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path: root/src/mongo/db/handle_request_response.cpp
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/**
 *    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 "mongo/db/handle_request_response.h"
#include "mongo/base/transaction_error.h"

namespace mongo {

BSONObj getErrorLabels(const OperationSessionInfoFromClient& sessionOptions,
                       const std::string& commandName,
                       ErrorCodes::Error code,
                       bool hasWriteConcernError) {

    // By specifying "autocommit", the user indicates they want to run a transaction.
    // It is always false when set.
    if (!sessionOptions.getAutocommit()) {
        return {};
    }

    // The errors that indicate the transaction fails without any persistent side-effect.
    bool isTransient = isTransientTransactionError(
        code,
        hasWriteConcernError,
        commandName == "commitTransaction" || commandName == "coordinateCommitTransaction");

    if (isTransient) {
        return BSON("errorLabels" << BSON_ARRAY("TransientTransactionError"));
    }
    return {};
}

}  // namespace mongo