56cac98626
The linuxbridge, openvswitch, and hyperv plugins all use the same basic RPC interface between their plugins and L2 agents. But the attributes describing a virtual network passed from the plugin to the agent over this interface differed for historical reasons. The openvswitch and hyperv plugins each pass network_type, physical_network, and segmentation_id attributes, whereas the linuxbridge plugin previously passed vlan_id and physical_network attributes, using special vlan_id values to indicate flat or local network types. This patch changes the linuxbridge plugin to pass network_type and segmentation_id attributes instead of the vlan_id attribute, bringing its message formats into sync with the other plugins. RPC compatibility is required for blueprint modular-l2 so that the ml2 plugin can work with all three existing types of L2 agent. This RPC message format change is also required for blueprint vxlan-linuxbridge. Unlike the vxlan-linuxbridge patch on which it is based (see https://review.openstack.org/#/c/26516/), this patch does not bump the linuxbridge RPC version number, as the ml2 plugin will require all three L2 agents to use the same RPC version. Instead, the updated linuxbridge agent maintains compatibility with old linuxbridge plugins by accepting either the old or new attributes. There is also a configuration option, currently turned on by default, to enable the updated linuxbridge plugin to pass the vlan_id attribute expected by old linuxbridge agents along with the new attributes. These message format compatibility mechanisms are intended to aid during upgrades, and can eventually be removed. Change-Id: I7cc1c9f96b09db6bab2c7d9f2b30b79fa4dab919
693 lines
29 KiB
Python
Executable File
693 lines
29 KiB
Python
Executable File
#!/usr/bin/env python
|
|
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
#
|
|
# Copyright 2012 Cisco Systems, 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.
|
|
#
|
|
#
|
|
# Performs per host Linux Bridge configuration for Quantum.
|
|
# Based on the structure of the OpenVSwitch agent in the
|
|
# Quantum OpenVSwitch Plugin.
|
|
# @author: Sumit Naiksatam, Cisco Systems, Inc.
|
|
|
|
import os
|
|
import sys
|
|
import time
|
|
|
|
import eventlet
|
|
from oslo.config import cfg
|
|
import pyudev
|
|
|
|
from quantum.agent.linux import ip_lib
|
|
from quantum.agent.linux import utils
|
|
from quantum.agent import rpc as agent_rpc
|
|
from quantum.agent import securitygroups_rpc as sg_rpc
|
|
from quantum.common import config as logging_config
|
|
from quantum.common import constants
|
|
from quantum.common import topics
|
|
from quantum.common import utils as q_utils
|
|
from quantum import context
|
|
from quantum.openstack.common import log as logging
|
|
from quantum.openstack.common import loopingcall
|
|
from quantum.openstack.common.rpc import dispatcher
|
|
from quantum.plugins.linuxbridge.common import config # noqa
|
|
from quantum.plugins.linuxbridge.common import constants as lconst
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
BRIDGE_NAME_PREFIX = "brq"
|
|
TAP_INTERFACE_PREFIX = "tap"
|
|
BRIDGE_FS = "/sys/devices/virtual/net/"
|
|
BRIDGE_NAME_PLACEHOLDER = "bridge_name"
|
|
BRIDGE_INTERFACES_FS = BRIDGE_FS + BRIDGE_NAME_PLACEHOLDER + "/brif/"
|
|
DEVICE_NAME_PLACEHOLDER = "device_name"
|
|
BRIDGE_PORT_FS_FOR_DEVICE = BRIDGE_FS + DEVICE_NAME_PLACEHOLDER + "/brport"
|
|
|
|
|
|
class LinuxBridgeManager:
|
|
def __init__(self, interface_mappings, root_helper):
|
|
self.interface_mappings = interface_mappings
|
|
self.root_helper = root_helper
|
|
self.ip = ip_lib.IPWrapper(self.root_helper)
|
|
|
|
self.udev = pyudev.Context()
|
|
monitor = pyudev.Monitor.from_netlink(self.udev)
|
|
monitor.filter_by('net')
|
|
|
|
def device_exists(self, device):
|
|
"""Check if ethernet device exists."""
