| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef MAX_DURATION_TRACKER_H |
| #define MAX_DURATION_TRACKER_H |
| |
| #include "DurationTracker.h" |
| |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| // Tracks a pool of atom durations, and output the max duration for each bucket. |
| // To get max duration, we need to keep track of each individual durations, and compare them when |
| // they stop or bucket expires. |
| class MaxDurationTracker : public DurationTracker { |
| public: |
| MaxDurationTracker(const ConfigKey& key, const int64_t& id, |
| const MetricDimensionKey& eventKey, sp<ConditionWizard> wizard, |
| int conditionIndex, const FieldMatcher& dimensionInCondition, bool nesting, |
| uint64_t currentBucketStartNs, uint64_t bucketSizeNs, bool conditionSliced, |
| const std::vector<sp<DurationAnomalyTracker>>& anomalyTrackers); |
| |
| MaxDurationTracker(const MaxDurationTracker& tracker) = default; |
| |
| unique_ptr<DurationTracker> clone(const uint64_t eventTime) override; |
| |
| void noteStart(const HashableDimensionKey& key, bool condition, const uint64_t eventTime, |
| const ConditionKey& conditionKey) override; |
| void noteStop(const HashableDimensionKey& key, const uint64_t eventTime, |
| const bool stopAll) override; |
| void noteStopAll(const uint64_t eventTime) override; |
| |
| bool flushIfNeeded( |
| uint64_t timestampNs, |
| std::unordered_map<MetricDimensionKey, std::vector<DurationBucket>>* output) override; |
| |
| void onSlicedConditionMayChange(const uint64_t timestamp) override; |
| void onConditionChanged(bool condition, const uint64_t timestamp) override; |
| |
| int64_t predictAnomalyTimestampNs(const DurationAnomalyTracker& anomalyTracker, |
| const uint64_t currentTimestamp) const override; |
| void dumpStates(FILE* out, bool verbose) const override; |
| |
| private: |
| std::unordered_map<HashableDimensionKey, DurationInfo> mInfos; |
| |
| void noteConditionChanged(const HashableDimensionKey& key, bool conditionMet, |
| const uint64_t timestamp); |
| |
| // return true if we should not allow newKey to be tracked because we are above the threshold |
| bool hitGuardRail(const HashableDimensionKey& newKey); |
| |
| FRIEND_TEST(MaxDurationTrackerTest, TestSimpleMaxDuration); |
| FRIEND_TEST(MaxDurationTrackerTest, TestCrossBucketBoundary); |
| FRIEND_TEST(MaxDurationTrackerTest, TestMaxDurationWithCondition); |
| FRIEND_TEST(MaxDurationTrackerTest, TestStopAll); |
| FRIEND_TEST(MaxDurationTrackerTest, TestAnomalyDetection); |
| }; |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |
| |
| #endif // MAX_DURATION_TRACKER_H |