invalidate: clear CacheInvalidation when upgrading

rhodecode/lib/db_manage.py

@@ -1,710 +1,714 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.lib.db_manage
     ~~~~~~~~~~~~~~~~~~~~~~~
 
     Database creation, and setup module for RhodeCode. Used for creation
     of database as well as for migration operations
 
     :created_on: Apr 10, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 import sys
 import uuid
 import logging
 from os.path import dirname as dn, join as jn
 
 from rhodecode import __dbversion__, __py_version__
 
 from rhodecode.model.user import UserModel
 from rhodecode.lib.utils import ask_ok
 from rhodecode.model import init_model
 from rhodecode.model.db import User, Permission, RhodeCodeUi, \
     RhodeCodeSetting, UserToPerm, DbMigrateVersion, RepoGroup, \
-    UserRepoGroupToPerm
+    UserRepoGroupToPerm, CacheInvalidation
 
 from sqlalchemy.engine import create_engine
 from rhodecode.model.repos_group import ReposGroupModel
 #from rhodecode.model import meta
 from rhodecode.model.meta import Session, Base
 from rhodecode.model.repo import RepoModel
 from rhodecode.model.permission import PermissionModel
 
 
 log = logging.getLogger(__name__)
 
 
 def notify(msg):
     """
     Notification for migrations messages
     """
     ml = len(msg) + (4 * 2)
     print >> sys.stdout, ('*** %s ***\n%s' % (msg, '*' * ml)).upper()
 
 
 class DbManage(object):
     def __init__(self, log_sql, dbconf, root, tests=False, cli_args={}):
         self.dbname = dbconf.split('/')[-1]
         self.tests = tests
         self.root = root
         self.dburi = dbconf
         self.log_sql = log_sql
         self.db_exists = False
         self.cli_args = cli_args
         self.init_db()
 
         force_ask = self.cli_args.get('force_ask')
         if force_ask is not None:
             global ask_ok
             ask_ok = lambda *args, **kwargs: force_ask
 
     def init_db(self):
         engine = create_engine(self.dburi, echo=self.log_sql)
         init_model(engine)
         self.sa = Session()
 
     def create_tables(self, override=False):
         """
         Create a auth database
         """
 
         log.info("Any existing database is going to be destroyed")
         if self.tests:
             destroy = True
         else:
             destroy = ask_ok('Are you sure to destroy old database ? [y/n]')
         if not destroy:
             sys.exit('Nothing tables created')
         if destroy:
             Base.metadata.drop_all()
 
         checkfirst = not override
         Base.metadata.create_all(checkfirst=checkfirst)
         log.info('Created tables for %s' % self.dbname)
 
     def set_db_version(self):
         ver = DbMigrateVersion()
         ver.version = __dbversion__
         ver.repository_id = 'rhodecode_db_migrations'
         ver.repository_path = 'versions'
         self.sa.add(ver)
         log.info('db version set to: %s' % __dbversion__)
 
     def upgrade(self):
         """
         Upgrades given database schema to given revision following
         all needed steps, to perform the upgrade
 
         """
 
         from rhodecode.lib.dbmigrate.migrate.versioning import api
         from rhodecode.lib.dbmigrate.migrate.exceptions import \
             DatabaseNotControlledError
 
         if 'sqlite' in self.dburi:
             print (
                '********************** WARNING **********************\n'
                'Make sure your version of sqlite is at least 3.7.X.  \n'
                'Earlier versions are known to fail on some migrations\n'
                '*****************************************************\n'
             )
         upgrade = ask_ok('You are about to perform database upgrade, make '
                          'sure You backed up your database before. '
                          'Continue ? [y/n]')
         if not upgrade:
             sys.exit('No upgrade performed')
 
         repository_path = jn(dn(dn(dn(os.path.realpath(__file__)))),
                              'rhodecode/lib/dbmigrate')
         db_uri = self.dburi
 
         try:
             curr_version = api.db_version(db_uri, repository_path)
             msg = ('Found current database under version'
                  ' control with version %s' % curr_version)
 
         except (RuntimeError, DatabaseNotControlledError):
             curr_version = 1
             msg = ('Current database is not under version control. Setting'
                    ' as version %s' % curr_version)
             api.version_control(db_uri, repository_path, curr_version)
 
         notify(msg)
 
         if curr_version == __dbversion__:
             sys.exit('This database is already at the newest version')
 
+        # clear cache keys
+        log.info("Clearing cache keys now...")
+        CacheInvalidation.clear_cache()
+
         #======================================================================
         # UPGRADE STEPS
         #======================================================================
 
         class UpgradeSteps(object):
             """
             Those steps follow schema versions so for example schema
             for example schema with seq 002 == step_2 and so on.
             """
 
             def __init__(self, klass):
                 self.klass = klass
 
             def step_0(self):
                 # step 0 is the schema upgrade, and than follow proper upgrades
                 notify('attempting to do database upgrade from '
                        'version %s to version %s' %(curr_version, __dbversion__))
                 api.upgrade(db_uri, repository_path, __dbversion__)
                 notify('Schema upgrade completed')
 
             def step_1(self):
                 pass
 
             def step_2(self):
                 notify('Patching repo paths for newer version of RhodeCode')
                 self.klass.fix_repo_paths()
 
                 notify('Patching default user of RhodeCode')
                 self.klass.fix_default_user()
 
                 log.info('Changing ui settings')
                 self.klass.create_ui_settings()
 
             def step_3(self):
                 notify('Adding additional settings into RhodeCode db')
                 self.klass.fix_settings()
                 notify('Adding ldap defaults')
                 self.klass.create_ldap_options(skip_existing=True)
 
             def step_4(self):
                 notify('create permissions and fix groups')
                 self.klass.create_permissions()
                 self.klass.fixup_groups()
 
             def step_5(self):
                 pass
 
             def step_6(self):
 
                 notify('re-checking permissions')
                 self.klass.create_permissions()
 
                 notify('installing new UI options')
                 sett4 = RhodeCodeSetting('show_public_icon', True)
                 Session().add(sett4)
                 sett5 = RhodeCodeSetting('show_private_icon', True)
                 Session().add(sett5)
                 sett6 = RhodeCodeSetting('stylify_metatags', False)
                 Session().add(sett6)
 
                 notify('fixing old PULL hook')
                 _pull = RhodeCodeUi.get_by_key('preoutgoing.pull_logger')
                 if _pull:
                     _pull.ui_key = RhodeCodeUi.HOOK_PULL
                     Session().add(_pull)
 
                 notify('fixing old PUSH hook')
                 _push = RhodeCodeUi.get_by_key('pretxnchangegroup.push_logger')
                 if _push:
                     _push.ui_key = RhodeCodeUi.HOOK_PUSH
                     Session().add(_push)
 
                 notify('installing new pre-push hook')
                 hooks4 = RhodeCodeUi()
                 hooks4.ui_section = 'hooks'
                 hooks4.ui_key = RhodeCodeUi.HOOK_PRE_PUSH
                 hooks4.ui_value = 'python:rhodecode.lib.hooks.pre_push'
                 Session().add(hooks4)
 
