/
to_bgp.py
3625 lines (3242 loc) · 145 KB
/
to_bgp.py
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#
# Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
#
"""
This file contains implementation of transforming user-exposed VNC
configuration model/schema to a representation needed by VNC Control Plane
(BGP-based)
"""
import gevent
# Import kazoo.client before monkey patching
from cfgm_common.zkclient import ZookeeperClient,IndexAllocator
from gevent import monkey
monkey.patch_all()
import sys
reload(sys)
sys.setdefaultencoding('UTF8')
import requests
import ConfigParser
import cgitb
import copy
import argparse
import socket
import uuid
from lxml import etree
import re
from cfgm_common import vnc_cpu_info
import pycassa
from pycassa.system_manager import *
from pycassa.pool import AllServersUnavailable
import cfgm_common as common
from cfgm_common.exceptions import *
from cfgm_common.imid import *
from cfgm_common import svc_info
from vnc_api.vnc_api import *
from pysandesh.sandesh_base import *
from pysandesh.gen_py.sandesh.ttypes import SandeshLevel
from cfgm_common.uve.virtual_network.ttypes import *
from sandesh_common.vns.ttypes import Module, NodeType
from sandesh_common.vns.constants import ModuleNames, Module2NodeType, NodeTypeNames, INSTANCE_ID_DEFAULT
from schema_transformer.sandesh.st_introspect import ttypes as sandesh
import discoveryclient.client as client
try:
#python2.7
from collections import OrderedDict
except:
#python2.6
from ordereddict import OrderedDict
import jsonpickle
from pysandesh.connection_info import ConnectionState
from pysandesh.gen_py.process_info.ttypes import ConnectionType, \
ConnectionStatus
from cfgm_common.uve.cfgm_cpuinfo.ttypes import NodeStatusUVE, \
NodeStatus
from cStringIO import StringIO
_BGP_RTGT_MAX_ID = 1 << 24
_BGP_RTGT_ALLOC_PATH = "/id/bgp/route-targets/"
_VN_MAX_ID = 1 << 24
_VN_ID_ALLOC_PATH = "/id/virtual-networks/"
_SECURITY_GROUP_MAX_ID = 1 << 32
_SECURITY_GROUP_ID_ALLOC_PATH = "/id/security-groups/id/"
_SERVICE_CHAIN_MAX_VLAN = 4093
_SERVICE_CHAIN_VLAN_ALLOC_PATH = "/id/service-chain/vlan/"
_PROTO_STR_TO_NUM = {
'icmp': '1',
'tcp': '6',
'udp': '17',
'any': 'any',
}
_sandesh = None
# connection to api-server
_vnc_lib = None
# zookeeper client connection
_zookeeper_client = None
def _ports_eq(lhs, rhs):
return lhs.start_port == rhs.start_port and lhs.end_port == rhs.end_port
# end _ports_eq
PortType.__eq__ = _ports_eq
class DictST(object):
class __metaclass__(type):
def __iter__(cls):
for i in cls._dict:
yield i
# end __iter__
def values(cls):
for i in cls._dict.values():
yield i
# end values
def items(cls):
for i in cls._dict.items():
yield i
# end items
# end __metaclass__
@classmethod
def get(cls, name):
if name in cls._dict:
return cls._dict[name]
return None
# end get
@classmethod
def locate(cls, name, *args):
if name not in cls._dict:
try:
cls._dict[name] = cls(name, *args)
except NoIdError as e:
_sandesh._logger.error("Exception %s while creating %s for %s",
e, cls.__name__, name)
return None
return cls._dict[name]
# end locate
# end DictST
def get_si_vns(si_obj, si_props):
left_vn = None
right_vn = None
st_refs = si_obj.get_service_template_refs()
uuid = st_refs[0]['uuid']
st_obj = _vnc_lib.service_template_read(id=uuid)
st_props = st_obj.get_service_template_properties()
if st_props.get_ordered_interfaces():
st_if_list = st_props.get_interface_type()
si_if_list = si_props.get_interface_list()
for idx in range(0, len(st_if_list)):
st_if = st_if_list[idx]
si_if = si_if_list[idx]
if st_if.get_service_interface_type() == 'left':
left_vn = si_if.get_virtual_network()
elif st_if.get_service_interface_type() == 'right':
right_vn = si_if.get_virtual_network()
else:
left_vn = si_props.get_left_virtual_network()
