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[z.facultad/75.42/plaqui.git] / Server / src / server.cpp
index c0d0341bf15c08135eb3400e56b6d7db083ec2db..692db97a0228d378b6e8271b558dde909be82a81 100644 (file)
 // $Id$
 //
 
 // $Id$
 //
 
-#include "server.h"
+#include "plaqui/server/server.h"
+#include "plaqui/server/string.h"
+#include "plaqui/server/connection.h"
+#include "plaqui/server/controlserver.h"
+#include <sigc++/class_slot.h>
+#include <glibmm/timer.h>
+#include <sstream>
+#include <exception>
 #ifdef DEBUG
 #      include <iostream>
 #endif // DEBUG
 
 #ifdef DEBUG
 #      include <iostream>
 #endif // DEBUG
 
-using namespace Plaqui;
+using namespace std;
 
 
-Server::Server(int port):
-               socket(sockbuf::sock_stream) {
-       socket.bind(port);
+namespace PlaQui {
+
+namespace Server {
+
+Server::~Server(void) {
 #ifdef DEBUG
 #ifdef DEBUG
-       std::cerr << "Escuchando en " << socket.localhost() <<
-               ":" << socket.localport() << "." << std::endl;
+       cerr << __FILE__ << "(" << __LINE__ << ")"
+               <<  ": destructor." << endl;
 #endif // DEBUG
 #endif // DEBUG
-       socket.listen();
+       // Mando a terminar todas las plantas.
+       plants_mutex.lock();
+       for (PlantList::iterator i = plants.begin(); i != plants.end(); i++) {
+               i->second->finish();
+       }
+       PlantList::size_type count = plants.size();
+       plants_mutex.unlock();
+       // Espero que terminen realmente.
+       while (count) {
+               Glib::usleep(10000); // 10 milisegundos
+               plants_mutex.lock();
+               count = plants.size();
+               plants_mutex.unlock();
+       }
 }
 
 }
 
-bool Server::start_transmission(std::string host, int port) {
-       // TODO
-       return false;
+Server::Server(const Connection::Port& port)
+               throw(sockerr): TCPServer(port) {
+#ifdef DEBUG
+       cerr << __FILE__ << "(" << __LINE__ << ")"
+               <<  ": port = " << port << endl;
+#endif // DEBUG
 }
 
 }
 
-bool Server::stop_transmission(std::string host, int port) {
-       // TODO
+bool Server::add_plant(const string& name, const string& filename) {
+       Glib::Mutex::Lock lock(plants_mutex);
+       if (plants.find(name) == plants.end()) { // No existe
+               plants[name] = new Plant(filename);
+               plants[name]->signal_finished().connect(SigC::bind(
+                               SigC::slot_class(*this, &Server::on_plant_finished),
+                               name.c_str()));
+               plants[name]->run();
+               return true;
+       }
        return false;
 }
 
