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1 // Copyright 2017 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 #include "components/download/internal/config.h" | |
6 | |
7 #include <string> | |
8 | |
9 #include "base/metrics/field_trial_params.h" | |
10 #include "base/strings/string_number_conversions.h" | |
11 #include "components/download/public/features.h" | |
12 | |
13 namespace download { | |
14 | |
15 namespace { | |
16 | |
17 // Default value for max concurrent downloads configuration. | |
18 const int kDefaultMaxConcurrentDownloads = 4; | |
19 | |
20 // Default value for maximum running downloads of the download service. | |
21 const int kDefaultMaxRunningDownloads = 1; | |
22 | |
23 // Default value for maximum scheduled downloads. | |
24 const int kDefaultMaxScheduledDownloads = 15; | |
25 | |
26 // Default value for maximum retry count. | |
27 const int kDefaultMaxRetryCount = 5; | |
28 | |
29 // Default value for file keep alive time in minutes, keep the file alive for | |
30 // 12 hours by default. | |
31 const int kDefaultFileKeepAliveTimeMinutes = 12 * 60; | |
32 | |
33 // Helper routine to get Finch experiment parameter. If no Finch seed was found, | |
34 // use the |default_value|. The |name| should match an experiment | |
35 // parameter in Finch server configuration. | |
36 int GetFinchConfigInt(const std::string& name, int default_value) { | |
37 std::string finch_value = | |
38 base::GetFieldTrialParamValueByFeature(kDownloadServiceFeature, name); | |
39 int result; | |
40 return base::StringToInt(finch_value, &result) ? result : default_value; | |
41 } | |
42 | |
43 // Helper routine to load Finch configurations. | |
44 void LoadFinchConfigs(Configuration* config) { | |
David Trainor- moved to gerrit
2017/05/05 20:10:52
Can we do something like make this static and make
xingliu
2017/05/05 22:55:03
Done.
| |
45 config->max_concurrent_downloads = GetFinchConfigInt( | |
46 kMaxConcurrentDownloadsConfig, kDefaultMaxConcurrentDownloads); | |
47 config->max_running_downloads = GetFinchConfigInt( | |
48 kMaxRunningDownloadsConfig, kDefaultMaxRunningDownloads); | |
49 config->max_scheduled_downloads = GetFinchConfigInt( | |
50 kMaxScheduledDownloadsConfig, kDefaultMaxScheduledDownloads); | |
51 config->max_retry_count = | |
52 GetFinchConfigInt(kMaxRetryCountConfig, kDefaultMaxRetryCount); | |
53 config->file_keep_alive_time = base::TimeDelta::FromMinutes(GetFinchConfigInt( | |
54 kFileKeepAliveTimeMinutesConfig, kDefaultFileKeepAliveTimeMinutes)); | |
55 } | |
56 | |
57 } // namespace | |
58 | |
59 Configuration::Configuration() { | |
60 LoadFinchConfigs(this); | |
61 } | |
62 | |
63 } // namespace download | |
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