| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/prefs/tracked/tracked_preference_helper.h" |
| |
| #include "base/logging.h" |
| #include "base/metrics/histogram.h" |
| |
| TrackedPreferenceHelper::TrackedPreferenceHelper( |
| const std::string& pref_path, |
| size_t reporting_id, |
| size_t reporting_ids_count, |
| PrefHashFilter::EnforcementLevel enforcement_level) |
| : pref_path_(pref_path), |
| reporting_id_(reporting_id), reporting_ids_count_(reporting_ids_count), |
| enforce_(enforcement_level == PrefHashFilter::ENFORCE_ON_LOAD) { |
| } |
| |
| TrackedPreferenceHelper::ResetAction TrackedPreferenceHelper::GetAction( |
| PrefHashStoreTransaction::ValueState value_state) const { |
| switch (value_state) { |
| case PrefHashStoreTransaction::UNCHANGED: |
| // Desired case, nothing to do. |
| return DONT_RESET; |
| case PrefHashStoreTransaction::CLEARED: |
| // Unfortunate case, but there is nothing we can do. |
| return DONT_RESET; |
| case PrefHashStoreTransaction::TRUSTED_NULL_VALUE: // Falls through. |
| case PrefHashStoreTransaction::TRUSTED_UNKNOWN_VALUE: |
| // It is okay to seed the hash in this case. |
| return DONT_RESET; |
| case PrefHashStoreTransaction::SECURE_LEGACY: |
| // Accept secure legacy device ID based hashes. |
| return DONT_RESET; |
| case PrefHashStoreTransaction::UNTRUSTED_UNKNOWN_VALUE: // Falls through. |
| case PrefHashStoreTransaction::CHANGED: |
| return enforce_ ? DO_RESET : WANTED_RESET; |
| } |
| NOTREACHED() << "Unexpected PrefHashStoreTransaction::ValueState: " |
| << value_state; |
| return DONT_RESET; |
| } |
| |
| void TrackedPreferenceHelper::ReportValidationResult( |
| PrefHashStoreTransaction::ValueState value_state) const { |
| switch (value_state) { |
| case PrefHashStoreTransaction::UNCHANGED: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceUnchanged", |
| reporting_id_, reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::CLEARED: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceCleared", |
| reporting_id_, reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::SECURE_LEGACY: |
| UMA_HISTOGRAM_ENUMERATION( |
| "Settings.TrackedPreferenceMigratedLegacyDeviceId", reporting_id_, |
| reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::CHANGED: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceChanged", |
| reporting_id_, reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::UNTRUSTED_UNKNOWN_VALUE: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceInitialized", |
| reporting_id_, reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::TRUSTED_UNKNOWN_VALUE: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceTrustedInitialized", |
| reporting_id_, reporting_ids_count_); |
| return; |
| case PrefHashStoreTransaction::TRUSTED_NULL_VALUE: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceNullInitialized", |
| reporting_id_, reporting_ids_count_); |
| return; |
| } |
| NOTREACHED() << "Unexpected PrefHashStoreTransaction::ValueState: " |
| << value_state; |
| } |
| |
| void TrackedPreferenceHelper::ReportAction(ResetAction reset_action) const { |
| switch (reset_action) { |
| case DONT_RESET: |
| // No report for DONT_RESET. |
| break; |
| case WANTED_RESET: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceWantedReset", |
| reporting_id_, reporting_ids_count_); |
| break; |
| case DO_RESET: |
| UMA_HISTOGRAM_ENUMERATION("Settings.TrackedPreferenceReset", |
| reporting_id_, reporting_ids_count_); |
| break; |
| } |
| } |
| |
| void TrackedPreferenceHelper::ReportSplitPreferenceChangedCount( |
| size_t count) const { |
| // The histogram below is an expansion of the UMA_HISTOGRAM_COUNTS_100 macro |
| // adapted to allow for a dynamically suffixed histogram name. |
| // Note: The factory creates and owns the histogram. |
| base::HistogramBase* histogram = |
| base::LinearHistogram::FactoryGet( |
| "Settings.TrackedSplitPreferenceChanged." + pref_path_, |
| 1, |
| 100, // Allow counts up to 100. |
| 101, |
| base::HistogramBase::kUmaTargetedHistogramFlag); |
| histogram->Add(count); |
| } |