blob: 6ed4295d429c5155811fdd00c72c30c7d6a41de2 [file] [log] [blame]
#!/usr/bin/env vpython
#
# Copyright 2021 The ANGLE Project Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# process_angle_perf_results.py:
# Perf result merging and upload. Adapted from the Chromium script:
# https://chromium.googlesource.com/chromium/src/+/main/tools/perf/process_perf_results.py
from __future__ import print_function
import os
import six
import sys
# Swarming runs merge scripts with its python and some really old modules.
if __name__ == '__main__' and 'ensure_binary' not in dir(six):
print('spawning via vpython due to an old six version (%s)' % six.__version__)
import subprocess
sys.exit(subprocess.call(['vpython', os.path.realpath(__file__)] + sys.argv[1:]))
import argparse
import collections
import json
import logging
import multiprocessing
import shutil
import tempfile
import time
import uuid
logging.basicConfig(
level=logging.INFO,
format='(%(levelname)s) %(asctime)s pid=%(process)d'
' %(module)s.%(funcName)s:%(lineno)d %(message)s')
d = os.path.dirname
ANGLE_DIR = d(d(os.path.realpath(__file__)))
sys.path.append(os.path.join(ANGLE_DIR, 'tools', 'perf'))
import cross_device_test_config
from core import path_util
path_util.AddTelemetryToPath()
from core import upload_results_to_perf_dashboard
from core import bot_platforms
from core import results_merger
path_util.AddAndroidPylibToPath()
try:
from pylib.utils import logdog_helper
except ImportError:
pass
path_util.AddTracingToPath()
from tracing.value import histogram
from tracing.value import histogram_set
from tracing.value.diagnostics import generic_set
from tracing.value.diagnostics import reserved_infos
RESULTS_URL = 'https://chromeperf.appspot.com'
JSON_CONTENT_TYPE = 'application/json'
MACHINE_GROUP = 'ANGLE'
BUILD_URL = 'https://ci.chromium.org/ui/p/angle/builders/ci/%s/%d'
def _upload_perf_results(json_to_upload, name, configuration_name, build_properties,
output_json_file):
"""Upload the contents of result JSON(s) to the perf dashboard."""
args = [
'--buildername',
build_properties['buildername'],
'--buildnumber',
build_properties['buildnumber'],
'--name',
name,
'--configuration-name',
configuration_name,
'--results-file',
json_to_upload,
'--results-url',
RESULTS_URL,
'--output-json-file',
output_json_file,
'--perf-dashboard-machine-group',
MACHINE_GROUP,
'--got-angle-revision',
build_properties['got_angle_revision'],
'--send-as-histograms',
'--project',
'angle',
]
if build_properties.get('git_revision'):
args.append('--git-revision')
args.append(build_properties['git_revision'])
#TODO(crbug.com/1072729): log this in top level
logging.info('upload_results_to_perf_dashboard: %s.' % args)
return upload_results_to_perf_dashboard.main(args)
def _merge_json_output(output_json, jsons_to_merge, extra_links, test_cross_device=False):
"""Merges the contents of one or more results JSONs.
Args:
output_json: A path to a JSON file to which the merged results should be
written.
jsons_to_merge: A list of JSON files that should be merged.
extra_links: a (key, value) map in which keys are the human-readable strings
which describe the data, and value is logdog url that contain the data.
"""
begin_time = time.time()
merged_results = results_merger.merge_test_results(jsons_to_merge, test_cross_device)
# Only append the perf results links if present
if extra_links:
merged_results['links'] = extra_links
with open(output_json, 'w') as f:
json.dump(merged_results, f)
end_time = time.time()
print_duration('Merging json test results', begin_time, end_time)
return 0
def _handle_perf_json_test_results(benchmark_directory_map, test_results_list):
"""Checks the test_results.json under each folder:
1. mark the benchmark 'enabled' if tests results are found
2. add the json content to a list for non-ref.
