commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 1 | #!/usr/bin/python |
| 2 | |
| 3 | # Copyright (c) 2014 The Chromium Authors. All rights reserved. |
| 4 | # Use of this source code is governed by a BSD-style license that can be |
| 5 | # found in the LICENSE file. |
| 6 | |
| 7 | |
| 8 | """Generate new bench expectations from results of trybots on a code review.""" |
| 9 | |
| 10 | |
| 11 | import collections |
| 12 | import compare_codereview |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 13 | import json |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 14 | import os |
| 15 | import re |
| 16 | import shutil |
borenet | 4621788 | 2014-07-02 12:52:34 -0700 | [diff] [blame] | 17 | import subprocess |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 18 | import sys |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 19 | import urllib2 |
| 20 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 21 | |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 22 | BENCH_DATA_URL = 'gs://chromium-skia-gm/perfdata/%s/%s/bench_*_data_*' |
| 23 | BUILD_STATUS_SUCCESS = 0 |
| 24 | BUILD_STATUS_WARNINGS = 1 |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 25 | CHECKOUT_PATH = os.path.realpath(os.path.join( |
| 26 | os.path.dirname(os.path.abspath(__file__)), os.pardir)) |
| 27 | TMP_BENCH_DATA_DIR = os.path.join(CHECKOUT_PATH, '.bench_data') |
| 28 | |
| 29 | |
commit-bot@chromium.org | e65a44a | 2014-05-29 14:31:28 +0000 | [diff] [blame] | 30 | TryBuild = collections.namedtuple( |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 31 | 'TryBuild', ['builder_name', 'build_number', 'is_finished', 'json_url']) |
commit-bot@chromium.org | e65a44a | 2014-05-29 14:31:28 +0000 | [diff] [blame] | 32 | |
| 33 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 34 | def find_all_builds(codereview_url): |
| 35 | """Finds and returns information about trybot runs for a code review. |
| 36 | |
| 37 | Args: |
| 38 | codereview_url: URL of the codereview in question. |
| 39 | |
| 40 | Returns: |
| 41 | List of NamedTuples: (builder_name, build_number, is_finished) |
| 42 | """ |
| 43 | results = compare_codereview.CodeReviewHTMLParser().parse(codereview_url) |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 44 | try_builds = [] |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 45 | for builder, data in results.iteritems(): |
| 46 | if builder.startswith('Perf'): |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 47 | build_num = None |
| 48 | json_url = None |
| 49 | if data.url: |
| 50 | split_url = data.url.split('/') |
| 51 | build_num = split_url[-1] |
| 52 | split_url.insert(split_url.index('builders'), 'json') |
| 53 | json_url = '/'.join(split_url) |
commit-bot@chromium.org | cac02e5 | 2014-05-29 16:05:48 +0000 | [diff] [blame] | 54 | is_finished = (data.status not in ('pending', 'try-pending') and |
| 55 | build_num is not None) |
| 56 | try_builds.append(TryBuild(builder_name=builder, |
| 57 | build_number=build_num, |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 58 | is_finished=is_finished, |
| 59 | json_url=json_url)) |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 60 | return try_builds |
| 61 | |
| 62 | |
commit-bot@chromium.org | e65a44a | 2014-05-29 14:31:28 +0000 | [diff] [blame] | 63 | def _all_trybots_finished(try_builds): |
| 64 | """Return True iff all of the given try jobs have finished. |
| 65 | |
| 66 | Args: |
| 67 | try_builds: list of TryBuild instances. |
| 68 | |
| 69 | Returns: |
| 70 | True if all of the given try jobs have finished, otherwise False. |
| 71 | """ |
| 72 | for try_build in try_builds: |
| 73 | if not try_build.is_finished: |
| 74 | return False |
| 75 | return True |
| 76 | |
| 77 | |
| 78 | def all_trybots_finished(codereview_url): |
