fa22d65f14
+ add adb command to manually clear puller cache + try to clear puller cache every 10s Test: manual test Change-Id: I8005cacd189de1880fcaeb030efbe21e6d3c0244
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define DEBUG false // STOPSHIP if true
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#include "Log.h"
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#include "StatsPuller.h"
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#include "guardrail/StatsdStats.h"
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namespace android {
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namespace os {
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namespace statsd {
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using std::lock_guard;
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// ValueMetric has a minimum bucket size of 10min so that we don't pull too frequently
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StatsPuller::StatsPuller(const int tagId)
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: mTagId(tagId) {
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if (StatsdStats::kPullerCooldownMap.find(tagId) == StatsdStats::kPullerCooldownMap.end()) {
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mCoolDownSec = StatsdStats::kDefaultPullerCooldown;
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} else {
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mCoolDownSec = StatsdStats::kPullerCooldownMap[tagId];
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}
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VLOG("Puller for tag %d created. Cooldown set to %ld", mTagId, mCoolDownSec);
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}
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bool StatsPuller::Pull(std::vector<std::shared_ptr<LogEvent>>* data) {
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lock_guard<std::mutex> lock(mLock);
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StatsdStats::getInstance().notePull(mTagId);
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long curTime = time(nullptr);
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if (curTime - mLastPullTimeSec < mCoolDownSec) {
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(*data) = mCachedData;
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StatsdStats::getInstance().notePullFromCache(mTagId);
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return true;
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}
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if (mMinPullIntervalSec > curTime - mLastPullTimeSec) {
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mMinPullIntervalSec = curTime - mLastPullTimeSec;
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StatsdStats::getInstance().updateMinPullIntervalSec(mTagId, mMinPullIntervalSec);
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}
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mCachedData.clear();
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mLastPullTimeSec = curTime;
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bool ret = PullInternal(&mCachedData);
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if (ret) {
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(*data) = mCachedData;
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}
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return ret;
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}
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int StatsPuller::ForceClearCache() {
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return clearCache();
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}
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int StatsPuller::clearCache() {
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lock_guard<std::mutex> lock(mLock);
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int ret = mCachedData.size();
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mCachedData.clear();
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mLastPullTimeSec = 0;
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return ret;
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}
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int StatsPuller::ClearCacheIfNecessary(long timestampSec) {
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if (timestampSec - mLastPullTimeSec > mCoolDownSec) {
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return clearCache();
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} else {
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return 0;
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}
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}
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} // namespace statsd
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} // namespace os
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} // namespace android
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