def __init__(self, driver=None):
self.driver = driver or AristaL3Driver()
self.ndb = NeutronNets()
self.setup_rpc()
self.sync_timeout = cfg.CONF.l3_arista.l3_sync_interval
self.sync_lock = threading.Lock()
self._synchronization_thread()
def __init__(self, driver=None):
self.driver = driver or AristaL3Driver()
self.ndb = NeutronNets()
self.setup_rpc()
self.sync_timeout = cfg.CONF.l3_arista.l3_sync_interval
self.sync_lock = threading.Lock()
self._synchronization_thread()
class AristaL3ServicePlugin(db_base_plugin_v2.NeutronDbPluginV2,
extraroute_db.ExtraRoute_db_mixin,
l3_gwmode_db.L3_NAT_db_mixin,
l3_agentschedulers_db.L3AgentSchedulerDbMixin):
"""Implements L3 Router service plugin for Arista hardware.
Creates routers in Arista hardware, manages them, adds/deletes interfaces
to the routes.
"""
supported_extension_aliases = ["router", "ext-gw-mode",
"extraroute"]
def __init__(self, driver=None):
self.driver = driver or AristaL3Driver()
self.ndb = NeutronNets()
self.setup_rpc()
self.sync_timeout = cfg.CONF.l3_arista.l3_sync_interval
self.sync_lock = threading.Lock()
self._synchronization_thread()
def setup_rpc(self):
# RPC support
self.topic = topics.L3PLUGIN
self.conn = q_rpc.create_connection(new=True)
self.agent_notifiers.update(
{q_const.AGENT_TYPE_L3: l3_rpc_agent_api.L3AgentNotifyAPI()})
self.endpoints = [l3_rpc.L3RpcCallback()]
self.conn.create_consumer(self.topic, self.endpoints,
fanout=False)
self.conn.consume_in_threads()
def get_plugin_type(self):
return constants.L3_ROUTER_NAT
def get_plugin_description(self):
"""Returns string description of the plugin."""
return ("Arista L3 Router Service Plugin for Arista Hardware "
"based routing")
def _synchronization_thread(self):
with self.sync_lock:
self.synchronize()
self.timer = threading.Timer(self.sync_timeout,
self._synchronization_thread)
self.timer.start()
def stop_synchronization_thread(self):
if self.timer:
self.timer.cancel()
self.timer = None
@log.log
def create_router(self, context, router):
"""Create a new router entry in DB, and create it Arista HW."""
tenant_id = self._get_tenant_id_for_create(context, router['router'])
# Add router to the DB
with context.session.begin(subtransactions=True):
new_router = super(AristaL3ServicePlugin, self).create_router(
context,
router)
# create router on the Arista Hw
try:
self.driver.create_router(context, tenant_id, new_router)
return new_router
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(_("Error creating router on Arista HW "
"router=%s ") % new_router)
super(AristaL3ServicePlugin, self).delete_router(context,
new_router['id'])
@log.log
def update_router(self, context, router_id, router):
"""Update an existing router in DB, and update it in Arista HW."""
with context.session.begin(subtransactions=True):
# Read existing router record from DB
original_router = super(AristaL3ServicePlugin, self).get_router(
context, router_id)
# Update router DB
new_router = super(AristaL3ServicePlugin, self).update_router(
context, router_id, router)
# Modify router on the Arista Hw
try:
self.driver.update_router(context, router_id,
original_router, new_router)
return new_router
except Exception:
LOG.error(_("Error updating router on Arista HW "
"router=%s ") % new_router)
@log.log
def delete_router(self, context, router_id):
"""Delete an existing router from Arista HW as well as from the DB."""
router = super(AristaL3ServicePlugin, self).get_router(context,
router_id)
tenant_id = router['tenant_id']
# Delete router on the Arista Hw
try:
self.driver.delete_router(context, tenant_id, router_id, router)
except Exception as e:
LOG.error(_("Error deleting router on Arista HW "
"router %(r)s exception=%(e)s") %
{'r': router, 'e': e})
with context.session.begin(subtransactions=True):
super(AristaL3ServicePlugin, self).delete_router(context,
router_id)
@log.log
def add_router_interface(self, context, router_id, interface_info):
"""Add a subnet of a network to an existing router."""
