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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 <set>
#include <string>
#include "mongo/db/jsobj.h"
#include "mongo/util/concurrency/mutex.h"
namespace mongo {
namespace repl {
extern int maxSyncSourceLagSecs;
extern double replElectionTimeoutOffsetLimitFraction;
class ReplSettings {
public:
// Allow index prefetching to be turned on/off
enum class IndexPrefetchConfig {
UNINITIALIZED = 0,
PREFETCH_NONE = 1,
PREFETCH_ID_ONLY = 2,
PREFETCH_ALL = 3
};
std::string ourSetName() const;
bool usingReplSets() const;
/**
* Getters
*/
bool isSlave() const;
bool isMaster() const;
bool isFastSyncEnabled() const;
bool isAutoResyncEnabled() const;
bool isMajorityReadConcernEnabled() const;
Seconds getSlaveDelaySecs() const;
int getPretouch() const;
long long getOplogSizeBytes() const;
std::string getSource() const;
std::string getOnly() const;
std::string getReplSetString() const;
/**
* Note: _prefetchIndexMode is initialized to UNINITIALIZED by default.
* To check whether _prefetchIndexMode has been set to a valid value, call
* isPrefetchIndexModeSet().
*/
IndexPrefetchConfig getPrefetchIndexMode() const;
/**
* Checks that _prefetchIndexMode has been set.
*/
bool isPrefetchIndexModeSet() const;
/**
* Setters
*/
void setSlave(bool slave);
void setMaster(bool master);
void setFastSyncEnabled(bool fastSyncEnabled);
void setAutoResyncEnabled(bool autoResyncEnabled);
void setMajorityReadConcernEnabled(bool majorityReadConcernEnabled);
void setSlaveDelaySecs(int slaveDelay);
void setPretouch(int pretouch);
void setOplogSizeBytes(long long oplogSizeBytes);
void setSource(std::string source);
void setOnly(std::string only);
void setReplSetString(std::string replSetString);
void setPrefetchIndexMode(std::string prefetchIndexModeString);
private:
/**
* true means we are master and doing replication. If we are not writing to oplog, this won't
* be true.
*/
bool _master = false;
// replication slave? (possibly with slave)
bool _slave = false;
bool _fastSyncEnabled = false;
bool _autoResyncEnabled = false;
Seconds _slaveDelaySecs = Seconds(0);
long long _oplogSizeBytes = 0; // --oplogSize
/**
* True means that the majorityReadConcern feature is enabled, either explicitly by the user or
* implicitly by a requiring feature such as CSRS. It does not mean that the storage engine
* supports snapshots or that the snapshot thread is running. Those are tracked separately.
*/
bool _majorityReadConcernEnabled = false;
// for master/slave replication
std::string _source; // --source
std::string _only; // --only
int _pretouch = 0; // --pretouch for replication application (experimental)
std::string _replSetString; // --replSet[/<seedlist>]
// --indexPrefetch
IndexPrefetchConfig _prefetchIndexMode = IndexPrefetchConfig::UNINITIALIZED;
};
} // namespace repl
} // namespace mongo
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