cmds/statsd/src/metrics/EventMetricProducer.h

/*
 * 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 EVENT_METRIC_PRODUCER_H
#define EVENT_METRIC_PRODUCER_H

#include <unordered_map>

#include <android/util/ProtoOutputStream.h>

#include "../condition/ConditionTracker.h"
#include "../matchers/matcher_util.h"
#include "MetricProducer.h"
#include "frameworks/base/cmds/statsd/src/stats_log.pb.h"
#include "frameworks/base/cmds/statsd/src/statsd_config.pb.h"
#include "stats_util.h"

namespace android {
namespace os {
namespace statsd {

class EventMetricProducer : public MetricProducer {
public:
    // TODO: Pass in the start time from MetricsManager, it should be consistent for all metrics.
    EventMetricProducer(const EventMetric& eventMetric, const int conditionIndex,
                        const sp<ConditionWizard>& wizard, const uint64_t startTimeNs);

    virtual ~EventMetricProducer();

    void onMatchedLogEventInternal(const size_t matcherIndex, const HashableDimensionKey& eventKey,
                                   const std::map<std::string, HashableDimensionKey>& conditionKey,
                                   bool condition, const LogEvent& event,
                                   bool scheduledPull) override;

    void onConditionChanged(const bool conditionMet, const uint64_t eventTime) override;

    void finish() override;

    StatsLogReport onDumpReport() override;

    void onSlicedConditionMayChange(const uint64_t eventTime) override;

    size_t byteSize() override;

    // TODO: Implement this later.
    virtual void notifyAppUpgrade(const string& apk, const int uid, const int version) override{};
    // TODO: Implement this later.
    virtual void notifyAppRemoved(const string& apk, const int uid) override{};

private:
    const EventMetric mMetric;

    std::unique_ptr<android::util::ProtoOutputStream> mProto;

    long long mProtoToken;

    void startNewProtoOutputStream(long long timestamp);
};

}  // namespace statsd
}  // namespace os
}  // namespace android
#endif  // EVENT_METRIC_PRODUCER_H