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/**
 *    Copyright (C) 2014 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.
 */

#pragma once

namespace mongo {
class BSONObj;
class Status;

/**
 * Converts "result" into a Status object.  The input is expected to be the object returned
 * by running a command.  Returns ErrorCodes::CommandResultSchemaViolation if "result" does
 * not look like the result of a command.
 *
 * Command results must have a field called "ok" whose value may be interpreted as a boolean.
 * If the value interpreted as a boolean is true, the resultant status is Status::OK().
 * Otherwise, it is an error status.  The code comes from the "code" field, if present and
 * number-ish, while the reason message will come from the errmsg field, if present and
 * string-ish.
 */
Status getStatusFromCommandResult(const BSONObj& result);


/**
 * Extracts the write concern error from a command response.
 */
Status getWriteConcernStatusFromCommandResult(const BSONObj& cmdResponse);


/**
 * Extracts the first write error from a command response and converts it into a status. This
 * ignores all errors after the first and does not preserve the write error index, so it should not
 * be used with bulk writes.
 */
Status getFirstWriteErrorStatusFromCommandResult(const BSONObj& cmdResponse);

/**
 * Extracts any type of error from a write command response.
 */
Status getStatusFromWriteCommandReply(const BSONObj& cmdResponse);

}  // namespace mongo