        return false;
 }
 
-void Server::real_run(void) {
-       // FIXME se tiene que ir a la clase para poder frenarlo desde afuera.
-       bool stop = false;
-       ControlServer* control_server;
-       while (!stop) {
-               control_server = new ControlServer(socket.accept());
-               controllers.push_back(control_server);
-               control_server->run();
+Connection* Server::new_connection(const sockbuf::sockdesc& sd) {
+#ifdef DEBUG
+       cerr << __FILE__ << "(" << __LINE__ << ")"
+               <<  ": new_connection(sd = " << sd.sock << ")"
+               << endl;
+#endif // DEBUG
+       ControlServer* connection = new ControlServer(sd);
+       connection->signal_command_received().connect(SigC::bind(
+                       SigC::slot_class(*this, &Server::on_control_command_received),
+                       connection));
+       return connection;
+}
+
+void Server::on_plant_finished(const char* plant) {
+#ifdef DEBUG
+       cerr << __FILE__ << "(" << __LINE__ << ")"
+               <<  ": on_plant_finished(plant_name = " << plant << endl;
+#endif // DEBUG
+       Glib::Mutex::Lock lock(plants_mutex);
+       plants.erase(plant);
+}
+
+void Server::on_control_command_received(const Command& command,
+               ControlServer* controlserver) {
+#ifdef DEBUG
+       cerr << __FILE__ << "(" << __LINE__ << ")"
+               <<  ": on_control_command_received(target = "
+               << command.get_target() << ", command = " << command.get_command()
+               << ", args = [" << String::join(command.get_args(), ", ") << "])"
+               << endl;
+#endif // DEBUG
+       Response* response;
+       if (command.get_target() == "server") {
+               if (command.get_command() == "info") {
+                       response = cmd_server_info();
+               } else if (command.get_command() == "stop") {
+                       response = new Response(Response::OK,
+                                       "El server se cerrará en instantes");
+                       // XXX - Sin mandar la respuesta enseguida podría ser que el server
+                       // cierre la conexión antes de mandar la respuesta. En las pruebas
+                       // esto nunca pasó.
+                       //response->headers["Content-Type"] = "text/xml; charset=iso-8859-1";
+                       //controlserver->send(*response);
+                       //delete response;
+                       finish();
+                       //return;
+               } else {
+                       response = new Response(Response::INVALID_COMMAND,
+                                       command.get_command() + " es un comando inválido para "
+                                       + "el destino 'server'");
+               }
+       } else if (command.get_target() == "connection") {
+               if (command.get_command() == "list") {
+                       response = cmd_connection_list();
+               } else if (command.get_command() == "stop") {
+                       response = cmd_connection_stop(command);
+               } else {
+                       response = new Response(Response::INVALID_COMMAND,
+                                       command.get_command() + " es un comando inválido para "
+                                       + "el destino 'connection'");
+               }
+       } else if (command.get_target() == "transmission") {
+               if (command.get_command() == "list") {
+                       response = cmd_transmission_list();
+               } else if (command.get_command() == "start") {
+                       response = cmd_transmission_start(command);
+               } else if (command.get_command() == "stop") {
+                       response = cmd_transmission_stop(command);
+               } else {
+                       response = new Response(Response::INVALID_COMMAND,
+                                       command.get_command() + " es un comando inválido para "
+                                       + "el destino 'transmission'");
+               }
+       } else if (command.get_target() == "plant") {
+               if (command.get_command() == "list") {
+                       response = cmd_plant_list();
+               } else if (command.get_command() == "get") {
+                       response = cmd_plant_get(command);
+               } else if (command.get_command() == "set") {
+                       response = cmd_plant_set(command);
+               } else if (command.get_command() == "set_frequency") {
+                       response = cmd_plant_set_frequency(command);
+               } else if (command.get_command() == "start") {
+                       response = cmd_plant_start(command);
+               } else if (command.get_command() == "stop") {
+                       response = cmd_plant_stop(command);
+               } else if (command.get_command() == "remove") {
+                       response = cmd_plant_remove(command);
+               } else {
+                       response = new Response(Response::INVALID_COMMAND,
+                                       command.get_command() + " es un comando inválido para "
+                                       + "el destino 'plant'");
+               }
+       } else {
+               response = new Response(Response::INVALID_TARGET, command.get_target()
+                               + " es un destino inválido");
+       }
+       controlserver->send(*response);
+       delete response;
+}
+
+Response* Server::cmd_server_info(void) const {
+       stringstream xml;
+       xml << "<serverstatus>" << endl;
+       xml << "\t<version>" VERSION "</version>" << endl;
+       xml << "\t<authors>" << endl;
+       xml << "\t\t<author>Nicolás Dimov</author>" << endl;
+       xml << "\t\t<author>Leandro Lucarella</author>" << endl;
+       xml << "\t\t<author>Ricardo Markiewicz</author>" << endl;
+       xml << "\t</authors>" << endl;
+       xml << "</serverstatus>" << endl;
+       return new Response(xml.str());
+}
+
+Response* Server::cmd_connection_list(void) {
+       // TODO implementar con lista genérica.
+       TCPServer::ConnectionInfoList cil = get_connected();
+       stringstream xml;
+       xml << "<list type=\"connection\">" << endl;
+       for (TCPServer::ConnectionInfoList::const_iterator i = cil.begin();
+                       i != cil.end(); i++) {
+               xml << "\t<row>" << endl;
+               xml << "\t\t<host>" << i->host << "</host>" << endl;
+               xml << "\t\t<port>" << i->port << "</port>" << endl;
+               xml << "\t</row>" << endl;
+       }
+       xml << "</list>" << endl;
+       return new Response(xml.str());
+}
+
+Response* Server::cmd_connection_stop(const Command& command) {
+       const Command::Arguments& args = command.get_args();
+       Connection::Port port;
+       if (args.size() < 2) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'stop' del destino 'connection'");
+       } else if (disconnect(args[0], to(args[1], port))) {
+               return new Response(Response::OK, string("La conexión a ") + args[0]
+                               + ":" + args[1] + " se cerrará en instantes");
+       } else {
+               return new Response(Response::CONNECTION_NOT_FOUND,