                 notify('installing new pre-pull hook')
                 hooks6 = RhodeCodeUi()
                 hooks6.ui_section = 'hooks'
                 hooks6.ui_key = RhodeCodeUi.HOOK_PRE_PULL
                 hooks6.ui_value = 'python:rhodecode.lib.hooks.pre_pull'
                 Session().add(hooks6)
 
                 notify('installing hgsubversion option')
                 # enable hgsubversion disabled by default
                 hgsubversion = RhodeCodeUi()
                 hgsubversion.ui_section = 'extensions'
                 hgsubversion.ui_key = 'hgsubversion'
                 hgsubversion.ui_value = ''
                 hgsubversion.ui_active = False
                 Session().add(hgsubversion)
 
                 notify('installing hg git option')
                 # enable hggit disabled by default
                 hggit = RhodeCodeUi()
                 hggit.ui_section = 'extensions'
                 hggit.ui_key = 'hggit'
                 hggit.ui_value = ''
                 hggit.ui_active = False
                 Session().add(hggit)
 
                 notify('re-check default permissions')
                 default_user = User.get_by_username(User.DEFAULT_USER)
                 perm = Permission.get_by_key('hg.fork.repository')
                 reg_perm = UserToPerm()
                 reg_perm.user = default_user
                 reg_perm.permission = perm
                 Session().add(reg_perm)
 
             def step_7(self):
                 perm_fixes = self.klass.reset_permissions(User.DEFAULT_USER)
                 Session().commit()
                 if perm_fixes:
                     notify('There was an inconsistent state of permissions '
                            'detected for default user. Permissions are now '
                            'reset to the default value for default user. '
                            'Please validate and check default permissions '
                            'in admin panel')
 
             def step_8(self):
                 self.klass.populate_default_permissions()
                 self.klass.create_default_options(skip_existing=True)
                 Session().commit()
 
             def step_9(self):
                 perm_fixes = self.klass.reset_permissions(User.DEFAULT_USER)
                 Session().commit()
                 if perm_fixes:
                     notify('There was an inconsistent state of permissions '
                            'detected for default user. Permissions are now '
                            'reset to the default value for default user. '
                            'Please validate and check default permissions '
                            'in admin panel')
 
             def step_10(self):
                 pass
 
             def step_11(self):
                 self.klass.update_repo_info()
 
             def step_12(self):
                 self.klass.create_permissions()
                 self.klass.populate_default_permissions()
 
         upgrade_steps = [0] + range(curr_version + 1, __dbversion__ + 1)
 
         # CALL THE PROPER ORDER OF STEPS TO PERFORM FULL UPGRADE
         _step = None
         for step in upgrade_steps:
             notify('performing upgrade step %s' % step)
             getattr(UpgradeSteps(self), 'step_%s' % step)()
             self.sa.commit()
             _step = step
 
         notify('upgrade to version %s successful' % _step)
 
     def fix_repo_paths(self):
         """
         Fixes a old rhodecode version path into new one without a '*'
         """
 
         paths = self.sa.query(RhodeCodeUi)\
                 .filter(RhodeCodeUi.ui_key == '/')\
                 .scalar()
 
         paths.ui_value = paths.ui_value.replace('*', '')
 
         try:
             self.sa.add(paths)
             self.sa.commit()
         except Exception:
             self.sa.rollback()
             raise
 
     def fix_default_user(self):
         """
         Fixes a old default user with some 'nicer' default values,
         used mostly for anonymous access
         """
         def_user = self.sa.query(User)\
                 .filter(User.username == 'default')\
                 .one()
 
         def_user.name = 'Anonymous'
         def_user.lastname = 'User'
         def_user.email = '[e-mail]'
 
         try:
             self.sa.add(def_user)
             self.sa.commit()
         except Exception:
             self.sa.rollback()
             raise
 
     def fix_settings(self):
         """
         Fixes rhodecode settings adds ga_code key for google analytics
         """
 
         hgsettings3 = RhodeCodeSetting('ga_code', '')
 
         try:
             self.sa.add(hgsettings3)
             self.sa.commit()
         except Exception:
             self.sa.rollback()
             raise
 
     def admin_prompt(self, second=False):
         if not self.tests:
             import getpass
 
             # defaults
             defaults = self.cli_args
             username = defaults.get('username')
             password = defaults.get('password')
             email = defaults.get('email')
 
             def get_password():
                 password = getpass.getpass('Specify admin password '
                                            '(min 6 chars):')
                 confirm = getpass.getpass('Confirm password:')
 
                 if password != confirm:
                     log.error('passwords mismatch')
                     return False
                 if len(password) < 6:
                     log.error('password is to short use at least 6 characters')
                     return False
 
                 return password
             if username is None:
                 username = raw_input('Specify admin username:')
             if password is None:
                 password = get_password()
                 if not password:
                     #second try
                     password = get_password()
                     if not password:
                         sys.exit()
             if email is None:
                 email = raw_input('Specify admin email:')
             self.create_user(username, password, email, True)
         else:
             log.info('creating admin and regular test users')
             from rhodecode.tests import TEST_USER_ADMIN_LOGIN, \
             TEST_USER_ADMIN_PASS, TEST_USER_ADMIN_EMAIL, \
             TEST_USER_REGULAR_LOGIN, TEST_USER_REGULAR_PASS, \
             TEST_USER_REGULAR_EMAIL, TEST_USER_REGULAR2_LOGIN, \
             TEST_USER_REGULAR2_PASS, TEST_USER_REGULAR2_EMAIL
 
             self.create_user(TEST_USER_ADMIN_LOGIN, TEST_USER_ADMIN_PASS,
                              TEST_USER_ADMIN_EMAIL, True)
 
             self.create_user(TEST_USER_REGULAR_LOGIN, TEST_USER_REGULAR_PASS,
                              TEST_USER_REGULAR_EMAIL, False)
 
             self.create_user(TEST_USER_REGULAR2_LOGIN, TEST_USER_REGULAR2_PASS,
                              TEST_USER_REGULAR2_EMAIL, False)
 
     def create_ui_settings(self):
         """
         Creates ui settings, fills out hooks
         and disables dotencode
         """
 