|
|
try:
|
|
utils.execute(['ip', 'link', 'show', 'dev', device],
|
|
root_helper=self.root_helper)
|
|
except RuntimeError:
|
|
return False
|
|
return True
|
|
|
|
def interface_exists_on_bridge(self, bridge, interface):
|
|
directory = '/sys/class/net/%s/brif' % bridge
|
|
for filename in os.listdir(directory):
|
|
if filename == interface:
|
|
return True
|
|
return False
|
|
|
|
def get_bridge_name(self, network_id):
|
|
if not network_id:
|
|
LOG.warning(_("Invalid Network ID, will lead to incorrect bridge"
|
|
"name"))
|
|
bridge_name = BRIDGE_NAME_PREFIX + network_id[0:11]
|
|
return bridge_name
|
|
|
|
def get_subinterface_name(self, physical_interface, vlan_id):
|
|
if not vlan_id:
|
|
LOG.warning(_("Invalid VLAN ID, will lead to incorrect "
|
|
"subinterface name"))
|
|
subinterface_name = '%s.%s' % (physical_interface, vlan_id)
|
|
return subinterface_name
|
|
|
|
def get_tap_device_name(self, interface_id):
|
|
if not interface_id:
|
|
LOG.warning(_("Invalid Interface ID, will lead to incorrect "
|
|
"tap device name"))
|
|
tap_device_name = TAP_INTERFACE_PREFIX + interface_id[0:11]
|
|
return tap_device_name
|
|
|
|
def get_all_quantum_bridges(self):
|
|
quantum_bridge_list = []
|
|
bridge_list = os.listdir(BRIDGE_FS)
|
|
for bridge in bridge_list:
|
|
if bridge.startswith(BRIDGE_NAME_PREFIX):
|
|
quantum_bridge_list.append(bridge)
|
|
return quantum_bridge_list
|
|
|
|
def get_interfaces_on_bridge(self, bridge_name):
|
|
if self.device_exists(bridge_name):
|
|
bridge_interface_path = BRIDGE_INTERFACES_FS.replace(
|
|
BRIDGE_NAME_PLACEHOLDER, bridge_name)
|
|
return os.listdir(bridge_interface_path)
|
|
|
|
def get_bridge_for_tap_device(self, tap_device_name):
|
|
bridges = self.get_all_quantum_bridges()
|
|
for bridge in bridges:
|
|
interfaces = self.get_interfaces_on_bridge(bridge)
|
|
if tap_device_name in interfaces:
|
|
return bridge
|
|
|
|
return None
|
|
|
|
def is_device_on_bridge(self, device_name):
|
|
if not device_name:
|
|
return False
|
|
else:
|
|
bridge_port_path = BRIDGE_PORT_FS_FOR_DEVICE.replace(
|
|
DEVICE_NAME_PLACEHOLDER, device_name)
|
|
return os.path.exists(bridge_port_path)
|
|
|
|
def ensure_vlan_bridge(self, network_id, physical_interface, vlan_id):
|
|
"""Create a vlan and bridge unless they already exist."""
|
|
interface = self.ensure_vlan(physical_interface, vlan_id)
|
|
bridge_name = self.get_bridge_name(network_id)
|
|
if self.ensure_bridge(bridge_name, interface):
|
|
return interface
|
|
|
|
def get_interface_details(self, interface):
|
|
device = self.ip.device(interface)
|
|
ips = device.addr.list(scope='global')
|
|
|
|
# Update default gateway if necessary
|
|
gateway = device.route.get_gateway(scope='global')
|
|
return ips, gateway
|
|
|
|
def ensure_flat_bridge(self, network_id, physical_interface):
|
|
"""Create a non-vlan bridge unless it already exists."""
|
|
bridge_name = self.get_bridge_name(network_id)
|
|
ips, gateway = self.get_interface_details(physical_interface)
|
|
if self.ensure_bridge(bridge_name, physical_interface, ips, gateway):
|
|
return physical_interface
|
|
|
|
def ensure_local_bridge(self, network_id):
|
|
"""Create a local bridge unless it already exists."""
|
|
bridge_name = self.get_bridge_name(network_id)
|
|
return self.ensure_bridge(bridge_name)
|
|
|
|
def ensure_vlan(self, physical_interface, vlan_id):
|
|
"""Create a vlan unless it already exists."""
