server/__init__.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Sat, 09 Oct 2010 00:05:52 +0200
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parent 6126 aca6a2c357fd
child 6957 ffda12be2e9f
child 7056 51f88f13d6f3
permissions -rw-r--r--
[schema / sources] store data sources as cubicweb entities this implies several changes: * new CWSource / CWSourceHostConfig entity types * only the system sources and default admin login/password stored in sources file (other stuff will be ignored) * on startup, get sources definition from the database * every entities have a cw_source relation * a facet allow filtering
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# copyright 2003-2010 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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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""Server subcube of cubicweb : defines objects used only on the server
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(repository) side
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This module contains functions to initialize a new repository.
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"""
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from __future__ import with_statement
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__docformat__ = "restructuredtext en"
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import sys
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from os.path import join, exists
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from glob import glob
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from logilab.common.modutils import LazyObject
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from logilab.common.textutils import splitstrip
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from yams import BASE_GROUPS
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from cubicweb import CW_SOFTWARE_ROOT
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# server-side debugging #########################################################
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# server debugging flags. They may be combined using binary operators.
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DBG_NONE = 0  # no debug information
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DBG_RQL = 1   # rql execution information
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DBG_SQL = 2   # executed sql
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DBG_REPO = 4  # repository events
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DBG_MS = 8    # multi-sources
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DBG_MORE = 16 # more verbosity
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DBG_ALL = 1 + 2 + 4 + 8 + 16
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# current debug mode
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DEBUG = 0
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def set_debug(debugmode):
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    """change the repository debugging mode"""
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    global DEBUG
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    if not debugmode:
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        DEBUG = 0
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        return
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    if isinstance(debugmode, basestring):
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        for mode in splitstrip(debugmode, sep='|'):
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            DEBUG |= globals()[mode]
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    else:
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        DEBUG |= debugmode
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class debugged(object):
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    """repository debugging context manager / decorator
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    Can be used either as a context manager:
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    >>> with debugged(server.DBG_RQL | server.DBG_REPO):
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    ...     # some code in which you want to debug repository activity,
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    ...     # seing information about RQL being executed an repository events.
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    or as a function decorator:
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    >>> @debugged(server.DBG_RQL | server.DBG_REPO)
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    ... def some_function():
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    ...     # some code in which you want to debug repository activity,
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    ...     # seing information about RQL being executed an repository events
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    debug mode will be reseted at its original value when leaving the "with"
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    block or the decorated function
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    """
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    def __init__(self, debugmode):
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        self.debugmode = debugmode
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        self._clevel = None
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    def __enter__(self):
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        """enter with block"""
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        self._clevel = DEBUG
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        set_debug(self.debugmode)
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    def __exit__(self, exctype, exc, traceback):
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        """leave with block"""
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        set_debug(self._clevel)
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        return traceback is None
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    def __call__(self, func):
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        """decorate function"""
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        def wrapped(*args, **kwargs):
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            _clevel = DEBUG
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            set_debug(self.debugmode)
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            try:
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                return func(*args, **kwargs)
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            finally:
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                set_debug(self._clevel)
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        return wrapped
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# database initialization ######################################################
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def create_user(session, login, pwd, *groups):
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parents: 4252
diff changeset
   111
    # monkey patch this method if you want to customize admin/anon creation
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   112
    # (that maybe necessary if you change CWUser's schema)
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b2a3232783f8 fix create_user function introduced in d6ae30c5d055 for database initialization: messup admin user groups when anon is created due to missing restriction
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parents: 4612
diff changeset
   113
    user = session.create_entity('CWUser', login=login, upassword=pwd)
4612
d6ae30c5d055 added a function to create admin/anon user during db initialization process so one get a chance to monkey patch it
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parents: 4252
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   114
    for group in groups:
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   115
        session.execute('SET U in_group G WHERE U eid %(u)s, G name %(group)s',
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   116
                        {'u': user.eid, 'group': group})
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   117
    return user
4612
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parents: 4252
diff changeset
   118
0
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   119
def init_repository(config, interactive=True, drop=False, vreg=None):
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   120
    """initialise a repository database by creating tables add filling them
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   121
    with the minimal set of entities (ie at least the schema, base groups and
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   122
    a initial user)
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   123
    """
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   124
    from cubicweb.dbapi import in_memory_cnx
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   125
    from cubicweb.server.repository import Repository
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   126
    from cubicweb.server.utils import manager_userpasswd
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   127
    from cubicweb.server.sqlutils import sqlexec, sqlschema, sqldropschema
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   128
    # configuration to avoid db schema loading and user'state checking
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   129
    # on connection
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   130
    config.creating = True
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   131
    config.consider_user_state = False
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   132
    config.set_language = False
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aca6a2c357fd [repository] enabled sources refactoring: to avoid error, we should always have all known source in repo.sources_by_uri and only enabled ones in repo.sources, so we still have access to the definition of temporarily disabled sources
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   133
    # only enable the system source at initialization time
0
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   134
    repo = Repository(config, vreg=vreg)
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   135
    schema = repo.schema
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   136
    sourcescfg = config.sources()
2396
8bfb99d7bbcc [cw-ctl] improve dialog messages
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2395
diff changeset
   137
    _title = '-> creating tables '
8bfb99d7bbcc [cw-ctl] improve dialog messages
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parents: 2395
diff changeset
   138
    print _title,
0
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   139
    source = sourcescfg['system']
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   140
    driver = source['db-driver']
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   141
    sqlcnx = repo.system_source.get_connection()
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   142
    sqlcursor = sqlcnx.cursor()
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95da5d9f0870 give session to doexec so it's able to rollback the connection on unexpected error
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parents: 2172
diff changeset
   143
    execute = sqlcursor.execute
0
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   144
    if drop:
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   145
        dropsql = sqldropschema(schema, driver)
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   146
        try:
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   147
            sqlexec(dropsql, execute)
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diff changeset
   148
        except Exception, ex:
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92bba46b853f [cw-ctl] improve dialog messages
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diff changeset
   149
            print '-> drop failed, skipped (%s).' % ex
0
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   150
            sqlcnx.rollback()