         #HOOKS
         hooks1_key = RhodeCodeUi.HOOK_UPDATE
         hooks1_ = self.sa.query(RhodeCodeUi)\
             .filter(RhodeCodeUi.ui_key == hooks1_key).scalar()
 
         hooks1 = RhodeCodeUi() if hooks1_ is None else hooks1_
         hooks1.ui_section = 'hooks'
         hooks1.ui_key = hooks1_key
         hooks1.ui_value = 'hg update >&2'
         hooks1.ui_active = False
         self.sa.add(hooks1)
 
         hooks2_key = RhodeCodeUi.HOOK_REPO_SIZE
         hooks2_ = self.sa.query(RhodeCodeUi)\
             .filter(RhodeCodeUi.ui_key == hooks2_key).scalar()
         hooks2 = RhodeCodeUi() if hooks2_ is None else hooks2_
         hooks2.ui_section = 'hooks'
         hooks2.ui_key = hooks2_key
         hooks2.ui_value = 'python:rhodecode.lib.hooks.repo_size'
         self.sa.add(hooks2)
 
         hooks3 = RhodeCodeUi()
         hooks3.ui_section = 'hooks'
         hooks3.ui_key = RhodeCodeUi.HOOK_PUSH
         hooks3.ui_value = 'python:rhodecode.lib.hooks.log_push_action'
         self.sa.add(hooks3)
 
         hooks4 = RhodeCodeUi()
         hooks4.ui_section = 'hooks'
         hooks4.ui_key = RhodeCodeUi.HOOK_PRE_PUSH
         hooks4.ui_value = 'python:rhodecode.lib.hooks.pre_push'
         self.sa.add(hooks4)
 
         hooks5 = RhodeCodeUi()
         hooks5.ui_section = 'hooks'
         hooks5.ui_key = RhodeCodeUi.HOOK_PULL
         hooks5.ui_value = 'python:rhodecode.lib.hooks.log_pull_action'
         self.sa.add(hooks5)
 
         hooks6 = RhodeCodeUi()
         hooks6.ui_section = 'hooks'
         hooks6.ui_key = RhodeCodeUi.HOOK_PRE_PULL
         hooks6.ui_value = 'python:rhodecode.lib.hooks.pre_pull'
         self.sa.add(hooks6)
 
         # enable largefiles
         largefiles = RhodeCodeUi()
         largefiles.ui_section = 'extensions'
         largefiles.ui_key = 'largefiles'
         largefiles.ui_value = ''
         self.sa.add(largefiles)
 
         # enable hgsubversion disabled by default
         hgsubversion = RhodeCodeUi()
         hgsubversion.ui_section = 'extensions'
         hgsubversion.ui_key = 'hgsubversion'
         hgsubversion.ui_value = ''
         hgsubversion.ui_active = False
         self.sa.add(hgsubversion)
 
         # enable hggit disabled by default
         hggit = RhodeCodeUi()
         hggit.ui_section = 'extensions'
         hggit.ui_key = 'hggit'
         hggit.ui_value = ''
         hggit.ui_active = False
         self.sa.add(hggit)
 
     def create_ldap_options(self, skip_existing=False):
         """Creates ldap settings"""
 
         for k, v in [('ldap_active', 'false'), ('ldap_host', ''),
                     ('ldap_port', '389'), ('ldap_tls_kind', 'PLAIN'),
                     ('ldap_tls_reqcert', ''), ('ldap_dn_user', ''),
                     ('ldap_dn_pass', ''), ('ldap_base_dn', ''),
                     ('ldap_filter', ''), ('ldap_search_scope', ''),
                     ('ldap_attr_login', ''), ('ldap_attr_firstname', ''),
                     ('ldap_attr_lastname', ''), ('ldap_attr_email', '')]:
 
             if skip_existing and RhodeCodeSetting.get_by_name(k) != None:
                 log.debug('Skipping option %s' % k)
                 continue
             setting = RhodeCodeSetting(k, v)
             self.sa.add(setting)
 
     def create_default_options(self, skip_existing=False):
         """Creates default settings"""
 
         for k, v in [
             ('default_repo_enable_locking',  False),
             ('default_repo_enable_downloads', False),
             ('default_repo_enable_statistics', False),
             ('default_repo_private', False),
             ('default_repo_type', 'hg')]:
 
             if skip_existing and RhodeCodeSetting.get_by_name(k) != None:
                 log.debug('Skipping option %s' % k)
                 continue
             setting = RhodeCodeSetting(k, v)
             self.sa.add(setting)
 
     def fixup_groups(self):
         def_usr = User.get_default_user()
         for g in RepoGroup.query().all():
             g.group_name = g.get_new_name(g.name)
             self.sa.add(g)
             # get default perm
             default = UserRepoGroupToPerm.query()\
                 .filter(UserRepoGroupToPerm.group == g)\
                 .filter(UserRepoGroupToPerm.user == def_usr)\
                 .scalar()
 
             if default is None:
                 log.debug('missing default permission for group %s adding' % g)
                 perm_obj = ReposGroupModel()._create_default_perms(g)
                 self.sa.add(perm_obj)
 
     def reset_permissions(self, username):
         """
         Resets permissions to default state, usefull when old systems had
         bad permissions, we must clean them up
 
         :param username:
         :type username:
         """
         default_user = User.get_by_username(username)
         if not default_user:
             return
 
         u2p = UserToPerm.query()\
             .filter(UserToPerm.user == default_user).all()
         fixed = False
         if len(u2p) != len(Permission.DEFAULT_USER_PERMISSIONS):
             for p in u2p:
                 Session().delete(p)
             fixed = True
             self.populate_default_permissions()
         return fixed
 
     def update_repo_info(self):
         RepoModel.update_repoinfo()
 
     def config_prompt(self, test_repo_path='', retries=3):
         defaults = self.cli_args
         _path = defaults.get('repos_location')
         if retries == 3:
             log.info('Setting up repositories config')
 
         if _path is not None:
             path = _path
         elif not self.tests and not test_repo_path:
             path = raw_input(
                  'Enter a valid absolute path to store repositories. '
                  'All repositories in that path will be added automatically:'
             )
         else:
             path = test_repo_path
         path_ok = True
 
         # check proper dir
         if not os.path.isdir(path):
             path_ok = False
             log.error('Given path %s is not a valid directory' % path)
 
         elif not os.path.isabs(path):
             path_ok = False
             log.error('Given path %s is not an absolute path' % path)
 
         # check write access
         elif not os.access(path, os.W_OK) and path_ok:
             path_ok = False
             log.error('No write permission to given path %s' % path)
 
         if retries == 0:
             sys.exit('max retries reached')
         if not path_ok:
             retries -= 1
             return self.config_prompt(test_repo_path, retries)
 
         real_path = os.path.normpath(os.path.realpath(path))
 
         if real_path != os.path.normpath(path):
             if not ask_ok(('Path looks like a symlink, Rhodecode will store '
                            'given path as %s ? [y/n]') % (real_path)):
                 log.error('Canceled by user')
                 sys.exit(-1)
 
         return real_path
 
     def create_settings(self, path):
 
         self.create_ui_settings()
 
