get rid of stupid network[i]=i array
[oweals/gnunet.git] / src / ats / gnunet-service-ats.c
1 /*
2      This file is part of GNUnet.
3      (C) 2011 Christian Grothoff (and other contributing authors)
4
5      GNUnet is free software; you can redistribute it and/or modify
6      it under the terms of the GNU General Public License as published
7      by the Free Software Foundation; either version 3, or (at your
8      option) any later version.
9
10      GNUnet is distributed in the hope that it will be useful, but
11      WITHOUT ANY WARRANTY; without even the implied warranty of
12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13      General Public License for more details.
14
15      You should have received a copy of the GNU General Public License
16      along with GNUnet; see the file COPYING.  If not, write to the
17      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18      Boston, MA 02111-1307, USA.
19 */
20 /**
21  * @file ats/gnunet-service-ats.c
22  * @brief ats service
23  * @author Matthias Wachs
24  * @author Christian Grothoff
25  */
26 #include "platform.h"
27 #include "gnunet_util_lib.h"
28 #include "gnunet-service-ats.h"
29 #include "gnunet-service-ats_addresses.h"
30 #include "gnunet-service-ats_connectivity.h"
31 #include "gnunet-service-ats_feedback.h"
32 #include "gnunet-service-ats_normalization.h"
33 #include "gnunet-service-ats_performance.h"
34 #include "gnunet-service-ats_preferences.h"
35 #include "gnunet-service-ats_scheduling.h"
36 #include "gnunet-service-ats_reservations.h"
37 #include "gnunet-service-ats_plugins.h"
38 #include "ats.h"
39
40 /**
41  * Handle for statistics.
42  */
43 struct GNUNET_STATISTICS_Handle *GSA_stats;
44
45 /**
46  * Handle to the ATS server.
47  */
48 static struct GNUNET_SERVER_Handle *GSA_server;
49
50
51 /**
52  * We have received a `struct ClientStartMessage` from a client.  Find
53  * out which type of client it is and notify the respective subsystem.
54  *
55  * @param cls closure, unused
56  * @param client handle to the client
57  * @param message the start message
58  */
59 static void
60 handle_ats_start (void *cls,
61                   struct GNUNET_SERVER_Client *client,
62                   const struct GNUNET_MessageHeader *message)
63 {
64   const struct ClientStartMessage *msg =
65       (const struct ClientStartMessage *) message;
66   enum StartFlag flag;
67
68   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
69               "Received `%s' message\n",
70               "ATS_START");
71   flag = ntohl (msg->start_flag);
72   switch (flag)
73   {
74   case START_FLAG_SCHEDULING:
75     if (GNUNET_OK != GAS_scheduling_add_client (client))
76     {
77       GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
78       return;
79     }
80     break;
81   case START_FLAG_PERFORMANCE_WITH_PIC:
82     GAS_performance_add_client (client, flag);
83     break;
84   case START_FLAG_PERFORMANCE_NO_PIC:
85     GAS_performance_add_client (client, flag);
86     break;
87   case START_FLAG_CONNECTION_SUGGESTION:
88     /* This client won't receive messages from us, no need to 'add' */
89     break;
90   default:
91     GNUNET_break (0);
92     GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
93     return;
94   }
95   GNUNET_SERVER_receive_done (client, GNUNET_OK);
96 }
97
98
99 /**
100  * A client disconnected from us.  Tear down the local client
101  * record.
102  *
103  * @param cls unused
104  * @param client handle of the client
105  */
106 static void
107 client_disconnect_handler (void *cls,
108                            struct GNUNET_SERVER_Client *client)
109 {
110   if (NULL == client)
111     return;
112   GAS_scheduling_remove_client (client);
113   GAS_connectivity_remove_client (client);
114   GAS_normalization_preference_client_disconnect (client);
115 }
116
117
118 /**
119  * Task run during shutdown.
