server/sources/datafeed.py
author Aurelien Campeas <aurelien.campeas@logilab.fr>
Tue, 27 Jan 2015 10:20:15 +0100
changeset 10197 7c732d2abbc1
parent 9975 98b4f7fa2e3a
child 9990 c84ad981fc4a
permissions -rw-r--r--
[restore/portable] properly restore the numrange generator If the dump format version is 1.1, read and restore numranges. Closes #4870338
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# copyright 2010-2014 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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"""datafeed sources: copy data from an external data stream into the system
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database
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"""
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import urllib2
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import StringIO
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from os.path import exists
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from datetime import datetime, timedelta
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from base64 import b64decode
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from cookielib import CookieJar
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from lxml import etree
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from cubicweb import RegistryNotFound, ObjectNotFound, ValidationError, UnknownEid
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from cubicweb.server.repository import preprocess_inlined_relations
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from cubicweb.server.sources import AbstractSource
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from cubicweb.appobject import AppObject
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class DataFeedSource(AbstractSource):
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    use_cwuri_as_url = True
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    options = (
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        ('synchronize',
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         {'type' : 'yn',
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          'default': True,
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          'help': ('Is the repository responsible to automatically import '
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                   'content from this source? '
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                   'You should say yes unless you don\'t want this behaviour '
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                   'or if you use a multiple repositories setup, in which '
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                   'case you should say yes on one repository, no on others.'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        ('synchronization-interval',
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         {'type' : 'time',
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          'default': '5min',
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          'help': ('Interval in seconds between synchronization with the '
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                   'external source (default to 5 minutes, must be >= 1 min).'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        ('max-lock-lifetime',
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         {'type' : 'time',
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          'default': '1h',
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          'help': ('Maximum time allowed for a synchronization to be run. '
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                   'Exceeded that time, the synchronization will be considered '
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                   'as having failed and not properly released the lock, hence '
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                   'it won\'t be considered'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        ('delete-entities',
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         {'type' : 'yn',
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          'default': False,
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          'help': ('Should already imported entities not found anymore on the '
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                   'external source be deleted?'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        ('logs-lifetime',
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         {'type': 'time',
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          'default': '10d',
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          'help': ('Time before logs from datafeed imports are deleted.'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        ('http-timeout',
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         {'type': 'time',
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          'default': '1min',
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          'help': ('Timeout of HTTP GET requests, when synchronizing a source.'),
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          'group': 'datafeed-source', 'level': 2,
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          }),
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        )
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    def check_config(self, source_entity):
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        """check configuration of source entity"""
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        typed_config = super(DataFeedSource, self).check_config(source_entity)
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        if typed_config['synchronization-interval'] < 60:
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            _ = source_entity._cw._
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            msg = _('synchronization-interval must be greater than 1 minute')
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            raise ValidationError(source_entity.eid, {'config': msg})
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        return typed_config
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    def _entity_update(self, source_entity):
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        super(DataFeedSource, self)._entity_update(source_entity)
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        self.parser_id = source_entity.parser
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        self.latest_retrieval = source_entity.latest_retrieval
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    def update_config(self, source_entity, typed_config):
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        """update configuration from source entity. `typed_config` is config
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   104
        properly typed with defaults set
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        """
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   106
        super(DataFeedSource, self).update_config(source_entity, typed_config)
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   107
        self.synchro_interval = timedelta(seconds=typed_config['synchronization-interval'])
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   108
        self.max_lock_lifetime = timedelta(seconds=typed_config['max-lock-lifetime'])
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   109
        self.http_timeout = typed_config['http-timeout']
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   110
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    def init(self, activated, source_entity):
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        super(DataFeedSource, self).init(activated, source_entity)
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        self.parser_id = source_entity.parser
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   114
        self.load_mapping(source_entity._cw)
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    def _get_parser(self, cnx, **kwargs):
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        return self.repo.vreg['parsers'].select(
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            self.parser_id, cnx, source=self, **kwargs)
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    def load_mapping(self, cnx):
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        self.mapping = {}
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        self.mapping_idx = {}
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        try:
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            parser = self._get_parser(cnx)
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   125
        except (RegistryNotFound, ObjectNotFound):
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   126
            return # no parser yet, don't go further
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        self._load_mapping(cnx, parser=parser)
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   129
    def add_schema_config(self, schemacfg, checkonly=False, parser=None):
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        """added CWSourceSchemaConfig, modify mapping accordingly"""
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   131
        if parser is None:
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            parser = self._get_parser(schemacfg._cw)