         #HG UI OPTIONS
         web1 = RhodeCodeUi()
         web1.ui_section = 'web'
         web1.ui_key = 'push_ssl'
         web1.ui_value = 'false'
 
         web2 = RhodeCodeUi()
         web2.ui_section = 'web'
         web2.ui_key = 'allow_archive'
         web2.ui_value = 'gz zip bz2'
 
         web3 = RhodeCodeUi()
         web3.ui_section = 'web'
         web3.ui_key = 'allow_push'
         web3.ui_value = '*'
 
         web4 = RhodeCodeUi()
         web4.ui_section = 'web'
         web4.ui_key = 'baseurl'
         web4.ui_value = '/'
 
         paths = RhodeCodeUi()
         paths.ui_section = 'paths'
         paths.ui_key = '/'
         paths.ui_value = path
 
         phases = RhodeCodeUi()
         phases.ui_section = 'phases'
         phases.ui_key = 'publish'
         phases.ui_value = False
 
         sett1 = RhodeCodeSetting('realm', 'RhodeCode authentication')
         sett2 = RhodeCodeSetting('title', 'RhodeCode')
         sett3 = RhodeCodeSetting('ga_code', '')
 
         sett4 = RhodeCodeSetting('show_public_icon', True)
         sett5 = RhodeCodeSetting('show_private_icon', True)
         sett6 = RhodeCodeSetting('stylify_metatags', False)
 
         self.sa.add(web1)
         self.sa.add(web2)
         self.sa.add(web3)
         self.sa.add(web4)
         self.sa.add(paths)
         self.sa.add(sett1)
         self.sa.add(sett2)
         self.sa.add(sett3)
         self.sa.add(sett4)
         self.sa.add(sett5)
         self.sa.add(sett6)
 
         self.create_ldap_options()
         self.create_default_options()
 
         log.info('created ui config')
 
     def create_user(self, username, password, email='', admin=False):
         log.info('creating user %s' % username)
         UserModel().create_or_update(username, password, email,
                                      firstname='RhodeCode', lastname='Admin',
                                      active=True, admin=admin)
 
     def create_default_user(self):
         log.info('creating default user')
         # create default user for handling default permissions.
         UserModel().create_or_update(username='default',
                               password=str(uuid.uuid1())[:8],
                               email='[e-mail]',
                               firstname='Anonymous', lastname='User')
 
     def create_permissions(self):
         """
         Creates all permissions defined in the system
         """
         # module.(access|create|change|delete)_[name]
         # module.(none|read|write|admin)
         log.info('creating permissions')
         PermissionModel(self.sa).create_permissions()
 
     def populate_default_permissions(self):
         """
         Populate default permissions. It will create only the default
         permissions that are missing, and not alter already defined ones
         """
         log.info('creating default user permissions')
         PermissionModel(self.sa).create_default_permissions(user=User.DEFAULT_USER)
 
     @staticmethod
     def check_waitress():
         """
         Function executed at the end of setup
         """
         if not __py_version__ >= (2, 6):
             notify('Python2.5 detected, please switch '
                    'egg:waitress#main -> egg:Paste#http '
                    'in your .ini file')

rhodecode/model/db.py

@@ -1,2170 +1,2179 b''
 # -*- coding: utf-8 -*-
 """
     rhodecode.model.db
     ~~~~~~~~~~~~~~~~~~
 
     Database Models for RhodeCode
 
     :created_on: Apr 08, 2010
     :author: marcink
     :copyright: (C) 2010-2012 Marcin Kuzminski <[e-mail]>
     :license: GPLv3, see COPYING for more details.
 """
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation, either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
 import logging
 import datetime
 import traceback
 import hashlib
 import time
 from collections import defaultdict
 
 from sqlalchemy import *
 from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import relationship, joinedload, class_mapper, validates
 from sqlalchemy.exc import DatabaseError
 from beaker.cache import cache_region, region_invalidate
 from webob.exc import HTTPNotFound
 
 from pylons.i18n.translation import lazy_ugettext as _
 
 from rhodecode.lib.vcs import get_backend
 from rhodecode.lib.vcs.utils.helpers import get_scm
 from rhodecode.lib.vcs.exceptions import VCSError
 from rhodecode.lib.vcs.utils.lazy import LazyProperty
 from rhodecode.lib.vcs.backends.base import EmptyChangeset
 
 from rhodecode.lib.utils2 import str2bool, safe_str, get_changeset_safe, \
     safe_unicode, remove_suffix, remove_prefix, time_to_datetime, _set_extras
 from rhodecode.lib.compat import json
 from rhodecode.lib.caching_query import FromCache
 
 from rhodecode.model.meta import Base, Session
 
 URL_SEP = '/'
 log = logging.getLogger(__name__)
 
 #==============================================================================
 # BASE CLASSES
 #==============================================================================
 
 _hash_key = lambda k: hashlib.md5(safe_str(k)).hexdigest()
 
 
 class BaseModel(object):
     """
     Base Model for all classess
     """
 
     @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 tupples 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)
 
     def __repr__(self):
         if hasattr(self, '__unicode__'):
             # python repr needs to return str
             return safe_str(self.__unicode__())
         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'}
     )
     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, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     _app_settings_value = Column("app_settings_value", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
     def __init__(self, k='', v=''):
         self.app_settings_name = k
         self.app_settings_value = v
 
     @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
         if self.app_settings_name in ["ldap_active",
                                       "default_repo_enable_statistics",
                                       "default_repo_enable_locking",
                                       "default_repo_private",
                                       "default_repo_enable_downloads"]:
             v = str2bool(v)
         return 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)
 
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (
             self.__class__.__name__,
             self.app_settings_name, self.app_settings_value
         )
 
     @classmethod
     def get_by_name(cls, key):
         return cls.query()\
             .filter(cls.app_settings_name == key).scalar()
 
     @classmethod
     def get_by_name_or_create(cls, key):
         res = cls.get_by_name(key)
         if not res:
             res = cls(key)
         return res
 
     @classmethod
     def get_app_settings(cls, cache=False):
 
         ret = cls.query()
 
         if cache:
             ret = ret.options(FromCache("sql_cache_short", "get_hg_settings"))
 
         if not ret:
             raise Exception('Could not get application settings !')
         settings = {}
         for each in ret:
             settings['rhodecode_' + each.app_settings_name] = \
                 each.app_settings_value
 
         return settings
 
     @classmethod
     def get_ldap_settings(cls, cache=False):
         ret = cls.query()\
                 .filter(cls.app_settings_name.startswith('ldap_')).all()
         fd = {}
         for row in ret:
             fd.update({row.app_settings_name: row.app_settings_value})
 
         return fd
 
     @classmethod
     def get_default_repo_settings(cls, cache=False, strip_prefix=False):
         ret = cls.query()\
                 .filter(cls.app_settings_name.startswith('default_')).all()
         fd = {}
         for row in ret:
             key = row.app_settings_name
             if strip_prefix:
                 key = remove_prefix(key, prefix='default_')
             fd.update({key: row.app_settings_value})
 
         return fd
 
 
 class RhodeCodeUi(Base, BaseModel):
     __tablename__ = 'rhodecode_ui'
     __table_args__ = (
         UniqueConstraint('ui_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'}
     )
 
     HOOK_UPDATE = 'changegroup.update'
     HOOK_REPO_SIZE = 'changegroup.repo_size'
     HOOK_PUSH = 'changegroup.push_logger'
     HOOK_PRE_PUSH = 'prechangegroup.pre_push'
     HOOK_PULL = 'outgoing.pull_logger'
     HOOK_PRE_PULL = 'preoutgoing.pre_pull'
 
     ui_id = Column("ui_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     ui_section = Column("ui_section", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     ui_key = Column("ui_key", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     ui_value = Column("ui_value", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     ui_active = Column("ui_active", Boolean(), nullable=True, unique=None, default=True)
 
