272 lines
10 KiB
Python
272 lines
10 KiB
Python
# Copyright 2014 IBM Corp.
|
|
#
|
|
# 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.
|
|
#
|
|
# @author: Mohammad Banikazemi, IBM Corp.
|
|
|
|
|
|
import socket
|
|
import time
|
|
|
|
import eventlet
|
|
eventlet.monkey_patch()
|
|
|
|
from oslo.config import cfg
|
|
|
|
from neutron.agent.linux import ip_lib
|
|
from neutron.agent.linux import ovs_lib
|
|
from neutron.agent import rpc as agent_rpc
|
|
from neutron.common import config as logging_config
|
|
from neutron.common import constants as n_const
|
|
from neutron.common import topics
|
|
from neutron.common import utils as n_utils
|
|
from neutron import context
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.openstack.common import loopingcall
|
|
from neutron.openstack.common.rpc import dispatcher
|
|
from neutron.plugins.ibm.common import config # noqa
|
|
from neutron.plugins.ibm.common import constants
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class SdnvePluginApi(agent_rpc.PluginApi):
|
|
|
|
def sdnve_info(self, context, info):
|
|
return self.call(context,
|
|
self.make_msg('sdnve_info', info=info),
|
|
topic=self.topic)
|
|
|
|
|
|
class SdnveNeutronAgent():
|
|
|
|
RPC_API_VERSION = '1.1'
|
|
|
|
def __init__(self, integ_br, interface_mappings,
|
|
info, root_helper, polling_interval,
|
|
controller_ip, reset_br, out_of_band):
|
|
'''The agent initialization.
|
|
|
|
Sets the following parameters and sets up the integration
|
|
bridge and physical interfaces if need be.
|
|
:param integ_br: name of the integration bridge.
|
|
:param interface_mappings: interfaces to physical networks.
|
|
:param info: local IP address of this hypervisor.
|
|
:param root_helper: utility to use when running shell cmds.
|
|
:param polling_interval: interval (secs) to poll DB.
|
|
:param controller_ip: Ip address of SDN-VE controller.
|
|
'''
|
|
|
|
self.root_helper = root_helper
|
|
self.int_bridge_name = integ_br
|
|
self.controller_ip = controller_ip
|
|
self.interface_mappings = interface_mappings
|
|
self.polling_interval = polling_interval
|
|
self.info = info
|
|
self.reset_br = reset_br
|
|
self.out_of_band = out_of_band
|
|
|
|
self.agent_state = {
|
|
'binary': 'neutron-sdnve-agent',
|
|
'host': cfg.CONF.host,
|
|
'topic': n_const.L2_AGENT_TOPIC,
|
|
'configurations': {'interface_mappings': interface_mappings,
|
|
'reset_br': self.reset_br,
|
|
'out_of_band': self.out_of_band,
|
|
'controller_ip': self.controller_ip},
|
|
'agent_type': n_const.AGENT_TYPE_SDNVE,
|
|
'start_flag': True}
|
|
|
|
if self.int_bridge_name:
|
|
self.int_br = self.setup_integration_br(integ_br, reset_br,
|
|
out_of_band,
|
|
self.controller_ip)
|
|
self.setup_physical_interfaces(self.interface_mappings)
|
|
else:
|
|
self.int_br = None
|
|
|
|
self.setup_rpc()
|
|
|
|
def _report_state(self):
|
|
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 setup_rpc(self):
|
|
if self.int_br:
|
|
mac = self.int_br.get_local_port_mac()
|
|
self.agent_id = '%s%s' % ('sdnve', (mac.replace(":", "")))
|
|
else:
|
|
nameaddr = socket.gethostbyname(socket.gethostname())
|
|
self.agent_id = '%s%s' % ('sdnve_', (nameaddr.replace(".", "_")))
|
|
|
|
self.topic = topics.AGENT
|
|
self.plugin_rpc = SdnvePluginApi(topics.PLUGIN)
|
|
self.state_rpc = agent_rpc.PluginReportStateAPI(topics.PLUGIN)
|
|
|
|
self.context = context.get_admin_context_without_session()
|
|
self.dispatcher = self.create_rpc_dispatcher()
|
|
consumers = [[constants.INFO, topics.UPDATE]]
|
|
|
|
self.connection = agent_rpc.create_consumers(self.dispatcher,
|
|
self.topic,
|
|
consumers)
|
|
if self.polling_interval:
|
|
heartbeat = loopingcall.FixedIntervalLoopingCall(
|
|
self._report_state)
|
|
heartbeat.start(interval=self.polling_interval)
|
|
|
|
# Plugin calls the agents through the following
|
|
def info_update(self, context, **kwargs):
|
|
LOG.debug(_("info_update received"))
|
|
info = kwargs.get('info', {})
|
|
new_controller = info.get('new_controller')
|
|
out_of_band = info.get('out_of_band')
|
|
if self.int_br and new_controller:
|
|
LOG.debug(_("info_update received. New controller"
|
|
"is to be set to: %s"), new_controller)
|
|
self.int_br.run_vsctl(["set-controller",
|
|
self.int_bridge_name,
|
|
"tcp:" + new_controller])
|
|
if out_of_band:
|
|
LOG.debug(_("info_update received. New controller"
|
|
"is set to be out of band"))
|
|
self.int_br.set_db_attribute("controller",
|
|
self.int_bridge_name,
|
|
"connection-mode",
|
|
"out-of-band")
|
|
|
|
def create_rpc_dispatcher(self):
|
|
return dispatcher.RpcDispatcher([self])
|
|
|
|
def setup_integration_br(self, bridge_name, reset_br, out_of_band,
|
|
controller_ip=None):
|
|
'''Sets up the integration bridge.
