def sync_from_callback(self, operation, object_type, res_id,
resource_dict):
try:
if operation == odl_const.ODL_DELETE:
self.out_of_sync |= not self.client.try_delete(object_type +
'/' + res_id)
else:
if operation == odl_const.ODL_CREATE:
urlpath = object_type
method = 'post'
elif operation == odl_const.ODL_UPDATE:
urlpath = object_type + '/' + res_id
method = 'put'
self.client.sendjson(method, urlpath, resource_dict)
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Unable to perform %(operation)s on "
"%(object_type)s %(res_id)s %(resource_dict)s"), {
'operation': operation,
'object_type': object_type,
'res_id': res_id,
'resource_dict': resource_dict
})
self.out_of_sync = True
def _create_parsers(self):
for parser_name in self.network_topology_parsers:
try:
yield NetworkTopologyParser.create_parser(parser_name)
except Exception:
LOG.exception(
_LE('Error initializing topology parser: %(parser_name)r'),
{'parser_name': parser_name})
def _create_parsers(self):
for parser_name in self.network_topology_parsers:
try:
yield NetworkTopologyParser.create_parser(parser_name)
except Exception:
LOG.exception(
_LE('Error initializing topology parser: %(parser_name)r'),
{'parser_name': parser_name})
def _fetch_elements_by_host(self, host_name, cache_timeout=60.0):
'''Yields all network topology elements referring to given host name
'''
host_addresses = [host_name]
try:
# It uses both compute host name and known IP addresses to
# recognize topology elements valid for given computed host
ip_addresses = utils.get_addresses_by_name(host_name)
except Exception:
ip_addresses = []
LOG.exception(
_LE('Unable to resolve IP addresses for host %(host_name)r'),
{'host_name': host_name})
else:
host_addresses.extend(ip_addresses)
yield_elements = set()
try:
for _, element in self._elements_by_ip.fetch_all(
host_addresses, cache_timeout):
# yields every element only once
if element not in yield_elements:
yield_elements.add(element)
yield element
except cache.CacheFetchError as error:
# This error is expected on most of the cases because typically not
# all host_addresses maps to a network topology element.
if yield_elements:
# As we need only one element for every host we ignore the
# case in which others host addresseses didn't map to any host
LOG.debug(
'Host addresses not found in networking topology: %s',
', '.join(error.missing_keys))
else:
LOG.exception(
_LE('No such network topology elements for given host '
'%(host_name)r and given IPs: %(ip_addresses)s.'), {
'host_name': host_name,
'ip_addresses': ", ".join(ip_addresses)
})
error.reraise_cause()
def _fetch_elements_by_host(self, host_name, cache_timeout=60.0):
'''Yields all network topology elements referring to given host name
'''
host_addresses = [host_name]
try:
# It uses both compute host name and known IP addresses to
# recognize topology elements valid for given computed host
ip_addresses = utils.get_addresses_by_name(host_name)
except Exception:
ip_addresses = []
LOG.exception(
_LE('Unable to resolve IP addresses for host %(host_name)r'),
{'host_name': host_name})
else:
host_addresses.extend(ip_addresses)
yield_elements = set()
try:
for _, element in self._elements_by_ip.fetch_all(
host_addresses, cache_timeout):
# yields every element only once
if element not in yield_elements:
yield_elements.add(element)
yield element
except cache.CacheFetchError as error:
# This error is expected on most of the cases because typically not
# all host_addresses maps to a network topology element.
if yield_elements:
# As we need only one element for every host we ignore the
# case in which others host addresseses didn't map to any host
LOG.debug(
'Host addresses not found in networking topology: %s',
', '.join(error.missing_keys))
else:
LOG.exception(
_LE('No such network topology elements for given host '
'%(host_name)r and given IPs: %(ip_addresses)s.'),
{'host_name': host_name,
'ip_addresses': ", ".join(ip_addresses)})
error.reraise_cause()
def _fetch_and_parse_network_topology(self, addresses):
# The cache calls this method to fecth new elements when at least one
# of the addresses is not in the cache or it has expired.
# pylint: disable=unused-argument
LOG.info(_LI('Fetch network topology from ODL.'))