|
|
interface = self.get_subinterface_name(physical_interface, vlan_id)
|
|
if not self.device_exists(interface):
|
|
LOG.debug(_("Creating subinterface %(interface)s for "
|
|
"VLAN %(vlan_id)s on interface "
|
|
"%(physical_interface)s"),
|
|
{'interface': interface, 'vlan_id': vlan_id,
|
|
'physical_interface': physical_interface})
|
|
if utils.execute(['ip', 'link', 'add', 'link',
|
|
physical_interface,
|
|
'name', interface, 'type', 'vlan', 'id',
|
|
vlan_id], root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['ip', 'link', 'set',
|
|
interface, 'up'], root_helper=self.root_helper):
|
|
return
|
|
LOG.debug(_("Done creating subinterface %s"), interface)
|
|
return interface
|
|
|
|
def update_interface_ip_details(self, destination, source, ips,
|
|
gateway):
|
|
if ips or gateway:
|
|
dst_device = self.ip.device(destination)
|
|
src_device = self.ip.device(source)
|
|
|
|
# Append IP's to bridge if necessary
|
|
if ips:
|
|
for ip in ips:
|
|
dst_device.addr.add(ip_version=ip['ip_version'],
|
|
cidr=ip['cidr'],
|
|
broadcast=ip['broadcast'])
|
|
|
|
if gateway:
|
|
# Ensure that the gateway can be updated by changing the metric
|
|
metric = 100
|
|
if 'metric' in gateway:
|
|
metric = gateway['metric'] - 1
|
|
dst_device.route.add_gateway(gateway=gateway['gateway'],
|
|
metric=metric)
|
|
src_device.route.delete_gateway(gateway=gateway['gateway'])
|
|
|
|
# Remove IP's from interface
|
|
if ips:
|
|
for ip in ips:
|
|
src_device.addr.delete(ip_version=ip['ip_version'],
|
|
cidr=ip['cidr'])
|
|
|
|
def ensure_bridge(self, bridge_name, interface=None, ips=None,
|
|
gateway=None):
|
|
"""Create a bridge unless it already exists."""
|
|
if not self.device_exists(bridge_name):
|
|
LOG.debug(_("Starting bridge %(bridge_name)s for subinterface "
|
|
"%(interface)s"),
|
|
{'bridge_name': bridge_name, 'interface': interface})
|
|
if utils.execute(['brctl', 'addbr', bridge_name],
|
|
root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['brctl', 'setfd', bridge_name,
|
|
str(0)], root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['brctl', 'stp', bridge_name,
|
|
'off'], root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['ip', 'link', 'set', bridge_name,
|
|
'up'], root_helper=self.root_helper):
|
|
return
|
|
LOG.debug(_("Done starting bridge %(bridge_name)s for "
|
|
"subinterface %(interface)s"),
|
|
{'bridge_name': bridge_name, 'interface': interface})
|
|
|
|
if not interface:
|
|
return bridge_name
|
|
|
|
# Update IP info if necessary
|
|
self.update_interface_ip_details(bridge_name, interface, ips, gateway)
|
|
|
|
# Check if the interface is part of the bridge
|
|
if not self.interface_exists_on_bridge(bridge_name, interface):
|
|
try:
|
|
utils.execute(['brctl', 'addif', bridge_name, interface],
|
|
root_helper=self.root_helper)
|
|
except Exception as e:
|
|
LOG.error(_("Unable to add %(interface)s to %(bridge_name)s! "
|
|
"Exception: %(e)s"),
|
|
{'interface': interface, 'bridge_name': bridge_name,
|
|
'e': e})
|
|
return
|
|
return bridge_name
|
|
|
|
def ensure_physical_in_bridge(self, network_id,
|
|
network_type,
|
|
physical_network,
|
|
segmentation_id):
|
|
physical_interface = self.interface_mappings.get(physical_network)
|
|
if not physical_interface:
|
|
LOG.error(_("No mapping for physical network %s"),
|
|
physical_network)
|
|
return
|
|
if network_type == lconst.TYPE_FLAT:
|
|
return self.ensure_flat_bridge(network_id, physical_interface)
|
|
elif network_type == lconst.TYPE_VLAN:
|
|
return self.ensure_vlan_bridge(network_id, physical_interface,
|
|
segmentation_id)
|
|
else:
|
|
LOG.error(_("Unknown network_type %(network_type)s for network "
|
|
"%(network_id)s."), {network_type: network_type,
|
|
network_id: network_id})
|
|
|
|
def add_tap_interface(self, network_id, network_type, physical_network,
|
|
segmentation_id, tap_device_name):
|
|
"""Add tap interface.
