def debug(cls, _, __, ___):
config = load_service_config('pipelined')
qos_impl_type = QosImplType(config["qos"]["impl"])
qos_store = QosStore(cls.__name__)
for k, v in qos_store.items():
_, imsi, ip_addr, rule_num, d = get_key(k)
_, qid, ambr, leaf = get_data(v)
print('imsi :', imsi)
print('ip_addr :', ip_addr)
print('rule_num :', rule_num)
print('direction :', d)
print('qos_handle:', qid)
print('qos_handle_ambr:', ambr)
print('qos_handle_ambr_leaf:', leaf)
if qos_impl_type == QosImplType.OVS_METER:
MeterManager.dump_meter_state(v)
else:
intf = 'nat_iface' if d == FlowMatch.UPLINK else 'enodeb_iface'
print("Dev: ", config[intf])
TrafficClass.dump_class_state(config[intf], qid)
if leaf and leaf != qid:
print("Leaf:")
TrafficClass.dump_class_state(config[intf], leaf)
if ambr:
print("AMBR (parent):")
TrafficClass.dump_class_state(config[intf], ambr)
def debug(cls, _, __, ___):
config = load_service_config('pipelined')
qos_impl_type = QosImplType(config["qos"]["impl"])
qos_store = QosStore(cls.__name__, client=get_default_client())
for k, v in qos_store.items():
_, imsi, ip_addr, rule_num, d = get_key(k)
_, qid, ambr, leaf = get_data(v)
print('imsi :', imsi)
print('ip_addr :', ip_addr)
print('rule_num :', rule_num)
print('direction :', d)
print('qos_handle:', qid)
print('qos_handle_ambr:', ambr)
print('qos_handle_ambr_leaf:', leaf)
if qos_impl_type == QosImplType.OVS_METER:
MeterManager.dump_meter_state(v)
else:
dev = config[
'nat_iface'] if d == FlowMatch.UPLINK else 'gtpu_sys_2152'
print("Dev: ", dev)
TrafficClass.dump_class_state(dev, qid)
if leaf and leaf != qid:
print("Leaf:")
TrafficClass.dump_class_state(dev, leaf)
if ambr:
print("AMBR (parent):")
TrafficClass.dump_class_state(dev, ambr)
if qos_impl_type == QosImplType.LINUX_TC:
dev = config['nat_iface']
print("Root stats for: ", dev)
TrafficClass.dump_root_class_stats(dev)
dev = 'gtpu_sys_2152'
print("Root stats for: ", dev)
TrafficClass.dump_root_class_stats(dev)
def get_qos_handle(self, rule_num: int, direction: FlowMatch.Direction) -> int:
rule = self.rules.get(rule_num)
if rule:
for d, qos_data in rule:
if d == direction:
_, qid, _, _ = get_data(qos_data)
return qid
return 0
def testApnAmbrSanity(
self,
mock_tc_get_action_inst,
mock_traffic_cls,
):
""" This test verifies that qos configuration gets programmed correctly
for addition and deletion of a single subscriber and a single rule,
We additionally verify if the clean_restart wipes out everything """
self.config["qos"]["impl"] = QosImplType.LINUX_TC
# mock unclean state in qos
prior_qids = {self.ul_intf: [(2, 0)], self.dl_intf: [(3, 0)]}
mock_traffic_cls.read_all_classes.side_effect = lambda intf: prior_qids[intf]
qos_mgr = QosManager(MagicMock, asyncio.new_event_loop(), self.config)
qos_mgr._redis_store = {}
qos_mgr._setupInternal()
ambr_ul, ambr_dl = 250000, 500000
imsi, ip_addr, rule_num, qos_info = ("1234", '1.1.1.1', 1, QosInfo(50000, 100000))
