference = Reference(
             reference.type, reference.name, refreshed_commit.raw_id)
         return refreshed_reference
 
     def _needs_merge_state_refresh(self, pull_request, target_reference):
         return not(
             pull_request.revisions and
             pull_request.revisions[0] == pull_request._last_merge_source_rev and
             target_reference.commit_id == pull_request._last_merge_target_rev)
 
     def _refresh_merge_state(self, pull_request, target_vcs, target_reference):
         workspace_id = self._workspace_id(pull_request)
         source_vcs = pull_request.source_repo.scm_instance()
         use_rebase = self._use_rebase_for_merging(pull_request)
         merge_state = target_vcs.merge(
             target_reference, source_vcs, pull_request.source_ref_parts,
             workspace_id, dry_run=True, use_rebase=use_rebase)
 
         # Do not store the response if there was an unknown error.
         if merge_state.failure_reason != MergeFailureReason.UNKNOWN:
             pull_request._last_merge_source_rev = pull_request.\
                 source_ref_parts.commit_id
             pull_request._last_merge_target_rev = target_reference.commit_id
             pull_request._last_merge_status = (
                 merge_state.failure_reason)
             Session().add(pull_request)
             Session().flush()
 
         return merge_state
 
     def _workspace_id(self, pull_request):
         workspace_id = 'pr-%s' % pull_request.pull_request_id
         return workspace_id
 
     def merge_status_message(self, status_code):
         """
         Return a human friendly error message for the given merge status code.
         """
         return self.MERGE_STATUS_MESSAGES[status_code]
 
     def generate_repo_data(self, repo, commit_id=None, branch=None,
                            bookmark=None):
         all_refs, selected_ref = \
             self._get_repo_pullrequest_sources(
                 repo.scm_instance(), commit_id=commit_id,
                 branch=branch, bookmark=bookmark)
 
         refs_select2 = []
         for element in all_refs:
             children = [{'id': x[0], 'text': x[1]} for x in element[0]]
             refs_select2.append({'text': element[1], 'children': children})
 
         return {
             'user': {
                 'user_id': repo.user.user_id,
                 'username': repo.user.username,
                 'firstname': repo.user.firstname,
                 'lastname': repo.user.lastname,
                 'gravatar_link': h.gravatar_url(repo.user.email, 14),
             },
             'description': h.chop_at_smart(repo.description, '\n'),
             'refs': {
                 'all_refs': all_refs,
                 'selected_ref': selected_ref,
                 'select2_refs': refs_select2
             }
         }
 
     def generate_pullrequest_title(self, source, source_ref, target):
         return u'{source}#{at_ref} to {target}'.format(
             source=source,
             at_ref=source_ref,
             target=target,
         )
 
     def _cleanup_merge_workspace(self, pull_request):
         # Merging related cleanup
         target_scm = pull_request.target_repo.scm_instance()
         workspace_id = 'pr-%s' % pull_request.pull_request_id
 
         try:
             target_scm.cleanup_merge_workspace(workspace_id)
         except NotImplementedError:
             pass
 
     def _get_repo_pullrequest_sources(
             self, repo, commit_id=None, branch=None, bookmark=None):
         """
         Return a structure with repo's interesting commits, suitable for
         the selectors in pullrequest controller
 
         :param commit_id: a commit that must be in the list somehow
             and selected by default
         :param branch: a branch that must be in the list and selected
             by default - even if closed
         :param bookmark: a bookmark that must be in the list and selected
         """
 
         commit_id = safe_str(commit_id) if commit_id else None
         branch = safe_str(branch) if branch else None
         bookmark = safe_str(bookmark) if bookmark else None
 
         selected = None
 
         # order matters: first source that has commit_id in it will be selected
         sources = []
         sources.append(('book', repo.bookmarks.items(), _('Bookmarks'), bookmark))
         sources.append(('branch', repo.branches.items(), _('Branches'), branch))
 
         if commit_id:
             ref_commit = (h.short_id(commit_id), commit_id)
             sources.append(('rev', [ref_commit], _('Commit IDs'), commit_id))
 
         sources.append(
             ('branch', repo.branches_closed.items(), _('Closed Branches'), branch),
         )
 
         groups = []
         for group_key, ref_list, group_name, match in sources:
             group_refs = []
             for ref_name, ref_id in ref_list:
                 ref_key = '%s:%s:%s' % (group_key, ref_name, ref_id)
                 group_refs.append((ref_key, ref_name))
 
                 if not selected:
                     if set([commit_id, match]) & set([ref_id, ref_name]):
                         selected = ref_key
 
             if group_refs:
                 groups.append((group_refs, group_name))
 
         if not selected:
             ref = commit_id or branch or bookmark
             if ref:
                 raise CommitDoesNotExistError(
                     'No commit refs could be found matching: %s' % ref)
             elif repo.DEFAULT_BRANCH_NAME in repo.branches:
                 selected = 'branch:%s:%s' % (
                     repo.DEFAULT_BRANCH_NAME,
                     repo.branches[repo.DEFAULT_BRANCH_NAME]
                 )
             elif repo.commit_ids:
                 rev = repo.commit_ids[0]
                 selected = 'rev:%s:%s' % (rev, rev)
             else:
                 raise EmptyRepositoryError()
         return groups, selected
 
     def get_diff(self, pull_request, context=DIFF_CONTEXT):
         pull_request = self.__get_pull_request(pull_request)
         return self._get_diff_from_pr_or_version(pull_request, context=context)
 
     def _get_diff_from_pr_or_version(self, pr_or_version, context):
         source_repo = pr_or_version.source_repo
 
         # we swap org/other ref since we run a simple diff on one repo
         target_ref_id = pr_or_version.target_ref_parts.commit_id
         source_ref_id = pr_or_version.source_ref_parts.commit_id
         target_commit = source_repo.get_commit(
             commit_id=safe_str(target_ref_id))
         source_commit = source_repo.get_commit(commit_id=safe_str(source_ref_id))
         vcs_repo = source_repo.scm_instance()
 
         # TODO: johbo: In the context of an update, we cannot reach
         # the old commit anymore with our normal mechanisms. It needs
         # some sort of special support in the vcs layer to avoid this
         # workaround.
         if (source_commit.raw_id == vcs_repo.EMPTY_COMMIT_ID and
                 vcs_repo.alias == 'git'):
             source_commit.raw_id = safe_str(source_ref_id)
 
         log.debug('calculating diff between '
                   'source_ref:%s and target_ref:%s for repo `%s`',
                   target_ref_id, source_ref_id,
                   safe_unicode(vcs_repo.path))
 
         vcs_diff = vcs_repo.get_diff(
             commit1=target_commit, commit2=source_commit, context=context)
         return vcs_diff
 
     def _is_merge_enabled(self, pull_request):
         settings_model = VcsSettingsModel(repo=pull_request.target_repo)
         settings = settings_model.get_general_settings()
         return settings.get('rhodecode_pr_merge_enabled', False)
 
     def _use_rebase_for_merging(self, pull_request):
         settings_model = VcsSettingsModel(repo=pull_request.target_repo)
         settings = settings_model.get_general_settings()
         return settings.get('rhodecode_hg_use_rebase_for_merging', False)
 
     def _log_action(self, action, user, pull_request):
         action_logger(
             user,
             '{action}:{pr_id}'.format(
                 action=action, pr_id=pull_request.pull_request_id),
             pull_request.target_repo)
 
 
 ChangeTuple = namedtuple('ChangeTuple',
                          ['added', 'common', 'removed'])
 
 FileChangeTuple = namedtuple('FileChangeTuple',
                              ['added', 'modified', 'removed'])