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# Copyright DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License
from cassandra.datastax.cloud import parse_metadata_info
from cassandra.query import SimpleStatement
from cassandra.cqlengine import connection
from cassandra.cqlengine.management import sync_table, create_keyspace_simple
from cassandra.cqlengine.models import Model
from cassandra.cqlengine import columns
import unittest
from ssl import SSLContext, PROTOCOL_TLS
from cassandra import DriverException, ConsistencyLevel, InvalidRequest
from cassandra.cluster import NoHostAvailable, ExecutionProfile, Cluster, _execution_profile_to_string
from cassandra.connection import SniEndPoint
from cassandra.auth import PlainTextAuthProvider
from cassandra.policies import TokenAwarePolicy, DCAwareRoundRobinPolicy, ConstantReconnectionPolicy
from unittest.mock import patch
from tests.integration import requirescloudproxy
from tests.util import wait_until_not_raised
from tests.integration.cloud import CloudProxyCluster, CLOUD_PROXY_SERVER
DISALLOWED_CONSISTENCIES = [
ConsistencyLevel.ANY,
ConsistencyLevel.ONE,
ConsistencyLevel.LOCAL_ONE
]
@requirescloudproxy
class CloudTests(CloudProxyCluster):
def hosts_up(self):
return [h for h in self.cluster.metadata.all_hosts() if h.is_up]
def test_resolve_and_connect(self):
self.connect(self.creds)
self.assertEqual(len(self.hosts_up()), 3)
for host in self.cluster.metadata.all_hosts():
self.assertTrue(host.is_up)
self.assertIsInstance(host.endpoint, SniEndPoint)
self.assertEqual(str(host.endpoint), "{}:{}:{}".format(
host.endpoint.address, host.endpoint.port, host.host_id))
self.assertIn(host.endpoint._resolved_address, ("127.0.0.1", '::1'))
def test_match_system_local(self):
self.connect(self.creds)
self.assertEqual(len(self.hosts_up()), 3)
for host in self.cluster.metadata.all_hosts():
row = self.session.execute('SELECT * FROM system.local', host=host).one()
self.assertEqual(row.host_id, host.host_id)
self.assertEqual(row.rpc_address, host.broadcast_rpc_address)
def test_set_auth_provider(self):
self.connect(self.creds)
self.assertIsInstance(self.cluster.auth_provider, PlainTextAuthProvider)
self.assertEqual(self.cluster.auth_provider.username, 'user1')
self.assertEqual(self.cluster.auth_provider.password, 'user1')
def test_support_leaving_the_auth_unset(self):
with self.assertRaises(NoHostAvailable):
self.connect(self.creds_no_auth)
self.assertIsNone(self.cluster.auth_provider)
def test_support_overriding_auth_provider(self):
try:
self.connect(self.creds, auth_provider=PlainTextAuthProvider('invalid', 'invalid'))
except:
pass # this will fail soon when sni_single_endpoint is updated
self.assertIsInstance(self.cluster.auth_provider, PlainTextAuthProvider)
self.assertEqual(self.cluster.auth_provider.username, 'invalid')
self.assertEqual(self.cluster.auth_provider.password, 'invalid')
def test_error_overriding_ssl_context(self):
with self.assertRaises(ValueError) as cm:
self.connect(self.creds, ssl_context=SSLContext(PROTOCOL_TLS))
self.assertIn('cannot be specified with a cloud configuration', str(cm.exception))
def test_error_overriding_ssl_options(self):
with self.assertRaises(ValueError) as cm:
self.connect(self.creds, ssl_options={'check_hostname': True})
self.assertIn('cannot be specified with a cloud configuration', str(cm.exception))
def _bad_hostname_metadata(self, config, http_data):
config = parse_metadata_info(config, http_data)
config.sni_host = "127.0.0.1"
return config
def test_verify_hostname(self):
with patch('cassandra.datastax.cloud.parse_metadata_info', wraps=self._bad_hostname_metadata):
with self.assertRaises(NoHostAvailable) as e:
self.connect(self.creds)
self.assertIn("hostname", str(e.exception).lower())
def test_error_when_bundle_doesnt_exist(self):
try:
self.connect('/invalid/path/file.zip')
except Exception as e:
self.assertIsInstance(e, FileNotFoundError)
def test_load_balancing_policy_is_dcawaretokenlbp(self):
self.connect(self.creds)
self.assertIsInstance(self.cluster.profile_manager.default.load_balancing_policy,
TokenAwarePolicy)
self.assertIsInstance(self.cluster.profile_manager.default.load_balancing_policy._child_policy,
DCAwareRoundRobinPolicy)
def test_resolve_and_reconnect_on_node_down(self):
self.connect(self.creds,
idle_heartbeat_interval=1, idle_heartbeat_timeout=1,