# add new subscriber qos queue
qos_mgr.add_subscriber_qos(imsi, ip_addr, ambr_ul, rule_num, FlowMatch.UPLINK, qos_info)
qos_mgr.add_subscriber_qos(imsi, ip_addr, ambr_dl, rule_num, FlowMatch.DOWNLINK, qos_info)
k1 = get_key_json(get_subscriber_key(imsi, ip_addr, rule_num, FlowMatch.UPLINK))
k2 = get_key_json(get_subscriber_key(imsi, ip_addr, rule_num, FlowMatch.DOWNLINK))
ambr_ul_exp_id = qos_mgr.impl._start_idx
ul_exp_id = qos_mgr.impl._start_idx + 2
ambr_dl_exp_id = qos_mgr.impl._start_idx + 3
dl_exp_id = qos_mgr.impl._start_idx + 5
qid_info_ul = get_subscriber_data(ul_exp_id, ul_exp_id - 2, ul_exp_id - 1)
qid_info_dl = get_subscriber_data(dl_exp_id, dl_exp_id - 2, dl_exp_id - 1)
self.assertEqual(get_data(qos_mgr._redis_store[k1]), qid_info_ul)
self.assertEqual(get_data(qos_mgr._redis_store[k2]), qid_info_dl)
self.assertTrue(qos_mgr._subscriber_state[imsi].rules[rule_num][0] == (0, get_data_json(qid_info_ul)))
self.assertTrue(qos_mgr._subscriber_state[imsi].rules[rule_num][1] == (1, get_data_json(qid_info_dl)))
self.assertEqual(len(qos_mgr._subscriber_state[imsi].sessions), 1)
self.assertEqual(qos_mgr._subscriber_state[imsi].sessions[ip_addr].ambr_dl, ambr_dl_exp_id)
self.assertEqual(qos_mgr._subscriber_state[imsi].sessions[ip_addr].ambr_dl_leaf, ambr_dl_exp_id + 1)
self.assertEqual(qos_mgr._subscriber_state[imsi].sessions[ip_addr].ambr_ul_leaf, ambr_ul_exp_id + 1)
# add the same subscriber and ensure that we didn't create another
# qos config for the subscriber
qos_mgr.add_subscriber_qos(imsi, ip_addr, 0, rule_num, FlowMatch.UPLINK, qos_info)
qos_mgr.add_subscriber_qos(imsi, ip_addr, 0, rule_num, FlowMatch.DOWNLINK, qos_info)
self.assertTrue(qos_mgr._subscriber_state[imsi].rules[rule_num][0] == (0, get_data_json(qid_info_ul)))
self.assertTrue(qos_mgr._subscriber_state[imsi].rules[rule_num][1] == (1, get_data_json(qid_info_dl)))
# verify if traffic class was invoked properly
self.verifyTcAddQos(
mock_tc_get_action_inst, mock_traffic_cls, FlowMatch.UPLINK,
ul_exp_id, qos_info, parent_qid=ambr_ul_exp_id,
)
self.verifyTcAddQos(
mock_tc_get_action_inst, mock_traffic_cls, FlowMatch.DOWNLINK,
dl_exp_id, qos_info, parent_qid=ambr_dl_exp_id,
)
self.verifyTcCleanRestart(prior_qids, mock_traffic_cls)
# remove the subscriber qos and verify things are cleaned up
qos_mgr.remove_subscriber_qos(imsi, rule_num)
self.assertTrue(len(qos_mgr._redis_store) == 0)
self.assertTrue(imsi not in qos_mgr._subscriber_state)
self.verifyTcRemoveQos(mock_traffic_cls, FlowMatch.UPLINK, ambr_ul_exp_id, True)
self.verifyTcRemoveQos(mock_traffic_cls, FlowMatch.UPLINK, ul_exp_id)
self.verifyTcRemoveQos(mock_traffic_cls, FlowMatch.DOWNLINK, ambr_dl_exp_id, True)
self.verifyTcRemoveQos(mock_traffic_cls, FlowMatch.DOWNLINK, dl_exp_id)
def _testUncleanRestartWithApnAMBR(self, mock_meter_cls, mock_traffic_cls):
"""This test verifies all tests cases from _testUncleanRestart for APN
AMBR configs.