| 79 | """Return True iff all of the try jobs on the given codereview have finished. |
| 80 | |
| 81 | Args: |
| 82 | codereview_url: string; URL of the codereview. |
| 83 | |
| 84 | Returns: |
| 85 | True if all of the try jobs have finished, otherwise False. |
| 86 | """ |
| 87 | return _all_trybots_finished(find_all_builds(codereview_url)) |
| 88 | |
| 89 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 90 | def get_bench_data(builder, build_num, dest_dir): |
| 91 | """Download the bench data for the given builder at the given build_num. |
| 92 | |
| 93 | Args: |
| 94 | builder: string; name of the builder. |
| 95 | build_num: string; build number. |
| 96 | dest_dir: string; destination directory for the bench data. |
| 97 | """ |
| 98 | url = BENCH_DATA_URL % (builder, build_num) |
borenet | 4621788 | 2014-07-02 12:52:34 -0700 | [diff] [blame] | 99 | subprocess.check_call(['gsutil', 'cp', '-R', url, dest_dir]) |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 100 | |
| 101 | |
| 102 | def find_revision_from_downloaded_data(dest_dir): |
| 103 | """Finds the revision at which the downloaded data was generated. |
| 104 | |
| 105 | Args: |
| 106 | dest_dir: string; directory holding the downloaded data. |
| 107 | |
| 108 | Returns: |
| 109 | The revision (git commit hash) at which the downloaded data was |
| 110 | generated, or None if no revision can be found. |
| 111 | """ |
| 112 | for data_file in os.listdir(dest_dir): |
| 113 | match = re.match('bench_(?P<revision>[0-9a-fA-F]{2,40})_data.*', data_file) |
| 114 | if match: |
| 115 | return match.group('revision') |
| 116 | return None |
| 117 | |
| 118 | |
| 119 | class TrybotNotFinishedError(Exception): |
| 120 | pass |
| 121 | |
| 122 | |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 123 | def _step_succeeded(try_build, step_name): |
| 124 | """Return True if the given step succeeded and False otherwise. |
| 125 | |
| 126 | This function talks to the build master's JSON interface, which is slow. |
| 127 | |
| 128 | TODO(borenet): There are now a few places which talk to the master's JSON |
| 129 | interface. Maybe it'd be worthwhile to create a module which does this. |
| 130 | |
| 131 | Args: |
| 132 | try_build: TryBuild instance; the build we're concerned about. |
| 133 | step_name: string; name of the step we're concerned about. |
| 134 | """ |
| 135 | step_url = '/'.join((try_build.json_url, 'steps', step_name)) |
| 136 | step_data = json.load(urllib2.urlopen(step_url)) |
| 137 | # step_data['results'] may not be present if the step succeeded. If present, |
| 138 | # it is a list whose first element is a result code, per the documentation: |
| 139 | # http://docs.buildbot.net/latest/developer/results.html |
| 140 | result = step_data.get('results', [BUILD_STATUS_SUCCESS])[0] |
| 141 | if result in (BUILD_STATUS_SUCCESS, BUILD_STATUS_WARNINGS): |
| 142 | return True |
| 143 | return False |
| 144 | |
| 145 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 146 | def gen_bench_expectations_from_codereview(codereview_url, |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 147 | error_on_unfinished=True, |
| 148 | error_on_try_failure=True): |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 149 | """Generate bench expectations from a code review. |
| 150 | |
| 151 | Scans the given code review for Perf trybot runs. Downloads the results of |
| 152 | finished trybots and uses them to generate new expectations for their |
| 153 | waterfall counterparts. |
| 154 | |
| 155 | Args: |
| 156 | url: string; URL of the code review. |
| 157 | error_on_unfinished: bool; throw an error if any trybot has not finished. |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 158 | error_on_try_failure: bool; throw an error if any trybot failed an |
