/*
- Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic 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 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
+
/** @file src/lib/encode_server_finder.h
* @brief EncodeServerFinder class.
*/
-#include "signaller.h"
-#include "encode_server_description.h"
+
#include "config.h"
+#include "encode_server_description.h"
#include "exception_store.h"
+#include "signaller.h"
#include <boost/signals2.hpp>
#include <boost/thread/condition.hpp>
+
class Socket;
+
+/** @class EncodeServerFinder
+ * @brief Locater of encoding servers.
+ *
+ * This class finds active (i.e. responding) encode servers. Depending on
+ * configuration it finds servers by:
+ *
+ * 1. broadcasting a request to the local subnet and
+ * 2. checking to see if any of the configured server hosts are up.
+ */
class EncodeServerFinder : public Signaller, public ExceptionStore
{
public:
static EncodeServerFinder* instance ();
static void drop ();
- void disable () {
- _disabled = true;
- }
-
- bool disabled () const {
- return _disabled;
- }
+ void stop ();
std::list<EncodeServerDescription> servers () const;
void search_thread ();
void listen_thread ();
- bool server_found (std::string) const;
void start_accept ();
- void handle_accept (boost::system::error_code ec, boost::shared_ptr<Socket> socket);
+ void handle_accept (boost::system::error_code ec);
void config_changed (Config::Property what);
- bool _disabled;
-
/** Thread to periodically issue broadcasts and requests to find encoding servers */
- boost::thread* _search_thread;
+ boost::thread _search_thread;
/** Thread to listen to the responses from servers */
- boost::thread* _listen_thread;
+ boost::thread _listen_thread;
+ /** Available servers */
std::list<EncodeServerDescription> _servers;
+ /** Mutex for _servers */
mutable boost::mutex _servers_mutex;
boost::asio::io_service _listen_io_service;
- boost::shared_ptr<boost::asio::ip::tcp::acceptor> _listen_acceptor;
+ std::shared_ptr<boost::asio::ip::tcp::acceptor> _listen_acceptor;
bool _stop;
boost::condition _search_condition;
boost::mutex _search_condition_mutex;
+ std::shared_ptr<Socket> _accept_socket;
+
static EncodeServerFinder* _instance;
};