"""
loop = asyncio.new_event_loop()
qos_mgr = QosManager(MagicMock, loop, self.config)
qos_mgr._redis_store = {}
def populate_db(qid_list, old_ambr_list, old_leaf_list, rule_list):
qos_mgr._redis_store.clear()
for i, t in enumerate(rule_list):
k = get_key_json(get_subscriber_key(*t))
v = get_data_json(
get_subscriber_data(
qid_list[i],
old_ambr_list[i],
old_leaf_list[i],
),
)
qos_mgr._redis_store[k] = v
MockSt = namedtuple("MockSt", "meter_id")
dummy_meter_ev_body = [MockSt(11), MockSt(13), MockSt(2), MockSt(15)]
def tc_read(intf):
if intf == self.ul_intf:
return [
(30, 3000), (15, 1500),
(300, 3000), (150, 1500),
(3000, 65534), (1500, 65534),
]
else:
return [
(13, 1300), (11, 1100),
(130, 1300), (110, 1100),
(1300, 65534), (1100, 65534),
]
# prepopulate qos_store
old_qid_list = [2, 11, 13, 30]
old_leaf_list = [20, 110, 130, 300]
old_ambr_list = [200, 1100, 1300, 3000]
old_rule_list = [
("1", '1.1.1.1', 0, 0), ("1", '1.1.1.2', 1, 0),
("1", '1.1.1.3', 2, 1), ("2", '1.1.1.4', 0, 0),
]
populate_db(old_qid_list, old_ambr_list, old_leaf_list, old_rule_list)
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
qos_mgr.impl.handle_meter_config_stats(dummy_meter_ev_body)
else:
mock_traffic_cls.read_all_classes.side_effect = tc_read
qos_mgr._initialized = False
qos_mgr._setupInternal()
# verify that qos_handle 20 not found in system is purged from map
qid_list = []
for _, v in qos_mgr._redis_store.items():
_, qid, _, _ = get_data(v)
qid_list.append(qid)
logging.debug("qid_list %s", qid_list)
self.assertNotIn(20, qid_list)
# verify that unreferenced qos configs are purged from the system
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_called_with(MagicMock, 15)
else:
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 15, False)
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 150, False)
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 1500, True)
# add a new rule to the qos_mgr and check if it is assigned right id
imsi, rule_num, d, qos_info = "3", 0, 0, QosInfo(100000, 100000)
qos_mgr.impl.get_action_instruction = MagicMock
qos_mgr.add_subscriber_qos(imsi, '', 10, rule_num, d, qos_info)
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
exp_id = 3 # since start_idx 2 is already used
d3 = get_data_json(get_subscriber_data(exp_id + 1, exp_id - 1, exp_id))
self.assertEqual(qos_mgr._redis_store[k], d3)
self.assertEqual(qos_mgr._subscriber_state[imsi].rules[rule_num][0], (d, d3))
# delete the restored rule - ensure that it gets cleaned properly
purge_imsi = "1"
purge_rule_num = 1
purge_qos_handle = 2
qos_mgr.remove_subscriber_qos(purge_imsi, purge_rule_num)
self.assertTrue(purge_rule_num not in qos_mgr._subscriber_state[purge_imsi].rules)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_called_with(MagicMock, purge_qos_handle)
else:
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 11, False)
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 110, False)
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 1100, True)
# case 2 - check with empty qos configs, qos_map gets purged
mock_meter_cls.reset_mock()
mock_traffic_cls.reset_mock()
populate_db(old_qid_list, old_ambr_list, old_leaf_list, old_rule_list)
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
MockSt = namedtuple("MockSt", "meter_id")
qos_mgr.impl._fut = loop.create_future()
qos_mgr.impl.handle_meter_config_stats([])
else:
