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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_pref_names.h" | |
16 | |
17 namespace { | |
18 | |
19 // Seconds before the initial log is generated. | |
20 const int kInitialLogIntervalSeconds = 15; | |
21 // Interval between ongoing logs. | |
22 const int kLogIntervalSeconds = 30 * 60; | |
23 | |
24 const char kServerUrl[] = "http://localhost:1234/rappor/v2"; | |
25 const char kMimeType[] = "application/vnd.chrome.uma"; | |
26 | |
27 } // namespace | |
28 | |
29 namespace rappor { | |
30 | |
31 RapporService::RapporService() : uploader_(kServerUrl, kMimeType) {} | |
32 | |
33 RapporService::~RapporService() {} | |
34 | |
35 void RapporService::Start(PrefService* pref_service, | |
36 net::URLRequestContextGetter* request_context) { | |
37 GenerateRapporSecret(pref_service); | |
38 uploader_.SetRequestContext(request_context); | |
39 log_rotation_timer_.Start( | |
40 FROM_HERE, | |
41 base::TimeDelta::FromSeconds(kInitialLogIntervalSeconds), | |
42 this, | |
43 &RapporService::OnLogInterval); | |
44 } | |
45 | |
46 void RapporService::OnLogInterval() { | |
47 rappor_metrics_proto_.Clear(); | |
48 LogRapporMetrics(); | |
49 if (rappor_metrics_proto_.rappor_size() > 0) { | |
50 std::string log_text; | |
51 bool success = rappor_metrics_proto_.SerializeToString(&log_text); | |
52 DCHECK(success); | |
53 uploader_.QueueLog(log_text); | |
54 } | |
55 log_rotation_timer_.Start(FROM_HERE, | |
56 base::TimeDelta::FromSeconds(kLogIntervalSeconds), | |
57 this, | |
58 &RapporService::OnLogInterval); | |
59 } | |
60 | |
61 // static | |
62 void RapporService::RegisterPrefs(PrefRegistrySimple* registry) { | |
63 registry->RegisterStringPref(prefs::kRapporSecret, std::string()); | |
64 } | |
65 | |
66 void RapporService::GenerateRapporSecret(PrefService* pref_service) { | |
67 if (!rappor_secret_.empty()) | |
68 return; | |
69 std::string rappor_secret_64 = pref_service->GetString(prefs::kRapporSecret); | |
70 if (!rappor_secret_64.empty()) { | |
71 bool decoded = base::Base64Decode(rappor_secret_64, &rappor_secret_); | |
72 if (decoded) | |
73 return; | |
74 } | |
75 | |
76 rappor_secret_ = base::RandBytesAsString(128); | |
77 bool encoded = base::Base64Encode(rappor_secret_, &rappor_secret_64); | |
78 DCHECK(encoded); | |
79 pref_service->SetString(prefs::kRapporSecret, rappor_secret_64); | |
80 } | |
81 | |
82 void RapporService::LogRappor(const RapporMetric& rappor) { | |
83 RapporMetricsProto::RapporMetric* metric = rappor_metrics_proto_.add_rappor(); | |
84 metric->set_name_hash(base::Hash(rappor.parameters()->rappor_name)); | |
85 ByteVector bytes = rappor.GetReport(rappor_secret_); | |
86 std::string byte_string(bytes.begin(), bytes.end()); | |
87 metric->set_bits(byte_string); | |
88 } | |
89 | |
90 void RapporService::LogRapporMetrics() { | |
91 base::AutoLock auto_lock(lock_); | |
92 | |
93 for (RapporMap::iterator it = rappors_.begin(); rappors_.end() != it; ++it) { | |
94 const RapporMetric* rappor = it->second; | |
95 DCHECK_EQ(it->first, rappor->parameters()->rappor_name); | |
96 LogRappor(*rappor); | |
97 delete rappor; | |
Alexei Svitkine (slow)
2013/12/24 16:59:30
Instead of deleting things manually, use STLDelete
Steven Holte
2014/01/04 00:12:54
Done.
| |
98 } | |
99 rappors_.clear(); | |
100 } | |
101 | |
102 void RapporService::RecordSamples(const RapporParameters* parameters, | |
103 const std::vector<std::string>& samples) { | |
104 base::AutoLock auto_lock(lock_); | |
105 | |
106 RapporMetric* rappor = GetRapporMetric(parameters); | |
107 rappor->AddSamples(samples); | |
108 } | |
109 | |
110 RapporMetric* RapporService::GetRapporMetric( | |
111 const RapporParameters* parameters) { | |
112 RapporMap::iterator it = rappors_.find(parameters->rappor_name); | |
113 if (rappors_.end() != it) { | |
114 RapporMetric* rappor = it->second; | |
115 DCHECK_EQ(parameters, rappor->parameters()); | |
116 return rappor; | |
117 } | |
118 | |
119 RapporMetric* new_rappor = new RapporMetric(parameters); | |
120 rappors_[parameters->rappor_name] = new_rappor; | |
121 return new_rappor; | |
122 } | |
123 | |
124 } // namespace rappor | |
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