new_router = super(AristaL3ServicePlugin, self).add_router_interface(
context, router_id, interface_info)
# Get network info for the subnet that is being added to the router.
# Check if the interface information is by port-id or subnet-id
add_by_port, add_by_sub = self._validate_interface_info(interface_info)
if add_by_sub:
subnet = self.get_subnet(context, interface_info['subnet_id'])
elif add_by_port:
port = self.get_port(context, interface_info['port_id'])
subnet_id = port['fixed_ips'][0]['subnet_id']
subnet = self.get_subnet(context, subnet_id)
network_id = subnet['network_id']
# To create SVI's in Arista HW, the segmentation Id is required
# for this network.
ml2_db = NetworkContext(self, context, {'id': network_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
# Package all the info needed for Hw programming
router = super(AristaL3ServicePlugin, self).get_router(context,
router_id)
router_info = copy.deepcopy(new_router)
router_info['seg_id'] = seg_id
router_info['name'] = router['name']
router_info['cidr'] = subnet['cidr']
router_info['gip'] = subnet['gateway_ip']
router_info['ip_version'] = subnet['ip_version']
try:
self.driver.add_router_interface(context, router_info)
return new_router
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(_("Error Adding subnet %(subnet)s to "
"router %(router_id)s on Arista HW") %
{'subnet': subnet, 'router_id': router_id})
super(AristaL3ServicePlugin, self).remove_router_interface(
context,
router_id,
interface_info)
@log.log
def remove_router_interface(self, context, router_id, interface_info):
"""Remove a subnet of a network from an existing router."""
new_router = (
super(AristaL3ServicePlugin, self).remove_router_interface(
context, router_id, interface_info))
# Get network information of the subnet that is being removed
subnet = self.get_subnet(context, new_router['subnet_id'])
network_id = subnet['network_id']
# For SVI removal from Arista HW, segmentation ID is needed
ml2_db = NetworkContext(self, context, {'id': network_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
router = super(AristaL3ServicePlugin, self).get_router(context,
router_id)
router_info = copy.deepcopy(new_router)
router_info['seg_id'] = seg_id
router_info['name'] = router['name']
try:
self.driver.remove_router_interface(context, router_info)
return new_router
except Exception as exc:
LOG.error(_("Error removing interface %(interface)s from "
"router %(router_id)s on Arista HW"
"Exception =(exc)s") % {'interface': interface_info,
'router_id': router_id,
'exc': exc})
def synchronize(self):
"""Synchronizes Router DB from Neturon DB with EOS.
Walks through the Neturon Db and ensures that all the routers
created in Netuton DB match with EOS. After creating appropriate
routers, it ensures to add interfaces as well.
Uses idempotent properties of EOS configuration, which means
same commands can be repeated.
"""
LOG.info(_('Syncing Neutron Router DB <-> EOS'))
ctx = nctx.get_admin_context()
routers = super(AristaL3ServicePlugin, self).get_routers(ctx)
for r in routers:
tenant_id = r['tenant_id']
ports = self.ndb.get_all_ports_for_tenant(tenant_id)
try:
self.driver.create_router(self, tenant_id, r)
except Exception:
continue
# Figure out which interfaces are added to this router
for p in ports:
if p['device_id'] == r['id']:
net_id = p['network_id']
subnet_id = p['fixed_ips'][0]['subnet_id']
subnet = self.ndb.get_subnet_info(subnet_id)
ml2_db = NetworkContext(self, ctx, {'id': net_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
r['seg_id'] = seg_id
r['cidr'] = subnet['cidr']
r['gip'] = subnet['gateway_ip']
r['ip_version'] = subnet['ip_version']
try:
self.driver.add_router_interface(self, r)
except Exception:
LOG.error(_("Error Adding interface %(subnet_id)s to "
"router %(router_id)s on Arista HW") %
{'subnet_id': subnet_id,
'router_id': r})
def _validate_interface_info(self, interface_info):
port_id_specified = interface_info and 'port_id' in interface_info
subnet_id_specified = interface_info and 'subnet_id' in interface_info
return port_id_specified, subnet_id_specified
class AristaL3ServicePlugin(db_base_plugin_v2.NeutronDbPluginV2,
extraroute_db.ExtraRoute_db_mixin,
l3_gwmode_db.L3_NAT_db_mixin,
l3_agentschedulers_db.L3AgentSchedulerDbMixin):
"""Implements L3 Router service plugin for Arista hardware.