mock_traffic_cls.read_all_classes.side_effect = lambda _: []
qos_mgr._initialized = False
qos_mgr._setupInternal()
self.assertTrue(not qos_mgr._redis_store)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_not_called()
else:
mock_traffic_cls.delete_class.assert_not_called()
# case 3 - check with empty qos_map, all qos configs get purged
mock_meter_cls.reset_mock()
mock_traffic_cls.reset_mock()
qos_mgr._redis_store.clear()
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
qos_mgr.impl._fut = loop.create_future()
qos_mgr.impl.handle_meter_config_stats(dummy_meter_ev_body)
else:
mock_traffic_cls.read_all_classes.side_effect = tc_read
logging.debug("case three")
qos_mgr._initialized = False
qos_mgr._setupInternal()
self.assertTrue(not qos_mgr._redis_store)
# verify that unreferenced qos configs are purged from the system
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_any_call(MagicMock, 2)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 15)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 13)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 11)
else:
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 15, False)
mock_traffic_cls.delete_class.assert_any_call(self.ul_intf, 150, False)
mock_traffic_cls.delete_class.assert_any_call(self.dl_intf, 13, False)
mock_traffic_cls.delete_class.assert_any_call(self.dl_intf, 130, False)
mock_traffic_cls.delete_class.assert_any_call(self.dl_intf, 11, False)
mock_traffic_cls.delete_class.assert_any_call(self.dl_intf, 110, False)
def _testMultipleSubscribers(
self,
mock_meter_get_action_inst,
mock_tc_get_action_inst,
mock_meter_cls,
mock_traffic_cls,
):
""" This test verifies that qos configuration gets programmed correctly
for addition and deletion of a multiple subscribers and rules.
we additionally run through different scenarios involving
- deactivating a rule
- deactivating a subscriber
- creating gaps in deletion and verifying that new qos configs get
programmed properly with appropriate qids
- additionally we also verify the idempotency of deletion calls
and ensure that code doesn't behave incorrectly when same items are
deleted multiple times
- Finally we delete everything and verify if that behavior is right"""
if self.config["qos"]["impl"] == QosImplType.LINUX_TC:
mock_traffic_cls.read_all_classes.side_effect = lambda intf: []
mock_traffic_cls.delete_class.side_effect = lambda *args: 0
qos_mgr = QosManager(MagicMock, asyncio.new_event_loop(), self.config)
qos_mgr._redis_store = {}
qos_mgr._setupInternal()
rule_list1 = [
("1", 0, 0),
("1", 1, 0),
("1", 2, 1),
("2", 0, 0),
]
rule_list2 = [
("2", 1, 0),
("3", 0, 0),
("4", 0, 0),
("5", 0, 0),
("5", 1, 1),
("6", 0, 0),
]
start_idx, end_idx = 2, 2 + len(rule_list1)
id_list = list(range(start_idx, end_idx))
qos_info = QosInfo(100000, 100000)
exp_id_dict = {}
# add new subscriber qos queues
for i, (imsi, rule_num, d) in enumerate(rule_list1):
qos_mgr.add_subscriber_qos(imsi, '', 0, rule_num, d, qos_info)
exp_id = id_list[i]
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
exp_id_dict[k] = exp_id
# self.assertTrue(qos_mgr._redis_store[k] == exp_id)
qid_info = get_data_json(get_subscriber_data(exp_id, 0, 0))
self.assertEqual(qos_mgr._subscriber_state[imsi].rules[rule_num][0], (d, qid_info))
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterAddQos(
mock_meter_get_action_inst, mock_meter_cls, d, exp_id, qos_info,
)
else:
