/
vnc_ingress.py
542 lines (495 loc) · 22.2 KB
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vnc_ingress.py
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#
# Copyright (c) 2017 Juniper Networks, Inc. All rights reserved.
#
"""
VNC Ingress management for kubernetes
"""
import uuid
from config_db import *
from vnc_api.vnc_api import *
from kube_manager.common.kube_config_db import IngressKM
from kube_manager.vnc.loadbalancer import ServiceLbManager
from kube_manager.vnc.loadbalancer import ServiceLbListenerManager
from kube_manager.vnc.loadbalancer import ServiceLbPoolManager
from kube_manager.vnc.loadbalancer import ServiceLbMemberManager
class VncIngress(object):
def __init__(self, args=None, queue=None, vnc_lib=None,
label_cache=None, logger=None, kube=None):
self._name = type(self).__name__
self._args = args
self._queue = queue
self._vnc_lib = vnc_lib
self._logger = logger
self._kube = kube
self._vn_obj = None
self._service_subnet_uuid = None
self._fip_pool_obj = None
self.service_lb_mgr = ServiceLbManager(vnc_lib, logger)
self.service_ll_mgr = ServiceLbListenerManager(vnc_lib, logger)
self.service_lb_pool_mgr = ServiceLbPoolManager(vnc_lib, logger)
self.service_lb_member_mgr = ServiceLbMemberManager(vnc_lib, logger)
def _get_project(self, namespace):
proj_fq_name = ['default-domain', namespace]
try:
proj_obj = self._vnc_lib.project_read(fq_name=proj_fq_name)
except NoIdError:
self._logger.error("%s - %s Not Found" %(self._name, proj_fq_name))
return None
return proj_obj
def _get_network(self):
if self._vn_obj:
return self._vn_obj
vn_fq_name = ['default-domain', 'default', 'cluster-network']
try:
vn_obj = self._vnc_lib.virtual_network_read(fq_name=vn_fq_name)
except NoIdError:
self._logger.error("%s - %s Not Found" %(self._name, vn_fq_name))
return None
self._vn_obj = vn_obj
return vn_obj
def _get_service_subnet_uuid(self):
if self._service_subnet_uuid:
return self._service_subnet_uuid
service_subnet_uuid = None
vn_obj = self._get_network()
service_ipam_fq_name = ['default-domain', 'default', 'service-ipam']
ipam_refs = vn_obj.get_network_ipam_refs()
for ipam_ref in ipam_refs or []:
if ipam_ref['to'] == service_ipam_fq_name:
ipam_subnets = ipam_ref['attr'].get_ipam_subnets()
if not ipam_subnets:
continue
service_subnet_uuid = ipam_subnets[0].get_subnet_uuid()
break
if service_subnet_uuid is None:
self._logger.error("%s - %s Not Found" \
%(self._name, service_ipam_fq_name))
self._service_subnet_uuid = service_subnet_uuid
return service_subnet_uuid
def _get_public_fip_pool(self):
if self._fip_pool_obj:
return self._fip_pool_obj
fip_pool_fq_name = ['default-domain', 'default',
self._args.public_network_name,
self._args.public_fip_pool_name]
try:
fip_pool_obj = self._vnc_lib. \
floating_ip_pool_read(fq_name=fip_pool_fq_name)
except NoIdError:
self._logger.error("%s - %s Not Found" \
%(self._name, fip_pool_fq_name))
return None
self._fip_pool_obj = fip_pool_obj
return fip_pool_obj
def _get_floating_ip(self, name, proj_obj, vmi_obj=None):
fip_refs = vmi_obj.get_floating_ip_back_refs()
for ref in fip_refs or []:
fip = FloatingIpKM.get(ref['uuid'])
if fip:
return fip
else:
break
fip_pool = self._get_public_fip_pool()
if fip_pool is None:
return None
fip_obj = FloatingIp(name + "-public-ip", fip_pool)
fip_obj.set_project(proj_obj)
if vmi_obj:
fip_obj.set_virtual_machine_interface(vmi_obj)
