/**
 *    Copyright (C) 2018-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 <map>

#include "mongo/db/operation_context.h"

namespace mongo {
namespace catalog {

using MinVisibleTimestamp = Timestamp;
using MinVisibleTimestampMap = std::map<UUID, MinVisibleTimestamp>;

/**
 * Closes the catalog, destroying all associated in-memory data structures for all databases. After
 * a call to this function, it is illegal to access the catalog before calling openCatalog().
 *
 * Must be called with the global lock acquired in exclusive mode.
 */
MinVisibleTimestampMap closeCatalog(OperationContext* opCtx);

/**
 * Restores the catalog and all in-memory state after a call to closeCatalog().
 *
 * Must be called with the global lock acquired in exclusive mode.
 */
void openCatalog(OperationContext* opCtx,
                 const MinVisibleTimestampMap& catalogState,
                 Timestamp stableTimestamp);

/**
 * Restores the catalog and all in-memory state after a call to
 * closeCatalog -> reinitializeStorageEngine -> startupRecovery.
 *
 * Must be called with the global lock acquired in exclusive mode.
 */
void openCatalogAfterStorageChange(OperationContext* opCtx);
}  // namespace catalog
}  // namespace mongo