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/*
* 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"
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, 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;
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;
void onStateChanged(const int64_t timestamp, const int32_t atomId,
const FieldValue& newState) 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;
int64_t getCurrentStateKeyDuration() const override;
int64_t getCurrentStateKeyFullBucketDuration() const override;
void updateCurrentStateKey(const int32_t atomId, const FieldValue& newState);
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
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