115 lines
4.3 KiB
Python
115 lines
4.3 KiB
Python
# Authors:
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# Rob Crittenden <rcritten@redhat.com>
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#
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# Copyright (C) 2012 Red Hat
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# see file 'COPYING' for use and warranty information
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging
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from ipaserver.install import replication
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from ipalib import Registry
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from ipalib import Updater
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from ipalib import errors
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logger = logging.getLogger(__name__)
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register = Registry()
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EXCLUDE_TEMPLATE = '(objectclass=*) $ EXCLUDE %s'
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@register()
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class update_replica_attribute_lists(Updater):
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"""
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Run through all replication agreements and ensure that EXCLUDE list
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has all the required attributes so that we don't cause replication
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storms.
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"""
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def execute(self, **options):
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# We need an LDAPClient connection to the backend
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logger.debug("Start replication agreement exclude list update task")
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# Find suffixes
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suffixes = self.api.Command.topologysuffix_find()['result']
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for suffix in suffixes:
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suffix_name = suffix['cn'][0]
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# Find segments
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sgmts = self.api.Command.topologysegment_find(
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suffix_name, all=True)['result']
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for segment in sgmts:
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updates = {}
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updates = self._update_attr(
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segment, updates,
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'nsds5replicatedattributelist',
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replication.EXCLUDES, template=EXCLUDE_TEMPLATE)
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updates = self._update_attr(
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segment, updates,
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'nsds5replicatedattributelisttotal',
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replication.TOTAL_EXCLUDES, template=EXCLUDE_TEMPLATE)
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updates = self._update_attr(
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segment, updates,
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'nsds5replicastripattrs', replication.STRIP_ATTRS)
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if updates:
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try:
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self.api.Command.topologysegment_mod(
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suffix_name, segment['cn'][0],
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**updates)
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except errors.EmptyModlist:
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# No update done
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logger.debug("No update required for the segment %s",
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segment['cn'][0])
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logger.debug("Done updating agreements")
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return False, [] # No restart, no updates
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def _update_attr(self, segment, updates, attribute, values, template='%s'):
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"""Add or update an attribute of a replication agreement
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If the attribute doesn't already exist, it is added and set to
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`template` with %s substituted by a space-separated `values`.
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If the attribute does exist, `values` missing from it are just
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appended to the end, also space-separated.
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:param: updates: dict containing the updates
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:param segment: dict containing segment information
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:param attribute: Attribute to add or update
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:param values: List of values the attribute should hold
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:param template: Template to use when adding attribute
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"""
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attrlist = segment.get(attribute)
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if attrlist is None:
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logger.debug("Adding %s", attribute)
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# Need to add it altogether
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updates[attribute] = template % " ".join(values)
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else:
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attrlist_normalized = attrlist[0].lower().split()
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missing = [a for a in values
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if a.lower() not in attrlist_normalized]
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if missing:
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logger.debug("%s needs updating (missing: %s)", attribute,
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', '.join(missing))
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updates[attribute] = '%s %s' % (attrlist[0], ' '.join(missing))
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else:
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logger.debug("%s: No update necessary", attribute)
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return updates
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