« back to all changes in this revision
Viewing changes to bzrlib/tests/test_smart_transport.py
- browse files at revision 3427.5.4
- compare with another revision
- compare with revision 1185.56.1
- download diff
- download tarball
- view history from revision 3427.5.4
- Committer: John Arbash Meinel
- Date: 2008-05-28 21:53:46 UTC
- mfrom: (3453 +trunk)
- mto: This revision was merged to the branch mainline in revision 3458.
- Revision ID: john@arbash-meinel.com-20080528215346-l8plys9h9ps624pn
merge bzr.dev
- files added:
- bzrlib/smart/message.py
- doc/es
- doc/es/guia-desarrollador
- doc/es/guia-usuario
- doc/es/mini-tutorial
- doc/es/notas-version
- doc/es/referencia
- doc/es/referencia-rapida
- files modified:
- Makefile
added
removed
bzrlib/tests/test_smart_transport.py
21
21
import os
22
22
import socket
23
23
import threading
24
import urllib2
25
24
25
import bzrlib
26
26
from bzrlib import (
27
27
bzrdir,
28
28
errors,
33
33
from bzrlib.smart import (
34
34
client,
35
35
medium,
36
message,
36
37
protocol,
37
38
request as _mod_request,
38
39
server,
39
40
vfs,
40
41
)
41
from bzrlib.tests.http_utils import (
42
HTTPServerWithSmarts,
43
SmartRequestHandler,
44
)
45
42
from bzrlib.tests.test_smart import TestCaseWithSmartMedium
46
43
from bzrlib.transport import (
47
44
get_transport,
118
115
sock.bind(('127.0.0.1', 0))
119
116
sock.listen(1)
120
117
port = sock.getsockname()[1]
121
client_medium = medium.SmartTCPClientMedium('127.0.0.1', port)
118
client_medium = medium.SmartTCPClientMedium('127.0.0.1', port, 'base')
122
119
return sock, client_medium
123
120
124
121
def receive_bytes_on_server(self, sock, bytes):
136
133
t.start()
137
134
return t
138
135
139
def test_construct_smart_stream_medium_client(self):
140
# make a new instance of the common base for Stream-like Mediums.
141
# this just ensures that the constructor stays parameter-free which
142
# is important for reuse : some subclasses will dynamically connect,
143
# others are always on, etc.
144
client_medium = medium.SmartClientStreamMedium()
145
146
def test_construct_smart_client_medium(self):
147
# the base client medium takes no parameters
148
client_medium = medium.SmartClientMedium()
149
150
136
def test_construct_smart_simple_pipes_client_medium(self):
151
137
# the SimplePipes client medium takes two pipes:
152
138
# readable pipe, writeable pipe.
153
139
# Constructing one should just save these and do nothing.
154
140
# We test this by passing in None.
155
client_medium = medium.SmartSimplePipesClientMedium(None, None)
141
client_medium = medium.SmartSimplePipesClientMedium(None, None, None)
156
142
157
143
def test_simple_pipes_client_request_type(self):
158
144
# SimplePipesClient should use SmartClientStreamMediumRequest's.
159
client_medium = medium.SmartSimplePipesClientMedium(None, None)
145
client_medium = medium.SmartSimplePipesClientMedium(None, None, None)
160
146
request = client_medium.get_request()
161
147
self.assertIsInstance(request, medium.SmartClientStreamMediumRequest)
162
148
168
154
# classes - as the sibling classes share this logic, they do not have
169
155
# explicit tests for this.
170
156
output = StringIO()
171
client_medium = medium.SmartSimplePipesClientMedium(None, output)
157
client_medium = medium.SmartSimplePipesClientMedium(
158
None, output, 'base')
172
159
request = client_medium.get_request()
173
160
request.finished_writing()
174
161
request.finished_reading()
179
166
def test_simple_pipes_client__accept_bytes_writes_to_writable(self):
180
167
# accept_bytes writes to the writeable pipe.
181
168
output = StringIO()
182
client_medium = medium.SmartSimplePipesClientMedium(None, output)
169
client_medium = medium.SmartSimplePipesClientMedium(
170
None, output, 'base')
183
171
client_medium._accept_bytes('abc')
184
172
self.assertEqual('abc', output.getvalue())
185
173
187
175
# calling disconnect does nothing.
188
176
input = StringIO()
189
177
output = StringIO()
190
client_medium = medium.SmartSimplePipesClientMedium(input, output)
178
client_medium = medium.SmartSimplePipesClientMedium(
179
input, output, 'base')
191
180
# send some bytes to ensure disconnecting after activity still does not
192
181
# close.
193
182
client_medium._accept_bytes('abc')
200
189
# accept_bytes writes to.
201
190
input = StringIO()
202
191
output = StringIO()
203
client_medium = medium.SmartSimplePipesClientMedium(input, output)
192
client_medium = medium.SmartSimplePipesClientMedium(
193
input, output, 'base')
204
194
client_medium._accept_bytes('abc')
205
195
client_medium.disconnect()
206
196
client_medium._accept_bytes('abc')
211
201
def test_simple_pipes_client_ignores_disconnect_when_not_connected(self):
212
202
# Doing a disconnect on a new (and thus unconnected) SimplePipes medium
213
203
# does nothing.
214
client_medium = medium.SmartSimplePipesClientMedium(None, None)
204
client_medium = medium.SmartSimplePipesClientMedium(None, None, 'base')
215
205
client_medium.disconnect()
216
206
217
207
def test_simple_pipes_client_can_always_read(self):
218
208
# SmartSimplePipesClientMedium is never disconnected, so read_bytes
219
209
# always tries to read from the underlying pipe.
220
210
input = StringIO('abcdef')
221
client_medium = medium.SmartSimplePipesClientMedium(input, None)
211
client_medium = medium.SmartSimplePipesClientMedium(input, None, 'base')
222
212
self.assertEqual('abc', client_medium.read_bytes(3))
223
213
client_medium.disconnect()
224
214
self.assertEqual('def', client_medium.read_bytes(3))
233
223
flush_calls = []
234
224
def logging_flush(): flush_calls.append('flush')
235
225
output.flush = logging_flush
236
client_medium = medium.SmartSimplePipesClientMedium(input, output)
226
client_medium = medium.SmartSimplePipesClientMedium(
227
input, output, 'base')
237
228
# this call is here to ensure we only flush once, not on every
238
229
# _accept_bytes call.
239
230
client_medium._accept_bytes('abc')
253
244
# having vendor be invalid means that if it tries to connect via the
254
245
# vendor it will blow up.
255
246
client_medium = medium.SmartSSHClientMedium('127.0.0.1', unopened_port,
256
username=None, password=None, vendor="not a vendor",
247
username=None, password=None, base='base', vendor="not a vendor",
257
248
bzr_remote_path='bzr')
258
249
sock.close()
259
250
263
254
output = StringIO()
264
255
vendor = StringIOSSHVendor(StringIO(), output)
265
256
client_medium = medium.SmartSSHClientMedium(
266
'a hostname', 'a port', 'a username', 'a password', vendor, 'bzr')
257
'a hostname', 'a port', 'a username', 'a password', 'base', vendor,
258
'bzr')
267
259
client_medium._accept_bytes('abc')
268
260
self.assertEqual('abc', output.getvalue())
269
261
self.assertEqual([('connect_ssh', 'a username', 'a password',
284
276
client_medium = self.callDeprecated(
285
277
['bzr_remote_path is required as of bzr 0.92'],
286
278
medium.SmartSSHClientMedium, 'a hostname', 'a port', 'a username',
287
'a password', vendor)
279
'a password', 'base', vendor)
288
280
client_medium._accept_bytes('abc')
289
281
self.assertEqual('abc', output.getvalue())
290
282
self.assertEqual([('connect_ssh', 'a username', 'a password',
298
290
output = StringIO()
299
291
vendor = StringIOSSHVendor(StringIO(), output)
300
292
client_medium = medium.SmartSSHClientMedium('a hostname', 'a port',
301
'a username', 'a password', vendor, bzr_remote_path='fugly')
293
'a username', 'a password', 'base', vendor, bzr_remote_path='fugly')
302
294
client_medium._accept_bytes('abc')
303
295
self.assertEqual('abc', output.getvalue())
304
296
self.assertEqual([('connect_ssh', 'a username', 'a password',
312
304
input = StringIO()
313
305
output = StringIO()
314
306
vendor = StringIOSSHVendor(input, output)
315
client_medium = medium.SmartSSHClientMedium('a hostname',
316
vendor=vendor,
317
bzr_remote_path='bzr')
307
client_medium = medium.SmartSSHClientMedium(
308
'a hostname', base='base', vendor=vendor, bzr_remote_path='bzr')
318
309
client_medium._accept_bytes('abc')
319
310
client_medium.disconnect()
320
311
self.assertTrue(input.closed)
334
325
input = StringIO()
335
326
output = StringIO()
336
327
vendor = StringIOSSHVendor(input, output)
337
client_medium = medium.SmartSSHClientMedium('a hostname',
338
vendor=vendor, bzr_remote_path='bzr')
328
client_medium = medium.SmartSSHClientMedium(
329
'a hostname', base='base', vendor=vendor, bzr_remote_path='bzr')
339
330
client_medium._accept_bytes('abc')
340
331
client_medium.disconnect()
341
332
# the disconnect has closed output, so we need a new output for the
363
354
def test_ssh_client_ignores_disconnect_when_not_connected(self):
364
355
# Doing a disconnect on a new (and thus unconnected) SSH medium
365
356
# does not fail. It's ok to disconnect an unconnected medium.
366
client_medium = medium.SmartSSHClientMedium(None,
367
bzr_remote_path='bzr')
357
client_medium = medium.SmartSSHClientMedium(
358
None, base='base', bzr_remote_path='bzr')
368
359
client_medium.disconnect()
369
360
370
361
def test_ssh_client_raises_on_read_when_not_connected(self):
371
362
# Doing a read on a new (and thus unconnected) SSH medium raises
372
363
# MediumNotConnected.
373
client_medium = medium.SmartSSHClientMedium(None,
374
bzr_remote_path='bzr')
364
client_medium = medium.SmartSSHClientMedium(
365
None, base='base', bzr_remote_path='bzr')
375
366
self.assertRaises(errors.MediumNotConnected, client_medium.read_bytes,
376
367
0)
377
368
self.assertRaises(errors.MediumNotConnected, client_medium.read_bytes,
388
379
def logging_flush(): flush_calls.append('flush')
389
380
output.flush = logging_flush
390
381
vendor = StringIOSSHVendor(input, output)
391
client_medium = medium.SmartSSHClientMedium('a hostname',
392
vendor=vendor,
393
bzr_remote_path='bzr')
382
client_medium = medium.SmartSSHClientMedium(
383
'a hostname', base='base', vendor=vendor, bzr_remote_path='bzr')
394
384
# this call is here to ensure we only flush once, not on every
395
385
# _accept_bytes call.
396
386
client_medium._accept_bytes('abc')
404
394
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
405
395
sock.bind(('127.0.0.1', 0))
406
396
unopened_port = sock.getsockname()[1]
407
client_medium = medium.SmartTCPClientMedium('127.0.0.1', unopened_port)
397
client_medium = medium.SmartTCPClientMedium(
398
'127.0.0.1', unopened_port, 'base')
408
399
sock.close()
409
400
410
401
def test_tcp_client_connects_on_first_use(self):
438
429
def test_tcp_client_ignores_disconnect_when_not_connected(self):
