4e4ad8af0c
This is a l3-agent version of 349aa3ef35.
The combination of the plugin without agent extension support
and L3NATAgentWithStateReport results in an error:
"AttributeError: No such RPC function 'report_state'".
This patch changes l3_agent_manager to be L3NATAgent instead of
L3NATAgentWithStateReport since all plugins do not support
L3NATAgentWithStateReport and having this as the default breaks
all current deployments that upgrade source without changing
their config files.
Fixes bug 1139726
Change-Id: Ibb5c04c89bfad741ec43a372cbf97445f7b3d76c
749 lines
31 KiB
Python
749 lines
31 KiB
Python
"""
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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#
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# Copyright 2012 Nicira Networks, Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Dan Wendlandt, Nicira, Inc
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#
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"""
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import sys
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import eventlet
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from eventlet import semaphore
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import netaddr
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from oslo.config import cfg
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from quantum.agent.common import config
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from quantum.agent.linux import external_process
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from quantum.agent.linux import interface
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from quantum.agent.linux import ip_lib
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from quantum.agent.linux import iptables_manager
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from quantum.agent.linux import utils
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from quantum.agent import rpc as agent_rpc
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from quantum.common import constants as l3_constants
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from quantum.common import topics
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from quantum.common import utils as common_utils
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from quantum import context
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from quantum import manager
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from quantum.openstack.common import importutils
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from quantum.openstack.common import log as logging
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from quantum.openstack.common import loopingcall
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from quantum.openstack.common import periodic_task
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from quantum.openstack.common.rpc import common as rpc_common
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from quantum.openstack.common.rpc import proxy
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from quantum.openstack.common import service
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from quantum import service as quantum_service
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LOG = logging.getLogger(__name__)
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NS_PREFIX = 'qrouter-'
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INTERNAL_DEV_PREFIX = 'qr-'
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EXTERNAL_DEV_PREFIX = 'qg-'
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class L3PluginApi(proxy.RpcProxy):
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"""Agent side of the l3 agent RPC API.
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API version history:
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1.0 - Initial version.
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"""
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BASE_RPC_API_VERSION = '1.0'
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def __init__(self, topic, host):
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super(L3PluginApi, self).__init__(
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topic=topic, default_version=self.BASE_RPC_API_VERSION)
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self.host = host
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def get_routers(self, context, fullsync=True, router_id=None):
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"""Make a remote process call to retrieve the sync data for routers."""
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router_ids = [router_id] if router_id else None
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return self.call(context,
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self.make_msg('sync_routers', host=self.host,
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fullsync=fullsync,
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router_ids=router_ids),
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topic=self.topic)
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def get_external_network_id(self, context):
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"""Make a remote process call to retrieve the external network id.
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@raise common.RemoteError: with TooManyExternalNetworks
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as exc_type if there are
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more than one external network
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"""
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return self.call(context,
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self.make_msg('get_external_network_id',
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host=self.host),
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topic=self.topic)
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class RouterInfo(object):
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def __init__(self, router_id, root_helper, use_namespaces, router):
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self.router_id = router_id
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self.ex_gw_port = None
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self.internal_ports = []
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self.floating_ips = []
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self.root_helper = root_helper
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self.use_namespaces = use_namespaces
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self.router = router
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self.iptables_manager = iptables_manager.IptablesManager(
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root_helper=root_helper,
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#FIXME(danwent): use_ipv6=True,
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namespace=self.ns_name())
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self.routes = []
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def ns_name(self):
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if self.use_namespaces:
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return NS_PREFIX + self.router_id
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class L3NATAgent(manager.Manager):
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OPTS = [
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cfg.StrOpt('external_network_bridge', default='br-ex',
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help=_("Name of bridge used for external network "
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"traffic.")),
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cfg.StrOpt('interface_driver',
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help=_("The driver used to manage the virtual "
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"interface.")),
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cfg.IntOpt('metadata_port',
