| /* |
| * 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 ORING_DURATION_TRACKER_H |
| #define ORING_DURATION_TRACKER_H |
| |
| #include "DurationTracker.h" |
| |
| #include <set> |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| // Tracks the "Or'd" duration -- if 2 durations are overlapping, they won't be double counted. |
| class OringDurationTracker : public DurationTracker { |
| public: |
| OringDurationTracker(const ConfigKey& key, const int64_t& id, |
| const MetricDimensionKey& eventKey, sp<ConditionWizard> wizard, |
| int conditionIndex, const std::vector<Matcher>& dimensionInCondition, |
| bool nesting, int64_t currentBucketStartNs, int64_t currentBucketNum, |
| int64_t startTimeNs, int64_t bucketSizeNs, bool conditionSliced, |
| bool fullLink, |
| const std::vector<sp<DurationAnomalyTracker>>& anomalyTrackers); |
| |
| OringDurationTracker(const OringDurationTracker& tracker) = default; |
| |
| unique_ptr<DurationTracker> clone(const int64_t eventTime) override; |
| |
| void noteStart(const HashableDimensionKey& key, bool condition, const int64_t eventTime, |
| const ConditionKey& conditionKey) override; |
| void noteStop(const HashableDimensionKey& key, const int64_t eventTime, |
| const bool stopAll) override; |
| void noteStopAll(const int64_t eventTime) override; |
| |
| void onSlicedConditionMayChange(bool overallCondition, const int64_t timestamp) override; |
| void onConditionChanged(bool condition, const int64_t timestamp) override; |
| |
| bool flushCurrentBucket( |
| const int64_t& eventTimeNs, |
| std::unordered_map<MetricDimensionKey, std::vector<DurationBucket>>* output) override; |
| bool flushIfNeeded( |
| int64_t timestampNs, |
| std::unordered_map<MetricDimensionKey, std::vector<DurationBucket>>* output) override; |
| |
| int64_t predictAnomalyTimestampNs(const DurationAnomalyTracker& anomalyTracker, |
| const int64_t currentTimestamp) const override; |
| void dumpStates(FILE* out, bool verbose) const override; |
| |
| private: |
| // We don't need to keep track of individual durations. The information that's needed is: |
| // 1) which keys are started. We record the first start time. |
| // 2) which keys are paused (started but condition was false) |
| // 3) whenever a key stops, we remove it from the started set. And if the set becomes empty, |
| // it means everything has stopped, we then record the end time. |
| std::unordered_map<HashableDimensionKey, int> mStarted; |
| std::unordered_map<HashableDimensionKey, int> mPaused; |
| int64_t mLastStartTime; |
| std::unordered_map<HashableDimensionKey, ConditionKey> mConditionKeyMap; |
| |
| // return true if we should not allow newKey to be tracked because we are above the threshold |
| bool hitGuardRail(const HashableDimensionKey& newKey); |
| |
| FRIEND_TEST(OringDurationTrackerTest, TestDurationOverlap); |
| FRIEND_TEST(OringDurationTrackerTest, TestCrossBucketBoundary); |
| FRIEND_TEST(OringDurationTrackerTest, TestDurationConditionChange); |
| FRIEND_TEST(OringDurationTrackerTest, TestPredictAnomalyTimestamp); |
| FRIEND_TEST(OringDurationTrackerTest, TestAnomalyDetectionExpiredAlarm); |
| FRIEND_TEST(OringDurationTrackerTest, TestAnomalyDetectionFiredAlarm); |
| }; |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |
| |
| #endif // ORING_DURATION_TRACKER_H |