right_vn = si_props.get_right_virtual_network()
if left_vn == "":
left_vn = parent_str + ':' + svc_info.get_left_vn_name()
if right_vn == "":
right_vn = parent_str + ':' + svc_info.get_right_vn_name()
return left_vn, right_vn
# end get_si_vns
def _access_control_list_update(acl_obj, name, obj, entries):
if acl_obj is None:
try:
# Check if there is any stale object. If there is, delete it
acl_name = copy.deepcopy(obj.get_fq_name())
acl_name.append(name)
_vnc_lib.access_control_list_delete(fq_name=acl_name)
except NoIdError:
pass
if entries is None:
return None
acl_obj = AccessControlList(name, obj, entries)
try:
_vnc_lib.access_control_list_create(acl_obj)
return acl_obj
except BadRequest as e:
_sandesh._logger.error(
"Bad request while creating acl %s for %s: %s",
name, obj.get_fq_name_str(), str(e))
return None
else:
if entries is None:
try:
_vnc_lib.access_control_list_delete(id=acl_obj.uuid)
except NoIdError:
pass
return None
# Set new value of entries on the ACL
acl_obj.set_access_control_list_entries(entries)
try:
_vnc_lib.access_control_list_update(acl_obj)
except HttpError as he:
_sandesh._logger.error(
"HTTP error while updating acl %s for %s: %d, %s",
name, obj.get_fq_name_str(), he.status_code, he.content)
except NoIdError:
_sandesh._logger.error("NoIdError while updating acl %s for %s",
name, obj.get_fq_name_str())
return acl_obj
# end _access_control_list_update
# a struct to store attributes related to Virtual Networks needed by
# schema transformer
class VirtualNetworkST(DictST):
_dict = {}
_rt_cf = None
_sc_ip_cf = None
_autonomous_system = 0
_vn_id_allocator = None
_sg_id_allocator = None
_rt_allocator = None
_sc_vlan_allocator_dict = {}
def __init__(self, name):
self.obj = _vnc_lib.virtual_network_read(fq_name_str=name)
self.name = name
self.policies = OrderedDict()
self.connections = set()
self.rinst = {}
self.acl = None
self.dynamic_acl = None
for acl in self.obj.get_access_control_lists() or []:
acl_obj = _vnc_lib.access_control_list_read(id=acl['uuid'])
if acl_obj.name == self.obj.name:
self.acl = acl_obj
elif acl_obj.name == 'dynamic':
self.dynamic_acl = acl_obj
self.ipams = {}
rt_list = self.obj.get_route_target_list()
if rt_list:
self.rt_list = set(rt_list.get_route_target())
for rt in self.rt_list:
RouteTargetST.locate(rt)
else:
self.rt_list = set()
self._route_target = 0
self.route_table_refs = set()
self.route_table = {}
self.service_chains = {}
prop = self.obj.get_virtual_network_properties(
) or VirtualNetworkType()
self.allow_transit = prop.allow_transit
if prop.network_id is None:
prop.network_id = self._vn_id_allocator.alloc(name) + 1
self.obj.set_virtual_network_properties(prop)
_vnc_lib.virtual_network_update(self.obj)
if self.obj.get_fq_name() == common.IP_FABRIC_VN_FQ_NAME:
self._default_ri_name = common.IP_FABRIC_RI_FQ_NAME[-1]
self.locate_routing_instance_no_target(self._default_ri_name)
elif self.obj.get_fq_name() == common.LINK_LOCAL_VN_FQ_NAME:
self._default_ri_name = common.LINK_LOCAL_RI_FQ_NAME[-1]
self.locate_routing_instance_no_target(self._default_ri_name)
else:
self._default_ri_name = self.obj.name
self.locate_routing_instance(self._default_ri_name)
for ri in self.obj.get_routing_instances() or []:
ri_name = ri['to'][-1]
if ri_name not in self.rinst:
self.locate_routing_instance(ri_name)
for policy in NetworkPolicyST.values():
if policy.internal and name in policy.network_back_ref:
self.add_policy(policy.name)
self.uve_send()
# end __init__
@classmethod
def delete(cls, name):
vn = cls.get(name)
analyzer_vn_set = set()
if vn:
for service_chain_list in vn.service_chains.values():
for service_chain in service_chain_list:
service_chain.destroy()
for ri in vn.rinst.values():
vn.delete_routing_instance(ri)
