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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 COMBINATION_CONDITION_TRACKER_H
#define COMBINATION_CONDITION_TRACKER_H
#include "ConditionTracker.h"
#include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
namespace android {
namespace os {
namespace statsd {
class CombinationConditionTracker : public virtual ConditionTracker {
public:
CombinationConditionTracker(const int64_t& id, const int index);
~CombinationConditionTracker();
bool init(const std::vector<Predicate>& allConditionConfig,
const std::vector<sp<ConditionTracker>>& allConditionTrackers,
const std::unordered_map<int64_t, int>& conditionIdIndexMap,
std::vector<bool>& stack) override;
void evaluateCondition(const LogEvent& event,
const std::vector<MatchingState>& eventMatcherValues,
const std::vector<sp<ConditionTracker>>& mAllConditions,
std::vector<ConditionState>& conditionCache,
std::vector<bool>& changedCache) override;
void isConditionMet(const ConditionKey& conditionParameters,
const std::vector<sp<ConditionTracker>>& allConditions,
const vector<Matcher>& dimensionFields,
const bool isSubOutputDimensionFields,
const bool isPartialLink,
std::vector<ConditionState>& conditionCache,
std::unordered_set<HashableDimensionKey>& dimensionsKeySet) const override;
ConditionState getMetConditionDimension(
const std::vector<sp<ConditionTracker>>& allConditions,
const vector<Matcher>& dimensionFields,
const bool isSubOutputDimensionFields,
std::unordered_set<HashableDimensionKey>& dimensionsKeySet) const override;
// Only one child predicate can have dimension.
const std::set<HashableDimensionKey>* getChangedToTrueDimensions(
const std::vector<sp<ConditionTracker>>& allConditions) const override {
for (const auto& child : mChildren) {
auto result = allConditions[child]->getChangedToTrueDimensions(allConditions);
if (result != nullptr) {
return result;
}
}
return nullptr;
}
// Only one child predicate can have dimension.
const std::set<HashableDimensionKey>* getChangedToFalseDimensions(
const std::vector<sp<ConditionTracker>>& allConditions) const override {
for (const auto& child : mChildren) {
auto result = allConditions[child]->getChangedToFalseDimensions(allConditions);
if (result != nullptr) {
return result;
}
}
return nullptr;
}
bool IsSimpleCondition() const override { return false; }
bool IsChangedDimensionTrackable() const override {
return mLogicalOperation == LogicalOperation::AND && mSlicedChildren.size() == 1;
}
bool equalOutputDimensions(
const std::vector<sp<ConditionTracker>>& allConditions,
const vector<Matcher>& dimensions) const override;
void getTrueSlicedDimensions(
const std::vector<sp<ConditionTracker>>& allConditions,
std::set<HashableDimensionKey>* dimensions) const override {
if (mSlicedChildren.size() == 1) {
return allConditions[mSlicedChildren.front()]->getTrueSlicedDimensions(
allConditions, dimensions);
}
}
private:
LogicalOperation mLogicalOperation;
// Store index of the children Predicates.
// We don't store string name of the Children, because we want to get rid of the hash map to
// map the name to object. We don't want to store smart pointers to children, because it
// increases the risk of circular dependency and memory leak.
std::vector<int> mChildren;
std::vector<int> mSlicedChildren;
std::vector<int> mUnSlicedChildren;
};
} // namespace statsd
} // namespace os
} // namespace android
#endif // COMBINATION_CONDITION_TRACKER_H
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