439
430
# Doing a disconnect on a new (and thus unconnected) TCP medium
440
431
# does not fail. It's ok to disconnect an unconnected medium.
441
client_medium = medium.SmartTCPClientMedium(None, None)
432
client_medium = medium.SmartTCPClientMedium(None, None, None)
442
433
client_medium.disconnect()
443
434
444
435
def test_tcp_client_raises_on_read_when_not_connected(self):
445
436
# Doing a read on a new (and thus unconnected) TCP medium raises
446
437
# MediumNotConnected.
447
client_medium = medium.SmartTCPClientMedium(None, None)
438
client_medium = medium.SmartTCPClientMedium(None, None, None)
448
439
self.assertRaises(errors.MediumNotConnected, client_medium.read_bytes, 0)
449
440
self.assertRaises(errors.MediumNotConnected, client_medium.read_bytes, 1)
450
441
470
461
def test_tcp_client_host_unknown_connection_error(self):
471
462
self.requireFeature(InvalidHostnameFeature)
472
463
client_medium = medium.SmartTCPClientMedium(
473
'non_existent.invalid', 4155)
464
'non_existent.invalid', 4155, 'base')
474
465
self.assertRaises(
475
466
errors.ConnectionError, client_medium._ensure_connection)
476
467
488
479
# WritingCompleted to prevent bad assumptions on stream environments
489
480
# breaking the needs of message-based environments.
490
481
output = StringIO()
491
client_medium = medium.SmartSimplePipesClientMedium(None, output)
482
client_medium = medium.SmartSimplePipesClientMedium(
483
None, output, 'base')
492
484
request = medium.SmartClientStreamMediumRequest(client_medium)
493
485
request.finished_writing()
494
486
self.assertRaises(errors.WritingCompleted, request.accept_bytes, None)
499
491
# and checking that the pipes get the data.
500
492
input = StringIO()
501
493
output = StringIO()
502
client_medium = medium.SmartSimplePipesClientMedium(input, output)
494
client_medium = medium.SmartSimplePipesClientMedium(
495
input, output, 'base')
503
496
request = medium.SmartClientStreamMediumRequest(client_medium)
504
497
request.accept_bytes('123')
505
498
request.finished_writing()
511
504
# constructing a SmartClientStreamMediumRequest on a StreamMedium sets
512
505
# the current request to the new SmartClientStreamMediumRequest
513
506
output = StringIO()
514
client_medium = medium.SmartSimplePipesClientMedium(None, output)
507
client_medium = medium.SmartSimplePipesClientMedium(
508
None, output, 'base')
515
509
request = medium.SmartClientStreamMediumRequest(client_medium)
516
510
self.assertIs(client_medium._current_request, request)
517
511
519
513
# constructing a SmartClientStreamMediumRequest on a StreamMedium with
520
514
# a non-None _current_request raises TooManyConcurrentRequests.
521
515
output = StringIO()
522
client_medium = medium.SmartSimplePipesClientMedium(None, output)
516
client_medium = medium.SmartSimplePipesClientMedium(
517
None, output, 'base')
523
518
client_medium._current_request = "a"
524
519
self.assertRaises(errors.TooManyConcurrentRequests,
525
520
medium.SmartClientStreamMediumRequest, client_medium)
528
523
# calling finished_reading clears the current request from the requests
529
524
# medium
530
525
output = StringIO()
531
client_medium = medium.SmartSimplePipesClientMedium(None, output)
526
client_medium = medium.SmartSimplePipesClientMedium(
527
None, output, 'base')
532
528
request = medium.SmartClientStreamMediumRequest(client_medium)
533
529
request.finished_writing()
534
530
request.finished_reading()
537
533
def test_finished_read_before_finished_write_errors(self):
538
534
# calling finished_reading before calling finished_writing triggers a
539
535
# WritingNotComplete error.
540
client_medium = medium.SmartSimplePipesClientMedium(None, None)
536
client_medium = medium.SmartSimplePipesClientMedium(
537
None, None, 'base')
541
538
request = medium.SmartClientStreamMediumRequest(client_medium)
542
539
self.assertRaises(errors.WritingNotComplete, request.finished_reading)
543
540
550
547
# smoke tests.
551
548
input = StringIO('321')
552
549
output = StringIO()
553
client_medium = medium.SmartSimplePipesClientMedium(input, output)
550
client_medium = medium.SmartSimplePipesClientMedium(
551
input, output, 'base')
554
552
request = medium.SmartClientStreamMediumRequest(client_medium)
555
553
request.finished_writing()
556
554
self.assertEqual('321', request.read_bytes(3))
563
561
# WritingNotComplete error because the Smart protocol is designed to be
564
562
# compatible with strict message based protocols like HTTP where the
565
563
# request cannot be submitted until the writing has completed.
566
client_medium = medium.SmartSimplePipesClientMedium(None, None)
564
client_medium = medium.SmartSimplePipesClientMedium(None, None, 'base')
567
565
request = medium.SmartClientStreamMediumRequest(client_medium)
568
566
self.assertRaises(errors.WritingNotComplete, request.read_bytes, None)
569
567
572
570
# ReadingCompleted to prevent bad assumptions on stream environments
573
571
# breaking the needs of message-based environments.
574
572
output = StringIO()
575
client_medium = medium.SmartSimplePipesClientMedium(None, output)
573
client_medium = medium.SmartSimplePipesClientMedium(
574
None, output, 'base')
576
575
request = medium.SmartClientStreamMediumRequest(client_medium)
577
576
request.finished_writing()
578
577
request.finished_reading()
610
609
self.accepted_bytes = ''
611
610
self._finished_reading = False
612
611
self.expected_bytes = expected_bytes
613
self.excess_buffer = ''
612
self.unused_data = ''
614
613
615
614
def accept_bytes(self, bytes):
616
615
self.accepted_bytes += bytes
617
616
if self.accepted_bytes.startswith(self.expected_bytes):
618
617
self._finished_reading = True
619
self.excess_buffer = self.accepted_bytes[len(self.expected_bytes):]
618
self.unused_data = self.accepted_bytes[len(self.expected_bytes):]
620
619
621
620
def next_read_size(self):
622
621
if self._finished_reading:
944
943
# A request that starts with "bzr request 2\n" is version two.
945
944
server_protocol = self.build_protocol_socket('bzr request 2\n')
946
945
self.assertProtocolTwo(server_protocol)
946
947
948
class TestGetProtocolFactoryForBytes(tests.TestCase):
949
"""_get_protocol_factory_for_bytes identifies the protocol factory a server
950
should use to decode a given request. Any bytes not part of the version
951
marker string (and thus part of the actual request) are returned alongside
952
the protocol factory.
953
"""
954
955
def test_version_three(self):
956
result = medium._get_protocol_factory_for_bytes(
957
'bzr message 3 (bzr 1.6)\nextra bytes')
958
protocol_factory, remainder = result
959
self.assertEqual(
960
protocol.build_server_protocol_three, protocol_factory)
961
self.assertEqual('extra bytes', remainder)
962
963
def test_version_two(self):
964
result = medium._get_protocol_factory_for_bytes(
965
'bzr request 2\nextra bytes')
966
protocol_factory, remainder = result
967
self.assertEqual(
968
protocol.SmartServerRequestProtocolTwo, protocol_factory)
969
self.assertEqual('extra bytes', remainder)
970
971
def test_version_one(self):
972
"""Version one requests have no version markers."""
973
result = medium._get_protocol_factory_for_bytes('anything\n')
974
protocol_factory, remainder = result
975
self.assertEqual(
976
protocol.SmartServerRequestProtocolOne, protocol_factory)
977
self.assertEqual('anything\n', remainder)
947
978
948
979
949
980
class TestSmartTCPServer(tests.TestCase):
958
989
def get_bytes(self, path):
959
990
raise Exception("some random exception from inside server")
960
991
smart_server = server.SmartTCPServer(backing_transport=FlakyTransport())
961
smart_server.start_background_thread()
992
smart_server.start_background_thread('-' + self.id())
962
993
try:
963
994
transport = remote.RemoteTCPTransport(smart_server.get_url())
964
995
try:
994
1025
self.real_backing_transport = self.backing_transport
995
1026
self.backing_transport = get_transport("readonly+" + self.backing_transport.abspath('.'))
996
1027
self.server = server.SmartTCPServer(self.backing_transport)
997
self.server.start_background_thread()
1028
self.server.start_background_thread('-' + self.id())
998
1029
self.transport = remote.RemoteTCPTransport(self.server.get_url())
999
1030
self.addCleanup(self.tearDownServer)
1000
1031
1202
1233
and the request dispatching.
1203
1234
1204
1235
Note: these tests are rudimentary versions of the command object tests in
1205
test_remote.py.
1236
test_smart.py.
1206
1237
"""
1207
1238
1208
1239
def test_hello(self):
1341
1372
1342
1373
def test_use_connection_factory(self):
1343
1374
# We want to be able to pass a client as a parameter to RemoteTransport.
1344
input = StringIO("ok\n3\nbardone\n")
1375
input = StringIO('ok\n3\nbardone\n')
1345
1376
output = StringIO()
1346
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1377
client_medium = medium.SmartSimplePipesClientMedium(
1378
input, output, 'base')
1347
1379
transport = remote.RemoteTransport(
1348
1380
'bzr://localhost/', medium=client_medium)
1381
# Disable version detection.
1382
client_medium._protocol_version = 1
1349
1383
1350
1384
# We want to make sure the client is used when the first remote
1351
1385
# method is called. No data should have been sent, or read.
1352
1386
self.assertEqual(0, input.tell())
1353
1387
self.assertEqual('', output.getvalue())
1354
1388
1355
# Now call a method that should result in a single request : as the
1389
# Now call a method that should result in one request: as the
1356
1390
# transport makes its own protocol instances, we check on the wire.
1357
1391
# XXX: TODO: give the transport a protocol factory, which can make
1358
1392
# an instrumented protocol for us.
1363
1397
1364
1398
def test__translate_error_readonly(self):
1365
1399
"""Sending a ReadOnlyError to _translate_error raises TransportNotPossible."""
1366
client_medium = medium.SmartClientMedium()
1400
client_medium = medium.SmartSimplePipesClientMedium(None, None, 'base')
1367
1401
transport = remote.RemoteTransport(
1368
1402
'bzr://localhost/', medium=client_medium)
1369
1403
self.assertRaises(errors.TransportNotPossible,
1385
1419
Subclasses can override client_protocol_class and server_protocol_class.
1386
1420
"""
1387
1421
1422
request_encoder = None
1423
response_decoder = None
1424
server_protocol_class = None
1388
1425
client_protocol_class = None
1389
server_protocol_class = None
1390
1426
1391
def make_client_protocol(self):
1427
def make_client_protocol_and_output(self, input_bytes=None):
1428
"""
1429
:returns: a Request
1430
"""
1431
# This is very similar to
1432
# bzrlib.smart.client._SmartClient._build_client_protocol
1433
# XXX: make this use _SmartClient!
1434
if input_bytes is None:
1435
input = StringIO()
1436
else:
1437
input = StringIO(input_bytes)
1438
output = StringIO()
1392
1439
client_medium = medium.SmartSimplePipesClientMedium(
1393
StringIO(), StringIO())
1394
return self.client_protocol_class(client_medium.get_request())
1440
input, output, 'base')
1441
request = client_medium.get_request()
1442
if self.client_protocol_class is not None:
1443
client_protocol = self.client_protocol_class(request)
1444
return client_protocol, client_protocol, output
1445
else:
1446
self.assertNotEqual(None, self.request_encoder)
1447
self.assertNotEqual(None, self.response_decoder)
1448
requester = self.request_encoder(request)
1449
response_handler = message.ConventionalResponseHandler()
1450
response_protocol = self.response_decoder(
1451
response_handler, expect_version_marker=True)
1452
response_handler.setProtoAndMediumRequest(
1453
response_protocol, request)
1454
return requester, response_handler, output
1455
1456
def make_client_protocol(self, input_bytes=None):
1457
result = self.make_client_protocol_and_output(input_bytes=input_bytes)
1458
requester, response_handler, output = result
1459
return requester, response_handler
1395
1460
1396
1461
def make_server_protocol(self):
1397
1462
out_stream = StringIO()
1398
1463
smart_protocol = self.server_protocol_class(None, out_stream.write)
1399
1464
return smart_protocol, out_stream
1400
1465
1466
def setUp(self):
1467
super(TestSmartProtocol, self).setUp()
1468
self.response_marker = getattr(
1469
self.client_protocol_class, 'response_marker', None)
1470
self.request_marker = getattr(
1471
self.client_protocol_class, 'request_marker', None)
1472
1401
1473
def assertOffsetSerialisation(self, expected_offsets, expected_serialised,
1402
client):
1474
requester):
1403
1475
"""Check that smart (de)serialises offsets as expected.
