vmware-nsx/vmware_nsx/dhcp_meta/lsnmanager.py
Gary Kotton 6228a06399 Drop log translations
Log messages are no longer being translated. This removes all use of
the _LE, _LI, and _LW translation markers to simplify logging and to
avoid confusion with new contributions.

See:
http://lists.openstack.org/pipermail/openstack-i18n/2016-November/002574.html
http://lists.openstack.org/pipermail/openstack-dev/2017-March/113365.html

Change-Id: I9d37ae28a3fecbe910e60dc7f22e229a7b65940c
2017-03-26 05:09:02 -07:00

480 lines
21 KiB
Python

# Copyright 2014 VMware, Inc.
#
# All Rights Reserved
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
from neutron_lib import exceptions as n_exc
from oslo_config import cfg
from oslo_db import exception as db_exc
from oslo_log import log as logging
from oslo_utils import excutils
from vmware_nsx._i18n import _
from vmware_nsx.api_client import exception as api_exc
from vmware_nsx.common import exceptions as p_exc
from vmware_nsx.common import nsx_utils
from vmware_nsx.db import lsn_db
from vmware_nsx.dhcp_meta import constants as const
from vmware_nsx.nsxlib.mh import lsn as lsn_api
from vmware_nsx.nsxlib.mh import switch as switch_api
LOG = logging.getLogger(__name__)
META_CONF = 'metadata-proxy'
DHCP_CONF = 'dhcp'
lsn_opts = [
cfg.BoolOpt('sync_on_missing_data', default=False,
help=_('Pull LSN information from NSX in case it is missing '
'from the local data store. This is useful to rebuild '
'the local store in case of server recovery.'))
]
def register_lsn_opts(config):
config.CONF.register_opts(lsn_opts, "NSX_LSN")
class LsnManager(object):
"""Manage LSN entities associated with networks."""
def __init__(self, plugin):
self.plugin = plugin
@property
def cluster(self):
return self.plugin.cluster
def lsn_exists(self, context, network_id):
"""Return True if a Logical Service Node exists for the network."""
return self.lsn_get(
context, network_id, raise_on_err=False) is not None
def lsn_get(self, context, network_id, raise_on_err=True):
"""Retrieve the LSN id associated to the network."""
try:
return lsn_api.lsn_for_network_get(self.cluster, network_id)
except (n_exc.NotFound, api_exc.NsxApiException):
if raise_on_err:
LOG.error('Unable to find Logical Service Node for '
'network %s.',
network_id)
raise p_exc.LsnNotFound(entity='network',
entity_id=network_id)
else:
LOG.warning('Unable to find Logical Service Node for '
'the requested network %s.',
network_id)
def lsn_create(self, context, network_id):
"""Create a LSN associated to the network."""
try:
return lsn_api.lsn_for_network_create(self.cluster, network_id)
except api_exc.NsxApiException:
err_msg = _('Unable to create LSN for network %s') % network_id
raise p_exc.NsxPluginException(err_msg=err_msg)
def lsn_delete(self, context, lsn_id):
"""Delete a LSN given its id."""
try:
lsn_api.lsn_delete(self.cluster, lsn_id)
except (n_exc.NotFound, api_exc.NsxApiException):
LOG.warning('Unable to delete Logical Service Node %s',
lsn_id)
def lsn_delete_by_network(self, context, network_id):
"""Delete a LSN associated to the network."""
lsn_id = self.lsn_get(context, network_id, raise_on_err=False)
if lsn_id:
self.lsn_delete(context, lsn_id)
def lsn_port_get(self, context, network_id, subnet_id, raise_on_err=True):
"""Retrieve LSN and LSN port for the network and the subnet."""
