forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
reproduce.py
executable file
·552 lines (466 loc) · 18.1 KB
/
reproduce.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
#!/usr/bin/env vpython
# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Debug chromium builds locally.
Takes as input a build you want to reproduce locally.
Will do the following:
* (Optionally) sync to the revision the build ran at
* Build using the GN args used in the build.
* Run a subset of the tests that failed in the build.
Each command which is executed in the list of steps above will be printed as it
is executed. The script will prompt before running tests and syncing your
checkout.
Bugs and feature requests should be given as bugs filed via
https://bit.ly/cci-generic-bug.
"""
from __future__ import print_function
import argparse
import base64
import collections
import json
import os
import platform
import sys
import subprocess
import tempfile
import traceback
import urllib
# From vpython
import colorama
import requests
CHROMIUM_ROOT = os.path.abspath(os.path.join(
os.path.dirname(__file__), '..', '..'))
LOGDOG_BASE = 'https://logs.chromium.org/'
# TODO(martiniss): Allow this to be configured, to support internal builds.
TEST_RESULTS_BASE = 'https://test-results.appspot.com/'
BB_API_BASE = 'https://cr-buildbucket.appspot.com/'
CI_PREFIX = 'https://ci.chromium.org/p/chromium/builders/'
# Small named tuple for test suite entries in the
# //testing/buildbot/chromium.*.json files.
TestSuiteEntry = collections.namedtuple('TestSuiteEntry', [
'name', 'args', 'is_isolated', 'swarming'])
# Small named tuple to describe what builders a trybot uses to decide which
# tests to run.
BuilderDep = collections.namedtuple('BuilderDep', [
'builder', 'master', 'tester_builder', 'tester_master'])
def fetch_step_log(build, step, log):
"""Fetches a log from a step in a build."""
step = step.replace(' ', '_').replace('(', '_').replace(')', '_')
log_path = (
'buildbucket/cr-buildbucket.appspot.com/%s'
'/+/steps/%s/0/logs/%s/0' % (build, step, log))
data = {
'path': log_path.replace(' ', '_'),
# TODO(martiniss): Get actual project.
'project': 'chromium',
}
headers = {
'accept': 'application/json',
}
resp = requests.post(
LOGDOG_BASE + 'prpc/logdog.Logs/Get', json=data, headers=headers)
if resp.status_code != 200:
print('Unexpected status code %d'
' when requesting build information from logdog' % resp.status_code)
return None
logdog_data = json.loads(resp.text[4:])
text = ""
for packet in logdog_data['logs']:
for line in packet['text']['lines']:
text += base64.b64decode(line['value']) + line['delimiter']
return text
def run_command(cmd):
"""Small utility function to run a command.
Prints out the command before running.
"""
print(colorama.Fore.RED + '>> RUNNING the following command: <<\n%s%s' % (
colorama.Style.RESET_ALL, ' '.join(cmd)))
subprocess.check_call(cmd)
def guess_host_dimensions():
"""Guesses the approximate swarming dimensions for a host."""
# For now, just do basic os. Can add later dimensions like gpus, number of
# cores, etc...
host_os = platform.system()
return {
'os': {
# All the swarming bots are on ubuntu, so just assume that most dev
# machines which run linux would work for bots which run ubuntu, even
# if dev machines are a different distro.
'linux': 'Ubuntu',
}.get(host_os.lower(), host_os)
}
class Build(object):
"""All relevant information for an already executed build.
The constructor does several HTTP requests to get needed information from
various LUCI services.