"""
begin_time = time.time()
benchmark_enabled_map = {}
for benchmark_name, directories in benchmark_directory_map.items():
for directory in directories:
# Obtain the test name we are running
is_ref = '.reference' in benchmark_name
enabled = True
try:
with open(os.path.join(directory, 'test_results.json')) as json_data:
json_results = json.load(json_data)
if not json_results:
# Output is null meaning the test didn't produce any results.
# Want to output an error and continue loading the rest of the
# test results.
logging.warning('No results produced for %s, skipping upload' % directory)
continue
if json_results.get('version') == 3:
# Non-telemetry tests don't have written json results but
# if they are executing then they are enabled and will generate
# chartjson results.
if not bool(json_results.get('tests')):
enabled = False
if not is_ref:
# We don't need to upload reference build data to the
# flakiness dashboard since we don't monitor the ref build
test_results_list.append(json_results)
except IOError as e:
# TODO(crbug.com/936602): Figure out how to surface these errors. Should
# we have a non-zero exit code if we error out?
logging.error('Failed to obtain test results for %s: %s', benchmark_name, e)
continue
if not enabled:
# We don't upload disabled benchmarks or tests that are run
# as a smoke test
logging.info('Benchmark %s ran no tests on at least one shard' % benchmark_name)
continue
benchmark_enabled_map[benchmark_name] = True
end_time = time.time()
print_duration('Analyzing perf json test results', begin_time, end_time)
return benchmark_enabled_map
def _generate_unique_logdog_filename(name_prefix):
return name_prefix + '_' + str(uuid.uuid4())
def _handle_perf_logs(benchmark_directory_map, extra_links):
""" Upload benchmark logs to logdog and add a page entry for them. """
begin_time = time.time()
benchmark_logs_links = collections.defaultdict(list)
for benchmark_name, directories in benchmark_directory_map.items():
for directory in directories:
benchmark_log_file = os.path.join(directory, 'benchmark_log.txt')
if os.path.exists(benchmark_log_file):
with open(benchmark_log_file) as f:
uploaded_link = logdog_helper.text(
name=_generate_unique_logdog_filename(benchmark_name), data=f.read())
benchmark_logs_links[benchmark_name].append(uploaded_link)
logdog_file_name = _generate_unique_logdog_filename('Benchmarks_Logs')
logdog_stream = logdog_helper.text(
logdog_file_name,
json.dumps(benchmark_logs_links, sort_keys=True, indent=4, separators=(',', ': ')),
content_type=JSON_CONTENT_TYPE)
extra_links['Benchmarks logs'] = logdog_stream
end_time = time.time()
print_duration('Generating perf log streams', begin_time, end_time)
def _handle_benchmarks_shard_map(benchmarks_shard_map_file, extra_links):
begin_time = time.time()
with open(benchmarks_shard_map_file) as f:
benchmarks_shard_data = f.read()
logdog_file_name = _generate_unique_logdog_filename('Benchmarks_Shard_Map')
logdog_stream = logdog_helper.text(
logdog_file_name, benchmarks_shard_data, content_type=JSON_CONTENT_TYPE)
extra_links['Benchmarks shard map'] = logdog_stream
end_time = time.time()
print_duration('Generating benchmark shard map stream', begin_time, end_time)
def _get_benchmark_name(directory):
return os.path.basename(directory).replace(" benchmark", "")
def _scan_output_dir(task_output_dir):
benchmark_directory_map = {}
benchmarks_shard_map_file = None
directory_list = [
f for f in os.listdir(task_output_dir)
if not os.path.isfile(os.path.join(task_output_dir, f))
]
benchmark_directory_list = []
for directory in directory_list:
for f in os.listdir(os.path.join(task_output_dir, directory)):
path = os.path.join(task_output_dir, directory, f)
if os.path.isdir(path):
benchmark_directory_list.append(path)
elif path.endswith('benchmarks_shard_map.json'):
benchmarks_shard_map_file = path
# Now create a map of benchmark name to the list of directories
# the lists were written to.
for directory in benchmark_directory_list:
benchmark_name = _get_benchmark_name(directory)
if benchmark_name in benchmark_directory_map.keys():
benchmark_directory_map[benchmark_name].append(directory)
else:
benchmark_directory_map[benchmark_name] = [directory]
return benchmark_directory_map, benchmarks_shard_map_file
def process_perf_results(output_json,
configuration_name,
build_properties,
task_output_dir,
smoke_test_mode,
output_results_dir,
lightweight=False,
skip_perf=False):
"""Process perf results.
Consists of merging the json-test-format output, uploading the perf test
output (histogram), and store the benchmark logs in logdog.