lsn_id = self.lsn_get(context, network_id, raise_on_err=raise_on_err)
if lsn_id:
try:
lsn_port_id = lsn_api.lsn_port_by_subnet_get(
self.cluster, lsn_id, subnet_id)
except (n_exc.NotFound, api_exc.NsxApiException):
if raise_on_err:
LOG.error('Unable to find Logical Service Node Port '
'for LSN %(lsn_id)s and subnet '
'%(subnet_id)s',
{'lsn_id': lsn_id, 'subnet_id': subnet_id})
raise p_exc.LsnPortNotFound(lsn_id=lsn_id,
entity='subnet',
entity_id=subnet_id)
else:
LOG.warning('Unable to find Logical Service Node Port '
'for LSN %(lsn_id)s and subnet '
'%(subnet_id)s',
{'lsn_id': lsn_id, 'subnet_id': subnet_id})
return (lsn_id, None)
else:
return (lsn_id, lsn_port_id)
else:
return (None, None)
def lsn_port_get_by_mac(self, context, network_id, mac, raise_on_err=True):
"""Retrieve LSN and LSN port given network and mac address."""
lsn_id = self.lsn_get(context, network_id, raise_on_err=raise_on_err)
if lsn_id:
try:
lsn_port_id = lsn_api.lsn_port_by_mac_get(
self.cluster, lsn_id, mac)
except (n_exc.NotFound, api_exc.NsxApiException):
if raise_on_err:
LOG.error('Unable to find Logical Service Node Port '
'for LSN %(lsn_id)s and mac address '
'%(mac)s',
{'lsn_id': lsn_id, 'mac': mac})
raise p_exc.LsnPortNotFound(lsn_id=lsn_id,
entity='MAC',
entity_id=mac)
else:
LOG.warning('Unable to find Logical Service Node '
'Port for LSN %(lsn_id)s and mac address '
'%(mac)s',
{'lsn_id': lsn_id, 'mac': mac})
return (lsn_id, None)
else:
return (lsn_id, lsn_port_id)
else:
return (None, None)
def lsn_port_create(self, context, lsn_id, subnet_info):
"""Create and return LSN port for associated subnet."""
try:
return lsn_api.lsn_port_create(self.cluster, lsn_id, subnet_info)
except n_exc.NotFound:
raise p_exc.LsnNotFound(entity='', entity_id=lsn_id)
except api_exc.NsxApiException:
err_msg = _('Unable to create port for LSN %s') % lsn_id
raise p_exc.NsxPluginException(err_msg=err_msg)
def lsn_port_delete(self, context, lsn_id, lsn_port_id):
"""Delete a LSN port from the Logical Service Node."""
try:
lsn_api.lsn_port_delete(self.cluster, lsn_id, lsn_port_id)
except (n_exc.NotFound, api_exc.NsxApiException):
LOG.warning('Unable to delete LSN Port %s', lsn_port_id)
def lsn_port_dispose(self, context, network_id, mac_address):
"""Delete a LSN port given the network and the mac address."""
lsn_id, lsn_port_id = self.lsn_port_get_by_mac(
context, network_id, mac_address, raise_on_err=False)
if lsn_port_id:
self.lsn_port_delete(context, lsn_id, lsn_port_id)
if mac_address == const.METADATA_MAC:
try:
lswitch_port_id = switch_api.get_port_by_neutron_tag(
self.cluster, network_id,
const.METADATA_PORT_ID)['uuid']
switch_api.delete_port(
self.cluster, network_id, lswitch_port_id)
except (n_exc.PortNotFoundOnNetwork,
api_exc.NsxApiException):
LOG.warning("Metadata port not found while attempting "
"to delete it from network %s",
network_id)
else:
LOG.warning("Unable to find Logical Services Node "
"Port with MAC %s", mac_address)
def lsn_port_dhcp_setup(
self, context, network_id, port_id, port_data, subnet_config=None):
"""Connect network to LSN via specified port and port_data."""