"""
def __init__(self, build_address):
# Build address of the build.
self.build_address = urllib.unquote_plus(build_address)
assert len(self.build_address.split('/')) == 3, (
'Expected build address to look like <bucket>/<builder>/<buildnumber>, '
'but got %s' % self.build_address
)
# Dimensions the user has acknowledged are different from the build they're
# trying to debug. Once a user acks that a dimension is different, we
# shouldn't prompt them about it again.
self.acked_dimensions = set()
# List of failed test suites.
self.failed_suites = []
# Mastername of the bot. Needed to find the appropriate //testing/buildbot
# json file.
self._mastername = ''
# Buildbot id number. Used to fetch data from logdog.
self._bb_id = ''
# Chromium revision. Used to run `gclient sync`.
self.chromium_revision = ''
# Patch information. Tuple of (repo url, patch ref). Used in `gclient sync`.
self.patch_info = ('', '')
# Test results for each failed test.
self._test_results = []
# Builders this build is "emulating". Only useful for trybots. Trybots
# emulate a few builders, which means they run the tests those builders run.
# List of BuilderDep objects.
self.emulated_builders = []
@property
def builder(self):
return self.build_address.split('/')[1]
@property
def buildnumber(self):
return self.build_address.split('/')[2]
@property
def bucket(self):
return self.build_address.split('/')[0]
@property
def mastername(self):
return self._mastername
@property
def is_tryjob(self):
return bool(self.patch_info[0])
def _fetch_build_info(self):
"""Fetch basic build information from buildbucket.
Returns a tuple of (id, steps in the build, build properties)"""
assert '.' not in self.bucket, (
'Expected plain bucket with no \'.\' in it, got %s' % self.bucket)
bb_url = BB_API_BASE + 'prpc/buildbucket.v2.Builds/GetBuild'
data = {
'builder': {
# TODO(martiniss): Remove this hard coding.
'project': 'chromium',
'bucket': self.bucket,
'builder': self.builder,
},
'buildNumber': int(self.buildnumber),
'fields': 'steps,output.properties,id'
}
headers = {
'accept': 'application/json',
}
res = requests.post(bb_url, json=data, headers=headers)
# Remove XSSI header.
resp = json.loads(res.text[4:])
return (
resp['id'],
resp['steps'],
resp['output']['properties'],
)
def _parse_failed_steps(self, steps):
failures = [
step for step in steps
if 'tests' in step['name'] and step['status'] != u'SUCCESS'
]
if self.is_tryjob:
# Check for suites that were retried with patch. Suites which fail on
# 'with patch' but pass later won't show up this way (because they're
# flaky and shouldn't be re-run probably).
failures = [
step for step in failures
if '(retry shards with patch)' in step['name']
]
step_names = []
for f in failures:
for log in f['logs']:
# Just want to check that the step has a step_metadata log in it.
if log['name'] == 'step_metadata':
metadata = json.loads(fetch_step_log(
self._bb_id, f['name'], 'step_metadata'))
if metadata:
step_names.append(metadata['canonical_step_name'])
else:
step_names.append(f['name'])
return step_names
def _fetch_test_results(self, failed_suites):
results = []
for suite in failed_suites:
test_results_url = TEST_RESULTS_BASE + 'testfile?%s' % urllib.urlencode({
'builder': self.builder,
'name': 'full_results.json',
'master': self.mastername,
'testtype': '%s (with patch)' % suite,
'buildnumber': self.buildnumber,
})
data = requests.get(test_results_url).json()
results.append(data)
return results
def _parse_test_results(self, results):
test_results = {}
for suite, result in results.iteritems():
failed = []
# Need a recursive function to be able to search nested test results
# (blink web tests does this).
def helper(data, prefix=None):
if not prefix:
prefix = ()
for test, test_data in data.iteritems():
if 'expected' in test_data:
# This is a node containing test result information.
if test_data['expected'] != test_data['actual']:
if test_data['actual'].split(' ')[-1] == 'PASS':
continue
# Non blink tests use the test results format, but don't set this
# flag :(.
if (('webkit_layout' in suite or 'blink_web_tests' in suite)
and not test_data.get('is_unexpected')):
continue
failed.append('/'.join(prefix + (test,)))
else:
# This is just a prefix, doesn't contain actual result data.
helper(test_data, prefix + (test,))
helper(result['tests'])
test_results[suite] = failed
return test_results
def _fetch_build_emulation(self):
"""Fetches logdog data about which builders this build emulates."""
raw_data = fetch_step_log(self._bb_id, 'report_builders', 'bots.json')
if not raw_data:
# Try to guess, this should hopefully work. If it doesn't, something will
# throw an exception, and hopefully the user will file a bug.
return [
BuilderDep(
self.builder, self.mastername,
self.builder, self.mastername)
]
data = json.loads(raw_data)
return [
BuilderDep(
entry['buildername'], entry['mastername'],
entry['tester_buildername'], entry['tester_mastername'])
for entry in data]
def fetch_all_info(self):
"""Fetches info from various LUCI services."""