|
|
|
|
If a VIF has been plugged into a network, this function will
|
|
add the corresponding tap device to the relevant bridge.
|
|
"""
|
|
if not self.device_exists(tap_device_name):
|
|
LOG.debug(_("Tap device: %s does not exist on "
|
|
"this host, skipped"), tap_device_name)
|
|
return False
|
|
|
|
bridge_name = self.get_bridge_name(network_id)
|
|
if network_type == lconst.TYPE_LOCAL:
|
|
self.ensure_local_bridge(network_id)
|
|
elif not self.ensure_physical_in_bridge(network_id,
|
|
network_type,
|
|
physical_network,
|
|
segmentation_id):
|
|
return False
|
|
|
|
# Check if device needs to be added to bridge
|
|
tap_device_in_bridge = self.get_bridge_for_tap_device(tap_device_name)
|
|
if not tap_device_in_bridge:
|
|
data = {'tap_device_name': tap_device_name,
|
|
'bridge_name': bridge_name}
|
|
msg = _("Adding device %(tap_device_name)s to bridge "
|
|
"%(bridge_name)s") % data
|
|
LOG.debug(msg)
|
|
if utils.execute(['brctl', 'addif', bridge_name, tap_device_name],
|
|
root_helper=self.root_helper):
|
|
return False
|
|
else:
|
|
data = {'tap_device_name': tap_device_name,
|
|
'bridge_name': bridge_name}
|
|
msg = _("%(tap_device_name)s already exists on bridge "
|
|
"%(bridge_name)s") % data
|
|
LOG.debug(msg)
|
|
return True
|
|
|
|
def add_interface(self, network_id, network_type, physical_network,
|
|
segmentation_id, port_id):
|
|
tap_device_name = self.get_tap_device_name(port_id)
|
|
return self.add_tap_interface(network_id, network_type,
|
|
physical_network, segmentation_id,
|
|
tap_device_name)
|
|
|
|
def delete_vlan_bridge(self, bridge_name):
|
|
if self.device_exists(bridge_name):
|
|
interfaces_on_bridge = self.get_interfaces_on_bridge(bridge_name)
|
|
for interface in interfaces_on_bridge:
|
|
self.remove_interface(bridge_name, interface)
|
|
for physical_interface in self.interface_mappings.itervalues():
|
|
if physical_interface == interface:
|
|
# This is a flat network => return IP's from bridge to
|
|
# interface
|
|
ips, gateway = self.get_interface_details(bridge_name)
|
|
self.update_interface_ip_details(interface,
|
|
bridge_name,
|
|
ips, gateway)
|
|
else:
|
|
if interface.startswith(physical_interface):
|
|
self.delete_vlan(interface)
|
|
|
|
LOG.debug(_("Deleting bridge %s"), bridge_name)
|
|
if utils.execute(['ip', 'link', 'set', bridge_name, 'down'],
|
|
root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['brctl', 'delbr', bridge_name],
|
|
root_helper=self.root_helper):
|
|
return
|
|
LOG.debug(_("Done deleting bridge %s"), bridge_name)
|
|
|
|
else:
|
|
LOG.error(_("Cannot delete bridge %s, does not exist"),
|
|
bridge_name)
|
|
|
|
def remove_interface(self, bridge_name, interface_name):
|
|
if self.device_exists(bridge_name):
|
|
if not self.is_device_on_bridge(interface_name):
|
|
return True
|
|
LOG.debug(_("Removing device %(interface_name)s from bridge "
|
|
"%(bridge_name)s"),
|
|
{'interface_name': interface_name,
|
|
'bridge_name': bridge_name})
|
|
if utils.execute(['brctl', 'delif', bridge_name, interface_name],
|
|
root_helper=self.root_helper):
|
|
return False
|
|
LOG.debug(_("Done removing device %(interface_name)s from bridge "
|
|
"%(bridge_name)s"),
|
|
{'interface_name': interface_name,
|
|
'bridge_name': bridge_name})
|
|
return True
|
|
else:
|
|
LOG.debug(_("Cannot remove device %(interface_name)s bridge "
|
|
"%(bridge_name)s does not exist"),
|
|
{'interface_name': interface_name,
|
|