self.verifyTcAddQos(
mock_tc_get_action_inst, mock_traffic_cls, d, exp_id, qos_info,
)
# deactivate one rule
# verify for imsi1 if rule num 0 gets cleaned up
imsi, rule_num, d = rule_list1[0]
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
exp_id = exp_id_dict[k]
qos_mgr.remove_subscriber_qos(imsi, rule_num)
self.assertTrue(k not in qos_mgr._redis_store)
self.assertTrue(not qos_mgr._subscriber_state[imsi].find_rule(rule_num))
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterRemoveQos(mock_meter_cls, d, exp_id)
else:
self.verifyTcRemoveQos(mock_traffic_cls, d, exp_id)
# deactivate same rule and check if we log properly
with self.assertLogs("pipelined.qos.common", level="DEBUG") as cm:
qos_mgr.remove_subscriber_qos(imsi, rule_num)
error_msg = "unable to find rule_num 0 for imsi 1"
self.assertTrue(cm.output[1].endswith(error_msg))
# deactivate imsi
# verify for imsi1 if rule num 1 and 2 gets cleaned up
qos_mgr.remove_subscriber_qos(imsi)
remove_qos_args = []
for imsi, rule_num, d in rule_list1[1:]:
if imsi != "1":
continue
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
exp_id = exp_id_dict[k]
self.assertTrue(k not in qos_mgr._redis_store)
remove_qos_args.append((d, exp_id))
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterRemoveQosBulk(mock_meter_cls, remove_qos_args)
else:
self.verifyTcRemoveQosBulk(mock_traffic_cls, remove_qos_args)
self.assertTrue("1" not in qos_mgr._subscriber_state)
# deactivate same imsi again and ensure nothing bad happens
logging.debug("removing qos")
with self.assertLogs("pipelined.qos.common", level="DEBUG") as cm:
qos_mgr.remove_subscriber_qos("1")
logging.debug("removing qos: done")
error_msg = "imsi 1 not found"
self.assertTrue(error_msg in cm.output[-1])
# now only imsi2 should remain
assert(len(qos_mgr._subscriber_state) == 1)
assert(len(qos_mgr._subscriber_state['2'].rules) == 1)
assert(len(qos_mgr._subscriber_state['2'].rules[0]) == 1)
existing_qid = qos_mgr._subscriber_state['2'].rules[0][0][1]
_, existing_qid, _, _ = get_data(existing_qid)
# add second rule list and delete and verify if things work
qos_info = QosInfo(100000, 200000)
# additional 1 is for accomodating the existing imsi2RuleList1Qid
start_idx, end_idx = 2, 2 + len(rule_list2) + 1
id_list = [i for i in range(start_idx, end_idx) if i != existing_qid]
# add new subscriber qos queues
for i, (imsi, rule_num, d) in enumerate(rule_list2):
qos_mgr.add_subscriber_qos(imsi, '', 0, rule_num, d, qos_info)
exp_id = id_list[i]
qid_info = get_data_json(get_subscriber_data(exp_id, 0, 0))
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
self.assertEqual(qos_mgr._redis_store[k], qid_info)
self.assertEqual(qos_mgr._subscriber_state[imsi].rules[rule_num][0], (d, qid_info))
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterAddQos(
mock_meter_get_action_inst, mock_meter_cls, d, exp_id, qos_info,
)
else:
self.verifyTcAddQos(
mock_tc_get_action_inst, mock_traffic_cls, d, exp_id, qos_info,
)
# delete the subscriber qos queues
for i, (imsi, rule_num, d) in enumerate(rule_list2):
qos_mgr.remove_subscriber_qos(imsi, rule_num)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterRemoveQos(mock_meter_cls, d, id_list[i])
else:
self.verifyTcRemoveQos(mock_traffic_cls, d, id_list[i])
self.assertTrue(len(qos_mgr._subscriber_state) == 1)
self.assertTrue('2' in qos_mgr._subscriber_state)
# delete everything
qos_mgr.remove_subscriber_qos(imsi='2')
