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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// stat_util.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 "../db/jsobj.h"
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namespace mongo {
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/**
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* static methods useful for computing status from serverStatus type things
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*/
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class StatUtil {
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public:
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/**
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* @param seconds - seconds between calls to serverStatus
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* @param all - show all fields
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*/
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StatUtil( double seconds = 1 , bool all = false );
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/**
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* @param a older serverStatus
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* @param b newer serverStatus
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*/
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BSONObj doRow( const BSONObj& a , const BSONObj& b );
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double getSeconds() const { return _seconds; }
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bool getAll() const { return _all; }
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void setSeconds( double seconds ) { _seconds = seconds; }
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void setAll( bool all ) { _all = all; }
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private:
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double percent( const char * outof , const char * val , const BSONObj& a , const BSONObj& b );
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double diff( const string& name , const BSONObj& a , const BSONObj& b );
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void _appendMem( BSONObjBuilder& result , const string& name , unsigned width , double sz );
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void _appendNet( BSONObjBuilder& result , const string& name , double diff );
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template<typename T>
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void _append( BSONObjBuilder& result , const string& name , unsigned width , const T& t ) {
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if ( name.size() > width )
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width = name.size();
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result.append( name , BSON( "width" << (int)width << "data" << t ) );
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}
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// -------
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double _seconds;
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bool _all;
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};
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}
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