395 lines
15 KiB
Python
395 lines
15 KiB
Python
# Copyright 2013-2016 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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from tests.integration import use_singledc, PROTOCOL_VERSION
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import logging
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log = logging.getLogger(__name__)
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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 itertools import cycle, count
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from six.moves import range
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from threading import Event
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from cassandra.cluster import Cluster
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from cassandra.concurrent import execute_concurrent, execute_concurrent_with_args
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from cassandra.policies import HostDistance
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from cassandra.query import SimpleStatement
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def setup_module():
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use_singledc()
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class QueryPagingTests(unittest.TestCase):
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def setUp(self):
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if PROTOCOL_VERSION < 2:
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raise unittest.SkipTest(
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"Protocol 2.0+ is required for Paging state, currently testing against %r"
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% (PROTOCOL_VERSION,))
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self.cluster = Cluster(protocol_version=PROTOCOL_VERSION)
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if PROTOCOL_VERSION < 3:
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self.cluster.set_core_connections_per_host(HostDistance.LOCAL, 1)
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self.session = self.cluster.connect()
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self.session.execute("TRUNCATE test3rf.test")
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def tearDown(self):
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self.cluster.shutdown()
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def test_paging(self):
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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self.assertEqual(100, len(list(self.session.execute("SELECT * FROM test3rf.test"))))
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statement = SimpleStatement("SELECT * FROM test3rf.test")
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self.assertEqual(100, len(list(self.session.execute(statement))))
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self.assertEqual(100, len(list(self.session.execute(prepared))))
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def test_paging_state(self):
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"""
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Test to validate paging state api
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@since 3.7.0
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@jira_ticket PYTHON-200
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@expected_result paging state should returned should be accurate, and allow for queries to be resumed.
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@test_category queries
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"""
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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list_all_results = []
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self.session.default_fetch_size = 3
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result_set = self.session.execute("SELECT * FROM test3rf.test")
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while(result_set.has_more_pages):
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for row in result_set.current_rows:
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self.assertNotIn(row, list_all_results)
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list_all_results.extend(result_set.current_rows)
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page_state = result_set.paging_state
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result_set = self.session.execute("SELECT * FROM test3rf.test", paging_state=page_state)
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if(len(result_set.current_rows) > 0):
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list_all_results.append(result_set.current_rows)
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self.assertEqual(len(list_all_results), 100)
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def test_paging_verify_writes(self):
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, statements_and_params)
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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results = self.session.execute("SELECT * FROM test3rf.test")
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result_array = set()
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result_set = set()
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for result in results:
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result_array.add(result.k)
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result_set.add(result.v)
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self.assertEqual(set(range(100)), result_array)
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self.assertEqual(set([0]), result_set)
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statement = SimpleStatement("SELECT * FROM test3rf.test")
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results = self.session.execute(statement)
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result_array = set()
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result_set = set()
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for result in results:
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result_array.add(result.k)
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result_set.add(result.v)
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self.assertEqual(set(range(100)), result_array)
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self.assertEqual(set([0]), result_set)
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results = self.session.execute(prepared)
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result_array = set()
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result_set = set()
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for result in results:
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result_array.add(result.k)
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result_set.add(result.v)
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self.assertEqual(set(range(100)), result_array)
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self.assertEqual(set([0]), result_set)
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def test_paging_verify_with_composite_keys(self):
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ddl = '''
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CREATE TABLE test3rf.test_paging_verify_2 (
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k1 int,
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k2 int,
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v int,
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PRIMARY KEY(k1, k2)
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)'''
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self.session.execute(ddl)
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test_paging_verify_2 "
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"(k1, k2, v) VALUES (0, %s, %s)"]),
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[(i, i + 1) for i in range(100)])
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execute_concurrent(self.session, statements_and_params)
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prepared = self.session.prepare("SELECT * FROM test3rf.test_paging_verify_2")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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results = self.session.execute("SELECT * FROM test3rf.test_paging_verify_2")
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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statement = SimpleStatement("SELECT * FROM test3rf.test_paging_verify_2")
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results = self.session.execute(statement)
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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results = self.session.execute(prepared)
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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def test_async_paging(self):
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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self.assertEqual(100, len(list(self.session.execute_async("SELECT * FROM test3rf.test").result())))
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statement = SimpleStatement("SELECT * FROM test3rf.test")
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self.assertEqual(100, len(list(self.session.execute_async(statement).result())))
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self.assertEqual(100, len(list(self.session.execute_async(prepared).result())))
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def test_async_paging_verify_writes(self):
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ddl = '''
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CREATE TABLE test3rf.test_async_paging_verify (
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k1 int,
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k2 int,
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v int,
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PRIMARY KEY(k1, k2)
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)'''
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self.session.execute(ddl)
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test_async_paging_verify "