self._vnc_lib.floating_ip_create(fip_obj)
fip = FloatingIpKM.locate(fip_obj.uuid)
return fip
def _allocate_floating_ip(self, lb_obj, name, proj_obj):
vmi_id = lb_obj.virtual_machine_interface_refs[0]['uuid']
vmi_obj = self._vnc_lib.virtual_machine_interface_read(id=vmi_id)
if vmi_obj is None:
self._logger.error("%s - %s Vmi %s Not Found" \
%(self._name, lb_obj.name, vmi_id))
return None
fip = self._get_floating_ip(name, proj_obj, vmi_obj)
return fip
def _deallocate_floating_ip(self, lb_obj):
vmi_id = lb_obj.virtual_machine_interfaces.pop()
vmi = VirtualMachineInterfaceKM.get(vmi_id)
if vmi is None:
self._logger.error("%s - %s Vmi %s Not Found" \
%(self._name, lb_obj.name, vmi_id))
return
fip_list = vmi.floating_ips.copy()
for fip_id in fip_list or []:
fip_obj = self._vnc_lib.floating_ip_read(id=fip_id)
fip_obj.set_virtual_machine_interface_list([])
self._vnc_lib.floating_ip_update(fip_obj)
self._vnc_lib.floating_ip_delete(id=fip_obj.uuid)
FloatingIpKM.delete(fip_obj.uuid)
def _vnc_create_member(self, pool, address, port, annotations):
pool_obj = self.service_lb_pool_mgr.read(pool.uuid)
member_obj = self.service_lb_member_mgr.create(pool_obj,
address, port, annotations)
return member_obj
def _vnc_update_member(self, member_id, address, port, annotations):
member_obj = self.service_lb_member_mgr.update(member_id,
address, port, annotations)
return member_obj
def _vnc_create_pool(self, namespace, ll, port, lb_algorithm, annotations):
proj_obj = self._get_project(namespace)
ll_obj = self.service_ll_mgr.read(ll.uuid)
pool_obj = self.service_lb_pool_mgr.create(ll_obj, proj_obj,
port, lb_algorithm, annotations)
return pool_obj
def _vnc_create_listeners(self, namespace, lb, port):
proj_obj = self._get_project(namespace)
lb_obj = self.service_lb_mgr.read(lb.uuid)
ll_obj = self.service_ll_mgr.create(lb_obj, proj_obj, port)
return ll_obj
def _vnc_create_lb(self, uid, name, namespace):
lb_provider = 'opencontrail'
lb_name = 'ingress' + '-' + name
proj_obj = self._get_project(namespace)
vn_obj = self._get_network()
if proj_obj is None or vn_obj is None:
return None
vip_address = None
service_subnet_uuid = self._get_service_subnet_uuid()
service_subnet_uuid = None
annotations = {}
annotations['device_owner'] = 'K8S:INGRESS'
lb_obj = self.service_lb_mgr.create(lb_provider, vn_obj,
uid, lb_name, proj_obj, vip_address,
service_subnet_uuid, annotations=annotations)
if lb_obj:
vip_info = {}
vip_info['clusterIP'] = lb_obj._loadbalancer_properties.vip_address
fip_obj = self._allocate_floating_ip(lb_obj, lb_name, proj_obj)
if fip_obj:
vip_info['externalIP'] = fip_obj.address
patch = {'metadata': {'annotations': vip_info}}
self._kube.patch_resource("ingresses", name,
patch, namespace, beta=True)
else:
self._logger.error("%s - %s LB Not Created" %(self._name, lb_name))
return lb_obj
def _vnc_delete_member(self, member_id):
self.service_lb_member_mgr.delete(member_id)
def _vnc_delete_pool(self, pool_id):
self.service_lb_pool_mgr.delete(pool_id)
def _vnc_delete_listener(self, ll_id):
self.service_ll_mgr.delete(ll_id)
def _vnc_delete_lb(self, lb_obj):
self._deallocate_floating_ip(lb_obj)
self.service_lb_mgr.delete(lb_obj.uuid)
def _get_old_backend_list(self, lb):
backend_list = []
listener_list = lb.loadbalancer_listeners
for ll_id in listener_list:
backend = {}
backend['listener_id'] = ll_id
ll = LoadbalancerListenerKM.get(ll_id)
pool_id = ll.loadbalancer_pool
