virtual void process( Message& m , AbstractMessagingPort* port , LastError * le) {
while ( true ) {
if ( inShutdown() ) {
log() << "got request after shutdown()" << endl;
break;
}
lastError.startRequest( m , le );
DbResponse dbresponse;
try {
assembleResponse( m, dbresponse, port->remote() );
}
catch ( const ClockSkewException & ) {
log() << "ClockSkewException - shutting down" << endl;
exitCleanly( EXIT_CLOCK_SKEW );
}
if ( dbresponse.response ) {
port->reply(m, *dbresponse.response, dbresponse.responseTo);
if( dbresponse.exhaust ) {
MsgData *header = dbresponse.response->header();
QueryResult *qr = (QueryResult *) header;
long long cursorid = qr->cursorId;
if( cursorid ) {
verify( dbresponse.exhaust && *dbresponse.exhaust != 0 );
string ns = dbresponse.exhaust; // before reset() free's it...
m.reset();
BufBuilder b(512);
b.appendNum((int) 0 /*size set later in appendData()*/);
b.appendNum(header->id);
b.appendNum(header->responseTo);
b.appendNum((int) dbGetMore);
b.appendNum((int) 0);
b.appendStr(ns);
b.appendNum((int) 0); // ntoreturn
b.appendNum(cursorid);
m.appendData(b.buf(), b.len());
b.decouple();
DEV log() << "exhaust=true sending more" << endl;
beNice();
continue; // this goes back to top loop
}
}
}
break;
}
}
virtual void process( Message& m , AbstractMessagingPort* port , LastError * le) {
OperationContextImpl txn;
while ( true ) {
if ( inShutdown() ) {
log() << "got request after shutdown()" << endl;
break;
}
lastError.startRequest( m , le );
DbResponse dbresponse;
assembleResponse( &txn, m, dbresponse, port->remote() );
if ( dbresponse.response ) {
port->reply(m, *dbresponse.response, dbresponse.responseTo);
if( dbresponse.exhaustNS.size() > 0 ) {
MsgData *header = dbresponse.response->header();
QueryResult *qr = (QueryResult *) header;
long long cursorid = qr->cursorId;
if( cursorid ) {
verify( dbresponse.exhaustNS.size() && dbresponse.exhaustNS[0] );
string ns = dbresponse.exhaustNS; // before reset() free's it...
m.reset();
BufBuilder b(512);
b.appendNum((int) 0 /*size set later in appendData()*/);
b.appendNum(header->id);
b.appendNum(header->responseTo);
b.appendNum((int) dbGetMore);
b.appendNum((int) 0);
b.appendStr(ns);
b.appendNum((int) 0); // ntoreturn
b.appendNum(cursorid);
m.appendData(b.buf(), b.len());
b.decouple();
DEV log() << "exhaust=true sending more" << endl;
beNice();
continue; // this goes back to top loop
}
}
}
break;
}
}
/* we create one thread for each connection from an app server database.
app server will open a pool of threads.
todo: one day, asio...
*/
void connThread( MessagingPort * inPort )
{
TicketHolderReleaser connTicketReleaser( &connTicketHolder );
/* todo: move to Client object */
LastError *le = new LastError();
lastError.reset(le);
inPort->_logLevel = 1;
auto_ptr<MessagingPort> dbMsgPort( inPort );
Client& c = Client::initThread("conn", inPort);
try {
c.getAuthenticationInfo()->isLocalHost = dbMsgPort->farEnd.isLocalHost();
Message m;
while ( 1 ) {
if ( !dbMsgPort->recv(m) ) {
if( !cmdLine.quiet )
log() << "end connection " << dbMsgPort->farEnd.toString() << endl;
dbMsgPort->shutdown();
break;
}
sendmore:
if ( inShutdown() ) {
log() << "got request after shutdown()" << endl;
break;
}
lastError.startRequest( m , le );
DbResponse dbresponse;
if ( !assembleResponse( m, dbresponse, dbMsgPort->farEnd ) ) {
log() << curTimeMillis() % 10000 << " end msg " << dbMsgPort->farEnd.toString() << endl;
/* todo: we may not wish to allow this, even on localhost: very low priv accounts could stop us. */
if ( dbMsgPort->farEnd.isLocalHost() ) {
dbMsgPort->shutdown();
sleepmillis(50);
problem() << "exiting end msg" << endl;
dbexit(EXIT_CLEAN);
}
else {
log() << " (not from localhost, ignoring end msg)" << endl;
}
}
if ( dbresponse.response ) {
dbMsgPort->reply(m, *dbresponse.response, dbresponse.responseTo);
if( dbresponse.exhaust ) {
MsgData *header = dbresponse.response->header();
QueryResult *qr = (QueryResult *) header;
long long cursorid = qr->cursorId;
if( cursorid ) {
assert( dbresponse.exhaust && *dbresponse.exhaust != 0 );
string ns = dbresponse.exhaust; // before reset() free's it...
m.reset();
BufBuilder b(512);
b.appendNum((int) 0 /*size set later in appendData()*/);
b.appendNum(header->id);
b.appendNum(header->responseTo);
b.appendNum((int) dbGetMore);
b.appendNum((int) 0);
b.appendStr(ns);
b.appendNum((int) 0); // ntoreturn
b.appendNum(cursorid);
m.appendData(b.buf(), b.len());
b.decouple();
DEV log() << "exhaust=true sending more" << endl;
beNice();
goto sendmore;
}
}
}
m.reset();
}
}
catch ( AssertionException& e ) {
log() << "AssertionException in connThread, closing client connection" << endl;
log() << ' ' << e.what() << endl;
dbMsgPort->shutdown();
}
catch ( SocketException& ) {
problem() << "SocketException in connThread, closing client connection" << endl;
dbMsgPort->shutdown();
}
catch ( const ClockSkewException & ) {
exitCleanly( EXIT_CLOCK_SKEW );
}
catch ( std::exception &e ) {
problem() << "Uncaught std::exception: " << e.what() << ", terminating" << endl;
dbexit( EXIT_UNCAUGHT );
}
catch ( ... ) {
problem() << "Uncaught exception, terminating" << endl;
dbexit( EXIT_UNCAUGHT );
}
// thread ending...
{
Client * c = currentClient.get();
if( c ) c->shutdown();
}
globalScriptEngine->threadDone();
}
