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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 #include "components/rappor/rappor_service.h" | |
6 | |
7 #include <cstdlib> | |
Alexei Svitkine (slow)
2014/01/24 22:09:03
Why is this needed?
Steven Holte
2014/01/24 23:26:58
Removed
| |
8 | |
9 #include "base/base64.h" | |
10 #include "base/hash.h" | |
11 #include "base/metrics/field_trial.h" | |
12 #include "base/prefs/pref_registry_simple.h" | |
13 #include "base/prefs/pref_service.h" | |
14 #include "base/rand_util.h" | |
15 #include "base/stl_util.h" | |
16 #include "components/rappor/proto/rappor_metric.pb.h" | |
17 #include "components/rappor/rappor_pref_names.h" | |
18 #include "components/variations/variations_associated_data.h" | |
19 #include "url/gurl.h" | |
20 | |
21 namespace { | |
22 | |
23 // Seconds before the initial log is generated. | |
24 const int kInitialLogIntervalSeconds = 15; | |
25 // Interval between ongoing logs. | |
26 const int kLogIntervalSeconds = 30 * 60; | |
27 | |
28 const char kMimeType[] = "application/vnd.chrome.rappor"; | |
29 | |
30 // Constants for the RAPPOR rollout field trial. | |
31 const char kRapporRolloutFieldTrialName[] = "RapporRollout"; | |
32 | |
33 // Constant for the finch parameter name for the server URL | |
34 const char kRapporRolloutServerUrlParam[] = "ServerUrl"; | |
35 | |
36 GURL GetServerUrl() { | |
37 return GURL(chrome_variations::GetVariationParamValue( | |
38 kRapporRolloutFieldTrialName, | |
39 kRapporRolloutServerUrlParam)); | |
40 } | |
41 | |
42 } // namespace | |
43 | |
44 namespace rappor { | |
45 | |
46 RapporService::RapporService() {} | |
47 | |
48 RapporService::~RapporService() {} | |
49 | |
50 void RapporService::Start(PrefService* pref_service, | |
51 net::URLRequestContextGetter* request_context) { | |
52 GURL server_url = GetServerUrl(); | |
53 if (!server_url.is_valid()) | |
54 return; | |
55 DCHECK(!uploader_); | |
56 GetSecret(pref_service); | |
57 uploader_.reset(new LogUploader(server_url, kMimeType, request_context)); | |
58 log_rotation_timer_.Start( | |
59 FROM_HERE, | |
60 base::TimeDelta::FromSeconds(kInitialLogIntervalSeconds), | |
61 this, | |
62 &RapporService::OnLogInterval); | |
63 } | |
64 | |
65 void RapporService::OnLogInterval() { | |
66 DCHECK(uploader_); | |
67 RapporReports reports; | |
68 LogMetrics(&reports); | |
69 if (reports.report_size() > 0) { | |
70 std::string log_text; | |
71 bool success = reports.SerializeToString(&log_text); | |
72 DCHECK(success); | |
73 uploader_->QueueLog(log_text); | |
74 } | |
75 log_rotation_timer_.Start(FROM_HERE, | |
76 base::TimeDelta::FromSeconds(kLogIntervalSeconds), | |
77 this, | |
78 &RapporService::OnLogInterval); | |
79 } | |
80 | |
81 // static | |
82 void RapporService::RegisterPrefs(PrefRegistrySimple* registry) { | |
83 registry->RegisterStringPref(prefs::kRapporSecret, std::string()); | |
84 } | |
85 | |
86 void RapporService::GetSecret(PrefService* pref_service) { | |
87 if (!secret_.empty()) | |
88 return; | |
89 std::string secret_base64 = | |
90 pref_service->GetString(prefs::kRapporSecret); | |
91 if (!secret_base64.empty()) { | |
92 bool decoded = base::Base64Decode(secret_base64, &secret_); | |
93 if (decoded) | |
94 return; | |
95 // If the preference fails to decode, it must be corrupt, so continue as | |
96 // though it didn't exist yet and generate a new one. | |
97 } | |
98 | |
99 secret_ = base::RandBytesAsString(128); | |
100 base::Base64Encode(secret_, &secret_base64); | |
101 pref_service->SetString(prefs::kRapporSecret, secret_base64); | |
102 } | |
103 | |
104 void RapporService::LogMetric(const RapporMetric& metric, | |
105 RapporReports::Report* report) { | |
106 report->set_name_hash(base::Hash(metric.parameters()->rappor_name)); | |
Alexei Svitkine (slow)
2014/01/24 22:09:03
I wouldn't use base::Hash() here - I think that on
Steven Holte
2014/01/24 23:26:58
Good catch! I thought I'd already had this set to
| |
107 ByteVector bytes = metric.GetReport(secret_); | |
108 std::string byte_string(bytes.begin(), bytes.end()); | |
109 report->set_bits(byte_string); | |
110 } | |
111 | |
112 void RapporService::LogMetrics(RapporReports* reports) { | |
113 base::AutoLock auto_lock(lock_); | |
114 | |
115 for (std::map<std::string, RapporMetric*>::iterator it = metrics_map_.begin(); | |
116 metrics_map_.end() != it; | |
117 ++it) { | |
118 const RapporMetric* metric = it->second; | |
119 DCHECK_EQ(it->first, metric->parameters()->rappor_name); | |
120 RapporReports::Report* report = reports->add_report(); | |
121 LogMetric(*metric, report); | |
122 } | |
123 STLDeleteContainerPairSecondPointers( | |
124 metrics_map_.begin(), metrics_map_.end()); | |
125 metrics_map_.clear(); | |
126 } | |
127 | |
128 void RapporService::RecordSamples(const RapporParameters& parameters, | |
129 const std::vector<std::string>& samples) { | |
130 if (!GetServerUrl().is_valid()) | |
131 return; | |
132 RecordSamplesInternal(parameters, samples); | |
133 } | |
134 | |
135 void RapporService::RecordUrl(const RapporParameters& parameters, | |
136 const GURL& url) { | |
137 if (!GetServerUrl().is_valid()) | |
138 return; | |
139 std::vector<std::string> samples; | |
140 samples.push_back(url.spec()); | |
141 samples.push_back(url.host()); | |
142 // TODO(holte): break up host more | |
143 samples.push_back(url.query()); | |
144 samples.push_back(url.path()); | |
145 RecordSamplesInternal(parameters, samples); | |
146 } | |
147 | |
148 void RapporService::RecordSamplesInternal( | |
149 const RapporParameters& parameters, | |
150 const std::vector<std::string>& samples) { | |
151 base::AutoLock auto_lock(lock_); | |
152 | |
153 RapporMetric* metric = LookupMetric(parameters); | |
154 metric->AddSamples(samples); | |
155 } | |
156 | |
157 RapporMetric* RapporService::LookupMetric( | |
158 const RapporParameters& parameters) { | |
159 std::map<std::string, RapporMetric*>::iterator it = | |
160 metrics_map_.find(parameters.rappor_name); | |
161 if (metrics_map_.end() != it) { | |
162 RapporMetric* metric = it->second; | |
163 DCHECK_EQ(parameters.ToString(), metric->parameters()->ToString()); | |
164 return metric; | |
165 } | |
166 | |
167 RapporMetric* new_metric = new RapporMetric(parameters); | |
168 metrics_map_[parameters.rappor_name] = new_metric; | |
169 return new_metric; | |
170 } | |
171 | |
172 } // namespace rappor | |
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