|
|
|
|
Create the bridge and remove all existing flows if reset_br is True.
|
|
Otherwise, creates the bridge if not already existing.
|
|
:param bridge_name: the name of the integration bridge.
|
|
:param reset_br: A boolean to rest the bridge if True.
|
|
:param out_of_band: A boolean indicating controller is out of band.
|
|
:param controller_ip: IP address to use as the bridge controller.
|
|
:returns: the integration bridge
|
|
'''
|
|
|
|
int_br = ovs_lib.OVSBridge(bridge_name, self.root_helper)
|
|
if reset_br:
|
|
int_br.reset_bridge()
|
|
int_br.remove_all_flows()
|
|
else:
|
|
int_br.create()
|
|
|
|
# set the controller
|
|
if controller_ip:
|
|
int_br.run_vsctl(
|
|
["set-controller", bridge_name, "tcp:" + controller_ip])
|
|
if out_of_band:
|
|
int_br.set_db_attribute("controller", bridge_name,
|
|
"connection-mode", "out-of-band")
|
|
|
|
return int_br
|
|
|
|
def setup_physical_interfaces(self, interface_mappings):
|
|
'''Sets up the physical network interfaces.
|
|
|
|
Link physical interfaces to the integration bridge.
|
|
:param interface_mappings: map physical net names to interface names.
|
|
'''
|
|
|
|
for physical_network, interface in interface_mappings.iteritems():
|
|
LOG.info(_("Mapping physical network %(physical_network)s to "
|
|
"interface %(interface)s"),
|
|
{'physical_network': physical_network,
|
|
'interface': interface})
|
|
# Connect the physical interface to the bridge
|
|
if not ip_lib.device_exists(interface, self.root_helper):
|
|
LOG.error(_("Interface %(interface)s for physical network "
|
|
"%(physical_network)s does not exist. Agent "
|
|
"terminated!"),
|
|
{'physical_network': physical_network,
|
|
'interface': interface})
|
|
raise SystemExit(1)
|
|
self.int_br.add_port(interface)
|
|
|
|
def sdnve_info(self):
|
|
details = self.plugin_rpc.sdnve_info(
|
|
self.context,
|
|
{'info': self.info})
|
|
return details
|
|
|
|
def rpc_loop(self):
|
|
|
|
while True:
|
|
start = time.time()
|
|
LOG.debug(_("Agent in the rpc loop."))
|
|
|
|
# sleep till end of polling interval
|
|
elapsed = (time.time() - start)
|
|
if (elapsed < self.polling_interval):
|
|
time.sleep(self.polling_interval - elapsed)
|
|
else:
|
|
LOG.info(_("Loop iteration exceeded interval "
|
|
"(%(polling_interval)s vs. %(elapsed)s)!"),
|
|
{'polling_interval': self.polling_interval,
|
|
'elapsed': elapsed})
|
|
|
|
def daemon_loop(self):
|
|
self.rpc_loop()
|
|
|
|
|
|
def create_agent_config_map(config):
|
|
|
|
interface_mappings = n_utils.parse_mappings(
|
|
config.SDNVE.interface_mappings)
|
|
|
|
controller_ips = config.SDNVE.controller_ips
|
|
LOG.info(_("Controller IPs: %s"), controller_ips)
|
|
controller_ip = controller_ips[0]
|
|
|
|
return {
|
|
'integ_br': config.SDNVE.integration_bridge,
|
|
'interface_mappings': interface_mappings,
|
|
'controller_ip': controller_ip,
|
|
'info': config.SDNVE.info,
|
|
'root_helper': config.SDNVE_AGENT.root_helper,
|
|
'polling_interval': config.SDNVE_AGENT.polling_interval,
|
|
'reset_br': config.SDNVE.reset_bridge,
|
|
'out_of_band': config.SDNVE.out_of_band}
|
|
|
|
|
|
def main():
|
|
cfg.CONF.register_opts(ip_lib.OPTS)
|
|
cfg.CONF(project='neutron')
|
|
logging_config.setup_logging(cfg.CONF)
|
|
|
|
try:
|
|
agent_config = create_agent_config_map(cfg.CONF)
|
|
except ValueError as e:
|
|
LOG.exception(_("%s Agent terminated!"), e)
|
|
raise SystemExit(1)
|
|
|
|
plugin = SdnveNeutronAgent(**agent_config)
|
|
|
|
# Start everything.
|
|
LOG.info(_("Agent initialized successfully, now running... "))
|
|
plugin.daemon_loop()
|