| 159 | important step. |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 160 | """ |
| 161 | try_builds = find_all_builds(codereview_url) |
| 162 | |
| 163 | # Verify that all trybots have finished running. |
commit-bot@chromium.org | e65a44a | 2014-05-29 14:31:28 +0000 | [diff] [blame] | 164 | if error_on_unfinished and not _all_trybots_finished(try_builds): |
| 165 | raise TrybotNotFinishedError('Not all trybots have finished.') |
| 166 | |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 167 | failed_run = [] |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 168 | failed_data_pull = [] |
| 169 | failed_gen_expectations = [] |
| 170 | |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 171 | # Don't even try to do anything if BenchPictures, PostBench, or |
| 172 | # UploadBenchResults failed. |
| 173 | for try_build in try_builds: |
| 174 | for step in ('BenchPictures', 'PostBench', 'UploadBenchResults'): |
| 175 | if not _step_succeeded(try_build, step): |
| 176 | msg = '%s failed on %s!' % (step, try_build.builder_name) |
| 177 | if error_on_try_failure: |
| 178 | raise Exception(msg) |
| 179 | print 'WARNING: %s Skipping.' % msg |
| 180 | failed_run.append(try_build.builder_name) |
| 181 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 182 | if os.path.isdir(TMP_BENCH_DATA_DIR): |
| 183 | shutil.rmtree(TMP_BENCH_DATA_DIR) |
| 184 | |
| 185 | for try_build in try_builds: |
| 186 | try_builder = try_build.builder_name |
borenet | b26130a | 2014-07-02 09:37:03 -0700 | [diff] [blame] | 187 | |
| 188 | # Even if we're not erroring out on try failures, we can't generate new |
| 189 | # expectations for failed bots. |
| 190 | if try_builder in failed_run: |
| 191 | continue |
| 192 | |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 193 | builder = try_builder.replace('-Trybot', '') |
| 194 | |
| 195 | # Download the data. |
| 196 | dest_dir = os.path.join(TMP_BENCH_DATA_DIR, builder) |
| 197 | os.makedirs(dest_dir) |
| 198 | try: |
| 199 | get_bench_data(try_builder, try_build.build_number, dest_dir) |
borenet | 4621788 | 2014-07-02 12:52:34 -0700 | [diff] [blame] | 200 | except subprocess.CalledProcessError: |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 201 | failed_data_pull.append(try_builder) |
| 202 | continue |
| 203 | |
| 204 | # Find the revision at which the data was generated. |
| 205 | revision = find_revision_from_downloaded_data(dest_dir) |
| 206 | if not revision: |
| 207 | # If we can't find a revision, then something is wrong with the data we |
| 208 | # downloaded. Skip this builder. |
| 209 | failed_data_pull.append(try_builder) |
| 210 | continue |
| 211 | |
| 212 | # Generate new expectations. |
| 213 | output_file = os.path.join(CHECKOUT_PATH, 'expectations', 'bench', |
| 214 | 'bench_expectations_%s.txt' % builder) |
| 215 | try: |
borenet | 4621788 | 2014-07-02 12:52:34 -0700 | [diff] [blame] | 216 | subprocess.check_call(['python', |
| 217 | os.path.join(CHECKOUT_PATH, 'bench', |
| 218 | 'gen_bench_expectations.py'), |
| 219 | '-b', builder, '-o', output_file, |
| 220 | '-d', dest_dir, '-r', revision]) |
| 221 | except subprocess.CalledProcessError: |
commit-bot@chromium.org | ea6cb91 | 2014-05-28 17:30:10 +0000 | [diff] [blame] | 222 | failed_gen_expectations.append(builder) |
| 223 | |
| 224 | failure = '' |
| 225 | if failed_data_pull: |
| 226 | failure += 'Failed to load data for: %s\n\n' % ','.join(failed_data_pull) |
| 227 | if failed_gen_expectations: |
| 228 | failure += 'Failed to generate expectations for: %s\n\n' % ','.join( |
| 229 | failed_gen_expectations) |
| 230 | if failure: |
| 231 | raise Exception(failure) |
| 232 | |
| 233 | |
| 234 | if __name__ == '__main__': |
| 235 | gen_bench_expectations_from_codereview(sys.argv[1]) |
| 236 | |