reconnection_policy=ConstantReconnectionPolicy(120))
self.assertEqual(len(self.hosts_up()), 3)
CLOUD_PROXY_SERVER.stop_node(1)
wait_until_not_raised(
lambda: self.assertEqual(len(self.hosts_up()), 2),
0.02, 250)
host = [h for h in self.cluster.metadata.all_hosts() if not h.is_up][0]
with patch.object(SniEndPoint, "resolve", wraps=host.endpoint.resolve) as mocked_resolve:
CLOUD_PROXY_SERVER.start_node(1)
wait_until_not_raised(
lambda: self.assertEqual(len(self.hosts_up()), 3),
0.02, 250)
mocked_resolve.assert_called()
def test_metadata_unreachable(self):
with self.assertRaises(DriverException) as cm:
self.connect(self.creds_unreachable, connect_timeout=1)
self.assertIn('Unable to connect to the metadata service', str(cm.exception))
def test_metadata_ssl_error(self):
with self.assertRaises(DriverException) as cm:
self.connect(self.creds_invalid_ca)
self.assertIn('Unable to connect to the metadata', str(cm.exception))
def test_default_consistency(self):
self.connect(self.creds)
self.assertEqual(self.session.default_consistency_level, ConsistencyLevel.LOCAL_QUORUM)
# Verify EXEC_PROFILE_DEFAULT, EXEC_PROFILE_GRAPH_DEFAULT,
# EXEC_PROFILE_GRAPH_SYSTEM_DEFAULT, EXEC_PROFILE_GRAPH_ANALYTICS_DEFAULT
for ep_key in self.cluster.profile_manager.profiles.keys():
ep = self.cluster.profile_manager.profiles[ep_key]
self.assertEqual(
ep.consistency_level,
ConsistencyLevel.LOCAL_QUORUM,
"Expecting LOCAL QUORUM for profile {}, but got {} instead".format(
_execution_profile_to_string(ep_key), ConsistencyLevel.value_to_name[ep.consistency_level]
))
def test_default_consistency_of_execution_profiles(self):
cloud_config = {'secure_connect_bundle': self.creds}
self.cluster = Cluster(cloud=cloud_config, protocol_version=4, execution_profiles={
'pre_create_default_ep': ExecutionProfile(),
'pre_create_changed_ep': ExecutionProfile(
consistency_level=ConsistencyLevel.LOCAL_ONE,
),
})
self.cluster.add_execution_profile('pre_connect_default_ep', ExecutionProfile())
self.cluster.add_execution_profile(
'pre_connect_changed_ep',
ExecutionProfile(
consistency_level=ConsistencyLevel.LOCAL_ONE,
)
)
session = self.cluster.connect(wait_for_all_pools=True)
self.cluster.add_execution_profile('post_connect_default_ep', ExecutionProfile())
self.cluster.add_execution_profile(
'post_connect_changed_ep',
ExecutionProfile(
consistency_level=ConsistencyLevel.LOCAL_ONE,
)
)
for default in ['pre_create_default_ep', 'pre_connect_default_ep', 'post_connect_default_ep']:
cl = self.cluster.profile_manager.profiles[default].consistency_level
self.assertEqual(
cl, ConsistencyLevel.LOCAL_QUORUM,
"Expecting LOCAL QUORUM for profile {}, but got {} instead".format(default, cl)
)
for changed in ['pre_create_changed_ep', 'pre_connect_changed_ep', 'post_connect_changed_ep']:
cl = self.cluster.profile_manager.profiles[changed].consistency_level
self.assertEqual(
cl, ConsistencyLevel.LOCAL_ONE,
"Expecting LOCAL ONE for profile {}, but got {} instead".format(default, cl)
)
def test_consistency_guardrails(self):
self.connect(self.creds)
self.session.execute(
"CREATE KEYSPACE IF NOT EXISTS test_consistency_guardrails "
"with replication={'class': 'SimpleStrategy', 'replication_factor': 1}"
)
self.session.execute("CREATE TABLE IF NOT EXISTS test_consistency_guardrails.guardrails (id int primary key)")
for consistency in DISALLOWED_CONSISTENCIES:
statement = SimpleStatement(
"INSERT INTO test_consistency_guardrails.guardrails (id) values (1)",
consistency_level=consistency
)
with self.assertRaises(InvalidRequest) as e:
self.session.execute(statement)
self.assertIn('not allowed for Write Consistency Level', str(e.exception))
# Sanity check to make sure we can do a normal insert
statement = SimpleStatement(
"INSERT INTO test_consistency_guardrails.guardrails (id) values (1)",
consistency_level=ConsistencyLevel.LOCAL_QUORUM
)
try:
self.session.execute(statement)
except InvalidRequest:
self.fail("InvalidRequest was incorrectly raised for write query at LOCAL QUORUM!")
def test_cqlengine_can_connect(self):
class TestModel(Model):
id = columns.Integer(primary_key=True)
val = columns.Text()
connection.setup(None, "test", cloud={'secure_connect_bundle': self.creds})
create_keyspace_simple('test', 1)
sync_table(TestModel)
TestModel.objects.create(id=42, value='test')
self.assertEqual(len(TestModel.objects.all()), 1)
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