tests/bindings/python/bt2/test_graph.py

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # Copyright (C) 2019 EfficiOS Inc.
   4 #
   5
   6 import unittest
   7 import bt2
   8
   9
  10 class _MyIter(bt2._UserMessageIterator):
  11     def __init__(self, config, self_output_port):
  12         self._build_meta()
  13         self._at = 0
  14
  15     def _build_meta(self):
  16         self._tc = self._component._create_trace_class()
  17         self._t = self._tc()
  18         self._sc = self._tc.create_stream_class(supports_packets=True)
  19         self._ec = self._sc.create_event_class(name='salut')
  20         self._my_int_ft = self._tc.create_signed_integer_field_class(32)
  21         payload_ft = self._tc.create_structure_field_class()
  22         payload_ft += [('my_int', self._my_int_ft)]
  23         self._ec.payload_field_type = payload_ft
  24         self._stream = self._t.create_stream(self._sc)
  25         self._packet = self._stream.create_packet()
  26
  27     def _create_event(self, value):
  28         ev = self._ec()
  29         ev.payload_field['my_int'] = value
  30         ev.packet = self._packet
  31         return ev
  32
  33
  34 class GraphTestCase(unittest.TestCase):
  35     def setUp(self):
  36         self._graph = bt2.Graph()
  37
  38     def tearDown(self):
  39         del self._graph
  40
  41     def test_create_default(self):
  42         bt2.Graph()
  43
  44     def test_create_known_mip_version(self):
  45         bt2.Graph(0)
  46
  47     def test_create_invalid_mip_version_type(self):
  48         with self.assertRaises(TypeError):
  49             bt2.Graph('')
  50
  51     def test_create_unknown_mip_version(self):
  52         with self.assertRaisesRegex(ValueError, 'unknown MIP version'):
  53             bt2.Graph(1)
  54
  55     def test_default_interrupter(self):
  56         interrupter = self._graph.default_interrupter
  57         self.assertIs(type(interrupter), bt2.Interrupter)
  58
  59     def test_add_component_user_cls(self):
  60         class MySink(bt2._UserSinkComponent):
  61             def _user_consume(self):
  62                 pass
  63
  64         comp = self._graph.add_component(MySink, 'salut')
  65         self.assertEqual(comp.name, 'salut')
  66
  67     def test_add_component_gen_cls(self):
  68         class MySink(bt2._UserSinkComponent):
  69             def _user_consume(self):
  70                 pass
  71
  72         comp = self._graph.add_component(MySink, 'salut')
  73         assert comp
  74         comp2 = self._graph.add_component(comp.cls, 'salut2')
  75         self.assertEqual(comp2.name, 'salut2')
  76
  77     def test_add_component_params(self):
  78         comp_params = None
  79
  80         class MySink(bt2._UserSinkComponent):
  81             def __init__(self, config, params, obj):
  82                 nonlocal comp_params
  83                 comp_params = params
  84
  85             def _user_consume(self):
  86                 pass
  87
  88         params = {'hello': 23, 'path': '/path/to/stuff'}
  89         self._graph.add_component(MySink, 'salut', params)
  90         self.assertEqual(params, comp_params)
  91         del comp_params
  92
  93     def test_add_component_obj_python_comp_cls(self):
  94         comp_obj = None
  95
  96         class MySink(bt2._UserSinkComponent):
  97             def __init__(self, config, params, obj):
  98                 nonlocal comp_obj
  99                 comp_obj = obj
 100
 101             def _user_consume(self):
 102                 pass
 103
 104         obj = object()
 105         self._graph.add_component(MySink, 'salut', obj=obj)
 106         self.assertIs(comp_obj, obj)
 107         del comp_obj
 108
 109     def test_add_component_obj_none_python_comp_cls(self):
 110         comp_obj = None
 111
 112         class MySink(bt2._UserSinkComponent):
 113             def __init__(self, config, params, obj):
 114                 nonlocal comp_obj
 115                 comp_obj = obj
 116
 117             def _user_consume(self):
 118                 pass
 119
 120         self._graph.add_component(MySink, 'salut')
 121         self.assertIsNone(comp_obj)
 122         del comp_obj
 123
 124     def test_add_component_obj_non_python_comp_cls(self):
 125         plugin = bt2.find_plugin('text', find_in_user_dir=False, find_in_sys_dir=False)
 126         assert plugin is not None
 127         cc = plugin.source_component_classes['dmesg']
 128         assert cc is not None
 129
 130         with self.assertRaises(ValueError):
 131             self._graph.add_component(cc, 'salut', obj=57)
 132
 133     def test_add_component_invalid_cls_type(self):
 134         with self.assertRaises(TypeError):
 135             self._graph.add_component(int, 'salut')
 136
 137     def test_add_component_invalid_logging_level_type(self):
 138         class MySink(bt2._UserSinkComponent):
 139             def _user_consume(self):
 140                 pass
 141
 142         with self.assertRaises(TypeError):
 143             self._graph.add_component(MySink, 'salut', logging_level='yo')
 144
 145     def test_add_component_invalid_logging_level_value(self):
 146         class MySink(bt2._UserSinkComponent):
 147             def _user_consume(self):
 148                 pass
 149
 150         with self.assertRaises(ValueError):
 151             self._graph.add_component(MySink, 'salut', logging_level=12345)
