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59 lines
1.5 KiB
C++
59 lines
1.5 KiB
C++
// balance.h
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/**
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* Copyright (C) 2008 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "../pch.h"
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#include "../util/background.h"
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#include "../client/dbclient.h"
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namespace mongo {
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class Balancer : public BackgroundJob {
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public:
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Balancer();
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void run();
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private:
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bool shouldIBalance( DBClientBase& conn );
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/**
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* @return true if everything is ok
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*/
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bool checkOIDs();
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/**
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* @return number of collections balanced
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*/
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int balance( DBClientBase& conn );
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bool balance( DBClientBase& conn , const string& ns , const BSONObj& data );
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void ping();
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void ping( DBClientBase& conn );
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BSONObj pickChunk( vector<BSONObj>& from, vector<BSONObj>& to );
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string _myid;
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time_t _started;
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int _balancedLastTime;
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};
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extern Balancer balancer;
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}
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