def PostProcess(self, data_map, source, search_filter, search_scope):
"""Perform some post-process of the data."""
if 'uniqueMember' in self.attrs:
for gr in data_map:
uidmembers = []
for member in gr.members:
source.Search(search_base=member,
search_filter='(objectClass=*)',
search_scope=ldap.SCOPE_BASE,
attrs=['uid'])
for obj in source:
if 'uid' in obj:
uidmembers.extend(obj['uid'])
del gr.members[:]
gr.members.extend(uidmembers)
_group_map = {i.name: i for i in data_map}
def _expand_members(obj, visited=None):
"""Expand all subgroups recursively."""
for member_name in obj.groupmembers:
if member_name in _group_map and member_name not in visited:
gmember = _group_map[member_name]
for member in gmember.members:
if member not in obj.members:
obj.members.append(member)
for submember_name in gmember.groupmembers:
if submember_name in _group_map and submember_name not in visited:
visited.append(submember_name)
_expand_members(_group_map[submember_name], visited)
if self.conf.get("nested_groups"):
self.log.info("Expanding nested groups")
for gr in data_map:
_expand_members(gr, [gr.name])
def PostProcess(self, data_map, source, search_filter, search_scope):
"""Perform some post-process of the data."""
if 'uniqueMember' in self.attrs:
for gr in data_map:
uidmembers=[]
for member in gr.members:
source.Search(search_base=member,
search_filter='(objectClass=*)',
search_scope=ldap.SCOPE_BASE,
attrs=['uid'])
for obj in source:
if 'uid' in obj:
uidmembers.extend(obj['uid'])
del gr.members[:]
gr.members.extend(uidmembers)
def GetUpdates(self, source, search_base, search_filter, search_scope,
since):
"""Get updates from a source.
Args:
source: a data source
search_base: the LDAP base of the tree
search_filter: the LDAP object filter
search_scope: the LDAP scope filter, one of 'base', 'one', or 'sub'.
since: a timestamp to get updates since (None for 'get everything')
Returns:
a tuple containing the map of updates and a maximum timestamp
Raises:
error.ConfigurationError: scope is invalid
ValueError: an object in the source map is malformed
"""
if self.conf.get('ad'):
# AD attribute for modifyTimestamp is whenChanged
self.attrs.append('whenChanged')
else:
self.attrs.append('modifyTimestamp')
if since is not None:
ts = self.FromTimestampToLdap(since)
# since openldap disallows modifyTimestamp "greater than" we have to
# increment by one second.
if self.conf.get('ad'):
ts = int(ts.rstrip('.0Z')) + 1
ts = '%s.0Z' % ts
search_filter = ('(&%s(whenChanged>=%s))' % (search_filter, ts))
else:
ts = int(ts.rstrip('Z')) + 1
ts = '%sZ' % ts
search_filter = ('(&%s(modifyTimestamp>=%s))' %
(search_filter, ts))
if search_scope == 'base':
search_scope = ldap.SCOPE_BASE
elif search_scope in ['one', 'onelevel']:
search_scope = ldap.SCOPE_ONELEVEL
elif search_scope in ['sub', 'subtree']:
search_scope = ldap.SCOPE_SUBTREE
else:
raise error.ConfigurationError('Invalid scope: %s' % search_scope)
source.Search(search_base=search_base,
search_filter=search_filter,
search_scope=search_scope,
attrs=self.attrs)
# Don't initialize with since, because we really want to get the
# latest timestamp read, and if somehow a larger 'since' slips through
# the checks in main(), we'd better catch it here.
max_ts = None
data_map = self.CreateMap()
for obj in source:
for field in self.essential_fields:
if field not in obj:
logging.warn('invalid object passed: %r not in %r', field,
obj)
raise ValueError('Invalid object passed: %r', obj)
if self.conf.get('ad'):
obj_ts = self.FromLdapToTimestamp(obj['whenChanged'][0])
else:
try:
obj_ts = self.FromLdapToTimestamp(obj['modifyTimestamp'][0])
except KeyError:
obj_ts = self.FromLdapToTimestamp(obj['modifyTimeStamp'][0])
if max_ts is None or obj_ts > max_ts:
max_ts = obj_ts
try:
if not data_map.Add(self.Transform(obj)):
logging.info('could not add obj: %r', obj)
except AttributeError as e:
logging.warning('error %r, discarding malformed obj: %r',
str(e), obj)
# Perform some post processing on the data_map.
self.PostProcess(data_map, source, search_filter, search_scope)
data_map.SetModifyTimestamp(max_ts)
return data_map
