goa/goaconfig.py
author sylvain.thenault@logilab.fr
Thu, 23 Apr 2009 10:46:05 +0200
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"""google appengine configuration
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:organization: Logilab
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:copyright: 2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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import os
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from os.path import join
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from cubicweb import CW_SOFTWARE_ROOT
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from cubicweb.cwconfig import CubicWebConfiguration
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from cubicweb.web.webconfig import WebConfiguration, merge_options
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from cubicweb.server.serverconfig import ServerConfiguration
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from cubicweb.goa.dbmyams import load_schema
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UNSUPPORTED_OPTIONS = set(('connections-pool-size',
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                           'pyro-port', 'pyro-id', 'pyro-application-id',
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                           'pyro-ns-host', 'pyro-ns-port', 'pyro-ns-group',
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                           'https-url', 'host', 'pid-file', 'uid', 'base-url', 'log-file',
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                           'smtp-host', 'smtp-port',
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                           'embed-allowed',
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                           ))
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# XXX fix:
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# * default sender-name / sender-addr value
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# * what about *session-time
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# * check auth-mode=http + fix doc (eg require use-google-auth = False)
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class GAEConfiguration(ServerConfiguration, WebConfiguration):
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    """repository and web application in the same twisted process"""
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    name = 'app'
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    repo_method = 'inmemory'
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    options = merge_options(( 
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        ('included-cubes',
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         {'type' : 'csv',
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          'default': [],
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          'help': 'list of db model based cubes used by the application.',
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          'group': 'main', 'inputlevel': 1,
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          }),
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        ('included-yams-cubes',
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         {'type' : 'csv',
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          'default': [],
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          'help': 'list of yams based cubes used by the application.',
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          'group': 'main', 'inputlevel': 1,
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          }),
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        ('use-google-auth',
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         {'type' : 'yn',
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          'default': True,
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          'help': 'does this application rely on google authentication service or not.',
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          'group': 'main', 'inputlevel': 1,
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          }),
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        ('schema-type',
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         {'type' : 'choice', 'choices': ('yams', 'dbmodel'),
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          'default': 'yams',
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          'help': 'does this application is defining its schema using yams or db model.',
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          'group': 'main', 'inputlevel': 1,
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          }),
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        # overriden options
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        ('query-log-file',
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         {'type' : 'string',
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          'default': None,
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          'help': 'web application query log file: DON\'T SET A VALUE HERE WHEN '
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          'UPLOADING YOUR APPLICATION. This should only be used to analyse '
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          'queries issued by your application in the development environment.',
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          'group': 'main', 'inputlevel': 2,
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          }),
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        ('anonymous-user',
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         {'type' : 'string',
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          'default': None,
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          'help': 'login of the CubicWeb user account to use for anonymous user '
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          '(if you want to allow anonymous). This option will be ignored if '
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          'use-google-auth option is set (in which case you should control '
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          'anonymous access using the app.yaml file)',
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          'group': 'main', 'inputlevel': 1,
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          }),
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        ) + WebConfiguration.options + ServerConfiguration.options)
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    options = [(optname, optdict) for optname, optdict in options
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               if not optname in UNSUPPORTED_OPTIONS]
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    cubicweb_vobject_path = WebConfiguration.cubicweb_vobject_path | ServerConfiguration.cubicweb_vobject_path
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    cubicweb_vobject_path = list(cubicweb_vobject_path) + ['goa/appobjects']
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    cube_vobject_path = WebConfiguration.cube_vobject_path | ServerConfiguration.cube_vobject_path
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    # use file system schema
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    bootstrap_schema = read_application_schema = False
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    # schema is not persistent, don't load schema hooks (unavailable)
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    schema_hooks = False
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    # no user workflow for now
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    consider_user_state = False
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    # deactivate some hooks during [pre|post]create scripts execution
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    # (unique values check, owned_by/created_by relations setup)
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    free_wheel = True
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    if not os.environ.get('APYCOT_ROOT'):
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        CUBES_DIR = join(CW_SOFTWARE_ROOT, '../cubes')
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    def __init__(self, appid, apphome=None):
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        if apphome is None:
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            apphome = 'data'
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        self._apphome = apphome
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        self._base_url = None
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        CubicWebConfiguration.__init__(self, appid)
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    def __getitem__(self, key):
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        if key == 'connections-pool-size':
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            return 4 # > 1 to allow multiple user sessions in tests
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        if key == 'base-url':
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            return self._base_url
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        return super(GAEConfiguration, self).__getitem__(key)
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    # overriden from cubicweb base configuration
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    @property
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    def apphome(self):
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        return self._apphome
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    def cubes(self):
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        """return the list of top level cubes used by this instance (eg
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        without dependencies)
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        """
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        if self._cubes is None:
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            cubes = self['included-cubes'] + self['included-yams-cubes']
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            cubes = self.expand_cubes(cubes)
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            return self.reorder_cubes(cubes)
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        return self._cubes
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    def vc_config(self):
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        """return CubicWeb's engine and application's cube versions number"""
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        return {}
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    # overriden from cubicweb web configuration
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    def instance_md5_version(self):
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        return ''
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    def _init_base_url(self):
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        pass
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    # overriden from cubicweb server configuration
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    def sources(self):
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        return {'system': {'adapter': 'gae'}}
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    def load_schema(self, schemaclasses=None, extrahook=None):
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        try:
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            return self._schema
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        except AttributeError:
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            self._schema = load_schema(self, schemaclasses, extrahook)
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            return self._schema
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    # goa specific
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    def repo_session(self, sessionid):
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        return self.repository()._sessions[sessionid]
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    def is_anonymous_user(self, login):
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        if self['use-google-auth']:
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            from google.appengine.api import users
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            return users.get_current_user() is None
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        else:
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            return login == self.anonymous_user()[0]