2 This file is part of GNUnet.
3 (C) 2008--2013 Christian Grothoff (and other contributing authors)
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.
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.
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.
22 * @file testbed/gnunet-service-testbed-logger.c
23 * @brief service for collecting messages and writing to a file
24 * @author Sree Harsha Totakura
28 #include "gnunet_util_lib.h"
31 * Generic logging shorthand
33 #define LOG(type, ...) \
34 GNUNET_log (type, __VA_ARGS__)
37 * Debug logging shorthand
39 #define LOG_DEBUG(...) \
40 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
43 * The message queue for sending messages to clients
48 * The message to be sent
50 struct GNUNET_MessageHeader *msg;
53 * The client to send the message to
55 struct GNUNET_SERVER_Client *client;
58 * next pointer for DLL
60 struct MessageQueue *next;
63 * prev pointer for DLL
65 struct MessageQueue *prev;
69 * The message queue head
71 static struct MessageQueue *mq_head;
74 * The message queue tail
76 static struct MessageQueue *mq_tail;
79 * Handle for buffered writing.
81 struct GNUNET_BIO_WriteHandle *bio;
84 * The shutdown task handle
86 static GNUNET_SCHEDULER_TaskIdentifier shutdown_task_id;
89 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
92 * @param client identification of the client
93 * @param msg the actual message
96 handle_log_msg (void *cls, struct GNUNET_SERVER_Client *client,
97 const struct GNUNET_MessageHeader *msg)
101 ms = ntohs (msg->size);
102 ms -= sizeof (struct GNUNET_MessageHeader);
103 GNUNET_BIO_write (bio, &msg[1], ms);
104 GNUNET_SERVER_receive_done (client, GNUNET_OK);
109 * Task to clean up and shutdown nicely
112 * @param tc the TaskContext from scheduler
115 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
117 struct MessageQueue *mq_entry;
119 shutdown_task_id = GNUNET_SCHEDULER_NO_TASK;
120 while (NULL != (mq_entry = mq_head))
122 GNUNET_free (mq_entry->msg);
123 GNUNET_SERVER_client_drop (mq_entry->client);
124 GNUNET_CONTAINER_DLL_remove (mq_head, mq_tail, mq_entry);
125 GNUNET_free (mq_entry);
127 GNUNET_break (GNUNET_OK == GNUNET_BIO_write_close (bio));
135 * @param server the initialized server
136 * @param cfg configuration to use
139 logger_run (void *cls, struct GNUNET_SERVER_Handle *server,
140 const struct GNUNET_CONFIGURATION_Handle *cfg)
142 static const struct GNUNET_SERVER_MessageHandler message_handlers[] = {
143 {&handle_log_msg, NULL, GNUNET_MESSAGE_TYPE_TESTBED_LOGGER_MSG, 0},
153 GNUNET_CONFIGURATION_get_value_filename (cfg, "TESTBED-LOGGER", "DIR",
156 LOG (GNUNET_ERROR_TYPE_ERROR, "Not logging directory definied. Exiting\n");
157 GNUNET_SCHEDULER_shutdown ();
161 hname_len = GNUNET_OS_get_hostname_max_length ();
162 hname = GNUNET_malloc (hname_len);
163 if (0 != gethostname (hname, hname_len))
165 LOG (GNUNET_ERROR_TYPE_ERROR, "Cannot get hostname. Exiting\n");
168 GNUNET_SCHEDULER_shutdown ();
171 (void) GNUNET_asprintf (&fn, "%s/%.*s_%jd.dat", dir, hname_len, hname,
175 if (NULL == (bio = GNUNET_BIO_write_open (fn)))
178 GNUNET_SCHEDULER_shutdown ();
182 GNUNET_SERVER_add_handlers (server, message_handlers);
184 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
185 &shutdown_task, NULL);
186 LOG_DEBUG ("TESTBED-LOGGER startup complete\n");
191 * The starting point of execution
194 main (int argc, char *const *argv)
196 //sleep (15); /* Debugging */
198 GNUNET_SERVICE_run (argc, argv, "testbed-logger",
199 GNUNET_SERVICE_OPTION_NONE,
200 &logger_run, NULL)) ? 0 : 1;
203 /* end of gnunet-service-testbed.c */