1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
#!/usr/bin/env python
# Copyright (c) 2012 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.
"""Does one of the following depending on the --mode argument:
check verify all the inputs exist, touches the file specified with
--result and exits.
run recreates a tree with all the inputs files and run the executable
in it.
remap stores all the inputs files in a directory without running the
executable.
"""
import logging
import optparse
import os
import re
import shutil
import subprocess
import sys
import tempfile
import time
import tree_creator
def touch(filename):
"""Implements the equivalent of the 'touch' command."""
if not os.path.exists(filename):
open(filename, 'a').close()
os.utime(filename, None)
def rmtree(root):
"""Wrapper around shutil.rmtree() to retry automatically on Windows."""
if sys.platform == 'win32':
for i in range(3):
try:
shutil.rmtree(root)
break
except WindowsError: # pylint: disable=E0602
delay = (i+1)*2
print >> sys.stderr, (
'The test has subprocess outliving it. Sleep %d seconds.' % delay)
time.sleep(delay)
else:
shutil.rmtree(root)
def isolate(outdir, root, resultfile, mode, read_only, args):
"""Main function to isolate a target with its dependencies."""
cmd = []
if '--' in args:
# Strip off the command line from the inputs.
i = args.index('--')
cmd = args[i+1:]
args = args[:i]
# gyp provides paths relative to cwd. Convert them to be relative to
# root.
cwd = os.getcwd()
def make_relpath(i):
"""Makes an input file a relative path but keeps any trailing slash."""
out = os.path.relpath(os.path.join(cwd, i), root)
if i.endswith('/'):
out += '/'
return out
infiles = [make_relpath(i) for i in args]
if not infiles:
raise ValueError('Need at least one input file to map')
# Other modes ignore the command.
if mode == 'run' and not cmd:
print >> sys.stderr, 'Using first input %s as executable' % infiles[0]
cmd = [infiles[0]]
tempdir = None
try:
if not outdir and mode != 'check':
tempdir = tempfile.mkdtemp(prefix='isolate')
outdir = tempdir
elif outdir:
outdir = os.path.abspath(outdir)
tree_creator.recreate_tree(
outdir,
os.path.abspath(root),
infiles,
tree_creator.DRY_RUN if mode == 'check' else tree_creator.HARDLINK,
lambda x: re.match(r'.*\.(svn|pyc)$', x))
if mode != 'check' and read_only:
tree_creator.make_writable(outdir, True)
if mode in ('check', 'remap'):
result = 0
else:
# TODO(maruel): Remove me. Layering violation. Used by
# base/base_paths_linux.cc
env = os.environ.copy()
env['CR_SOURCE_ROOT'] = outdir.encode()
# Rebase the command to the right path.
cmd[0] = os.path.join(outdir, cmd[0])
logging.info('Running %s' % cmd)
result = subprocess.call(cmd, cwd=outdir, env=env)
if not result and resultfile:
# Signal the build tool that the test succeeded.
touch(resultfile)
return result
finally:
if tempdir and mode == 'isolate':
if read_only:
tree_creator.make_writable(tempdir, False)
rmtree(tempdir)
def main():
parser = optparse.OptionParser(
usage='%prog [options] [inputs] -- [command line]',
description=sys.modules[__name__].__doc__)
parser.allow_interspersed_args = False
parser.format_description = lambda *_: parser.description
parser.add_option(
'-v', '--verbose', action='count', default=0, help='Use multiple times')
parser.add_option(
'--mode', choices=['remap', 'check', 'run'],
help='Determines the action to be taken')
parser.add_option(
'--result', metavar='X',
help='File to be touched when the command succeeds')
parser.add_option('--root', help='Base directory to fetch files, required')
parser.add_option(
'--outdir', metavar='X',
help='Directory used to recreate the tree. Defaults to a /tmp '
'subdirectory')
parser.add_option(
'--read-only', action='store_true',
help='Make the temporary tree read-only')
options, args = parser.parse_args()
level = [logging.ERROR, logging.INFO, logging.DEBUG][min(2, options.verbose)]
logging.basicConfig(
level=level,
format='%(levelname)5s %(module)15s(%(lineno)3d): %(message)s')
if not options.root:
parser.error('--root is required.')
try:
return isolate(
options.outdir,
options.root,
options.result,
options.mode,
options.read_only,
args)
except ValueError, e:
parser.error(str(e))
if __name__ == '__main__':
sys.exit(main())
|