+                               string("No existe una conexión a ") + args[0] + ":" + args[1]);
+       }
+}
+
+Response* Server::cmd_transmission_list(void) {
+       // TODO implementar con lista genérica.
+       stringstream xml;
+       xml << "<list type=\"transmission\">" << endl;
+/*FIXME        plants_mutex.lock();
+       for (PlantList::const_iterator i = plants.begin();
+                       i != plants.end(); i++) {
+               trans
+               xml << "       <li>" << (*i)->get_host() << ":"
+                       << (*i)->get_port() << " [<a href=\"/transmission/stop/"
+                       << (*i)->get_host() << "/" << (*i)->get_port()
+                       << "\">desconectar</a>]</li>" << endl;
+       }
+       transmissions_mutex.unlock();*/
+       xml << "</list>" << endl;
+       return new Response(xml.str());
+}
+
+Response* Server::cmd_transmission_start(const Command& command) {
+       const Command::Arguments& args = command.get_args();
+       if (args.size() < 3) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'start' del destino 'transmission'");
+       } else {
+               string plant = args[0];
+               string host = args[1];
+               Connection::Port port = to(args[2], port);
+               Glib::Mutex::Lock lock(plants_mutex);
+               PlantList::iterator p = plants.find(plant);
+               if (p == plants.end()) {
+                       return new Response(Response::PLANT_NOT_FOUND,
+                                       string("No existe la planta '") + plant + "'");
+               // FIXME - agregar chequeo de que la transmision a ese host:port no exista.
+               //         que use respuesta ALLREADY_EXISTS
+               } else if (plants[plant]->transmission_start(host, port)) {
+                       return new Response(Response::OK,
+                                       string("Se empieza a transmitir la planta '") + plant
+                                       + "' a " + host + ":" + String().from(port));
+               } else {
+                       return new Response(Response::ERROR_STARTING_TRANSMISSION,
+                                       string("Error al crear la transmisión a de la planta '")
+                                       + plant + "' a " + host + ":" + args[2]);
+               }
+       }
+}
+
+Response* Server::cmd_transmission_stop(const Command& command) {
+       const Command::Arguments& args = command.get_args();
+       if (args.size() < 2) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'stop' del destino 'transmission'");
+       } else {
+               const string& host = args[0];
+               Connection::Port port = to(args[1], port);
+               for (PlantList::iterator i = plants.begin(); i != plants.end(); i++) {
+                       // TODO - agregar chequeo para saber si existe una conexion (para
+                       // tirar error de que no hay conexion o de que no se pudo
+                       // desconectar.
+                       if (i->second->transmission_stop(host, port)) {
+                               return new Response(Response::OK,
+                                               string("La transmisión de la planta '") + i->first
+                                                       + "' a " + host + ":" + args[1]
+                                                       + " se cerrará en instantes");
+                       }
+               }
+               return new Response(Response::TRANSMISSION_NOT_FOUND,
+                               string("No existe una transmisión a ") + host + ":" + args[1]);
+       }
+}
+
+Response* Server::cmd_plant_list(void) {
+       // FIXME hacer con ResponseList
+       stringstream xml;
+       xml << "<list type=\"plant\">" << endl;
+       plants_mutex.lock();
+       for (PlantList::const_iterator i = plants.begin();
+                       i != plants.end(); i++) {
+               xml << "\t<row>" << endl;
+               xml << "\t\t<name>" << i->first << "</name>" << endl;
+               xml << "\t</row>" << endl;
+       }
+       plants_mutex.unlock();
+       xml << "</list>" << endl;
+       return new Response(xml.str());
+}
+
+Response* Server::cmd_plant_get(const Command& command) {
+       if (!command.get_args().size()) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'get' del destino 'plant'");
+       }
+       Glib::Mutex::Lock lock(plants_mutex);
+       string plant = command.get_args()[0];
+       if (plants.find(plant) == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + plant + "'");
+       }
+       string xml = plants[plant]->get_xml();
+       if (xml.length()) {
+               return new Response(xml);
+       } else {
+               return new Response(Response::ERROR_GETING_PLANT_XML,
+                               ("No se pudo obtener el XML de la planta '") + plant + "'");
+       }
+}
+
+Response* Server::cmd_plant_set(const Command& command) {
+       const Command::Arguments& args = command.get_args();
+       if (args.size() < 4) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'set' del destino 'plant'");
+       }
+       string plant = args[0];
+       string element = args[1];
+       string input = args[2];
+       if (input != "open") {
+               return new Response(Response::ELEMENT_INPUT_NOT_FOUND,
+                               string("El elemento '") + element + "' de la planta '" + plant
+                               + "' no tiene una entrada '" + input + "'");
+       }
+       string value = args[3];
+       Glib::Mutex::Lock lock(plants_mutex);
+       PlantList::iterator p = plants.find(plant);
+       if (p == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + plant + "'");
+       }
+       bool open = true;
+       if ((value == "false") || (value == "0") || (value == "off")
+                       || (value == "no")) {
+               open = false;
+       }
+       if (!plants[plant]->set_open(element, open)) {
+               return new Response(Response::ERROR_CHANGING_ELEMENT_INPUT,
+                               string("No se pudo cambiar la entrada '") + input
+                               + "' del elemento '" + element + "' de la planta '"
+                               + plant + "'");
+       }
+       return new Response(Response::OK,
+                       string("Se cambió la entrada '") + input + "' del elemento '"
+                       + element + "' de la planta '" + plant + "' a '" + value + "'");
+}
+
+Response* Server::cmd_plant_set_frequency(const Command& command) {
+       if (command.get_args().size() < 2) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'set_frequency' del destino 'plant'");
+       }
+       Glib::Mutex::Lock lock(plants_mutex);
+       const string name = command.get_args()[0];
+       if (plants.find(name) == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + name + "'");
        }
        }
+       unsigned hz;
+       to(command.get_args()[1], hz);
+       plants[name]->set_frequency(hz);
+       String shz;
+       shz.from(hz);
+       return new Response(Response::OK,
+                       string("Se cambió la frecuencia de refresco de la planta '") + name
+                       + "' a '" + shz + "' veces por segundo");
 }
 