if vn.acl:
_vnc_lib.access_control_list_delete(id=vn.acl.uuid)
if vn.dynamic_acl:
_vnc_lib.access_control_list_delete(id=vn.dynamic_acl.uuid)
props = vn.obj.get_virtual_network_properties()
if props and props.network_id:
cls._vn_id_allocator.delete(props.network_id - 1)
for policy in NetworkPolicyST.values():
if name in policy.analyzer_vn_set:
analyzer_vn_set |= policy.networks_back_ref
policy.analyzer_vn_set.discard(name)
del cls._dict[name]
vn.uve_send(deleted=True)
return analyzer_vn_set
# end delete
@classmethod
def get_autonomous_system(cls):
if cls._autonomous_system == 0:
gsc = _vnc_lib.global_system_config_read(
fq_name=['default-global-system-config'])
cls._autonomous_system = int(gsc.get_autonomous_system())
return cls._autonomous_system
# end get_autonomous_system
@classmethod
def update_autonomous_system(cls, new_asn):
# ifmap reports as string, obj read could return it as int
if int(new_asn) == cls._autonomous_system:
return
for vn in cls._dict.values():
if (vn.obj.get_fq_name() in
[common.IP_FABRIC_VN_FQ_NAME,
common.LINK_LOCAL_VN_FQ_NAME]):
# for ip-fabric and link-local VN, we don't need to update asn
continue
ri = vn.get_primary_routing_instance()
ri_fq_name = ri.get_fq_name_str()
rtgt_num = int(cls._rt_cf.get(ri_fq_name)['rtgt_num'])
old_rtgt_name = "target:%d:%d" % (cls._autonomous_system, rtgt_num)
new_rtgt_name = "target:%s:%d" % (new_asn, rtgt_num)
new_rtgt_obj = RouteTargetST.locate(new_rtgt_name)
old_rtgt_obj = RouteTarget(old_rtgt_name)
inst_tgt_data = InstanceTargetType()
ri.obj = _vnc_lib.routing_instance_read(fq_name_str=ri_fq_name)
ri.obj.del_route_target(old_rtgt_obj)
ri.obj.add_route_target(new_rtgt_obj, inst_tgt_data)
_vnc_lib.routing_instance_update(ri.obj)
for (prefix, nexthop) in vn.route_table.items():
left_ri = vn._get_routing_instance_from_route(nexthop)
if left_ri is None:
continue
left_ri.update_route_target_list(
set([new_rtgt_name]), set([old_rtgt_name]), "import")
static_route_entries = left_ri.obj.get_static_route_entries()
if static_route_entries is None:
continue
for static_route in static_route_entries.get_route() or []:
if old_rtgt_name in static_route.route_target:
static_route.route_target.remove(old_rtgt_name)
static_route.route_target.append(new_rtgt_name)
_vnc_lib.routing_instance_update(left_ri.obj)
try:
_vnc_lib.route_target_delete(
fq_name=old_rtgt_obj.get_fq_name())
except RefsExistError:
# if other routing instances are referring to this target,
# it will be deleted when those instances are deleted
pass
# end for vn
for router in BgpRouterST.values():
router.update_autonomous_system(new_asn)
# end for router
for router in LogicalRouterST.values():
router.update_autonomous_system(new_asn)
# end for router
cls._autonomous_system = int(new_asn)
# end update_autonomous_system
def add_policy(self, policy_name, attrib=None):
# Add a policy ref to the vn. Keep it sorted by sequence number
if attrib is None:
attrib = VirtualNetworkPolicyType(SequenceType(sys.maxint,
sys.maxint))
if attrib.sequence is None:
_sandesh._logger.error("Cannot assign policy %s to %s: sequence "
"number is not available", policy_name,
self.name)
return
self.policies[policy_name] = attrib
self.policies = OrderedDict(sorted(self.policies.items(),
key=lambda t:(t[1].sequence.major,
t[1].sequence.minor)))
#end add_policy
def get_primary_routing_instance(self):
return self.rinst[self._default_ri_name]
# end get_primary_routing_instance
def add_connection(self, vn_name):
if vn_name == "any":
self.connections.add("*")
# Need to do special processing for "*"
elif vn_name != self.name:
self.connections.add(vn_name)
# end add_connection
def add_ri_connection(self, virtual_network_2):
vn2 = VirtualNetworkST.get(virtual_network_2)
if not vn2:
# connection published on receiving <vn2>
return
if (set([virtual_network_2, "*"]) & self.connections and
set([self.name, "*"]) & vn2.connections):
self.get_primary_routing_instance().add_connection(
vn2.get_primary_routing_instance())
vn2.uve_send()
# end add_ri_connection
def delete_ri_connection(self, virtual_network_2):
vn2 = VirtualNetworkST.get(virtual_network_2)
if vn2 is None:
return
self.get_primary_routing_instance().delete_connection(
vn2.get_primary_routing_instance())
vn2.uve_send()
# end delete_ri_connection
def add_service_chain(self, remote_vn, left_vn, right_vn, direction,
sp_list, dp_list, proto, service_list):
service_chain_list = self.service_chains.get(remote_vn)
if service_chain_list is None:
service_chain_list = []
self.service_chains[remote_vn] = service_chain_list
service_chain = ServiceChain.find_or_create(left_vn, right_vn,
direction, sp_list, dp_list, proto,
service_list)
if service_chain.service_list != service_list:
if service_chain.created:
service_chain.destroy()
service_chain.service_list = service_list
service_chain.create()
else:
service_chain.service_list = service_list
if service_chain not in service_chain_list:
service_chain_list.append(service_chain)
return service_chain.name
# end add_service_chain
def get_vns_in_project(self):
# return a set of all virtual networks with the same parent as self
return set((k) for k, v in self._dict.items()
if (self.name != v.name and
self.obj.get_parent_fq_name() ==
v.obj.get_parent_fq_name()))
# end get_vns_in_project
def allocate_service_chain_ip(self, sc_name):
try:
sc_ip_address = self._sc_ip_cf.get(sc_name)['ip_address']
except pycassa.NotFoundException:
try:
sc_ip_address = _vnc_lib.virtual_network_ip_alloc(
self.obj, count=1)[0]
except (NoIdError, RefsExistError) as e:
_sandesh._logger.error(
"Error while allocating ip in network %s: %s", self.name,
str(e))
return None
self._sc_ip_cf.insert(sc_name, {'ip_address': sc_ip_address})
return sc_ip_address
# end allocate_service_chain_ip
def free_service_chain_ip(self, sc_name):
try:
sc_ip_address = self._sc_ip_cf.get(sc_name)['ip_address']
self._sc_ip_cf.remove(sc_name)
_vnc_lib.virtual_network_ip_free(self.obj, [sc_ip_address])
except (NoIdError, pycassa.NotFoundException):
pass
# end free_service_chain_ip
@classmethod
def allocate_service_chain_vlan(cls, service_vm, service_chain):
alloc_new = False
if service_vm not in cls._sc_vlan_allocator_dict:
cls._sc_vlan_allocator_dict[service_vm] = IndexAllocator(
_zookeeper_client,
(SchemaTransformer._zk_path_prefix +
_SERVICE_CHAIN_VLAN_ALLOC_PATH+service_vm),
_SERVICE_CHAIN_MAX_VLAN)
vlan_ia = cls._sc_vlan_allocator_dict[service_vm]
try:
vlan = int(
cls._service_chain_cf.get(service_vm)[service_chain])
db_sc = vlan_ia.read(vlan)
if (db_sc is None) or (db_sc != service_chain):
alloc_new = True
except (KeyError, pycassa.NotFoundException):
alloc_new = True
if alloc_new:
# TODO handle overflow + check alloc'd id is not in use
vlan = vlan_ia.alloc(service_chain)
cls._service_chain_cf.insert(service_vm, {service_chain: str(vlan)})
# Since vlan tag 0 is not valid, increment before returning
return vlan + 1
# end allocate_service_chain_vlan
@classmethod
def free_service_chain_vlan(cls, service_vm, service_chain):
try:
vlan_ia = cls._sc_vlan_allocator_dict[service_vm]
vlan = int(cls._service_chain_cf.get(service_vm)[service_chain])
cls._service_chain_cf.remove(service_vm, [service_chain])
vlan_ia.delete(vlan)
if vlan_ia.empty():
del cls._sc_vlan_allocator_dict[service_vm]
except (KeyError, pycassa.NotFoundException):
pass
# end free_service_chain_vlan
def get_route_target(self):
return "target:%s:%d" % (self.get_autonomous_system(),
self._route_target)
# end get_route_target
def locate_routing_instance_no_target(self, rinst_name):
