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3 Copyright (C) 2008--2014 GNUnet e.V.
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 SPDX-License-Identifier: AGPL3.0-or-later
22 * @file testbed/gnunet-daemon-latency-logger.c
23 * @brief log latency values from neighbour connections into an SQLite database
24 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
28 #include "gnunet_util_lib.h"
29 #include "gnunet_ats_service.h"
36 #define LOG(type, ...) \
37 GNUNET_log (type, __VA_ARGS__)
40 * Debug logging shorthand
43 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
46 * Log an error message at log-level 'level' that indicates
47 * a failure of the command 'cmd' on file 'filename'
48 * with the message given by strerror(errno).
50 #define LOG_SQLITE(db, msg, level, cmd) \
52 GNUNET_log_from (level, "sqlite", _ ( \
53 "`%s' failed at %s:%d with error: %s\n"), \
54 cmd, __FILE__, __LINE__, sqlite3_errmsg (db)); \
56 GNUNET_asprintf (msg, _ ("`%s' failed at %s:%u with error: %s"), cmd, \
57 __FILE__, __LINE__, sqlite3_errmsg (db)); \
62 * Entry type to be used in the map to store old latency values
69 struct GNUNET_PeerIdentity id;
72 * The last known value for latency.
80 * Handle to the map used to store old latency values for peers
82 static struct GNUNET_CONTAINER_MultiPeerMap *map;
85 * The SQLite database handle
87 static struct sqlite3 *db;
90 * Handle to the ATS performance subsystem
92 static struct GNUNET_ATS_PerformanceHandle *ats;
95 * Prepared statement for inserting values into the database table
97 static struct sqlite3_stmt *stmt_insert;
102 * Iterator over hash map entries.
105 * @param key current public key
106 * @param value value in the hash map
107 * @return #GNUNET_YES if we should continue to
112 free_iterator (void *cls,
113 const struct GNUNET_PeerIdentity *key,
116 struct Entry *e = cls;
118 GNUNET_assert (GNUNET_YES ==
119 GNUNET_CONTAINER_multipeermap_remove (map, key, e));
132 do_shutdown (void *cls)
134 GNUNET_ATS_performance_done (ats);
136 if (NULL != stmt_insert)
138 sqlite3_finalize (stmt_insert);
141 GNUNET_break (SQLITE_OK == sqlite3_close (db));
145 GNUNET_assert (GNUNET_SYSERR !=
146 GNUNET_CONTAINER_multipeermap_iterate (map, free_iterator,
148 GNUNET_CONTAINER_multipeermap_destroy (map);
154 * Signature of a function that is called with QoS information about an address.
157 * @param address the address
158 * @param address_active #GNUNET_YES if this address is actively used
159 * to maintain a connection to a peer;
160 * #GNUNET_NO if the address is not actively used;
161 * #GNUNET_SYSERR if this address is no longer available for ATS
162 * @param bandwidth_out assigned outbound bandwidth for the connection
163 * @param bandwidth_in assigned inbound bandwidth for the connection
164 * @param prop performance data for the address (as far as known)
167 addr_info_cb (void *cls,
168 const struct GNUNET_HELLO_Address *address,
170 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
171 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
172 const struct GNUNET_ATS_Properties *prop)
174 static const char *query_insert =
175 "INSERT INTO ats_info("
185 int latency; /* FIXME: type!? */
189 /* ATS service temporarily disconnected */
193 GNUNET_assert (NULL != db);
194 if (GNUNET_YES != address_active)
196 latency = (int) prop->delay.rel_value_us;
198 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (map,
201 entry = GNUNET_CONTAINER_multipeermap_get (map, &address->peer);
202 GNUNET_assert (NULL != entry);
203 if (latency == entry->latency)
206 if (NULL == stmt_insert)
208 if (SQLITE_OK != sqlite3_prepare_v2 (db, query_insert, -1, &stmt_insert,
211 LOG_SQLITE (db, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_prepare_v2");
215 if ((SQLITE_OK != sqlite3_bind_text (stmt_insert, 1,
216 GNUNET_i2s (&address->peer), -1,
218 (SQLITE_OK != sqlite3_bind_int (stmt_insert, 2, latency)))
220 LOG_SQLITE (db, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_bind_text");
223 if (SQLITE_DONE != sqlite3_step (stmt_insert))
225 LOG_SQLITE (db, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_step");
228 if (SQLITE_OK != sqlite3_reset (stmt_insert))
230 LOG_SQLITE (db, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite3_insert");
235 entry = GNUNET_new (struct Entry);
236 entry->id = address->peer;
237 GNUNET_CONTAINER_multipeermap_put (map,
239 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
241 entry->latency = latency;
245 GNUNET_SCHEDULER_shutdown ();
250 * Main function that will be run.
253 * @param args remaining command-line arguments
254 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
255 * @param c configuration
258 run (void *cls, char *const *args, const char *cfgfile,
259 const struct GNUNET_CONFIGURATION_Handle *c)
261 const char *query_create =
262 "CREATE TABLE ats_info ("
269 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (c, "LATENCY-LOGGER",
276 if (SQLITE_OK != sqlite3_open (dbfile, &db))
280 LOG_SQLITE (db, NULL, GNUNET_ERROR_TYPE_ERROR, "sqlite_open_v2");
281 GNUNET_break (SQLITE_OK == sqlite3_close (db));
284 LOG (GNUNET_ERROR_TYPE_ERROR, "Cannot open sqlite file %s\n", dbfile);
285 GNUNET_free (dbfile);
288 if (0 != sqlite3_exec (db, query_create, NULL, NULL, NULL))
289 DEBUG ("SQLite Error: %d. Perhaps the database `%s' already exits.\n",
290 sqlite3_errcode (db), dbfile);
291 DEBUG ("Opened database %s\n", dbfile);
292 GNUNET_free (dbfile);
294 ats = GNUNET_ATS_performance_init (c, &addr_info_cb, NULL);
295 map = GNUNET_CONTAINER_multipeermap_create (30, GNUNET_YES);
296 GNUNET_SCHEDULER_add_shutdown (&do_shutdown, NULL);
301 * Execution entry point
304 main (int argc, char *const *argv)
306 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
307 GNUNET_GETOPT_OPTION_END
311 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
315 GNUNET_PROGRAM_run (argc, argv, "gnunet-daemon-latency-logger",
317 "Daemon to log latency values of connections to neighbours"),
318 options, &run, NULL)) ? 0 : 1;
319 GNUNET_free ((void*) argv);