Each directory in the task_output_dir represents one benchmark
that was run. Within this directory, there is a subdirectory with the name
of the benchmark that was run. In that subdirectory, there is a
perftest-output.json file containing the performance results in histogram
format and an output.json file containing the json test results for the
benchmark.
Returns:
(return_code, upload_results_map):
return_code is 0 if the whole operation is successful, non zero otherwise.
benchmark_upload_result_map: the dictionary that describe which benchmarks
were successfully uploaded.
"""
handle_perf = not lightweight or not skip_perf
handle_non_perf = not lightweight or skip_perf
logging.info('lightweight mode: %r; handle_perf: %r; handle_non_perf: %r' %
(lightweight, handle_perf, handle_non_perf))
begin_time = time.time()
return_code = 0
benchmark_upload_result_map = {}
benchmark_directory_map, benchmarks_shard_map_file = _scan_output_dir(task_output_dir)
test_results_list = []
extra_links = {}
if handle_non_perf:
# First, upload benchmarks shard map to logdog and add a page
# entry for it in extra_links.
if benchmarks_shard_map_file:
_handle_benchmarks_shard_map(benchmarks_shard_map_file, extra_links)
# Second, upload all the benchmark logs to logdog and add a page entry for
# those links in extra_links.
_handle_perf_logs(benchmark_directory_map, extra_links)
# Then try to obtain the list of json test results to merge
# and determine the status of each benchmark.
benchmark_enabled_map = _handle_perf_json_test_results(benchmark_directory_map,
test_results_list)
build_properties_map = json.loads(build_properties)
if not configuration_name:
# we are deprecating perf-id crbug.com/817823
configuration_name = build_properties_map['buildername']
_update_perf_results_for_calibration(benchmarks_shard_map_file, benchmark_enabled_map,
benchmark_directory_map, configuration_name)
if not smoke_test_mode and handle_perf:
try:
return_code, benchmark_upload_result_map = _handle_perf_results(
benchmark_enabled_map, benchmark_directory_map, configuration_name,
build_properties_map, extra_links, output_results_dir)
except Exception:
logging.exception('Error handling perf results jsons')
return_code = 1
if handle_non_perf:
# Finally, merge all test results json, add the extra links and write out to
# output location
try:
_merge_json_output(output_json, test_results_list, extra_links,
configuration_name in cross_device_test_config.TARGET_DEVICES)
except Exception:
logging.exception('Error handling test results jsons.')
end_time = time.time()
print_duration('Total process_perf_results', begin_time, end_time)
return return_code, benchmark_upload_result_map
def _merge_histogram_results(histogram_lists):
merged_results = []
for histogram_list in histogram_lists:
merged_results += histogram_list
return merged_results
def _load_histogram_set_from_dict(data):
histograms = histogram_set.HistogramSet()
histograms.ImportDicts(data)
return histograms
def _add_build_info(results, benchmark_name, build_properties):
histograms = _load_histogram_set_from_dict(results)
common_diagnostics = {
reserved_infos.MASTERS:
build_properties['builder_group'],
reserved_infos.BOTS:
build_properties['buildername'],
reserved_infos.POINT_ID:
build_properties['angle_commit_pos'],
reserved_infos.BENCHMARKS:
benchmark_name,
reserved_infos.ANGLE_REVISIONS:
build_properties['got_angle_revision'],
reserved_infos.BUILD_URLS:
BUILD_URL % (build_properties['buildername'], build_properties['buildnumber']),
}
for k, v in common_diagnostics.items():
histograms.AddSharedDiagnosticToAllHistograms(k.name, generic_set.GenericSet([v]))
return histograms.AsDicts()
def _merge_perf_results(benchmark_name, results_filename, directories, build_properties):
begin_time = time.time()
collected_results = []
for directory in directories:
filename = os.path.join(directory, 'perf_results.json')
try:
with open(filename) as pf:
collected_results.append(json.load(pf))
except IOError as e:
# TODO(crbug.com/936602): Figure out how to surface these errors. Should
# we have a non-zero exit code if we error out?
logging.error('Failed to obtain perf results from %s: %s', directory, e)
if not collected_results:
logging.error('Failed to obtain any perf results from %s.', benchmark_name)
return
# Assuming that multiple shards will be histogram set
# Non-telemetry benchmarks only ever run on one shard
merged_results = []
assert (isinstance(collected_results[0], list))
merged_results = _merge_histogram_results(collected_results)
