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# Copyright 2018 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.
from contextlib import contextmanager
from recipe_engine import recipe_api
class WindowsSDKApi(recipe_api.RecipeApi):
"""API for using Windows SDK distributed via CIPD."""
def __init__(self, sdk_properties, *args, **kwargs):
super(WindowsSDKApi, self).__init__(*args, **kwargs)
self._sdk_properties = sdk_properties
@contextmanager
def __call__(self, path=None, version=None, enabled=True):
"""Setups the SDK environment when enabled.
Args:
path (path): Path to a directory where to install the SDK
(default is '[start_dir]/cipd/windows_sdk')
version (str): CIPD instance ID, tag or ref of the SDK
(default is set via $infra/windows_sdk.version property)
enabled (bool): Whether the SDK should be used or not.
Raises:
StepFailure or InfraFailure.
"""
if enabled:
sdk_dir = self._ensure_sdk(
path or self.m.path['start_dir'].join('cipd', 'windows_sdk'),
version or self._sdk_properties['version'])
try:
with self.m.context(**self._sdk_env(sdk_dir)):
yield
finally:
if self.m.platform.is_win:
# cl.exe automatically starts background mspdbsrv.exe daemon which
# needs to be manually stopped so Swarming can tidy up after itself.
self.m.step('taskkill mspdbsrv',
['taskkill.exe', '/f', '/t', '/im', 'mspdbsrv.exe'])
else:
yield
def _ensure_sdk(self, sdk_dir, sdk_version):
"""Ensures the Windows SDK CIPD package is installed.
Returns the directory where the SDK package has been installed.
Args:
path (path): Path to a directory.
version (str): CIPD instance ID, tag or ref.
"""
with self.m.context(infra_steps=True):
pkgs = self.m.cipd.EnsureFile()
pkgs.add_package('chrome_internal/third_party/sdk/windows', sdk_version)
self.m.cipd.ensure(sdk_dir, pkgs)
return sdk_dir
def _sdk_env(self, sdk_dir):
"""Constructs the environment for the SDK.
Returns environment and environment prefixes.
Args:
sdk_dir (path): Path to a directory containing the SDK.
"""
env = {}
env_prefixes = {}
# Load .../win_sdk/bin/SetEnv.${arch}.json to extract the required
# environment. It contains a dict that looks like this:
# {
# "env": {
# "VAR": [["..", "..", "x"], ["..", "..", "y"]],
# ...
# }
# }
# All these environment variables need to be added to the environment
# for the compiler and linker to work.
filename = 'SetEnv.%s.json' % {32: 'x86', 64: 'x64'}[self.m.platform.bits]
step_result = self.m.json.read(
'read %s' % filename,
sdk_dir.join('win_sdk', 'bin', filename),
step_test_data=lambda: self.m.json.test_api.output({
'env': {
'PATH': [['..', '..', 'win_sdk', 'bin', 'x64']],
'VSINSTALLDIR': [['..', '..\\']],},}))
data = step_result.json.output.get('env')
for key in data:
# recipes' Path() does not like .., ., \, or /, so this is cumbersome.
# What we want to do is:
# [sdk_bin_dir.join(*e) for e in env[k]]
# Instead do that badly, and rely (but verify) on the fact that the paths
# are all specified relative to the root, but specified relative to
# win_sdk/bin (i.e. everything starts with "../../".)
results = []
for value in data[key]:
assert value[0] == '..' and (value[1] == '..' or value[1] == '..\\')
results.append('%s' % sdk_dir.join(*value[2:]))
# PATH is special-cased because we don't want to overwrite other things
# like C:\Windows\System32. Others are replacements because prepending
# doesn't necessarily makes sense, like VSINSTALLDIR.
if key.lower() == 'path':
env_prefixes[key] = results
else:
env[key] = ';'.join(results)
return {'env': env, 'env_prefixes': env_prefixes}
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