cmds/statsd/src/metrics/DurationMetricProducer.cpp - platform/frameworks/base - Gitiles

 /*
  * 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.
  */

 #define DEBUG false

 #include "Log.h"
 #include "DurationMetricProducer.h"
 #include "guardrail/StatsdStats.h"
 #include "stats_util.h"
 #include "stats_log_util.h"

 #include <limits.h>
 #include <stdlib.h>

 using android::util::FIELD_COUNT_REPEATED;
 using android::util::FIELD_TYPE_BOOL;
 using android::util::FIELD_TYPE_FLOAT;
 using android::util::FIELD_TYPE_INT32;
 using android::util::FIELD_TYPE_INT64;
 using android::util::FIELD_TYPE_MESSAGE;
 using android::util::FIELD_TYPE_STRING;
 using android::util::ProtoOutputStream;
 using std::string;
 using std::unordered_map;
 using std::vector;

 namespace android {
 namespace os {
 namespace statsd {

 // for StatsLogReport
 const int FIELD_ID_NAME = 1;
 const int FIELD_ID_START_REPORT_NANOS = 2;
 const int FIELD_ID_END_REPORT_NANOS = 3;
 const int FIELD_ID_DURATION_METRICS = 6;
 // for DurationMetricDataWrapper
 const int FIELD_ID_DATA = 1;
 // for DurationMetricData
 const int FIELD_ID_DIMENSION = 1;
 const int FIELD_ID_BUCKET_INFO = 2;
 // for DurationBucketInfo
 const int FIELD_ID_START_BUCKET_NANOS = 1;
 const int FIELD_ID_END_BUCKET_NANOS = 2;
 const int FIELD_ID_DURATION = 3;

 DurationMetricProducer::DurationMetricProducer(const ConfigKey& key, const DurationMetric& metric,
                                                const int conditionIndex, const size_t startIndex,
                                                const size_t stopIndex, const size_t stopAllIndex,
                                                const bool nesting,
                                                const sp<ConditionWizard>& wizard,
                                                const FieldMatcher& internalDimensions,
                                                const uint64_t startTimeNs)
     : MetricProducer(metric.name(), key, startTimeNs, conditionIndex, wizard),
       mAggregationType(metric.aggregation_type()),
       mStartIndex(startIndex),
       mStopIndex(stopIndex),
       mStopAllIndex(stopAllIndex),
       mNested(nesting),
       mInternalDimensions(internalDimensions) {
     // TODO: The following boiler plate code appears in all MetricProducers, but we can't abstract
     // them in the base class, because the proto generated CountMetric, and DurationMetric are
     // not related. Maybe we should add a template in the future??
     if (metric.has_bucket() && metric.bucket().has_bucket_size_millis()) {
         mBucketSizeNs = metric.bucket().bucket_size_millis() * 1000000;
     } else {
         mBucketSizeNs = LLONG_MAX;
     }

     // TODO: use UidMap if uid->pkg_name is required
     mDimensions = metric.dimensions();

     if (metric.links().size() > 0) {
         mConditionLinks.insert(mConditionLinks.begin(), metric.links().begin(),
                                metric.links().end());
         mConditionSliced = true;
     }

     VLOG("metric %s created. bucket size %lld start_time: %lld", metric.name().c_str(),
          (long long)mBucketSizeNs, (long long)mStartTimeNs);
 }

 DurationMetricProducer::~DurationMetricProducer() {
     VLOG("~DurationMetric() called");
 }

 sp<AnomalyTracker> DurationMetricProducer::addAnomalyTracker(const Alert &alert) {
     std::lock_guard<std::mutex> lock(mMutex);
     if (alert.trigger_if_sum_gt() > alert.number_of_buckets() * mBucketSizeNs) {
         ALOGW("invalid alert: threshold (%lld) > possible recordable value (%d x %lld)",
               alert.trigger_if_sum_gt(), alert.number_of_buckets(),
               (long long)mBucketSizeNs);
         return nullptr;
     }
     sp<DurationAnomalyTracker> anomalyTracker = new DurationAnomalyTracker(alert, mConfigKey);
     if (anomalyTracker != nullptr) {
         mAnomalyTrackers.push_back(anomalyTracker);
     }
     return anomalyTracker;
 }

