tools/telemetry/catapult_base/support_binaries.py

   1 # Copyright 2014 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 import os
   6 import stat
   7
   8 from catapult_base import cloud_storage
   9 from telemetry import decorators
  10 from telemetry.internal.util import path
  11
  12
  13 def _GetBinPath(binary_name, arch_name, platform_name):
  14   return os.path.join(
  15       path.GetTelemetryDir(), 'bin', platform_name, arch_name, binary_name)
  16
  17
  18 def _IsInCloudStorage(binary_name, arch_name, platform_name):
  19   return os.path.exists(
  20       _GetBinPath(binary_name, arch_name, platform_name) + '.sha1')
  21
  22
  23 @decorators.Cache
  24 def FindLocallyBuiltPath(binary_name):
  25   """Finds the most recently built |binary_name|."""
  26   command = None
  27   command_mtime = 0
  28   chrome_root = path.GetChromiumSrcDir()
  29   required_mode = os.X_OK
  30   if binary_name.endswith('.apk'):
  31     required_mode = os.R_OK
  32   for build_dir, build_type in path.GetBuildDirectories():
  33     candidate = os.path.join(chrome_root, build_dir, build_type, binary_name)
  34     if os.path.isfile(candidate) and os.access(candidate, required_mode):
  35       candidate_mtime = os.stat(candidate).st_mtime
  36       if candidate_mtime > command_mtime:
  37         command = candidate
  38         command_mtime = candidate_mtime
  39   return command
  40
  41
  42 @decorators.Cache
  43 def FindPath(binary_name, arch_name, platform_name):
  44   """Returns the path to the given binary name, pulling from the cloud if
  45   necessary."""
  46   if platform_name == 'win':
  47     binary_name += '.exe'
  48   command = FindLocallyBuiltPath(binary_name)
  49   if not command and _IsInCloudStorage(binary_name, arch_name, platform_name):
  50     cloud_storage.GetIfChanged(
  51         _GetBinPath(binary_name, arch_name, platform_name),
  52                     cloud_storage.PUBLIC_BUCKET)
  53     command = _GetBinPath(binary_name, arch_name, platform_name)
  54
  55     # Ensure the downloaded file is actually executable.
  56     if command and os.path.exists(command):
  57       os.chmod(command,
  58                stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR | stat.S_IRGRP)
  59
  60   # Return an absolute path consistently.
  61   if command:
  62     command = os.path.abspath(command)
  63   return command