 152
 153     def test_add_component_invalid_params_type(self):
 154         class MySink(bt2._UserSinkComponent):
 155             def _user_consume(self):
 156                 pass
 157
 158         with self.assertRaises(TypeError):
 159             self._graph.add_component(MySink, 'salut', params=12)
 160
 161     def test_add_component_params_dict(self):
 162         params_obj = None
 163
 164         class MySink(bt2._UserSinkComponent):
 165             def __init__(self, config, params, obj):
 166                 nonlocal params_obj
 167                 params_obj = params
 168
 169             def _user_consume(self):
 170                 pass
 171
 172         params = {'plage': 12312}
 173         self._graph.add_component(MySink, 'salut', params=params)
 174
 175         # Check equality and not identity because `add_component()` method
 176         # converts the Python `dict` to a `bt2.MapValue`.
 177         self.assertEqual(params, params_obj)
 178
 179     def test_add_component_params_mapvalue(self):
 180         params_obj = None
 181
 182         class MySink(bt2._UserSinkComponent):
 183             def __init__(self, config, params, obj):
 184                 nonlocal params_obj
 185                 params_obj = params
 186
 187             def _user_consume(self):
 188                 pass
 189
 190         params = bt2.MapValue({'beachclub': '121'})
 191         self._graph.add_component(MySink, 'salut', params=params)
 192
 193         self.assertEqual(params, params_obj)
 194
 195     def test_add_component_logging_level(self):
 196         class MySink(bt2._UserSinkComponent):
 197             def _user_consume(self):
 198                 pass
 199
 200         comp = self._graph.add_component(
 201             MySink, 'salut', logging_level=bt2.LoggingLevel.DEBUG
 202         )
 203         self.assertEqual(comp.logging_level, bt2.LoggingLevel.DEBUG)
 204
 205     def test_connect_ports(self):
 206         class MySource(
 207             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
 208         ):
 209             def __init__(self, config, params, obj):
 210                 self._add_output_port('out')
 211
 212         class MySink(bt2._UserSinkComponent):
 213             def __init__(self, config, params, obj):
 214                 self._add_input_port('in')
 215
 216             def _user_consume(self):
 217                 raise bt2.Stop
 218
 219         src = self._graph.add_component(MySource, 'src')
 220         sink = self._graph.add_component(MySink, 'sink')
 221
 222         conn = self._graph.connect_ports(
 223             src.output_ports['out'], sink.input_ports['in']
 224         )
 225         self.assertTrue(src.output_ports['out'].is_connected)
 226         self.assertTrue(sink.input_ports['in'].is_connected)
 227         self.assertEqual(src.output_ports['out'].connection.addr, conn.addr)
 228         self.assertEqual(sink.input_ports['in'].connection.addr, conn.addr)
 229
 230     def test_connect_ports_invalid_direction(self):
 231         class MySource(
 232             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
 233         ):
 234             def __init__(self, config, params, obj):
 235                 self._add_output_port('out')
 236
 237         class MySink(bt2._UserSinkComponent):
 238             def __init__(self, config, params, obj):
 239                 self._add_input_port('in')
 240
 241             def _user_consume(self):
 242                 raise bt2.Stop
 243
 244         src = self._graph.add_component(MySource, 'src')
 245         sink = self._graph.add_component(MySink, 'sink')
 246
 247         with self.assertRaises(TypeError):
 248             self._graph.connect_ports(sink.input_ports['in'], src.output_ports['out'])
 249
 250     def test_add_interrupter(self):
 251         class MyIter(bt2._UserMessageIterator):
 252             def __next__(self):
 253                 raise TypeError
 254
 255         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 256             def __init__(self, config, params, obj):
 257                 self._add_output_port('out')
 258
 259         class MySink(bt2._UserSinkComponent):
 260             def __init__(self, config, params, obj):
 261                 self._add_input_port('in')
 262
 263             def _user_consume(self):
 264                 next(self._msg_iter)
 265
 266             def _user_graph_is_configured(self):
 267                 self._msg_iter = self._create_message_iterator(self._input_ports['in'])
 268
 269         # add two interrupters, set one of them
 270         interrupter1 = bt2.Interrupter()
 271         interrupter2 = bt2.Interrupter()
 272         self._graph.add_interrupter(interrupter1)
 273         src = self._graph.add_component(MySource, 'src')
 274         sink = self._graph.add_component(MySink, 'sink')
 275         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 276         self._graph.add_interrupter(interrupter2)
 277
 278         with self.assertRaises(bt2._Error):
 279             self._graph.run()
 280
 281         interrupter2.set()
 282
 283         with self.assertRaises(bt2.TryAgain):
 284             self._graph.run()
 285
 286         interrupter2.reset()
 287
 288         with self.assertRaises(bt2._Error):
 289             self._graph.run()
 290
 291     # Test that Graph.run() raises bt2.Interrupted if the graph gets
 292     # interrupted during execution.
