1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
|
# 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 itertools import cycle
import sys, logging, traceback
from cassandra import InvalidRequest, ConsistencyLevel, ReadTimeout, WriteTimeout, OperationTimedOut, \
ReadFailure, WriteFailure
from cassandra.cluster import ExecutionProfile, EXEC_PROFILE_DEFAULT
from cassandra.concurrent import execute_concurrent, execute_concurrent_with_args, ExecutionResult
from cassandra.policies import HostDistance
from cassandra.query import dict_factory, tuple_factory, SimpleStatement
from tests.integration import use_singledc, PROTOCOL_VERSION, TestCluster
import unittest
log = logging.getLogger(__name__)
def setup_module():
use_singledc()
EXEC_PROFILE_DICT = "dict"
class ClusterTests(unittest.TestCase):
@classmethod
def setUpClass(cls):
cls.cluster = TestCluster(
execution_profiles = {
EXEC_PROFILE_DEFAULT: ExecutionProfile(row_factory=tuple_factory),
EXEC_PROFILE_DICT: ExecutionProfile(row_factory=dict_factory)
}
)
if PROTOCOL_VERSION < 3:
cls.cluster.set_core_connections_per_host(HostDistance.LOCAL, 1)
cls.session = cls.cluster.connect()
@classmethod
def tearDownClass(cls):
cls.cluster.shutdown()
def execute_concurrent_helper(self, session, query, **kwargs):
count = 0
while count < 100:
try:
return execute_concurrent(session, query, results_generator=False, **kwargs)
except (ReadTimeout, WriteTimeout, OperationTimedOut, ReadFailure, WriteFailure):
ex_type, ex, tb = sys.exc_info()
log.warning("{0}: {1} Backtrace: {2}".format(ex_type.__name__, ex, traceback.extract_tb(tb)))
del tb
count += 1
raise RuntimeError("Failed to execute query after 100 attempts: {0}".format(query))
def execute_concurrent_args_helper(self, session, query, params, results_generator=False, **kwargs):
count = 0
while count < 100:
try:
return execute_concurrent_with_args(session, query, params, results_generator=results_generator, **kwargs)
except (ReadTimeout, WriteTimeout, OperationTimedOut, ReadFailure, WriteFailure):
ex_type, ex, tb = sys.exc_info()
log.warning("{0}: {1} Backtrace: {2}".format(ex_type.__name__, ex, traceback.extract_tb(tb)))
del tb
raise RuntimeError("Failed to execute query after 100 attempts: {0}".format(query))
def execute_concurrent_base(self, test_fn, validate_fn, zip_args=True):
for num_statements in (0, 1, 2, 7, 10, 99, 100, 101, 199, 200, 201):
# write
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
statements = cycle((statement, ))
parameters = [(i, i) for i in range(num_statements)]
results = \
test_fn(self.session, list(zip(statements, parameters))) if zip_args else \
test_fn(self.session, statement, parameters)
self.assertEqual(num_statements, len(results))
for success, result in results:
self.assertTrue(success)
self.assertFalse(result)
# read
statement = SimpleStatement(
"SELECT v FROM test3rf.test WHERE k=%s",
consistency_level=ConsistencyLevel.QUORUM)
statements = cycle((statement, ))
parameters = [(i, ) for i in range(num_statements)]
results = \
test_fn(self.session, list(zip(statements, parameters))) if zip_args else \
test_fn(self.session, statement, parameters)
validate_fn(num_statements, results)
def execute_concurrent_valiate_tuple(self, num_statements, results):
self.assertEqual(num_statements, len(results))
self.assertEqual([(True, [(i,)]) for i in range(num_statements)], results)
def execute_concurrent_valiate_dict(self, num_statements, results):
self.assertEqual(num_statements, len(results))
self.assertEqual([(True, [{"v":i}]) for i in range(num_statements)], results)
def test_execute_concurrent(self):
self.execute_concurrent_base(self.execute_concurrent_helper, \
self.execute_concurrent_valiate_tuple)
def test_execute_concurrent_with_args(self):
self.execute_concurrent_base(self.execute_concurrent_args_helper, \
self.execute_concurrent_valiate_tuple, \
zip_args=False)
def test_execute_concurrent_with_execution_profile(self):
def run_fn(*args, **kwargs):
return self.execute_concurrent_helper(*args, execution_profile=EXEC_PROFILE_DICT, **kwargs)
self.execute_concurrent_base(run_fn, self.execute_concurrent_valiate_dict)
def test_execute_concurrent_with_args_and_execution_profile(self):
def run_fn(*args, **kwargs):
return self.execute_concurrent_args_helper(*args, execution_profile=EXEC_PROFILE_DICT, **kwargs)
self.execute_concurrent_base(run_fn, self.execute_concurrent_valiate_dict, zip_args=False)
def test_execute_concurrent_with_args_generator(self):
"""
Test to validate that generator based results are surfaced correctly
Repeatedly inserts data into a a table and attempts to query it. It then validates that the
results are returned in the order expected
@since 2.7.0
@jira_ticket PYTHON-123
@expected_result all data should be returned in order.