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default=9697,
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help=_("TCP Port used by Quantum metadata namespace "
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"proxy.")),
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cfg.IntOpt('send_arp_for_ha',
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default=3,
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help=_("Send this many gratuitous ARPs for HA setup, "
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"set it below or equal to 0 to disable this "
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"feature.")),
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cfg.BoolOpt('use_namespaces', default=True,
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help=_("Allow overlapping IP.")),
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cfg.StrOpt('router_id', default='',
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help=_("If namespaces is disabled, the l3 agent can only"
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" confgure a router that has the matching router "
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"ID.")),
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cfg.BoolOpt('handle_internal_only_routers',
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default=True,
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help=_("Agent should implement routers with no gateway")),
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cfg.StrOpt('gateway_external_network_id', default='',
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help=_("UUID of external network for routers implemented "
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"by the agents.")),
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cfg.StrOpt('l3_agent_manager',
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default='quantum.agent.l3_agent.L3NATAgent',
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help=_("The Quantum L3 Agent manager.")),
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]
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def __init__(self, host, conf=None):
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if conf:
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self.conf = conf
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else:
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self.conf = cfg.CONF
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self.root_helper = config.get_root_helper(self.conf)
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self.router_info = {}
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if not self.conf.interface_driver:
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raise SystemExit(_('An interface driver must be specified'))
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try:
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self.driver = importutils.import_object(self.conf.interface_driver,
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self.conf)
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except:
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msg = _("Error importing interface driver "
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"'%s'") % self.conf.interface_driver
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raise SystemExit(msg)
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self.context = context.get_admin_context_without_session()
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self.plugin_rpc = L3PluginApi(topics.PLUGIN, host)
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self.fullsync = True
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self.sync_sem = semaphore.Semaphore(1)
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if self.conf.use_namespaces:
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self._destroy_router_namespaces(self.conf.router_id)
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super(L3NATAgent, self).__init__(host=self.conf.host)
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def _destroy_router_namespaces(self, only_router_id=None):
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"""Destroy router namespaces on the host to eliminate all stale
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linux devices, iptables rules, and namespaces.
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If only_router_id is passed, only destroy single namespace, to allow
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for multiple l3 agents on the same host, without stepping on each
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other's toes on init. This only makes sense if router_id is set.
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"""
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root_ip = ip_lib.IPWrapper(self.root_helper)
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for ns in root_ip.get_namespaces(self.root_helper):
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if ns.startswith(NS_PREFIX):
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if only_router_id and not ns.endswith(only_router_id):
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continue
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try:
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self._destroy_router_namespace(ns)
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except:
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LOG.exception(_("Failed deleting namespace '%s'"), ns)
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def _destroy_router_namespace(self, namespace):
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ns_ip = ip_lib.IPWrapper(self.root_helper, namespace=namespace)
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for d in ns_ip.get_devices(exclude_loopback=True):
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if d.name.startswith(INTERNAL_DEV_PREFIX):
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# device is on default bridge
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self.driver.unplug(d.name, namespace=namespace,
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prefix=INTERNAL_DEV_PREFIX)
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elif d.name.startswith(EXTERNAL_DEV_PREFIX):
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self.driver.unplug(d.name,
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bridge=self.conf.external_network_bridge,
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namespace=namespace,
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prefix=EXTERNAL_DEV_PREFIX)
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#(TODO) Address the failure for the deletion of the namespace
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def _create_router_namespace(self, ri):
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ip_wrapper_root = ip_lib.IPWrapper(self.root_helper)
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ip_wrapper = ip_wrapper_root.ensure_namespace(ri.ns_name())
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ip_wrapper.netns.execute(['sysctl', '-w', 'net.ipv4.ip_forward=1'])
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def _fetch_external_net_id(self):
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"""Find UUID of single external network for this agent"""
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if self.conf.gateway_external_network_id:
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return self.conf.gateway_external_network_id
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try:
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return self.plugin_rpc.get_external_network_id(self.context)
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except rpc_common.RemoteError as e:
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if e.exc_type == 'TooManyExternalNetworks':
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msg = _(
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"The 'gateway_external_network_id' must be configured"
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" if Quantum has more than one external network.")