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        parser.add_schema_config(schemacfg, checkonly)
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   134
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   135
    def del_schema_config(self, schemacfg, checkonly=False, parser=None):
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        """deleted CWSourceSchemaConfig, modify mapping accordingly"""
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        if parser is None:
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            parser = self._get_parser(schemacfg._cw)
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   139
        parser.del_schema_config(schemacfg, checkonly)
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   140
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   141
    def fresh(self):
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   142
        if self.latest_retrieval is None:
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   143
            return False
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   144
        return datetime.utcnow() < (self.latest_retrieval + self.synchro_interval)
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   146
    def update_latest_retrieval(self, cnx):
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   147
        self.latest_retrieval = datetime.utcnow()
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   148
        cnx.execute('SET X latest_retrieval %(date)s WHERE X eid %(x)s',
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                    {'x': self.eid, 'date': self.latest_retrieval})
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        cnx.commit()
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   151
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    def acquire_synchronization_lock(self, cnx):
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   153
        # XXX race condition until WHERE of SET queries is executed using
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   154
        # 'SELECT FOR UPDATE'
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   155
        now = datetime.utcnow()
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   156
        if not cnx.execute(
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   157
            'SET X in_synchronization %(now)s WHERE X eid %(x)s, '
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   158
            'X in_synchronization NULL OR X in_synchronization < %(maxdt)s',
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   159
            {'x': self.eid, 'now': now, 'maxdt': now - self.max_lock_lifetime}):
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   160
            self.error('concurrent synchronization detected, skip pull')
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   161
            cnx.commit()
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   162
            return False
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   163
        cnx.commit()
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   164
        return True
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   165
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   166
    def release_synchronization_lock(self, cnx):
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   167
        cnx.execute('SET X in_synchronization NULL WHERE X eid %(x)s',
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   168
                    {'x': self.eid})
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   169
        cnx.commit()
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   170
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   171
    def pull_data(self, cnx, force=False, raise_on_error=False):
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   172
        """Launch synchronization of the source if needed.
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   173
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   174
        This method is responsible to handle commit/rollback on the given
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   175
        connection.
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   176
        """
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   177
        if not force and self.fresh():
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   178
            return {}
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   179
        if not self.acquire_synchronization_lock(cnx):
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   180
            return {}
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   181
        try:
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   182
            return self._pull_data(cnx, force, raise_on_error)
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   183
        finally:
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   184
            cnx.rollback() # rollback first in case there is some dirty
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   185
                           # transaction remaining
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   186
            self.release_synchronization_lock(cnx)
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diff changeset
   187
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   188
    def _pull_data(self, cnx, force=False, raise_on_error=False):
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   189
        importlog = self.init_import_log(cnx)
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   190
        myuris = self.source_cwuris(cnx)
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   191
        parser = self._get_parser(cnx, sourceuris=myuris, import_log=importlog)
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   192
        if self.process_urls(parser, self.urls, raise_on_error):
9517
3338b2205ea3 Typo in comments and error messages
Dimitri Papadopoulos <dimitri.papadopoulos@cea.fr>
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diff changeset
   193
            self.warning("some error occurred, don't attempt to delete entities")
8430
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diff changeset
   194
        else:
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   195
            parser.handle_deletion(self.config, cnx, myuris)
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   196
        self.update_latest_retrieval(cnx)
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   197
        stats = parser.stats
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diff changeset
   198
        if stats.get('created'):
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diff changeset
   199
            importlog.record_info('added %s entities' % len(stats['created']))
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   200
        if stats.get('updated'):
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diff changeset
   201
            importlog.record_info('updated %s entities' % len(stats['updated']))
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   202
        importlog.write_log(cnx, end_timestamp=self.latest_retrieval)
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diff changeset
   203
        cnx.commit()
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   204
        return stats
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    def process_urls(self, parser, urls, raise_on_error=False):
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        error = False
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        for url in urls:
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            self.info('pulling data from %s', url)
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            try:
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                if parser.process(url, raise_on_error):
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                    error = True
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            except IOError as exc:
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                if raise_on_error:
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                    raise
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                parser.import_log.record_error(
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                    'could not pull data while processing %s: %s'
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                    % (url, exc))
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                error = True
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            except Exception as exc:
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                if raise_on_error:
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                    raise
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                self.exception('error while processing %s: %s',
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                               url, exc)
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                error = True
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        return error
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    def before_entity_insertion(self, cnx, lid, etype, eid, sourceparams):
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        """called by the repository when an eid has been attributed for an
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        entity stored here but the entity has not been inserted in the system
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        table yet.