 293     def test_interrupt_while_running(self):
 294         class MyIter(_MyIter):
 295             def __next__(self):
 296                 return self._create_stream_beginning_message(self._stream)
 297
 298         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 299             def __init__(self, config, params, obj):
 300                 self._add_output_port('out')
 301
 302         class MySink(bt2._UserSinkComponent):
 303             def __init__(self, config, params, obj):
 304                 self._add_input_port('in')
 305
 306             def _user_consume(self):
 307                 # Pretend that somebody asynchronously interrupted the graph.
 308                 nonlocal graph
 309                 graph.default_interrupter.set()
 310                 return next(self._msg_iter)
 311
 312             def _user_graph_is_configured(self):
 313                 self._msg_iter = self._create_message_iterator(self._input_ports['in'])
 314
 315         graph = self._graph
 316         up = self._graph.add_component(MySource, 'down')
 317         down = self._graph.add_component(MySink, 'up')
 318         self._graph.connect_ports(up.output_ports['out'], down.input_ports['in'])
 319
 320         with self.assertRaises(bt2.TryAgain):
 321             self._graph.run()
 322
 323     def test_run(self):
 324         class MyIter(_MyIter):
 325             def __next__(self):
 326                 if self._at == 9:
 327                     raise StopIteration
 328
 329                 if self._at == 0:
 330                     msg = self._create_stream_beginning_message(self._stream)
 331                 elif self._at == 1:
 332                     msg = self._create_packet_beginning_message(self._packet)
 333                 elif self._at == 7:
 334                     msg = self._create_packet_end_message(self._packet)
 335                 elif self._at == 8:
 336                     msg = self._create_stream_end_message(self._stream)
 337                 else:
 338                     msg = self._create_event_message(self._ec, self._packet)
 339
 340                 self._at += 1
 341                 return msg
 342
 343         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 344             def __init__(self, config, params, obj):
 345                 self._add_output_port('out')
 346
 347         class MySink(bt2._UserSinkComponent):
 348             def __init__(self, config, params, obj):
 349                 self._input_port = self._add_input_port('in')
 350                 self._at = 0
 351
 352             def _user_consume(comp_self):
 353                 msg = next(comp_self._msg_iter)
 354
 355                 if comp_self._at == 0:
 356                     self.assertIs(type(msg), bt2._StreamBeginningMessageConst)
 357                 elif comp_self._at == 1:
 358                     self.assertIs(type(msg), bt2._PacketBeginningMessageConst)
 359                 elif comp_self._at >= 2 and comp_self._at <= 6:
 360                     self.assertIs(type(msg), bt2._EventMessageConst)
 361                     self.assertEqual(msg.event.cls.name, 'salut')
 362                 elif comp_self._at == 7:
 363                     self.assertIs(type(msg), bt2._PacketEndMessageConst)
 364                 elif comp_self._at == 8:
 365                     self.assertIs(type(msg), bt2._StreamEndMessageConst)
 366
 367                 comp_self._at += 1
 368
 369             def _user_graph_is_configured(self):
 370                 self._msg_iter = self._create_message_iterator(self._input_port)
 371
 372         src = self._graph.add_component(MySource, 'src')
 373         sink = self._graph.add_component(MySink, 'sink')
 374         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 375         self._graph.run()
 376
 377     def test_run_once(self):
 378         class MyIter(_MyIter):
 379             pass
 380
 381         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 382             def __init__(self, config, params, obj):
 383                 self._add_output_port('out')
 384
 385         class MySink(bt2._UserSinkComponent):
 386             def __init__(self, config, params, obj):
 387                 self._input_port = self._add_input_port('in')
 388
 389             def _user_consume(comp_self):
 390                 nonlocal run_count
 391                 run_count += 1
 392                 raise bt2.TryAgain
 393
 394         run_count = 0
 395         src = self._graph.add_component(MySource, 'src')
 396         sink = self._graph.add_component(MySink, 'sink')
 397         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 398
 399         with self.assertRaises(bt2.TryAgain):
 400             self._graph.run_once()
 401
 402         self.assertEqual(run_count, 1)
 403
 404     def test_run_once_stops(self):