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raise Exception(msg)
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else:
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raise
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def _router_added(self, router_id, router):
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ri = RouterInfo(router_id, self.root_helper,
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self.conf.use_namespaces, router)
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self.router_info[router_id] = ri
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if self.conf.use_namespaces:
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self._create_router_namespace(ri)
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for c, r in self.metadata_filter_rules():
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ri.iptables_manager.ipv4['filter'].add_rule(c, r)
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for c, r in self.metadata_nat_rules():
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ri.iptables_manager.ipv4['nat'].add_rule(c, r)
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ri.iptables_manager.apply()
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self._spawn_metadata_proxy(ri)
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def _router_removed(self, router_id):
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ri = self.router_info[router_id]
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ri.router['gw_port'] = None
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ri.router[l3_constants.INTERFACE_KEY] = []
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ri.router[l3_constants.FLOATINGIP_KEY] = []
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self.process_router(ri)
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for c, r in self.metadata_filter_rules():
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ri.iptables_manager.ipv4['filter'].remove_rule(c, r)
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for c, r in self.metadata_nat_rules():
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ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
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ri.iptables_manager.apply()
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self._destroy_metadata_proxy(ri)
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del self.router_info[router_id]
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self._destroy_router_namespace(ri.ns_name())
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def _spawn_metadata_proxy(self, router_info):
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def callback(pid_file):
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return ['quantum-ns-metadata-proxy',
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'--pid_file=%s' % pid_file,
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'--router_id=%s' % router_info.router_id,
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'--state_path=%s' % self.conf.state_path]
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pm = external_process.ProcessManager(
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self.conf,
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router_info.router_id,
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self.root_helper,
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router_info.ns_name())
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pm.enable(callback)
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def _destroy_metadata_proxy(self, router_info):
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pm = external_process.ProcessManager(
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self.conf,
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router_info.router_id,
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self.root_helper,
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router_info.ns_name())
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pm.disable()
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def _set_subnet_info(self, port):
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ips = port['fixed_ips']
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if not ips:
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raise Exception(_("Router port %s has no IP address") % port['id'])
