| /* |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include <gtest/gtest_prod.h> |
| #include <utils/threads.h> |
| #include <list> |
| #include "../anomaly/AnomalyTracker.h" |
| #include "../condition/ConditionTracker.h" |
| #include "../external/PullDataReceiver.h" |
| #include "../external/StatsPullerManager.h" |
| #include "MetricProducer.h" |
| #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h" |
| |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| struct ValueBucket { |
| int64_t mBucketStartNs; |
| int64_t mBucketEndNs; |
| int64_t mValue; |
| }; |
| |
| class ValueMetricProducer : public virtual MetricProducer, public virtual PullDataReceiver { |
| public: |
| ValueMetricProducer(const ConfigKey& key, const ValueMetric& valueMetric, |
| const int conditionIndex, const sp<ConditionWizard>& wizard, |
| const int pullTagId, const uint64_t startTimeNs); |
| |
| virtual ~ValueMetricProducer(); |
| |
| void onDataPulled(const std::vector<std::shared_ptr<LogEvent>>& data) override; |
| |
| // ValueMetric needs special logic if it's a pulled atom. |
| void notifyAppUpgrade(const uint64_t& eventTimeNs, const string& apk, const int uid, |
| const int64_t version) override { |
| std::lock_guard<std::mutex> lock(mMutex); |
| |
| if (mPullTagId != -1) { |
| vector<shared_ptr<LogEvent>> allData; |
| mStatsPullerManager->Pull(mPullTagId, &allData); |
| if (allData.size() == 0) { |
| // This shouldn't happen since this valuemetric is not useful now. |
| } |
| |
| // Pretend the pulled data occurs right before the app upgrade event. |
| mCondition = false; |
| for (const auto& data : allData) { |
| data->setElapsedTimestampNs(eventTimeNs - 1); |
| onMatchedLogEventLocked(0, *data); |
| } |
| |
| flushCurrentBucketLocked(eventTimeNs); |
| mCurrentBucketStartTimeNs = eventTimeNs; |
| |
| mCondition = true; |
| for (const auto& data : allData) { |
| data->setElapsedTimestampNs(eventTimeNs); |
| onMatchedLogEventLocked(0, *data); |
| } |
| } else { // For pushed value metric, we simply flush and reset the current bucket start. |
| flushCurrentBucketLocked(eventTimeNs); |
| mCurrentBucketStartTimeNs = eventTimeNs; |
| } |
| }; |
| |
| protected: |
| void onMatchedLogEventInternalLocked( |
| const size_t matcherIndex, const MetricDimensionKey& eventKey, |
| const ConditionKey& conditionKey, bool condition, |
| const LogEvent& event) override; |
| |
| private: |
| void onDumpReportLocked(const uint64_t dumpTimeNs, |
| android::util::ProtoOutputStream* protoOutput) override; |
| |
| // Internal interface to handle condition change. |
| void onConditionChangedLocked(const bool conditionMet, const uint64_t eventTime) override; |
| |
| // Internal interface to handle sliced condition change. |
| void onSlicedConditionMayChangeLocked(bool overallCondition, const uint64_t eventTime) override; |
| |
| // Internal function to calculate the current used bytes. |
| size_t byteSizeLocked() const override; |
| |
| void dumpStatesLocked(FILE* out, bool verbose) const override; |
| |
| // Util function to flush the old packet. |
| void flushIfNeededLocked(const uint64_t& eventTime) override; |
| |
| void flushCurrentBucketLocked(const uint64_t& eventTimeNs) override; |
| |
| void dropDataLocked(const uint64_t dropTimeNs) override; |
| |
| const FieldMatcher mValueField; |
| |
| std::shared_ptr<StatsPullerManager> mStatsPullerManager; |
| |
| // for testing |
| ValueMetricProducer(const ConfigKey& key, const ValueMetric& valueMetric, |
| const int conditionIndex, const sp<ConditionWizard>& wizard, |
| const int pullTagId, const uint64_t startTimeNs, |
| std::shared_ptr<StatsPullerManager> statsPullerManager); |
| |
| // tagId for pulled data. -1 if this is not pulled |
| const int mPullTagId; |
| |
| int mField; |
| |
| // internal state of a bucket. |
| typedef struct { |
| // Pulled data always come in pair of <start, end>. This holds the value |
| // for start. The diff (end - start) is added to sum. |
| long start; |
| // Whether the start data point is updated |
| bool startUpdated; |
| // If end data point comes before the start, record this pair as tainted |
| // and the value is not added to the running sum. |
| int tainted; |
| // Running sum of known pairs in this bucket |
| long sum; |
| } Interval; |
| |
| std::unordered_map<MetricDimensionKey, Interval> mCurrentSlicedBucket; |
| |
| std::unordered_map<MetricDimensionKey, long> mCurrentFullBucket; |
| |
| // Save the past buckets and we can clear when the StatsLogReport is dumped. |
| // TODO: Add a lock to mPastBuckets. |
| std::unordered_map<MetricDimensionKey, std::vector<ValueBucket>> mPastBuckets; |
| |
| // Util function to check whether the specified dimension hits the guardrail. |
| bool hitGuardRailLocked(const MetricDimensionKey& newKey); |
| |
| static const size_t kBucketSize = sizeof(ValueBucket{}); |
| |
| const size_t mDimensionSoftLimit; |
| |
| const size_t mDimensionHardLimit; |
| |
| FRIEND_TEST(ValueMetricProducerTest, TestNonDimensionalEvents); |
| FRIEND_TEST(ValueMetricProducerTest, TestEventsWithNonSlicedCondition); |
| FRIEND_TEST(ValueMetricProducerTest, TestPushedEventsWithUpgrade); |
| FRIEND_TEST(ValueMetricProducerTest, TestPulledValueWithUpgrade); |
| FRIEND_TEST(ValueMetricProducerTest, TestPushedEventsWithoutCondition); |
| FRIEND_TEST(ValueMetricProducerTest, TestAnomalyDetection); |
| }; |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |