OLD | NEW |
(Empty) | |
| 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 "base/stl_util.h" |
| 15 #include "components/rappor/proto/rappor_metric.pb.h" |
| 16 #include "components/rappor/rappor_pref_names.h" |
| 17 |
| 18 namespace { |
| 19 |
| 20 // Seconds before the initial log is generated. |
| 21 const int kInitialLogIntervalSeconds = 15; |
| 22 // Interval between ongoing logs. |
| 23 const int kLogIntervalSeconds = 30 * 60; |
| 24 |
| 25 const char kServerUrl[] = "http://localhost:1234/rappor/v2"; |
| 26 const char kMimeType[] = "application/vnd.chrome.uma"; |
| 27 |
| 28 } // namespace |
| 29 |
| 30 namespace rappor { |
| 31 |
| 32 RapporService::RapporService() : uploader_(kServerUrl, kMimeType) {} |
| 33 |
| 34 RapporService::~RapporService() {} |
| 35 |
| 36 void RapporService::Start(PrefService* pref_service, |
| 37 net::URLRequestContextGetter* request_context) { |
| 38 GenerateRapporSecret(pref_service); |
| 39 uploader_.SetRequestContext(request_context); |
| 40 log_rotation_timer_.Start( |
| 41 FROM_HERE, |
| 42 base::TimeDelta::FromSeconds(kInitialLogIntervalSeconds), |
| 43 this, |
| 44 &RapporService::OnLogInterval); |
| 45 } |
| 46 |
| 47 void RapporService::OnLogInterval() { |
| 48 rappor_metrics_proto_.Clear(); |
| 49 LogRapporMetrics(); |
| 50 if (rappor_metrics_proto_.rappor_size() > 0) { |
| 51 std::string log_text; |
| 52 bool success = rappor_metrics_proto_.SerializeToString(&log_text); |
| 53 DCHECK(success); |
| 54 uploader_.QueueLog(log_text); |
| 55 } |
| 56 log_rotation_timer_.Start(FROM_HERE, |
| 57 base::TimeDelta::FromSeconds(kLogIntervalSeconds), |
| 58 this, |
| 59 &RapporService::OnLogInterval); |
| 60 } |
| 61 |
| 62 // static |
| 63 void RapporService::RegisterPrefs(PrefRegistrySimple* registry) { |
| 64 registry->RegisterStringPref(prefs::kRapporSecret, std::string()); |
| 65 } |
| 66 |
| 67 void RapporService::GenerateRapporSecret(PrefService* pref_service) { |
| 68 if (!rappor_secret_.empty()) |
| 69 return; |
| 70 std::string rappor_secret_64 = pref_service->GetString(prefs::kRapporSecret); |
| 71 if (!rappor_secret_64.empty()) { |
| 72 bool decoded = base::Base64Decode(rappor_secret_64, &rappor_secret_); |
| 73 if (decoded) |
| 74 return; |
| 75 } |
| 76 |
| 77 rappor_secret_ = base::RandBytesAsString(128); |
| 78 bool encoded = base::Base64Encode(rappor_secret_, &rappor_secret_64); |
| 79 DCHECK(encoded); |
| 80 pref_service->SetString(prefs::kRapporSecret, rappor_secret_64); |
| 81 } |
| 82 |
| 83 void RapporService::LogRappor(const RapporMetric& rappor) { |
| 84 RapporMetricsProto::RapporMetric* metric = rappor_metrics_proto_.add_rappor(); |
| 85 metric->set_name_hash(base::Hash(rappor.parameters()->rappor_name)); |
| 86 ByteVector bytes = rappor.GetReport(rappor_secret_); |
| 87 std::string byte_string(bytes.begin(), bytes.end()); |
| 88 metric->set_bits(byte_string); |
| 89 } |
| 90 |
| 91 void RapporService::LogRapporMetrics() { |
| 92 base::AutoLock auto_lock(lock_); |
| 93 |
| 94 for (RapporMap::iterator it = rappors_.begin(); rappors_.end() != it; ++it) { |
| 95 const RapporMetric* rappor = it->second; |
| 96 DCHECK_EQ(it->first, rappor->parameters()->rappor_name); |
| 97 LogRappor(*rappor); |
| 98 } |
| 99 STLDeleteContainerPairSecondPointers(rappors_.begin(), rappors_.end()); |
| 100 rappors_.clear(); |
| 101 } |
| 102 |
| 103 void RapporService::RecordSamples(const RapporParameters& parameters, |
| 104 const std::vector<std::string>& samples) { |
| 105 base::AutoLock auto_lock(lock_); |
| 106 |
| 107 RapporMetric* rappor = GetRapporMetric(parameters); |
| 108 rappor->AddSamples(samples); |
| 109 } |
| 110 |
| 111 RapporMetric* RapporService::GetRapporMetric( |
| 112 const RapporParameters& parameters) { |
| 113 RapporMap::iterator it = rappors_.find(parameters.rappor_name); |
| 114 if (rappors_.end() != it) { |
| 115 RapporMetric* rappor = it->second; |
| 116 DCHECK_EQ(parameters.rappor_name, rappor->parameters()->rappor_name); |
| 117 DCHECK_EQ(parameters.bloom_filter_size_bytes, |
| 118 rappor->parameters()->bloom_filter_size_bytes); |
| 119 DCHECK_EQ(parameters.bloom_filter_hash_count, |
| 120 rappor->parameters()->bloom_filter_hash_count); |
| 121 DCHECK_EQ(parameters.fake_prob, rappor->parameters()->fake_prob); |
| 122 DCHECK_EQ(parameters.fake_one_prob, rappor->parameters()->fake_one_prob); |
| 123 DCHECK_EQ(parameters.one_coin_prob, rappor->parameters()->one_coin_prob); |
| 124 DCHECK_EQ(parameters.zero_coin_prob, rappor->parameters()->zero_coin_prob); |
| 125 return rappor; |
| 126 } |
| 127 |
| 128 RapporMetric* new_rappor = new RapporMetric(parameters); |
| 129 rappors_[parameters.rappor_name] = new_rappor; |
| 130 return new_rappor; |
| 131 } |
| 132 |
| 133 } // namespace rappor |
OLD | NEW |