# imsi2 from rule_list1 alone wasn't removed
imsi, rule_num, d = rule_list1[3]
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
self.assertTrue(not qos_mgr._redis_store)
self.assertTrue(not qos_mgr._subscriber_state)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
self.verifyMeterRemoveQos(mock_meter_cls, d, existing_qid)
else:
self.verifyTcRemoveQos(mock_traffic_cls, d, existing_qid)
def _testUncleanRestart(self, mock_meter_cls, mock_traffic_cls):
"""This test verifies the case when we recover the state upon
restart. We verify the base case of reconciling differences
between system qos configs and qos_store configs(real code uses
redis hash, we simply use dict). Additionally we test cases when
system qos configs were wiped out and qos store state was wiped out
and ensure that eventually the system and qos store state remains
consistent"""
loop = asyncio.new_event_loop()
qos_mgr = QosManager(loop, self.config, fakeredis.FakeStrictRedis())
qos_mgr.init_impl(MagicMock)
qos_mgr._redis_store = {}
def populate_db(qid_list, rule_list):
qos_mgr._redis_store.clear()
for i, t in enumerate(rule_list):
k = get_key_json(get_subscriber_key(*t))
v = get_data_json(get_subscriber_data(qid_list[i], 0, 0))
qos_mgr._redis_store[k] = v
MockSt = namedtuple("MockSt", "meter_id")
dummy_meter_ev_body = [MockSt(11), MockSt(13), MockSt(2), MockSt(15)]
def tc_read(intf):
if intf == self.ul_intf:
return [(2, 65534), (15, 65534)]
else:
return [(13, 65534), (11, 65534)]
# prepopulate qos_store
old_qid_list = [2, 11, 13, 20]
old_rule_list = [
("1", '1.1.1.1', 0, 0),
("1", '1.1.1.2', 1, 0),
("1", '1.1.1.3', 2, 1),
("2", '1.1.1.4', 0, 0),
]
populate_db(old_qid_list, old_rule_list)
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
qos_mgr.impl.handle_meter_config_stats(dummy_meter_ev_body)
else:
mock_traffic_cls.read_all_classes.side_effect = tc_read
qos_mgr._initialized = False
qos_mgr._setupInternal()
# verify that qos_handle 20 not found in system is purged from map
qid_list = []
for _, v in qos_mgr._redis_store.items():
_, qid, _, _ = get_data(v)
qid_list.append(qid)
logging.debug("qid_list %s", qid_list)
self.assertNotIn(20, qid_list)
# verify that unreferenced qos configs are purged from the system
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_called_with(MagicMock, 15)
else:
mock_traffic_cls.delete_class.assert_called_with(
self.ul_intf, 15, False)
# add a new rule to the qos_mgr and check if it is assigned right id
imsi, rule_num, d, qos_info = "3", 0, 0, QosInfo(100000, 100000)
qos_mgr.impl.get_action_instruction = MagicMock
qos_mgr.add_subscriber_qos(imsi, '', 0, rule_num, d, qos_info)
k = get_key_json(get_subscriber_key(imsi, '', rule_num, d))
exp_id = 3 # since start_idx 2 is already used
d3 = get_data_json(get_subscriber_data(exp_id, 0, 0))
self.assertEqual(qos_mgr._redis_store[k], d3)
self.assertEqual(qos_mgr._subscriber_state[imsi].rules[rule_num][0],
(d, d3))
# delete the restored rule - ensure that it gets cleaned properly
purge_imsi = "1"
purge_rule_num = 0
purge_qos_handle = 2
qos_mgr.remove_subscriber_qos(purge_imsi, purge_rule_num)
self.assertTrue(
purge_rule_num not in qos_mgr._subscriber_state[purge_imsi].rules)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_called_with(
MagicMock, purge_qos_handle)
else:
mock_traffic_cls.delete_class.assert_called_with(
self.ul_intf,
purge_qos_handle,
False,
)