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        This method must return the an Entity instance representation of this
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        entity.
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        """
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        entity = super(DataFeedSource, self).before_entity_insertion(
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            cnx, lid, etype, eid, sourceparams)
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        entity.cw_edited['cwuri'] = lid.decode('utf-8')
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        entity.cw_edited.set_defaults()
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        sourceparams['parser'].before_entity_copy(entity, sourceparams)
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        return entity
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    def after_entity_insertion(self, cnx, lid, entity, sourceparams):
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        """called by the repository after an entity stored here has been
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        inserted in the system table.
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        """
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        relations = preprocess_inlined_relations(cnx, entity)
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        if cnx.is_hook_category_activated('integrity'):
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            entity.cw_edited.check(creation=True)
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        self.repo.system_source.add_entity(cnx, entity)
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        entity.cw_edited.saved = entity._cw_is_saved = True
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        sourceparams['parser'].after_entity_copy(entity, sourceparams)
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        # call hooks for inlined relations
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        call_hooks = self.repo.hm.call_hooks
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        if self.should_call_hooks:
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            for attr, value in relations:
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                call_hooks('before_add_relation', cnx,
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                           eidfrom=entity.eid, rtype=attr, eidto=value)
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                call_hooks('after_add_relation', cnx,
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                           eidfrom=entity.eid, rtype=attr, eidto=value)
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    def source_cwuris(self, cnx):
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        sql = ('SELECT extid, eid, type FROM entities, cw_source_relation '
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               'WHERE entities.eid=cw_source_relation.eid_from '
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               'AND cw_source_relation.eid_to=%s' % self.eid)
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        return dict((b64decode(uri), (eid, type))
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                    for uri, eid, type in cnx.system_sql(sql).fetchall())
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    def init_import_log(self, cnx, **kwargs):
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        dataimport = cnx.create_entity('CWDataImport', cw_import_of=self,
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                                           start_timestamp=datetime.utcnow(),
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                                           **kwargs)
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        dataimport.init()
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        return dataimport
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class DataFeedParser(AppObject):
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    __registry__ = 'parsers'
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    def __init__(self, cnx, source, sourceuris=None, import_log=None, **kwargs):
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        super(DataFeedParser, self).__init__(cnx, **kwargs)
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        self.source = source
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        self.sourceuris = sourceuris
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        self.import_log = import_log
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        self.stats = {'created': set(), 'updated': set(), 'checked': set()}
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    def normalize_url(self, url):
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        from cubicweb.sobjects import URL_MAPPING # available after registration
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        for mappedurl in URL_MAPPING:
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            if url.startswith(mappedurl):
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                return url.replace(mappedurl, URL_MAPPING[mappedurl], 1)
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        return url
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    def add_schema_config(self, schemacfg, checkonly=False):
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        """added CWSourceSchemaConfig, modify mapping accordingly"""
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        msg = schemacfg._cw._("this parser doesn't use a mapping")
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        raise ValidationError(schemacfg.eid, {None: msg})
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    def del_schema_config(self, schemacfg, checkonly=False):
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        """deleted CWSourceSchemaConfig, modify mapping accordingly"""
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        msg = schemacfg._cw._("this parser doesn't use a mapping")
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        raise ValidationError(schemacfg.eid, {None: msg})
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    def extid2entity(self, uri, etype, **sourceparams):
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        """return an entity for the given uri. May return None if it should be
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   306
        skipped
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   307
        """
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   308
        cnx = self._cw
7534
d58a9d96aad8 [datafeed, cw.xml] xml now carry entity's source information, interpreted at the other end so that for instance when an entity from elo is seen when importing cwo, it's properly marked as coming from elo source if one exists