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   151
    # schema entities and relations tables
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   152
    # can't skip entities table even if system source doesn't support them,
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   153
    # they are used sometimes by generated sql. Keeping them empty is much
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   154
    # simpler than fixing this...
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54969eec48eb misc fixes to ensure logilab.db compatibility
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parents: 4759
diff changeset
   155
    schemasql = sqlschema(schema, driver)
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parents: 4759
diff changeset
   156
    #skip_entities=[str(e) for e in schema.entities()
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parents: 4759
diff changeset
   157
    #               if not repo.system_source.support_entity(str(e))])
4913
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4848
diff changeset
   158
    sqlexec(schemasql, execute, pbtitle=_title, delimiter=';;')
0
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   159
    sqlcursor.close()
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   160
    sqlcnx.commit()
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   161
    sqlcnx.close()
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   162
    session = repo.internal_session()
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c8a5ac2d1eaa [schema / sources] store data sources as cubicweb entities
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parents: 6126
diff changeset
   163
    # insert entity representing the system source
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parents: 6126
diff changeset
   164
    ssource = session.create_entity('CWSource', type=u'native', name=u'system')
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parents: 6126
diff changeset
   165
    repo.system_source.eid = ssource.eid
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parents: 6126
diff changeset
   166
    session.execute('SET X cw_source X WHERE X eid %(x)s', {'x': ssource.eid})
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parents: 6126
diff changeset
   167
    # insert base groups and default admin
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diff changeset
   168
    print '-> inserting default user and default groups.'
0
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   169
    try:
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   170
        login = unicode(sourcescfg['admin']['login'])
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   171
        pwd = sourcescfg['admin']['password']
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   172
    except KeyError:
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   173
        if interactive:
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   174
            msg = 'enter login and password of the initial manager account'
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   175
            login, pwd = manager_userpasswd(msg=msg, confirm=True)
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   176
        else:
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   177
            login, pwd = unicode(source['db-user']), source['db-password']
2595
e76bf303c6f2 [F server test] sort for test predictability
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2593
diff changeset
   178
    # sort for eid predicatability as expected in some server tests
e76bf303c6f2 [F server test] sort for test predictability
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diff changeset
   179
    for group in sorted(BASE_GROUPS):
6427
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diff changeset
   180
        session.create_entity('CWGroup', name=unicode(group))
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diff changeset
   181
    admin = create_user(session, login, pwd, 'managers')
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diff changeset
   182
    session.execute('SET X owned_by U WHERE X is IN (CWGroup,CWSource), U eid %(u)s',
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diff changeset
   183
                    {'u': admin.eid})
0
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   184
    session.commit()
5750
b3bc214cd479 [repo] on repository initialization, properly shutdown intermediary repository
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parents: 5424
diff changeset
   185
    repo.shutdown()
0
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parents:
diff changeset
   186
    # reloging using the admin user
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   187
    config._cubes = None # avoid assertion error
3647
2941f4a0aab9 refactor repo authentication to allow pluggable authentifier to login with something else than a password
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parents: 3530
diff changeset
   188
    repo, cnx = in_memory_cnx(config, login, password=pwd)
6427
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parents: 6126
diff changeset
   189
    repo.system_source.eid = ssource.eid # redo this manually
3699
20ba545e00e1 initialize entity classes in repository initialization
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parents: 3530
diff changeset
   190
    # trigger vreg initialisation of entity classes
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parents: 3530
diff changeset
   191
    config.cubicweb_appobject_path = set(('entities',))
20ba545e00e1 initialize entity classes in repository initialization
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parents: 3530
diff changeset
   192
    config.cube_appobject_path = set(('entities',))
20ba545e00e1 initialize entity classes in repository initialization
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parents: 3530
diff changeset
   193
    repo.vreg.set_schema(repo.schema)
0
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diff changeset
   194
    assert len(repo.sources) == 1, repo.sources
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   195
    handler = config.migration_handler(schema, interactive=False,
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   196
                                       cnx=cnx, repo=repo)
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7967d3766ecf fix #544758 by calling custom sql scripts in add_cubes.