1404
1476
1405
1477
We check both serialisation and deserialisation at the same time
1414
1486
readv_cmd = vfs.ReadvRequest(None, '/')
1415
1487
offsets = readv_cmd._deserialise_offsets(expected_serialised)
1416
1488
self.assertEqual(expected_offsets, offsets)
1417
serialised = client._serialise_offsets(offsets)
1489
serialised = requester._serialise_offsets(offsets)
1418
1490
self.assertEqual(expected_serialised, serialised)
1419
1491
1420
1492
def build_protocol_waiting_for_body(self):
1421
1493
smart_protocol, out_stream = self.make_server_protocol()
1422
smart_protocol.has_dispatched = True
1494
smart_protocol._has_dispatched = True
1423
1495
smart_protocol.request = _mod_request.SmartServerRequestHandler(
1424
1496
None, _mod_request.request_handlers, '/')
1425
1497
class FakeCommand(object):
1448
1520
_mod_request.SuccessfulSmartServerResponse(input_tuple))
1449
1521
self.assertEqual(expected_bytes, server_output.getvalue())
1450
1522
# check the decoding of the client smart_protocol from expected_bytes:
1451
input = StringIO(expected_bytes)
1452
output = StringIO()
1453
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1454
request = client_medium.get_request()
1455
smart_protocol = self.client_protocol_class(request)
1456
smart_protocol.call('foo')
1457
self.assertEqual(expected_tuple, smart_protocol.read_response_tuple())
1523
requester, response_handler = self.make_client_protocol(expected_bytes)
1524
requester.call('foo')
1525
self.assertEqual(expected_tuple, response_handler.read_response_tuple())
1458
1526
1459
1527
1460
1528
class CommonSmartProtocolTestMixin(object):
1461
1529
1462
def test_errors_are_logged(self):
1463
"""If an error occurs during testing, it is logged to the test log."""
1464
smart_protocol, out_stream = self.make_server_protocol()
1465
# This triggers a "bad request" error.
1466
smart_protocol.accept_bytes('abc\n')
1467
test_log = self._get_log(keep_log_file=True)
1468
self.assertContainsRe(test_log, 'Traceback')
1469
self.assertContainsRe(test_log, 'SmartProtocolError')
1470
1471
1530
def test_connection_closed_reporting(self):
1472
smart_protocol = self.make_client_protocol()
1473
smart_protocol.call('hello')
1531
requester, response_handler = self.make_client_protocol()
1532
requester.call('hello')
1474
1533
ex = self.assertRaises(errors.ConnectionReset,
1475
smart_protocol.read_response_tuple)
1534
response_handler.read_response_tuple)
1476
1535
self.assertEqual("Connection closed: "
1477
1536
"please check connectivity and permissions "
1478
1537
"(and try -Dhpss if further diagnosis is required)", str(ex))
1484
1543
one with the order of reads not increasing (an out of order read), and
1485
1544
one that should coalesce.
1486
1545
"""
1487
client_protocol = self.make_client_protocol()
1488
self.assertOffsetSerialisation([], '', client_protocol)
1489
self.assertOffsetSerialisation([(1,2)], '1,2', client_protocol)
1546
requester, response_handler = self.make_client_protocol()
1547
self.assertOffsetSerialisation([], '', requester)
1548
self.assertOffsetSerialisation([(1,2)], '1,2', requester)
1490
1549
self.assertOffsetSerialisation([(10,40), (0,5)], '10,40\n0,5',
1491
client_protocol)
1550
requester)
1492
1551
self.assertOffsetSerialisation([(1,2), (3,4), (100, 200)],
1493
'1,2\n3,4\n100,200', client_protocol)
1494
1495
1496
class TestSmartProtocolOne(TestSmartProtocol, CommonSmartProtocolTestMixin):
1497
"""Tests for the smart protocol version one."""
1552
'1,2\n3,4\n100,200', requester)
1553
1554
1555
class TestVersionOneFeaturesInProtocolOne(
1556
TestSmartProtocol, CommonSmartProtocolTestMixin):
1557
"""Tests for version one smart protocol features as implemeted by version
1558
one."""
1498
1559
1499
1560
client_protocol_class = protocol.SmartClientRequestProtocolOne
1500
1561
server_protocol_class = protocol.SmartServerRequestProtocolOne
1501
1562
1502
1563
def test_construct_version_one_server_protocol(self):
1503
1564
smart_protocol = protocol.SmartServerRequestProtocolOne(None, None)
1504
self.assertEqual('', smart_protocol.excess_buffer)
1565
self.assertEqual('', smart_protocol.unused_data)
1505
1566
self.assertEqual('', smart_protocol.in_buffer)
1506
self.assertFalse(smart_protocol.has_dispatched)
1567
self.assertFalse(smart_protocol._has_dispatched)
1507
1568
self.assertEqual(1, smart_protocol.next_read_size())
1508
1569
1509
1570
def test_construct_version_one_client_protocol(self):
1510
1571
# we can construct a client protocol from a client medium request
1511
1572
output = StringIO()
1512
client_medium = medium.SmartSimplePipesClientMedium(None, output)
1573
client_medium = medium.SmartSimplePipesClientMedium(
1574
None, output, 'base')
1513
1575
request = client_medium.get_request()
1514
1576
client_protocol = protocol.SmartClientRequestProtocolOne(request)
1515
1577
1523
1585
self.assertEqual(
1524
1586
"error\x01Generic bzr smart protocol error: bad request 'abc'\n",
1525
1587
out_stream.getvalue())
1526
self.assertTrue(smart_protocol.has_dispatched)
1588
self.assertTrue(smart_protocol._has_dispatched)
1527
1589
self.assertEqual(0, smart_protocol.next_read_size())
1528
1590
1529
1591
def test_accept_body_bytes_to_protocol(self):
1546
1608
smart_protocol.accept_bytes('readv\x01foo\n3\n3,3done\n')
1547
1609
self.assertEqual(0, smart_protocol.next_read_size())
1548
1610
self.assertEqual('readv\n3\ndefdone\n', out_stream.getvalue())
1549
self.assertEqual('', smart_protocol.excess_buffer)
1611
self.assertEqual('', smart_protocol.unused_data)
1550
1612
self.assertEqual('', smart_protocol.in_buffer)
1551
1613
1552
1614
def test_accept_excess_bytes_are_preserved(self):
1555
1617
None, out_stream.write)
1556
1618
smart_protocol.accept_bytes('hello\nhello\n')
1557
1619
self.assertEqual("ok\x012\n", out_stream.getvalue())
1558
self.assertEqual("hello\n", smart_protocol.excess_buffer)
1620
self.assertEqual("hello\n", smart_protocol.unused_data)
1559
1621
self.assertEqual("", smart_protocol.in_buffer)
1560
1622
1561
1623
def test_accept_excess_bytes_after_body(self):
1562
1624
protocol = self.build_protocol_waiting_for_body()
1563
1625
protocol.accept_bytes('7\nabcdefgdone\nX')
1564
1626
self.assertTrue(self.end_received)
1565
self.assertEqual("X", protocol.excess_buffer)
1627
self.assertEqual("X", protocol.unused_data)
1566
1628
self.assertEqual("", protocol.in_buffer)
1567
1629
protocol.accept_bytes('Y')
1568
self.assertEqual("XY", protocol.excess_buffer)
1630
self.assertEqual("XY", protocol.unused_data)
1569
1631
self.assertEqual("", protocol.in_buffer)
1570
1632
1571
1633
def test_accept_excess_bytes_after_dispatch(self):
1575
1637
smart_protocol.accept_bytes('hello\n')
1576
1638
self.assertEqual("ok\x012\n", out_stream.getvalue())
1577
1639
smart_protocol.accept_bytes('hel')
1578
self.assertEqual("hel", smart_protocol.excess_buffer)
1640
self.assertEqual("hel", smart_protocol.unused_data)
1579
1641
smart_protocol.accept_bytes('lo\n')
1580
self.assertEqual("hello\n", smart_protocol.excess_buffer)
1642
self.assertEqual("hello\n", smart_protocol.unused_data)
1581
1643
self.assertEqual("", smart_protocol.in_buffer)
1582
1644
1583
1645
def test__send_response_sets_finished_reading(self):
1607
1669
# the error if the response is a non-understood version.
1608
1670
input = StringIO('ok\x012\n')
1609
1671
output = StringIO()
1610
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1672
client_medium = medium.SmartSimplePipesClientMedium(
1673
input, output, 'base')
1611
1674
request = client_medium.get_request()
1612
1675
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1613
1676
self.assertEqual(2, smart_protocol.query_version())
1630
1693
expected_bytes = "foo\n7\nabcdefgdone\n"
1631
1694
input = StringIO("\n")
1632
1695
output = StringIO()
1633
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1696
client_medium = medium.SmartSimplePipesClientMedium(
1697
input, output, 'base')
1634
1698
request = client_medium.get_request()
1635
1699
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1636
1700
smart_protocol.call_with_body_bytes(('foo', ), "abcdefg")
1642
1706
expected_bytes = "foo\n7\n1,2\n5,6done\n"
1643
1707
input = StringIO("\n")
1644
1708
output = StringIO()
1645
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1709
client_medium = medium.SmartSimplePipesClientMedium(
1710
input, output, 'base')
1646
1711
request = client_medium.get_request()
1647
1712
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1648
1713
smart_protocol.call_with_body_readv_array(('foo', ), [(1,2),(5,6)])
1652
1717
server_bytes):
1653
1718
input = StringIO(server_bytes)
1654
1719
output = StringIO()
1655
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1720
client_medium = medium.SmartSimplePipesClientMedium(
1721
input, output, 'base')
1656
1722
request = client_medium.get_request()
1657
1723
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1658
1724
smart_protocol.call('foo')
1690
1756
server_bytes = "ok\n7\n1234567done\n"
1691
1757
input = StringIO(server_bytes)
1692
1758
output = StringIO()
1693
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1759
client_medium = medium.SmartSimplePipesClientMedium(
1760
input, output, 'base')
1694
1761
request = client_medium.get_request()
1695
1762
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1696
1763
smart_protocol.call('foo')
1707
1774
server_bytes = "ok\n7\n1234567done\n"
1708
1775
input = StringIO(server_bytes)
1709
1776
output = StringIO()
1710
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1777
client_medium = medium.SmartSimplePipesClientMedium(
1778
input, output, 'base')
1711
1779
request = client_medium.get_request()
1712
1780
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1713
1781
smart_protocol.call('foo')
1724
1792
server_bytes = "ok\n7\n1234567done\n"
1725
1793
input = StringIO(server_bytes)
1726
1794
output = StringIO()
1727
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1795
client_medium = medium.SmartSimplePipesClientMedium(
1796
input, output, 'base')
1728
1797
request = client_medium.get_request()
1729
1798
smart_protocol = protocol.SmartClientRequestProtocolOne(request)
1730
1799
smart_protocol.call('foo')
1735
1804
errors.ReadingCompleted, smart_protocol.read_body_bytes)
1736
1805
1737
1806
1738
class TestSmartProtocolTwo(TestSmartProtocol, CommonSmartProtocolTestMixin):
1739
"""Tests for the smart protocol version two.