# Write additional histogram build info.
merged_results = _add_build_info(merged_results, benchmark_name, build_properties)
with open(results_filename, 'w') as rf:
json.dump(merged_results, rf)
end_time = time.time()
print_duration(('%s results merging' % (benchmark_name)), begin_time, end_time)
def _upload_individual(benchmark_name, directories, configuration_name, build_properties,
output_json_file):
tmpfile_dir = tempfile.mkdtemp()
try:
upload_begin_time = time.time()
# There are potentially multiple directores with results, re-write and
# merge them if necessary
results_filename = None
if len(directories) > 1:
merge_perf_dir = os.path.join(os.path.abspath(tmpfile_dir), benchmark_name)
if not os.path.exists(merge_perf_dir):
os.makedirs(merge_perf_dir)
results_filename = os.path.join(merge_perf_dir, 'merged_perf_results.json')
_merge_perf_results(benchmark_name, results_filename, directories, build_properties)
else:
# It was only written to one shard, use that shards data
results_filename = os.path.join(directories[0], 'perf_results.json')
results_size_in_mib = os.path.getsize(results_filename) / (2**20)
logging.info('Uploading perf results from %s benchmark (size %s Mib)' %
(benchmark_name, results_size_in_mib))
with open(output_json_file, 'w') as oj:
upload_return_code = _upload_perf_results(results_filename, benchmark_name,
configuration_name, build_properties, oj)
upload_end_time = time.time()
print_duration(('%s upload time' % (benchmark_name)), upload_begin_time,
upload_end_time)
return (benchmark_name, upload_return_code == 0)
finally:
shutil.rmtree(tmpfile_dir)
def _upload_individual_benchmark(params):
try:
return _upload_individual(*params)
except Exception:
benchmark_name = params[0]
upload_succeed = False
logging.exception('Error uploading perf result of %s' % benchmark_name)
return benchmark_name, upload_succeed
def _GetCpuCount(log=True):
try:
cpu_count = multiprocessing.cpu_count()
if sys.platform == 'win32':
# TODO(crbug.com/1190269) - we can't use more than 56
# cores on Windows or Python3 may hang.
cpu_count = min(cpu_count, 56)
return cpu_count
except NotImplementedError:
if log:
logging.warn('Failed to get a CPU count for this bot. See crbug.com/947035.')
# TODO(crbug.com/948281): This is currently set to 4 since the mac masters
# only have 4 cores. Once we move to all-linux, this can be increased or
# we can even delete this whole function and use multiprocessing.cpu_count()
# directly.
return 4
def _load_shard_id_from_test_results(directory):
shard_id = None
test_json_path = os.path.join(directory, 'test_results.json')
try:
with open(test_json_path) as f:
test_json = json.load(f)
all_results = test_json['tests']
for _, benchmark_results in all_results.items():
for _, measurement_result in benchmark_results.items():
shard_id = measurement_result['shard']
break
except IOError as e:
logging.error('Failed to open test_results.json from %s: %s', test_json_path, e)
except KeyError as e:
logging.error('Failed to locate results in test_results.json: %s', e)
return shard_id
def _find_device_id_by_shard_id(benchmarks_shard_map_file, shard_id):
try:
with open(benchmarks_shard_map_file) as f:
shard_map_json = json.load(f)
device_id = shard_map_json['extra_infos']['bot #%s' % shard_id]
except KeyError as e:
logging.error('Failed to locate device name in shard map: %s', e)
return device_id
def _update_perf_json_with_summary_on_device_id(directory, device_id):
perf_json_path = os.path.join(directory, 'perf_results.json')
try:
with open(perf_json_path, 'r') as f:
perf_json = json.load(f)
except IOError as e:
logging.error('Failed to open perf_results.json from %s: %s', perf_json_path, e)
summary_key_guid = str(uuid.uuid4())
summary_key_generic_set = {
'values': ['device_id'],
'guid': summary_key_guid,
'type': 'GenericSet'
}
perf_json.insert(0, summary_key_generic_set)
logging.info('Inserted summary key generic set for perf result in %s: %s', directory,
summary_key_generic_set)
stories_guids = set()
for entry in perf_json:
if 'diagnostics' in entry:
entry['diagnostics']['summaryKeys'] = summary_key_guid
stories_guids.add(entry['diagnostics']['stories'])
for entry in perf_json:
if 'guid' in entry and entry['guid'] in stories_guids:
entry['values'].append(device_id)
try:
with open(perf_json_path, 'w') as f:
json.dump(perf_json, f)
except IOError as e:
logging.error('Failed to writing perf_results.json to %s: %s', perf_json_path, e)
logging.info('Finished adding device id %s in perf result.', device_id)
def _should_add_device_id_in_perf_result(builder_name):
