283 lines
9.8 KiB
Python
283 lines
9.8 KiB
Python
# Copyright 2013-2014 DataStax, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import six
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try:
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import unittest2 as unittest
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except ImportError:
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import unittest # noqa
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from six import BytesIO
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from mock import Mock, ANY
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from cassandra.cluster import Cluster
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from cassandra.connection import (Connection, HEADER_DIRECTION_TO_CLIENT,
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HEADER_DIRECTION_FROM_CLIENT, ProtocolError,
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locally_supported_compressions)
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from cassandra.marshal import uint8_pack, uint32_pack
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from cassandra.protocol import (write_stringmultimap, write_int, write_string,
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SupportedMessage)
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class ConnectionTest(unittest.TestCase):
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protocol_version = 2
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def make_connection(self):
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c = Connection('1.2.3.4')
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c._socket = Mock()
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c._socket.send.side_effect = lambda x: len(x)
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return c
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def make_header_prefix(self, message_class, version=2, stream_id=0):
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return six.binary_type().join(map(uint8_pack, [
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0xff & (HEADER_DIRECTION_TO_CLIENT | version),
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0, # flags (compression)
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stream_id,
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message_class.opcode # opcode
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]))
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def make_options_body(self):
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['3.0.1'],
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'COMPRESSION': []
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})
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return options_buf.getvalue()
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def make_error_body(self, code, msg):
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buf = BytesIO()
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write_int(buf, code)
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write_string(buf, msg)
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return buf.getvalue()
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def make_msg(self, header, body=""):
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return header + uint32_pack(len(body)) + body
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def test_bad_protocol_version(self, *args):
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c = self.make_connection()
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c._callbacks = Mock()
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c.defunct = Mock()
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage, version=0x04)
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options = self.make_options_body()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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# make sure it errored correctly
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c.defunct.assert_called_once_with(ANY)
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args, kwargs = c.defunct.call_args
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self.assertIsInstance(args[0], ProtocolError)
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def test_bad_header_direction(self, *args):
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c = self.make_connection()
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c._callbacks = Mock()
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c.defunct = Mock()
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# read in a SupportedMessage response
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header = six.binary_type().join(uint8_pack(i) for i in (
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0xff & (HEADER_DIRECTION_FROM_CLIENT | self.protocol_version),
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0, # flags (compression)
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0,
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SupportedMessage.opcode # opcode
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))
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options = self.make_options_body()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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# make sure it errored correctly
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c.defunct.assert_called_once_with(ANY)
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args, kwargs = c.defunct.call_args
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self.assertIsInstance(args[0], ProtocolError)
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def test_negative_body_length(self, *args):
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c = self.make_connection()
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c._callbacks = Mock()
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c.defunct = Mock()
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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options = self.make_options_body()
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message = self.make_msg(header, options)
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c.process_msg(message, -13)
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# make sure it errored correctly
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c.defunct.assert_called_once_with(ANY)
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args, kwargs = c.defunct.call_args
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self.assertIsInstance(args[0], ProtocolError)
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def test_unsupported_cql_version(self, *args):
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c = self.make_connection()
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c._callbacks = {0: c._handle_options_response}
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c.defunct = Mock()
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c.cql_version = "3.0.3"
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['7.8.9'],
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'COMPRESSION': []
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})
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options = options_buf.getvalue()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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# make sure it errored correctly
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c.defunct.assert_called_once_with(ANY)
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args, kwargs = c.defunct.call_args
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self.assertIsInstance(args[0], ProtocolError)
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def test_prefer_lz4_compression(self, *args):
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c = self.make_connection()
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c._callbacks = {0: c._handle_options_response}
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c.defunct = Mock()
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c.cql_version = "3.0.3"
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locally_supported_compressions.pop('lz4', None)
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locally_supported_compressions.pop('snappy', None)
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locally_supported_compressions['lz4'] = ('lz4compress', 'lz4decompress')
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locally_supported_compressions['snappy'] = ('snappycompress', 'snappydecompress')
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['3.0.3'],
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'COMPRESSION': ['snappy', 'lz4']
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})
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options = options_buf.getvalue()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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self.assertEqual(c.decompressor, locally_supported_compressions['lz4'][1])
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def test_requested_compression_not_available(self, *args):
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c = self.make_connection()
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c._callbacks = {0: c._handle_options_response}
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c.defunct = Mock()
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# request lz4 compression
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c.compression = "lz4"
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locally_supported_compressions.pop('lz4', None)
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locally_supported_compressions.pop('snappy', None)
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locally_supported_compressions['lz4'] = ('lz4compress', 'lz4decompress')
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locally_supported_compressions['snappy'] = ('snappycompress', 'snappydecompress')
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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# the server only supports snappy
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['3.0.3'],
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'COMPRESSION': ['snappy']
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})
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options = options_buf.getvalue()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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# make sure it errored correctly
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c.defunct.assert_called_once_with(ANY)
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args, kwargs = c.defunct.call_args
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self.assertIsInstance(args[0], ProtocolError)
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def test_use_requested_compression(self, *args):
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c = self.make_connection()
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c._callbacks = {0: c._handle_options_response}
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c.defunct = Mock()
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# request snappy compression
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c.compression = "snappy"
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locally_supported_compressions.pop('lz4', None)
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locally_supported_compressions.pop('snappy', None)
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locally_supported_compressions['lz4'] = ('lz4compress', 'lz4decompress')
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locally_supported_compressions['snappy'] = ('snappycompress', 'snappydecompress')
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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# the server only supports snappy
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['3.0.3'],
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'COMPRESSION': ['snappy', 'lz4']
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})
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options = options_buf.getvalue()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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self.assertEqual(c.decompressor, locally_supported_compressions['snappy'][1])
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def test_disable_compression(self, *args):
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c = self.make_connection()
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c._callbacks = {0: c._handle_options_response}
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c.defunct = Mock()
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# disable compression
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c.compression = False
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locally_supported_compressions.pop('lz4', None)
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locally_supported_compressions.pop('snappy', None)
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locally_supported_compressions['lz4'] = ('lz4compress', 'lz4decompress')
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locally_supported_compressions['snappy'] = ('snappycompress', 'snappydecompress')
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# read in a SupportedMessage response
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header = self.make_header_prefix(SupportedMessage)
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# the server only supports snappy
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options_buf = BytesIO()
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write_stringmultimap(options_buf, {
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'CQL_VERSION': ['3.0.3'],
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'COMPRESSION': ['snappy', 'lz4']
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})
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options = options_buf.getvalue()
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message = self.make_msg(header, options)
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c.process_msg(message, len(message) - 8)
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self.assertEqual(c.decompressor, None)
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def test_not_implemented(self):
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"""
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Ensure the following methods throw NIE's. If not, come back and test them.
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"""
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c = self.make_connection()
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self.assertRaises(NotImplementedError, c.close)
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self.assertRaises(NotImplementedError, c.register_watcher, None, None)
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self.assertRaises(NotImplementedError, c.register_watchers, None)
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def test_set_keyspace_blocking(self):
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c = self.make_connection()
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self.assertEqual(c.keyspace, None)
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c.set_keyspace_blocking(None)
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self.assertEqual(c.keyspace, None)
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c.keyspace = 'ks'
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c.set_keyspace_blocking('ks')
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self.assertEqual(c.keyspace, 'ks')
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def test_set_connection_class(self):
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cluster = Cluster(connection_class='test')
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self.assertEqual('test', cluster.connection_class)
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