def test_vpcalloc_rollback(self):
nexus_ips = ['1.1.1.1', '2.2.2.2', '3.3.3.3']
for this_ip in nexus_ips:
nexus_db_v2.init_vpc_entries(this_ip,
self._make_vpc_list(1001, 1025))
nexus_db_v2.update_vpc_entry(nexus_ips, 1001, False, True)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('1.1.1.1')
self.assertEqual(len(allocs), 24)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('2.2.2.2')
self.assertEqual(len(allocs), 24)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('3.3.3.3')
self.assertEqual(len(allocs), 24)
nexus_db_v2.update_vpc_entry(nexus_ips, 1001, False, False)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('1.1.1.1')
self.assertEqual(len(allocs), 25)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('2.2.2.2')
self.assertEqual(len(allocs), 25)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('3.3.3.3')
self.assertEqual(len(allocs), 25)
nexus_db_v2.update_vpc_entry(['3.3.3.3'], 1001, False, True)
try:
nexus_db_v2.update_vpc_entry(nexus_ips, 1001, False, True)
except exceptions.NexusVPCAllocNotFound:
allocs = nexus_db_v2.get_free_switch_vpc_allocs('1.1.1.1')
self.assertEqual(len(allocs), 25)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('2.2.2.2')
self.assertEqual(len(allocs), 25)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('3.3.3.3')
self.assertEqual(len(allocs), 24)
def test_vpcalloc_test_alloc_collision(self):
def new_get_free_vpcids_on_switches(nexus_ips):
results = nexus_db_v2.get_free_switch_vpc_allocs('4.4.4.4')
return results
nexus_ips = ['1.1.1.1', '2.2.2.2', '3.3.3.3']
for this_ip in nexus_ips:
nexus_db_v2.init_vpc_entries(this_ip,
self._make_vpc_list(1001, 1025))
# IP 4.4.4.4 is added only to return a list of vpc ids
# in same format as sql will return.
nexus_db_v2.init_vpc_entries('4.4.4.4',
self._make_vpc_list(1001, 1003))
mock.patch.object(nexus_db_v2,
'_get_free_vpcids_on_switches',
new=new_get_free_vpcids_on_switches).start()
# configure '3.3.3.3', vpcid 1001 so alloc_vpcid will fail
# on 1001 after updating 1.1.1.1 and 2.2.2.2 and rollback
# occurs. Then moves onto successfully allocating 1002.
nexus_db_v2.update_vpc_entry(['3.3.3.3'], 1001, False, True)
vpc_id = nexus_db_v2.alloc_vpcid(nexus_ips)
self.assertEqual(vpc_id, 1002)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('1.1.1.1')
self.assertEqual(len(allocs), 24)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('2.2.2.2')
self.assertEqual(len(allocs), 24)
allocs = nexus_db_v2.get_free_switch_vpc_allocs('3.3.3.3')
self.assertEqual(len(allocs), 23)
def test_vpcalloc_init(self):
nexus_ips = ['1.1.1.1', '2.2.2.2', '3.3.3.3']
for this_ip in nexus_ips:
nexus_db_v2.init_vpc_entries(this_ip,
self._make_vpc_list(1001, 1025))
allocs = nexus_db_v2.get_free_switch_vpc_allocs(this_ip)
self.assertEqual(len(allocs), 25)
nexus_db_v2.update_vpc_entry(['1.1.1.1'], 1001, False, True)
nexus_db_v2.update_vpc_entry(['2.2.2.2'], 1002, False, True)
nexus_db_v2.update_vpc_entry(['3.3.3.3'], 1003, False, True)
# Verify this update fails since entry already active
self.assertRaises(exceptions.NexusVPCAllocNotFound,
nexus_db_v2.update_vpc_entry, ['3.3.3.3'], 1003,
False, True)
new_vpcid = nexus_db_v2.alloc_vpcid(nexus_ips)
self.assertEqual(new_vpcid, 1004)
nexus_db_v2.free_vpcid_for_switch(1002, '2.2.2.2')
nexus_db_v2.free_vpcid_for_switch_list(1004, nexus_ips)
# verify vpc 1002 can now be reused
new_vpcid = nexus_db_v2.alloc_vpcid(nexus_ips)
self.assertEqual(new_vpcid, 1002)
def test_vpc_config_db_results_with_old_config3(self):
"""Config valid vpc-pool compare with pre-existing entries."""
# 1 no add, already exists
# 11 no add, already exists
old_list = [1, 6, 8, 11]
# Pretend these already existed and make 8 active
nxos_db.init_vpc_entries('1.1.1.1', old_list)
self._run_vpc_config_test('1.1.1.1', '1-4, 6-9, 11', 9, 1, 11)
def test_vpc_config_db_results_with_old_config2(self):
"""Config valid vpc-pool compare with pre-existing entries."""
# 1 no add, already exists
# 6 remove not active
# 8 no remove, ACTIVE
# 11 no add, already exists
old_list = [1, 6, 8, 11]
# Pretend these already existed and make 8 active
nxos_db.init_vpc_entries('1.1.1.1', old_list)
nxos_db.update_vpc_entry(['1.1.1.1'], 8, True, True)
self._run_vpc_config_test('1.1.1.1', '1-4, 9, 11', 7, 1, 11)
def test_vpc_config_db_results_with_old_config1(self):
"""Config valid vpc-pool compare with pre-existing entries."""
