videotools Code

--- a
+++ b/src/gnet/gmonitor.h
@@ -0,0 +1,96 @@
+//
+// Copyright (C) 2017 Graeme Walker
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// 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 General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+// ===
+///
+/// \file gmonitor.h
+///
+
+#ifndef G_GNET_MONITOR_H
+#define G_GNET_MONITOR_H
+
+#include "gdef.h"
+#include "gslot.h"
+#include "gnet.h"
+#include "gconnection.h"
+#include <iostream>
+#include <utility>
+
+namespace GNet
+{
+	class Monitor ;
+	class MonitorImp ;
+}
+
+/// \class GNet::Monitor
+/// A singleton for monitoring GNet::SimpleClient and GNet::ServerPeer 
+/// connections and for storing their TLS certificates.
+/// \see GNet::SimpleClient, GNet::ServerPeer
+/// 
+class GNet::Monitor
+{
+public:
+	Monitor() ;
+		///< Default constructor.
+
+	virtual ~Monitor() ;
+		///< Destructor.
+
+	static Monitor * instance() ;
+		///< Returns the singleton pointer. Returns null if none.
+
+	void addClient( const Connection & simple_client ) ;
+		///< Adds a client connection.
+
+	void removeClient( const Connection & simple_client ) ;
+		///< Removes a client connection.
+
+	void addServerPeer( const Connection & server_peer ) ;
+		///< Adds a server connection.
+
+	void removeServerPeer( const Connection & server_peer ) ;
+		///< Removes a server connection.
+
+	void report( std::ostream & stream ,
+		const std::string & line_prefix = std::string() ,
+		const std::string & eol = std::string("\n") ) const ;
+			///< Reports itself onto a stream.
+
+	void report( G::StringArray & out ) const ;
+			///< Reports itself into a three-column table.
+
+	std::pair<std::string,bool> findCertificate( const std::string & certificate ) ;
+		///< Returns a short id for the given certificate and a boolean
+		///< flag to indicate if it is a new certificate id that has 
+		///< not been returned before.
+
+	G::Slot::Signal2<std::string,std::string> & signal() ;
+		///< Provides a callback signal which can be connect()ed
+		///< to a slot.
+		///< 
+		///< the first is "in" or "out", and the second is 
+		///< "start" or "stop".
+
+private:
+	Monitor( const Monitor & ) ;
+	void operator=( const Monitor & ) ;
+
+private:
+	static Monitor * & pthis() ;
+	MonitorImp * m_imp ;
+	G::Slot::Signal2<std::string,std::string> m_signal ;
+} ;
+
+#endif