response = self._client.get()
response.raise_for_status()
network_topology = response.json()
if LOG.isEnabledFor(logging.DEBUG):
topology_str = jsonutils.dumps(network_topology,
sort_keys=True,
indent=4,
separators=(',', ': '))
LOG.debug("Got network topology:\n%s", topology_str)
at_least_one_element_for_asked_addresses = False
for parser in self._parsers:
try:
for element in parser.parse_network_topology(network_topology):
if not isinstance(element, NetworkTopologyElement):
raise TypeError(
"Yield element doesn't implement interface "
"'NetworkTopologyElement': {!r}".format(element))
# the same element can be known by more host addresses
for host_address in element.host_addresses:
if host_address in addresses:
at_least_one_element_for_asked_addresses = True
yield host_address, element
except Exception:
LOG.exception(
_LE("Parser %(parser)r failed to parse network topology."),
{'parser': parser})
if not at_least_one_element_for_asked_addresses:
# this will mark entries for given addresses as failed to allow
# calling this method again as soon it is requested and avoid
# waiting for cache expiration
raise ValueError(
'No such topology element for given host addresses: {}'.format(
', '.join(addresses)))
def _fetch_and_parse_network_topology(self, addresses):
# The cache calls this method to fecth new elements when at least one
# of the addresses is not in the cache or it has expired.
# pylint: disable=unused-argument
LOG.info(_LI('Fetch network topology from ODL.'))
response = self._client.get()
response.raise_for_status()
network_topology = response.json()
if LOG.isEnabledFor(logging.DEBUG):
topology_str = jsonutils.dumps(
network_topology, sort_keys=True, indent=4,
separators=(',', ': '))
LOG.debug("Got network topology:\n%s", topology_str)
at_least_one_element_for_asked_addresses = False
for parser in self._parsers:
try:
for element in parser.parse_network_topology(network_topology):
if not isinstance(element, NetworkTopologyElement):
raise TypeError(
"Yield element doesn't implement interface "
"'NetworkTopologyElement': {!r}".format(element))
# the same element can be known by more host addresses
for host_address in element.host_addresses:
if host_address in addresses:
at_least_one_element_for_asked_addresses = True
yield host_address, element
except Exception:
LOG.exception(
_LE("Parser %(parser)r failed to parse network topology."),
{'parser': parser})
if not at_least_one_element_for_asked_addresses:
# this will mark entries for given addresses as failed to allow
# calling this method again as soon it is requested and avoid
# waiting for cache expiration
raise ValueError(
'No such topology element for given host addresses: {}'.format(
', '.join(addresses)))
def sync_single_resource(self, operation, object_type, context):
"""Sync over a single resource from Neutron to OpenDaylight.
Handle syncing a single operation over to OpenDaylight, and correctly
filter attributes out which are not required for the requisite
operation (create or update) being handled.
"""
# Convert underscores to dashes in the URL for ODL
object_type_url = object_type.replace('_', '-')
try:
obj_id = context.current['id']
if operation == odl_const.ODL_DELETE:
self.out_of_sync |= not self.client.try_delete(
object_type_url + '/' + obj_id)
else:
filter_cls = self.FILTER_MAP[object_type]
if operation == odl_const.ODL_CREATE:
urlpath = object_type_url
method = 'post'
attr_filter = filter_cls.filter_create_attributes
elif operation == odl_const.ODL_UPDATE:
urlpath = object_type_url + '/' + obj_id
method = 'put'
attr_filter = filter_cls.filter_update_attributes
resource = copy.deepcopy(context.current)
attr_filter(resource, context)
self.client.sendjson(method, urlpath,
{object_type_url[:-1]: resource})
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_LE("Unable to perform %(operation)s on "
"%(object_type)s %(object_id)s"), {
'operation': operation,
'object_type': object_type,
'object_id': obj_id
})
self.out_of_sync = True
def sync_from_callback(self, operation, object_type, res_id,
resource_dict):
try:
if operation == odl_const.ODL_DELETE:
self.out_of_sync |= not self.client.try_delete(
object_type + '/' + res_id)
else:
if operation == odl_const.ODL_CREATE:
urlpath = object_type
method = 'post'
elif operation == odl_const.ODL_UPDATE:
urlpath = object_type + '/' + res_id
method = 'put'
self.client.sendjson(method, urlpath, resource_dict)
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Unable to perform %(operation)s on "
"%(object_type)s %(res_id)s %(resource_dict)s"),
{'operation': operation,
'object_type': object_type,
'res_id': res_id,
'resource_dict': resource_dict})
self.out_of_sync = True
def sync_single_resource(self, operation, object_type, context):
"""Sync over a single resource from Neutron to OpenDaylight.
