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/*
This file is part of GNUnet.
(C) 2011 Christian Grothoff (and other contributing authors)
GNUnet 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, or (at your
option) any later version.
GNUnet 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 GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file ats/gnunet-service-ats.c
* @brief ats service
* @author Matthias Wachs
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet-service-ats.h"
#include "gnunet-service-ats_addresses.h"
#include "gnunet-service-ats_connectivity.h"
#include "gnunet-service-ats_performance.h"
#include "gnunet-service-ats_scheduling.h"
#include "gnunet-service-ats_reservations.h"
#include "ats.h"
/**
* Handle for statistics.
*/
struct GNUNET_STATISTICS_Handle *GSA_stats;
/**
* Handle to the ATS server.
*/
static struct GNUNET_SERVER_Handle *GSA_server;
/**
* We have received a `struct ClientStartMessage` from a client. Find
* out which type of client it is and notify the respective subsystem.
*
* @param cls closure, unused
* @param client handle to the client
* @param message the start message
*/
static void
handle_ats_start (void *cls,
struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
const struct ClientStartMessage *msg =
(const struct ClientStartMessage *) message;
enum StartFlag flag;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received `%s' message\n",
"ATS_START");
flag = ntohl (msg->start_flag);
switch (flag)
{
case START_FLAG_SCHEDULING:
if (GNUNET_OK != GAS_scheduling_add_client (client))
{
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
break;
case START_FLAG_PERFORMANCE_WITH_PIC:
GAS_performance_add_client (client, flag);
break;
case START_FLAG_PERFORMANCE_NO_PIC:
GAS_performance_add_client (client, flag);
break;
case START_FLAG_CONNECTION_SUGGESTION:
/* This client won't receive messages from us, no need to 'add' */
break;
default:
GNUNET_break (0);
GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
return;
}
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
/**
* A client disconnected from us. Tear down the local client
* record.
*
* @param cls unused
* @param client handle of the client
*/
static void
client_disconnect_handler (void *cls,
struct GNUNET_SERVER_Client *client)
{
if (NULL == client)
return;
GAS_scheduling_remove_client (client);
GAS_performance_remove_client (client);
}
/**
* Task run during shutdown.
*
* @param cls unused
* @param tc unused
*/
static void
cleanup_task (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
GAS_addresses_done ();
GAS_scheduling_done ();
GAS_performance_done ();
GAS_reservations_done ();
GNUNET_SERVER_disconnect_notify_cancel (GSA_server,
&client_disconnect_handler,
NULL);
if (NULL != GSA_stats)
{
GNUNET_STATISTICS_destroy (GSA_stats, GNUNET_NO);
GSA_stats = NULL;
}
}
/**
* Process template requests.
*
* @param cls closure
* @param server the initialized server
* @param cfg configuration to use
*/
static void
run (void *cls,
struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
{&handle_ats_start, NULL,
GNUNET_MESSAGE_TYPE_ATS_START,
sizeof (struct ClientStartMessage)},
{&GAS_handle_request_address, NULL,
GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS,
sizeof (struct RequestAddressMessage)},
{&GAS_handle_request_address_cancel, NULL,
GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS_CANCEL,
sizeof (struct RequestAddressMessage)},
{&GAS_handle_request_address_list, NULL,
GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_REQUEST,
sizeof (struct AddressListRequestMessage)},
{&GAS_handle_address_add, NULL,
GNUNET_MESSAGE_TYPE_ATS_ADDRESS_ADD, 0},
{&GAS_handle_address_update, NULL,
GNUNET_MESSAGE_TYPE_ATS_ADDRESS_UPDATE, 0},
{&GAS_handle_address_destroyed, NULL,
GNUNET_MESSAGE_TYPE_ATS_ADDRESS_DESTROYED,
sizeof (struct AddressDestroyedMessage) },
{&GAS_handle_reservation_request, NULL,
GNUNET_MESSAGE_TYPE_ATS_RESERVATION_REQUEST,
sizeof (struct ReservationRequestMessage)},
{&GAS_handle_preference_change, NULL,
GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_CHANGE, 0},
{&GAS_handle_preference_feedback, NULL,
GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_FEEDBACK, 0},
{NULL, NULL, 0, 0}
};
GSA_server = server;
GSA_stats = GNUNET_STATISTICS_create ("ats", cfg);
GAS_reservations_init ();
if (GNUNET_OK !=
GAS_addresses_init (cfg, GSA_stats))
{
GNUNET_break (0);
GAS_reservations_done ();
if (NULL != GSA_stats)
{
GNUNET_STATISTICS_destroy (GSA_stats, GNUNET_NO);
GSA_stats = NULL;
}
return;
}
GAS_performance_init (server);
GAS_scheduling_init (server);
GNUNET_SERVER_disconnect_notify (server,
&client_disconnect_handler, NULL);
GNUNET_SERVER_add_handlers (server, handlers);
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
&cleanup_task, NULL);
}
/**
* The main function for the ats service.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc, char *const *argv)
{
return (GNUNET_OK ==
GNUNET_SERVICE_run (argc, argv, "ats",
GNUNET_SERVICE_OPTION_NONE,
&run, NULL)) ? 0 : 1;
}
/* end of gnunet-service-ats.c */
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