Creates routers in Arista hardware, manages them, adds/deletes interfaces
to the routes.
"""
supported_extension_aliases = ["router", "ext-gw-mode", "extraroute"]
def __init__(self, driver=None):
self.driver = driver or AristaL3Driver()
self.ndb = NeutronNets()
self.setup_rpc()
self.sync_timeout = cfg.CONF.l3_arista.l3_sync_interval
self.sync_lock = threading.Lock()
self._synchronization_thread()
def setup_rpc(self):
# RPC support
self.topic = topics.L3PLUGIN
self.conn = q_rpc.create_connection(new=True)
self.agent_notifiers.update(
{q_const.AGENT_TYPE_L3: l3_rpc_agent_api.L3AgentNotifyAPI()})
self.endpoints = [l3_rpc.L3RpcCallback()]
self.conn.create_consumer(self.topic, self.endpoints, fanout=False)
self.conn.consume_in_threads()
def get_plugin_type(self):
return constants.L3_ROUTER_NAT
def get_plugin_description(self):
"""Returns string description of the plugin."""
return ("Arista L3 Router Service Plugin for Arista Hardware "
"based routing")
def _synchronization_thread(self):
with self.sync_lock:
self.synchronize()
self.timer = threading.Timer(self.sync_timeout,
self._synchronization_thread)
self.timer.start()
def stop_synchronization_thread(self):
if self.timer:
self.timer.cancel()
self.timer = None
@log.log
def create_router(self, context, router):
"""Create a new router entry in DB, and create it Arista HW."""
tenant_id = self._get_tenant_id_for_create(context, router['router'])
# Add router to the DB
with context.session.begin(subtransactions=True):
new_router = super(AristaL3ServicePlugin,
self).create_router(context, router)
# create router on the Arista Hw
try:
self.driver.create_router(context, tenant_id, new_router)
return new_router
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_("Error creating router on Arista HW "
"router=%s ") % new_router)
super(AristaL3ServicePlugin,
self).delete_router(context, new_router['id'])
@log.log
def update_router(self, context, router_id, router):
"""Update an existing router in DB, and update it in Arista HW."""
with context.session.begin(subtransactions=True):
# Read existing router record from DB
original_router = super(AristaL3ServicePlugin,
self).get_router(context, router_id)
# Update router DB
new_router = super(AristaL3ServicePlugin,
self).update_router(context, router_id, router)
# Modify router on the Arista Hw
try:
self.driver.update_router(context, router_id, original_router,
new_router)
return new_router
except Exception:
LOG.error(
_("Error updating router on Arista HW "
"router=%s ") % new_router)
@log.log
def delete_router(self, context, router_id):
"""Delete an existing router from Arista HW as well as from the DB."""
router = super(AristaL3ServicePlugin,
self).get_router(context, router_id)
tenant_id = router['tenant_id']
# Delete router on the Arista Hw
try:
self.driver.delete_router(context, tenant_id, router_id, router)
except Exception as e:
LOG.error(
_("Error deleting router on Arista HW "
"router %(r)s exception=%(e)s") % {
'r': router,
'e': e
})
with context.session.begin(subtransactions=True):
super(AristaL3ServicePlugin,
self).delete_router(context, router_id)
@log.log
def add_router_interface(self, context, router_id, interface_info):
"""Add a subnet of a network to an existing router."""