@test_category queries:async
"""
for num_statements in (0, 1, 2, 7, 10, 99, 100, 101, 199, 200, 201):
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
parameters = [(i, i) for i in range(num_statements)]
results = self.execute_concurrent_args_helper(self.session, statement, parameters, results_generator=True)
for success, result in results:
self.assertTrue(success)
self.assertFalse(result)
results = self.execute_concurrent_args_helper(self.session, statement, parameters, results_generator=True)
for result in results:
self.assertTrue(isinstance(result, ExecutionResult))
self.assertTrue(result.success)
self.assertFalse(result.result_or_exc)
# read
statement = SimpleStatement(
"SELECT v FROM test3rf.test WHERE k=%s",
consistency_level=ConsistencyLevel.QUORUM)
parameters = [(i, ) for i in range(num_statements)]
results = self.execute_concurrent_args_helper(self.session, statement, parameters, results_generator=True)
for i in range(num_statements):
result = next(results)
self.assertEqual((True, [(i,)]), result)
self.assertRaises(StopIteration, next, results)
def test_execute_concurrent_paged_result(self):
if PROTOCOL_VERSION < 2:
raise unittest.SkipTest(
"Protocol 2+ is required for Paging, currently testing against %r"
% (PROTOCOL_VERSION,))
num_statements = 201
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
parameters = [(i, i) for i in range(num_statements)]
results = self.execute_concurrent_args_helper(self.session, statement, parameters)
self.assertEqual(num_statements, len(results))
for success, result in results:
self.assertTrue(success)
self.assertFalse(result)
# read
statement = SimpleStatement(
"SELECT * FROM test3rf.test LIMIT %s",
consistency_level=ConsistencyLevel.QUORUM,
fetch_size=int(num_statements / 2))
results = self.execute_concurrent_args_helper(self.session, statement, [(num_statements,)])
self.assertEqual(1, len(results))
self.assertTrue(results[0][0])
result = results[0][1]
self.assertTrue(result.has_more_pages)
self.assertEqual(num_statements, sum(1 for _ in result))
def test_execute_concurrent_paged_result_generator(self):
"""
Test to validate that generator based results are surfaced correctly when paging is used
Inserts data into a a table and attempts to query it. It then validates that the
results are returned as expected (no order specified)
@since 2.7.0
@jira_ticket PYTHON-123
@expected_result all data should be returned in order.
@test_category paging
"""
if PROTOCOL_VERSION < 2:
raise unittest.SkipTest(
"Protocol 2+ is required for Paging, currently testing against %r"
% (PROTOCOL_VERSION,))
num_statements = 201
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
parameters = [(i, i) for i in range(num_statements)]
results = self.execute_concurrent_args_helper(self.session, statement, parameters, results_generator=True)
self.assertEqual(num_statements, sum(1 for _ in results))
# read
statement = SimpleStatement(
"SELECT * FROM test3rf.test LIMIT %s",
consistency_level=ConsistencyLevel.QUORUM,
fetch_size=int(num_statements / 2))
paged_results_gen = self.execute_concurrent_args_helper(self.session, statement, [(num_statements,)], results_generator=True)
# iterate over all the result and make sure we find the correct number.
found_results = 0
for result_tuple in paged_results_gen:
paged_result = result_tuple[1]
for _ in paged_result:
found_results += 1
self.assertEqual(found_results, num_statements)
def test_first_failure(self):
statements = cycle(("INSERT INTO test3rf.test (k, v) VALUES (%s, %s)", ))
parameters = [(i, i) for i in range(100)]
# we'll get an error back from the server
parameters[57] = ('efefef', 'awefawefawef')
self.assertRaises(
InvalidRequest,
execute_concurrent, self.session, list(zip(statements, parameters)), raise_on_first_error=True)
def test_first_failure_client_side(self):
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
statements = cycle((statement, ))
parameters = [(i, i) for i in range(100)]
# the driver will raise an error when binding the params
parameters[57] = 1
self.assertRaises(
TypeError,
execute_concurrent, self.session, list(zip(statements, parameters)), raise_on_first_error=True)
def test_no_raise_on_first_failure(self):
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
statements = cycle((statement, ))
parameters = [(i, i) for i in range(100)]
# we'll get an error back from the server
parameters[57] = ('efefef', 'awefawefawef')
results = execute_concurrent(self.session, list(zip(statements, parameters)), raise_on_first_error=False)
for i, (success, result) in enumerate(results):
if i == 57:
self.assertFalse(success)
self.assertIsInstance(result, InvalidRequest)
else:
self.assertTrue(success)
self.assertFalse(result)
def test_no_raise_on_first_failure_client_side(self):
statement = SimpleStatement(
"INSERT INTO test3rf.test (k, v) VALUES (%s, %s)",
consistency_level=ConsistencyLevel.QUORUM)
statements = cycle((statement, ))
parameters = [(i, i) for i in range(100)]
# the driver will raise an error when binding the params
parameters[57] = 1
results = execute_concurrent(self.session, list(zip(statements, parameters)), raise_on_first_error=False)
for i, (success, result) in enumerate(results):
if i == 57:
self.assertFalse(success)
self.assertIsInstance(result, TypeError)
else:
self.assertTrue(success)
self.assertFalse(result)
|
