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/**
* Copyright (C) 2015 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kQuery
#include "mongo/platform/basic.h"
#include "mongo/s/query/router_stage_limit.h"
namespace mongo {
RouterStageLimit::RouterStageLimit(OperationContext* opCtx,
std::unique_ptr<RouterExecStage> child,
long long limit)
: RouterExecStage(opCtx, std::move(child)), _limit(limit) {
invariant(limit > 0);
}
StatusWith<ClusterQueryResult> RouterStageLimit::next() {
if (_returnedSoFar >= _limit) {
return {ClusterQueryResult()};
}
auto childResult = getChildStage()->next();
if (!childResult.isOK()) {
return childResult;
}
if (!childResult.getValue().isEOF()) {
++_returnedSoFar;
}
return childResult;
}
void RouterStageLimit::kill(OperationContext* opCtx) {
getChildStage()->kill(opCtx);
}
bool RouterStageLimit::remotesExhausted() {
return getChildStage()->remotesExhausted();
}
Status RouterStageLimit::setAwaitDataTimeout(Milliseconds awaitDataTimeout) {
return getChildStage()->setAwaitDataTimeout(awaitDataTimeout);
}
} // namespace mongo
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