# case 2 - check with empty qos configs, qos_map gets purged
mock_meter_cls.reset_mock()
mock_traffic_cls.reset_mock()
populate_db(old_qid_list, old_rule_list)
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
MockSt = namedtuple("MockSt", "meter_id")
qos_mgr.impl._fut = loop.create_future()
qos_mgr.impl.handle_meter_config_stats([])
else:
mock_traffic_cls.read_all_classes.side_effect = lambda _: []
qos_mgr._initialized = False
qos_mgr._setupInternal()
self.assertTrue(not qos_mgr._redis_store)
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_not_called()
else:
mock_traffic_cls.delete_class.assert_not_called()
# case 3 - check with empty qos_map, all qos configs get purged
mock_meter_cls.reset_mock()
mock_traffic_cls.reset_mock()
qos_mgr._redis_store.clear()
# mock future state
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
qos_mgr.impl._fut = loop.create_future()
qos_mgr.impl.handle_meter_config_stats(dummy_meter_ev_body)
else:
mock_traffic_cls.read_all_classes.side_effect = tc_read
qos_mgr._initialized = False
qos_mgr._setupInternal()
self.assertTrue(not qos_mgr._redis_store)
# verify that unreferenced qos configs are purged from the system
if self.config["qos"]["impl"] == QosImplType.OVS_METER:
mock_meter_cls.del_meter.assert_any_call(MagicMock, 2)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 15)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 13)
mock_meter_cls.del_meter.assert_any_call(MagicMock, 11)
else:
mock_traffic_cls.delete_class.assert_any_call(
self.ul_intf, 2, False)
mock_traffic_cls.delete_class.assert_any_call(
self.ul_intf, 15, False)
mock_traffic_cls.delete_class.assert_any_call(
self.dl_intf, 13, False)
mock_traffic_cls.delete_class.assert_any_call(
self.dl_intf, 11, False)
def remove_subscriber_qos(self, imsi: str = "", rule_num: int = -1):
if not self._qos_enabled or not self._initialized:
LOG.debug("remove_subscriber_qos: not enabled or initialized")
return
LOG.debug("removing Qos for imsi %s rule_num %d", imsi, rule_num)
if not imsi:
LOG.error('imsi %s invalid, failed removing', imsi)
return
imsi = normalize_imsi(imsi)
subscriber_state = self._subscriber_state.get(imsi)
if not subscriber_state:
LOG.debug('imsi %s not found, nothing to remove ', imsi)
return
to_be_deleted_rules = set()
if rule_num == -1:
# deleting all rules for the subscriber
rules = subscriber_state.get_all_rules()
for (rule_num, rule) in rules.items():
session_with_rule = subscriber_state.find_session_with_rule(
rule_num)
for (d, qos_data) in rule:
_, qid, _, leaf = get_data(qos_data)
if session_with_rule.get_ambr(d) != qid:
self.impl.remove_qos(qid, d)
to_be_deleted_rules.add(rule_num)
else:
rule = subscriber_state.find_rule(rule_num)
if rule:
session_with_rule = subscriber_state.find_session_with_rule(
rule_num)
for (d, qos_data) in rule:
_, qid, _, leaf = get_data(qos_data)
if session_with_rule.get_ambr(d) != qid:
self.impl.remove_qos(qid, d)
if leaf and leaf != qid:
self.impl.remove_qos(leaf, d)
LOG.debug("removing rule %s %s ", imsi, rule_num)
to_be_deleted_rules.add(rule_num)
else:
LOG.debug("unable to find rule_num %d for imsi %s", rule_num,
imsi)
for rule_num in to_be_deleted_rules:
subscriber_state.remove_rule(rule_num)
# purge sessions with no rules
for session in subscriber_state.get_all_empty_sessions():
for d in (FlowMatch.UPLINK, FlowMatch.DOWNLINK):
ambr_qos_handle = session.get_ambr(d)
