blob: 936c47e92f2ca08636ade12d664274d1d9ca85a0 [file] [log] [blame]
/*
* 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 <android/os/IStatsCompanionService.h>
#include <utils/RefBase.h>
#include <utils/String16.h>
#include <mutex>
#include <vector>
#include "packages/UidMap.h"
#include "guardrail/StatsdStats.h"
#include "logd/LogEvent.h"
#include "puller_util.h"
namespace android {
namespace os {
namespace statsd {
class StatsPuller : public virtual RefBase {
public:
StatsPuller(const int tagId);
virtual ~StatsPuller() {}
bool Pull(std::vector<std::shared_ptr<LogEvent>>* data);
// Clear cache immediately
int ForceClearCache();
// Clear cache if elapsed time is more than cooldown time
int ClearCacheIfNecessary(long timestampSec);
static void SetUidMap(const sp<UidMap>& uidMap);
virtual void SetStatsCompanionService(sp<IStatsCompanionService> statsCompanionService){};
protected:
// The atom tag id this puller pulls
const int mTagId;
private:
mutable std::mutex mLock;
// Minimum time before this puller does actual pull again.
// If a pull request comes before cooldown, a cached version from purevious pull
// will be returned.
// The actual value should be determined by individual pullers.
long mCoolDownSec;
// For puller stats
long mMinPullIntervalSec = LONG_MAX;
virtual bool PullInternal(std::vector<std::shared_ptr<LogEvent>>* data) = 0;
// Cache of data from last pull. If next request comes before cool down finishes,
// cached data will be returned.
std::vector<std::shared_ptr<LogEvent>> mCachedData;
long mLastPullTimeSec;
int clearCache();
static sp<UidMap> mUidMap;
};
} // namespace statsd
} // namespace os
} // namespace android