 }
 
+Response* Server::cmd_plant_start(const Command& command) {
+       if (!command.get_args().size()) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'start' del destino 'plant'");
+       }
+       Glib::Mutex::Lock lock(plants_mutex);
+       const string name = command.get_args()[0];
+       if (plants.find(name) == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + name + "'");
+       }
+       plants[name]->set_paused(false);
+       return new Response(Response::OK,
+                       string("La planta '") + name + "' fue reanudada");
+}
+
+Response* Server::cmd_plant_stop(const Command& command) {
+       if (!command.get_args().size()) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'stop' del destino 'plant'");
+       }
+       Glib::Mutex::Lock lock(plants_mutex);
+       const string name = command.get_args()[0];
+       if (plants.find(name) == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + name + "'");
+       }
+       plants[name]->set_paused(true);
+       return new Response(Response::OK,
+                       string("La planta '") + name + "' fue pausada");
+}
+
+Response* Server::cmd_plant_remove(const Command& command) {
+       if (!command.get_args().size()) {
+               return new Response(Response::ARGUMENT_MISSING, "Faltan argumentos "
+                               " para el comando 'remove' del destino 'plant'");
+       }
+       Glib::Mutex::Lock lock(plants_mutex);
+       const string name = command.get_args()[0];
+       if (plants.find(name) == plants.end()) {
+               return new Response(Response::PLANT_NOT_FOUND,
+                               string("No existe la planta '") + name + "'");
+       }
+       plants[name]->finish();
+       return new Response(Response::OK,
+                       string("La planta '") + name + "' fue será removida del servidor "
+                       "en instantes");
+}
+
+} // namespace Server
+
+} // namespace PlaQui
+