if ambr_qos_handle:
LOG.debug("removing root ambr qos handle %d direction %d",
ambr_qos_handle, d)
self.impl.remove_qos(ambr_qos_handle, d, skip_filter=True)
LOG.debug("purging session %s %s ", imsi, session.ip_addr)
subscriber_state.remove_session(session.ip_addr)
# purge subscriber state with no rules
if subscriber_state.check_empty():
LOG.debug(
"purging subscriber state for %s, empty rules and sessions",
imsi)
del self._subscriber_state[imsi]
def _setupInternal(self):
if self._initialized:
return
if self._clean_restart:
LOG.info("Qos Setup: clean start")
self.impl.destroy()
self._redis_store.clear()
self.impl.setup()
self._initialized = True
else:
# read existing state from qos_impl
LOG.info("Qos Setup: recovering existing state")
self.impl.setup()
cur_qos_state, apn_qid_list = self.impl.read_all_state()
LOG.debug("Initial qos_state -> %s",
json.dumps(cur_qos_state, indent=1))
LOG.debug("apn_qid_list -> %s", apn_qid_list)
LOG.debug("Redis state: %s", self._redis_store)
try:
# populate state from db
in_store_qid = set()
in_store_ambr_qid = set()
purge_store_set = set()
for rule, sub_data in self._redis_store.items():
_, qid, ambr, leaf = get_data(sub_data)
if qid not in cur_qos_state:
LOG.warning("missing qid: %s in TC", qid)
purge_store_set.add(rule)
continue
if ambr and ambr != 0 and ambr not in cur_qos_state:
purge_store_set.add(rule)
LOG.warning("missing ambr class: %s of qid %d", ambr,
qid)
continue
if leaf and leaf != 0 and leaf not in cur_qos_state:
purge_store_set.add(rule)
LOG.warning("missing leaf class: %s of qid %d", leaf,
qid)
continue
if ambr:
qid_state = cur_qos_state[qid]
if qid_state['ambr_qid'] != ambr:
purge_store_set.add(rule)
LOG.warning(
"Inconsistent amber class: %s of qid %d",
qid_state['ambr_qid'], ambr)
continue
in_store_qid.add(qid)
if ambr:
in_store_qid.add(ambr)
in_store_ambr_qid.add(ambr)
in_store_qid.add(leaf)
_, imsi, ip_addr, rule_num, direction = get_key(rule)
subscriber = self.get_or_create_subscriber(imsi)
subscriber.update_rule(ip_addr, rule_num, direction, qid,
ambr, leaf)
session = subscriber.get_or_create_session(ip_addr)
session.set_ambr(direction, ambr, leaf)
# purge entries from qos_store
for rule in purge_store_set:
LOG.debug("purging qos_store entry %s", rule)
del self._redis_store[rule]
# purge unreferenced qos configs from system
# Step 1. Delete child nodes
lost_and_found_apn_list = set()
for qos_handle in cur_qos_state:
if qos_handle not in in_store_qid:
if qos_handle in apn_qid_list:
lost_and_found_apn_list.add(qos_handle)
else:
LOG.debug("removing qos_handle %d", qos_handle)
self.impl.remove_qos(
qos_handle,
cur_qos_state[qos_handle]['direction'],
recovery_mode=True)
if len(lost_and_found_apn_list) > 0:
# Step 2. delete qos ambr without any leaf nodes
for qos_handle in lost_and_found_apn_list:
if qos_handle not in in_store_ambr_qid:
LOG.debug("removing apn qos_handle %d", qos_handle)
self.impl.remove_qos(
qos_handle,
cur_qos_state[qos_handle]['direction'],
recovery_mode=True,
skip_filter=True)
final_qos_state, _ = self.impl.read_all_state()
LOG.info("final_qos_state -> %s",
json.dumps(final_qos_state, indent=1))
LOG.info("final_redis state -> %s", self._redis_store)
except Exception as e: # pylint: disable=broad-except
# in case of any exception start clean slate
LOG.error("error %s. restarting clean %s", e,
traceback.format_exc())
self._clean_restart = True
self._initialized = True
