main.cpp

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/*
 * main.cpp
 *
 * Copyright (C) 2007-2009  Thomas A. Vaughan
 * All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THOMAS A. VAUGHAN ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THOMAS A. VAUGHAN BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * Entry point for the aesop server.  Uses the aesop-srv library.
 */

// includes --------------------------------------------------------------------
#include <signal.h>

#include "cmdline/cmdline.h"    // command-line parsing
#include "aesop-srv/aesop-srv.h"        // server object
#include "datahash/datahash_text.h"
#include "mapzone/mapzone.h"    // reference implementation of maps/zones
#include "perf/perf.h"
#include "physics-loader/physics-loader.h"
#include "srv-game-logic/srv-game-logic.h"




static smart_ptr<aesop::Server> s_server;       // the aesop server object


//
//      static helper methods
//

static void
signalHandlerHUP
(
IN int signal
)
{
        if (s_server) {
                int retval = 3;
                s_server->requestStopTS(retval);
        }
}



static void
initializeServer
(
IN const char * config_file
)
{
        perf::Timer timer("initializeServer");
        ASSERT(config_file, "null");

        // register our reference map implementation
        //   (server object shouldn't know about map implementations)
        smart_ptr<aesop::MapFormatReader> reader =
            mapzone::getMapFormatReader();
        ASSERT(reader, "failed to create basic map reader");
        aesop::registerMapFormatReader(reader);

        // register our physics loader
        smart_ptr<aesop::TypeComponentLoader> physics =
            aesop::getPhysicsLoader();
        ASSERT(physics, "failed to create physics loader");
        aesop::registerTypeComponentLoader(physics);
        DPRINTF("Just registered physics loader!");

        // load server config file
        smart_ptr<Datahash> server_params =
            readHashFromTextFile(config_file);
        ASSERT(server_params, "Failed to read server parameters");

        // create the server-side game logic
        smart_ptr<aesop::ServerGameLogic> gameLogic =
            aesop::createServerGameLogic();
        ASSERT(gameLogic, "Failed to create game logic object");

        // create server object
        s_server = aesop::Server::create(server_params, gameLogic);
        ASSERT(s_server, "failed to create server?");
}



//
//      entry point
//

int
main
(
IN int argc,
IN const char * argv[]
)
{
        smart_ptr<CommandLine> cmd = CommandLine::create(argc, argv);
        ASSERT(cmd, "failed to create command-line parser");

        const char * srv_config_file = getSingleKeyValue(cmd, "config-file",
            true, "file that contains aesop server operational config");
        ASSERT(srv_config_file, "null");

        // add a signal handler...
        struct sigaction sigact;
        sigact.sa_handler = signalHandlerHUP;
        sigact.sa_flags = 0;
        ASSERT(!sigaction(SIGHUP, &sigact, NULL),
            "Failed to register handler for SIGHUP");
        ASSERT(!sigaction(SIGINT, &sigact, NULL),
            "Failed to register handler for SIGINT");
        ASSERT(!sigaction(SIGTERM, &sigact, NULL),
            "Failed to register handler for SIGTERM");

        int retval = 0;
        try {
                perf::Timer timer("aesop-server-main");

                // initialize
                initializeServer(srv_config_file);
                ASSERT(s_server, "should have server now!");

                // actually run
                retval = s_server->exec();

        } catch (std::exception& e) {
                DPRINTF("Caught exception: %s", e.what());
                retval = 1;
        } catch (...) {
                DPRINTF("Caught unknown exception!");
                retval = 2;
        }

        std::string summary;
        perf::getTimingSummary(summary);
        DPRINTF("Timers:\n%s", summary.c_str());

        return retval;
}