# Get basic build info.
bb_id, steps, properties = self._fetch_build_info()
self._bb_id = bb_id
self._mastername = properties['mastername']
self.chromium_revision = properties.get('got_revision')
self.patch_info = (
properties.get('patch_repository_url'),
properties.get('patch_ref'),
)
self.failed_suites = self._parse_failed_steps(steps)
self._test_results = self._parse_test_results(
dict(zip(self.failed_suites,
self._fetch_test_results(self.failed_suites))))
self.emulated_builders = self._fetch_build_emulation()
def guess_swarming_dimensions(self, suite):
explicit_dims = self.lookup_suite(suite).swarming.get('dimensions_sets', {})
if 'os' not in explicit_dims:
# Copied from
# https://cs.chromium.org/chromium/build/scripts/slave/recipe_modules/swarming/api.py?l=422&rcl=181d7618c62947cbfd9941f3d48537c92c955acf
# Also very hacky, as it uses the mastername of the bot as a key.
explicit_dims['os'] = {
'linux': 'Ubuntu-14.04',
# This is wrong often. Should refine this more.
'mac': 'Mac-10.13',
'win': 'Windows-10-15063',
}.get(self.mastername.split('.')[-1], 'Ubuntu-14.04')
return explicit_dims
def run_suite(self, suite_name, path):
suite = self.lookup_suite(suite_name)
# Check that the build they're trying to reproduce is run on approximately
# the same hardware.
swarming_dimensions = self.guess_swarming_dimensions(suite_name)
host_dimensions = guess_host_dimensions()
# TODO(https://crbug.com/929332): Very specialized for os only for now,
# change to be more general.
for dimension in set(['os']) - self.acked_dimensions:
swarming_value = swarming_dimensions[dimension]
host_values = host_dimensions[dimension]
if not swarming_value.startswith(host_values):
print (
'You are attempting to run a test suite which requires different'
' swarming dimensions than your current machine. The test suite'
' requires a %r value of %r, but we think your host machine has '
' values of %r. Do you wish to proceed with running the test? '
'(y/N)' % (
dimension, swarming_value, host_values))
response = raw_input('>> ').lower()
if response != 'y':
print('Not running test suite %s...' % suite_name)
return 1
self.acked_dimensions.add(dimension)
cases = self._test_results[suite_name]
# Blink web tests end with this.
suite_name = suite.name
if suite_name.endswith('_exparchive'):
suite_name = suite_name[:-len('_exparchive')]
cmd = [
os.path.join(CHROMIUM_ROOT, 'tools', 'mb', 'mb.py'), 'run', '-m',
self.mastername, '-b', self.builder, path, suite.name, '--',
'--%s=%s' % (
'isolated-script-test-filter' if
suite.is_isolated else 'gtest_filter',
('::' if suite.is_isolated else ':').join(cases)),
]
cmd += suite.args
temp_filename = None
if suite.is_isolated:
f, name = tempfile.mkstemp()
os.close(f)
temp_filename = name
cmd += ['--isolated-script-test-output', temp_filename]
try:
run_command(cmd)
finally:
if suite.is_isolated:
os.unlink(temp_filename)
def checkout_commands(self):
cmd = [
'gclient',
'sync',
'-r', 'src@%s' % self.chromium_revision,
]
if self.patch_info:
cmd.extend([
'--patch-ref',
'@'.join(self.patch_info)
])
yield cmd
def ensure_checkout(self):
for cmd in self.checkout_commands():
run_command(cmd)
def lookup_suite(self, suite_name):
"""Looks up information about a suite from json files in chromium src.
Returns: A list of TestSuiteEntry objects.
