1 /** 2 * Copyright (C) 2020-present MongoDB, Inc. 3 * 4 * This program is free software: you can redistribute it and/or modify 5 * it under the terms of the Server Side Public License, version 1, 6 * as published by MongoDB, Inc. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * Server Side Public License for more details. 12 * 13 * You should have received a copy of the Server Side Public License 14 * along with this program. If not, see 15 * <http://www.mongodb.com/licensing/server-side-public-license>. 16 * 17 * As a special exception, the copyright holders give permission to link the 18 * code of portions of this program with the OpenSSL library under certain 19 * conditions as described in each individual source file and distribute 20 * linked combinations including the program with the OpenSSL library. You 21 * must comply with the Server Side Public License in all respects for 22 * all of the code used other than as permitted herein. If you modify file(s) 23 * with this exception, you may extend this exception to your version of the 24 * file(s), but you are not obligated to do so. If you do not wish to do so, 25 * delete this exception statement from your version. If you delete this 26 * exception statement from all source files in the program, then also delete 27 * it in the license file. 28 */ 29 30 #pragma once 31 32 #include "mongo/db/operation_context.h" 33 34 namespace mongo { 35 namespace repl { 36 37 /** 38 * Allows non-local writes despite _canAcceptNonLocalWrites being false on a single OperationContext 39 * while in scope. 40 * 41 * Resets to original value when leaving scope so it is safe to nest. 42 */ 43 class AllowNonLocalWritesBlock { 44 AllowNonLocalWritesBlock(const AllowNonLocalWritesBlock&) = delete; 45 AllowNonLocalWritesBlock& operator=(const AllowNonLocalWritesBlock&) = delete; 46 47 public: 48 AllowNonLocalWritesBlock(OperationContext* opCtx); 49 ~AllowNonLocalWritesBlock(); 50 51 private: 52 OperationContext* const _opCtx; 53 const bool _initialState; 54 }; 55 56 bool alwaysAllowNonLocalWrites(const OperationContext* opCtx); 57 58 } // namespace repl 59 } // namespace mongo 60