     @classmethod
     def get_by_key(cls, key):
         return cls.query().filter(cls.ui_key == key).scalar()
 
     @classmethod
     def get_builtin_hooks(cls):
         q = cls.query()
         q = q.filter(cls.ui_key.in_([cls.HOOK_UPDATE, cls.HOOK_REPO_SIZE,
                                      cls.HOOK_PUSH, cls.HOOK_PRE_PUSH,
                                      cls.HOOK_PULL, cls.HOOK_PRE_PULL]))
         return q.all()
 
     @classmethod
     def get_custom_hooks(cls):
         q = cls.query()
         q = q.filter(~cls.ui_key.in_([cls.HOOK_UPDATE, cls.HOOK_REPO_SIZE,
                                       cls.HOOK_PUSH, cls.HOOK_PRE_PUSH,
                                       cls.HOOK_PULL, cls.HOOK_PRE_PULL]))
         q = q.filter(cls.ui_section == 'hooks')
         return q.all()
 
     @classmethod
     def get_repos_location(cls):
         return cls.get_by_key('/').ui_value
 
     @classmethod
     def create_or_update_hook(cls, key, val):
         new_ui = cls.get_by_key(key) or cls()
         new_ui.ui_section = 'hooks'
         new_ui.ui_active = True
         new_ui.ui_key = key
         new_ui.ui_value = val
 
         Session().add(new_ui)
 
     def __repr__(self):
         return '<DB:%s[%s:%s]>' % (self.__class__.__name__, 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'}
     )
     DEFAULT_USER = 'default'
 
     user_id = Column("user_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     username = Column("username", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     password = Column("password", String(255, convert_unicode=False, assert_unicode=None), 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, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     lastname = Column("lastname", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     _email = Column("email", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     last_login = Column("last_login", DateTime(timezone=False), nullable=True, unique=None, default=None)
     ldap_dn = Column("ldap_dn", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     api_key = Column("api_key", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     inherit_default_permissions = Column("inherit_default_permissions", Boolean(), nullable=False, unique=None, default=True)
 
     user_log = relationship('UserLog')
     user_perms = relationship('UserToPerm', primaryjoin="User.user_id==UserToPerm.user_id", cascade='all')
 
     repositories = relationship('Repository')
     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')
 
     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')
     #extra emails for this user
     user_emails = relationship('UserEmailMap', cascade='all')
 
     @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 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 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)
 
     def __unicode__(self):
         return u"<%s('id:%s:%s')>" % (self.__class__.__name__,
                                      self.user_id, self.username)
 
     @classmethod
     def get_by_username(cls, username, case_insensitive=False, cache=False):
         if case_insensitive:
             q = cls.query().filter(cls.username.ilike(username))
         else:
             q = cls.query().filter(cls.username == username)
 
         if cache:
             q = q.options(FromCache(
                             "sql_cache_short",
                             "get_user_%s" % _hash_key(username)
                           )
             )
         return q.scalar()
 
     @classmethod
     def get_by_api_key(cls, api_key, cache=False):
         q = cls.query().filter(cls.api_key == api_key)
 
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_api_key_%s" % api_key))
         return q.scalar()
 
     @classmethod
     def get_by_email(cls, email, case_insensitive=False, cache=False):
         if case_insensitive:
             q = cls.query().filter(cls.email.ilike(email))
         else:
             q = cls.query().filter(cls.email == email)
 
         if cache:
             q = q.options(FromCache("sql_cache_short",
                                     "get_email_key_%s" % email))
 
         ret = q.scalar()
         if ret is None:
             q = UserEmailMap.query()
             # try fetching in alternate email map
             if case_insensitive:
                 q = q.filter(UserEmailMap.email.ilike(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_lastlogin(self):
         """Update user lastlogin"""
         self.last_login = datetime.datetime.now()
         Session().add(self)
         log.debug('updated user %s lastlogin' % self.username)
 
     @classmethod
     def get_first_admin(cls):
         user = User.query().filter(User.admin == True).first()
         if user is None:
             raise Exception('Missing administrative account!')
         return user
 
     @classmethod
     def get_default_user(cls, cache=False):
         user = User.get_by_username(User.DEFAULT_USER, cache=cache)
         if user is None:
             raise Exception('Missing default account!')
         return user
 
     def get_api_data(self):
         """
         Common function for generating user related data for API
         """
         user = self
         data = dict(
             user_id=user.user_id,
             username=user.username,
             firstname=user.name,
             lastname=user.lastname,
             email=user.email,
             emails=user.emails,
             api_key=user.api_key,
             active=user.active,
             admin=user.admin,
             ldap_dn=user.ldap_dn,
             last_login=user.last_login,
             ip_addresses=user.ip_addresses
         )
         return data
 
     def __json__(self):
         data = dict(
             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 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'}
     )
     __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, convert_unicode=False, assert_unicode=None), 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'}
     )
     __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, convert_unicode=False, assert_unicode=None), nullable=True, unique=False, default=None)
     active = Column("active", Boolean(), nullable=True, unique=None, default=True)
     user = relationship('User', lazy='joined')
 
     @classmethod
     def _get_ip_range(cls, ip_addr):
         from rhodecode.lib import ipaddr
         net = ipaddr.IPNetwork(address=ip_addr)
         return [str(net.network), str(net.broadcast)]
 
     def __json__(self):
         return dict(
           ip_addr=self.ip_addr,
           ip_range=self._get_ip_range(self.ip_addr)
         )
 
 
 class UserLog(Base, BaseModel):
     __tablename__ = 'user_logs'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
     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, convert_unicode=False, assert_unicode=None), 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, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     user_ip = Column("user_ip", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     action = Column("action", UnicodeText(1200000, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     action_date = Column("action_date", DateTime(timezone=False), nullable=True, unique=None, default=None)
 
     @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'},
     )
 
     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, convert_unicode=False, assert_unicode=None), nullable=False, unique=True, 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)
 
     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 = relationship('User')
 
     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(cls.users_group_name.ilike(group_name))
         else:
             q = cls.query().filter(cls.users_group_name == group_name)
         if cache:
             q = q.options(FromCache(
                             "sql_cache_short",
                             "get_user_%s" % _hash_key(group_name)
                           )
             )
         return q.scalar()
 
     @classmethod
     def get(cls, users_group_id, cache=False):
         users_group = cls.query()
         if cache:
             users_group = users_group.options(FromCache("sql_cache_short",
                                     "get_users_group_%s" % users_group_id))
         return users_group.get(users_group_id)
 
     def get_api_data(self):
         users_group = self
 
         data = dict(
             users_group_id=users_group.users_group_id,
             group_name=users_group.users_group_name,
             active=users_group.users_group_active,
         )
 
         return data
 
 
 class UserGroupMember(Base, BaseModel):
     __tablename__ = 'users_groups_members'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
 