 405         class MyIter(_MyIter):
 406             pass
 407
 408         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 409             def __init__(self, config, params, obj):
 410                 self._add_output_port('out')
 411
 412         class MySink(bt2._UserSinkComponent):
 413             def __init__(self, config, params, obj):
 414                 self._input_port = self._add_input_port('in')
 415
 416             def _user_consume(comp_self):
 417                 raise bt2.Stop
 418
 419         src = self._graph.add_component(MySource, 'src')
 420         sink = self._graph.add_component(MySink, 'sink')
 421         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 422
 423         with self.assertRaises(bt2.Stop):
 424             self._graph.run_once()
 425
 426     def test_run_again(self):
 427         class MyIter(_MyIter):
 428             def __next__(self):
 429                 if self._at == 3:
 430                     raise bt2.TryAgain
 431
 432                 if self._at == 0:
 433                     msg = self._create_stream_beginning_message(self._stream)
 434                 elif self._at == 1:
 435                     msg = self._create_packet_beginning_message(self._packet)
 436                 elif self._at == 2:
 437                     msg = self._create_event_message(self._ec, self._packet)
 438
 439                 self._at += 1
 440                 return msg
 441
 442         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 443             def __init__(self, config, params, obj):
 444                 self._add_output_port('out')
 445
 446         class MySink(bt2._UserSinkComponent):
 447             def __init__(self, config, params, obj):
 448                 self._input_port = self._add_input_port('in')
 449                 self._at = 0
 450
 451             def _user_consume(comp_self):
 452                 msg = next(comp_self._msg_iter)
 453                 if comp_self._at == 0:
 454                     self.assertIs(type(msg), bt2._StreamBeginningMessageConst)
 455                 elif comp_self._at == 1:
 456                     self.assertIs(type(msg), bt2._PacketBeginningMessageConst)
 457                 elif comp_self._at == 2:
 458                     self.assertIs(type(msg), bt2._EventMessageConst)
 459                     raise bt2.TryAgain
 460                 else:
 461                     pass
 462
 463                 comp_self._at += 1
 464
 465             def _user_graph_is_configured(self):
 466                 self._msg_iter = self._create_message_iterator(self._input_port)
 467
 468         src = self._graph.add_component(MySource, 'src')
 469         sink = self._graph.add_component(MySink, 'sink')
 470         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 471
 472         with self.assertRaises(bt2.TryAgain):
 473             self._graph.run()
 474
 475     def test_run_error(self):
 476         raised_in_sink = False
 477
 478         class MyIter(_MyIter):
 479             def __next__(self):
 480                 # If this gets called after the sink raised an exception, it is
 481                 # an error.
 482                 nonlocal raised_in_sink
 483                 assert raised_in_sink is False
 484
 485                 if self._at == 0:
 486                     msg = self._create_stream_beginning_message(self._stream)
 487                 elif self._at == 1:
 488                     msg = self._create_packet_beginning_message(self._packet)
 489                 elif self._at == 2 or self._at == 3:
 490                     msg = self._create_event_message(self._ec, self._packet)
 491                 else:
 492                     raise bt2.TryAgain
 493                 self._at += 1
 494                 return msg
 495
 496         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
 497             def __init__(self, config, params, obj):
 498                 self._add_output_port('out')
 499
 500         class MySink(bt2._UserSinkComponent):
 501             def __init__(self, config, params, obj):
 502                 self._input_port = self._add_input_port('in')
 503                 self._at = 0
 504
 505             def _user_consume(comp_self):
 506                 msg = next(comp_self._msg_iter)
 507                 if comp_self._at == 0:
 508                     self.assertIs(type(msg), bt2._StreamBeginningMessageConst)
 509                 elif comp_self._at == 1:
 510                     self.assertIs(type(msg), bt2._PacketBeginningMessageConst)
 511                 elif comp_self._at == 2:
 512                     self.assertIs(type(msg), bt2._EventMessageConst)
 513                 elif comp_self._at == 3:
 514                     nonlocal raised_in_sink
 515                     raised_in_sink = True
 516                     raise RuntimeError('error!')
