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Side by Side Diff: tools/profile_chrome/trace_packager.py

Issue 1738563002: Remove //tools/profile_chrome from Chromium repo (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 9 months ago
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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 codecs
6 import gzip
7 import json
8 import os
9 import shutil
10 import sys
11 import zipfile
12
13 from profile_chrome import util
14
15 _SRC_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..'))
16 sys.path.append(os.path.join(_SRC_DIR, 'third_party', 'catapult', 'tracing'))
17 # pylint: disable=F0401
18 from tracing_build import trace2html
19
20
21 def _PackageTracesAsHtml(trace_files, html_file):
22 with codecs.open(html_file, mode='w', encoding='utf-8') as f:
23 trace2html.WriteHTMLForTracesToFile(trace_files, f)
24 for trace_file in trace_files:
25 os.unlink(trace_file)
26
27
28 def _CompressFile(host_file, output):
29 with gzip.open(output, 'wb') as out, \
30 open(host_file, 'rb') as input_file:
31 out.write(input_file.read())
32 os.unlink(host_file)
33
34
35 def _ArchiveFiles(host_files, output):
36 with zipfile.ZipFile(output, 'w', zipfile.ZIP_DEFLATED) as z:
37 for host_file in host_files:
38 z.write(host_file)
39 os.unlink(host_file)
40
41
42 def _MergeTracesIfNeeded(trace_files):
43 if len(trace_files) <= 1:
44 return trace_files
45 merge_candidates = []
46 for trace_file in trace_files:
47 with open(trace_file) as f:
48 # Try to detect a JSON file cheaply since that's all we can merge.
49 if f.read(1) != '{':
50 continue
51 f.seek(0)
52 try:
53 json_data = json.load(f)
54 except ValueError:
55 continue
56 merge_candidates.append((trace_file, json_data))
57 if len(merge_candidates) <= 1:
58 return trace_files
59
60 other_files = [f for f in trace_files
61 if not f in [c[0] for c in merge_candidates]]
62 merged_file, merged_data = merge_candidates[0]
63 for trace_file, json_data in merge_candidates[1:]:
64 for key, value in json_data.items():
65 if not merged_data.get(key) or json_data[key]:
66 merged_data[key] = value
67 os.unlink(trace_file)
68
69 with open(merged_file, 'w') as f:
70 json.dump(merged_data, f)
71 return [merged_file] + other_files
72
73
74 def PackageTraces(trace_files, output=None, compress=False, write_json=False):
75 trace_files = _MergeTracesIfNeeded(trace_files)
76 if not write_json:
77 html_file = os.path.splitext(trace_files[0])[0] + '.html'
78 _PackageTracesAsHtml(trace_files, html_file)
79 trace_files = [html_file]
80
81 if compress and len(trace_files) == 1:
82 result = output or trace_files[0] + '.gz'
83 _CompressFile(trace_files[0], result)
84 elif len(trace_files) > 1:
85 result = output or 'chrome-combined-trace-%s.zip' % util.GetTraceTimestamp()
86 _ArchiveFiles(trace_files, result)
87 elif output:
88 result = output
89 shutil.move(trace_files[0], result)
90 else:
91 result = trace_files[0]
92 return result
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