""" locate a routing instance but do not allocate a route target """
if rinst_name in self.rinst:
return self.rinst[rinst_name]
rinst_fq_name_str = '%s:%s' % (self.obj.get_fq_name_str(), rinst_name)
try:
rinst_obj = _vnc_lib.routing_instance_read(
fq_name_str=rinst_fq_name_str)
rinst = RoutingInstanceST(rinst_obj)
self.rinst[rinst_name] = rinst
return rinst
except NoIdError:
_sandesh._logger.error(
"Cannot read routing instance %s", rinst_fq_name_str)
return None
# end locate_routing_instance_no_target
def locate_routing_instance(self, rinst_name, service_chain=None):
if rinst_name in self.rinst:
return self.rinst[rinst_name]
is_default = (rinst_name == self._default_ri_name)
alloc_new = False
rinst_fq_name_str = '%s:%s' % (self.obj.get_fq_name_str(), rinst_name)
old_rtgt = None
try:
rtgt_num = int(self._rt_cf.get(rinst_fq_name_str)['rtgt_num'])
if rtgt_num < common.BGP_RTGT_MIN_ID:
old_rtgt = rtgt_num
raise pycassa.NotFoundException
rtgt_ri_fq_name_str = self._rt_allocator.read(rtgt_num)
if (rtgt_ri_fq_name_str != rinst_fq_name_str):
alloc_new = True
except pycassa.NotFoundException:
alloc_new = True
if (alloc_new):
# TODO handle overflow + check alloc'd id is not in use
rtgt_num = self._rt_allocator.alloc(rinst_fq_name_str)
self._rt_cf.insert(rinst_fq_name_str, {'rtgt_num': str(rtgt_num)})
rt_key = "target:%s:%d" % (self.get_autonomous_system(), rtgt_num)
rtgt_obj = RouteTargetST.locate(rt_key)
inst_tgt_data = InstanceTargetType()
try:
try:
rinst_obj = _vnc_lib.routing_instance_read(
fq_name_str=rinst_fq_name_str)
if rinst_obj.parent_uuid != self.obj.uuid:
# Stale object. Delete it.
_vnc_lib.routing_instance_delete(id=rinst_obj.uuid)
rinst_obj = None
else:
rinst_obj.set_route_target(rtgt_obj, inst_tgt_data)
rinst_obj.set_routing_instance_is_default(is_default)
for rt in self.rt_list:
rtgt_obj = RouteTarget(rt)
if is_default:
inst_tgt_data = InstanceTargetType()
else:
inst_tgt_data = InstanceTargetType(
import_export="export")
rinst_obj.add_route_target(rtgt_obj, inst_tgt_data)
_vnc_lib.routing_instance_update(rinst_obj)
except NoIdError:
rinst_obj = None
if rinst_obj is None:
rinst_obj = RoutingInstance(rinst_name, self.obj)
rinst_obj.set_route_target(rtgt_obj, inst_tgt_data)
rinst_obj.set_routing_instance_is_default(is_default)
for rt in self.rt_list:
rtgt_obj = RouteTarget(rt)
if is_default:
inst_tgt_data = InstanceTargetType()
else:
inst_tgt_data = InstanceTargetType(
import_export="export")
rinst_obj.add_route_target(rtgt_obj, inst_tgt_data)
_vnc_lib.routing_instance_create(rinst_obj)
except (BadRequest, HttpError) as e:
_sandesh._logger.error(
"Error while creating routing instance: " + str(e))
return None
if rinst_obj.name == self._default_ri_name:
self._route_target = rtgt_num
rinst = RoutingInstanceST(rinst_obj, service_chain, rt_key)
self.rinst[rinst_name] = rinst
if old_rtgt:
rt_key = "target:%s:%d" % (self.get_autonomous_system(), old_rtgt)
_vnc_lib.route_target_delete(fq_name=[rt_key])
return rinst
# end locate_routing_instance
def delete_routing_instance(self, ri, old_ri_list=None):
if old_ri_list:
for ri2 in old_ri_list.values():
if ri.get_fq_name_str() in ri2.connections:
ri2.delete_connection(ri)
for vn in self._dict.values():
for ri2 in vn.rinst.values():
if ri.get_fq_name_str() in ri2.connections:
ri2.delete_connection(ri)
ri.delete(self)
del self.rinst[ri.name]
# end delete_routing_instance
def update_ipams(self):
# update prefixes on service chain routing instances
for sc_list in self.service_chains.values():
for service_chain in sc_list:
service_chain.update_ipams(self.name)
# end update_ipams
def expand_connections(self):
if '*' in self.connections:
conn = self.connections - set(['*']) | self.get_vns_in_project()