     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'},
     )
     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, convert_unicode=False, assert_unicode=None))
     field_label = Column("field_label", String(1024, convert_unicode=False, assert_unicode=None), nullable=False)
     field_value = Column("field_value", String(10000, convert_unicode=False, assert_unicode=None), nullable=False)
     field_desc = Column("field_desc", String(1024, convert_unicode=False, assert_unicode=None), nullable=False)
     field_type = Column("field_type", String(256), 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__ = (
         UniqueConstraint('repo_name'),
         Index('r_repo_name_idx', 'repo_name'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
 
     repo_id = Column("repo_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     repo_name = Column("repo_name", String(255, convert_unicode=False, assert_unicode=None), nullable=False, unique=True, default=None)
     clone_uri = Column("clone_uri", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=False, default=None)
     repo_type = Column("repo_type", String(255, convert_unicode=False, assert_unicode=None), 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, convert_unicode=False, assert_unicode=None), 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_rev = Column("landing_revision", String(255, convert_unicode=False, assert_unicode=None), nullable=False, unique=False, default=None)
     enable_locking = Column("enable_locking", Boolean(), nullable=False, unique=None, default=False)
     _locked = Column("locked", String(255, convert_unicode=False, assert_unicode=None), 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')
     fork = relationship('Repository', remote_side=repo_id)
     group = relationship('RepoGroup')
     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_org = relationship('PullRequest',
                     primaryjoin='PullRequest.org_repo_id==Repository.repo_id',
                     cascade="all, delete, delete-orphan")
 
     pull_requests_other = relationship('PullRequest',
                     primaryjoin='PullRequest.other_repo_id==Repository.repo_id',
                     cascade="all, delete, delete-orphan")
 
     def __unicode__(self):
         return u"<%s('%s:%s')>" % (self.__class__.__name__, self.repo_id,
                                    self.repo_name)
 
     @hybrid_property
     def locked(self):
         # always should return [user_id, timelocked]
         if self._locked:
             _lock_info = self._locked.split(':')
             return int(_lock_info[0]), _lock_info[1]
         return [None, None]
 
     @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 EmptyChangeset
         dummy = EmptyChangeset().__json__()
         if not self._changeset_cache:
             return dummy
         try:
             return json.loads(self._changeset_cache)
         except TypeError:
             return dummy
 
     @changeset_cache.setter
     def changeset_cache(self, val):
         try:
             self._changeset_cache = json.dumps(val)
         except Exception:
             log.error(traceback.format_exc())
 
     @classmethod
     def url_sep(cls):
         return URL_SEP
 
     @classmethod
     def normalize_repo_name(cls, repo_name):
         """
         Normalizes os specific repo_name to the format internally stored inside
         dabatabase using URL_SEP
 
         :param cls:
         :param repo_name:
         """
         return cls.url_sep().join(repo_name.split(os.sep))
 
     @classmethod
     def get_by_repo_name(cls, repo_name):
         q = Session().query(cls).filter(cls.repo_name == repo_name)
         q = q.options(joinedload(Repository.fork))\
                 .options(joinedload(Repository.user))\
                 .options(joinedload(Repository.group))
         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.url_sep())
         q = q.options(FromCache("sql_cache_short", "repository_repo_path"))
         return q.one().ui_value
 
     @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(Repository.url_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.just_name, self.repo_name
 
     @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 ==
                                               Repository.url_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(Repository.url_sep())
         return os.path.join(*map(safe_unicode, p))
 
     @property
     def cache_keys(self):
         """
         Returns associated cache keys for that repo
         """
         return CacheInvalidation.query()\
             .filter(CacheInvalidation.cache_args == self.repo_name)\
             .order_by(CacheInvalidation.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 Repository.url_sep().join(path_prefix + [repo_name])
 
     @property
     def _ui(self):
         """
         Creates an db based ui object for this repository
         """
         from rhodecode.lib.utils import make_ui
         return make_ui('db', clear_session=False)
 
     @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())
 
     def get_api_data(self):
         """
         Common function for generating repo api data
 
         """
         repo = self
         data = dict(
             repo_id=repo.repo_id,
             repo_name=repo.repo_name,
             repo_type=repo.repo_type,
             clone_uri=repo.clone_uri,
             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(self.locked[0]).get_api_data() \
                 if self.locked[0] else None,
             locked_date=time_to_datetime(self.locked[1]) \
                 if self.locked[1] else None
         )
         rc_config = RhodeCodeSetting.get_app_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):
         repo.locked = [user_id, time.time()]
         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
 
     @property
     def last_db_change(self):
         return self.updated_on
 
     def clone_url(self, **override):
         from pylons import url
         from urlparse import urlparse
         import urllib
         parsed_url = urlparse(url('home', qualified=True))
         default_clone_uri = '%(scheme)s://%(user)s%(pass)s%(netloc)s%(prefix)s%(path)s'
         decoded_path = safe_unicode(urllib.unquote(parsed_url.path))
         args = {
            'user': '',
            'pass': '',
            'scheme': parsed_url.scheme,
            'netloc': parsed_url.netloc,
            'prefix': decoded_path,
            'path': self.repo_name
         }
 
         args.update(override)
         return default_clone_uri % args
 
     #==========================================================================
     # SCM PROPERTIES
     #==========================================================================
 
     def get_changeset(self, rev=None):
         return get_changeset_safe(self.scm_instance, rev)
 
     def get_landing_changeset(self):
         """
         Returns landing changeset, or if that doesn't exist returns the tip
         """
         cs = self.get_changeset(self.landing_rev) or self.get_changeset()
         return cs
 
     def update_changeset_cache(self, cs_cache=None):
         """
         Update cache of last changeset for repository, keys should be::
 
             short_id
             raw_id
             revision
             message
             date
             author
 
         :param cs_cache:
         """
         from rhodecode.lib.vcs.backends.base import BaseChangeset
         if cs_cache is None:
             cs_cache = EmptyChangeset()
             # use no-cache version here
             scm_repo = self.scm_instance_no_cache()
             if scm_repo:
                 cs_cache = scm_repo.get_changeset()
 
         if isinstance(cs_cache, BaseChangeset):
             cs_cache = cs_cache.__json__()
 
         if (cs_cache != self.changeset_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 repo:%s already with latest changes'
                       % self.repo_name)
 
     @property
     def tip(self):
         return self.get_changeset('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 = 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
         :type revisions: list
         """
 
         statuses = ChangesetStatus.query()\
             .filter(ChangesetStatus.repo == self)\
             .filter(ChangesetStatus.version == 0)
         if revisions:
             statuses = statuses.filter(ChangesetStatus.revision.in_(revisions))
         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.org_repo == self).all():
             for rev in pr.revisions:
                 pr_id = pr.pull_request_id
                 pr_repo = pr.other_repo.repo_name
                 grouped[rev] = [stat, status_lbl, pr_id, pr_repo]
 
         for stat in statuses.all():
             pr_id = pr_repo = None
             if stat.pull_request:
                 pr_id = stat.pull_request.pull_request_id
                 pr_repo = stat.pull_request.other_repo.repo_name
             grouped[stat.revision] = [str(stat.status), stat.status_lbl,
                                       pr_id, pr_repo]
         return grouped
 
     def _repo_size(self):
         from rhodecode.lib import helpers as h
         log.debug('calculating repository size...')
         return h.format_byte_size(self.scm_instance.size)
 
