1 # Copyright 2018 The Chromium Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 6 """Writes a Perf-formated json file with stats about the given web file.""" 7 8 9 import json 10 import os 11 import subprocess 12 import sys 13 14 15 def main(): 16 input_file = sys.argv[1] 17 out_dir = sys.argv[2] 18 keystr = sys.argv[3] 19 propstr = sys.argv[4] 20 21 results = { 22 'key': { }, 23 'results': { } 24 } 25 26 props = propstr.split(' ') 27 for i in range(0, len(props), 2): 28 results[props[i]] = props[i+1] 29 30 keys = keystr.split(' ') 31 for i in range(0, len(keys), 2): 32 results['key'][keys[i]] = keys[i+1] 33 34 r = { 35 'total_size_bytes': os.path.getsize(input_file) 36 } 37 38 # Make a copy to avoid destroying the hardlinked file. 39 # Swarming hardlinks in the builds from isolated cache. 40 temp_file = input_file + '_tmp' 41 subprocess.check_call(['cp', input_file, temp_file]) 42 subprocess.check_call(['gzip', temp_file]) 43 44 r['gzip_size_bytes'] = os.path.getsize(temp_file + '.gz') 45 46 name = os.path.basename(input_file) 47 48 results['results'][name] = { 49 # We need this top level layer 'config'/slice 50 # Other analysis methods (e.g. libskia) might have 51 # slices for data on the 'code' section, etc. 52 'default' : r, 53 } 54 55 # Make debugging easier 56 print json.dumps(results, indent=2) 57 58 with open(os.path.join(out_dir, name+'.json'), 'w') as output: 59 output.write(json.dumps(results, indent=2)) 60 61 62 if '__main__' == __name__: 63 main() 64
