server/__init__.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Mon, 19 Jul 2010 17:22:10 +0200
branchstable
changeset 5996 c87bc42437f1
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permissions -rw-r--r--
[deprecation] remove 3.8 deprecation warning
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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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   112
    # monkey patch this method if you want to customize admin/anon creation
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   113
    # (that maybe necessary if you change CWUser's schema)
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   114
    user = session.create_entity('CWUser', login=login, upassword=pwd)
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   115
    for group in groups:
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   116
        session.execute('SET U in_group G WHERE U eid %(u)s, G name %(group)s',
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   117
                        {'u': user.eid, 'group': group})
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   118
    return user
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   119
0
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def init_repository(config, interactive=True, drop=False, vreg=None):
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   121
    """initialise a repository database by creating tables add filling them
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    with the minimal set of entities (ie at least the schema, base groups and
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   123
    a initial user)
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   124
    """
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   125
    from cubicweb.dbapi import in_memory_cnx
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   126
    from cubicweb.server.repository import Repository
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    from cubicweb.server.utils import manager_userpasswd
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    from cubicweb.server.sqlutils import sqlexec, sqlschema, sqldropschema
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    # configuration to avoid db schema loading and user'state checking
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    # on connection
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    config.creating = True
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    config.consider_user_state = False
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    config.set_language = False
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    # only enable the system source at initialization time + admin which is not
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    # an actual source but contains initial manager account information
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    config.enabled_sources = ('system', 'admin')
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    repo = Repository(config, vreg=vreg)
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   138
    assert len(repo.sources) == 1, repo.sources
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    schema = repo.schema
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   140
    sourcescfg = config.sources()
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   141
    _title = '-> creating tables '
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   142
    print _title,
0
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   143
    source = sourcescfg['system']
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    driver = source['db-driver']
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    sqlcnx = repo.system_source.get_connection()
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   146
    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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   147
    execute = sqlcursor.execute
0
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   148
    if drop:
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   149
        dropsql = sqldropschema(schema, driver)
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        try:
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   151
            sqlexec(dropsql, execute)
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        except Exception, ex:
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   153
            print '-> drop failed, skipped (%s).' % ex
0
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   154
            sqlcnx.rollback()
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   155
    # schema entities and relations tables
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   156
    # can't skip entities table even if system source doesn't support them,
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   157
    # they are used sometimes by generated sql. Keeping them empty is much
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   158
    # simpler than fixing this...
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diff changeset
   159
    schemasql = sqlschema(schema, driver)
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diff changeset
   160
    #skip_entities=[str(e) for e in schema.entities()
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diff changeset
   161
    #               if not repo.system_source.support_entity(str(e))])
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diff changeset
   162
    sqlexec(schemasql, execute, pbtitle=_title, delimiter=';;')
0
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   163
    sqlcursor.close()
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   164
    sqlcnx.commit()
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   165
    sqlcnx.close()
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   166
    session = repo.internal_session()
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   167
    try:
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   168
        login = unicode(sourcescfg['admin']['login'])
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   169
        pwd = sourcescfg['admin']['password']
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   170
    except KeyError:
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   171
        if interactive:
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   172
            msg = 'enter login and password of the initial manager account'
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   173
            login, pwd = manager_userpasswd(msg=msg, confirm=True)
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   174
        else:
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   175
            login, pwd = unicode(source['db-user']), source['db-password']
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   176
    print '-> inserting default user and default groups.'
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e76bf303c6f2 [F server test] sort for test predictability
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diff changeset
   177
    # sort for eid predicatability as expected in some server tests
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diff changeset
   178
    for group in sorted(BASE_GROUPS):
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diff changeset
   179
        session.execute('INSERT CWGroup X: X name %(name)s',
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   180
                        {'name': unicode(group)})
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   181
    create_user(session, login, pwd, 'managers')
0
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   182
    session.commit()
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b3bc214cd479 [repo] on repository initialization, properly shutdown intermediary repository
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   183
    repo.shutdown()
0
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   184
    # reloging using the admin user
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   185
    config._cubes = None # avoid assertion error
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   186
    repo, cnx = in_memory_cnx(config, login, password=pwd)
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diff changeset
   187
    # trigger vreg initialisation of entity classes
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diff changeset
   188
    config.cubicweb_appobject_path = set(('entities',))
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   189
    config.cube_appobject_path = set(('entities',))
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diff changeset
   190
    repo.vreg.set_schema(repo.schema)
0
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   191
    assert len(repo.sources) == 1, repo.sources
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   192
    handler = config.migration_handler(schema, interactive=False,
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   193
                                       cnx=cnx, repo=repo)
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7967d3766ecf fix #544758 by calling custom sql scripts in add_cubes.
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diff changeset
   194
    # install additional driver specific sql files
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   195
    handler.install_custom_sql_scripts(join(CW_SOFTWARE_ROOT, 'schemas'), driver)
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diff changeset
   196
    for directory in reversed(config.cubes_path()):
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   197
        handler.install_custom_sql_scripts(join(directory, 'schema'), driver)
4759
af2e6c377c71 cleanups
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diff changeset
   198
    # serialize the schema
0
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   199
    initialize_schema(config, schema, handler)
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   200
    # yoo !
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   201
    cnx.commit()
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   202
    config.enabled_sources = None
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diff changeset
   203
    for uri, source_config in config.sources().items():
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   204
        if uri in ('admin', 'system'):
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   205
            # not an actual source or init_creating already called
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   206
            continue
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   207
        source = repo.get_source(uri, source_config)
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   208
        source.init_creating()
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   209
    cnx.commit()
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   210
    cnx.close()
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diff changeset
   211
    session.close()
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162b2b127b15 [test] get a chance to get proper garbage collection when running pytest on whole cw
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diff changeset
   212
    repo.shutdown()
0
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   213
    # restore initial configuration
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   214
    config.creating = False
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   215
    config.consider_user_state = True
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   216
    config.set_language = True
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1294a6bdf3bf application -> instance where it makes sense
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diff changeset
   217
    print '-> database for instance %s initialized.' % config.appid
0
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parents:
diff changeset
   218
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   219
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   220
def initialize_schema(config, schema, mhandler, event='create'):
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   221
    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.
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diff changeset
   222
    from cubicweb.server.session import hooks_control
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   223
    session = mhandler.session
0
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   224
    paths = [p for p in config.cubes_path() + [config.apphome]
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   225
             if exists(join(p, 'migration'))]
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parents: 4831
diff changeset
   226
    # deactivate every hooks but those responsible to set metadata
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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
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diff changeset
   227
    # so, NO INTEGRITY CHECKS are done, to have quicker db creation.
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
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diff changeset
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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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                }