     #==========================================================================
     # SCM CACHE INSTANCE
     #==========================================================================
 
     @property
     def invalidate(self):
         return CacheInvalidation.invalidate(self.repo_name)
 
     def set_invalidate(self):
         """
         Mark caches of this repo as invalid.
         """
         CacheInvalidation.set_invalidate(self.repo_name)
 
     def scm_instance_no_cache(self):
         return self.__get_instance()
 
     @property
     def scm_instance(self):
         import rhodecode
         full_cache = str2bool(rhodecode.CONFIG.get('vcs_full_cache'))
         if full_cache:
             return self.scm_instance_cached()
         return self.__get_instance()
 
     def scm_instance_cached(self, cache_map=None):
         @cache_region('long_term')
         def _c(repo_name):
             return self.__get_instance()
         rn = self.repo_name
 
         if cache_map:
             # get using prefilled cache_map
             invalidate_repo = cache_map[self.repo_name]
             if invalidate_repo:
                 invalidate_repo = (None if invalidate_repo.cache_active
                                    else invalidate_repo)
         else:
             # get from invalidate
             invalidate_repo = self.invalidate
 
         if invalidate_repo is not None:
             region_invalidate(_c, None, rn)
             log.debug('Cache for %s invalidated, getting new object' % (rn))
             # update our cache
             CacheInvalidation.set_valid(invalidate_repo.cache_key)
         else:
             log.debug('Getting obj for %s from cache' % (rn))
         return _c(rn)
 
     def __get_instance(self):
         repo_full_path = self.repo_full_path
         try:
             alias = get_scm(repo_full_path)[0]
             log.debug('Creating instance of %s repository from %s'
                       % (alias, repo_full_path))
             backend = get_backend(alias)
         except VCSError:
             log.error(traceback.format_exc())
             log.error('Perhaps this repository is in db and not in '
                       'filesystem run rescan repositories with '
                       '"destroy old data " option from admin panel')
             return
 
         if alias == 'hg':
 
             repo = backend(safe_str(repo_full_path), create=False,
                            baseui=self._ui)
             # skip hidden web repository
             if repo._get_hidden():
                 return
         else:
             repo = backend(repo_full_path, create=False)
 
         return repo
 
 
 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'},
     )
     __mapper_args__ = {'order_by': 'group_name'}
 
     group_id = Column("group_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     group_name = Column("group_name", String(255, convert_unicode=False, assert_unicode=None), 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, convert_unicode=False, assert_unicode=None), 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)
 
     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')
 
     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 groups_choices(cls, groups=None, show_empty_group=True):
         from webhelpers.html import literal as _literal
         if not groups:
             groups = cls.query().all()
 
         repo_groups = []
         if show_empty_group:
             repo_groups = [('-1', '-- %s --' % _('top level'))]
         sep = ' &raquo; '
         _name = lambda k: _literal(sep.join(k))
 
         repo_groups.extend([(x.group_id, _name(x.full_path_splitted))
                               for x in groups])
 
         repo_groups = sorted(repo_groups, key=lambda t: t[1].split(sep)[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(cls.group_name.ilike(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()
 
     @property
     def parents(self):
         parents_recursion_limit = 5
         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('group nested more than %s' %
                           parents_recursion_limit)
                 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])
 
 
 class Permission(Base, BaseModel):
     __tablename__ = 'permissions'
     __table_args__ = (
         Index('p_perm_name_idx', 'permission_name'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
     PERMS = [
         ('hg.admin', _('RhodeCode 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.fork.none', _('Repository forking disabled')),
         ('hg.fork.repository', _('Repository forking enabled')),
 
         ('hg.register.none', _('Register disabled')),
         ('hg.register.manual_activate', _('Register new user with RhodeCode '
                                           'with manual activation')),
 
         ('hg.register.auto_activate', _('Register new user with RhodeCode '
                                         'with auto activation')),
     ]
 
     #definition of system default permissions for DEFAULT user
     DEFAULT_USER_PERMISSIONS = [
         'repository.read',
         'group.read',
         'usergroup.read',
         'hg.create.repository',
         'hg.fork.repository',
         'hg.register.manual_activate',
     ]
 
     # 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, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     permission_longname = Column("permission_longname", String(255, convert_unicode=False, assert_unicode=None), 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_perms(cls, default_user_id):
         q = Session().query(UserRepoToPerm, Repository, cls)\
          .join((Repository, UserRepoToPerm.repository_id == Repository.repo_id))\
          .join((cls, UserRepoToPerm.permission_id == cls.permission_id))\
          .filter(UserRepoToPerm.user_id == default_user_id)
 
         return q.all()
 
     @classmethod
     def get_default_group_perms(cls, default_user_id):
         q = Session().query(UserRepoGroupToPerm, RepoGroup, cls)\
          .join((RepoGroup, UserRepoGroupToPerm.group_id == RepoGroup.group_id))\
          .join((cls, UserRepoGroupToPerm.permission_id == cls.permission_id))\
          .filter(UserRepoGroupToPerm.user_id == default_user_id)
 
         return q.all()
 
     @classmethod
     def get_default_user_group_perms(cls, default_user_id):
         q = Session().query(UserUserGroupToPerm, UserGroup, cls)\
          .join((UserGroup, UserUserGroupToPerm.user_group_id == UserGroup.users_group_id))\
          .join((cls, UserUserGroupToPerm.permission_id == cls.permission_id))\
          .filter(UserUserGroupToPerm.user_id == default_user_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'}
     )
     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'}
     )
     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'}
     )
     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'}
     )
     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'<userGroup:%s => %s >' % (self.users_group, self.repository)
 
 
 #TODO; not sure if this will be ever used
 class UserGroupUserGroupToPerm(Base, BaseModel):
     __tablename__ = 'user_group_user_group_to_perm'
     __table_args__ = (
         UniqueConstraint('user_group_id', 'user_group_id', 'permission_id'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'}
     )
     user_user_group_to_perm_id = Column("user_user_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     target_user_group_id = Column("target_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)
     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', remote_side=target_user_group_id, primaryjoin='UserGroupUserGroupToPerm.target_user_group_id==UserGroup.users_group_id')
     user_group = relationship('UserGroup', remote_side=user_group_id, 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'<UserGroup:%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'}
     )
     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'}
     )
 
     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')
 
 
 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'}
     )
 
     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')
 
 
 class Statistics(Base, BaseModel):
     __tablename__ = 'statistics'
     __table_args__ = (
          UniqueConstraint('repository_id'),
          {'extend_existing': True, 'mysql_engine': 'InnoDB',
           'mysql_charset': 'utf8'}
     )
     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'}
     )
 