for vn in self._dict.values():
if self.name in vn.connections:
conn.add(vn.name)
return conn
return self.connections
# end expand_connections
def set_properties(self, properties):
if self.allow_transit == properties.allow_transit:
# If allow_transit didn't change, then we have nothing to do
return
self.allow_transit = properties.allow_transit
for sc_list in self.service_chains.values():
for service_chain in sc_list:
ri_name = self.get_service_name(service_chain.name,
service_chain.service_list[0])
ri = self.rinst.get(ri_name)
if not ri:
continue
if self.allow_transit:
# if the network is now a transit network, add the VN's
# route target to all service RIs
ri.update_route_target_list([self.get_route_target()], [],
import_export='export')
else:
# if the network is not a transit network any more, then we
# need to delete the route target from service RIs
ri.update_route_target_list([], [self.get_route_target()],
import_export='export')
# end set_properties
def set_route_target_list(self, rt_list):
ri = self.get_primary_routing_instance()
old_rt_list = self.rt_list
self.rt_list = set(rt_list.get_route_target())
rt_add = self.rt_list - old_rt_list
rt_del = old_rt_list - self.rt_list
if len(rt_add) == 0 and len(rt_del) == 0:
return
for rt in rt_add:
RouteTargetST.locate(rt)
ri.update_route_target_list(rt_add, rt_del)
for ri_obj in self.rinst.values():
if ri == ri_obj:
continue
ri_obj.update_route_target_list(rt_add, rt_del,
import_export='export')
for (prefix, nexthop) in self.route_table.items():
left_ri = self._get_routing_instance_from_route(nexthop)
if left_ri is not None:
left_ri.update_route_target_list(rt_add, rt_del,
import_export='import')
for rt in rt_del:
try:
_vnc_lib.route_target_delete(fq_name=[rt])
except RefsExistError:
# if other routing instances are referring to this target,
# it will be deleted when those instances are deleted
pass
# end set_route_target_list
# next-hop in a route contains fq-name of a service instance, which must
# be an auto policy instance. This function will get the left vn for that
# service instance and get the primary and service routing instances
def _get_routing_instance_from_route(self, next_hop):
try:
si = _vnc_lib.service_instance_read(fq_name_str=next_hop)
si_props = si.get_service_instance_properties()
if si_props is None:
return None
except NoIdError:
_sandesh._logger.error("Cannot read service instance %s", next_hop)
return None
if not si_props.auto_policy:
_sandesh._logger.error("%s: route table next hop must be service "
"instance with auto policy", self.name)
return None
left_vn_str, right_vn_str = get_si_vns(si, si_props)
if (not left_vn_str or not right_vn_str):
_sandesh._logger.error("%s: route table next hop service instance "
"must have left and right virtual networks",
self.name)
return None
left_vn = VirtualNetworkST.get(left_vn_str)
if left_vn is None:
_sandesh._logger.error("Virtual network %s not present",
left_vn_str)
return None
sc = ServiceChain.find(left_vn_str, right_vn_str, '<>',
[PortType(0, -1)], [PortType(0, -1)], 'any')
if sc is None:
_sandesh._logger.error("Service chain between %s and %s not "
"present", left_vn_str, right_vn_str)
return None
left_ri_name = left_vn.get_service_name(sc.name, next_hop)
return left_vn.rinst.get(left_ri_name)
# end _get_routing_instance_from_route
def add_route(self, prefix, next_hop):
self.route_table[prefix] = next_hop
left_ri = self._get_routing_instance_from_route(next_hop)
if left_ri is None:
_sandesh._logger.error(
"left routing instance is none for %s", next_hop)
return
service_info = left_ri.obj.get_service_chain_information()
if service_info is None:
_sandesh._logger.error(
"Service chain info not found for %s", left_ri.name)
return
