| /* |
| * 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 METRIC_PRODUCER_H |
| #define METRIC_PRODUCER_H |
| |
| #include "condition/ConditionWizard.h" |
| #include "matchers/matcher_util.h" |
| #include "packages/PackageInfoListener.h" |
| |
| #include <log/logprint.h> |
| #include <utils/RefBase.h> |
| #include "frameworks/base/cmds/statsd/src/stats_log.pb.h" |
| |
| namespace android { |
| namespace os { |
| namespace statsd { |
| |
| // A MetricProducer is responsible for compute one single metrics, creating stats log report, and |
| // writing the report to dropbox. MetricProducers should respond to package changes as required in |
| // PackageInfoListener, but if none of the metrics are slicing by package name, then the update can |
| // be a no-op. |
| class MetricProducer : public virtual PackageInfoListener { |
| public: |
| MetricProducer(const int64_t startTimeNs, const int conditionIndex, |
| const sp<ConditionWizard>& wizard) |
| : mStartTimeNs(startTimeNs), |
| mCurrentBucketStartTimeNs(startTimeNs), |
| mCondition(conditionIndex >= 0 ? false : true), |
| mWizard(wizard), |
| mConditionTrackerIndex(conditionIndex) { |
| // reuse the same map for non-sliced metrics too. this way, we avoid too many if-else. |
| mDimensionKeyMap[DEFAULT_DIMENSION_KEY] = std::vector<KeyValuePair>(); |
| }; |
| virtual ~MetricProducer(){}; |
| |
| // Consume the parsed stats log entry that already matched the "what" of the metric. |
| void onMatchedLogEvent(const size_t matcherIndex, const LogEvent& event, bool scheduledPull); |
| |
| virtual void onConditionChanged(const bool condition, const uint64_t eventTime) = 0; |
| |
| virtual void onSlicedConditionMayChange(const uint64_t eventTime) = 0; |
| |
| // This is called when the metric collecting is done, e.g., when there is a new configuration |
| // coming. MetricProducer should do the clean up, and dump existing data to dropbox. |
| virtual void finish() = 0; |
| |
| virtual StatsLogReport onDumpReport() = 0; |
| |
| virtual bool isConditionSliced() const { |
| return mConditionSliced; |
| }; |
| |
| virtual size_t byteSize() = 0; |
| |
| protected: |
| const uint64_t mStartTimeNs; |
| |
| uint64_t mCurrentBucketStartTimeNs; |
| |
| int64_t mBucketSizeNs; |
| |
| bool mCondition; |
| |
| bool mConditionSliced; |
| |
| sp<ConditionWizard> mWizard; |
| |
| int mConditionTrackerIndex; |
| |
| std::vector<KeyMatcher> mDimension; // The dimension defined in statsd_config |
| |
| // Keep the map from the internal HashableDimensionKey to std::vector<KeyValuePair> |
| // that StatsLogReport wants. |
| std::unordered_map<HashableDimensionKey, std::vector<KeyValuePair>> mDimensionKeyMap; |
| |
| std::vector<EventConditionLink> mConditionLinks; |
| |
| /* |
| * Individual metrics can implement their own business logic here. All pre-processing is done. |
| * |
| * [matcherIndex]: the index of the matcher which matched this event. This is interesting to |
| * DurationMetric, because it has start/stop/stop_all 3 matchers. |
| * [eventKey]: the extracted dimension key for the final output. if the metric doesn't have |
| * dimensions, it will be DEFAULT_DIMENSION_KEY |
| * [conditionKey]: the keys of conditions which should be used to query the condition for this |
| * target event (from EventConditionLink). This is passed to individual metrics |
| * because DurationMetric needs it to be cached. |
| * [condition]: whether condition is met. If condition is sliced, this is the result coming from |
| * query with ConditionWizard; If condition is not sliced, this is the |
| * nonSlicedCondition. |
| * [event]: the log event, just in case the metric needs its data, e.g., EventMetric. |
| */ |
| virtual void onMatchedLogEventInternal( |
| const size_t matcherIndex, const HashableDimensionKey& eventKey, |
| const std::map<std::string, HashableDimensionKey>& conditionKey, bool condition, |
| const LogEvent& event, bool scheduledPull) = 0; |
| }; |
| |
| } // namespace statsd |
| } // namespace os |
| } // namespace android |
| #endif // METRIC_PRODUCER_H |