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if len(ips) > 1:
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LOG.error(_("Ignoring multiple IPs on router port %s"),
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port['id'])
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prefixlen = netaddr.IPNetwork(port['subnet']['cidr']).prefixlen
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port['ip_cidr'] = "%s/%s" % (ips[0]['ip_address'], prefixlen)
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def process_router(self, ri):
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ex_gw_port = self._get_ex_gw_port(ri)
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internal_ports = ri.router.get(l3_constants.INTERFACE_KEY, [])
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existing_port_ids = set([p['id'] for p in ri.internal_ports])
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current_port_ids = set([p['id'] for p in internal_ports
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if p['admin_state_up']])
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new_ports = [p for p in internal_ports if
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p['id'] in current_port_ids and
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p['id'] not in existing_port_ids]
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old_ports = [p for p in ri.internal_ports if
|
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p['id'] not in current_port_ids]
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|
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for p in new_ports:
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self._set_subnet_info(p)
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ri.internal_ports.append(p)
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self.internal_network_added(ri, ex_gw_port,
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p['network_id'], p['id'],
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p['ip_cidr'], p['mac_address'])
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for p in old_ports:
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ri.internal_ports.remove(p)
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self.internal_network_removed(ri, ex_gw_port, p['id'],
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p['ip_cidr'])
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internal_cidrs = [p['ip_cidr'] for p in ri.internal_ports]
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if ex_gw_port and not ri.ex_gw_port:
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self._set_subnet_info(ex_gw_port)
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self.external_gateway_added(ri, ex_gw_port, internal_cidrs)
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elif not ex_gw_port and ri.ex_gw_port:
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self.external_gateway_removed(ri, ri.ex_gw_port,
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internal_cidrs)
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if ri.ex_gw_port or ex_gw_port:
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self.process_router_floating_ips(ri, ex_gw_port)
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ri.ex_gw_port = ex_gw_port
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|
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self.routes_updated(ri)
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|
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def process_router_floating_ips(self, ri, ex_gw_port):
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floating_ips = ri.router.get(l3_constants.FLOATINGIP_KEY, [])
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existing_floating_ip_ids = set([fip['id'] for fip in ri.floating_ips])
|
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cur_floating_ip_ids = set([fip['id'] for fip in floating_ips])
|
|
|
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id_to_fip_map = {}
|
|
|
|
for fip in floating_ips:
|
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if fip['port_id']:
|
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if fip['id'] not in existing_floating_ip_ids:
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ri.floating_ips.append(fip)
|
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self.floating_ip_added(ri, ex_gw_port,