sc_address = service_info.get_service_chain_address()
static_route_entries = left_ri.obj.get_static_route_entries(
) or StaticRouteEntriesType()
for static_route in static_route_entries.get_route() or []:
if prefix == static_route.prefix:
if self.get_route_target() not in static_route.route_target:
static_route.route_target.append(self.get_route_target())
break
else:
static_route = StaticRouteType(
prefix=prefix, next_hop=sc_address,
route_target=[self.get_route_target()])
static_route_entries.add_route(static_route)
left_ri.obj.set_static_route_entries(static_route_entries)
_vnc_lib.routing_instance_update(left_ri.obj)
left_ri.update_route_target_list(
rt_add=self.rt_list | set([self.get_route_target()]),
import_export="import")
# end add_route
def delete_route(self, prefix):
if prefix not in self.route_table:
return
next_hop = self.route_table[prefix]
del self.route_table[prefix]
left_ri = self._get_routing_instance_from_route(next_hop)
if left_ri is None:
return
left_ri.update_route_target_list(rt_add=set(),
rt_del=self.rt_list | set(
[self.get_route_target()]),
import_export="import")
static_route_entries = left_ri.obj.get_static_route_entries()
for static_route in static_route_entries.get_route() or []:
if static_route.prefix != prefix:
continue
if self.get_route_target() in static_route.route_target:
static_route.route_target.remove(self.get_route_target())
if static_route.route_target == []:
static_route_entries.delete_route(static_route)
left_ri.obj._pending_field_updates.add('static_route_entries')
_vnc_lib.routing_instance_update(left_ri.obj)
return
# end delete_route
def update_route_table(self):
stale = {}
for prefix in self.route_table:
stale[prefix] = True
for rt_name in self.route_table_refs:
route_table = RouteTableST.get(rt_name)
if route_table is None or route_table.routes is None:
continue
for route in route_table.routes or []:
if route.prefix in self.route_table:
stale.pop(route.prefix, None)
if route.next_hop == self.route_table[route.prefix]:
continue
self.delete_route(route.prefix)
# end if route.prefix
self.add_route(route.prefix, route.next_hop)
# end for route
# end for route_table
for prefix in stale:
self.delete_route(prefix)
# end update_route_table
def uve_send(self, deleted=False):
vn_trace = UveVirtualNetworkConfig(name=self.name,
connected_networks=[],
partially_connected_networks=[],
routing_instance_list=[],
total_acl_rules=0)
if deleted:
vn_trace.deleted = True
vn_msg = UveVirtualNetworkConfigTrace(data=vn_trace,
sandesh=_sandesh)
vn_msg.send(sandesh=_sandesh)
return
if self.acl:
vn_trace.total_acl_rules += \
len(self.acl.get_access_control_list_entries().get_acl_rule())
for ri in self.rinst.values():
vn_trace.routing_instance_list.append(ri.name)
for rhs in self.expand_connections():
rhs_vn = VirtualNetworkST.get(rhs)
if rhs_vn and self.name in rhs_vn.expand_connections():
# two way connection
vn_trace.connected_networks.append(rhs)
else:
# one way connection
vn_trace.partially_connected_networks.append(rhs)
#end for
for rhs in self.service_chains:
rhs_vn = VirtualNetworkST.get(rhs)
if rhs_vn and self.name in rhs_vn.service_chains:
# two way connection
vn_trace.connected_networks.append(rhs)
else:
# one way connection
vn_trace.partially_connected_networks.append(rhs)
#end for
vn_msg = UveVirtualNetworkConfigTrace(data=vn_trace, sandesh=_sandesh)
vn_msg.send(sandesh=_sandesh)
# end uve_send
def get_service_name(self, sc_name, si_name):
name = "service-" + sc_name + "-" + si_name
return name.replace(':', '_')
# end get_service_name
@staticmethod
def get_analyzer_vn_and_ip(analyzer_name):
vn_analyzer = None
ip_analyzer = None
try:
si = _vnc_lib.service_instance_read(fq_name_str=analyzer_name)
vm_analyzer = si.get_virtual_machine_back_refs()
