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// top.cpp
/*
* Copyright (C) 2010 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 "pch.h"
#include "top.h"
#include "../../util/net/message.h"
#include "../commands.h"
namespace mongo {
Top::UsageData::UsageData( const UsageData& older , const UsageData& newer ) {
// this won't be 100% accurate on rollovers and drop(), but at least it won't be negative
time = (newer.time >= older.time) ? (newer.time - older.time) : newer.time;
count = (newer.count >= older.count) ? (newer.count - older.count) : newer.count;
}
Top::CollectionData::CollectionData( const CollectionData& older , const CollectionData& newer )
: total( older.total , newer.total ) ,
readLock( older.readLock , newer.readLock ) ,
writeLock( older.writeLock , newer.writeLock ) ,
queries( older.queries , newer.queries ) ,
getmore( older.getmore , newer.getmore ) ,
insert( older.insert , newer.insert ) ,
update( older.update , newer.update ) ,
remove( older.remove , newer.remove ),
commands( older.commands , newer.commands ) {
}
void Top::record( const string& ns , int op , int lockType , long long micros , bool command ) {
if ( ns[0] == '?' )
return;
//cout << "record: " << ns << "\t" << op << "\t" << command << endl;
scoped_lock lk(_lock);
if ( ( command || op == dbQuery ) && ns == _lastDropped ) {
_lastDropped = "";
return;
}
CollectionData& coll = _usage[ns];
_record( coll , op , lockType , micros , command );
_record( _global , op , lockType , micros , command );
}
void Top::_record( CollectionData& c , int op , int lockType , long long micros , bool command ) {
c.total.inc( micros );
if ( lockType > 0 )
c.writeLock.inc( micros );
else if ( lockType < 0 )
c.readLock.inc( micros );
switch ( op ) {
case 0:
// use 0 for unknown, non-specific
break;
case dbUpdate:
c.update.inc( micros );
break;
case dbInsert:
c.insert.inc( micros );
break;
case dbQuery:
if ( command )
c.commands.inc( micros );
else
c.queries.inc( micros );
break;
case dbGetMore:
c.getmore.inc( micros );
break;
case dbDelete:
c.remove.inc( micros );
break;
case dbKillCursors:
break;
case opReply:
case dbMsg:
log() << "unexpected op in Top::record: " << op << endl;
break;
default:
log() << "unknown op in Top::record: " << op << endl;
}
}
void Top::collectionDropped( const string& ns ) {
//cout << "collectionDropped: " << ns << endl;
scoped_lock lk(_lock);
_usage.erase(ns);
_lastDropped = ns;
}
void Top::cloneMap(Top::UsageMap& out) const {
scoped_lock lk(_lock);
out = _usage;
}
void Top::append( BSONObjBuilder& b ) {
scoped_lock lk( _lock );
_appendToUsageMap( b , _usage );
}
void Top::_appendToUsageMap( BSONObjBuilder& b , const UsageMap& map ) const {
for ( UsageMap::const_iterator i=map.begin(); i!=map.end(); i++ ) {
BSONObjBuilder bb( b.subobjStart( i->first ) );
const CollectionData& coll = i->second;
_appendStatsEntry( b , "total" , coll.total );
_appendStatsEntry( b , "readLock" , coll.readLock );
_appendStatsEntry( b , "writeLock" , coll.writeLock );
_appendStatsEntry( b , "queries" , coll.queries );
_appendStatsEntry( b , "getmore" , coll.getmore );
_appendStatsEntry( b , "insert" , coll.insert );
_appendStatsEntry( b , "update" , coll.update );
_appendStatsEntry( b , "remove" , coll.remove );
_appendStatsEntry( b , "commands" , coll.commands );
bb.done();
}
}
void Top::_appendStatsEntry( BSONObjBuilder& b , const char * statsName , const UsageData& map ) const {
BSONObjBuilder bb( b.subobjStart( statsName ) );
bb.appendNumber( "time" , map.time );
bb.appendNumber( "count" , map.count );
bb.done();
}
class TopCmd : public Command {
public:
TopCmd() : Command( "top", true ) {}
virtual bool slaveOk() const { return true; }
virtual bool adminOnly() const { return true; }
virtual LockType locktype() const { return READ; }
virtual void help( stringstream& help ) const { help << "usage by collection, in micros "; }
virtual bool run(const string& , BSONObj& cmdObj, int, string& errmsg, BSONObjBuilder& result, bool fromRepl) {
{
BSONObjBuilder b( result.subobjStart( "totals" ) );
b.append( "note" , "all times in microseconds" );
Top::global.append( b );
b.done();
}
return true;
}
} topCmd;
Top Top::global;
}
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