try:
lsn_id = None
switch_id = nsx_utils.get_nsx_switch_ids(
context.session, self.cluster, network_id)[0]
lswitch_port_id = switch_api.get_port_by_neutron_tag(
self.cluster, switch_id, port_id)['uuid']
lsn_id = self.lsn_get(context, network_id)
lsn_port_id = self.lsn_port_create(context, lsn_id, port_data)
except (n_exc.NotFound, p_exc.NsxPluginException):
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=port_id)
else:
try:
lsn_api.lsn_port_plug_network(
self.cluster, lsn_id, lsn_port_id, lswitch_port_id)
except p_exc.LsnConfigurationConflict:
self.lsn_port_delete(context, lsn_id, lsn_port_id)
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=port_id)
if subnet_config:
self.lsn_port_dhcp_configure(
context, lsn_id, lsn_port_id, subnet_config)
else:
return (lsn_id, lsn_port_id)
def lsn_port_metadata_setup(self, context, lsn_id, subnet):
"""Connect subnet to specified LSN."""
data = {
"mac_address": const.METADATA_MAC,
"ip_address": subnet['cidr'],
"subnet_id": subnet['id']
}
network_id = subnet['network_id']
tenant_id = subnet['tenant_id']
lswitch_port_id = None
try:
switch_id = nsx_utils.get_nsx_switch_ids(
context.session, self.cluster, network_id)[0]
lswitch_port_id = switch_api.create_lport(
self.cluster, switch_id, tenant_id,
const.METADATA_PORT_ID, const.METADATA_PORT_NAME,
const.METADATA_DEVICE_ID, True)['uuid']
lsn_port_id = self.lsn_port_create(context, lsn_id, data)
except (n_exc.NotFound, p_exc.NsxPluginException,
api_exc.NsxApiException):
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=lswitch_port_id)
else:
try:
lsn_api.lsn_port_plug_network(
self.cluster, lsn_id, lsn_port_id, lswitch_port_id)
except p_exc.LsnConfigurationConflict:
self.lsn_port_delete(self.cluster, lsn_id, lsn_port_id)
switch_api.delete_port(
self.cluster, network_id, lswitch_port_id)
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=lsn_port_id)
def lsn_port_dhcp_configure(self, context, lsn_id, lsn_port_id, subnet):
"""Enable/disable dhcp services with the given config options."""
is_enabled = subnet["enable_dhcp"]
dhcp_options = {
"domain_name": cfg.CONF.NSX_DHCP.domain_name,
"default_lease_time": cfg.CONF.NSX_DHCP.default_lease_time,
}
dns_servers = cfg.CONF.NSX_DHCP.extra_domain_name_servers or []
dns_servers.extend(subnet["dns_nameservers"])
if subnet['gateway_ip']:
dhcp_options["routers"] = subnet["gateway_ip"]
if dns_servers:
dhcp_options["domain_name_servers"] = ",".join(dns_servers)
if subnet["host_routes"]:
dhcp_options["classless_static_routes"] = (
",".join(subnet["host_routes"])
)
try:
lsn_api.lsn_port_dhcp_configure(
self.cluster, lsn_id, lsn_port_id, is_enabled, dhcp_options)
except (n_exc.NotFound, api_exc.NsxApiException):
err_msg = (_('Unable to configure dhcp for Logical Service '
'Node %(lsn_id)s and port %(lsn_port_id)s')
% {'lsn_id': lsn_id, 'lsn_port_id': lsn_port_id})
LOG.error(err_msg)
raise p_exc.NsxPluginException(err_msg=err_msg)
def lsn_metadata_configure(self, context, subnet_id, is_enabled):
"""Configure metadata service for the specified subnet."""