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fip['floating_ip_address'],
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fip['fixed_ip_address'])
|
|
|
|
# store to see if floatingip was remapped
|
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id_to_fip_map[fip['id']] = fip
|
|
|
|
floating_ip_ids_to_remove = (existing_floating_ip_ids -
|
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cur_floating_ip_ids)
|
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for fip in ri.floating_ips:
|
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if fip['id'] in floating_ip_ids_to_remove:
|
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ri.floating_ips.remove(fip)
|
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self.floating_ip_removed(ri, ri.ex_gw_port,
|
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fip['floating_ip_address'],
|
|
fip['fixed_ip_address'])
|
|
else:
|
|
# handle remapping of a floating IP
|
|
new_fip = id_to_fip_map[fip['id']]
|
|
new_fixed_ip = new_fip['fixed_ip_address']
|
|
existing_fixed_ip = fip['fixed_ip_address']
|
|
if (new_fixed_ip and existing_fixed_ip and
|
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new_fixed_ip != existing_fixed_ip):
|
|
floating_ip = fip['floating_ip_address']
|
|
self.floating_ip_removed(ri, ri.ex_gw_port,
|
|
floating_ip, existing_fixed_ip)
|
|
self.floating_ip_added(ri, ri.ex_gw_port,
|
|
floating_ip, new_fixed_ip)
|
|
ri.floating_ips.remove(fip)
|
|
ri.floating_ips.append(new_fip)
|
|
|
|
def _get_ex_gw_port(self, ri):
|
|
return ri.router.get('gw_port')
|
|
|
|
def _send_gratuitous_arp_packet(self, ri, interface_name, ip_address):
|
|
if self.conf.send_arp_for_ha > 0:
|
|
arping_cmd = ['arping', '-A', '-U',
|
|
'-I', interface_name,
|
|
'-c', self.conf.send_arp_for_ha,
|
|
ip_address]
|
|
try:
|
|
if self.conf.use_namespaces:
|
|
ip_wrapper = ip_lib.IPWrapper(self.root_helper,
|
|
namespace=ri.ns_name())
|
|
ip_wrapper.netns.execute(arping_cmd, check_exit_code=True)
|
|
else:
|
|
utils.execute(arping_cmd, check_exit_code=True,
|
|
root_helper=self.root_helper)
|
|
except Exception as e:
|
|
LOG.error(_("Failed sending gratuitous ARP: %s"), str(e))
|
|
|
|
def get_internal_device_name(self, port_id):
|
|
return (INTERNAL_DEV_PREFIX + port_id)[:self.driver.DEV_NAME_LEN]
|
|
|
|
def get_external_device_name(self, port_id):
|
|
return (EXTERNAL_DEV_PREFIX + port_id)[:self.driver.DEV_NAME_LEN]
|
|
|
|
def external_gateway_added(self, ri, ex_gw_port, internal_cidrs):
|
|
|
|
interface_name = self.get_external_device_name(ex_gw_port['id'])
|
|
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
|
|
if not ip_lib.device_exists(interface_name,
|
|
root_helper=self.root_helper,
|
|
namespace=ri.ns_name()):
|
|
self.driver.plug(ex_gw_port['network_id'],
|
|
ex_gw_port['id'], interface_name,
|
|
ex_gw_port['mac_address'],
|
|
bridge=self.conf.external_network_bridge,
|
|
namespace=ri.ns_name(),
|
|
prefix=EXTERNAL_DEV_PREFIX)
|
|
self.driver.init_l3(interface_name, [ex_gw_port['ip_cidr']],
|
|
namespace=ri.ns_name())
|
|
ip_address = ex_gw_port['ip_cidr'].split('/')[0]
|
|
self._send_gratuitous_arp_packet(ri, interface_name, ip_address)
|
|
|
|
gw_ip = ex_gw_port['subnet']['gateway_ip']
|
|
if ex_gw_port['subnet']['gateway_ip']:
|
|
cmd = ['route', 'add', 'default', 'gw', gw_ip]
|
|
if self.conf.use_namespaces:
|
|
ip_wrapper = ip_lib.IPWrapper(self.root_helper,
|
|
namespace=ri.ns_name())
|
|
ip_wrapper.netns.execute(cmd, check_exit_code=False)
|
|
else:
|
|
utils.execute(cmd, check_exit_code=False,
|
|
root_helper=self.root_helper)
|
|
|
|
for (c, r) in self.external_gateway_nat_rules(ex_gw_ip,
|
|
internal_cidrs,
|
|
interface_name):
|
|
ri.iptables_manager.ipv4['nat'].add_rule(c, r)
|
|
ri.iptables_manager.apply()
|
|
|
|
def external_gateway_removed(self, ri, ex_gw_port, internal_cidrs):
|
|
|
|
interface_name = self.get_external_device_name(ex_gw_port['id'])
|
|
if ip_lib.device_exists(interface_name,
|
|
root_helper=self.root_helper,
|
|
namespace=ri.ns_name()):
|
|
self.driver.unplug(interface_name,
|
|
bridge=self.conf.external_network_bridge,
|
|
namespace=ri.ns_name(),
|
|
prefix=EXTERNAL_DEV_PREFIX)
|
|
|
|
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
|
|
for c, r in self.external_gateway_nat_rules(ex_gw_ip, internal_cidrs,
|
|
interface_name):
|
|
ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
