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#!/usr/bin/env python
# Copyright (c) 2013 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.
"""Run Performance Test Bisect Tool
This script is used by a trybot to run the src/tools/bisect-perf-regression.py
script with the parameters specified in run-bisect-perf-regression.cfg. It will
check out a copy of the depot in a subdirectory 'bisect' of the working
directory provided, and run the bisect-perf-regression.py script there.
"""
import imp
import optparse
import os
import subprocess
import sys
def LoadConfigFile():
"""Attempts to load the file 'run-bisect-perf-regression.cfg' as a module
and grab the global config dict.
Returns:
The config dict which should be formatted as follows:
{'command': string, 'good_revision': string, 'bad_revision': string
'metric': string}.
Returns None on failure.
"""
try:
local_vars = {}
execfile('run-bisect-perf-regression.cfg', local_vars)
return local_vars['config']
except:
return None
def RunBisectionScript(config, working_directory):
"""Attempts to execute src/tools/bisect-perf-regression.py with the parameters
passed in.
Args:
config: A dict containing the parameters to pass to the script.
Returns:
0 on success, otherwise 1.
"""
cmd = ['python', 'bisect-perf-regression.py',
'-c', config['command'],
'-g', config['good_revision'],
'-b', config['bad_revision'],
'-m', config['metric'],
'--working_directory', working_directory,
'--output_buildbot_annotations']
return_code = subprocess.call(cmd)
if return_code:
print 'Error: bisect-perf-regression.py returned with error %d' %\
return_code
print
return return_code
def main():
usage = ('%prog [options] [-- chromium-options]\n'
'Used by a trybot to run the bisection script using the parameters'
' provided in the run-bisect-perf-regression.cfg file.')
parser = optparse.OptionParser(usage=usage)
parser.add_option('-w', '--working_directory',
type='str',
help='A working directory to supply to the bisection '
'script, which will use it as the location to checkout '
'a copy of the chromium depot.')
(opts, args) = parser.parse_args()
if not opts.working_directory:
print 'Error: missing required parameter: --working_directory'
print
parser.print_help()
return 1
config = LoadConfigFile()
if not config:
print 'Error: Could not load config file.'
print
return 1
return RunBisectionScript(config, opts.working_directory)
if __name__ == '__main__':
sys.exit(main())
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