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1 // Copyright (c) 2013 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/rappor/rappor_service.h" | |
6 | |
7 #include <cstdlib> | |
8 | |
9 #include "base/base64.h" | |
10 #include "base/hash.h" | |
11 #include "base/prefs/pref_registry_simple.h" | |
12 #include "base/prefs/pref_service.h" | |
13 #include "base/rand_util.h" | |
14 #include "components/rappor/proto/rappor_metric.pb.h" | |
15 #include "components/rappor/rappor.h" | |
16 #include "components/rappor/rappor_pref_names.h" | |
17 #include "components/rappor/rappor_recorder.h" | |
18 #include "components/rappor/rappor_reporter.h" | |
19 | |
20 using base::TimeDelta; | |
Alexei Svitkine (slow)
2013/12/11 15:27:05
Nit: Remove this and just use the base:: prefix in
Steven Holte
2013/12/11 20:31:26
Done.
| |
21 | |
22 namespace { | |
23 | |
24 // Seconds before the initial log is generated. | |
25 const int kInitialLogIntervalSeconds = 15; | |
26 // Interval between ongoing logs. | |
27 const int kLogIntervalSeconds = 30 * 60; | |
28 | |
29 const char kServerUrl[] = "http://localhost:1234/rappor/v2"; | |
30 const char kMimeType[] = "application/vnd.chrome.uma"; | |
31 | |
32 } // namespace | |
33 | |
34 namespace rappor { | |
35 | |
36 // TODO(holte): Get rid of global | |
37 base::LazyInstance<RapporService>::Leaky g_rappor_service = | |
38 LAZY_INSTANCE_INITIALIZER; | |
39 | |
40 RapporService::RapporService() : uploader_(kServerUrl, kMimeType) { | |
41 } | |
42 | |
43 RapporService::~RapporService() {} | |
44 | |
45 void RapporService::Start(PrefService* pref_service, | |
46 net::URLRequestContextGetter* request_context) { | |
47 GenerateRapporSecret(pref_service); | |
48 uploader_.SetRequestContext(request_context); | |
49 log_rotation_timer_.Start(FROM_HERE, | |
50 TimeDelta::FromSeconds(kInitialLogIntervalSeconds), | |
51 this, &RapporService::OnLogInterval); | |
52 } | |
53 | |
54 void RapporService::OnLogInterval() { | |
55 rappor_metrics_proto_.Clear(); | |
56 RecordRapporMetrics(); | |
57 if (rappor_metrics_proto_.rappor_size() > 0) { | |
58 std::string log_text; | |
59 rappor_metrics_proto_.SerializeToString(&log_text); | |
60 uploader_.QueueLog(log_text); | |
61 } | |
62 log_rotation_timer_.Start(FROM_HERE, | |
63 TimeDelta::FromSeconds(kLogIntervalSeconds), | |
64 this, &RapporService::OnLogInterval); | |
65 } | |
66 | |
67 // static | |
68 void RapporService::RegisterPrefs(PrefRegistrySimple* registry) { | |
69 registry->RegisterStringPref(prefs::kRapporSecret, std::string()); | |
70 } | |
71 | |
72 void RapporService::GenerateRapporSecret(PrefService* pref_service) { | |
73 if (!rappor_secret_.empty()) | |
74 return; | |
75 std::string rappor_secret_64 = pref_service->GetString(prefs::kRapporSecret); | |
76 if (!rappor_secret_64.empty()) { | |
77 bool decoded = base::Base64Decode(rappor_secret_64, &rappor_secret_); | |
78 if (decoded) { | |
79 return; | |
80 } | |
81 } | |
82 | |
83 rappor_secret_ = base::RandBytesAsString(128); | |
84 bool encoded = base::Base64Encode(rappor_secret_, &rappor_secret_64); | |
85 DCHECK(encoded); | |
86 pref_service->SetString(prefs::kRapporSecret, rappor_secret_64); | |
87 } | |
88 | |
89 void RapporService::RecordRapporMetric(const std::string& metric_name, | |
90 const std::vector<uint8_t> bytes) { | |
91 RapporMetricsProto::RapporMetricProto* metric = | |
92 rappor_metrics_proto_.add_rappor(); | |
93 metric->set_name_hash(base::Hash(metric_name)); | |
94 std::string byte_string(bytes.begin(), bytes.end()); | |
95 metric->set_bits(byte_string); | |
96 } | |
97 | |
98 void RapporService::RecordRapporMetrics() { | |
99 RapporReporter rappor_reporter(rappor_secret_); | |
100 | |
101 RapporRecorder::Rappors rappors; | |
102 g_rappor_recorder.Get().GetRappors(&rappors); | |
103 for (RapporRecorder::Rappors::const_iterator it = rappors.begin(); | |
104 rappors.end() != it; | |
105 ++it) { | |
106 const Rappor& rappor = **it; | |
107 std::vector<uint8_t> bytes = rappor_reporter.GetReport(rappor); | |
108 RecordRapporMetric(rappor.rappor_name(), bytes); | |
109 } | |
110 g_rappor_recorder.Get().ClearRappors(); | |
111 } | |
112 | |
113 } // namespace rappor | |
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