 unique_ptr<DurationTracker> DurationMetricProducer::createDurationTracker(
         const HashableDimensionKey& eventKey) const {
     switch (mAggregationType) {
         case DurationMetric_AggregationType_SUM:
             return make_unique<OringDurationTracker>(
                     mConfigKey, mName, eventKey, mWizard, mConditionTrackerIndex, mNested,
                     mCurrentBucketStartTimeNs, mBucketSizeNs, mAnomalyTrackers);
         case DurationMetric_AggregationType_MAX_SPARSE:
             return make_unique<MaxDurationTracker>(
                     mConfigKey, mName, eventKey, mWizard, mConditionTrackerIndex, mNested,
                     mCurrentBucketStartTimeNs, mBucketSizeNs, mAnomalyTrackers);
     }
 }

 void DurationMetricProducer::onSlicedConditionMayChangeLocked(const uint64_t eventTime) {
     VLOG("Metric %s onSlicedConditionMayChange", mName.c_str());
     flushIfNeededLocked(eventTime);
     // Now for each of the on-going event, check if the condition has changed for them.
     for (auto& pair : mCurrentSlicedDuration) {
         pair.second->onSlicedConditionMayChange(eventTime);
     }
 }

 void DurationMetricProducer::onConditionChangedLocked(const bool conditionMet,
                                                       const uint64_t eventTime) {
     VLOG("Metric %s onConditionChanged", mName.c_str());
     mCondition = conditionMet;
     flushIfNeededLocked(eventTime);
     // TODO: need to populate the condition change time from the event which triggers the condition
     // change, instead of using current time.
     for (auto& pair : mCurrentSlicedDuration) {
         pair.second->onConditionChanged(conditionMet, eventTime);
     }
 }

 void DurationMetricProducer::onDumpReportLocked(const uint64_t dumpTimeNs, StatsLogReport* report) {
     flushIfNeededLocked(dumpTimeNs);
     report->set_metric_name(mName);
     report->set_start_report_nanos(mStartTimeNs);

     auto duration_metrics = report->mutable_duration_metrics();
     for (const auto& pair : mPastBuckets) {
         DurationMetricData* metricData = duration_metrics->add_data();
         *metricData->mutable_dimension() = pair.first.getDimensionsValue();
         for (const auto& bucket : pair.second) {
             auto bucketInfo = metricData->add_bucket_info();
             bucketInfo->set_start_bucket_nanos(bucket.mBucketStartNs);
             bucketInfo->set_end_bucket_nanos(bucket.mBucketEndNs);
             bucketInfo->set_duration_nanos(bucket.mDuration);
         }
     }
 }

 void DurationMetricProducer::onDumpReportLocked(const uint64_t dumpTimeNs,
                                                 ProtoOutputStream* protoOutput) {
     flushIfNeededLocked(dumpTimeNs);

     protoOutput->write(FIELD_TYPE_STRING | FIELD_ID_NAME, mName);
     protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_START_REPORT_NANOS, (long long)mStartTimeNs);
     long long protoToken = protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_ID_DURATION_METRICS);

     VLOG("metric %s dump report now...", mName.c_str());

     for (const auto& pair : mPastBuckets) {
         const HashableDimensionKey& hashableKey = pair.first;
         VLOG("  dimension key %s", hashableKey.c_str());

         long long wrapperToken =
                 protoOutput->start(FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_DATA);

         // First fill dimension.
         long long dimensionToken = protoOutput->start(
                 FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_DIMENSION);
         writeDimensionsValueProtoToStream(hashableKey.getDimensionsValue(), protoOutput);
         protoOutput->end(dimensionToken);

         // Then fill bucket_info (DurationBucketInfo).
         for (const auto& bucket : pair.second) {
             long long bucketInfoToken = protoOutput->start(
                     FIELD_TYPE_MESSAGE | FIELD_COUNT_REPEATED | FIELD_ID_BUCKET_INFO);
             protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_START_BUCKET_NANOS,
                                (long long)bucket.mBucketStartNs);
             protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_END_BUCKET_NANOS,
                                (long long)bucket.mBucketEndNs);
             protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_DURATION, (long long)bucket.mDuration);
             protoOutput->end(bucketInfoToken);
             VLOG("\t bucket [%lld - %lld] duration: %lld", (long long)bucket.mBucketStartNs,
                  (long long)bucket.mBucketEndNs, (long long)bucket.mDuration);
         }