if vm_analyzer is None:
return (None, None)
vm_analyzer_obj = _vnc_lib.virtual_machine_read(
id=vm_analyzer[0]['uuid'])
if vm_analyzer_obj is None:
return (None, None)
vmi_refs = (vm_analyzer_obj.get_virtual_machine_interfaces() or
vm_analyzer_obj.get_virtual_machine_interface_back_refs())
if vmi_refs is None:
return (None, None)
for vmi_ref in vmi_refs:
vmi = _vnc_lib.virtual_machine_interface_read(
id=vmi_ref['uuid'])
vmi_props = vmi.get_virtual_machine_interface_properties()
if (vmi_props and
vmi_props.get_service_interface_type() == 'left'):
vmi_vn_refs = vmi.get_virtual_network_refs()
if vmi_vn_refs:
vn_analyzer = ':'.join(vmi_vn_refs[0]['to'])
if_ip = vmi.get_instance_ip_back_refs()
if_ip = vmi.get_instance_ip_back_refs()
if if_ip:
if_ip_obj = _vnc_lib.instance_ip_read(
id=if_ip[0]['uuid'])
ip_analyzer = if_ip_obj.get_instance_ip_address()
break
# end for vmi_ref
except NoIdError:
pass
return (vn_analyzer, ip_analyzer)
# end get_analyzer_vn_and_ip
def process_analyzer(self, action):
analyzer_name = action.mirror_to.analyzer_name
try:
(vn_analyzer, ip) = self.get_analyzer_vn_and_ip(analyzer_name)
if ip:
action.mirror_to.set_analyzer_ip_address(ip)
if vn_analyzer:
_sandesh._logger.error("Mirror: adding connection from %s-%s",
self.name, vn_analyzer)
self.add_connection(vn_analyzer)
if vn_analyzer in VirtualNetworkST:
_sandesh._logger.error("Mirror: adding reverse connection")
VirtualNetworkST.get(vn_analyzer).add_connection(self.name)
else:
_sandesh._logger.error("Mirror: %s: no analyzer vn for %s",
self.name, analyzer_name)
except NoIdError:
return
# end process_analyzer
@staticmethod
def protocol_policy_to_acl(pproto):
# convert policy proto input(in str) to acl proto (num)
if pproto.isdigit():
return pproto
return _PROTO_STR_TO_NUM.get(pproto.lower())
# end protocol_policy_to_acl
def policy_to_acl_rule(self, prule, dynamic):
result_acl_rule_list = AclRuleListST(dynamic=dynamic)
saddr_list = prule.src_addresses
sp_list = prule.src_ports
daddr_list = prule.dst_addresses
dp_list = prule.dst_ports
rule_uuid = prule.get_rule_uuid()
arule_proto = self.protocol_policy_to_acl(prule.protocol)
if arule_proto is None:
# TODO log unknown protocol
return result_acl_rule_list
if prule.action_list is None:
_sandesh._logger.error("No action specified in policy rule "
"attached to %s. Ignored.", self.name)
return result_acl_rule_list
for saddr in saddr_list:
saddr_match = copy.deepcopy(saddr)
svn = saddr.virtual_network
spol = saddr.network_policy
s_cidr = saddr.subnet
if svn == "local":
svn = self.name
saddr_match.virtual_network = self.name
for daddr in daddr_list:
daddr_match = copy.deepcopy(daddr)
dvn = daddr.virtual_network
dpol = daddr.network_policy
d_cidr = daddr.subnet
if dvn == "local":
dvn = self.name
daddr_match.virtual_network = self.name
if dvn in [self.name, 'any']:
remote_network_name = svn
elif svn in [self.name, 'any']:
remote_network_name = dvn
elif not dvn and dpol:
dp_obj = NetworkPolicyST.get(dpol)
if self.name in dp_obj.networks_back_ref:
remote_network_name = svn
daddr_match.network_policy = None
daddr_match.virtual_network = self.name
else:
_sandesh._logger.error("network policy rule attached to %s"
"has src = %s, dst = %s. Ignored.",
self.name, svn or spol, dvn or dpol)
continue
elif not svn and spol:
sp_obj = NetworkPolicyST.get(spol)
if self.name in sp_obj.networks_back_ref:
remote_network_name = dvn
daddr_match.network_policy = None
saddr_match.virtual_network = self.name
else:
_sandesh._logger.error("network policy rule attached to %s"
"has src = %s, dst = %s. Ignored.",
self.name, svn or spol, dvn or dpol)
continue
elif not svn and not dvn and not spol and not dpol and s_cidr and d_cidr:
if prule.action_list.apply_service: