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// message_server_port.cpp
/* Copyright 2009 10gen Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "pch.h"
#ifndef USE_ASIO
#include "message.h"
#include "message_server.h"
#include "../db/cmdline.h"
namespace mongo {
namespace pms {
MessagingPort * grab = 0;
MessageHandler * handler;
void threadRun(){
setThreadName( "conn" );
TicketHolderReleaser connTicketReleaser( &connTicketHolder );
assert( grab );
auto_ptr<MessagingPort> p( grab );
grab = 0;
string otherSide;
Message m;
try {
otherSide = p->farEnd.toString();
while ( 1 ){
m.reset();
if ( ! p->recv(m) ) {
if( !cmdLine.quiet )
log() << "end connection " << otherSide << endl;
p->shutdown();
break;
}
handler->process( m , p.get() );
}
}
catch ( const SocketException& ){
log() << "unclean socket shutdown from: " << otherSide << endl;
}
catch ( const std::exception& e ){
problem() << "uncaught exception (" << e.what() << ")(" << demangleName( typeid(e) ) <<") in PortMessageServer::threadRun, closing connection" << endl;
}
catch ( ... ){
problem() << "uncaught exception in PortMessageServer::threadRun, closing connection" << endl;
}
handler->disconnected( p.get() );
}
}
class PortMessageServer : public MessageServer , public Listener {
public:
PortMessageServer( const MessageServer::Options& opts, MessageHandler * handler ) :
Listener( opts.ipList, opts.port ){
uassert( 10275 , "multiple PortMessageServer not supported" , ! pms::handler );
pms::handler = handler;
}
virtual void accepted(MessagingPort * p) {
assert( ! pms::grab );
pms::grab = p;
if ( ! connTicketHolder.tryAcquire() ){
log() << "connection refused because too many open connections" << endl;
// TODO: would be nice if we notified them...
p->shutdown();
pms::grab = 0;
sleepmillis(2); // otherwise we'll hard loop
return;
}
try {
boost::thread thr( pms::threadRun );
while ( pms::grab ){
sleepmillis(1);
}
}
catch ( boost::thread_resource_error& ){
log() << "can't create new thread, closing connection" << endl;
p->shutdown();
pms::grab = 0;
sleepmillis(2);
}
}
void run(){
initAndListen();
}
};
MessageServer * createServer( const MessageServer::Options& opts , MessageHandler * handler ){
return new PortMessageServer( opts , handler );
}
}
#endif
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