subnet = self.plugin.get_subnet(context, subnet_id)
network_id = subnet['network_id']
meta_conf = cfg.CONF.NSX_METADATA
metadata_options = {
'metadata_server_ip': meta_conf.metadata_server_address,
'metadata_server_port': meta_conf.metadata_server_port,
'metadata_proxy_shared_secret': meta_conf.metadata_shared_secret
}
try:
lsn_id = self.lsn_get(context, network_id)
lsn_api.lsn_metadata_configure(
self.cluster, lsn_id, is_enabled, metadata_options)
except (p_exc.LsnNotFound, api_exc.NsxApiException):
err_msg = (_('Unable to configure metadata '
'for subnet %s') % subnet_id)
LOG.error(err_msg)
raise p_exc.NsxPluginException(err_msg=err_msg)
if is_enabled:
try:
# test that the lsn port exists
self.lsn_port_get(context, network_id, subnet_id)
except p_exc.LsnPortNotFound:
# this might happen if subnet had dhcp off when created
# so create one, and wire it
self.lsn_port_metadata_setup(context, lsn_id, subnet)
else:
self.lsn_port_dispose(context, network_id, const.METADATA_MAC)
def _lsn_port_host_conf(self, context, network_id, subnet_id, data, hdlr):
lsn_id, lsn_port_id = self.lsn_port_get(
context, network_id, subnet_id, raise_on_err=False)
try:
if lsn_id and lsn_port_id:
hdlr(self.cluster, lsn_id, lsn_port_id, data)
except (n_exc.NotFound, api_exc.NsxApiException):
LOG.error('Error while configuring LSN '
'port %s', lsn_port_id)
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=lsn_port_id)
def lsn_port_dhcp_host_add(self, context, network_id, subnet_id, host):
"""Add dhcp host entry to LSN port configuration."""
self._lsn_port_host_conf(context, network_id, subnet_id, host,
lsn_api.lsn_port_dhcp_host_add)
def lsn_port_dhcp_host_remove(self, context, network_id, subnet_id, host):
"""Remove dhcp host entry from LSN port configuration."""
self._lsn_port_host_conf(context, network_id, subnet_id, host,
lsn_api.lsn_port_dhcp_host_remove)
def lsn_port_meta_host_add(self, context, network_id, subnet_id, host):
"""Add dhcp host entry to LSN port configuration."""
self._lsn_port_host_conf(context, network_id, subnet_id, host,
lsn_api.lsn_port_metadata_host_add)
def lsn_port_meta_host_remove(self, context, network_id, subnet_id, host):
"""Remove dhcp host entry from LSN port configuration."""
self._lsn_port_host_conf(context, network_id, subnet_id, host,
lsn_api.lsn_port_metadata_host_remove)
def lsn_port_update(
self, context, network_id, subnet_id, dhcp=None, meta=None):
"""Update the specified configuration for the LSN port."""
if not dhcp and not meta:
return
try:
lsn_id, lsn_port_id = self.lsn_port_get(
context, network_id, subnet_id, raise_on_err=False)
if dhcp and lsn_id and lsn_port_id:
lsn_api.lsn_port_host_entries_update(
self.cluster, lsn_id, lsn_port_id, DHCP_CONF, dhcp)
if meta and lsn_id and lsn_port_id:
lsn_api.lsn_port_host_entries_update(
self.cluster, lsn_id, lsn_port_id, META_CONF, meta)
except api_exc.NsxApiException:
raise p_exc.PortConfigurationError(
net_id=network_id, lsn_id=lsn_id, port_id=lsn_port_id)
class PersistentLsnManager(LsnManager):
"""Add local persistent state to LSN Manager."""
def __init__(self, plugin):
super(PersistentLsnManager, self).__init__(plugin)
self.sync_on_missing = cfg.CONF.NSX_LSN.sync_on_missing_data
def lsn_get(self, context, network_id, raise_on_err=True):
try:
obj = lsn_db.lsn_get_for_network(
context, network_id, raise_on_err=raise_on_err)
return obj.lsn_id if obj else None
except p_exc.LsnNotFound:
with excutils.save_and_reraise_exception() as ctxt:
ctxt.reraise = False
if self.sync_on_missing:
lsn_id = super(PersistentLsnManager, self).lsn_get(
context, network_id, raise_on_err=raise_on_err)
self.lsn_save(context, network_id, lsn_id)
return lsn_id
if raise_on_err:
ctxt.reraise = True
def lsn_save(self, context, network_id, lsn_id):
"""Save LSN-Network mapping to the DB."""