if pool_id:
pool = LoadbalancerPoolKM.get(pool_id)
if pool.annotations is None:
annotations = {}
kvps = []
pool_obj = self._vnc_lib.loadbalancer_pool_read(id=pool_id)
pool_obj_kvp = pool_obj.annotations.key_value_pair
kvps_len = len(pool_obj_kvp)
for count in range(0, kvps_len):
kvp = {}
kvp['key'] = pool_obj_kvp[count].key
kvp['value'] = pool_obj_kvp[count].value
kvps.append(kvp)
annotations['key_value_pair'] = kvps
else:
annotations = pool.annotations
backend['pool_id'] = pool_id
backend['annotations'] = {}
for kvp in annotations['key_value_pair'] or []:
key = kvp['key']
value = kvp['value']
backend['annotations'][key] = value
backend['member'] = {}
if len(pool.members) == 0:
continue
member_id = list(pool.members)[0]
member = LoadbalancerMemberKM.get(member_id)
if member.annotations is None:
annotations = {}
kvps = []
member_obj = self._vnc_lib. \
loadbalancer_member_read(id=member_id)
member_obj_kvp = member_obj.annotations.key_value_pair
kvps_len = len(member_obj_kvp)
for count in range(0, kvps_len):
kvp = {}
kvp['key'] = member_obj_kvp[count].key
kvp['value'] = member_obj_kvp[count].value
kvps.append(kvp)
annotations['key_value_pair'] = kvps
else:
annotations = member.annotations
backend['member_id'] = member_id
protocol_port = member.params['protocol_port']
for kvp in annotations['key_value_pair'] or []:
if kvp['key'] == 'serviceName':
backend['member']['serviceName'] = kvp['value']
backend['member']['servicePort'] = protocol_port
break
backend_list.append(backend)
return backend_list
def _get_new_backend_list(self, spec):
backend_list = []
rules = []
if 'rules' in spec:
rules = spec['rules']
for rule in rules:
if 'http' not in rule:
continue
paths = rule['http']['paths']
for path in paths or []:
backend = {}
backend['annotations'] = {}
backend['member'] = {}
backend['protocol'] = 'HTTP'
if 'host' in rule:
backend['annotations']['host'] = rule['host']
if 'path' in path:
backend['annotations']['path'] = path['path']
service = path['backend']
backend['annotations']['type'] = 'acl'
backend['member']['serviceName'] = service['serviceName']
backend['member']['servicePort'] = service['servicePort']
backend_list.append(backend)
if 'backend' in spec:
service = spec['backend']
backend = {}
backend['annotations'] = {}
backend['member'] = {}
backend['protocol'] = 'HTTP'
backend['annotations']['type'] = 'default'
backend['member']['serviceName'] = service['serviceName']
backend['member']['servicePort'] = service['servicePort']
backend_list.append(backend)
return backend_list
def _create_member(self, namespace, backend_member, pool, listener_name):
resource_type = "services"
service_name = backend_member['serviceName']
service_port = backend_member['servicePort']
service_info = self._kube.get_resource(resource_type,
service_name, namespace)
if 'clusterIP' in service_info['spec']:
service_ip = service_info['spec']['clusterIP']
self._logger.debug("%s - clusterIP for service %s - %s" \
%(self._name, service_name, service_ip))
member_match = False
annotations = {}
annotations['serviceName'] = service_name
for member_id in pool.members:
member = LoadbalancerMemberKM.get(member_id)
if member and member.params['address'] == service_ip \
and member.params['protocol_port'] == service_port:
member_match = True
break
if not member_match:
member_obj = self._vnc_create_member(pool,
service_ip, service_port, annotations)
if member_obj:
member = LoadbalancerMemberKM.locate(member_obj.uuid)
else:
self._logger.error(
"%s - %s %s Member Not Created for listener" \
%(self._name, service_name,
str(service_port), listener_name))
else:
self._logger.error(
"%s - %s %s Member Not Created for listener" \
%(self._name, service_name,
str(service_port), listener_name))
return member
def _update_member(self, namespace, backend_member, pool):
member_id = backend_member['member_id']
new_service_name = backend_member['serviceName']
new_service_port = backend_member['servicePort']
member = LoadbalancerMemberKM.get(member_id)
annotations = member.annotations
for kvp in annotations['key_value_pair'] or []:
if kvp['key'] == 'serviceName':
old_service_name = kvp['value']
break
old_service_port = member.params['protocol_port']
if new_service_name != old_service_name:
service_info = self._kube.get_resource(resource_type,
new_service_name, namespace)
if 'clusterIP' in service_info['spec']:
service_ip = service_info['spec']['clusterIP']
else:
service_ip = member.params['address']
annotations = {}
annotations['serviceName'] = new_service_name
member_obj = self._vnc_update_member(member_id,
service_ip, new_service_port, annotations)
member = LoadbalancerMemberKM.update(member)
return member
def _create_pool(self, namespace, ll, port, lb_algorithm, annotations):
pool_id = ll.loadbalancer_pool
pool = LoadbalancerPoolKM.get(pool_id)
if pool is None:
pool_obj = self._vnc_create_pool(namespace, ll,
port, lb_algorithm, annotations)
pool_id = pool_obj.uuid
pool = LoadbalancerPoolKM.locate(pool_id)
else:
self._logger.error("%s - %s Pool Not Created" \
%(self._name, ll.name))
return pool
def _create_listener(self, namespace, lb, port):
ll_obj = self._vnc_create_listeners(namespace, lb, port)
if ll_obj:
ll = LoadbalancerListenerKM.locate(ll_obj.uuid)
else:
self._logger.error("%s - %s Listener for Port %s Not Created" \
%(self._name, lb.name, str(port)))
return ll
def _create_lb(self, uid, name, namespace, event):
lb = LoadbalancerKM.get(uid)
if not lb:
lb_obj = self._vnc_create_lb(uid, name, namespace)
if lb_obj is None:
return
lb = LoadbalancerKM.locate(uid)
spec = event['object']['spec']
new_backend_list = self._get_new_backend_list(spec)
old_backend_list = self._get_old_backend_list(lb)
# find the unchanged backends
for new_backend in new_backend_list[:] or []:
for old_backend in old_backend_list[:] or []:
if new_backend['annotations'] == old_backend['annotations'] \
and new_backend['member'] == old_backend['member']:
old_backend_list.remove(old_backend)
new_backend_list.remove(new_backend)
if len(old_backend_list) == 0 and len(new_backend_list) == 0:
return lb
# find the updated backends and update
backend_update_list = []
for new_backend in new_backend_list[:] or []:
for old_backend in old_backend_list[:] or []:
if new_backend['annotations'] == old_backend['annotations']:
backend = old_backend
backend['member']['member_id'] = \
old_backend['member_id']
backend['member']['serviceName'] = \
new_backend['member']['serviceName']
backend['member']['servicePort'] = \
new_backend['member']['servicePort']
backend_update_list.append(backend)
old_backend_list.remove(old_backend)
new_backend_list.remove(new_backend)
for backend in backend_update_list or []:
pool = LoadbalancerPoolKM.get(backend['pool_id'])
backend_member = backend['member']
self._update_member(namespace, backend_member, pool)
