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// lasterror.h
/**
* Copyright (C) 2009 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/>.
*/
#pragma once
#include <boost/thread/tss.hpp>
#undef assert
#define assert xassert
namespace mongo {
class BSONObjBuilder;
class Message;
struct LastError {
string msg;
enum UpdatedExistingType { NotUpdate, True, False } updatedExisting;
int nObjects;
int nPrev;
bool valid;
bool overridenById;
void raiseError(const char *_msg) {
reset( true );
msg = _msg;
}
void recordUpdate( bool _updatedExisting, int nChanged ) {
reset( true );
nObjects = nChanged;
updatedExisting = _updatedExisting ? True : False;
}
void recordDelete( int nDeleted ) {
reset( true );
nObjects = nDeleted;
}
LastError() {
overridenById = false;
reset();
}
void reset( bool _valid = false ) {
msg.clear();
updatedExisting = NotUpdate;
nObjects = 0;
nPrev = 1;
valid = _valid;
}
void appendSelf( BSONObjBuilder &b );
static LastError noError;
};
typedef pair<int,LastError*> LastErrorStatus ;
typedef map<int,LastErrorStatus> LastErrorIDMap;
class LastErrorHolder {
public:
LastErrorHolder() : _id( 0 ){}
LastError * get( bool create = false );
void reset( LastError * le );
/**
* id of 0 means should use thread local management
*/
void setID( int id );
int getID();
void remove( int id );
void release();
void startRequest( Message& m , LastError * connectionOwned = 0 );
private:
ThreadLocalInt _id;
boost::thread_specific_ptr<LastError> _tl;
LastErrorIDMap _ids;
};
extern LastErrorHolder lastError;
inline void raiseError(const char *msg) {
LastError *le = lastError.get();
if ( le == 0 ) {
DEV log() << "warning: lastError==0 can't report:" << msg << '\n';
return;
}
le->raiseError(msg);
}
inline void recordUpdate( bool updatedExisting, int nChanged ) {
LastError *le = lastError.get();
if ( le )
le->recordUpdate( updatedExisting, nChanged );
}
inline void recordDelete( int nDeleted ) {
LastError *le = lastError.get();
if ( le )
le->recordDelete( nDeleted );
}
} // namespace mongo
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