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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/storage/capped_snapshots.h"
namespace mongo {
auto getCappedSnapshots = RecoveryUnit::Snapshot::declareDecoration<CappedSnapshots>();
CappedSnapshots& CappedSnapshots::get(RecoveryUnit* ru) {
return getCappedSnapshots(ru->getSnapshot());
}
CappedSnapshots& CappedSnapshots::get(OperationContext* opCtx) {
return getCappedSnapshots(opCtx->recoveryUnit()->getSnapshot());
}
void CappedSnapshots::establish(OperationContext* opCtx, const Collection* coll) {
invariant(!opCtx->recoveryUnit()->isActive() ||
opCtx->lockState()->isCollectionLockedForMode(coll->ns(), MODE_X));
auto snapshot = coll->takeCappedVisibilitySnapshot();
_setSnapshot(coll->getRecordStore()->getIdent(), std::move(snapshot));
}
void CappedSnapshots::establish(OperationContext* opCtx, const CollectionPtr& coll) {
establish(opCtx, coll.get());
}
boost::optional<CappedVisibilitySnapshot> CappedSnapshots::getSnapshot(StringData ident) const {
auto it = _snapshots.find(ident);
if (it == _snapshots.end()) {
return boost::none;
}
return it->second;
}
void CappedSnapshots::_setSnapshot(StringData ident, CappedVisibilitySnapshot snapshot) {
_snapshots[ident] = std::move(snapshot);
}
} // namespace mongo
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