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Side by Side Diff: build/find_isolated_tests.py

Issue 2101243005: Add a snapshot of flutter/engine/src/build to our sdk (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: add README.dart Created 4 years, 5 months ago
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1 #!/usr/bin/env python
2 # Copyright 2014 The Chromium Authors. All rights reserved.
3 # Use of this source code is governed by a BSD-style license that can be
4 # found in the LICENSE file.
5
6 """Scans build output directory for .isolated files, calculates their SHA1
7 hashes, stores final list in JSON document and then removes *.isolated files
8 found (to ensure no stale *.isolated stay around on the next build).
9
10 Used to figure out what tests were build in isolated mode to trigger these
11 tests to run on swarming.
12
13 For more info see:
14 https://sites.google.com/a/chromium.org/dev/developers/testing/isolated-testing
15 """
16
17 import glob
18 import hashlib
19 import json
20 import optparse
21 import os
22 import re
23 import sys
24
25
26 def hash_file(filepath):
27 """Calculates the hash of a file without reading it all in memory at once."""
28 digest = hashlib.sha1()
29 with open(filepath, 'rb') as f:
30 while True:
31 chunk = f.read(1024*1024)
32 if not chunk:
33 break
34 digest.update(chunk)
35 return digest.hexdigest()
36
37
38 def main():
39 parser = optparse.OptionParser(
40 usage='%prog --build-dir <path> --output-json <path>',
41 description=sys.modules[__name__].__doc__)
42 parser.add_option(
43 '--build-dir',
44 help='Path to a directory to search for *.isolated files.')
45 parser.add_option(
46 '--output-json',
47 help='File to dump JSON results into.')
48
49 options, _ = parser.parse_args()
50 if not options.build_dir:
51 parser.error('--build-dir option is required')
52 if not options.output_json:
53 parser.error('--output-json option is required')
54
55 result = {}
56
57 # Get the file hash values and output the pair.
58 pattern = os.path.join(options.build_dir, '*.isolated')
59 for filepath in sorted(glob.glob(pattern)):
60 test_name = os.path.splitext(os.path.basename(filepath))[0]
61 if re.match(r'^.+?\.\d$', test_name):
62 # It's a split .isolated file, e.g. foo.0.isolated. Ignore these.
63 continue
64
65 # TODO(csharp): Remove deletion once the isolate tracked dependencies are
66 # inputs for the isolated files.
67 sha1_hash = hash_file(filepath)
68 os.remove(filepath)
69 result[test_name] = sha1_hash
70
71 with open(options.output_json, 'wb') as f:
72 json.dump(result, f)
73
74 return 0
75
76
77 if __name__ == '__main__':
78 sys.exit(main())
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