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7533
diff changeset
   309
        # if cwsource is specified and repository has a source with the same
d58a9d96aad8 [datafeed, cw.xml] xml now carry entity's source information, interpreted at the other end so that for instance when an entity from elo is seen when importing cwo, it's properly marked as coming from elo source if one exists
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7533
diff changeset
   310
        # name, call extid2eid on that source so entity will be properly seen as
d58a9d96aad8 [datafeed, cw.xml] xml now carry entity's source information, interpreted at the other end so that for instance when an entity from elo is seen when importing cwo, it's properly marked as coming from elo source if one exists
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7533
diff changeset
   311
        # coming from this source
7699
d07cde311630 [datafeed] properly take care to cwsource=system in imported xml. Closes #1877017
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7698
diff changeset
   312
        source_uri = sourceparams.pop('cwsource', None)
d07cde311630 [datafeed] properly take care to cwsource=system in imported xml. Closes #1877017
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7698
diff changeset
   313
        if source_uri is not None and source_uri != 'system':
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   314
            source = cnx.repo.sources_by_uri.get(source_uri, self.source)
7699
d07cde311630 [datafeed] properly take care to cwsource=system in imported xml. Closes #1877017
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7698
diff changeset
   315
        else:
d07cde311630 [datafeed] properly take care to cwsource=system in imported xml. Closes #1877017
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7698
diff changeset
   316
            source = self.source
6957
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   317
        sourceparams['parser'] = self
7731
48e78934a4e2 [datafeed] properly encode/decode external uri
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7727
diff changeset
   318
        if isinstance(uri, unicode):
48e78934a4e2 [datafeed] properly encode/decode external uri
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7727
diff changeset
   319
            uri = uri.encode('utf-8')
7590
a9aad6c25836 closes #1793991: [datafeed] error handling: log unexpected exceptions / don't stop on first validation error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7552
diff changeset
   320
        try:
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   321
            eid = cnx.repo.extid2eid(source, str(uri), etype, cnx,
7698
1c7411535c2d [datafeed / fti] rather control a 'complete' parameter than setting empty attribute values
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7697
diff changeset
   322
                                         sourceparams=sourceparams)
8695
358d8bed9626 [toward-py3k] rewrite to "except AnException as exc:" (part of #2711624)
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 8694
diff changeset
   323
        except ValidationError as ex:
7950
99ae8c883ad3 [ms repository] when an exception is raised during extid2eid and no rollback is done, some manual cleanups have to be done (closes #1993420)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7934
diff changeset
   324
            # XXX use critical so they are seen during tests. Should consider
99ae8c883ad3 [ms repository] when an exception is raised during extid2eid and no rollback is done, some manual cleanups have to be done (closes #1993420)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7934
diff changeset
   325
            # raise_on_error instead?
99ae8c883ad3 [ms repository] when an exception is raised during extid2eid and no rollback is done, some manual cleanups have to be done (closes #1993420)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7934
diff changeset
   326
            self.source.critical('error while creating %s: %s', etype, ex)
8069
4341fb713b14 [datafeed log] properly log errors catched at the source level
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8068
diff changeset
   327
            self.import_log.record_error('error while creating %s: %s'
4341fb713b14 [datafeed log] properly log errors catched at the source level
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8068
diff changeset
   328
                                         % (etype, ex))
7590
a9aad6c25836 closes #1793991: [datafeed] error handling: log unexpected exceptions / don't stop on first validation error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7552
diff changeset
   329
            return None
7399
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   330
        if eid < 0:
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   331
            # entity has been moved away from its original source
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   332
            #
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   333
            # Don't give etype to entity_from_eid so we get UnknownEid if the
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   334
            # entity has been removed
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   335
            try:
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   336
                entity = cnx.entity_from_eid(-eid)
7399
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   337
            except UnknownEid:
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   338
                return None
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   339
            self.notify_updated(entity) # avoid later update from the source's data
972ed1843bd8 [multi-sources] support for moving an entity from an external source (closes #343818)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7398
diff changeset
   340
            return entity
6957
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   341
        if self.sourceuris is not None:
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   342
            self.sourceuris.pop(str(uri), None)
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   343
        return cnx.entity_from_eid(eid, etype)
6957
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   344
8409
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   345
    def process(self, url, raise_on_error=False):
6957
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   346
        """main callback: process the url"""
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   347
        raise NotImplementedError
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   348
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   349
    def before_entity_copy(self, entity, sourceparams):
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   350
        raise NotImplementedError