         protoOutput->end(wrapperToken);
     }

     protoOutput->end(protoToken);
     protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_END_REPORT_NANOS, (long long)dumpTimeNs);
     mPastBuckets.clear();
     mStartTimeNs = mCurrentBucketStartTimeNs;
 }

 void DurationMetricProducer::flushIfNeededLocked(const uint64_t& eventTime) {
     if (mCurrentBucketStartTimeNs + mBucketSizeNs > eventTime) {
         return;
     }
     VLOG("flushing...........");
     for (auto it = mCurrentSlicedDuration.begin(); it != mCurrentSlicedDuration.end();) {
         if (it->second->flushIfNeeded(eventTime, &mPastBuckets)) {
             VLOG("erase bucket for key %s", it->first.c_str());
             it = mCurrentSlicedDuration.erase(it);
         } else {
             ++it;
         }
     }

     int numBucketsForward = (eventTime - mCurrentBucketStartTimeNs) / mBucketSizeNs;
     mCurrentBucketStartTimeNs += numBucketsForward * mBucketSizeNs;
     mCurrentBucketNum += numBucketsForward;
 }

 bool DurationMetricProducer::hitGuardRailLocked(const HashableDimensionKey& newKey) {
     // the key is not new, we are good.
     if (mCurrentSlicedDuration.find(newKey) != mCurrentSlicedDuration.end()) {
         return false;
     }
     // 1. Report the tuple count if the tuple count > soft limit
     if (mCurrentSlicedDuration.size() > StatsdStats::kDimensionKeySizeSoftLimit - 1) {
         size_t newTupleCount = mCurrentSlicedDuration.size() + 1;
         StatsdStats::getInstance().noteMetricDimensionSize(mConfigKey, mName, newTupleCount);
         // 2. Don't add more tuples, we are above the allowed threshold. Drop the data.
         if (newTupleCount > StatsdStats::kDimensionKeySizeHardLimit) {
             ALOGE("DurationMetric %s dropping data for dimension key %s", mName.c_str(),
                   newKey.c_str());
             return true;
         }
     }
     return false;
 }

 void DurationMetricProducer::onMatchedLogEventInternalLocked(
         const size_t matcherIndex, const HashableDimensionKey& eventKey,
         const ConditionKey& conditionKeys, bool condition,
         const LogEvent& event) {
     flushIfNeededLocked(event.GetTimestampNs());

     if (matcherIndex == mStopAllIndex) {
         for (auto& pair : mCurrentSlicedDuration) {
             pair.second->noteStopAll(event.GetTimestampNs());
         }
         return;
     }


     if (mCurrentSlicedDuration.find(eventKey) == mCurrentSlicedDuration.end()) {
         if (hitGuardRailLocked(eventKey)) {
             return;
         }
         mCurrentSlicedDuration[eventKey] = createDurationTracker(eventKey);
     }

     auto it = mCurrentSlicedDuration.find(eventKey);

     std::vector<DimensionsValue> values = getDimensionKeys(event, mInternalDimensions);
     if (values.empty()) {
         if (matcherIndex == mStartIndex) {
             it->second->noteStart(DEFAULT_DIMENSION_KEY, condition,
                                   event.GetTimestampNs(), conditionKeys);
         } else if (matcherIndex == mStopIndex) {
             it->second->noteStop(DEFAULT_DIMENSION_KEY, event.GetTimestampNs(), false);
         }
     } else {
         for (const DimensionsValue& value : values) {
             if (matcherIndex == mStartIndex) {
                 it->second->noteStart(HashableDimensionKey(value), condition,
                                       event.GetTimestampNs(), conditionKeys);
             } else if (matcherIndex == mStopIndex) {
                 it->second->noteStop(HashableDimensionKey(value), event.GetTimestampNs(), false);
             }
         }
     }

 }

 size_t DurationMetricProducer::byteSizeLocked() const {
     size_t totalSize = 0;
     for (const auto& pair : mPastBuckets) {
         totalSize += pair.second.size() * kBucketSize;
     }
     return totalSize;
 }

 }  // namespace statsd
 }  // namespace os
 }  // namespace android
	/*
	* 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.
	*/

	#define DEBUG false

	#include "Log.h"
	#include "DurationMetricProducer.h"
	#include "guardrail/StatsdStats.h"
	#include "stats_util.h"
	#include "stats_log_util.h"