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"(k1, k2, v) VALUES (0, %s, %s)"]),
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[(i, i + 1) for i in range(100)])
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execute_concurrent(self.session, statements_and_params)
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prepared = self.session.prepare("SELECT * FROM test3rf.test_async_paging_verify")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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results = self.session.execute_async("SELECT * FROM test3rf.test_async_paging_verify").result()
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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statement = SimpleStatement("SELECT * FROM test3rf.test_async_paging_verify")
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results = self.session.execute_async(statement).result()
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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results = self.session.execute_async(prepared).result()
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result_array = []
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value_array = []
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for result in results:
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result_array.append(result.k2)
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value_array.append(result.v)
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self.assertSequenceEqual(range(100), result_array)
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self.assertSequenceEqual(range(1, 101), value_array)
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def test_paging_callbacks(self):
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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future = self.session.execute_async("SELECT * FROM test3rf.test")
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event = Event()
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counter = count()
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def handle_page(rows, future, counter):
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for row in rows:
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next(counter)
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if future.has_more_pages:
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future.start_fetching_next_page()
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else:
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event.set()
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def handle_error(err):
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event.set()
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self.fail(err)
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future.add_callbacks(callback=handle_page, callback_args=(future, counter), errback=handle_error)
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event.wait()
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self.assertEqual(next(counter), 100)
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# simple statement
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future = self.session.execute_async(SimpleStatement("SELECT * FROM test3rf.test"))
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event.clear()
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counter = count()
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future.add_callbacks(callback=handle_page, callback_args=(future, counter), errback=handle_error)
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event.wait()
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self.assertEqual(next(counter), 100)
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# prepared statement
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future = self.session.execute_async(prepared)
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event.clear()
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counter = count()
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future.add_callbacks(callback=handle_page, callback_args=(future, counter), errback=handle_error)
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event.wait()
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self.assertEqual(next(counter), 100)
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def test_concurrent_with_paging(self):
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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for fetch_size in (2, 3, 7, 10, 99, 100, 101, 10000):
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self.session.default_fetch_size = fetch_size
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results = execute_concurrent_with_args(self.session, prepared, [None] * 10)
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self.assertEqual(10, len(results))
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for (success, result) in results:
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self.assertTrue(success)
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self.assertEqual(100, len(list(result)))
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def test_fetch_size(self):
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"""
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Ensure per-statement fetch_sizes override the default fetch size.
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"""
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statements_and_params = zip(cycle(["INSERT INTO test3rf.test (k, v) VALUES (%s, 0)"]),
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[(i, ) for i in range(100)])
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execute_concurrent(self.session, list(statements_and_params))
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prepared = self.session.prepare("SELECT * FROM test3rf.test")
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self.session.default_fetch_size = 10
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result = self.session.execute(prepared, [])
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self.assertTrue(result.has_more_pages)
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self.session.default_fetch_size = 2000
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result = self.session.execute(prepared, [])
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self.assertFalse(result.has_more_pages)
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self.session.default_fetch_size = None
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result = self.session.execute(prepared, [])
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self.assertFalse(result.has_more_pages)
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self.session.default_fetch_size = 10
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prepared.fetch_size = 2000
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result = self.session.execute(prepared, [])
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self.assertFalse(result.has_more_pages)
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prepared.fetch_size = None
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result = self.session.execute(prepared, [])
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self.assertFalse(result.has_more_pages)
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prepared.fetch_size = 10
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result = self.session.execute(prepared, [])
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self.assertTrue(result.has_more_pages)
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prepared.fetch_size = 2000
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bound = prepared.bind([])
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result = self.session.execute(bound, [])
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self.assertFalse(result.has_more_pages)
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prepared.fetch_size = None
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bound = prepared.bind([])
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result = self.session.execute(bound, [])
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self.assertFalse(result.has_more_pages)
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prepared.fetch_size = 10
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bound = prepared.bind([])
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result = self.session.execute(bound, [])
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self.assertTrue(result.has_more_pages)
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bound.fetch_size = 2000
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result = self.session.execute(bound, [])
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self.assertFalse(result.has_more_pages)
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bound.fetch_size = None
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result = self.session.execute(bound, [])
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self.assertFalse(result.has_more_pages)
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bound.fetch_size = 10
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result = self.session.execute(bound, [])
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self.assertTrue(result.has_more_pages)
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s = SimpleStatement("SELECT * FROM test3rf.test", fetch_size=None)
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result = self.session.execute(s, [])
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self.assertFalse(result.has_more_pages)
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s = SimpleStatement("SELECT * FROM test3rf.test")
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result = self.session.execute(s, [])
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self.assertTrue(result.has_more_pages)
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s = SimpleStatement("SELECT * FROM test3rf.test")
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s.fetch_size = None
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result = self.session.execute(s, [])
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self.assertFalse(result.has_more_pages)
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