120  *
121  * @param cls unused
122  * @param tc unused
123  */
124 static void
125 cleanup_task (void *cls,
126               const struct GNUNET_SCHEDULER_TaskContext *tc)
127 {
128   GAS_addresses_done ();
129   GAS_connectivity_done ();
130   GAS_plugins_done ();
131   GAS_normalization_stop ();
132   GAS_scheduling_done ();
133   GAS_performance_done ();
134   GAS_preference_done ();
135   GAS_reservations_done ();
136   GNUNET_SERVER_disconnect_notify_cancel (GSA_server,
137                                           &client_disconnect_handler,
138                                           NULL);
139   if (NULL != GSA_stats)
140   {
141     GNUNET_STATISTICS_destroy (GSA_stats, GNUNET_NO);
142     GSA_stats = NULL;
143   }
144 }
145
146
147 /**
148  * Process template requests.
149  *
150  * @param cls closure
151  * @param server the initialized server
152  * @param cfg configuration to use
153  */
154 static void
155 run (void *cls,
156      struct GNUNET_SERVER_Handle *server,
157      const struct GNUNET_CONFIGURATION_Handle *cfg)
158 {
159   static const struct GNUNET_SERVER_MessageHandler handlers[] = {
160     {&handle_ats_start, NULL,
161      GNUNET_MESSAGE_TYPE_ATS_START,
162      sizeof (struct ClientStartMessage)},
163     {&GAS_handle_request_address, NULL,
164      GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS,
165      sizeof (struct RequestAddressMessage)},
166     {&GAS_handle_request_address_cancel, NULL,
167      GNUNET_MESSAGE_TYPE_ATS_REQUEST_ADDRESS_CANCEL,
168      sizeof (struct RequestAddressMessage)},
169     {&GAS_handle_request_address_list, NULL,
170      GNUNET_MESSAGE_TYPE_ATS_ADDRESSLIST_REQUEST,
171      sizeof (struct AddressListRequestMessage)},
172     {&GAS_handle_address_add, NULL,
173      GNUNET_MESSAGE_TYPE_ATS_ADDRESS_ADD, 0},
174     {&GAS_handle_address_update, NULL,
175      GNUNET_MESSAGE_TYPE_ATS_ADDRESS_UPDATE, 0},
176     {&GAS_handle_address_destroyed, NULL,
177      GNUNET_MESSAGE_TYPE_ATS_ADDRESS_DESTROYED,
178      sizeof (struct AddressDestroyedMessage) },
179     {&GAS_handle_reservation_request, NULL,
180      GNUNET_MESSAGE_TYPE_ATS_RESERVATION_REQUEST,
181      sizeof (struct ReservationRequestMessage)},
182     {&GAS_handle_preference_change, NULL,
183      GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_CHANGE, 0},
184     {&GAS_handle_preference_feedback, NULL,
185      GNUNET_MESSAGE_TYPE_ATS_PREFERENCE_FEEDBACK, 0},
186     {NULL, NULL, 0, 0}
187   };
188   GSA_server = server;
189   GSA_stats = GNUNET_STATISTICS_create ("ats", cfg);
190   GAS_reservations_init (server);
191   GAS_connectivity_init ();
192   GAS_preference_init ();
193   GAS_normalization_start ();
194   GAS_addresses_init (server);
195   if (GNUNET_OK !=
196       GAS_plugins_init (cfg))
197   {
198     GNUNET_break (0);
199     GAS_addresses_done ();
200     GAS_normalization_stop ();
201     GAS_reservations_done ();
202     GAS_connectivity_done ();
203     GAS_preference_done ();
204     if (NULL != GSA_stats)
205     {
206       GNUNET_STATISTICS_destroy (GSA_stats, GNUNET_NO);
207       GSA_stats = NULL;
208     }
209     return;
210   }
211   GAS_performance_init (server);
212   GAS_scheduling_init (server);
213
214   GNUNET_SERVER_disconnect_notify (server,
215                                    &client_disconnect_handler,
216                                    NULL);
217   GNUNET_SERVER_add_handlers (server, handlers);
218   GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
219                                 &cleanup_task,
220                                 NULL);
221 }
222
223
224 /**
225  * The main function for the ats service.
226  *
227  * @param argc number of arguments from the command line
228  * @param argv command line arguments
229  * @return 0 ok, 1 on error
230  */
231 int
232 main (int argc, char *const *argv)
233 {
234   return (GNUNET_OK ==
235           GNUNET_SERVICE_run (argc, argv, "ats",
236                               GNUNET_SERVICE_OPTION_NONE,
237                               &run, NULL)) ? 0 : 1;
238 }
239
240 /* end of gnunet-service-ats.c */