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/**
* Copyright (C) 2022-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/db/query/sbe_plan_cache_on_parameter_change.h"
#include "mongo/db/client.h"
namespace mongo::plan_cache_util {
namespace {
/**
* Given the current 'Client', returns a pointer to the 'ServiceContext' and an interface for
* updating the SBE plan cache,
*/
std::pair<ServiceContext*, OnParamChangeUpdater*> getUpdater(const Client& client) {
auto serviceCtx = client.getServiceContext();
tassert(6007013, "ServiceContext must be non null", serviceCtx);
auto updater = sbePlanCacheOnParamChangeUpdater(serviceCtx).get();
tassert(6007014, "Plan cache size updater must be non null", updater);
return {serviceCtx, updater};
}
} // namespace
Status clearSbeCacheOnParameterChangeHelper() {
if (auto client = Client::getCurrent()) {
auto&& [serviceCtx, updater] = getUpdater(*client);
updater->clearCache(serviceCtx);
}
return Status::OK();
}
Status onPlanCacheSizeUpdate(const std::string& str) {
auto newSize = memory_util::MemorySize::parse(str);
if (!newSize.isOK()) {
return newSize.getStatus();
}
// The client is nullptr if the parameter is supplied from the command line. In this case, we
// ignore the update event, the parameter will be processed when initializing the service
// context.
if (auto client = Client::getCurrent()) {
auto&& [serviceCtx, updater] = getUpdater(*client);
updater->updateCacheSize(serviceCtx, newSize.getValue());
}
return Status::OK();
}
Status validatePlanCacheSize(const std::string& str, const boost::optional<TenantId>&) {
return memory_util::MemorySize::parse(str).getStatus();
}
const Decorable<ServiceContext>::Decoration<std::unique_ptr<OnParamChangeUpdater>>
sbePlanCacheOnParamChangeUpdater =
ServiceContext::declareDecoration<std::unique_ptr<OnParamChangeUpdater>>();
} // namespace mongo::plan_cache_util
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