|
|
ri.iptables_manager.apply()
|
|
|
|
def metadata_filter_rules(self):
|
|
rules = []
|
|
rules.append(('INPUT', '-s 0.0.0.0/0 -d 127.0.0.1 '
|
|
'-p tcp -m tcp --dport %s '
|
|
'-j ACCEPT' % self.conf.metadata_port))
|
|
return rules
|
|
|
|
def metadata_nat_rules(self):
|
|
rules = []
|
|
rules.append(('PREROUTING', '-s 0.0.0.0/0 -d 169.254.169.254/32 '
|
|
'-p tcp -m tcp --dport 80 -j REDIRECT '
|
|
'--to-port %s' % self.conf.metadata_port))
|
|
return rules
|
|
|
|
def external_gateway_nat_rules(self, ex_gw_ip, internal_cidrs,
|
|
interface_name):
|
|
rules = [('POSTROUTING', '! -i %(interface_name)s '
|
|
'! -o %(interface_name)s -m conntrack ! '
|
|
'--ctstate DNAT -j ACCEPT' % locals())]
|
|
for cidr in internal_cidrs:
|
|
rules.extend(self.internal_network_nat_rules(ex_gw_ip, cidr))
|
|
return rules
|
|
|
|
def internal_network_added(self, ri, ex_gw_port, network_id, port_id,
|
|
internal_cidr, mac_address):
|
|
interface_name = self.get_internal_device_name(port_id)
|
|
if not ip_lib.device_exists(interface_name,
|
|
root_helper=self.root_helper,
|
|
namespace=ri.ns_name()):
|
|
self.driver.plug(network_id, port_id, interface_name, mac_address,
|
|
namespace=ri.ns_name(),
|
|
prefix=INTERNAL_DEV_PREFIX)
|
|
|
|
self.driver.init_l3(interface_name, [internal_cidr],
|
|
namespace=ri.ns_name())
|
|
ip_address = internal_cidr.split('/')[0]
|
|
self._send_gratuitous_arp_packet(ri, interface_name, ip_address)
|
|
|
|
if ex_gw_port:
|
|
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
|
|
for c, r in self.internal_network_nat_rules(ex_gw_ip,
|
|
internal_cidr):
|
|
ri.iptables_manager.ipv4['nat'].add_rule(c, r)
|
|
ri.iptables_manager.apply()
|
|
|
|
def internal_network_removed(self, ri, ex_gw_port, port_id, internal_cidr):
|
|
interface_name = self.get_internal_device_name(port_id)
|
|
if ip_lib.device_exists(interface_name,
|
|
root_helper=self.root_helper,
|
|
namespace=ri.ns_name()):
|
|
self.driver.unplug(interface_name, namespace=ri.ns_name(),
|
|
prefix=INTERNAL_DEV_PREFIX)
|
|
|
|
if ex_gw_port:
|
|
ex_gw_ip = ex_gw_port['fixed_ips'][0]['ip_address']
|
|
for c, r in self.internal_network_nat_rules(ex_gw_ip,
|
|
internal_cidr):
|
|
ri.iptables_manager.ipv4['nat'].remove_rule(c, r)
|
|
ri.iptables_manager.apply()
|
|
|
|
def internal_network_nat_rules(self, ex_gw_ip, internal_cidr):
|
|
rules = [('snat', '-s %s -j SNAT --to-source %s' %
|
|
(internal_cidr, ex_gw_ip))]
|
|
return rules
|
|
|
|
def floating_ip_added(self, ri, ex_gw_port, floating_ip, fixed_ip):
|
|
ip_cidr = str(floating_ip) + '/32'
|
|
interface_name = self.get_external_device_name(ex_gw_port['id'])
|
|
device = ip_lib.IPDevice(interface_name, self.root_helper,
|
|
namespace=ri.ns_name())
|
|
|
|
if ip_cidr not in [addr['cidr'] for addr in device.addr.list()]:
|
|
net = netaddr.IPNetwork(ip_cidr)
|
|
device.addr.add(net.version, ip_cidr, str(net.broadcast))
|
|
self._send_gratuitous_arp_packet(ri, interface_name, floating_ip)
|
|
|
|
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
|
|
ri.iptables_manager.ipv4['nat'].add_rule(chain, rule)
|
|
ri.iptables_manager.apply()
|
|
|
|
def floating_ip_removed(self, ri, ex_gw_port, floating_ip, fixed_ip):
|
|
ip_cidr = str(floating_ip) + '/32'
|
|
net = netaddr.IPNetwork(ip_cidr)
|
|
interface_name = self.get_external_device_name(ex_gw_port['id'])
|
|
|
|
device = ip_lib.IPDevice(interface_name, self.root_helper,
|
|
namespace=ri.ns_name())
|
|
device.addr.delete(net.version, ip_cidr)
|
|
|
|
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
|
|
ri.iptables_manager.ipv4['nat'].remove_rule(chain, rule)
|
|
ri.iptables_manager.apply()
|
|
|
|
def floating_forward_rules(self, floating_ip, fixed_ip):
|
|
return [('PREROUTING', '-d %s -j DNAT --to %s' %
|
|
(floating_ip, fixed_ip)),
|
|
('OUTPUT', '-d %s -j DNAT --to %s' %
|
|
(floating_ip, fixed_ip)),
|
|
('float-snat', '-s %s -j SNAT --to %s' %
|
|
(fixed_ip, floating_ip))]
|
|
|
|
def router_deleted(self, context, router_id):
|
|
"""Deal with router deletion RPC message."""
|
|
with self.sync_sem:
|
|
if router_id in self.router_info:
|
|
try:
|
|
self._router_removed(router_id)
|
|
except Exception:
|
|
msg = _("Failed dealing with router "
|
|
"'%s' deletion RPC message")
|
|
LOG.debug(msg, router_id)
|
|
self.fullsync = True
|
|
|
|
def routers_updated(self, context, routers):
|
|
"""Deal with routers modification and creation RPC message."""