	#include <limits.h>
	#include <stdlib.h>

	using android::util::FIELD_COUNT_REPEATED;
	using android::util::FIELD_TYPE_BOOL;
	using android::util::FIELD_TYPE_FLOAT;
	using android::util::FIELD_TYPE_INT32;
	using android::util::FIELD_TYPE_INT64;
	using android::util::FIELD_TYPE_MESSAGE;
	using android::util::FIELD_TYPE_STRING;
	using android::util::ProtoOutputStream;
	using std::string;
	using std::unordered_map;
	using std::vector;

	namespace android {
	namespace os {
	namespace statsd {

	// for StatsLogReport
	const int FIELD_ID_NAME = 1;
	const int FIELD_ID_START_REPORT_NANOS = 2;
	const int FIELD_ID_END_REPORT_NANOS = 3;
	const int FIELD_ID_DURATION_METRICS = 6;
	// for DurationMetricDataWrapper
	const int FIELD_ID_DATA = 1;
	// for DurationMetricData
	const int FIELD_ID_DIMENSION = 1;
	const int FIELD_ID_BUCKET_INFO = 2;
	// for DurationBucketInfo
	const int FIELD_ID_START_BUCKET_NANOS = 1;
	const int FIELD_ID_END_BUCKET_NANOS = 2;
	const int FIELD_ID_DURATION = 3;

	DurationMetricProducer::DurationMetricProducer(const ConfigKey& key, const DurationMetric& metric,
	const int conditionIndex, const size_t startIndex,
	const size_t stopIndex, const size_t stopAllIndex,
	const bool nesting,
	const sp<ConditionWizard>& wizard,
	const FieldMatcher& internalDimensions,
	const uint64_t startTimeNs)
	: MetricProducer(metric.name(), key, startTimeNs, conditionIndex, wizard),
	mAggregationType(metric.aggregation_type()),
	mStartIndex(startIndex),
	mStopIndex(stopIndex),
	mStopAllIndex(stopAllIndex),
	mNested(nesting),
	mInternalDimensions(internalDimensions) {
	// TODO: The following boiler plate code appears in all MetricProducers, but we can't abstract
	// them in the base class, because the proto generated CountMetric, and DurationMetric are
	// not related. Maybe we should add a template in the future??
	if (metric.has_bucket() && metric.bucket().has_bucket_size_millis()) {
	mBucketSizeNs = metric.bucket().bucket_size_millis() * 1000000;
	} else {
	mBucketSizeNs = LLONG_MAX;
	}

	// TODO: use UidMap if uid->pkg_name is required
	mDimensions = metric.dimensions();

	if (metric.links().size() > 0) {
	mConditionLinks.insert(mConditionLinks.begin(), metric.links().begin(),
	metric.links().end());
	mConditionSliced = true;
	}

	VLOG("metric %s created. bucket size %lld start_time: %lld", metric.name().c_str(),
	(long long)mBucketSizeNs, (long long)mStartTimeNs);
	}

	DurationMetricProducer::~DurationMetricProducer() {
	VLOG("~DurationMetric() called");
	}

	sp<AnomalyTracker> DurationMetricProducer::addAnomalyTracker(const Alert &alert) {
	std::lock_guard<std::mutex> lock(mMutex);
	if (alert.trigger_if_sum_gt() > alert.number_of_buckets() * mBucketSizeNs) {
	ALOGW("invalid alert: threshold (%lld) > possible recordable value (%d x %lld)",
	alert.trigger_if_sum_gt(), alert.number_of_buckets(),
	(long long)mBucketSizeNs);
	return nullptr;
	}
	sp<DurationAnomalyTracker> anomalyTracker = new DurationAnomalyTracker(alert, mConfigKey);
	if (anomalyTracker != nullptr) {
	mAnomalyTrackers.push_back(anomalyTracker);
	}
	return anomalyTracker;
	}

	unique_ptr<DurationTracker> DurationMetricProducer::createDurationTracker(
	const HashableDimensionKey& eventKey) const {
	switch (mAggregationType) {
	case DurationMetric_AggregationType_SUM:
	return make_unique<OringDurationTracker>(
	mConfigKey, mName, eventKey, mWizard, mConditionTrackerIndex, mNested,
	mCurrentBucketStartTimeNs, mBucketSizeNs, mAnomalyTrackers);
	case DurationMetric_AggregationType_MAX_SPARSE:
	return make_unique<MaxDurationTracker>(
	mConfigKey, mName, eventKey, mWizard, mConditionTrackerIndex, mNested,
	mCurrentBucketStartTimeNs, mBucketSizeNs, mAnomalyTrackers);
	}
	}