     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 CacheInvalidation(Base, BaseModel):
     __tablename__ = 'cache_invalidation'
     __table_args__ = (
         UniqueConstraint('cache_key'),
         Index('key_idx', 'cache_key'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
     # cache_id, not used
     cache_id = Column("cache_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
     # cache_key as created by _get_cache_key
     cache_key = Column("cache_key", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     # cache_args is a repo_name
     cache_args = Column("cache_args", String(255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
     # instance sets cache_active True when it is caching,
     # other instances set cache_active to False to indicate that this cache is invalid
     cache_active = Column("cache_active", Boolean(), nullable=True, unique=None, default=False)
 
     def __init__(self, cache_key, repo_name=''):
         self.cache_key = cache_key
         self.cache_args = repo_name
         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):
         """
         get prefix 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()[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 clear_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, key):
         """
         Wrapper for generating a unique cache key for this instance and "key".
         key must / will start with a repo_name which will be stored in .cache_args .
         """
         import rhodecode
         prefix = rhodecode.CONFIG.get('instance_id', '')
         return "%s%s" % (prefix, key)
 
     @classmethod
     def invalidate(cls, key):
         """
         Returns Invalidation object if the local cache with the given key is invalid,
         None otherwise.
         """
         repo_name = key
         repo_name = remove_suffix(repo_name, '_README')
         repo_name = remove_suffix(repo_name, '_RSS')
         repo_name = remove_suffix(repo_name, '_ATOM')
 
         cache_key = cls._get_cache_key(key)
         inv_obj = Session().query(cls).filter(cls.cache_key == cache_key).scalar()
         if not inv_obj:
             try:
                 inv_obj = CacheInvalidation(cache_key, repo_name)
                 Session().add(inv_obj)
                 Session().commit()
             except Exception:
                 log.error(traceback.format_exc())
                 Session().rollback()
                 return
 
         if not inv_obj.cache_active:
             # `cache_active = False` means that this cache
             # no longer is valid
             return inv_obj
 
     @classmethod
     def set_invalidate(cls, repo_name):
         """
         Mark all caches of a repo as invalid in the database.
         """
         invalidated_keys = []
         inv_objs = Session().query(cls).filter(cls.cache_args == repo_name).all()
 
         try:
             for inv_obj in inv_objs:
                 log.debug('marking %s key for invalidation based on repo_name=%s'
                           % (inv_obj, safe_str(repo_name)))
                 inv_obj.cache_active = False
                 invalidated_keys.append(inv_obj.cache_key)
                 Session().add(inv_obj)
             Session().commit()
         except Exception:
             log.error(traceback.format_exc())
             Session().rollback()
         return invalidated_keys
 
     @classmethod
     def set_valid(cls, cache_key):
         """
         Mark this cache key as active and currently cached
         """
         inv_obj = cls.query().filter(cls.cache_key == cache_key).scalar()
         inv_obj.cache_active = True
         Session().add(inv_obj)
         Session().commit()
 
     @classmethod
     def get_cache_map(cls):
 
         class cachemapdict(dict):
 
             def __init__(self, *args, **kwargs):
                 self.fixkey = kwargs.pop('fixkey', False)
                 super(cachemapdict, self).__init__(*args, **kwargs)
 
             def __getattr__(self, name):
                 cache_key = name
                 if self.fixkey:
                     cache_key = cls._get_cache_key(name)
                 if cache_key in self.__dict__:
                     return self.__dict__[cache_key]
                 else:
                     return self[cache_key]
 
             def __getitem__(self, name):
                 cache_key = name
                 if self.fixkey:
                     cache_key = cls._get_cache_key(name)
                 try:
                     return super(cachemapdict, self).__getitem__(cache_key)
                 except KeyError:
                     return None
 
         cache_map = cachemapdict(fixkey=True)
         for obj in cls.query().all():
             cache_map[obj.cache_key] = cachemapdict(obj.get_dict())
         return cache_map
 
 
 class ChangesetComment(Base, BaseModel):
     __tablename__ = 'changeset_comments'
     __table_args__ = (
         Index('cc_revision_idx', 'revision'),
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
     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)
     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(25000), 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)
 
     author = relationship('User', lazy='joined')
     repo = relationship('Repository')
     status_change = relationship('ChangesetStatus', cascade="all, delete, delete-orphan")
     pull_request = relationship('PullRequest', lazy='joined')
 
     @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()
 
 
 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'}
     )
     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')>" % (
             self.__class__.__name__,
             self.status, 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 PullRequest(Base, BaseModel):
     __tablename__ = 'pull_requests'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
 
     STATUS_NEW = u'new'
     STATUS_OPEN = u'open'
     STATUS_CLOSED = u'closed'
 
     pull_request_id = Column('pull_request_id', Integer(), nullable=False, primary_key=True)
     title = Column('title', Unicode(256), nullable=True)
     description = Column('description', UnicodeText(10240), nullable=True)
     status = Column('status', Unicode(256), 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)
     user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None)
     _revisions = Column('revisions', UnicodeText(20500))  # 500 revisions max
     org_repo_id = Column('org_repo_id', Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     org_ref = Column('org_ref', Unicode(256), nullable=False)
     other_repo_id = Column('other_repo_id', Integer(), ForeignKey('repositories.repo_id'), nullable=False)
     other_ref = Column('other_ref', Unicode(256), nullable=False)
 
     @hybrid_property
     def revisions(self):
         return self._revisions.split(':')
 
     @revisions.setter
     def revisions(self, val):
         self._revisions = ':'.join(val)
 
     @property
     def org_ref_parts(self):
         return self.org_ref.split(':')
 
     @property
     def other_ref_parts(self):
         return self.other_ref.split(':')
 
     author = relationship('User', lazy='joined')
     reviewers = relationship('PullRequestReviewers',
                              cascade="all, delete, delete-orphan")
     org_repo = relationship('Repository', primaryjoin='PullRequest.org_repo_id==Repository.repo_id')
     other_repo = relationship('Repository', primaryjoin='PullRequest.other_repo_id==Repository.repo_id')
     statuses = relationship('ChangesetStatus')
     comments = relationship('ChangesetComment',
                              cascade="all, delete, delete-orphan")
 
     def is_closed(self):
         return self.status == self.STATUS_CLOSED
 
     @property
     def last_review_status(self):
         return self.statuses[-1].status if self.statuses else ''
 
     def __json__(self):
         return dict(
           revisions=self.revisions
         )
 
 
 class PullRequestReviewers(Base, BaseModel):
     __tablename__ = 'pull_request_reviewers'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
 
     def __init__(self, user=None, pull_request=None):
         self.user = user
         self.pull_request = pull_request
 
     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)
 
     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'},
     )
 
     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(50000), 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(256))
 
     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
             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'}
     )
     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 DbMigrateVersion(Base, BaseModel):
     __tablename__ = 'db_migrate_version'
     __table_args__ = (
         {'extend_existing': True, 'mysql_engine': 'InnoDB',
          'mysql_charset': 'utf8'},
     )
     repository_id = Column('repository_id', String(250), primary_key=True)
     repository_path = Column('repository_path', Text)
     version = Column('version', Integer)