 517
 518                 comp_self._at += 1
 519
 520             def _user_graph_is_configured(self):
 521                 self._msg_iter = self._create_message_iterator(self._input_port)
 522
 523         src = self._graph.add_component(MySource, 'src')
 524         sink = self._graph.add_component(MySink, 'sink')
 525         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 526
 527         with self.assertRaises(bt2._Error):
 528             self._graph.run()
 529
 530     def test_listeners(self):
 531         class MySource(
 532             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
 533         ):
 534             def __init__(self, config, params, obj):
 535                 self._add_output_port('out')
 536                 self._add_output_port('zero')
 537
 538         class MySink(bt2._UserSinkComponent):
 539             def __init__(self, config, params, obj):
 540                 self._add_input_port('in')
 541
 542             def _user_consume(self):
 543                 raise bt2.Stop
 544
 545             def _user_port_connected(self, port, other_port):
 546                 self._add_input_port('taste')
 547
 548         def port_added_listener(component, port):
 549             nonlocal calls
 550             calls.append((port_added_listener, component, port))
 551
 552         calls = []
 553         self._graph.add_port_added_listener(port_added_listener)
 554         src = self._graph.add_component(MySource, 'src')
 555         sink = self._graph.add_component(MySink, 'sink')
 556         self._graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
 557
 558         self.assertEqual(len(calls), 4)
 559
 560         self.assertIs(calls[0][0], port_added_listener)
 561         self.assertEqual(calls[0][1].name, 'src')
 562         self.assertEqual(calls[0][2].name, 'out')
 563
 564         self.assertIs(calls[1][0], port_added_listener)
 565         self.assertEqual(calls[1][1].name, 'src')
 566         self.assertEqual(calls[1][2].name, 'zero')
 567
 568         self.assertIs(calls[2][0], port_added_listener)
 569         self.assertEqual(calls[2][1].name, 'sink')
 570         self.assertEqual(calls[2][2].name, 'in')
 571
 572         self.assertIs(calls[3][0], port_added_listener)
 573         self.assertEqual(calls[3][1].name, 'sink')
 574         self.assertEqual(calls[3][2].name, 'taste')
 575
 576     def test_invalid_listeners(self):
 577         class MySource(
 578             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
 579         ):
 580             def __init__(self, config, params, obj):
 581                 self._add_output_port('out')
 582                 self._add_output_port('zero')
 583
 584         class MySink(bt2._UserSinkComponent):
 585             def __init__(self, config, params, obj):
 586                 self._add_input_port('in')
 587
 588             def _user_consume(self):
 589                 raise bt2.Stop
 590
 591             def _user_port_connected(self, port, other_port):
 592                 self._add_input_port('taste')
 593
 594         with self.assertRaises(TypeError):
 595             self._graph.add_port_added_listener(1234)
 596
 597     def test_raise_in_component_init(self):
 598         class MySink(bt2._UserSinkComponent):
 599             def __init__(self, config, params, obj):
 600                 raise ValueError('oops!')
 601
 602             def _user_consume(self):
 603                 raise bt2.Stop
 604
 605         graph = bt2.Graph()
 606
 607         with self.assertRaises(bt2._Error):
 608             graph.add_component(MySink, 'comp')
 609
 610     def test_raise_in_port_added_listener(self):
 611         class MySink(bt2._UserSinkComponent):
 612             def __init__(self, config, params, obj):
 613                 self._add_input_port('in')
 614
 615             def _user_consume(self):
 616                 raise bt2.Stop
 617
 618         def port_added_listener(component, port):
 619             raise ValueError('oh noes!')
 620
 621         graph = bt2.Graph()
 622         graph.add_port_added_listener(port_added_listener)
 623
 624         with self.assertRaises(bt2._Error):
 625             graph.add_component(MySink, 'comp')
 626
 627
 628 if __name__ == '__main__':
 629     unittest.main()