'bridge_name': bridge_name})
|
|
return False
|
|
|
|
def delete_vlan(self, interface):
|
|
if self.device_exists(interface):
|
|
LOG.debug(_("Deleting subinterface %s for vlan"), interface)
|
|
if utils.execute(['ip', 'link', 'set', interface, 'down'],
|
|
root_helper=self.root_helper):
|
|
return
|
|
if utils.execute(['ip', 'link', 'delete', interface],
|
|
root_helper=self.root_helper):
|
|
return
|
|
LOG.debug(_("Done deleting subinterface %s"), interface)
|
|
|
|
def update_devices(self, registered_devices):
|
|
devices = self.udev_get_tap_devices()
|
|
if devices == registered_devices:
|
|
return
|
|
added = devices - registered_devices
|
|
removed = registered_devices - devices
|
|
return {'current': devices,
|
|
'added': added,
|
|
'removed': removed}
|
|
|
|
def udev_get_tap_devices(self):
|
|
devices = set()
|
|
for device in self.udev.list_devices(subsystem='net'):
|
|
name = self.udev_get_name(device)
|
|
if self.is_tap_device(name):
|
|
devices.add(name)
|
|
return devices
|
|
|
|
def is_tap_device(self, name):
|
|
return name.startswith(TAP_INTERFACE_PREFIX)
|
|
|
|
def udev_get_name(self, device):
|
|
return device.sys_name
|
|
|
|
|
|
class LinuxBridgeRpcCallbacks(sg_rpc.SecurityGroupAgentRpcCallbackMixin):
|
|
|
|
# Set RPC API version to 1.0 by default.
|
|
# history
|
|
# 1.1 Support Security Group RPC
|
|
RPC_API_VERSION = '1.1'
|
|
|
|
def __init__(self, context, agent):
|
|
self.context = context
|
|
self.agent = agent
|
|
self.sg_agent = agent
|
|
|
|
def network_delete(self, context, **kwargs):
|
|
LOG.debug(_("network_delete received"))
|
|
network_id = kwargs.get('network_id')
|
|
bridge_name = self.agent.br_mgr.get_bridge_name(network_id)
|
|
LOG.debug(_("Delete %s"), bridge_name)
|
|
self.agent.br_mgr.delete_vlan_bridge(bridge_name)
|
|
|
|
def port_update(self, context, **kwargs):
|
|
LOG.debug(_("port_update received"))
|
|
# Check port exists on node
|
|
port = kwargs.get('port')
|
|
tap_device_name = self.agent.br_mgr.get_tap_device_name(port['id'])
|
|
devices = self.agent.br_mgr.udev_get_tap_devices()
|
|
if tap_device_name not in devices:
|
|
return
|
|
|
|
if 'security_groups' in port:
|
|
self.sg_agent.refresh_firewall()
|
|
|
|
if port['admin_state_up']:
|
|
network_type = kwargs.get('network_type')
|
|
if network_type:
|
|
segmentation_id = kwargs.get('segmentation_id')
|
|
else:
|
|
# compatibility with pre-Havana RPC vlan_id encoding
|
|
vlan_id = kwargs.get('vlan_id')
|
|
(network_type,
|
|
segmentation_id) = lconst.interpret_vlan_id(vlan_id)
|
|
physical_network = kwargs.get('physical_network')
|
|
# create the networking for the port
|
|
self.agent.br_mgr.add_interface(port['network_id'],
|
|
network_type,
|
|
physical_network,
|
|
segmentation_id,
|
|
port['id'])
|
|
# update plugin about port status
|
|
self.agent.plugin_rpc.update_device_up(self.context,
|
|
tap_device_name,
|
|
self.agent.agent_id)
|
|
else:
|
|
bridge_name = self.agent.br_mgr.get_bridge_name(
|
|
port['network_id'])
|
|
self.agent.br_mgr.remove_interface(bridge_name, tap_device_name)
|
|
# update plugin about port status
|
|
self.agent.plugin_rpc.update_device_down(self.context,
|
|
tap_device_name,
|
|
self.agent.agent_id)
|
|
|
|
def create_rpc_dispatcher(self):
|
|
'''Get the rpc dispatcher for this manager.
|
|
|
|
If a manager would like to set an rpc API version, or support more than
|
|
one class as the target of rpc messages, override this method.