1740
1741
This test case is mostly the same as TestSmartProtocolOne.
1807
class TestVersionOneFeaturesInProtocolTwo(
1808
TestSmartProtocol, CommonSmartProtocolTestMixin):
1809
"""Tests for version one smart protocol features as implemeted by version
1810
two.
1742
1811
"""
1743
1812
1744
1813
client_protocol_class = protocol.SmartClientRequestProtocolTwo
1746
1815
1747
1816
def test_construct_version_two_server_protocol(self):
1748
1817
smart_protocol = protocol.SmartServerRequestProtocolTwo(None, None)
1749
self.assertEqual('', smart_protocol.excess_buffer)
1818
self.assertEqual('', smart_protocol.unused_data)
1750
1819
self.assertEqual('', smart_protocol.in_buffer)
1751
self.assertFalse(smart_protocol.has_dispatched)
1820
self.assertFalse(smart_protocol._has_dispatched)
1752
1821
self.assertEqual(1, smart_protocol.next_read_size())
1753
1822
1754
1823
def test_construct_version_two_client_protocol(self):
1755
1824
# we can construct a client protocol from a client medium request
1756
1825
output = StringIO()
1757
client_medium = medium.SmartSimplePipesClientMedium(None, output)
1826
client_medium = medium.SmartSimplePipesClientMedium(
1827
None, output, 'base')
1758
1828
request = client_medium.get_request()
1759
1829
client_protocol = protocol.SmartClientRequestProtocolTwo(request)
1760
1830
1831
def test_accept_bytes_of_bad_request_to_protocol(self):
1832
out_stream = StringIO()
1833
smart_protocol = self.server_protocol_class(None, out_stream.write)
1834
smart_protocol.accept_bytes('abc')
1835
self.assertEqual('abc', smart_protocol.in_buffer)
1836
smart_protocol.accept_bytes('\n')
1837
self.assertEqual(
1838
self.response_marker +
1839
"failed\nerror\x01Generic bzr smart protocol error: bad request 'abc'\n",
1840
out_stream.getvalue())
1841
self.assertTrue(smart_protocol._has_dispatched)
1842
self.assertEqual(0, smart_protocol.next_read_size())
1843
1844
def test_accept_body_bytes_to_protocol(self):
1845
protocol = self.build_protocol_waiting_for_body()
1846
self.assertEqual(6, protocol.next_read_size())
1847
protocol.accept_bytes('7\nabc')
1848
self.assertEqual(9, protocol.next_read_size())
1849
protocol.accept_bytes('defgd')
1850
protocol.accept_bytes('one\n')
1851
self.assertEqual(0, protocol.next_read_size())
1852
self.assertTrue(self.end_received)
1853
1854
def test_accept_request_and_body_all_at_once(self):
1855
self._captureVar('BZR_NO_SMART_VFS', None)
1856
mem_transport = memory.MemoryTransport()
1857
mem_transport.put_bytes('foo', 'abcdefghij')
1858
out_stream = StringIO()
1859
smart_protocol = self.server_protocol_class(
1860
mem_transport, out_stream.write)
1861
smart_protocol.accept_bytes('readv\x01foo\n3\n3,3done\n')
1862
self.assertEqual(0, smart_protocol.next_read_size())
1863
self.assertEqual(self.response_marker +
1864
'success\nreadv\n3\ndefdone\n',
1865
out_stream.getvalue())
1866
self.assertEqual('', smart_protocol.unused_data)
1867
self.assertEqual('', smart_protocol.in_buffer)
1868
1869
def test_accept_excess_bytes_are_preserved(self):
1870
out_stream = StringIO()
1871
smart_protocol = self.server_protocol_class(None, out_stream.write)
1872
smart_protocol.accept_bytes('hello\nhello\n')
1873
self.assertEqual(self.response_marker + "success\nok\x012\n",
1874
out_stream.getvalue())
1875
self.assertEqual("hello\n", smart_protocol.unused_data)
1876
self.assertEqual("", smart_protocol.in_buffer)
1877
1878
def test_accept_excess_bytes_after_body(self):
1879
# The excess bytes look like the start of another request.
1880
server_protocol = self.build_protocol_waiting_for_body()
1881
server_protocol.accept_bytes('7\nabcdefgdone\n' + self.response_marker)
1882
self.assertTrue(self.end_received)
1883
self.assertEqual(self.response_marker,
1884
server_protocol.unused_data)
1885
self.assertEqual("", server_protocol.in_buffer)
1886
server_protocol.accept_bytes('Y')
1887
self.assertEqual(self.response_marker + "Y",
1888
server_protocol.unused_data)
1889
self.assertEqual("", server_protocol.in_buffer)
1890
1891
def test_accept_excess_bytes_after_dispatch(self):
1892
out_stream = StringIO()
1893
smart_protocol = self.server_protocol_class(None, out_stream.write)
1894
smart_protocol.accept_bytes('hello\n')
1895
self.assertEqual(self.response_marker + "success\nok\x012\n",
1896
out_stream.getvalue())
1897
smart_protocol.accept_bytes(self.request_marker + 'hel')
1898
self.assertEqual(self.request_marker + "hel",
1899
smart_protocol.unused_data)
1900
smart_protocol.accept_bytes('lo\n')
1901
self.assertEqual(self.request_marker + "hello\n",
1902
smart_protocol.unused_data)
1903
self.assertEqual("", smart_protocol.in_buffer)
1904
1905
def test__send_response_sets_finished_reading(self):
1906
smart_protocol = self.server_protocol_class(None, lambda x: None)
1907
self.assertEqual(1, smart_protocol.next_read_size())
1908
smart_protocol._send_response(
1909
_mod_request.SuccessfulSmartServerResponse(('x',)))
1910
self.assertEqual(0, smart_protocol.next_read_size())
1911
1912
def test__send_response_errors_with_base_response(self):
1913
"""Ensure that only the Successful/Failed subclasses are used."""
1914
smart_protocol = self.server_protocol_class(None, lambda x: None)
1915
self.assertRaises(AttributeError, smart_protocol._send_response,
1916
_mod_request.SmartServerResponse(('x',)))
1917
1918
def test_query_version(self):
1919
"""query_version on a SmartClientProtocolTwo should return a number.
1920
1921
The protocol provides the query_version because the domain level clients
1922
may all need to be able to probe for capabilities.
1923
"""
1924
# What we really want to test here is that SmartClientProtocolTwo calls
1925
# accept_bytes(tuple_based_encoding_of_hello) and reads and parses the
1926
# response of tuple-encoded (ok, 1). Also, seperately we should test
1927
# the error if the response is a non-understood version.
1928
input = StringIO(self.response_marker + 'success\nok\x012\n')
1929
output = StringIO()
1930
client_medium = medium.SmartSimplePipesClientMedium(
1931
input, output, 'base')
1932
request = client_medium.get_request()
1933
smart_protocol = self.client_protocol_class(request)
1934
self.assertEqual(2, smart_protocol.query_version())
1935
1936
def test_client_call_empty_response(self):
1937
# protocol.call() can get back an empty tuple as a response. This occurs
1938
# when the parsed line is an empty line, and results in a tuple with
1939
# one element - an empty string.
1940
self.assertServerToClientEncoding(
1941
self.response_marker + 'success\n\n', ('', ), [(), ('', )])
1942
1943
def test_client_call_three_element_response(self):
1944
# protocol.call() can get back tuples of other lengths. A three element
1945
# tuple should be unpacked as three strings.
1946
self.assertServerToClientEncoding(
1947
self.response_marker + 'success\na\x01b\x0134\n',
1948
('a', 'b', '34'),
1949
[('a', 'b', '34')])
1950
1951
def test_client_call_with_body_bytes_uploads(self):
1952
# protocol.call_with_body_bytes should length-prefix the bytes onto the
1953
# wire.
1954
expected_bytes = self.request_marker + "foo\n7\nabcdefgdone\n"
1955
input = StringIO("\n")
1956
output = StringIO()
1957
client_medium = medium.SmartSimplePipesClientMedium(
1958
input, output, 'base')
1959
request = client_medium.get_request()
1960
smart_protocol = self.client_protocol_class(request)
1961
smart_protocol.call_with_body_bytes(('foo', ), "abcdefg")
1962
self.assertEqual(expected_bytes, output.getvalue())
1963
1964
def test_client_call_with_body_readv_array(self):
1965
# protocol.call_with_upload should encode the readv array and then
1966
# length-prefix the bytes onto the wire.
1967
expected_bytes = self.request_marker + "foo\n7\n1,2\n5,6done\n"
1968
input = StringIO("\n")
1969
output = StringIO()
1970
client_medium = medium.SmartSimplePipesClientMedium(
1971
input, output, 'base')
1972
request = client_medium.get_request()
1973
smart_protocol = self.client_protocol_class(request)
1974
smart_protocol.call_with_body_readv_array(('foo', ), [(1,2),(5,6)])
1975
self.assertEqual(expected_bytes, output.getvalue())
1976
1977
def test_client_read_body_bytes_all(self):
1978
# read_body_bytes should decode the body bytes from the wire into
1979
# a response.
1980
expected_bytes = "1234567"
1981
server_bytes = (self.response_marker +
1982
"success\nok\n7\n1234567done\n")
1983
input = StringIO(server_bytes)
1984
output = StringIO()
1985
client_medium = medium.SmartSimplePipesClientMedium(
1986
input, output, 'base')
1987
request = client_medium.get_request()
1988
smart_protocol = self.client_protocol_class(request)
1989
smart_protocol.call('foo')
1990
smart_protocol.read_response_tuple(True)
1991
self.assertEqual(expected_bytes, smart_protocol.read_body_bytes())
1992
1993
def test_client_read_body_bytes_incremental(self):
1994
# test reading a few bytes at a time from the body
1995
# XXX: possibly we should test dribbling the bytes into the stringio
1996
# to make the state machine work harder: however, as we use the
1997
# LengthPrefixedBodyDecoder that is already well tested - we can skip
1998
# that.
1999
expected_bytes = "1234567"
2000
server_bytes = self.response_marker + "success\nok\n7\n1234567done\n"
2001
input = StringIO(server_bytes)
2002
output = StringIO()
2003
client_medium = medium.SmartSimplePipesClientMedium(
2004
input, output, 'base')
2005
request = client_medium.get_request()
2006
smart_protocol = self.client_protocol_class(request)
2007
smart_protocol.call('foo')
2008
smart_protocol.read_response_tuple(True)
2009
self.assertEqual(expected_bytes[0:2], smart_protocol.read_body_bytes(2))
2010
self.assertEqual(expected_bytes[2:4], smart_protocol.read_body_bytes(2))
2011
self.assertEqual(expected_bytes[4:6], smart_protocol.read_body_bytes(2))
2012
self.assertEqual(expected_bytes[6], smart_protocol.read_body_bytes())
2013
2014
def test_client_cancel_read_body_does_not_eat_body_bytes(self):
2015
# cancelling the expected body needs to finish the request, but not
2016
# read any more bytes.
2017
server_bytes = self.response_marker + "success\nok\n7\n1234567done\n"
2018
input = StringIO(server_bytes)
2019
output = StringIO()
2020
client_medium = medium.SmartSimplePipesClientMedium(
2021
input, output, 'base')
2022
request = client_medium.get_request()
2023
smart_protocol = self.client_protocol_class(request)
2024
smart_protocol.call('foo')
2025
smart_protocol.read_response_tuple(True)
2026
smart_protocol.cancel_read_body()
2027
self.assertEqual(len(self.response_marker + 'success\nok\n'),
2028
input.tell())
2029
self.assertRaises(
2030
errors.ReadingCompleted, smart_protocol.read_body_bytes)
2031
2032
2033
class TestSmartProtocolTwoSpecificsMixin(object):
2034
1761
2035
def assertBodyStreamSerialisation(self, expected_serialisation,
1762
2036
body_stream):
1763
2037
"""Assert that body_stream is serialised as expected_serialisation."""