# We should always add device id in calibration builders.
# For testing purpose, adding fyi as well for faster turnaround, because
# calibration builders run every 24 hours.
return any([builder_name == p.name for p in bot_platforms.CALIBRATION_PLATFORMS
]) or (builder_name == 'android-pixel2-perf-fyi')
def _update_perf_results_for_calibration(benchmarks_shard_map_file, benchmark_enabled_map,
benchmark_directory_map, configuration_name):
if not _should_add_device_id_in_perf_result(configuration_name):
return
logging.info('Updating perf results for %s.', configuration_name)
for benchmark_name, directories in benchmark_directory_map.items():
if not benchmark_enabled_map.get(benchmark_name, False):
continue
for directory in directories:
shard_id = _load_shard_id_from_test_results(directory)
device_id = _find_device_id_by_shard_id(benchmarks_shard_map_file, shard_id)
_update_perf_json_with_summary_on_device_id(directory, device_id)
def _handle_perf_results(benchmark_enabled_map, benchmark_directory_map, configuration_name,
build_properties, extra_links, output_results_dir):
"""
Upload perf results to the perf dashboard.
This method also upload the perf results to logdog and augment it to
|extra_links|.
Returns:
(return_code, benchmark_upload_result_map)
return_code is 0 if this upload to perf dashboard successfully, 1
otherwise.
benchmark_upload_result_map is a dictionary describes which benchmark
was successfully uploaded.
"""
begin_time = time.time()
# Upload all eligible benchmarks to the perf dashboard
results_dict = {}
invocations = []
for benchmark_name, directories in benchmark_directory_map.items():
if not benchmark_enabled_map.get(benchmark_name, False):
continue
# Create a place to write the perf results that you will write out to
# logdog.
output_json_file = os.path.join(output_results_dir, (str(uuid.uuid4()) + benchmark_name))
results_dict[benchmark_name] = output_json_file
#TODO(crbug.com/1072729): pass final arguments instead of build properties
# and configuration_name
invocations.append(
(benchmark_name, directories, configuration_name, build_properties, output_json_file))
# Kick off the uploads in multiple processes
# crbug.com/1035930: We are hitting HTTP Response 429. Limit ourselves
# to 2 processes to avoid this error. Uncomment the following code once
# the problem is fixed on the dashboard side.
# pool = multiprocessing.Pool(_GetCpuCount())
pool = multiprocessing.Pool(2)
upload_result_timeout = False
try:
async_result = pool.map_async(_upload_individual_benchmark, invocations)