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   351
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   352
    def after_entity_copy(self, entity, sourceparams):
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   353
        self.stats['created'].add(entity.eid)
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   354
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   355
    def created_during_pull(self, entity):
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   356
        return entity.eid in self.stats['created']
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   357
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   358
    def updated_during_pull(self, entity):
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   359
        return entity.eid in self.stats['updated']
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   360
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   361
    def notify_updated(self, entity):
ffda12be2e9f [repository] #1460066: backport datafeed cube as cubicweb source
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents:
diff changeset
   362
        return self.stats['updated'].add(entity.eid)
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   363
8435
5064b6e0d6f4 [datafeed] correctly distinguish checked/updated
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8434
diff changeset
   364
    def notify_checked(self, entity):
5064b6e0d6f4 [datafeed] correctly distinguish checked/updated
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8434
diff changeset
   365
        return self.stats['checked'].add(entity.eid)
5064b6e0d6f4 [datafeed] correctly distinguish checked/updated
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8434
diff changeset
   366
8187
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   367
    def is_deleted(self, extid, etype, eid):
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   368
        """return True if the entity of given external id, entity type and eid
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   369
        is actually deleted. Always return True by default, put more sensible
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   370
        stuff in sub-classes.
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   371
        """
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   372
        return True
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   373
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   374
    def handle_deletion(self, config, cnx, myuris):
8430
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   375
        if config['delete-entities'] and myuris:
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   376
            byetype = {}
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   377
            for extid, (eid, etype) in myuris.iteritems():
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   378
                if self.is_deleted(extid, etype, eid):
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   379
                    byetype.setdefault(etype, []).append(str(eid))
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   380
            for etype, eids in byetype.iteritems():
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   381
                self.warning('delete %s %s entities', len(eids), etype)
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   382
                cnx.execute('DELETE %s X WHERE X eid IN (%s)'
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   383
                            % (etype, ','.join(eids)))
9975
98b4f7fa2e3a [datafeed] Commit after all deletions in datafeed parser
Denis Laxalde <denis.laxalde@logilab.fr>
parents: 9879
diff changeset
   384
            cnx.commit()
8430
5bee87a14bb1 fix ldap removal handling in ldapfeed (closes #2376625 and #2385133)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8429
diff changeset
   385
8188
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   386
    def update_if_necessary(self, entity, attrs):
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   387
        entity.complete(tuple(attrs))
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   388
        # check modification date and compare attribute values to only update
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   389
        # what's actually needed
8435
5064b6e0d6f4 [datafeed] correctly distinguish checked/updated
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8434
diff changeset
   390
        self.notify_checked(entity)
8188
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   391
        mdate = attrs.get('modification_date')
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   392
        if not mdate or mdate > entity.modification_date:
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   393
            attrs = dict( (k, v) for k, v in attrs.iteritems()
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   394
                          if v != getattr(entity, k))
1867e252e487 [repository] ldap-feed source. Closes #2086984
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8187
diff changeset
   395
            if attrs:
8483
4ba11607d84a [entity api] unify set_attributes / set_relations into a cw_set method. Closes #2423719
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8435
diff changeset
   396
                entity.cw_set(**attrs)
8434
39c5bb4dcc59 [ldapfeed] do not crash on ldap user deletion + pull + already deactivated users, cleanups (closes #2392933)
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8430
diff changeset
   397
                self.notify_updated(entity)
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   398
8547
f23ac525ddd1 [datafeed] properly call hooks for inlined relations on entity creation. Closes #2481156
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8529
diff changeset
   399
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   400
class DataFeedXMLParser(DataFeedParser):
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   401
8409
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   402
    def process(self, url, raise_on_error=False):
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   403
        """IDataFeedParser main entry point"""
7447
d5705c9bbe82 don't crash if we can't fetch data or if xml is malformed
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7446
diff changeset
   404
        try:
d5705c9bbe82 don't crash if we can't fetch data or if xml is malformed
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7446
diff changeset
   405
            parsed = self.parse(url)
8695
358d8bed9626 [toward-py3k] rewrite to "except AnException as exc:" (part of #2711624)
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 8694
diff changeset
   406
        except Exception as ex:
7533
43835fbdf97d [datafeed] actually raise on error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7527
diff changeset
   407
            if raise_on_error:
43835fbdf97d [datafeed] actually raise on error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7527