try:
lsn_db.lsn_add(context, network_id, lsn_id)
except db_exc.DBError:
err_msg = _('Unable to save LSN for network %s') % network_id
LOG.exception(err_msg)
raise p_exc.NsxPluginException(err_msg=err_msg)
def lsn_create(self, context, network_id):
lsn_id = super(PersistentLsnManager,
self).lsn_create(context, network_id)
try:
self.lsn_save(context, network_id, lsn_id)
except p_exc.NsxPluginException:
with excutils.save_and_reraise_exception():
super(PersistentLsnManager, self).lsn_delete(context, lsn_id)
return lsn_id
def lsn_delete(self, context, lsn_id):
lsn_db.lsn_remove(context, lsn_id)
super(PersistentLsnManager, self).lsn_delete(context, lsn_id)
def lsn_port_get(self, context, network_id, subnet_id, raise_on_err=True):
try:
obj = lsn_db.lsn_port_get_for_subnet(
context, subnet_id, raise_on_err=raise_on_err)
return (obj.lsn_id, obj.lsn_port_id) if obj else (None, None)
except p_exc.LsnPortNotFound:
with excutils.save_and_reraise_exception() as ctxt:
ctxt.reraise = False
if self.sync_on_missing:
lsn_id, lsn_port_id = (
super(PersistentLsnManager, self).lsn_port_get(
context, network_id, subnet_id,
raise_on_err=raise_on_err))
mac_addr = lsn_api.lsn_port_info_get(
self.cluster, lsn_id, lsn_port_id)['mac_address']
self.lsn_port_save(
context, lsn_port_id, subnet_id, mac_addr, lsn_id)
return (lsn_id, lsn_port_id)
if raise_on_err:
ctxt.reraise = True
def lsn_port_get_by_mac(self, context, network_id, mac, raise_on_err=True):
try:
obj = lsn_db.lsn_port_get_for_mac(
context, mac, raise_on_err=raise_on_err)
return (obj.lsn_id, obj.lsn_port_id) if obj else (None, None)
except p_exc.LsnPortNotFound:
with excutils.save_and_reraise_exception() as ctxt:
ctxt.reraise = False
if self.sync_on_missing:
lsn_id, lsn_port_id = (
super(PersistentLsnManager, self).lsn_port_get_by_mac(
context, network_id, mac,
raise_on_err=raise_on_err))
subnet_id = lsn_api.lsn_port_info_get(
self.cluster, lsn_id, lsn_port_id).get('subnet_id')
self.lsn_port_save(
context, lsn_port_id, subnet_id, mac, lsn_id)
return (lsn_id, lsn_port_id)
if raise_on_err:
ctxt.reraise = True
def lsn_port_save(self, context, lsn_port_id, subnet_id, mac_addr, lsn_id):
"""Save LSN Port information to the DB."""
try:
lsn_db.lsn_port_add_for_lsn(
context, lsn_port_id, subnet_id, mac_addr, lsn_id)
except db_exc.DBError:
err_msg = _('Unable to save LSN port for subnet %s') % subnet_id
LOG.exception(err_msg)
raise p_exc.NsxPluginException(err_msg=err_msg)
def lsn_port_create(self, context, lsn_id, subnet_info):
lsn_port_id = super(PersistentLsnManager,
self).lsn_port_create(context, lsn_id, subnet_info)
try:
self.lsn_port_save(context, lsn_port_id, subnet_info['subnet_id'],
subnet_info['mac_address'], lsn_id)
except p_exc.NsxPluginException:
with excutils.save_and_reraise_exception():
super(PersistentLsnManager, self).lsn_port_delete(
context, lsn_id, lsn_port_id)
return lsn_port_id
def lsn_port_delete(self, context, lsn_id, lsn_port_id):
lsn_db.lsn_port_remove(context, lsn_port_id)
super(PersistentLsnManager, self).lsn_port_delete(
context, lsn_id, lsn_port_id)