	void DurationMetricProducer::onSlicedConditionMayChangeLocked(const uint64_t eventTime) {
	VLOG("Metric %s onSlicedConditionMayChange", mName.c_str());
	flushIfNeededLocked(eventTime);
	// Now for each of the on-going event, check if the condition has changed for them.
	for (auto& pair : mCurrentSlicedDuration) {
	pair.second->onSlicedConditionMayChange(eventTime);
	}
	}

	void DurationMetricProducer::onConditionChangedLocked(const bool conditionMet,
	const uint64_t eventTime) {
	VLOG("Metric %s onConditionChanged", mName.c_str());
	mCondition = conditionMet;
	flushIfNeededLocked(eventTime);
	// TODO: need to populate the condition change time from the event which triggers the condition
	// change, instead of using current time.
	for (auto& pair : mCurrentSlicedDuration) {
	pair.second->onConditionChanged(conditionMet, eventTime);
	}
	}

	void DurationMetricProducer::onDumpReportLocked(const uint64_t dumpTimeNs, StatsLogReport* report) {
	flushIfNeededLocked(dumpTimeNs);
	report->set_metric_name(mName);
	report->set_start_report_nanos(mStartTimeNs);

	auto duration_metrics = report->mutable_duration_metrics();
	for (const auto& pair : mPastBuckets) {
	DurationMetricData* metricData = duration_metrics->add_data();
	*metricData->mutable_dimension() = pair.first.getDimensionsValue();
	for (const auto& bucket : pair.second) {
	auto bucketInfo = metricData->add_bucket_info();
	bucketInfo->set_start_bucket_nanos(bucket.mBucketStartNs);
	bucketInfo->set_end_bucket_nanos(bucket.mBucketEndNs);
	bucketInfo->set_duration_nanos(bucket.mDuration);
	}
	}
	}

	void DurationMetricProducer::onDumpReportLocked(const uint64_t dumpTimeNs,
	ProtoOutputStream* protoOutput) {
	flushIfNeededLocked(dumpTimeNs);

	protoOutput->write(FIELD_TYPE_STRING \| FIELD_ID_NAME, mName);
	protoOutput->write(FIELD_TYPE_INT64 \| FIELD_ID_START_REPORT_NANOS, (long long)mStartTimeNs);
	long long protoToken = protoOutput->start(FIELD_TYPE_MESSAGE \| FIELD_ID_DURATION_METRICS);

	VLOG("metric %s dump report now...", mName.c_str());

	for (const auto& pair : mPastBuckets) {
	const HashableDimensionKey& hashableKey = pair.first;
	VLOG(" dimension key %s", hashableKey.c_str());

	long long wrapperToken =
	protoOutput->start(FIELD_TYPE_MESSAGE \| FIELD_COUNT_REPEATED \| FIELD_ID_DATA);

	// First fill dimension.
	long long dimensionToken = protoOutput->start(
	FIELD_TYPE_MESSAGE \| FIELD_COUNT_REPEATED \| FIELD_ID_DIMENSION);
	writeDimensionsValueProtoToStream(hashableKey.getDimensionsValue(), protoOutput);
	protoOutput->end(dimensionToken);

	// Then fill bucket_info (DurationBucketInfo).
	for (const auto& bucket : pair.second) {
	long long bucketInfoToken = protoOutput->start(
	FIELD_TYPE_MESSAGE \| FIELD_COUNT_REPEATED \| FIELD_ID_BUCKET_INFO);
	protoOutput->write(FIELD_TYPE_INT64 \| FIELD_ID_START_BUCKET_NANOS,
	(long long)bucket.mBucketStartNs);
	protoOutput->write(FIELD_TYPE_INT64 \| FIELD_ID_END_BUCKET_NANOS,
	(long long)bucket.mBucketEndNs);
	protoOutput->write(FIELD_TYPE_INT64 \| FIELD_ID_DURATION, (long long)bucket.mDuration);
	protoOutput->end(bucketInfoToken);
	VLOG("\t bucket [%lld - %lld] duration: %lld", (long long)bucket.mBucketStartNs,
	(long long)bucket.mBucketEndNs, (long long)bucket.mDuration);
	}

