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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/>.
*
* 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kDefault
#include "mongo/platform/basic.h"
#include "mongo/db/stats/top.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/service_context.h"
#include "mongo/util/log.h"
#include "mongo/util/net/message.h"
namespace mongo {
using std::endl;
using std::string;
using std::stringstream;
using std::vector;
namespace {
const auto getTop = ServiceContext::declareDecoration<Top>();
} // namespace
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 ) {
}
// static
Top& Top::get(ServiceContext* service) {
return getTop(service);
}
void Top::record( StringData ns, int op, int lockType, long long micros, bool command ) {
if ( ns[0] == '?' )
return;
//cout << "record: " << ns << "\t" << op << "\t" << command << endl;
SimpleMutex::scoped_lock lk(_lock);
if ( ( command || op == dbQuery ) && ns == _lastDropped ) {
_lastDropped = "";
return;
}
CollectionData& coll = _usage[ns];
_record( coll, 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:
case dbCommandReply:
log() << "unexpected op in Top::record: " << op << endl;
break;
case dbCommand:
c.commands.inc(micros);
break;
default:
log() << "unknown op in Top::record: " << op << endl;
}
}
void Top::collectionDropped( StringData ns ) {
SimpleMutex::scoped_lock lk(_lock);
_usage.erase(ns);
_lastDropped = ns.toString();
}
void Top::cloneMap(Top::UsageMap& out) const {
SimpleMutex::scoped_lock lk(_lock);
out = _usage;
}
void Top::append( BSONObjBuilder& b ) {
SimpleMutex::scoped_lock lk( _lock );
_appendToUsageMap( b, _usage );
}
void Top::_appendToUsageMap( BSONObjBuilder& b, const UsageMap& map ) const {
// pull all the names into a vector so we can sort them for the user
vector<string> names;
for ( UsageMap::const_iterator i = map.begin(); i != map.end(); ++i ) {
names.push_back( i->first );
}
std::sort( names.begin(), names.end() );
for ( size_t i=0; i<names.size(); i++ ) {
BSONObjBuilder bb( b.subobjStart( names[i] ) );
const CollectionData& coll = map.find(names[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();
}
}
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