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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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