1810
2084
self.assertBodyStreamSerialisation(expected_bytes, stream)
1811
2085
self.assertBodyStreamRoundTrips(stream)
1812
2086
1813
def test_accept_bytes_of_bad_request_to_protocol(self):
1814
out_stream = StringIO()
1815
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1816
None, out_stream.write)
1817
smart_protocol.accept_bytes('abc')
1818
self.assertEqual('abc', smart_protocol.in_buffer)
1819
smart_protocol.accept_bytes('\n')
1820
self.assertEqual(
1821
protocol.RESPONSE_VERSION_TWO +
1822
"failed\nerror\x01Generic bzr smart protocol error: bad request 'abc'\n",
1823
out_stream.getvalue())
1824
self.assertTrue(smart_protocol.has_dispatched)
1825
self.assertEqual(0, smart_protocol.next_read_size())
1826
1827
def test_accept_body_bytes_to_protocol(self):
1828
protocol = self.build_protocol_waiting_for_body()
1829
self.assertEqual(6, protocol.next_read_size())
1830
protocol.accept_bytes('7\nabc')
1831
self.assertEqual(9, protocol.next_read_size())
1832
protocol.accept_bytes('defgd')
1833
protocol.accept_bytes('one\n')
1834
self.assertEqual(0, protocol.next_read_size())
1835
self.assertTrue(self.end_received)
1836
1837
def test_accept_request_and_body_all_at_once(self):
1838
self._captureVar('BZR_NO_SMART_VFS', None)
1839
mem_transport = memory.MemoryTransport()
1840
mem_transport.put_bytes('foo', 'abcdefghij')
1841
out_stream = StringIO()
1842
smart_protocol = protocol.SmartServerRequestProtocolTwo(mem_transport,
1843
out_stream.write)
1844
smart_protocol.accept_bytes('readv\x01foo\n3\n3,3done\n')
1845
self.assertEqual(0, smart_protocol.next_read_size())
1846
self.assertEqual(protocol.RESPONSE_VERSION_TWO +
1847
'success\nreadv\n3\ndefdone\n',
1848
out_stream.getvalue())
1849
self.assertEqual('', smart_protocol.excess_buffer)
1850
self.assertEqual('', smart_protocol.in_buffer)
1851
1852
def test_accept_excess_bytes_are_preserved(self):
1853
out_stream = StringIO()
1854
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1855
None, out_stream.write)
1856
smart_protocol.accept_bytes('hello\nhello\n')
1857
self.assertEqual(protocol.RESPONSE_VERSION_TWO + "success\nok\x012\n",
1858
out_stream.getvalue())
1859
self.assertEqual("hello\n", smart_protocol.excess_buffer)
1860
self.assertEqual("", smart_protocol.in_buffer)
1861
1862
def test_accept_excess_bytes_after_body(self):
1863
# The excess bytes look like the start of another request.
1864
server_protocol = self.build_protocol_waiting_for_body()
1865
server_protocol.accept_bytes(
1866
'7\nabcdefgdone\n' + protocol.RESPONSE_VERSION_TWO)
1867
self.assertTrue(self.end_received)
1868
self.assertEqual(protocol.RESPONSE_VERSION_TWO,
1869
server_protocol.excess_buffer)
1870
self.assertEqual("", server_protocol.in_buffer)
1871
server_protocol.accept_bytes('Y')
1872
self.assertEqual(protocol.RESPONSE_VERSION_TWO + "Y",
1873
server_protocol.excess_buffer)
1874
self.assertEqual("", server_protocol.in_buffer)
1875
1876
def test_accept_excess_bytes_after_dispatch(self):
1877
out_stream = StringIO()
1878
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1879
None, out_stream.write)
1880
smart_protocol.accept_bytes('hello\n')
1881
self.assertEqual(protocol.RESPONSE_VERSION_TWO + "success\nok\x012\n",
1882
out_stream.getvalue())
1883
smart_protocol.accept_bytes(protocol.REQUEST_VERSION_TWO + 'hel')
1884
self.assertEqual(protocol.REQUEST_VERSION_TWO + "hel",
1885
smart_protocol.excess_buffer)
1886
smart_protocol.accept_bytes('lo\n')
1887
self.assertEqual(protocol.REQUEST_VERSION_TWO + "hello\n",
1888
smart_protocol.excess_buffer)
1889
self.assertEqual("", smart_protocol.in_buffer)
1890
1891
def test__send_response_sets_finished_reading(self):
1892
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1893
None, lambda x: None)
1894
self.assertEqual(1, smart_protocol.next_read_size())
1895
smart_protocol._send_response(
1896
_mod_request.SuccessfulSmartServerResponse(('x',)))
1897
self.assertEqual(0, smart_protocol.next_read_size())
1898
1899
def test__send_response_with_body_stream_sets_finished_reading(self):
1900
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1901
None, lambda x: None)
1902
self.assertEqual(1, smart_protocol.next_read_size())
1903
smart_protocol._send_response(
1904
_mod_request.SuccessfulSmartServerResponse(('x',), body_stream=[]))
1905
self.assertEqual(0, smart_protocol.next_read_size())
1906
1907
def test__send_response_errors_with_base_response(self):
1908
"""Ensure that only the Successful/Failed subclasses are used."""
1909
smart_protocol = protocol.SmartServerRequestProtocolTwo(
1910
None, lambda x: None)
1911
self.assertRaises(AttributeError, smart_protocol._send_response,
1912
_mod_request.SmartServerResponse(('x',)))
1913
1914
2087
def test__send_response_includes_failure_marker(self):
1915
2088
"""FailedSmartServerResponse have 'failed\n' after the version."""
1916
2089
out_stream = StringIO()
1931
2104
self.assertEqual(protocol.RESPONSE_VERSION_TWO + 'success\nx\n',
1932
2105
out_stream.getvalue())
1933
2106
1934
def test_query_version(self):
1935
"""query_version on a SmartClientProtocolTwo should return a number.
1936
1937
The protocol provides the query_version because the domain level clients
1938
may all need to be able to probe for capabilities.
1939
"""
1940
# What we really want to test here is that SmartClientProtocolTwo calls
1941
# accept_bytes(tuple_based_encoding_of_hello) and reads and parses the
1942
# response of tuple-encoded (ok, 1). Also, seperately we should test
1943
# the error if the response is a non-understood version.
1944
input = StringIO(protocol.RESPONSE_VERSION_TWO + 'success\nok\x012\n')
1945
output = StringIO()
1946
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1947
request = client_medium.get_request()
1948
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
1949
self.assertEqual(2, smart_protocol.query_version())
1950
1951
def test_client_call_empty_response(self):
1952
# protocol.call() can get back an empty tuple as a response. This occurs
1953
# when the parsed line is an empty line, and results in a tuple with
1954
# one element - an empty string.
1955
self.assertServerToClientEncoding(
1956
protocol.RESPONSE_VERSION_TWO + 'success\n\n', ('', ), [(), ('', )])
1957
1958
def test_client_call_three_element_response(self):
1959
# protocol.call() can get back tuples of other lengths. A three element
1960
# tuple should be unpacked as three strings.
1961
self.assertServerToClientEncoding(
1962
protocol.RESPONSE_VERSION_TWO + 'success\na\x01b\x0134\n',
1963
('a', 'b', '34'),
1964
[('a', 'b', '34')])
1965
1966
def test_client_call_with_body_bytes_uploads(self):
1967
# protocol.call_with_body_bytes should length-prefix the bytes onto the
1968
# wire.
1969
expected_bytes = protocol.REQUEST_VERSION_TWO + "foo\n7\nabcdefgdone\n"
1970
input = StringIO("\n")
1971
output = StringIO()
1972
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1973
request = client_medium.get_request()
1974
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
1975
smart_protocol.call_with_body_bytes(('foo', ), "abcdefg")
1976
self.assertEqual(expected_bytes, output.getvalue())
1977
1978
def test_client_call_with_body_readv_array(self):
1979
# protocol.call_with_upload should encode the readv array and then
1980
# length-prefix the bytes onto the wire.
1981
expected_bytes = protocol.REQUEST_VERSION_TWO+"foo\n7\n1,2\n5,6done\n"
1982
input = StringIO("\n")
1983
output = StringIO()
1984
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1985
request = client_medium.get_request()
1986
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
1987
smart_protocol.call_with_body_readv_array(('foo', ), [(1,2),(5,6)])
1988
self.assertEqual(expected_bytes, output.getvalue())
1989
1990
def test_client_read_response_tuple_sets_response_status(self):
1991
server_bytes = protocol.RESPONSE_VERSION_TWO + "success\nok\n"
1992
input = StringIO(server_bytes)
1993
output = StringIO()
1994
client_medium = medium.SmartSimplePipesClientMedium(input, output)
1995
request = client_medium.get_request()
1996
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
1997
smart_protocol.call('foo')
1998
smart_protocol.read_response_tuple(False)
1999
self.assertEqual(True, smart_protocol.response_status)
2000
2001
def test_client_read_response_tuple_raises_UnknownSmartMethod(self):
2002
"""read_response_tuple raises UnknownSmartMethod if the response is
2003
says the server did not recognise the request.
2004
"""
2005
server_bytes = (
2006
protocol.RESPONSE_VERSION_TWO +
2007
"failed\n" +
2008
"error\x01Generic bzr smart protocol error: bad request 'foo'\n")
2009
input = StringIO(server_bytes)
2010
output = StringIO()
2011
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2012
request = client_medium.get_request()
2013
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2014
smart_protocol.call('foo')
2015
self.assertRaises(
2016
errors.UnknownSmartMethod, smart_protocol.read_response_tuple)
2017
self.assertEqual(False, smart_protocol.response_status)
2018
# The request has been finished. There is no body to read, and
2019
# attempts to read one will fail.
2020
self.assertRaises(
2021
errors.ReadingCompleted, smart_protocol.read_body_bytes)
2022
2023
def test_client_read_body_bytes_all(self):
2024
# read_body_bytes should decode the body bytes from the wire into
2025
# a response.
2026
expected_bytes = "1234567"
2027
server_bytes = (protocol.RESPONSE_VERSION_TWO +
2028
"success\nok\n7\n1234567done\n")
2029
input = StringIO(server_bytes)
2030
output = StringIO()
2031
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2032
request = client_medium.get_request()
2033
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2034
smart_protocol.call('foo')
2035
smart_protocol.read_response_tuple(True)
2036
self.assertEqual(expected_bytes, smart_protocol.read_body_bytes())
2037
2038
def test_client_read_body_bytes_incremental(self):
