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1 # Copyright 2015 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 subprocess | |
7 import sys | |
8 | |
9 def download_from_public_bucket(gs_path, output_path, depot_tools_path): | |
10 gsutil_exe = os.path.join(depot_tools_path, "third_party", "gsutil", "gsutil") | |
11 | |
12 # We're downloading from a public bucket which does not need authentication, | |
13 # but the user might have busted credential files somewhere such as ~/.boto | |
14 # that the gsutil script will try (and fail) to use. Setting these | |
15 # environment variables convinces gsutil not to attempt to use these, but | |
16 # also generates a useless warning about failing to load the file. We want | |
17 # to discard this warning but still preserve all output in the case of an | |
18 # actual failure. So, we run the script and capture all output and then | |
19 # throw the output away if the script succeeds (return code 0). | |
20 env = os.environ.copy() | |
21 env["AWS_CREDENTIAL_FILE"] = "" | |
22 env["BOTO_CONFIG"] = "" | |
23 try: | |
24 subprocess.check_output( | |
25 [gsutil_exe, | |
26 "--bypass_prodaccess", | |
27 "cp", | |
28 gs_path, | |
29 output_path], | |
30 stderr=subprocess.STDOUT, | |
31 env=env) | |
32 except subprocess.CalledProcessError as e: | |
33 print e.output | |
34 sys.exit(1) | |
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