diff changeset
   408
                raise
8069
4341fb713b14 [datafeed log] properly log errors catched at the source level
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8068
diff changeset
   409
            self.import_log.record_error(str(ex))
7447
d5705c9bbe82 don't crash if we can't fetch data or if xml is malformed
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7446
diff changeset
   410
            return True
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   411
        error = False
9879
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   412
        commit = self._cw.commit
21278eb03bbf [datafeed sources] finish the session -> cnx switch
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 9860
diff changeset
   413
        rollback = self._cw.rollback
7447
d5705c9bbe82 don't crash if we can't fetch data or if xml is malformed
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7446
diff changeset
   414
        for args in parsed:
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   415
            try:
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   416
                self.process_item(*args)
8409
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   417
                # commit+set_cnxset instead of commit(free_cnxset=False) to let
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   418
                # other a chance to get our connections set
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   419
                commit()
8695
358d8bed9626 [toward-py3k] rewrite to "except AnException as exc:" (part of #2711624)
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 8694
diff changeset
   420
            except ValidationError as exc:
7385
29f050e39b09 [datafeed] propagate raise_on_error to parser's process method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7379
diff changeset
   421
                if raise_on_error:
29f050e39b09 [datafeed] propagate raise_on_error to parser's process method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7379
diff changeset
   422
                    raise
8409
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   423
                self.source.error('Skipping %s because of validation error %s'
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   424
                                  % (args, exc))
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   425
                rollback()
79534887943e [datafeed] fix/finish cleanup started by auc in 8393:c25b96ae4f8a: parser.process prototytpe is (url, raise_on_error=False). Drop partialcommit argument which were never specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8408
diff changeset
   426
                error = True
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   427
        return error
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   428
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   429
    def parse(self, url):
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   430
        if url.startswith('http'):
8187
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   431
            url = self.normalize_url(url)
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   432
            self.source.info('GET %s', url)
9224
5c6d6a9f4fc8 [datafeed] fix crash due to bad http_timeout handling. Closes #3096585
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 9182
diff changeset
   433
            stream = _OPENER.open(url, timeout=self.source.http_timeout)
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   434
        elif url.startswith('file://'):
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   435
            stream = open(url[7:])
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   436
        else:
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   437
            stream = StringIO.StringIO(url)
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   438
        return self.parse_etree(etree.parse(stream).getroot())
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   439
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   440
    def parse_etree(self, document):
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   441
        return [(document,)]
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   442
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   443
    def process_item(self, *args):
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   444
        raise NotImplementedError
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   445
8187
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   446
    def is_deleted(self, extid, etype, eid):
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   447
        if extid.startswith('http'):
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   448
            try:
9182
75493f6ca586 [datafeed] add a timeout config option (closes #2745677)
David Douard <david.douard@logilab.fr>
parents: 8695
diff changeset
   449
                _OPENER.open(self.normalize_url(extid), # XXX HTTP HEAD request
9224
5c6d6a9f4fc8 [datafeed] fix crash due to bad http_timeout handling. Closes #3096585
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 9182
diff changeset
   450
                             timeout=self.source.http_timeout)
8695
358d8bed9626 [toward-py3k] rewrite to "except AnException as exc:" (part of #2711624)
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 8694
diff changeset
   451
            except urllib2.HTTPError as ex:
8187
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   452
                if ex.code == 404:
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   453
                    return True
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   454
        elif extid.startswith('file://'):
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   455
            return exists(extid[7:])
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   456
        return False
981f6e487788 [datafeed] set delete-entities=yes is now safer, by checking each entity actually seems deleted. Closes #2165381
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 8069
diff changeset
   457
7378
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   458
# use a cookie enabled opener to use session cookie if any
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   459
_OPENER = urllib2.build_opener()
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   460
try:
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   461
    from logilab.common import urllib2ext
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   462
    _OPENER.add_handler(urllib2ext.HTTPGssapiAuthHandler())
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   463
except ImportError: # python-kerberos not available
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   464
    pass
86a1ae289f05 [datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7351
diff changeset
   465
_OPENER.add_handler(urllib2.HTTPCookieProcessor(CookieJar()))