2039
# test reading a few bytes at a time from the body
2040
# XXX: possibly we should test dribbling the bytes into the stringio
2041
# to make the state machine work harder: however, as we use the
2042
# LengthPrefixedBodyDecoder that is already well tested - we can skip
2043
# that.
2044
expected_bytes = "1234567"
2045
server_bytes = (protocol.RESPONSE_VERSION_TWO +
2046
"success\nok\n7\n1234567done\n")
2047
input = StringIO(server_bytes)
2048
output = StringIO()
2049
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2050
request = client_medium.get_request()
2051
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2052
smart_protocol.call('foo')
2053
smart_protocol.read_response_tuple(True)
2054
self.assertEqual(expected_bytes[0:2], smart_protocol.read_body_bytes(2))
2055
self.assertEqual(expected_bytes[2:4], smart_protocol.read_body_bytes(2))
2056
self.assertEqual(expected_bytes[4:6], smart_protocol.read_body_bytes(2))
2057
self.assertEqual(expected_bytes[6], smart_protocol.read_body_bytes())
2058
2059
def test_client_cancel_read_body_does_not_eat_body_bytes(self):
2060
# cancelling the expected body needs to finish the request, but not
2061
# read any more bytes.
2062
server_bytes = (protocol.RESPONSE_VERSION_TWO +
2063
"success\nok\n7\n1234567done\n")
2064
input = StringIO(server_bytes)
2065
output = StringIO()
2066
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2067
request = client_medium.get_request()
2068
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2069
smart_protocol.call('foo')
2070
smart_protocol.read_response_tuple(True)
2071
smart_protocol.cancel_read_body()
2072
self.assertEqual(len(protocol.RESPONSE_VERSION_TWO + 'success\nok\n'),
2073
input.tell())
2074
self.assertRaises(
2075
errors.ReadingCompleted, smart_protocol.read_body_bytes)
2107
def test__send_response_with_body_stream_sets_finished_reading(self):
2108
smart_protocol = protocol.SmartServerRequestProtocolTwo(
2109
None, lambda x: None)
2110
self.assertEqual(1, smart_protocol.next_read_size())
2111
smart_protocol._send_response(
2112
_mod_request.SuccessfulSmartServerResponse(('x',), body_stream=[]))
2113
self.assertEqual(0, smart_protocol.next_read_size())
2076
2114
2077
2115
def test_streamed_body_bytes(self):
2078
2116
body_header = 'chunked\n'
2083
2121
body_terminator)
2084
2122
input = StringIO(server_bytes)
2085
2123
output = StringIO()
2086
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2124
client_medium = medium.SmartSimplePipesClientMedium(
2125
input, output, 'base')
2087
2126
request = client_medium.get_request()
2088
2127
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2089
2128
smart_protocol.call('foo')
2103
2142
"success\nok\n" + body)
2104
2143
input = StringIO(server_bytes)
2105
2144
output = StringIO()
2106
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2145
client_medium = medium.SmartSimplePipesClientMedium(
2146
input, output, 'base')
2107
2147
smart_request = client_medium.get_request()
2108
2148
smart_protocol = protocol.SmartClientRequestProtocolTwo(smart_request)
2109
2149
smart_protocol.call('foo')
2114
2154
stream = smart_protocol.read_streamed_body()
2115
2155
self.assertEqual(expected_chunks, list(stream))
2116
2156
2157
def test_client_read_response_tuple_sets_response_status(self):
2158
server_bytes = protocol.RESPONSE_VERSION_TWO + "success\nok\n"
2159
input = StringIO(server_bytes)
2160
output = StringIO()
2161
client_medium = medium.SmartSimplePipesClientMedium(
2162
input, output, 'base')
2163
request = client_medium.get_request()
2164
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2165
smart_protocol.call('foo')
2166
smart_protocol.read_response_tuple(False)
2167
self.assertEqual(True, smart_protocol.response_status)
2168
2169
def test_client_read_response_tuple_raises_UnknownSmartMethod(self):
2170
"""read_response_tuple raises UnknownSmartMethod if the response says
2171
the server did not recognise the request.
2172
"""
2173
server_bytes = (
2174
protocol.RESPONSE_VERSION_TWO +
2175
"failed\n" +
2176
"error\x01Generic bzr smart protocol error: bad request 'foo'\n")
2177
input = StringIO(server_bytes)
2178
output = StringIO()
2179
client_medium = medium.SmartSimplePipesClientMedium(
2180
input, output, 'base')
2181
request = client_medium.get_request()
2182
smart_protocol = protocol.SmartClientRequestProtocolTwo(request)
2183
smart_protocol.call('foo')
2184
self.assertRaises(
2185
errors.UnknownSmartMethod, smart_protocol.read_response_tuple)
2186
# The request has been finished. There is no body to read, and
2187
# attempts to read one will fail.
2188
self.assertRaises(
2189
errors.ReadingCompleted, smart_protocol.read_body_bytes)
2190
2191
2192
class TestSmartProtocolTwoSpecifics(
2193
TestSmartProtocol, TestSmartProtocolTwoSpecificsMixin):
2194
"""Tests for aspects of smart protocol version two that are unique to
2195
version two.
2196
2197
Thus tests involving body streams and success/failure markers belong here.
2198
"""
2199
2200
client_protocol_class = protocol.SmartClientRequestProtocolTwo
2201
server_protocol_class = protocol.SmartServerRequestProtocolTwo
2202
2203
2204
class TestVersionOneFeaturesInProtocolThree(
2205
TestSmartProtocol, CommonSmartProtocolTestMixin):
2206
"""Tests for version one smart protocol features as implemented by version
2207
three.
2208
"""
2209
2210
request_encoder = protocol.ProtocolThreeRequester
2211
response_decoder = protocol.ProtocolThreeDecoder
2212
# build_server_protocol_three is a function, so we can't set it as a class
2213
# attribute directly, because then Python will assume it is actually a
2214
# method. So we make server_protocol_class be a static method, rather than
2215
# simply doing:
2216
# "server_protocol_class = protocol.build_server_protocol_three".
2217
server_protocol_class = staticmethod(protocol.build_server_protocol_three)
2218
2219
def setUp(self):
2220
super(TestVersionOneFeaturesInProtocolThree, self).setUp()
2221
self.response_marker = protocol.MESSAGE_VERSION_THREE
2222
self.request_marker = protocol.MESSAGE_VERSION_THREE
2223
2224
def test_construct_version_three_server_protocol(self):
2225
smart_protocol = protocol.ProtocolThreeDecoder(None)
2226
self.assertEqual('', smart_protocol.unused_data)
2227
self.assertEqual('', smart_protocol._in_buffer)
2228
self.assertFalse(smart_protocol._has_dispatched)
2229
# The protocol starts by expecting four bytes, a length prefix for the
2230
# headers.
2231
self.assertEqual(4, smart_protocol.next_read_size())
2232
2233
2234
class NoOpRequest(_mod_request.SmartServerRequest):
2235
2236
def do(self):
2237
return _mod_request.SuccessfulSmartServerResponse(())
2238
2239
dummy_registry = {'ARG': NoOpRequest}
2240
2241
2242
class LoggingMessageHandler(object):
2243
2244
def __init__(self):
2245
self.event_log = []
2246
2247
def _log(self, *args):
2248
self.event_log.append(args)
2249
2250
def headers_received(self, headers):
2251
self._log('headers', headers)
2252
2253
def protocol_error(self, exception):
2254
self._log('protocol_error', exception)
2255
2256
def byte_part_received(self, byte):
2257
self._log('byte', byte)
2258
2259
def bytes_part_received(self, bytes):
2260
self._log('bytes', bytes)
2261
2262
def structure_part_received(self, structure):
2263
self._log('structure', structure)
2264
2265
def end_received(self):
2266
self._log('end')
2267
2268
2269
class TestProtocolThree(TestSmartProtocol):
2270
"""Tests for v3 of the server-side protocol."""
2271
2272
request_encoder = protocol.ProtocolThreeRequester
2273
response_decoder = protocol.ProtocolThreeDecoder
2274
server_protocol_class = protocol.ProtocolThreeDecoder
2275
2276
def test_trivial_request(self):
2277
"""Smoke test for the simplest possible v3 request: empty headers, no
2278
message parts.
2279
"""
2280
output = StringIO()
2281
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2282
end = 'e'
2283
request_bytes = headers + end
2284
smart_protocol = self.server_protocol_class(LoggingMessageHandler())
2285
smart_protocol.accept_bytes(request_bytes)
2286
self.assertEqual(0, smart_protocol.next_read_size())
2287
self.assertEqual('', smart_protocol.unused_data)
2288
2289
def make_protocol_expecting_message_part(self):
2290
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2291
message_handler = LoggingMessageHandler()
2292
smart_protocol = self.server_protocol_class(message_handler)
2293
smart_protocol.accept_bytes(headers)
2294
# Clear the event log
2295
del message_handler.event_log[:]
2296
return smart_protocol, message_handler.event_log
2297
2298
def test_decode_one_byte(self):
2299
"""The protocol can decode a 'one byte' message part."""
2300
smart_protocol, event_log = self.make_protocol_expecting_message_part()
2301
smart_protocol.accept_bytes('ox')
2302
self.assertEqual([('byte', 'x')], event_log)
2303
2304
def test_decode_bytes(self):
2305
"""The protocol can decode a 'bytes' message part."""
2306
smart_protocol, event_log = self.make_protocol_expecting_message_part()
2307
smart_protocol.accept_bytes(
2308
'b' # message part kind
2309
'\0\0\0\x07' # length prefix
2310
'payload' # payload
2311
)
2312
self.assertEqual([('bytes', 'payload')], event_log)
2313
2314
def test_decode_structure(self):
2315
"""The protocol can decode a 'structure' message part."""
2316
smart_protocol, event_log = self.make_protocol_expecting_message_part()
2317
smart_protocol.accept_bytes(
2318
's' # message part kind
2319
'\0\0\0\x07' # length prefix
2320
'l3:ARGe' # ['ARG']
2321
)
2322
self.assertEqual([('structure', ['ARG'])], event_log)
2323
2324
def test_decode_multiple_bytes(self):
2325
"""The protocol can decode a multiple 'bytes' message parts."""
2326
smart_protocol, event_log = self.make_protocol_expecting_message_part()
2327
smart_protocol.accept_bytes(
2328
'b' # message part kind
2329
'\0\0\0\x05' # length prefix
2330
'first' # payload
2331
'b' # message part kind
2332
'\0\0\0\x06'
2333
'second'
2334
)
2335
self.assertEqual(
2336
[('bytes', 'first'), ('bytes', 'second')], event_log)
2337
2338
2339
class TestConventionalResponseHandler(tests.TestCase):
2340
2341
def test_interrupted_body_stream(self):
2342
interrupted_body_stream = (
2343
'oS' # successful response
2344
's\0\0\0\x02le' # empty args
2345
'b\0\0\0\x09chunk one' # first chunk
2346
'b\0\0\0\x09chunk two' # second chunk
2347
'oE' # error flag
2348
's\0\0\0\x0el5:error3:abce' # bencoded error
2349
'e' # message end
2350
)
2351
from bzrlib.smart.message import ConventionalResponseHandler
2352
response_handler = ConventionalResponseHandler()
2353
protocol_decoder = protocol.ProtocolThreeDecoder(response_handler)
2354
# put decoder in desired state (waiting for message parts)
2355
protocol_decoder.state_accept = protocol_decoder._state_accept_expecting_message_part
2356
output = StringIO()
2357
client_medium = medium.SmartSimplePipesClientMedium(
2358
StringIO(interrupted_body_stream), output, 'base')
2359
medium_request = client_medium.get_request()
2360
medium_request.finished_writing()
2361
response_handler.setProtoAndMediumRequest(
2362
protocol_decoder, medium_request)
2363
stream = response_handler.read_streamed_body()
2364
self.assertEqual('chunk one', stream.next())
2365
self.assertEqual('chunk two', stream.next())
2366
exc = self.assertRaises(errors.ErrorFromSmartServer, stream.next)
2367
self.assertEqual(('error', 'abc'), exc.error_tuple)
2368
2369
2370
class TestMessageHandlerErrors(tests.TestCase):
2371
"""Tests for v3 that unrecognised (but well-formed) requests/responses are
2372
still fully read off the wire, so that subsequent requests/responses on the
2373
same medium can be decoded.