	protoOutput->end(wrapperToken);
	}

	protoOutput->end(protoToken);
	protoOutput->write(FIELD_TYPE_INT64 \| FIELD_ID_END_REPORT_NANOS, (long long)dumpTimeNs);
	mPastBuckets.clear();
	mStartTimeNs = mCurrentBucketStartTimeNs;
	}

	void DurationMetricProducer::flushIfNeededLocked(const uint64_t& eventTime) {
	if (mCurrentBucketStartTimeNs + mBucketSizeNs > eventTime) {
	return;
	}
	VLOG("flushing...........");
	for (auto it = mCurrentSlicedDuration.begin(); it != mCurrentSlicedDuration.end();) {
	if (it->second->flushIfNeeded(eventTime, &mPastBuckets)) {
	VLOG("erase bucket for key %s", it->first.c_str());
	it = mCurrentSlicedDuration.erase(it);
	} else {
	++it;
	}
	}

	int numBucketsForward = (eventTime - mCurrentBucketStartTimeNs) / mBucketSizeNs;
	mCurrentBucketStartTimeNs += numBucketsForward * mBucketSizeNs;
	mCurrentBucketNum += numBucketsForward;
	}

	bool DurationMetricProducer::hitGuardRailLocked(const HashableDimensionKey& newKey) {
	// the key is not new, we are good.
	if (mCurrentSlicedDuration.find(newKey) != mCurrentSlicedDuration.end()) {
	return false;
	}
	// 1. Report the tuple count if the tuple count > soft limit
	if (mCurrentSlicedDuration.size() > StatsdStats::kDimensionKeySizeSoftLimit - 1) {
	size_t newTupleCount = mCurrentSlicedDuration.size() + 1;
	StatsdStats::getInstance().noteMetricDimensionSize(mConfigKey, mName, newTupleCount);
	// 2. Don't add more tuples, we are above the allowed threshold. Drop the data.
	if (newTupleCount > StatsdStats::kDimensionKeySizeHardLimit) {
	ALOGE("DurationMetric %s dropping data for dimension key %s", mName.c_str(),
	newKey.c_str());
	return true;
	}
	}
	return false;
	}

	void DurationMetricProducer::onMatchedLogEventInternalLocked(
	const size_t matcherIndex, const HashableDimensionKey& eventKey,
	const ConditionKey& conditionKeys, bool condition,
	const LogEvent& event) {
	flushIfNeededLocked(event.GetTimestampNs());

	if (matcherIndex == mStopAllIndex) {
	for (auto& pair : mCurrentSlicedDuration) {
	pair.second->noteStopAll(event.GetTimestampNs());
	}
	return;
	}


	if (mCurrentSlicedDuration.find(eventKey) == mCurrentSlicedDuration.end()) {
	if (hitGuardRailLocked(eventKey)) {
	return;
	}
	mCurrentSlicedDuration[eventKey] = createDurationTracker(eventKey);
	}

	auto it = mCurrentSlicedDuration.find(eventKey);

	std::vector<DimensionsValue> values = getDimensionKeys(event, mInternalDimensions);
	if (values.empty()) {
	if (matcherIndex == mStartIndex) {
	it->second->noteStart(DEFAULT_DIMENSION_KEY, condition,
	event.GetTimestampNs(), conditionKeys);
	} else if (matcherIndex == mStopIndex) {
	it->second->noteStop(DEFAULT_DIMENSION_KEY, event.GetTimestampNs(), false);
	}
	} else {
	for (const DimensionsValue& value : values) {
	if (matcherIndex == mStartIndex) {
	it->second->noteStart(HashableDimensionKey(value), condition,
	event.GetTimestampNs(), conditionKeys);
	} else if (matcherIndex == mStopIndex) {
	it->second->noteStop(HashableDimensionKey(value), event.GetTimestampNs(), false);
	}
	}
	}

	}

	size_t DurationMetricProducer::byteSizeLocked() const {
	size_t totalSize = 0;
	for (const auto& pair : mPastBuckets) {
	totalSize += pair.second.size() * kBucketSize;
	}
	return totalSize;
	}

	} // namespace statsd
	} // namespace os
	} // namespace android