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/*
* 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.
*/
#define DEBUG false // STOPSHIP if true
#include "Log.h"
#include "StatsPuller.h"
#include "guardrail/StatsdStats.h"
#include "puller_util.h"
namespace android {
namespace os {
namespace statsd {
using std::lock_guard;
sp<UidMap> StatsPuller::mUidMap = nullptr;
void StatsPuller::SetUidMap(const sp<UidMap>& uidMap) { mUidMap = uidMap; }
// ValueMetric has a minimum bucket size of 10min so that we don't pull too frequently
StatsPuller::StatsPuller(const int tagId)
: mTagId(tagId) {
if (StatsdStats::kPullerCooldownMap.find(tagId) == StatsdStats::kPullerCooldownMap.end()) {
mCoolDownSec = StatsdStats::kDefaultPullerCooldown;
} else {
mCoolDownSec = StatsdStats::kPullerCooldownMap[tagId];
}
VLOG("Puller for tag %d created. Cooldown set to %ld", mTagId, mCoolDownSec);
}
bool StatsPuller::Pull(std::vector<std::shared_ptr<LogEvent>>* data) {
lock_guard<std::mutex> lock(mLock);
StatsdStats::getInstance().notePull(mTagId);
long curTime = time(nullptr);
if (curTime - mLastPullTimeSec < mCoolDownSec) {
(*data) = mCachedData;
StatsdStats::getInstance().notePullFromCache(mTagId);
return true;
}
if (mMinPullIntervalSec > curTime - mLastPullTimeSec) {
mMinPullIntervalSec = curTime - mLastPullTimeSec;
StatsdStats::getInstance().updateMinPullIntervalSec(mTagId, mMinPullIntervalSec);
}
mCachedData.clear();
mLastPullTimeSec = curTime;
bool ret = PullInternal(&mCachedData);
if (ret) {
mergeIsolatedUidsToHostUid(mCachedData, mUidMap, mTagId);
(*data) = mCachedData;
}
return ret;
}
int StatsPuller::ForceClearCache() {
return clearCache();
}
int StatsPuller::clearCache() {
lock_guard<std::mutex> lock(mLock);
int ret = mCachedData.size();
mCachedData.clear();
mLastPullTimeSec = 0;
return ret;
}
int StatsPuller::ClearCacheIfNecessary(long timestampSec) {
if (timestampSec - mLastPullTimeSec > mCoolDownSec) {
return clearCache();
} else {
return 0;
}
}
} // namespace statsd
} // namespace os
} // namespace android
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