# 1 will be removed,
# 3 no add, already exists
# 4 no add, already exists
# 11 will not be removed since active
old_list = [1, 3, 4, 11]
# Pretend these already existed and make 11 active
nxos_db.init_vpc_entries('1.1.1.1', old_list)
nxos_db.update_vpc_entry(['1.1.1.1'], 11, True, True)
self._run_vpc_config_test('1.1.1.1', '2-5, 8', 6, 2, 11)
def test_vpc_config_db_results_bad_config_keep_old(self):
"""Verify on config error, existing db entries stay intact."""
old_list = [1, 6, 8, 11]
# Pretend these already existed and make 8 active
nxos_db.init_vpc_entries('1.1.1.1', old_list)
nxos_db.update_vpc_entry(['1.1.1.1'], 8, True, True)
# valid port-channel values are 1-4096 on Nexus 9K
# ERROR: range starts with 0
bad_min = str(const.MINVPC - 1) + '-1001, 1002'
self._run_vpc_config_test('1.1.1.1', bad_min, 4, 1, 11)
def test_vpc_config_db_results_removal(self):
"""Allow user to remove config but only non-active."""
# 1 no add, already exists
# 6 remove not active
# 8 no remove, ACTIVE
# 11 no add, already exists
old_list = [1, 6, 8, 11]
# Pretend these already existed and make 8 active
nxos_db.init_vpc_entries('1.1.1.1', old_list)
nxos_db.update_vpc_entry(['1.1.1.1'], 8, True, True)
self._run_vpc_config_test('1.1.1.1', '', 1, 8, 8)
# Make 8 inactive and try again.
nxos_db.update_vpc_entry(['1.1.1.1'], 8, False, False)
self._run_vpc_config_test('1.1.1.1', '', 0, None, None)
def test_vpcalloc_min_max(self):
# Initialize 3 switch vpc entries
nexus_db_v2.init_vpc_entries('1.1.1.1',
self._make_vpc_list(1001, 2000))
nexus_db_v2.init_vpc_entries('2.2.2.2',
self._make_vpc_list(2001, 3000))
nexus_db_v2.init_vpc_entries('3.3.3.3',
self._make_vpc_list(3001, 4000))
# Verify get_switch_vpc_count_min_max() returns correct
# count, min, max values for all 3 switches.
count, min, max = nexus_db_v2.get_switch_vpc_count_min_max('1.1.1.1')
self.assertEqual(count, 1000)
self.assertEqual(min, 1001)
self.assertEqual(max, 2000)
count, min, max = nexus_db_v2.get_switch_vpc_count_min_max('2.2.2.2')
self.assertEqual(count, 1000)
self.assertEqual(min, 2001)
self.assertEqual(max, 3000)
count, min, max = nexus_db_v2.get_switch_vpc_count_min_max('3.3.3.3')
self.assertEqual(count, 1000)
self.assertEqual(min, 3001)
self.assertEqual(max, 4000)
def test_failure_inconsistent_new_chgrp(self):
"""Started as newly created chgrp but one if had chgrp configured."""
# First interface Nexus returns there's no ch_grp
# so treat as port-channel create.
# Second interface Nexus returns ch_grp so so process
# reset procedure which checks that .....
# - port-channel deleted from Nexus for first interface
# - ch_grp removed from Nexus on first interface
# - free-up vpcid allocated on first interface
# - raised cexc.NexusVPCExpectedNoChgrp
LOCAL_GET_PORT_CH_RESPONSE = {
"totalCount":
"1",
"imdata": [{
"pcRsMbrIfs": {
"attributes": {
"parentSKey": "po470",
"tSKey": "eth1/20",
}
}
}]
}
def local_get_init_side_effect(action,
ipaddr=None,
body=None,
headers=None):
eth_path = 'api/mo/sys/intf/phys-'
port_chan_path = 'api/mo/sys/intf/aggr-'
if action == snipp.PATH_GET_NEXUS_TYPE:
return base.GET_NEXUS_TYPE_RESPONSE
elif action in snipp.PATH_GET_PC_MEMBERS:
return LOCAL_GET_PORT_CH_RESPONSE
elif eth_path in action:
return base.GET_INTERFACE_RESPONSE
elif port_chan_path in action:
return GET_INTERFACE_PCHAN_NO_TRUNK_RESPONSE
return {}
# Substitute init_port_channel() with the following
# since this is a one time test scenario.
data_json = {'rest_get.side_effect': local_get_init_side_effect}
self.mock_ncclient.configure_mock(**data_json)
switch_list = ['1.1.1.1', '2.2.2.2']
for switch_ip in switch_list:
nxos_db.init_vpc_entries(switch_ip,
self._make_vpc_list(1001, 1025))
allocs = nxos_db.get_free_switch_vpc_allocs(switch_ip)
self.assertEqual(len(allocs), 25)
e = self.assertRaises(exceptions.NexusVPCExpectedNoChgrp,
self._create_port,
self.test_configs['test_config_vPC'])
# Check that appropriate string in exception string
x = six.u(str(e))
self.assertIn("first interface 1.1.1.1, ethernet:1/10, vpc=None", x)
self.assertIn("second interface 2.2.2.2, ethernet:1/20, vpc=470", x)
# Verify vpcid initially allocated is now free
for switch_ip in switch_list:
allocs = nxos_db.get_free_switch_vpc_allocs(switch_ip)
self.assertEqual(len(allocs), 25)
# Verify no attempt to create port-channels
self._verify_results([])
