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
|
# Copyright (c) 2010-2013 OpenStack, LLC.
#
# 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 queue import Queue, Empty
import sys
import unittest
import threading
from concurrent.futures import as_completed
from time import sleep
from swiftclient import multithreading as mt
from .utils import CaptureStream
class ThreadTestCase(unittest.TestCase):
def setUp(self):
super(ThreadTestCase, self).setUp()
self.got_items = Queue()
self.got_args_kwargs = Queue()
self.starting_thread_count = threading.active_count()
def _func(self, conn, item, *args, **kwargs):
self.got_items.put((conn, item))
self.got_args_kwargs.put((args, kwargs))
if item == 'sleep':
sleep(.1)
if item == 'go boom':
raise Exception('I went boom!')
return 'success'
def _create_conn(self):
return "This is a connection"
def _create_conn_fail(self):
raise Exception("This is a failed connection")
def assertQueueContains(self, queue, expected_contents):
got_contents = []
try:
while True:
got_contents.append(queue.get(timeout=0.1))
except Empty:
pass
if isinstance(expected_contents, set):
got_contents = set(got_contents)
self.assertEqual(expected_contents, got_contents)
class TestConnectionThreadPoolExecutor(ThreadTestCase):
def setUp(self):
super(TestConnectionThreadPoolExecutor, self).setUp()
self.input_queue = Queue()
self.stored_results = []
def tearDown(self):
super(TestConnectionThreadPoolExecutor, self).tearDown()
def test_submit_good_connection(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 1)
with ctpe as pool:
# Try submitting a job that should succeed
f = pool.submit(self._func, "succeed")
f.result()
self.assertQueueContains(
self.got_items,
[("This is a connection", "succeed")]
)
# Now a job that fails
try:
f = pool.submit(self._func, "go boom")
f.result()
except Exception as e:
self.assertEqual('I went boom!', str(e))
else:
self.fail('I never went boom!')
# Has the connection been returned to the pool?
f = pool.submit(self._func, "succeed")
f.result()
self.assertQueueContains(
self.got_items,
[
("This is a connection", "go boom"),
("This is a connection", "succeed")
]
)
def test_submit_bad_connection(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn_fail, 1)
with ctpe as pool:
# Now a connection that fails
try:
f = pool.submit(self._func, "succeed")
f.result()
except Exception as e:
self.assertEqual('This is a failed connection', str(e))
else:
self.fail('The connection did not fail')
# Make sure we don't lock up on failed connections
try:
f = pool.submit(self._func, "go boom")
f.result()
except Exception as e:
self.assertEqual('This is a failed connection', str(e))
else:
self.fail('The connection did not fail')
def test_lazy_connections(self):
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 10)
with ctpe as pool:
# Submit multiple jobs sequentially - should only use 1 conn
f = pool.submit(self._func, "succeed")
f.result()
f = pool.submit(self._func, "succeed")
f.result()
f = pool.submit(self._func, "succeed")
f.result()
expected_connections = [(0, "This is a connection")]
expected_connections.extend([(x, None) for x in range(1, 10)])
self.assertQueueContains(
pool._connections, expected_connections
)
ctpe = mt.ConnectionThreadPoolExecutor(self._create_conn, 10)
with ctpe as pool:
fs = []
f1 = pool.submit(self._func, "sleep")
f2 = pool.submit(self._func, "sleep")
f3 = pool.submit(self._func, "sleep")
fs.extend([f1, f2, f3])
expected_connections = [
(0, "This is a connection"),
(1, "This is a connection"),
(2, "This is a connection")
]
expected_connections.extend([(x, None) for x in range(3, 10)])
for f in as_completed(fs):
f.result()
self.assertQueueContains(
pool._connections, expected_connections
)
class TestOutputManager(unittest.TestCase):
def test_instantiation(self):
output_manager = mt.OutputManager()
self.assertEqual(sys.stdout, output_manager.print_stream)
self.assertEqual(sys.stderr, output_manager.error_stream)
def test_printers(self):
out_stream = CaptureStream(sys.stdout)
err_stream = CaptureStream(sys.stderr)
starting_thread_count = threading.active_count()
with mt.OutputManager(
print_stream=out_stream,
error_stream=err_stream) as thread_manager:
# Sanity-checking these gives power to the previous test which
# looked at the default values of thread_manager.print/error_stream
self.assertEqual(out_stream, thread_manager.print_stream)
self.assertEqual(err_stream, thread_manager.error_stream)
# No printing has happened yet, so no new threads
self.assertEqual(starting_thread_count,
threading.active_count())
thread_manager.print_msg('one-argument')
thread_manager.print_msg('one %s, %d fish', 'fish', 88)
thread_manager.error('I have %d problems, but a %s is not one',
99, '\u062A\u062A')
thread_manager.print_msg('some\n%s\nover the %r', 'where',
'\u062A\u062A')
thread_manager.error('one-error-argument')
thread_manager.error('Sometimes\n%.1f%% just\ndoes not\nwork!',
3.14159)
thread_manager.print_raw(
'some raw bytes: \u062A\u062A'.encode('utf-8'))
thread_manager.print_items([
('key', 'value'),
('object', 'O\u0308bject'),
])
thread_manager.print_raw(b'\xffugly\xffraw')
# Now we have a thread for error printing and a thread for
# normal print messages
self.assertEqual(starting_thread_count + 2,
threading.active_count())
# The threads should have been cleaned up
self.assertEqual(starting_thread_count, threading.active_count())
over_the = "over the '\u062a\u062a'\n"
self.assertEqual(''.join([
'one-argument\n',
'one fish, 88 fish\n',
'some\n', 'where\n',
over_the,
'some raw bytes: \u062a\u062a',
' key: value\n',
' object: O\u0308bject\n'
]).encode('utf8') + b'\xffugly\xffraw', out_stream.getvalue())
self.assertEqual(''.join([
'I have 99 problems, but a \u062A\u062A is not one\n',
'one-error-argument\n',
'Sometimes\n', '3.1% just\n', 'does not\n', 'work!\n'
]), err_stream.getvalue().decode('utf8'))
self.assertEqual(3, thread_manager.error_count)
|