|
|
'''
|
|
return dispatcher.RpcDispatcher([self])
|
|
|
|
|
|
class LinuxBridgePluginApi(agent_rpc.PluginApi,
|
|
sg_rpc.SecurityGroupServerRpcApiMixin):
|
|
pass
|
|
|
|
|
|
class LinuxBridgeQuantumAgentRPC(sg_rpc.SecurityGroupAgentRpcMixin):
|
|
|
|
def __init__(self, interface_mappings, polling_interval,
|
|
root_helper):
|
|
self.polling_interval = polling_interval
|
|
self.root_helper = root_helper
|
|
self.setup_linux_bridge(interface_mappings)
|
|
self.agent_state = {
|
|
'binary': 'quantum-linuxbridge-agent',
|
|
'host': cfg.CONF.host,
|
|
'topic': constants.L2_AGENT_TOPIC,
|
|
'configurations': interface_mappings,
|
|
'agent_type': constants.AGENT_TYPE_LINUXBRIDGE,
|
|
'start_flag': True}
|
|
|
|
self.setup_rpc(interface_mappings.values())
|
|
self.init_firewall()
|
|
|
|
def _report_state(self):
|
|
try:
|
|
devices = len(self.br_mgr.udev_get_tap_devices())
|
|
self.agent_state.get('configurations')['devices'] = devices
|
|
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 setup_rpc(self, physical_interfaces):
|
|
if physical_interfaces:
|
|
mac = utils.get_interface_mac(physical_interfaces[0])
|
|
else:
|
|
devices = ip_lib.IPWrapper(self.root_helper).get_devices(True)
|
|
if devices:
|
|
mac = utils.get_interface_mac(devices[0].name)
|
|
else:
|
|
LOG.error(_("Unable to obtain MAC address for unique ID. "
|
|
"Agent terminated!"))
|
|
exit(1)
|
|
self.agent_id = '%s%s' % ('lb', (mac.replace(":", "")))
|
|
LOG.info(_("RPC agent_id: %s"), self.agent_id)
|
|
|
|
self.topic = topics.AGENT
|
|
self.plugin_rpc = LinuxBridgePluginApi(topics.PLUGIN)
|
|
self.state_rpc = agent_rpc.PluginReportStateAPI(topics.PLUGIN)
|
|
# RPC network init
|
|
self.context = context.get_admin_context_without_session()
|
|
# Handle updates from service
|
|
self.callbacks = LinuxBridgeRpcCallbacks(self.context,
|
|
self)
|
|
self.dispatcher = self.callbacks.create_rpc_dispatcher()
|
|
# Define the listening consumers for the agent
|
|
consumers = [[topics.PORT, topics.UPDATE],
|
|
[topics.NETWORK, topics.DELETE],
|
|
[topics.SECURITY_GROUP, topics.UPDATE]]
|
|
self.connection = agent_rpc.create_consumers(self.dispatcher,
|
|
self.topic,
|
|
consumers)
|
|
report_interval = cfg.CONF.AGENT.report_interval
|
|
if report_interval:
|
|
heartbeat = loopingcall.FixedIntervalLoopingCall(
|
|
self._report_state)
|
|
heartbeat.start(interval=report_interval)
|
|
|
|
def setup_linux_bridge(self, interface_mappings):
|
|
self.br_mgr = LinuxBridgeManager(interface_mappings, self.root_helper)
|
|
|
|
def remove_port_binding(self, network_id, interface_id):
|
|
bridge_name = self.br_mgr.get_bridge_name(network_id)
|
|
tap_device_name = self.br_mgr.get_tap_device_name(interface_id)
|
|
return self.br_mgr.remove_interface(bridge_name, tap_device_name)
|
|
|
|
def process_network_devices(self, device_info):
|
|
resync_a = False
|
|
resync_b = False
|
|
if 'added' in device_info:
|
|
resync_a = self.treat_devices_added(device_info['added'])
|
|
if 'removed' in device_info:
|
|
resync_b = self.treat_devices_removed(device_info['removed'])
|
|
# If one of the above operations fails => resync with plugin
|
|
return (resync_a | resync_b)
|
|
|
|
def treat_devices_added(self, devices):
|
|
resync = False
|
|
self.prepare_devices_filter(devices)
|
|
for device in devices:
|
|
LOG.debug(_("Port %s added"), device)
|
|
try:
|
|
details = self.plugin_rpc.get_device_details(self.context,
|
|
device,
|
|
self.agent_id)
|
|
except Exception as e:
|
|
LOG.debug(_("Unable to get port details for "
|
|
"%(device)s: %(e)s"),