2374
"""
2375
2376
def test_non_conventional_request(self):
2377
"""ConventionalRequestHandler (the default message handler on the
2378
server side) will reject an unconventional message, but still consume
2379
all the bytes of that message and signal when it has done so.
2380
2381
This is what allows a server to continue to accept requests after the
2382
client sends a completely unrecognised request.
2383
"""
2384
# Define an invalid request (but one that is a well-formed message).
2385
# This particular invalid request not only lacks the mandatory
2386
# verb+args tuple, it has a single-byte part, which is forbidden. In
2387
# fact it has that part twice, to trigger multiple errors.
2388
invalid_request = (
2389
protocol.MESSAGE_VERSION_THREE + # protocol version marker
2390
'\0\0\0\x02de' + # empty headers
2391
'oX' + # a single byte part: 'X'. ConventionalRequestHandler will
2392
# error at this part.
2393
'oX' + # and again.
2394
'e' # end of message
2395
)
2396
2397
to_server = StringIO(invalid_request)
2398
from_server = StringIO()
2399
transport = memory.MemoryTransport('memory:///')
2400
server = medium.SmartServerPipeStreamMedium(
2401
to_server, from_server, transport)
2402
proto = server._build_protocol()
2403
message_handler = proto.message_handler
2404
server._serve_one_request(proto)
2405
# All the bytes have been read from the medium...
2406
self.assertEqual('', to_server.read())
2407
# ...and the protocol decoder has consumed all the bytes, and has
2408
# finished reading.
2409
self.assertEqual('', proto.unused_data)
2410
self.assertEqual(0, proto.next_read_size())
2411
2412
2413
class InstrumentedRequestHandler(object):
2414
"""Test Double of SmartServerRequestHandler."""
2415
2416
def __init__(self):
2417
self.calls = []
2418
2419
def body_chunk_received(self, chunk_bytes):
2420
self.calls.append(('body_chunk_received', chunk_bytes))
2421
2422
def no_body_received(self):
2423
self.calls.append(('no_body_received',))
2424
2425
def prefixed_body_received(self, body_bytes):
2426
self.calls.append(('prefixed_body_received', body_bytes))
2427
2428
def end_received(self):
2429
self.calls.append(('end_received',))
2430
2431
2432
class StubRequest(object):
2433
2434
def finished_reading(self):
2435
pass
2436
2437
2438
class TestClientDecodingProtocolThree(TestSmartProtocol):
2439
"""Tests for v3 of the client-side protocol decoding."""
2440
2441
def make_logging_response_decoder(self):
2442
"""Make v3 response decoder using a test response handler."""
2443
response_handler = LoggingMessageHandler()
2444
decoder = protocol.ProtocolThreeDecoder(response_handler)
2445
return decoder, response_handler
2446
2447
def make_conventional_response_decoder(self):
2448
"""Make v3 response decoder using a conventional response handler."""
2449
response_handler = message.ConventionalResponseHandler()
2450
decoder = protocol.ProtocolThreeDecoder(response_handler)
2451
response_handler.setProtoAndMediumRequest(decoder, StubRequest())
2452
return decoder, response_handler
2453
2454
def test_trivial_response_decoding(self):
2455
"""Smoke test for the simplest possible v3 response: empty headers,
2456
status byte, empty args, no body.
2457
"""
2458
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2459
response_status = 'oS' # success
2460
args = 's\0\0\0\x02le' # length-prefixed, bencoded empty list
2461
end = 'e' # end marker
2462
message_bytes = headers + response_status + args + end
2463
decoder, response_handler = self.make_logging_response_decoder()
2464
decoder.accept_bytes(message_bytes)
2465
# The protocol decoder has finished, and consumed all bytes
2466
self.assertEqual(0, decoder.next_read_size())
2467
self.assertEqual('', decoder.unused_data)
2468
# The message handler has been invoked with all the parts of the
2469
# trivial response: empty headers, status byte, no args, end.
2470
self.assertEqual(
2471
[('headers', {}), ('byte', 'S'), ('structure', []), ('end',)],
2472
response_handler.event_log)
2473
2474
def test_incomplete_message(self):
2475
"""A decoder will keep signalling that it needs more bytes via
2476
next_read_size() != 0 until it has seen a complete message, regardless
2477
which state it is in.
2478
"""
2479
# Define a simple response that uses all possible message parts.
2480
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2481
response_status = 'oS' # success
2482
args = 's\0\0\0\x02le' # length-prefixed, bencoded empty list
2483
body = 'b\0\0\0\x04BODY' # a body: 'BODY'
2484
end = 'e' # end marker
2485
simple_response = headers + response_status + args + body + end
2486
# Feed the request to the decoder one byte at a time.
2487
decoder, response_handler = self.make_logging_response_decoder()
2488
for byte in simple_response:
2489
self.assertNotEqual(0, decoder.next_read_size())
2490
decoder.accept_bytes(byte)
2491
# Now the response is complete
2492
self.assertEqual(0, decoder.next_read_size())
2493
2494
def test_read_response_tuple_raises_UnknownSmartMethod(self):
2495
"""read_response_tuple raises UnknownSmartMethod if the server replied
2496
with 'UnknownMethod'.
2497
"""
2498
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2499
response_status = 'oE' # error flag
2500
# args: ('UnknownMethod', 'method-name')
2501
args = 's\0\0\0\x20l13:UnknownMethod11:method-namee'
2502
end = 'e' # end marker
2503
message_bytes = headers + response_status + args + end
2504
decoder, response_handler = self.make_conventional_response_decoder()
2505
decoder.accept_bytes(message_bytes)
2506
error = self.assertRaises(
2507
errors.UnknownSmartMethod, response_handler.read_response_tuple)
2508
self.assertEqual('method-name', error.verb)
2509
2510
def test_read_response_tuple_error(self):
2511
"""If the response has an error, it is raised as an exception."""
2512
headers = '\0\0\0\x02de' # length-prefixed, bencoded empty dict
2513
response_status = 'oE' # error
2514
args = 's\0\0\0\x1al9:first arg10:second arge' # two args
2515
end = 'e' # end marker
2516
message_bytes = headers + response_status + args + end
2517
decoder, response_handler = self.make_conventional_response_decoder()
2518
decoder.accept_bytes(message_bytes)
2519
error = self.assertRaises(
2520
errors.ErrorFromSmartServer, response_handler.read_response_tuple)
2521
self.assertEqual(('first arg', 'second arg'), error.error_tuple)
2522
2523
2524
class TestClientEncodingProtocolThree(TestSmartProtocol):
2525
2526
request_encoder = protocol.ProtocolThreeRequester
2527
response_decoder = protocol.ProtocolThreeDecoder
2528
server_protocol_class = protocol.ProtocolThreeDecoder
2529
2530
def make_client_encoder_and_output(self):
2531
result = self.make_client_protocol_and_output()
2532
requester, response_handler, output = result
2533
return requester, output
2534
2535
def test_call_smoke_test(self):
2536
"""A smoke test for ProtocolThreeRequester.call.
2537
2538
This test checks that a particular simple invocation of call emits the
2539
correct bytes for that invocation.
2540
"""
2541
requester, output = self.make_client_encoder_and_output()
2542
requester.set_headers({'header name': 'header value'})
2543
requester.call('one arg')
2544
self.assertEquals(
2545
'bzr message 3 (bzr 1.6)\n' # protocol version
2546
'\x00\x00\x00\x1fd11:header name12:header valuee' # headers
2547
's\x00\x00\x00\x0bl7:one arge' # args
2548
'e', # end
2549
output.getvalue())
2550
2551
def test_call_with_body_bytes_smoke_test(self):
2552
"""A smoke test for ProtocolThreeRequester.call_with_body_bytes.
2553
2554
This test checks that a particular simple invocation of
2555
call_with_body_bytes emits the correct bytes for that invocation.
2556
"""
2557
requester, output = self.make_client_encoder_and_output()
2558
requester.set_headers({'header name': 'header value'})
2559
requester.call_with_body_bytes(('one arg',), 'body bytes')
2560
self.assertEquals(
2561
'bzr message 3 (bzr 1.6)\n' # protocol version
2562
'\x00\x00\x00\x1fd11:header name12:header valuee' # headers
2563
's\x00\x00\x00\x0bl7:one arge' # args
2564
'b' # there is a prefixed body
2565
'\x00\x00\x00\nbody bytes' # the prefixed body
2566
'e', # end
2567
output.getvalue())
2568
2569
def test_call_writes_just_once(self):
2570
"""A bodyless request is written to the medium all at once."""
2571
medium_request = StubMediumRequest()
2572
encoder = protocol.ProtocolThreeRequester(medium_request)
2573
encoder.call('arg1', 'arg2', 'arg3')
2574
self.assertEqual(
2575
['accept_bytes', 'finished_writing'], medium_request.calls)
2576
2577
def test_call_with_body_bytes_writes_just_once(self):
2578
"""A request with body bytes is written to the medium all at once."""
2579
medium_request = StubMediumRequest()
2580
encoder = protocol.ProtocolThreeRequester(medium_request)
2581
encoder.call_with_body_bytes(('arg', 'arg'), 'body bytes')
2582
self.assertEqual(
2583
['accept_bytes', 'finished_writing'], medium_request.calls)
2584
2585
2586
class StubMediumRequest(object):
2587
"""A stub medium request that tracks the number of times accept_bytes is
2588
called.
2589
"""
2590
2591
def __init__(self):
2592
self.calls = []
2593
2594
def accept_bytes(self, bytes):
2595
self.calls.append('accept_bytes')
2596
2597
def finished_writing(self):
2598
self.calls.append('finished_writing')
2599
2600
2601
class TestResponseEncodingProtocolThree(tests.TestCase):
2602
2603
def make_response_encoder(self):
2604
out_stream = StringIO()
2605
response_encoder = protocol.ProtocolThreeResponder(out_stream.write)
2606
return response_encoder, out_stream
2607
2608
def test_send_error_unknown_method(self):
2609
encoder, out_stream = self.make_response_encoder()
2610
encoder.send_error(errors.UnknownSmartMethod('method name'))
2611
# Use assertEndsWith so that we don't compare the header, which varies
2612
# by bzrlib.__version__.
2613
self.assertEndsWith(
2614
out_stream.getvalue(),
2615
# error status
2616
'oE' +
2617
# tuple: 'UnknownMethod', 'method name'
2618
's\x00\x00\x00\x20l13:UnknownMethod11:method namee'
2619
# end of message
2620
'e')
2621
2622
2623
class TestResponseEncoderBufferingProtocolThree(tests.TestCase):
2624
"""Tests for buffering of responses.
2625
2626
We want to avoid doing many small writes when one would do, to avoid
2627
unnecessary network overhead.
2628
"""
2629
2630
def setUp(self):
2631
self.writes = []
2632
self.responder = protocol.ProtocolThreeResponder(self.writes.append)
2633
2634
def assertWriteCount(self, expected_count):
2635
self.assertEqual(
2636
expected_count, len(self.writes),
2637
"Too many writes: %r" % (self.writes,))
2638
2639
def test_send_error_writes_just_once(self):
2640
"""An error response is written to the medium all at once."""
2641
self.responder.send_error(Exception('An exception string.'))
2642
self.assertWriteCount(1)
2643
2644
def test_send_response_writes_just_once(self):
2645
"""A normal response with no body is written to the medium all at once.
2646
"""
2647
response = _mod_request.SuccessfulSmartServerResponse(('arg', 'arg'))
2648
self.responder.send_response(response)
2649
self.assertWriteCount(1)
2650
2651
def test_send_response_with_body_writes_just_once(self):
2652
"""A normal response with a monolithic body is written to the medium
2653
all at once.
