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/**
* Copyright (C) 2015 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 <memory>
#include <string>
#include <vector>
#include "mongo/client/remote_command_targeter.h"
namespace mongo {
class ReplicaSetMonitor;
/**
* Implements a replica-set backed remote command targeter, which monitors the specified
* replica set and responds to state changes.
*/
class RemoteCommandTargeterRS final : public RemoteCommandTargeter {
public:
/**
* Instantiates a new targeter for the specified replica set and seed hosts. The RS name
* and the seed hosts must match.
*/
RemoteCommandTargeterRS(const std::string& rsName, const std::vector<HostAndPort>& seedHosts);
ConnectionString connectionString() override;
StatusWith<HostAndPort> findHost(OperationContext* opCtx,
const ReadPreferenceSetting& readPref) override;
StatusWith<HostAndPort> findHostWithMaxWait(const ReadPreferenceSetting& readPref,
Milliseconds maxWait) override;
void markHostNotMaster(const HostAndPort& host, const Status& status) override;
void markHostUnreachable(const HostAndPort& host, const Status& status) override;
private:
// Name of the replica set which this targeter maintains
const std::string _rsName;
// Monitor for this replica set
std::shared_ptr<ReplicaSetMonitor> _rsMonitor;
};
} // namespace mongo
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