"""
found = []
for entry in self.emulated_builders:
with open(os.path.join(
CHROMIUM_ROOT, 'testing', 'buildbot',
'%s.json' % entry.tester_master)) as f:
data = json.load(f)
for file_buildername, builder_data in data.iteritems():
if entry.tester_builder == file_buildername:
for gtest in builder_data.get('gtest_tests', {}):
name = gtest.get('name', gtest['test'])
if name == suite_name:
found.append(TestSuiteEntry(
gtest['test'],
gtest.get('args', []),
False,
gtest.get('swarming', {}),
))
for isolated_script in builder_data.get('isolated_scripts', {}):
if isolated_script['name'] == suite_name:
found.append(TestSuiteEntry(
isolated_script['isolate_name'],
isolated_script.get('args', []),
True,
isolated_script.get('swarming', {}),
))
break
if not found:
raise Exception('Suite %s not found in //testing/buildbot files' % (
suite_name))
if len(found) > 1:
raise Exception('Suite %s found in multiple builder definitions.' % (
suite_name))
return found[0]
def main():
parser = argparse.ArgumentParser(
description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument('build_url',
help='the URL of a build you want to debug locally. '
'Usually something like '
'%sluci.chromium.try/linux-rel/265964.' % CI_PREFIX)
parser.add_argument('path', nargs='?', default='//out/Default',
help='path to output directory to build. Default is '
'%(default)s.')
parser.add_argument('-s', '--sync-checkout', action='store_true',
help='attempts to emulate the chromium checkout in the '
'build to reproduce. Does this by calling `gclient sync`')
parser.add_argument('-n', '--no-run-tests', action='store_false',
dest='run_tests', help='don\'t run any tests. Useful if '
'you just want to see what failed, or just want to sync '
'your checkout to match a failed build.')
args = parser.parse_args()
if not args.build_url.startswith(CI_PREFIX):
raise Exception('Invalid build URL %s. Expected it to start with %s' % (
args.build_url, CI_PREFIX))
build_address = args.build_url[len(CI_PREFIX):]
print('Fetching build information...')
build = Build(build_address)
build.fetch_all_info()
if args.sync_checkout:
print('The build you are attempting to debug is a %s.' % (
'tryjob' if build.is_tryjob else 'continuous build'))
print('The build checked out revision %s%s.' % (
build.chromium_revision,
' and applied the patch https://crrev.com/c/%s' % (
'/'.join(build.patch_info[1].split('/')[3:])
if build.is_tryjob else '')))
# TODO(martiniss): Consider validating the user's gclient config.
print(
'This script can attempt to reproduce the chromium checkout the build '
'executed with. It would do so by running the following commands:')
print()
for cmd in build.checkout_commands():
print(' '.join(cmd))
print()
print('Would you like this script to run these commands? (Y/n)')
response = raw_input('>> ').lower().strip()
if response in ('y', ''):
build.ensure_checkout()
else:
print('Using your existing checkout.')
if not args.run_tests:
return 0
print('Found the following failed test suites for this build:')
for i, suite in enumerate(build.failed_suites, start=1):
print(' %s. %s' % (i, suite))
print('Commands are:')
for cmd in (
'1,2....n to run that specific test suite.',
'A to run all the test suites',
'Q to quit',
):
print(' ' + cmd)
print('What would you like to do?')
response = raw_input('>> ').lower()
try:
num = int(response)
# Subtract one, since the suites start with an index of 1.
suite = build.failed_suites[num-1]
build.run_suite(suite, args.path)
return 0
except ValueError:
# If the response isn't a number, just assume it was another command.
pass
if response == 'a':
for failed_suite in build.failed_suites:
build.run_suite(failed_suite, args.path)
if response != 'q':
print('Unrecognized command "%s"'% response)
print('Exiting...')
return 0
if __name__ == '__main__':
try:
sys.exit(main())
except Exception:
traceback.print_exc()
print()
print()
print('If this exception is unexpected, please file a bug via '
'https://bit.ly/cci-generic-bug.')
sys.exit(1)