2654
"""
2655
response = _mod_request.SuccessfulSmartServerResponse(
2656
('arg', 'arg'), body='body bytes')
2657
self.responder.send_response(response)
2658
self.assertWriteCount(1)
2659
2660
def test_send_response_with_body_stream_writes_once_per_chunk(self):
2661
"""A normal response with a stream body is written to the medium
2662
writes to the medium once per chunk.
2663
"""
2664
# Construct a response with stream with 2 chunks in it.
2665
response = _mod_request.SuccessfulSmartServerResponse(
2666
('arg', 'arg'), body_stream=['chunk1', 'chunk2'])
2667
self.responder.send_response(response)
2668
# We will write 3 times: exactly once for each chunk, plus a final
2669
# write to end the response.
2670
self.assertWriteCount(3)
2671
2117
2672
2118
2673
class TestSmartClientUnicode(tests.TestCase):
2119
2674
"""_SmartClient tests for unicode arguments.
2134
2689
"""
2135
2690
input = StringIO("\n")
2136
2691
output = StringIO()
2137
client_medium = medium.SmartSimplePipesClientMedium(input, output)
2138
smart_client = client._SmartClient(client_medium, 'ignored base')
2692
client_medium = medium.SmartSimplePipesClientMedium(
2693
input, output, 'ignored base')
2694
smart_client = client._SmartClient(client_medium)
2139
2695
self.assertRaises(TypeError,
2140
2696
smart_client.call_with_body_bytes, method, args, body)
2141
2697
self.assertEqual("", output.getvalue())
2152
2708
self.assertCallDoesNotBreakMedium('method', ('args',), u'body')
2153
2709
2154
2710
2711
class MockMedium(object):
2712
"""A mock medium that can be used to test _SmartClient.
2713
2714
It can be given a series of requests to expect (and responses it should
2715
return for them). It can also be told when the client is expected to
2716
disconnect a medium. Expectations must be satisfied in the order they are
2717
given, or else an AssertionError will be raised.
2718
2719
Typical use looks like::
2720
2721
medium = MockMedium()
2722
medium.expect_request(...)
2723
medium.expect_request(...)
2724
medium.expect_request(...)
2725
"""
2726
2727
def __init__(self):
2728
self.base = 'dummy base'
2729
self._mock_request = _MockMediumRequest(self)
2730
self._expected_events = []
2731
self._protocol_version = None
2732
2733
def expect_request(self, request_bytes, response_bytes,
2734
allow_partial_read=False):
2735
"""Expect 'request_bytes' to be sent, and reply with 'response_bytes'.
2736
2737
No assumption is made about how many times accept_bytes should be
2738
called to send the request. Similarly, no assumption is made about how
2739
many times read_bytes/read_line are called by protocol code to read a
2740
response. e.g.::
2741
2742
request.accept_bytes('ab')
2743
request.accept_bytes('cd')
2744
request.finished_writing()
2745
2746
and::
2747
2748
request.accept_bytes('abcd')
2749
request.finished_writing()
2750
2751
Will both satisfy ``medium.expect_request('abcd', ...)``. Thus tests
2752
using this should not break due to irrelevant changes in protocol
2753
implementations.
2754
2755
:param allow_partial_read: if True, no assertion is raised if a
2756
response is not fully read. Setting this is useful when the client
2757
is expected to disconnect without needing to read the complete
2758
response. Default is False.
2759
"""
2760
self._expected_events.append(('send request', request_bytes))
2761
if allow_partial_read:
2762
self._expected_events.append(
2763
('read response (partial)', response_bytes))
2764
else:
2765
self._expected_events.append(('read response', response_bytes))
2766
2767
def expect_disconnect(self):
2768
"""Expect the client to call ``medium.disconnect()``."""
2769
self._expected_events.append('disconnect')
2770
2771
def _assertEvent(self, observed_event):
2772
"""Raise AssertionError unless observed_event matches the next expected
2773
event.
2774
2775
:seealso: expect_request
2776
:seealso: expect_disconnect
2777
"""
2778
try:
2779
expected_event = self._expected_events.pop(0)
2780
except IndexError:
2781
raise AssertionError(
2782
'Mock medium observed event %r, but no more events expected'
2783
% (observed_event,))
2784
if expected_event[0] == 'read response (partial)':
2785
if observed_event[0] != 'read response':
2786
raise AssertionError(
2787
'Mock medium observed event %r, but expected event %r'
2788
% (observed_event, expected_event))
2789
elif observed_event != expected_event:
2790
raise AssertionError(
2791
'Mock medium observed event %r, but expected event %r'
2792
% (observed_event, expected_event))
2793
if self._expected_events:
2794
next_event = self._expected_events[0]
2795
if next_event[0].startswith('read response'):
2796
self._mock_request._response = next_event[1]
2797
2798
def get_request(self):
2799
return self._mock_request
2800
2801
def disconnect(self):
2802
if self._mock_request._read_bytes:
2803
self._assertEvent(('read response', self._mock_request._read_bytes))
2804
self._mock_request._read_bytes = ''
2805
self._assertEvent('disconnect')
2806
2807
2808
class _MockMediumRequest(object):
2809
"""A mock ClientMediumRequest used by MockMedium."""
2810
2811
def __init__(self, mock_medium):
2812
self._medium = mock_medium
2813
self._written_bytes = ''
2814
self._read_bytes = ''
2815
self._response = None
2816
2817
def accept_bytes(self, bytes):
2818
self._written_bytes += bytes
2819
2820
def finished_writing(self):
2821
self._medium._assertEvent(('send request', self._written_bytes))
2822
self._written_bytes = ''
2823
2824
def finished_reading(self):
2825
self._medium._assertEvent(('read response', self._read_bytes))
2826
self._read_bytes = ''
2827
2828
def read_bytes(self, size):
2829
resp = self._response
2830
bytes, resp = resp[:size], resp[size:]
2831
self._response = resp
2832
self._read_bytes += bytes
2833
return bytes
2834
2835
def read_line(self):
2836
resp = self._response
2837
try:
2838
line, resp = resp.split('\n', 1)
2839
line += '\n'
2840
except ValueError:
2841
line, resp = resp, ''
2842
self._response = resp
2843
self._read_bytes += line
2844
return line
2845
2846
2847
class Test_SmartClientVersionDetection(tests.TestCase):
2848
"""Tests for _SmartClient's automatic protocol version detection.
2849
2850
On the first remote call, _SmartClient will keep retrying the request with
2851
different protocol versions until it finds one that works.
2852
"""
2853
2854
def test_version_three_server(self):
2855
"""With a protocol 3 server, only one request is needed."""
2856
medium = MockMedium()
2857
smart_client = client._SmartClient(medium, headers={})
2858
message_start = protocol.MESSAGE_VERSION_THREE + '\x00\x00\x00\x02de'
2859
medium.expect_request(
2860
message_start +
2861
's\x00\x00\x00\x1el11:method-name5:arg 15:arg 2ee',
2862
message_start + 's\0\0\0\x13l14:response valueee')
2863
result = smart_client.call('method-name', 'arg 1', 'arg 2')
2864
# The call succeeded without raising any exceptions from the mock
2865
# medium, and the smart_client returns the response from the server.
2866
self.assertEqual(('response value',), result)
2867
self.assertEqual([], medium._expected_events)
2868
2869
def test_version_two_server(self):
2870
"""If the server only speaks protocol 2, the client will first try
2871
version 3, then fallback to protocol 2.
2872
2873
Further, _SmartClient caches the detection, so future requests will all
2874
use protocol 2 immediately.
2875
"""
2876
medium = MockMedium()
2877
smart_client = client._SmartClient(medium, headers={})
2878
# First the client should send a v3 request, but the server will reply
2879
# with a v2 error.
2880
medium.expect_request(
2881
'bzr message 3 (bzr 1.6)\n\x00\x00\x00\x02de' +
2882
's\x00\x00\x00\x1el11:method-name5:arg 15:arg 2ee',
2883
'bzr response 2\nfailed\n\n')
2884
# So then the client should disconnect to reset the connection, because
2885
# the client needs to assume the server cannot read any further
2886
# requests off the original connection.
2887
medium.expect_disconnect()
2888
# The client should then retry the original request in v2
2889
medium.expect_request(
2890
'bzr request 2\nmethod-name\x01arg 1\x01arg 2\n',
2891
'bzr response 2\nsuccess\nresponse value\n')
2892
result = smart_client.call('method-name', 'arg 1', 'arg 2')
2893
# The smart_client object will return the result of the successful
2894
# query.
2895
self.assertEqual(('response value',), result)
2896
2897
# Now try another request, and this time the client will just use
2898
# protocol 2. (i.e. the autodetection won't be repeated)
2899
medium.expect_request(
2900
'bzr request 2\nanother-method\n',
2901
'bzr response 2\nsuccess\nanother response\n')
2902
result = smart_client.call('another-method')
2903
self.assertEqual(('another response',), result)
2904
self.assertEqual([], medium._expected_events)
2905
2906
def test_unknown_version(self):
2907
"""If the server does not use any known (or at least supported)
2908
protocol version, a SmartProtocolError is raised.
2909
"""
2910
medium = MockMedium()
2911
smart_client = client._SmartClient(medium, headers={})
2912
unknown_protocol_bytes = 'Unknown protocol!'
2913
# The client will try v3 and v2 before eventually giving up.
2914
medium.expect_request(
2915
'bzr message 3 (bzr 1.6)\n\x00\x00\x00\x02de' +
2916
's\x00\x00\x00\x1el11:method-name5:arg 15:arg 2ee',
2917
unknown_protocol_bytes)
2918
medium.expect_disconnect()
2919
medium.expect_request(
2920
'bzr request 2\nmethod-name\x01arg 1\x01arg 2\n',
2921
unknown_protocol_bytes)
2922
medium.expect_disconnect()
2923
self.assertRaises(
2924
errors.SmartProtocolError,
2925
smart_client.call, 'method-name', 'arg 1', 'arg 2')
2926
self.assertEqual([], medium._expected_events)
2927
2928
2929
class Test_SmartClient(tests.TestCase):
2930
2931
def test_call_default_headers(self):
2932
"""ProtocolThreeRequester.call by default sends a 'Software
2933
version' header.
2934
"""
2935
smart_client = client._SmartClient('dummy medium')
2936
self.assertEqual(
2937
bzrlib.__version__, smart_client._headers['Software version'])
2938
# XXX: need a test that smart_client._headers is passed to the request
2939
# encoder.
2940
2941
2155
2942
class LengthPrefixedBodyDecoder(tests.TestCase):
2156
2943
2157
2944
# XXX: TODO: make accept_reading_trailer invoke translate_response or
2476
3263
self.assertEqual(base_transport._http_transport,
2477
3264
new_transport._http_transport)
2478
3265
self.assertEqual('child_dir/foo', new_transport._remote_path('foo'))
3266
self.assertEqual(
3267
'child_dir/',
3268
new_transport._client.remote_path_from_transport(new_transport))
2479
3269
2480
3270
def test_remote_path_unnormal_base(self):
2481
3271
# If the transport's base isn't normalised, the _remote_path should
2489
3279
base_transport = remote.RemoteHTTPTransport('bzr+http://host/%7Ea/b')
2490
3280
new_transport = base_transport.clone('c')
2491
3281
self.assertEqual('bzr+http://host/%7Ea/b/c/', new_transport.base)
3282
self.assertEqual(
3283
'c/',
3284
new_transport._client.remote_path_from_transport(new_transport))
2492
3285
2493
3286
2494
3287
# TODO: Client feature that does get_bundle and then installs that into a
Loggerhead is a web-based interface for Breezy
Version: 2.0.1