Handle syncing a single operation over to OpenDaylight, and correctly
filter attributes out which are not required for the requisite
operation (create or update) being handled.
"""
# Convert underscores to dashes in the URL for ODL
object_type_url = object_type.replace('_', '-')
try:
obj_id = context.current['id']
if operation == odl_const.ODL_DELETE:
self.out_of_sync |= not self.client.try_delete(
object_type_url + '/' + obj_id)
else:
filter_cls = self.FILTER_MAP[object_type]
if operation == odl_const.ODL_CREATE:
urlpath = object_type_url
method = 'post'
attr_filter = filter_cls.filter_create_attributes
elif operation == odl_const.ODL_UPDATE:
urlpath = object_type_url + '/' + obj_id
method = 'put'
attr_filter = filter_cls.filter_update_attributes
resource = copy.deepcopy(context.current)
attr_filter(resource, context)
self.client.sendjson(method, urlpath,
{object_type_url[:-1]: resource})
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(_LE("Unable to perform %(operation)s on "
"%(object_type)s %(object_id)s"),
{'operation': operation,
'object_type': object_type,
'object_id': obj_id})
self.out_of_sync = True
def bind_port(self, port_context):
"""Set binding for a valid segment
"""
host_name = port_context.host
elements = list()
try:
# Append to empty list to add as much elements as possible
# in the case it raises an exception
elements.extend(self._fetch_elements_by_host(host_name))
except Exception:
LOG.exception(
_LE('Error fetching elements for host %(host_name)r.'),
{'host_name': host_name},
exc_info=1)
if not elements:
# In case it wasn't able to find any network topology element
# for given host then it uses the legacy OVS one keeping the old
# behaviour
LOG.warning(
_LW('Using legacy OVS network topology element for port '
'binding for host: %(host_name)r.'),
{'host_name': host_name})
# Imported here to avoid cyclic module dependencies
from networking_odl.ml2 import ovsdb_topology
elements = [ovsdb_topology.OvsdbNetworkTopologyElement()]
# TODO(Federico Ressi): in the case there are more candidate virtual
# switches instances for the same host it choses one for binding
# port. As there isn't any know way to perform this selection it
# selects a VIF type that is valid for all switches that have
# been found and a VIF type valid for all them. This has to be improved
for vif_type in self.valid_vif_types:
vif_type_is_valid_for_all = True
for element in elements:
if vif_type not in element.valid_vif_types:
# it is invalid for at least one element: discard it
vif_type_is_valid_for_all = False
break
if vif_type_is_valid_for_all:
# This is the best VIF type valid for all elements
LOG.debug(
"Found VIF type %(vif_type)r valid for all network "
"topology elements for host %(host_name)r.", {
'vif_type': vif_type,
'host_name': host_name
})
for element in elements:
# It assumes that any element could be good for given host
# In most of the cases I expect exactely one element for
# every compute host
try:
return element.bind_port(port_context, vif_type,
self._vif_details)
except Exception:
LOG.exception(
_LE('Network topology element has failed binding '
'port:\n%(element)s'),
{'element': element.to_json()})
LOG.error(
_LE('Unable to bind port element for given host and valid VIF '
'types:\n'
'\thostname: %(host_name)s\n'
'\tvalid VIF types: %(valid_vif_types)s'), {
'host_name': host_name,
'valid_vif_types': ', '.join(self.valid_vif_types)
})
def sync_pending_row(self, exit_after_run=False):
# Block until all pending rows are processed
session = neutron_db_api.get_session()
while not self.event.is_set():
self.event.wait()
# Clear the event and go back to waiting after
# the sync block exits
self.event.clear()
while True:
LOG.debug("Thread walking database")
row = db.get_oldest_pending_db_row_with_lock(session)
if not row:
LOG.debug("No rows to sync")
break
# Validate the operation
validate_func = db.VALIDATION_MAP[row.object_type]
valid = validate_func(session, row.object_uuid,
row.operation, row.data)
if not valid:
LOG.info(_LI("%(operation)s %(type)s %(uuid)s is not a "
"valid operation yet, skipping for now"),
{'operation': row.operation,
'type': row.object_type,
'uuid': row.object_uuid})
