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op_cache.cpp 7.66 KiB
/*
* Copyright (C) 2014-2022 Savoir-faire Linux Inc.
* Author(s) : Adrien Béraud <adrien.beraud@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "op_cache.h"
namespace dht {
constexpr const std::chrono::seconds OpCache::EXPIRATION;
bool
OpValueCache::onValuesAdded(const std::vector<Sp<Value>>& vals, const system_clock::time_point& t) {
std::vector<Sp<Value>> newValues;
for (const auto& v : vals) {
auto viop = values.emplace(v->id, v);
if (viop.second) {
newValues.emplace_back(v);
} else {
viop.first->second.refCount++;
}
viop.first->second.updated = t;
}
return newValues.empty() ? true : callback(newValues, false);
}
bool
OpValueCache::onValuesExpired(const std::vector<Sp<Value>>& vals, const system_clock::time_point& t) {
std::vector<Sp<Value>> expiredValues;
for (const auto& v : vals) {
auto vit = values.find(v->id);
if (vit != values.end()) {
if (vit->second.updated > t)
continue;
vit->second.updated = t;
vit->second.refCount--;
if (not vit->second.refCount) {
expiredValues.emplace_back(std::move(vit->second.data));
values.erase(vit);
}
}
}
return expiredValues.empty() ? true : callback(expiredValues, true);
}
bool
OpValueCache::onValuesExpired(const std::vector<Value::Id>& vids, const system_clock::time_point& t)
{
std::vector<Sp<Value>> expiredValues;
for (const auto& vid : vids) {
auto vit = values.find(vid);
if (vit != values.end()) {
if (vit->second.updated > t)
continue;
vit->second.updated = t;
vit->second.refCount--;