def test_cname_configured_with_empty_storage_domain(self):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(),
{'storage_domain': '',
'lookup_depth': 2})
req = Request.blank('/', environ={'REQUEST_METHOD': 'GET'},
headers={'Host': 'c.a.example.com'})
resp = app(req.environ, start_response)
self.assertEqual(resp, ['FAKE APP'])
def test_resolution_to_storage_domain_exactly(self):
conf = {'storage_domain': 'example.com', 'lookup_depth': 1}
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
req = Request.blank('/',
environ={'REQUEST_METHOD': 'GET'},
headers={'Host': 'mysite.com'})
module = 'swift.common.middleware.cname_lookup.lookup_cname'
with mock.patch(module, lambda d, r: (0, 'example.com')):
resp = app(req.environ, start_response)
self.assertEqual(resp, ['FAKE APP'])
def test_redirect(self):
app = cname_lookup.CNAMELookupMiddleware(RedirectSlashApp(), {})
module = 'swift.common.middleware.cname_lookup.lookup_cname'
with mock.patch(module, lambda x: (0, 'cont.acct.example.com')):
req = Request.blank('/test', environ={'REQUEST_METHOD': 'GET'},
headers={'Host': 'mysite.com'})
resp = req.get_response(app)
self.assertEqual(resp.status_int, 301)
self.assertEqual(resp.headers.get('Location'),
'http://mysite.com/test/')
def test_host_is_storage_domain(self):
conf = {'storage_domain': 'storage.example.com', 'lookup_depth': 2}
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
def do_test(host):
req = Request.blank('/',
environ={'REQUEST_METHOD': 'GET'},
headers={'Host': host})
return app(req.environ, start_response)
bad_domain = ['CNAME lookup failed to resolve to a valid domain']
resp = do_test('c.badtest.com')
self.assertEqual(resp, bad_domain)
resp = do_test('storage.example.com')
self.assertEqual(resp, ['FAKE APP'])
def test_multiple_storage_domains(self):
conf = {'storage_domain': 'storage1.com, storage2.com',
'lookup_depth': 2}
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
def do_test(lookup_back):
req = Request.blank('/', environ={'REQUEST_METHOD': 'GET'},
headers={'Host': 'c.a.example.com'})
module = 'swift.common.middleware.cname_lookup.lookup_cname'
with mock.patch(module, lambda x: (0, lookup_back)):
return app(req.environ, start_response)
resp = do_test('c.storage1.com')
self.assertEqual(resp, ['FAKE APP'])
resp = do_test('c.storage2.com')
self.assertEqual(resp, ['FAKE APP'])
bad_domain = ['CNAME lookup failed to resolve to a valid domain']
resp = do_test('c.badtest.com')
self.assertEqual(resp, bad_domain)
def setUp(self):
self.app = cname_lookup.CNAMELookupMiddleware(FakeApp(),
{'lookup_depth': 2})
def test_configured_nameservers(self):
class MockedResolver(object):
def __init__(self):
self.nameservers = None
self.nameserver_ports = None
def query(self, *args, **kwargs):
raise Exception('Stop processing')
def reset(self):
self.nameservers = None
self.nameserver_ports = None
mocked_resolver = MockedResolver()
dns_module = 'dns.resolver.Resolver'
# If no nameservers provided in conf, resolver nameservers is unset
for conf in [{}, {'nameservers': ''}]:
mocked_resolver.reset()
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertIsNone(mocked_resolver.nameservers)
# If invalid nameservers provided, resolver nameservers is unset
mocked_resolver.reset()
conf = {'nameservers': '127.0.0.1, 127.0.0.2, a.b.c.d'}
with mock.patch(dns_module, return_value=mocked_resolver):
with self.assertRaises(ValueError) as exc_mgr:
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIn('Invalid cname_lookup/nameservers configuration',
str(exc_mgr.exception))
# If nameservers provided in conf, resolver nameservers is set
mocked_resolver.reset()
conf = {'nameservers': '127.0.0.1'}
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertEqual(mocked_resolver.nameservers, ['127.0.0.1'])
self.assertEqual(mocked_resolver.nameserver_ports, {})
# IPv6 is OK
mocked_resolver.reset()
conf = {'nameservers': '[::1]'}
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertEqual(mocked_resolver.nameservers, ['::1'])
self.assertEqual(mocked_resolver.nameserver_ports, {})
# As are port overrides
mocked_resolver.reset()
conf = {'nameservers': '127.0.0.1:5354'}
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertEqual(mocked_resolver.nameservers, ['127.0.0.1'])
self.assertEqual(mocked_resolver.nameserver_ports, {'127.0.0.1': 5354})
# And IPv6 with port overrides
mocked_resolver.reset()
conf = {'nameservers': '[2001:db8::ff00:42:8329]:1234'}
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertEqual(mocked_resolver.nameservers,
['2001:db8::ff00:42:8329'])
self.assertEqual(mocked_resolver.nameserver_ports,
{'2001:db8::ff00:42:8329': 1234})
# Also accept lists, and bring it all together
mocked_resolver.reset()
conf = {
'nameservers':
'[::1], 127.0.0.1:5354, '
'[2001:db8::ff00:42:8329]:1234'
}
with mock.patch(dns_module, return_value=mocked_resolver):
app = cname_lookup.CNAMELookupMiddleware(FakeApp(), conf)
self.assertIs(app.resolver, mocked_resolver)
self.assertEqual(mocked_resolver.nameservers,
['::1', '127.0.0.1', '2001:db8::ff00:42:8329'])
self.assertEqual(mocked_resolver.nameserver_ports, {
'127.0.0.1': 5354,
'2001:db8::ff00:42:8329': 1234
})
def setUp(self):
if skip:
raise SkipTest
self.app = cname_lookup.CNAMELookupMiddleware(FakeApp(),
{'lookup_depth': 2})