# Set row back to pending.
db.update_db_row_pending(session, row)
if exit_after_run:
break
continue
LOG.info(_LI("Syncing %(operation)s %(type)s %(uuid)s"),
{'operation': row.operation, 'type': row.object_type,
'uuid': row.object_uuid})
# Add code to sync this to ODL
method, urlpath, to_send = self._json_data(row)
try:
self.client.sendjson(method, urlpath, to_send)
db.update_processing_db_row_passed(session, row)
except exceptions.ConnectionError as e:
# Don't raise the retry count, just log an error
LOG.error(_LE("Cannot connect to the Opendaylight "
"Controller"))
# Set row back to pending
db.update_db_row_pending(session, row)
# Break our of the loop and retry with the next
# timer interval
break
except Exception as e:
LOG.error(_LE("Error syncing %(type)s %(operation)s,"
" id %(uuid)s Error: %(error)s"),
{'type': row.object_type,
'uuid': row.object_uuid,
'operation': row.operation,
'error': e.message})
db.update_pending_db_row_retry(session, row,
self._row_retry_count)
LOG.debug("Clearing sync thread event")
if exit_after_run:
# Permanently waiting thread model breaks unit tests
# Adding this arg to exit here only for unit tests
break
def bind_port(self, port_context):
"""Set binding for a valid segment
"""
host_name = port_context.host
elements = list()
try:
# Append to empty list to add as much elements as possible
# in the case it raises an exception
elements.extend(self._fetch_elements_by_host(host_name))
except Exception:
LOG.exception(
_LE('Error fetching elements for host %(host_name)r.'),
{'host_name': host_name}, exc_info=1)
if not elements:
# In case it wasn't able to find any network topology element
# for given host then it uses the legacy OVS one keeping the old
# behaviour
LOG.warning(
_LW('Using legacy OVS network topology element for port '
'binding for host: %(host_name)r.'),
{'host_name': host_name})
# Imported here to avoid cyclic module dependencies
from networking_odl.ml2 import ovsdb_topology
elements = [ovsdb_topology.OvsdbNetworkTopologyElement()]
# TODO(Federico Ressi): in the case there are more candidate virtual
# switches instances for the same host it choses one for binding
# port. As there isn't any know way to perform this selection it
# selects a VIF type that is valid for all switches that have
# been found and a VIF type valid for all them. This has to be improved
for vif_type in self.valid_vif_types:
vif_type_is_valid_for_all = True
for element in elements:
if vif_type not in element.valid_vif_types:
# it is invalid for at least one element: discard it
vif_type_is_valid_for_all = False
break
if vif_type_is_valid_for_all:
# This is the best VIF type valid for all elements
LOG.debug(
"Found VIF type %(vif_type)r valid for all network "
"topology elements for host %(host_name)r.",
{'vif_type': vif_type, 'host_name': host_name})
for element in elements:
# It assumes that any element could be good for given host
# In most of the cases I expect exactely one element for
# every compute host
try:
return element.bind_port(
port_context, vif_type, self._vif_details)
except Exception:
LOG.exception(
_LE('Network topology element has failed binding '
'port:\n%(element)s'),
{'element': element.to_json()})
LOG.error(
_LE('Unable to bind port element for given host and valid VIF '
'types:\n'
'\thostname: %(host_name)s\n'
'\tvalid VIF types: %(valid_vif_types)s'),
{'host_name': host_name,
'valid_vif_types': ', '.join(self.valid_vif_types)})