new_router = super(AristaL3ServicePlugin,
self).add_router_interface(context, router_id,
interface_info)
# Get network info for the subnet that is being added to the router.
# Check if the interface information is by port-id or subnet-id
add_by_port, add_by_sub = self._validate_interface_info(interface_info)
if add_by_sub:
subnet = self.get_subnet(context, interface_info['subnet_id'])
elif add_by_port:
port = self.get_port(context, interface_info['port_id'])
subnet_id = port['fixed_ips'][0]['subnet_id']
subnet = self.get_subnet(context, subnet_id)
network_id = subnet['network_id']
# To create SVI's in Arista HW, the segmentation Id is required
# for this network.
ml2_db = NetworkContext(self, context, {'id': network_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
# Package all the info needed for Hw programming
router = super(AristaL3ServicePlugin,
self).get_router(context, router_id)
router_info = copy.deepcopy(new_router)
router_info['seg_id'] = seg_id
router_info['name'] = router['name']
router_info['cidr'] = subnet['cidr']
router_info['gip'] = subnet['gateway_ip']
router_info['ip_version'] = subnet['ip_version']
try:
self.driver.add_router_interface(context, router_info)
return new_router
except Exception:
with excutils.save_and_reraise_exception():
LOG.error(
_("Error Adding subnet %(subnet)s to "
"router %(router_id)s on Arista HW") % {
'subnet': subnet,
'router_id': router_id
})
super(AristaL3ServicePlugin,
self).remove_router_interface(context, router_id,
interface_info)
@log.log
def remove_router_interface(self, context, router_id, interface_info):
"""Remove a subnet of a network from an existing router."""
new_router = (super(AristaL3ServicePlugin,
self).remove_router_interface(
context, router_id, interface_info))
# Get network information of the subnet that is being removed
subnet = self.get_subnet(context, new_router['subnet_id'])
network_id = subnet['network_id']
# For SVI removal from Arista HW, segmentation ID is needed
ml2_db = NetworkContext(self, context, {'id': network_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
router = super(AristaL3ServicePlugin,
self).get_router(context, router_id)
router_info = copy.deepcopy(new_router)
router_info['seg_id'] = seg_id
router_info['name'] = router['name']
try:
self.driver.remove_router_interface(context, router_info)
return new_router
except Exception as exc:
LOG.error(
_("Error removing interface %(interface)s from "
"router %(router_id)s on Arista HW"
"Exception =(exc)s") % {
'interface': interface_info,
'router_id': router_id,
'exc': exc
})
def synchronize(self):
"""Synchronizes Router DB from Neturon DB with EOS.
Walks through the Neturon Db and ensures that all the routers
created in Netuton DB match with EOS. After creating appropriate
routers, it ensures to add interfaces as well.
Uses idempotent properties of EOS configuration, which means
same commands can be repeated.
"""
LOG.info(_('Syncing Neutron Router DB <-> EOS'))
ctx = nctx.get_admin_context()
routers = super(AristaL3ServicePlugin, self).get_routers(ctx)
for r in routers:
tenant_id = r['tenant_id']
ports = self.ndb.get_all_ports_for_tenant(tenant_id)
try:
self.driver.create_router(self, tenant_id, r)
except Exception:
continue
# Figure out which interfaces are added to this router
for p in ports:
if p['device_id'] == r['id']:
net_id = p['network_id']
subnet_id = p['fixed_ips'][0]['subnet_id']
subnet = self.ndb.get_subnet_info(subnet_id)
ml2_db = NetworkContext(self, ctx, {'id': net_id})
seg_id = ml2_db.network_segments[0]['segmentation_id']
r['seg_id'] = seg_id
r['cidr'] = subnet['cidr']
r['gip'] = subnet['gateway_ip']
r['ip_version'] = subnet['ip_version']
try:
self.driver.add_router_interface(self, r)
except Exception:
LOG.error(
_("Error Adding interface %(subnet_id)s to "
"router %(router_id)s on Arista HW") % {
'subnet_id': subnet_id,
'router_id': r
})
def _validate_interface_info(self, interface_info):
port_id_specified = interface_info and 'port_id' in interface_info
subnet_id_specified = interface_info and 'subnet_id' in interface_info
return port_id_specified, subnet_id_specified