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// stat_util.cpp
/**
* 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/>.
*/
#include "stat_util.h"
#include "../util/mongoutils/str.h"
using namespace mongoutils;
namespace mongo {
StatUtil::StatUtil( double seconds , bool all ) :
_seconds( seconds ) ,
_all( all )
{
}
bool StatUtil::_in( const BSONElement& me , const BSONElement& arr ) {
if ( me.type() != String || arr.type() != Array )
return false;
string s = me.String();
BSONForEach(e, arr.Obj()) {
if ( e.type() == String && s == e.String() )
return true;
}
return false;
}
BSONObj StatUtil::doRow( const BSONObj& a , const BSONObj& b ) {
BSONObjBuilder result;
bool isMongos = b["shardCursorType"].type() == Object; // TODO: should have a better check
if ( a["opcounters"].isABSONObj() && b["opcounters"].isABSONObj() ) {
BSONObj ax = a["opcounters"].embeddedObject();
BSONObj bx = b["opcounters"].embeddedObject();
BSONObj ar = a["opcountersRepl"].isABSONObj() ? a["opcountersRepl"].embeddedObject() : BSONObj();
BSONObj br = b["opcountersRepl"].isABSONObj() ? b["opcountersRepl"].embeddedObject() : BSONObj();
BSONObjIterator i( bx );
while ( i.more() ) {
BSONElement e = i.next();
if ( ar.isEmpty() || br.isEmpty() ) {
_append( result , e.fieldName() , 6 , (int)diff( e.fieldName() , ax , bx ) );
}
else {
string f = e.fieldName();
int m = (int)diff( f , ax , bx );
int r = (int)diff( f , ar , br );
string myout;
if ( f == "command" ) {
myout = str::stream() << m << "|" << r;
}
else if ( f == "getmore" ) {
myout = str::stream() << m;
}
else if ( m && r ) {
// this is weird...
myout = str::stream() << m << "|" << r;
}
else if ( m ) {
myout = str::stream() << m;
}
else if ( r ) {
myout = str::stream() << "*" << r;
}
else {
myout = "*0";
}
_append( result , f , 6 , myout );
}
}
}
if ( b["backgroundFlushing"].type() == Object ) {
BSONObj ax = a["backgroundFlushing"].embeddedObject();
BSONObj bx = b["backgroundFlushing"].embeddedObject();
_append( result , "flushes" , 6 , (int)diff( "flushes" , ax , bx ) );
}
if ( b.getFieldDotted("mem.supported").trueValue() ) {
BSONObj bx = b["mem"].embeddedObject();
BSONObjIterator i( bx );
if (!isMongos)
_appendMem( result , "mapped" , 6 , bx["mapped"].numberInt() );
_appendMem( result , "vsize" , 6 , bx["virtual"].numberInt() );
_appendMem( result , "res" , 6 , bx["resident"].numberInt() );
if ( !isMongos && _all )
_appendMem( result , "non-mapped" , 6 , bx["virtual"].numberInt() - bx["mapped"].numberInt() );
}
if ( b["extra_info"].type() == Object ) {
BSONObj ax = a["extra_info"].embeddedObject();
BSONObj bx = b["extra_info"].embeddedObject();
if ( ax["page_faults"].type() || ax["page_faults"].type() )
_append( result , "faults" , 6 , (int)diff( "page_faults" , ax , bx ) );
}
if (!isMongos) {
_append( result , "locked %" , 8 , percent( "globalLock.totalTime" , "globalLock.lockTime" , a , b ) );
_append( result , "idx miss %" , 8 , percent( "indexCounters.btree.accesses" , "indexCounters.btree.misses" , a , b ) );
}
if ( b.getFieldDotted( "globalLock.currentQueue" ).type() == Object ) {
int r = b.getFieldDotted( "globalLock.currentQueue.readers" ).numberInt();
int w = b.getFieldDotted( "globalLock.currentQueue.writers" ).numberInt();
stringstream temp;
temp << r << "|" << w;
_append( result , "qr|qw" , 9 , temp.str() );
}
if ( b.getFieldDotted( "globalLock.activeClients" ).type() == Object ) {
int r = b.getFieldDotted( "globalLock.activeClients.readers" ).numberInt();
int w = b.getFieldDotted( "globalLock.activeClients.writers" ).numberInt();
stringstream temp;
temp << r << "|" << w;
_append( result , "ar|aw" , 7 , temp.str() );
}
if ( a["network"].isABSONObj() && b["network"].isABSONObj() ) {
BSONObj ax = a["network"].embeddedObject();
BSONObj bx = b["network"].embeddedObject();
_appendNet( result , "netIn" , diff( "bytesIn" , ax , bx ) );
_appendNet( result , "netOut" , diff( "bytesOut" , ax , bx ) );
}
_append( result , "conn" , 5 , b.getFieldDotted( "connections.current" ).numberInt() );
if ( b["repl"].type() == Object ) {
BSONObj x = b["repl"].embeddedObject();
bool isReplSet = x["setName"].type() == String;
stringstream ss;
if ( isReplSet ) {
string setName = x["setName"].String();
_append( result , "set" , setName.size() , setName );
}
if ( x["ismaster"].trueValue() )
ss << "PRI";
else if ( x["secondary"].trueValue() )
ss << "SEC";
else if ( x["isreplicaset"].trueValue() )
ss << "REC";
else if ( x["arbiterOnly"].trueValue() )
ss << "ARB";
else if ( _in( x["me"] , x["passives"] ) )
ss << "PSV";
else if ( isReplSet )
ss << "UNK";
else
ss << "SLV";
_append( result , "repl" , 4 , ss.str() );
}
else if ( isMongos ) {
_append( result , "repl" , 4 , "RTR" );
}
{
struct tm t;
time_t_to_Struct( time(0), &t , true );
stringstream temp;
temp << setfill('0') << setw(2) << t.tm_hour
<< ":"
<< setfill('0') << setw(2) << t.tm_min
<< ":"
<< setfill('0') << setw(2) << t.tm_sec;
_append( result , "time" , 10 , temp.str() );
}
return result.obj();
}
double StatUtil::percent( const char * outof , const char * val , const BSONObj& a , const BSONObj& b ) {
double x = ( b.getFieldDotted( val ).number() - a.getFieldDotted( val ).number() );
double y = ( b.getFieldDotted( outof ).number() - a.getFieldDotted( outof ).number() );
if ( y == 0 )
return 0;
double p = x / y;
p = (double)((int)(p * 1000)) / 10;
return p;
}
double StatUtil::diff( const string& name , const BSONObj& a , const BSONObj& b ) {
BSONElement x = a.getFieldDotted( name.c_str() );
BSONElement y = b.getFieldDotted( name.c_str() );
if ( ! x.isNumber() || ! y.isNumber() )
return -1;
return ( y.number() - x.number() ) / _seconds;
}
void StatUtil::_appendNet( BSONObjBuilder& result , const string& name , double diff ) {
// I think 1000 is correct for megabit, but I've seen conflicting things (ERH 11/2010)
const double div = 1000;
string unit = "b";
if ( diff >= div ) {
unit = "k";
diff /= div;
}
if ( diff >= div ) {
unit = "m";
diff /= div;
}
if ( diff >= div ) {
unit = "g";
diff /= div;
}
string out = str::stream() << (int)diff << unit;
_append( result , name , 6 , out );
}
void StatUtil::_appendMem( BSONObjBuilder& result , const string& name , unsigned width , double sz ) {
string unit = "m";
if ( sz > 1024 ) {
unit = "g";
sz /= 1024;
}
if ( sz >= 1000 ) {
string s = str::stream() << (int)sz << unit;
_append( result , name , width , s );
return;
}
stringstream ss;
ss << setprecision(3) << sz << unit;
_append( result , name , width , ss.str() );
}
}
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