|
|
{'device': device, 'e': e})
|
|
resync = True
|
|
continue
|
|
if 'port_id' in details:
|
|
LOG.info(_("Port %(device)s updated. Details: %(details)s"),
|
|
{'device': device, 'details': details})
|
|
if details['admin_state_up']:
|
|
# create the networking for the port
|
|
network_type = details.get('network_type')
|
|
if network_type:
|
|
segmentation_id = details.get('segmentation_id')
|
|
else:
|
|
# compatibility with pre-Havana RPC vlan_id encoding
|
|
vlan_id = details.get('vlan_id')
|
|
(network_type,
|
|
segmentation_id) = lconst.interpret_vlan_id(vlan_id)
|
|
self.br_mgr.add_interface(details['network_id'],
|
|
network_type,
|
|
details['physical_network'],
|
|
segmentation_id,
|
|
details['port_id'])
|
|
else:
|
|
self.remove_port_binding(details['network_id'],
|
|
details['port_id'])
|
|
else:
|
|
LOG.info(_("Device %s not defined on plugin"), device)
|
|
return resync
|
|
|
|
def treat_devices_removed(self, devices):
|
|
resync = False
|
|
self.remove_devices_filter(devices)
|
|
for device in devices:
|
|
LOG.info(_("Attachment %s removed"), device)
|
|
try:
|
|
details = self.plugin_rpc.update_device_down(self.context,
|
|
device,
|
|
self.agent_id)
|
|
except Exception as e:
|
|
LOG.debug(_("port_removed failed for %(device)s: %(e)s"),
|
|
{'device': device, 'e': e})
|
|
resync = True
|
|
if details['exists']:
|
|
LOG.info(_("Port %s updated."), device)
|
|
# Nothing to do regarding local networking
|
|
else:
|
|
LOG.debug(_("Device %s not defined on plugin"), device)
|
|
return resync
|
|
|
|
def daemon_loop(self):
|
|
sync = True
|
|
devices = set()
|
|
|
|
LOG.info(_("LinuxBridge Agent RPC Daemon Started!"))
|
|
|
|
while True:
|
|
start = time.time()
|
|
if sync:
|
|
LOG.info(_("Agent out of sync with plugin!"))
|
|
devices.clear()
|
|
sync = False
|
|
device_info = {}
|
|
try:
|
|
device_info = self.br_mgr.update_devices(devices)
|
|
except Exception:
|
|
LOG.exception(_("Update devices failed"))
|
|
sync = True
|
|
try:
|
|
# notify plugin about device deltas
|
|
if device_info:
|
|
LOG.debug(_("Agent loop has new devices!"))
|
|
# If treat devices fails - indicates must resync with
|
|
# plugin
|
|
sync = self.process_network_devices(device_info)
|
|
devices = device_info['current']
|
|
except Exception:
|
|
LOG.exception(_("Error in agent loop. Devices info: %s"),
|
|
device_info)
|
|
sync = True
|
|
# sleep till end of polling interval
|
|
elapsed = (time.time() - start)
|
|
if (elapsed < self.polling_interval):
|
|
time.sleep(self.polling_interval - elapsed)
|
|
else:
|
|
LOG.debug(_("Loop iteration exceeded interval "
|
|
"(%(polling_interval)s vs. %(elapsed)s)!"),
|
|
{'polling_interval': self.polling_interval,
|
|
'elapsed': elapsed})
|
|
|
|
|
|
def main():
|
|
eventlet.monkey_patch()
|
|
cfg.CONF(project='quantum')
|
|
|
|
logging_config.setup_logging(cfg.CONF)
|
|
try:
|
|
interface_mappings = q_utils.parse_mappings(
|
|
cfg.CONF.LINUX_BRIDGE.physical_interface_mappings)
|
|
except ValueError as e:
|
|
LOG.error(_("Parsing physical_interface_mappings failed: %s."
|
|
" Agent terminated!"), e)
|
|
sys.exit(1)
|
|
LOG.info(_("Interface mappings: %s"), interface_mappings)
|
|
|
|
polling_interval = cfg.CONF.AGENT.polling_interval
|
|
root_helper = cfg.CONF.AGENT.root_helper
|
|
plugin = LinuxBridgeQuantumAgentRPC(interface_mappings,
|
|
polling_interval,
|
|
root_helper)
|
|
LOG.info(_("Agent initialized successfully, now running... "))
|
|
plugin.daemon_loop()
|
|
sys.exit(0)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|