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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 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 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);
MaxDurationTracker(const MaxDurationTracker& 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;
bool flushIfNeeded(
int64_t timestampNs,
std::unordered_map<MetricDimensionKey, std::vector<DurationBucket>>* output) override;
bool flushCurrentBucket(
const int64_t& eventTimeNs,
std::unordered_map<MetricDimensionKey, std::vector<DurationBucket>>*) override;
void onSlicedConditionMayChange(bool overallCondition, const int64_t timestamp) override;
void onConditionChanged(bool condition, const int64_t timestamp) override;
int64_t predictAnomalyTimestampNs(const DurationAnomalyTracker& anomalyTracker,
const int64_t currentTimestamp) const override;
void dumpStates(FILE* out, bool verbose) const override;
private:
// Returns true if at least one of the mInfos is started.
bool anyStarted();
std::unordered_map<HashableDimensionKey, DurationInfo> mInfos;
void noteConditionChanged(const HashableDimensionKey& key, bool conditionMet,
const int64_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);
FRIEND_TEST(MaxDurationTrackerTest, TestAnomalyPredictedTimestamp);
};
} // namespace statsd
} // namespace os
} // namespace android
#endif // MAX_DURATION_TRACKER_H
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