# TODO(crbug.com/947035): What timeout is reasonable?
results = async_result.get(timeout=4000)
except multiprocessing.TimeoutError:
upload_result_timeout = True
logging.error('Timeout uploading benchmarks to perf dashboard in parallel')
results = []
for benchmark_name in benchmark_directory_map:
results.append((benchmark_name, False))
finally:
pool.terminate()
# Keep a mapping of benchmarks to their upload results
benchmark_upload_result_map = {}
for r in results:
benchmark_upload_result_map[r[0]] = r[1]
logdog_dict = {}
upload_failures_counter = 0
logdog_stream = None
logdog_label = 'Results Dashboard'
for benchmark_name, output_file in results_dict.items():
upload_succeed = benchmark_upload_result_map[benchmark_name]
if not upload_succeed:
upload_failures_counter += 1
is_reference = '.reference' in benchmark_name
_write_perf_data_to_logfile(
benchmark_name,
output_file,
configuration_name,
build_properties,
logdog_dict,
is_reference,
upload_failure=not upload_succeed)
logdog_file_name = _generate_unique_logdog_filename('Results_Dashboard_')
logdog_stream = logdog_helper.text(
logdog_file_name,
json.dumps(dict(logdog_dict), sort_keys=True, indent=4, separators=(',', ': ')),
content_type=JSON_CONTENT_TYPE)
if upload_failures_counter > 0:
logdog_label += (' %s merge script perf data upload failures' % upload_failures_counter)
extra_links[logdog_label] = logdog_stream
end_time = time.time()
print_duration('Uploading results to perf dashboard', begin_time, end_time)
if upload_result_timeout or upload_failures_counter > 0:
return 1, benchmark_upload_result_map
return 0, benchmark_upload_result_map
def _write_perf_data_to_logfile(benchmark_name, output_file, configuration_name, build_properties,
logdog_dict, is_ref, upload_failure):
viewer_url = None
# logdog file to write perf results to
if os.path.exists(output_file):
results = None
with open(output_file) as f:
try:
results = json.load(f)
except ValueError:
logging.error('Error parsing perf results JSON for benchmark %s' % benchmark_name)
if results:
try:
json_fname = _generate_unique_logdog_filename(benchmark_name)
output_json_file = logdog_helper.open_text(json_fname)
json.dump(results, output_json_file, indent=4, separators=(',', ': '))
except ValueError as e:
logging.error('ValueError: "%s" while dumping output to logdog' % e)
finally:
output_json_file.close()
viewer_url = output_json_file.get_viewer_url()
else:
logging.warning("Perf results JSON file doesn't exist for benchmark %s" % benchmark_name)
base_benchmark_name = benchmark_name.replace('.reference', '')
if base_benchmark_name not in logdog_dict:
logdog_dict[base_benchmark_name] = {}
# add links for the perf results and the dashboard url to
# the logs section of buildbot
if is_ref:
if viewer_url:
logdog_dict[base_benchmark_name]['perf_results_ref'] = viewer_url
if upload_failure:
logdog_dict[base_benchmark_name]['ref_upload_failed'] = 'True'
else:
# TODO(jmadill): Figure out if we can get a dashboard URL here. http://anglebug.com/6090
# logdog_dict[base_benchmark_name]['dashboard_url'] = (
# upload_results_to_perf_dashboard.GetDashboardUrl(benchmark_name, configuration_name,
# RESULTS_URL,
# build_properties['got_revision_cp'],
# _GetMachineGroup(build_properties)))
if viewer_url:
logdog_dict[base_benchmark_name]['perf_results'] = viewer_url
if upload_failure:
logdog_dict[base_benchmark_name]['upload_failed'] = 'True'
def print_duration(step, start, end):
logging.info('Duration of %s: %d seconds' % (step, end - start))
def main():
""" See collect_task.collect_task for more on the merge script API. """
logging.info(sys.argv)
parser = argparse.ArgumentParser()
# configuration-name (previously perf-id) is the name of bot the tests run on
# For example, buildbot-test is the name of the android-go-perf bot
# configuration-name and results-url are set in the json file which is going
# away tools/perf/core/chromium.perf.fyi.extras.json
parser.add_argument('--configuration-name', help=argparse.SUPPRESS)
parser.add_argument('--build-properties', help=argparse.SUPPRESS)
parser.add_argument('--summary-json', help=argparse.SUPPRESS)
parser.add_argument('--task-output-dir', help=argparse.SUPPRESS)
parser.add_argument('-o', '--output-json', required=True, help=argparse.SUPPRESS)
parser.add_argument(
'--skip-perf',
action='store_true',
help='In lightweight mode, using --skip-perf will skip the performance'
' data handling.')
parser.add_argument(
'--lightweight',
action='store_true',
help='Choose the lightweight mode in which the perf result handling'
' is performed on a separate VM.')
parser.add_argument('json_files', nargs='*', help=argparse.SUPPRESS)
parser.add_argument(
'--smoke-test-mode',
action='store_true',
help='This test should be run in smoke test mode'
' meaning it does not upload to the perf dashboard')
args = parser.parse_args()
output_results_dir = tempfile.mkdtemp('outputresults')
try:
return_code, _ = process_perf_results(args.output_json, args.configuration_name,
args.build_properties, args.task_output_dir,
args.smoke_test_mode, output_results_dir,
args.lightweight, args.skip_perf)
return return_code
finally:
shutil.rmtree(output_results_dir)
if __name__ == '__main__':
sys.exit(main())