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/**
*    Copyright (C) 2008 10gen 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;

bool anyReplEnabled();

/* replication slave? (possibly with slave)
   --slave cmd line setting -> SimpleSlave
*/
typedef enum { NotSlave = 0, SimpleSlave } SlaveTypes;

class ReplSettings {
public:
    SlaveTypes slave;

    /** true means we are master and doing replication.  if we are not writing to oplog, this won't be true. */
    bool master;

    bool fastsync;

    bool autoresync;

    int slavedelay;

    long long oplogSize;  // --oplogSize

    // for master/slave replication
    std::string source;  // --source
    std::string only;    // --only
    int pretouch;        // --pretouch for replication application (experimental)

    std::string replSet;  // --replSet[/<seedlist>]
    std::string ourSetName() const {
        std::string setname;
        size_t sl = replSet.find('/');
        if (sl == std::string::npos)
            return replSet;
        return replSet.substr(0, sl);
    }
    bool usingReplSets() const {
        return !replSet.empty();
    }

    std::string rsIndexPrefetch;  // --indexPrefetch

    ReplSettings()
        : slave(NotSlave),
          master(false),
          fastsync(),
          autoresync(false),
          slavedelay(),
          oplogSize(0),
          pretouch(0) {}

    // TODO(spencer): Remove explicit copy constructor after we no longer have mutable state
    // in ReplSettings.
    ReplSettings(const ReplSettings& other)
        : slave(other.slave),
          master(other.master),
          fastsync(other.fastsync),
          autoresync(other.autoresync),
          slavedelay(other.slavedelay),
          oplogSize(other.oplogSize),
          source(other.source),
          only(other.only),
          pretouch(other.pretouch),
          replSet(other.replSet),
          rsIndexPrefetch(other.rsIndexPrefetch) {}

    ReplSettings& operator=(const ReplSettings& other) {
        if (this == &other)
            return *this;

        slave = other.slave;
        master = other.master;
        fastsync = other.fastsync;
        autoresync = other.autoresync;
        slavedelay = other.slavedelay;
        oplogSize = other.oplogSize;
        source = other.source;
        only = other.only;
        pretouch = other.pretouch;
        replSet = other.replSet;
        rsIndexPrefetch = other.rsIndexPrefetch;
        return *this;
    }
};

}  // namespace repl
}  // namespace mongo