def test_handle_spec(self):
self.make_mock_vpc()
# Need to take a peek inside the VPC so we can properly evaluate the
# output later on
con = vpc.connect_to_region("ap-southeast-2")
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
route_spec = {u"10.2.0.0/16": [self.i1ip]}
d['cluster_node_subnets'] = \
vpc.make_cluster_node_subnet_list(d, route_spec)
i, eni = vpc.find_instance_and_eni_by_ip(d, self.i1ip)
rt_id = d['route_tables'][0].id
con.associate_route_table(route_table_id=rt_id,
subnet_id=self.new_subnet_a.id)
con.associate_route_table(route_table_id=rt_id,
subnet_id=self.new_subnet_b.id)
# Test handle_spec
vid = self.new_vpc.id
self.lc.clear()
vpc.handle_spec("ap-southeast-2", vid, route_spec, [], [])
self.lc.check(
('root', 'DEBUG', 'Handle route spec'),
('root', 'DEBUG', "Connecting to AWS region 'ap-southeast-2'"),
('root', 'DEBUG', "Retrieving information for VPC '%s'" % vid),
('root', 'DEBUG', 'Route spec processing. No failed IPs.'),
('root', 'INFO',
"--- adding route in RT '%s' 10.2.0.0/16 -> %s (%s, %s)" %
(rt_id, self.i1ip, self.i1.id, eni.id)))
# mock the get_instance_private_ip_from_route() function in vpc. Reason
# being: The boto mocking library (moto) doesn't handle ENIs in routes
# correctly. Therefore, a match against the information we get from the
# routes will never work. So, we provide a wrapper, which fills the
# instance's ENI information into the route. This means that this
# function now will always match. It's good for testing the 'match'
# part of the code.
old_func = vpc.get_instance_private_ip_from_route
def my_get_instance_private_ip_from_route(instance, route):
route.interface_id = instance.interfaces[0].id
return old_func(instance, route)
vpc.get_instance_private_ip_from_route = \
my_get_instance_private_ip_from_route
self.lc.clear()
vpc.handle_spec("ap-southeast-2", vid, route_spec, [], [])
vpc.get_instance_private_ip_from_route = old_func
self.lc.check(
('root', 'DEBUG', 'Handle route spec'),
('root', 'DEBUG', "Connecting to AWS region 'ap-southeast-2'"),
('root', 'DEBUG', "Retrieving information for VPC '%s'" % vid),
('root', 'DEBUG', 'Route spec processing. No failed IPs.'),
('root', 'INFO',
"--- route exists already in RT '%s': 10.2.0.0/16 -> "
"%s (%s, %s)" % (rt_id, self.i1ip, self.i1.id, eni.id)))
def test_connect(self):
self.make_mock_vpc()
# With a test VPC created, we now test our own functions
con = vpc.connect_to_region("ap-southeast-2")
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
self.assertEqual(
sorted([
'subnets', 'route_tables', 'instance_by_id', 'instances',
'zones', 'vpc'
]), sorted(d.keys()))
self.assertEqual(self.new_vpc.id, d['vpc'].id)
self.assertTrue(self.new_subnet_a.id in [s.id for s in d['subnets']])
self.assertTrue(self.new_subnet_b.id in [s.id for s in d['subnets']])
self.assertTrue(len(d['zones']) == 3)
self.assertTrue(len(d['route_tables']) == 1)
self.assertTrue(len(d['instance_by_id'].keys()) == 2)
self.assertTrue(d['instance_by_id'][self.i1.id].id == self.i1.id)
self.assertTrue(d['instance_by_id'][self.i2.id].id == self.i2.id)
self.assertTrue(
vpc.find_instance_and_eni_by_ip(d, self.i1ip)[0].id == self.i1.id)
self.assertTrue(
vpc.find_instance_and_eni_by_ip(d, self.i2ip)[0].id == self.i2.id)
def _prepare_mock_env(self):
self.make_mock_vpc()
con = vpc.connect_to_region("ap-southeast-2")
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
i1, eni1 = vpc.find_instance_and_eni_by_ip(d, self.i1ip)
i2, eni2 = vpc.find_instance_and_eni_by_ip(d, self.i2ip)
rt_id = d['route_tables'][0].id
return con, d, i1, eni1, i2, eni2, rt_id
def test_connect(self):
self.make_mock_vpc()