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parents: 3823
diff changeset
   197
    # install additional driver specific sql files
7967d3766ecf fix #544758 by calling custom sql scripts in add_cubes.
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diff changeset
   198
    handler.install_custom_sql_scripts(join(CW_SOFTWARE_ROOT, 'schemas'), driver)
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parents: 3823
diff changeset
   199
    for directory in reversed(config.cubes_path()):
7967d3766ecf fix #544758 by calling custom sql scripts in add_cubes.
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diff changeset
   200
        handler.install_custom_sql_scripts(join(directory, 'schema'), driver)
4759
af2e6c377c71 cleanups
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parents: 4634
diff changeset
   201
    # serialize the schema
0
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   202
    initialize_schema(config, schema, handler)
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diff changeset
   203
    # yoo !
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diff changeset
   204
    cnx.commit()
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diff changeset
   205
    repo.system_source.init_creating()
0
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diff changeset
   206
    cnx.commit()
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diff changeset
   207
    cnx.close()
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diff changeset
   208
    session.close()
4766
162b2b127b15 [test] get a chance to get proper garbage collection when running pytest on whole cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4759
diff changeset
   209
    repo.shutdown()
0
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parents:
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   210
    # restore initial configuration
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parents:
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   211
    config.creating = False
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   212
    config.consider_user_state = True
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diff changeset
   213
    config.set_language = True
2476
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2458
diff changeset
   214
    print '-> database for instance %s initialized.' % config.appid
0
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parents:
diff changeset
   215
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parents:
diff changeset
   216
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diff changeset
   217
def initialize_schema(config, schema, mhandler, event='create'):
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parents:
diff changeset
   218
    from cubicweb.server.schemaserial import serialize_schema
4834
b718626a0e60 move hooks activation control on session object, so we can have a per transaction control. Added a new `hooks_control` context manager for usual modification of hooks activation.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4831
diff changeset
   219
    from cubicweb.server.session import hooks_control
b718626a0e60 move hooks activation control on session object, so we can have a per transaction control. Added a new `hooks_control` context manager for usual modification of hooks activation.
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diff changeset
   220
    session = mhandler.session
0
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parents:
diff changeset
   221
    paths = [p for p in config.cubes_path() + [config.apphome]
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parents:
diff changeset
   222
             if exists(join(p, 'migration'))]
4834
b718626a0e60 move hooks activation control on session object, so we can have a per transaction control. Added a new `hooks_control` context manager for usual modification of hooks activation.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4831
diff changeset
   223
    # deactivate every hooks but those responsible to set metadata
5090
8c39d2bf58fd [repo creation] removing existing entities of 'single' cardinality relatino should be considered as 'activeintegrity' hook. Also don't disable that category during repo creation to avoid pb such as two default workflows for one entity types
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5043
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    # so, NO INTEGRITY CHECKS are done, to have quicker db creation.
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    # Active integrity is kept else we may pb such as two default
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    # workflows for one entity type.
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    with hooks_control(session, session.HOOKS_DENY_ALL, 'metadata',
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                       'activeintegrity'):
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        # execute cubicweb's pre<event> script
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        mhandler.exec_event_script('pre%s' % event)
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        # execute cubes pre<event> script if any
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        for path in reversed(paths):
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            mhandler.exec_event_script('pre%s' % event, path)
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        # enter instance'schema into the database
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        session.set_pool()
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        serialize_schema(session, schema)
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        # execute cubicweb's post<event> script
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        mhandler.exec_event_script('post%s' % event)
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        # execute cubes'post<event> script if any
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        for path in reversed(paths):
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            mhandler.exec_event_script('post%s' % event, path)
0
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# sqlite'stored procedures have to be registered at connection opening time
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from logilab.database import SQL_CONNECT_HOOKS
0
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# add to this set relations which should have their add security checking done
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# *BEFORE* adding the actual relation (done after by default)
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BEFORE_ADD_RELATIONS = set(('owned_by',))
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# add to this set relations which should have their add security checking done
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# *at COMMIT TIME* (done after by default)
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ON_COMMIT_ADD_RELATIONS = set(())
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# available sources registry
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SOURCE_TYPES = {'native': LazyObject('cubicweb.server.sources.native', 'NativeSQLSource'),
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                # XXX private sources installed by an external cube
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                'pyrorql': LazyObject('cubicweb.server.sources.pyrorql', 'PyroRQLSource'),
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                'ldapuser': LazyObject('cubicweb.server.sources.ldapuser', 'LDAPUserSource'),
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                }