|
|
if not routers:
|
|
return
|
|
with self.sync_sem:
|
|
try:
|
|
self._process_routers(routers)
|
|
except Exception:
|
|
msg = _("Failed dealing with routers update RPC message")
|
|
LOG.debug(msg)
|
|
self.fullsync = True
|
|
|
|
def router_removed_from_agent(self, context, payload):
|
|
self.router_deleted(context, payload['router_id'])
|
|
|
|
def router_added_to_agent(self, context, payload):
|
|
self.routers_updated(context, payload)
|
|
|
|
def _process_routers(self, routers, all_routers=False):
|
|
if (self.conf.external_network_bridge and
|
|
not ip_lib.device_exists(self.conf.external_network_bridge)):
|
|
LOG.error(_("The external network bridge '%s' does not exist"),
|
|
self.conf.external_network_bridge)
|
|
return
|
|
|
|
target_ex_net_id = self._fetch_external_net_id()
|
|
# if routers are all the routers we have (They are from router sync on
|
|
# starting or when error occurs during running), we seek the
|
|
# routers which should be removed.
|
|
# If routers are from server side notification, we seek them
|
|
# from subset of incoming routers and ones we have now.
|
|
if all_routers:
|
|
prev_router_ids = set(self.router_info)
|
|
else:
|
|
prev_router_ids = set(self.router_info) & set(
|
|
[router['id'] for router in routers])
|
|
cur_router_ids = set()
|
|
for r in routers:
|
|
if not r['admin_state_up']:
|
|
continue
|
|
|
|
# If namespaces are disabled, only process the router associated
|
|
# with the configured agent id.
|
|
if (not self.conf.use_namespaces and
|
|
r['id'] != self.conf.router_id):
|
|
continue
|
|
|
|
ex_net_id = (r['external_gateway_info'] or {}).get('network_id')
|
|
if not ex_net_id and not self.conf.handle_internal_only_routers:
|
|
continue
|
|
|
|
if ex_net_id and ex_net_id != target_ex_net_id:
|
|
continue
|
|
cur_router_ids.add(r['id'])
|
|
if r['id'] not in self.router_info:
|
|
self._router_added(r['id'], r)
|
|
ri = self.router_info[r['id']]
|
|
ri.router = r
|
|
self.process_router(ri)
|
|
# identify and remove routers that no longer exist
|
|
for router_id in prev_router_ids - cur_router_ids:
|
|
self._router_removed(router_id)
|
|
|
|
@periodic_task.periodic_task
|
|
def _sync_routers_task(self, context):
|
|
# we need to sync with router deletion RPC message
|
|
with self.sync_sem:
|
|
if self.fullsync:
|
|
try:
|
|
if not self.conf.use_namespaces:
|
|
router_id = self.conf.router_id
|
|
else:
|
|
router_id = None
|
|
routers = self.plugin_rpc.get_routers(
|
|
context, router_id)
|
|
self._process_routers(routers, all_routers=True)
|
|
self.fullsync = False
|
|
except Exception:
|
|
LOG.exception(_("Failed synchronizing routers"))
|
|
self.fullsync = True
|
|
|
|
def after_start(self):
|
|
LOG.info(_("L3 agent started"))
|
|
|
|
def _update_routing_table(self, ri, operation, route):
|
|
cmd = ['ip', 'route', operation, 'to', route['destination'],
|
|
'via', route['nexthop']]
|
|
#TODO(nati) move this code to iplib
|
|
if self.conf.use_namespaces:
|
|
ip_wrapper = ip_lib.IPWrapper(self.conf.root_helper,
|
|
namespace=ri.ns_name())
|
|
ip_wrapper.netns.execute(cmd, check_exit_code=False)
|
|
else:
|
|
utils.execute(cmd, check_exit_code=False,
|
|
root_helper=self.conf.root_helper)
|
|
|
|
