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# Authors:
# Rob Crittenden <rcritten@redhat.com>
#
# Copyright (C) 2012 Red Hat
# see file 'COPYING' for use and warranty information
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import pwd
from ipapython import ipaldap
from ipaserver.install import replication
from ipalib import api
from ipalib import Updater
EXCLUDE_TEMPLATE = '(objectclass=*) $ EXCLUDE %s'
class update_replica_attribute_lists(Updater):
"""
Run through all replication agreements and ensure that EXCLUDE list
has all the required attributes so that we don't cause replication
storms.
"""
def execute(self, **options):
# We need an IPAdmin connection to the backend
self.log.debug("Start replication agreement exclude list update task")
conn = self.api.Backend.ldap2
repl = replication.ReplicationManager(self.api.env.realm,
self.api.env.host,
None, conn=conn)
# We need to update only IPA replica agreements, not winsync
ipa_replicas = repl.find_ipa_replication_agreements()
self.log.debug("Found %d agreement(s)", len(ipa_replicas))
for replica in ipa_replicas:
self.log.debug(replica.single_value.get('description'))
self._update_attr(repl, replica,
'nsDS5ReplicatedAttributeList',
replication.EXCLUDES, template=EXCLUDE_TEMPLATE)
self._update_attr(repl, replica,
'nsDS5ReplicatedAttributeListTotal',
replication.TOTAL_EXCLUDES, template=EXCLUDE_TEMPLATE)
self._update_attr(repl, replica,
'nsds5ReplicaStripAttrs', replication.STRIP_ATTRS)
self.log.debug("Done updating agreements")
return False, [] # No restart, no updates
def _update_attr(self, repl, replica, attribute, values, template='%s'):
"""Add or update an attribute of a replication agreement
If the attribute doesn't already exist, it is added and set to
`template` with %s substituted by a space-separated `values`.
If the attribute does exist, `values` missing from it are just
appended to the end, also space-separated.
:param repl: Replication manager
:param replica: Replica agreement
:param attribute: Attribute to add or update
:param values: List of values the attribute should hold
:param template: Template to use when adding attribute
"""
attrlist = replica.single_value.get(attribute)
if attrlist is None:
self.log.debug("Adding %s", attribute)
# Need to add it altogether
replica[attribute] = [template % " ".join(values)]
try:
repl.conn.update_entry(replica)
self.log.debug("Updated")
except Exception, e:
self.log.error("Error caught updating replica: %s", str(e))
else:
attrlist_normalized = attrlist.lower().split()
missing = [a for a in values
if a.lower() not in attrlist_normalized]
if missing:
self.log.debug("%s needs updating (missing: %s)", attribute,
', '.join(missing))
replica[attribute] = [
'%s %s' % (attrlist, ' '.join(missing))]
try:
repl.conn.update_entry(replica)
self.log.debug("Updated %s", attribute)
except Exception, e:
self.log.error("Error caught updating %s: %s",
attribute, str(e))
else:
self.log.debug("%s: No update necessary" % attribute)
api.register(update_replica_attribute_lists)
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