if len(old_backend_list) == 0 and len(new_backend_list) == 0:
return lb
# delete the old backends
for backend in old_backend_list or []:
self._delete_listener(backend['listener_id'])
# create the new backends
port = {}
lb_algorithm = "ROUND_ROBIN"
port['protocol'] = 'HTTP'
port['port'] = '80'
for backend in new_backend_list:
ll = self._create_listener(namespace, lb, port)
annotations = {}
for key in backend['annotations']:
annotations[key] = backend['annotations'][key]
port['protocol'] = backend['protocol']
pool = self._create_pool(namespace, ll, port, lb_algorithm, annotations)
backend_member = backend['member']
member = self._create_member(namespace, backend_member, pool, ll.name)
return lb
def _delete_all_listeners(self, lb):
listener_list = lb.loadbalancer_listeners.copy()
for ll_id in listener_list:
ll = LoadbalancerListenerKM.get(ll_id)
pool_id = ll.loadbalancer_pool
if pool_id:
pool = LoadbalancerPoolKM.get(pool_id)
member_list = pool.members.copy()
for member_id in member_list:
self._vnc_delete_member(member_id)
LoadbalancerMemberKM.delete(member_id)
self._vnc_delete_pool(pool_id)
LoadbalancerPoolKM.delete(pool_id)
self._vnc_delete_listener(ll_id)
LoadbalancerListenerKM.delete(ll_id)
def _delete_listener(self, ll_id):
ll = LoadbalancerListenerKM.get(ll_id)
pool_id = ll.loadbalancer_pool
if pool_id:
pool = LoadbalancerPoolKM.get(pool_id)
member_list = pool.members.copy()
for member_id in member_list:
self._vnc_delete_member(member_id)
LoadbalancerMemberKM.delete(member_id)
self._vnc_delete_pool(pool_id)
LoadbalancerPoolKM.delete(pool_id)
self._vnc_delete_listener(ll_id)
LoadbalancerListenerKM.delete(ll_id)
def _delete_lb(self, uid):
lb_obj = LoadbalancerKM.get(uid)
if not lb_obj:
return
self._delete_all_listeners(lb_obj)
self._vnc_delete_lb(lb_obj)
LoadbalancerKM.delete(uid)
def _update_ingress(self, name, uid, event):
namespace = event['object']['metadata'].get('namespace')
self._create_lb(uid, name, namespace, event)
def _delete_ingress(self, uid):
self._delete_lb(uid)
def _create_ingress_event(self, event_type, ingress_id, lb):
event = {}
object = {}
object['kind'] = 'Ingress'
object['spec'] = {}
object['metadata'] = {}
object['metadata']['uid'] = ingress_id
if event_type == 'delete':
event['type'] = 'DELETED'
event['object'] = object
self._queue.put(event)
return
def _sync_ingress_lb(self):
lb_uuid_list = list(LoadbalancerKM.keys())
ingress_uuid_list = list(IngressKM.keys())
for uuid in lb_uuid_list:
if uuid in ingress_uuid_list:
continue
lb = LoadbalancerKM.get(uuid)
if not lb:
continue
if not lb.annotations:
continue
for kvp in lb.annotations['key_value_pair'] or []:
if kvp['key'] == 'device_owner' \
and kvp['value'] == 'K8S:INGRESS':
self._create_ingress_event('delete', uuid, lb)
break
return
def ingress_timer(self):
self._sync_ingress_lb()
def process(self, event):
event_type = event['type']
kind = event['object'].get('kind')
name = event['object']['metadata'].get('name')
uid = event['object']['metadata'].get('uid')
namespace = event['object']['metadata'].get('namespace')
print("%s - Got %s %s %s:%s"
%(self._name, event_type, kind, namespace, name))
self._logger.debug("%s - Got %s %s %s:%s"
%(self._name, event_type, kind, namespace, name))
if event['type'] == 'ADDED' or event['type'] == 'MODIFIED':
self._update_ingress(name, uid, event)
elif event['type'] == 'DELETED':
self._delete_ingress(uid)