def routes_updated(self, ri):
|
|
new_routes = ri.router['routes']
|
|
old_routes = ri.routes
|
|
adds, removes = common_utils.diff_list_of_dict(old_routes,
|
|
new_routes)
|
|
for route in adds:
|
|
LOG.debug(_("Added route entry is '%s'"), route)
|
|
# remove replaced route from deleted route
|
|
for del_route in removes:
|
|
if route['destination'] == del_route['destination']:
|
|
removes.remove(del_route)
|
|
#replace success even if there is no existing route
|
|
self._update_routing_table(ri, 'replace', route)
|
|
for route in removes:
|
|
LOG.debug(_("Removed route entry is '%s'"), route)
|
|
self._update_routing_table(ri, 'delete', route)
|
|
ri.routes = new_routes
|
|
|
|
|
|
class L3NATAgentWithStateReport(L3NATAgent):
|
|
|
|
def __init__(self, host, conf=None):
|
|
super(L3NATAgentWithStateReport, self).__init__(host=host, conf=conf)
|
|
self.state_rpc = agent_rpc.PluginReportStateAPI(topics.PLUGIN)
|
|
self.agent_state = {
|
|
'binary': 'quantum-l3-agent',
|
|
'host': host,
|
|
'topic': topics.L3_AGENT,
|
|
'configurations': {
|
|
'use_namespaces': self.conf.use_namespaces,
|
|
'router_id': self.conf.router_id,
|
|
'handle_internal_only_routers':
|
|
self.conf.handle_internal_only_routers,
|
|
'gateway_external_network_id':
|
|
self.conf.gateway_external_network_id,
|
|
'interface_driver': self.conf.interface_driver},
|
|
'start_flag': True,
|
|
'agent_type': l3_constants.AGENT_TYPE_L3}
|
|
report_interval = cfg.CONF.AGENT.report_interval
|
|
if report_interval:
|
|
heartbeat = loopingcall.LoopingCall(self._report_state)
|
|
heartbeat.start(interval=report_interval)
|
|
|
|
def _report_state(self):
|
|
num_ex_gw_ports = 0
|
|
num_interfaces = 0
|
|
num_floating_ips = 0
|
|
router_infos = self.router_info.values()
|
|
num_routers = len(router_infos)
|
|
for ri in router_infos:
|
|
ex_gw_port = self._get_ex_gw_port(ri)
|
|
if ex_gw_port:
|
|
num_ex_gw_ports += 1
|
|
num_interfaces += len(ri.router.get(l3_constants.INTERFACE_KEY,
|
|
[]))
|
|
num_floating_ips += len(ri.router.get(l3_constants.FLOATINGIP_KEY,
|
|
[]))
|
|
configurations = self.agent_state['configurations']
|
|
configurations['routers'] = num_routers
|
|
configurations['ex_gw_ports'] = num_ex_gw_ports
|
|
configurations['interfaces'] = num_interfaces
|
|
configurations['floating_ips'] = num_floating_ips
|
|
try:
|
|
self.state_rpc.report_state(self.context,
|
|
self.agent_state)
|
|
self.agent_state.pop('start_flag', None)
|
|
except Exception:
|
|
LOG.exception(_("Failed reporting state!"))
|
|
|
|
def agent_updated(self, context, payload):
|
|
"""Handle the agent_updated notification event."""
|
|
self.fullsync = True
|
|
LOG.info(_("agent_updated by server side %s!"), payload)
|
|
|
|
|
|
def main():
|
|
eventlet.monkey_patch()
|
|
conf = cfg.CONF
|
|
conf.register_opts(L3NATAgent.OPTS)
|
|
config.register_agent_state_opts_helper(conf)
|
|
config.register_root_helper(conf)
|
|
conf.register_opts(interface.OPTS)
|
|
conf.register_opts(external_process.OPTS)
|
|
conf()
|
|
config.setup_logging(conf)
|
|
server = quantum_service.Service.create(
|
|
binary='quantum-l3-agent',
|
|
topic=topics.L3_AGENT,
|
|
report_interval=cfg.CONF.AGENT.report_interval)
|
|
service.launch(server).wait()
|