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/**
* Copyright 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
#include "mongo/base/status_with.h"
namespace mongo {
namespace repl {
class ReplicationCoordinatorExternalState;
class ReplicaSetConfig;
/**
* Validates that "newConfig" is a legal configuration that the current
* node can accept from its local storage during startup.
*
* Returns the index of the current node's member configuration in "newConfig",
* on success, and an indicative error on failure.
*
* If "oldConfig" is valid, this method only succeds if "newConfig" is a legal
* successor configuration.
*/
StatusWith<int> validateConfigForStartUp(
ReplicationCoordinatorExternalState* externalState,
const ReplicaSetConfig& oldConfig,
const ReplicaSetConfig& newConfig);
/**
* Validates that "newConfig" is a legal initial configuration that can be
* initiated by the current node (identified via "externalState").
*
* Returns the index of the current node's member configuration in "newConfig",
* on success, and an indicative error on failure.
*/
StatusWith<int> validateConfigForInitiate(
ReplicationCoordinatorExternalState* externalState,
const ReplicaSetConfig& newConfig);
/**
* Validates that "newConfig" is a legal successor configuration to "oldConfig" that can be
* initiated by the current node (identified via "externalState").
*
* If "force" is set to true, then compatibility with the old configuration and electability of
* the current node in "newConfig" are not considered when determining if the reconfig is valid.
*
* Returns the index of the current node's member configuration in "newConfig",
* on success, and an indicative error on failure.
*/
StatusWith<int> validateConfigForReconfig(
ReplicationCoordinatorExternalState* externalState,
const ReplicaSetConfig& oldConfig,
const ReplicaSetConfig& newConfig,
bool force);
/**
* Validates that "newConfig" is an acceptable configuration when received in a heartbeat
* reasponse.
*
* If the new configuration omits the current node, but is otherwise valid, returns
* ErrorCodes::NodeNotFound. If the configuration is wholly valid, returns Status::OK().
* Otherwise, returns some other error status.
*/
StatusWith<int> validateConfigForHeartbeatReconfig(
ReplicationCoordinatorExternalState* externalState,
const ReplicaSetConfig& newConfig);
} // namespace repl
} // namespace mongo
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