# With a test VPC created, we now test our own functions
# In the mocked test the meta data won't contain the info we need (vpc
# and region name), because the emulated EC2 instance isn't in any
# region or vpc.
meta = vpc.get_ec2_meta_data()
self.assertTrue(meta == {})
self.assertRaises(VpcRouteSetError, vpc.connect_to_region, "blah")
con = vpc.connect_to_region("ap-southeast-2")
# Error when specifying non-existent VPC
self.assertRaises(VpcRouteSetError, vpc.get_vpc_overview, con,
"non-existent-vpc", "ap-southeast-2")
# Get the default: First VPC if no VPC is specified
d = vpc.get_vpc_overview(con, None, "ap-southeast-2")
self.assertEqual(d['vpc'].id, "vpc-be745e76")
# Get specified VPC
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
self.assertEqual(d['vpc'].id, "vpc-be745e76")
self.assertEqual(
sorted([
'subnets', 'route_tables', 'instance_by_id',
'ip_subnet_lookup', 'instances', 'rt_subnet_lookup', 'zones',
'vpc'
]), sorted(d.keys()))
self.assertEqual(self.new_vpc.id, d['vpc'].id)
self.assertTrue(self.new_subnet_a.id in [s.id for s in d['subnets']])
self.assertTrue(self.new_subnet_b.id in [s.id for s in d['subnets']])
self.assertTrue(len(d['zones']) == 3)
self.assertTrue(len(d['route_tables']) == 1)
self.assertTrue(len(d['instance_by_id'].keys()) == 2)
self.assertTrue(d['instance_by_id'][self.i1.id].id == self.i1.id)
self.assertTrue(d['instance_by_id'][self.i2.id].id == self.i2.id)
self.assertRaises(VpcRouteSetError, vpc.find_instance_and_eni_by_ip, d,
"9.9.9.9") # Non existent IP
self.assertTrue(
vpc.find_instance_and_eni_by_ip(d, self.i1ip)[0].id == self.i1.id)
self.assertTrue(
vpc.find_instance_and_eni_by_ip(d, self.i2ip)[0].id == self.i2.id)
def test_process_route_spec_config(self):
self.make_mock_vpc()
con = vpc.connect_to_region("ap-southeast-2")
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
i1, eni1 = vpc.find_instance_and_eni_by_ip(d, self.i1ip)
i2, eni2 = vpc.find_instance_and_eni_by_ip(d, self.i2ip)
rt_id = d['route_tables'][0].id
route_spec = {u"10.1.0.0/16": [self.i1ip, self.i2ip]}
# Process a simple route spec, a route should have been added
self.lc.clear()
vpc.process_route_spec_config(con, d, route_spec, [])
# One of the hosts is randomly chosen. We seeded the random number
# generator at in this module, so we know that it will choose the
# second host in this case.
self.lc.check(
('root', 'DEBUG', 'Route spec processing. No failed IPs.'),
('root', 'INFO', "--- adding route in RT '%s' "
"10.1.0.0/16 -> %s (%s, %s)" %
(rt_id, self.i2ip, i2.id, eni2.id)))
# One of the two IPs failed, switch over
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
self.lc.clear()
vpc.process_route_spec_config(con, d, route_spec, [self.i1ip])
self.lc.check(
('root', 'DEBUG',
'Route spec processing. Failed IPs: %s' % self.i1ip),
('root', 'INFO',
"--- updating existing route in RT '%s' 10.1.0.0/16 -> "
"%s (%s, %s) (old IP: None, reason: old IP failed or not "
"eligible anymore)" % (rt_id, self.i2ip, i2.id, eni2.id)))
# Now all IPs for a route have failed
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
self.lc.clear()
vpc.process_route_spec_config(con, d, route_spec,
[self.i1ip, self.i2ip])
self.lc.check(
('root', 'DEBUG', 'Route spec processing. Failed IPs: %s,%s' %
(self.i1ip, self.i2ip)),
('root', 'WARNING',
'--- cannot find available target for route update 10.1.0.0/16! '
'Nothing I can do...'))
# Add new route, remove old one
route_spec = {u"10.2.0.0/16": [self.i1ip]}
d = vpc.get_vpc_overview(con, self.new_vpc.id, "ap-southeast-2")
self.lc.clear()
vpc.process_route_spec_config(con, d, route_spec, [])
self.lc.check(
('root', 'DEBUG', 'Route spec processing. No failed IPs.'),
('root', 'INFO', "--- route not in spec, deleting in RT '%s': "
"10.1.0.0/16 -> ... (%s, (unknown))" % (rt_id, i2.id)),
('root', 'INFO', "--- adding route in RT '%s' "
"10.2.0.0/16 -> %s (%s, %s)" %
(rt_id, self.i1ip, i1.id, eni1.id)))