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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef EVENT_METRIC_PRODUCER_H
     18 #define EVENT_METRIC_PRODUCER_H
     19 
     20 #include <unordered_map>
     21 
     22 #include <android/util/ProtoOutputStream.h>
     23 
     24 #include "../condition/ConditionTracker.h"
     25 #include "../matchers/matcher_util.h"
     26 #include "MetricProducer.h"
     27 #include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
     28 #include "stats_util.h"
     29 
     30 namespace android {
     31 namespace os {
     32 namespace statsd {
     33 
     34 class EventMetricProducer : public MetricProducer {
     35 public:
     36     EventMetricProducer(const ConfigKey& key, const EventMetric& eventMetric,
     37                         const int conditionIndex, const sp<ConditionWizard>& wizard,
     38                         const int64_t startTimeNs);
     39 
     40     virtual ~EventMetricProducer();
     41 
     42 private:
     43     void onMatchedLogEventInternalLocked(
     44             const size_t matcherIndex, const MetricDimensionKey& eventKey,
     45             const ConditionKey& conditionKey, bool condition,
     46             const LogEvent& event) override;
     47 
     48     void onDumpReportLocked(const int64_t dumpTimeNs,
     49                             const bool include_current_partial_bucket,
     50                             const bool erase_data,
     51                             const DumpLatency dumpLatency,
     52                             std::set<string> *str_set,
     53                             android::util::ProtoOutputStream* protoOutput) override;
     54     void clearPastBucketsLocked(const int64_t dumpTimeNs) override;
     55 
     56     // Internal interface to handle condition change.
     57     void onConditionChangedLocked(const bool conditionMet, const int64_t eventTime) override;
     58 
     59     // Internal interface to handle sliced condition change.
     60     void onSlicedConditionMayChangeLocked(bool overallCondition, const int64_t eventTime) override;
     61 
     62     void dropDataLocked(const int64_t dropTimeNs) override;
     63 
     64     // Internal function to calculate the current used bytes.
     65     size_t byteSizeLocked() const override;
     66 
     67     void dumpStatesLocked(FILE* out, bool verbose) const override{};
     68 
     69     // Maps to a EventMetricDataWrapper. Storing atom events in ProtoOutputStream
     70     // is more space efficient than storing LogEvent.
     71     std::unique_ptr<android::util::ProtoOutputStream> mProto;
     72 };
     73 
     74 }  // namespace statsd
     75 }  // namespace os
     76 }  // namespace android
     77 #endif  // EVENT_METRIC_PRODUCER_H
     78