2 This file is part of GNUnet.
3 (C) 2014 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 dht/gnunet_dht_profiler.c
23 * @brief Profiler for GNUnet DHT
24 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
28 #include "gnunet_util_lib.h"
29 #include "gnunet_testbed_service.h"
30 #include "gnunet_dht_service.h"
33 GNUNET_log (GNUNET_ERROR_TYPE_INFO, __VA_ARGS__)
36 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
39 * Number of peers which should perform a PUT out of 100 peers
41 #define PUT_PROBABILITY 100
44 * Percentage of peers that should act maliciously.
45 * These peers will never start PUT/GET request.
46 * n_active and n_malicious should not intersect.
48 #define MALICIOUS_PEERS 0
53 static struct GNUNET_CONFIGURATION_Handle *cfg;
56 * Name of the file with the hosts to run the test over
58 static char *hosts_file;
61 * Context for a peer which actively does DHT PUT/GET
66 * Context to hold data of peer
72 * The testbed peer this context belongs to
74 struct GNUNET_TESTBED_Peer *peer;
77 * Testbed operation acting on this peer
79 struct GNUNET_TESTBED_Operation *op;
82 * Active context; NULL if this peer is not an active peer
84 struct ActiveContext *ac;
90 * Context for a peer which should act maliciously.
92 struct MaliciousContext
95 * The linked peer context
100 * Handler to the DHT service
102 struct GNUNET_DHT_Handle *dht;
106 * List of all the malicious peers contexts.
108 struct Context **malicious_peer_contexts = NULL;
113 * Context for a peer which actively does DHT PUT/GET
118 * The linked peer context
123 * Handler to the DHT service
125 struct GNUNET_DHT_Handle *dht;
128 * The data used for do a PUT. Will be NULL if a PUT hasn't been performed yet
133 * The active context used for our DHT GET
135 struct ActiveContext *get_ac;
140 struct GNUNET_DHT_PutHandle *dht_put;
145 struct GNUNET_DHT_GetHandle *dht_get;
148 * The hash of the @e put_data
150 struct GNUNET_HashCode hash;
155 GNUNET_SCHEDULER_TaskIdentifier delay_task;
158 * The size of the @e put_data
160 uint16_t put_data_size;
163 * The number of peers currently doing GET on our data
170 * An array of contexts. The size of this array should be equal to @a num_peers
172 static struct Context *a_ctx;
175 * Array of active peers
177 static struct ActiveContext *a_ac;
180 * The delay between starting to do PUTS and GETS
182 static struct GNUNET_TIME_Relative delay;
185 * The timeout for GET and PUT
187 static struct GNUNET_TIME_Relative timeout;
192 static unsigned int num_peers;
196 * Number or malicious peers.
198 static unsigned int n_malicious;
202 * Number of active peers
204 static unsigned int n_active;
207 * Number of DHT service connections we currently have
209 static unsigned int n_dht;
212 * Number of DHT PUTs made
214 static unsigned int n_puts;
217 * Number of DHT PUTs succeeded
219 static unsigned int n_puts_ok;
222 * Number of DHT PUTs failed
224 static unsigned int n_puts_fail;
227 * Number of DHT GETs made
229 static unsigned int n_gets;
232 * Number of DHT GETs succeeded
234 static unsigned int n_gets_ok;
237 * Number of DHT GETs succeeded
239 static unsigned int n_gets_fail;
244 static unsigned int replication;
247 * Number of times we try to find the successor circle formation
249 static unsigned int max_searches;
252 * Testbed Operation (to get stats).
254 static struct GNUNET_TESTBED_Operation *bandwidth_stats_op;
257 * To get successor stats.
259 static struct GNUNET_TESTBED_Operation *successor_stats_op;
262 * Testbed peer handles.
264 static struct GNUNET_TESTBED_Peer **testbed_handles;
267 * Total number of messages sent by peer.
269 static uint64_t outgoing_bandwidth;
272 * Total number of messages received by peer.
274 static uint64_t incoming_bandwidth;
277 * Average number of hops taken to do put.
279 static double average_put_path_length;
282 * Average number of hops taken to do get.
284 static double average_get_path_length;
287 * Total put path length across all peers.
289 static unsigned int total_put_path_length;
292 * Total get path length across all peers.
294 static unsigned int total_get_path_length;
297 * Hashmap to store pair of peer and its corresponding successor.
299 static struct GNUNET_CONTAINER_MultiHashMap *successor_peer_hashmap;
302 * Key to start the lookup on successor_peer_hashmap.
304 static struct GNUNET_HashCode *start_key;
307 * Flag used to get the start_key.
312 * Task to collect peer and its current successor statistics.
314 static GNUNET_SCHEDULER_TaskIdentifier successor_stats_task;
317 * Closure for successor_stats_task.
319 struct Collect_Stat_Context
322 * Current Peer Context.
324 struct Context *service_connect_ctx;
327 * Testbed operation acting on this peer
329 struct GNUNET_TESTBED_Operation *op;
333 * List of all the peers contexts.
335 struct Context **peer_contexts = NULL;
338 * Counter to keep track of peers added to peer_context lists.
340 static int peers_started = 0;
344 * Should we do a PUT (mode = 0) or GET (mode = 1);
354 * Task that collects successor statistics from all the peers.
359 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
363 * Shutdown task. Cleanup all resources and operations.
366 * @param tc scheduler task context
369 do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
371 struct ActiveContext *ac;
376 for (cnt=0; cnt < num_peers; cnt++)
378 if (NULL != a_ctx[cnt].op)
379 GNUNET_TESTBED_operation_done (a_ctx[cnt].op);
381 /* Cleanup active context if this peer is an active peer */
385 if (GNUNET_SCHEDULER_NO_TASK != ac->delay_task)
386 GNUNET_SCHEDULER_cancel (ac->delay_task);
387 if (NULL != ac->put_data)
388 GNUNET_free (ac->put_data);
389 if (NULL != ac->dht_put)
390 GNUNET_DHT_put_cancel (ac->dht_put);
391 if (NULL != ac->dht_get)
392 GNUNET_DHT_get_stop (ac->dht_get);
397 if(NULL != bandwidth_stats_op)
398 GNUNET_TESTBED_operation_done (bandwidth_stats_op);
399 bandwidth_stats_op = NULL;
400 GNUNET_free_non_null (a_ac);
405 * Stats callback. Finish the stats testbed operation and when all stats have
406 * been iterated, shutdown the test.
409 * @param op the operation that has been finished
410 * @param emsg error message in case the operation has failed; will be NULL if
411 * operation has executed successfully.
414 bandwidth_stats_cont (void *cls,
415 struct GNUNET_TESTBED_Operation *op,
418 INFO ("# Outgoing bandwidth: %u\n", outgoing_bandwidth);
419 INFO ("# Incoming bandwidth: %u\n", incoming_bandwidth);
420 GNUNET_SCHEDULER_shutdown ();
425 * Process statistic values.
428 * @param peer the peer the statistic belong to
429 * @param subsystem name of subsystem that created the statistic
430 * @param name the name of the datum
431 * @param value the current value
432 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
433 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
436 bandwidth_stats_iterator (void *cls,
437 const struct GNUNET_TESTBED_Peer *peer,
438 const char *subsystem,
443 static const char *s_sent = "# Bytes transmitted to other peers";
444 static const char *s_recv = "# Bytes received from other peers";
446 if (0 == strncmp (s_sent, name, strlen (s_sent)))
447 outgoing_bandwidth = outgoing_bandwidth + value;
448 else if (0 == strncmp(s_recv, name, strlen (s_recv)))
449 incoming_bandwidth = incoming_bandwidth + value;
452 DEBUG ("Bandwith - Out: %lu; In: %lu\n",
453 (unsigned long) outgoing_bandwidth,
454 (unsigned long) incoming_bandwidth);
462 INFO ("# PUTS made: %u\n", n_puts);
463 INFO ("# PUTS succeeded: %u\n", n_puts_ok);
464 INFO ("# PUTS failed: %u\n", n_puts_fail);
465 INFO ("# GETS made: %u\n", n_gets);
466 INFO ("# GETS succeeded: %u\n", n_gets_ok);
467 INFO ("# GETS failed: %u\n", n_gets_fail);
468 INFO ("# average_put_path_length: %f\n", average_put_path_length);
469 INFO ("# average_get_path_length: %f\n", average_get_path_length);
471 if (NULL == testbed_handles)
473 INFO ("No peers found\n");
477 bandwidth_stats_op = GNUNET_TESTBED_get_statistics (n_active, testbed_handles,
479 bandwidth_stats_iterator,
480 bandwidth_stats_cont, NULL);
485 * Task to cancel DHT GET.
488 * @param tc scheduler task context
491 cancel_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
493 struct ActiveContext *ac = cls;
494 struct Context *ctx = ac->ctx;
496 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
497 GNUNET_assert (NULL != ac->dht_get);
498 GNUNET_DHT_get_stop (ac->dht_get);
501 GNUNET_assert (NULL != ctx->op);
502 GNUNET_TESTBED_operation_done (ctx->op);
505 /* If profiling is complete, summarize */
506 if (n_active == n_gets_fail + n_gets_ok)
513 * Iterator called on each result obtained for a DHT
514 * operation that expects a reply
517 * @param exp when will this value expire
518 * @param key key of the result
519 * @param get_path peers on reply path (or NULL if not recorded)
520 * [0] = datastore's first neighbor, [length - 1] = local peer
521 * @param get_path_length number of entries in @a get_path
522 * @param put_path peers on the PUT path (or NULL if not recorded)
523 * [0] = origin, [length - 1] = datastore
524 * @param put_path_length number of entries in @a put_path
525 * @param type type of the result
526 * @param size number of bytes in @a data
527 * @param data pointer to the result data
531 struct GNUNET_TIME_Absolute exp,
532 const struct GNUNET_HashCode *key,
533 const struct GNUNET_PeerIdentity *get_path,
534 unsigned int get_path_length,
535 const struct GNUNET_PeerIdentity *put_path,
536 unsigned int put_path_length,
537 enum GNUNET_BLOCK_Type type,
538 size_t size, const void *data)
540 struct ActiveContext *ac = cls;
541 struct ActiveContext *get_ac = ac->get_ac;
542 struct Context *ctx = ac->ctx;
544 /* Check the keys of put and get match or not. */
545 GNUNET_assert (0 == memcmp (key, &get_ac->hash, sizeof (struct GNUNET_HashCode)));
546 /* we found the data we are looking for */
547 DEBUG ("We found a GET request; %u remaining\n", n_gets - (n_gets_fail + n_gets_ok));
550 GNUNET_DHT_get_stop (ac->dht_get);
552 GNUNET_SCHEDULER_cancel (ac->delay_task);
553 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
554 GNUNET_assert (NULL != ctx->op);
555 GNUNET_TESTBED_operation_done (ctx->op);
558 total_put_path_length = total_put_path_length + put_path_length;
559 total_get_path_length = total_get_path_length + get_path_length;
561 /* Summarize if profiling is complete */
562 if (n_active == n_gets_fail + n_gets_ok)
564 average_put_path_length = (double)total_put_path_length/(double)n_active;
565 average_get_path_length = (double)total_get_path_length/(double )n_active;
572 * Task to do DHT GETs
574 * @param cls the active context
575 * @param tc the scheduler task context
578 delayed_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
580 struct ActiveContext *ac = cls;
581 struct ActiveContext *get_ac;
584 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
588 r = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, n_active);
590 if (NULL != get_ac->put_data)
595 DEBUG ("Doing a DHT GET for data of size %u\n", get_ac->put_data_size);
596 ac->dht_get = GNUNET_DHT_get_start (ac->dht,
597 GNUNET_BLOCK_TYPE_TEST,
599 1, /* replication level */
601 NULL, 0, /* extended query and size */
602 get_iter, ac); /* GET iterator and closure
606 /* schedule the timeout task for GET */
607 ac->delay_task = GNUNET_SCHEDULER_add_delayed (timeout, &cancel_get, ac);
612 * Connect to DHT services of active peers
619 * Queue up a delayed task for doing DHT GET
621 * @param cls the active context
622 * @param success #GNUNET_OK if the PUT was transmitted,
623 * #GNUNET_NO on timeout,
624 * #GNUNET_SYSERR on disconnect from service
625 * after the PUT message was transmitted
626 * (so we don't know if it was received or not)
629 put_cont (void *cls, int success)
631 struct ActiveContext *ac = cls;
632 struct Context *ctx = ac->ctx;
639 GNUNET_assert (NULL != ctx);
640 GNUNET_TESTBED_operation_done (ctx->op);
641 /* Start GETs if all PUTs have been made */
642 if (n_active == n_puts_ok + n_puts_fail)
651 * Task to do DHT PUTS
653 * @param cls the active context
654 * @param tc the scheduler task context
657 delayed_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
659 struct ActiveContext *ac = cls;
661 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
662 /* Generate and DHT PUT some random data */
663 ac->put_data_size = 16; /* minimum */
664 ac->put_data_size += GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
666 ac->put_data = GNUNET_malloc (ac->put_data_size);
667 GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
668 ac->put_data, ac->put_data_size);
669 GNUNET_CRYPTO_hash (ac->put_data, ac->put_data_size, &ac->hash);
670 DEBUG ("Doing a DHT PUT with data of size %u\n", ac->put_data_size);
671 ac->dht_put = GNUNET_DHT_put (ac->dht, &ac->hash,
674 GNUNET_BLOCK_TYPE_TEST,
677 GNUNET_TIME_UNIT_FOREVER_ABS, /* expiration time */
678 timeout, /* PUT timeout */
679 put_cont, ac); /* continuation and its closure */
685 * Connection to DHT has been established. Call the delay task.
687 * @param cls the active context
688 * @param op the operation that has been finished
689 * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
690 * @param emsg error message in case the operation has failed; will be NULL if
691 * operation has executed successfully.
694 dht_connected (void *cls,
695 struct GNUNET_TESTBED_Operation *op,
699 struct ActiveContext *ac = cls;
700 struct Context *ctx = ac->ctx;
702 GNUNET_assert (NULL != ctx);
703 GNUNET_assert (NULL != ctx->op);
704 GNUNET_assert (ctx->op == op);
705 ac->dht = (struct GNUNET_DHT_Handle *) ca_result;
708 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Connection to DHT service failed: %s\n", emsg);
709 GNUNET_TESTBED_operation_done (ctx->op); /* Calls dht_disconnect() */
716 ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_put, ac);
719 ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay, &delayed_get, ac);
726 * Connect to DHT service and return the DHT client handler
728 * @param cls the active context
729 * @param cfg configuration of the peer to connect to; will be available until
730 * GNUNET_TESTBED_operation_done() is called on the operation returned
731 * from GNUNET_TESTBED_service_connect()
732 * @return service handle to return in 'op_result', NULL on error
735 dht_connect (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
738 return GNUNET_DHT_connect (cfg, 10);
743 * Adapter function called to destroy a connection to
746 * @param cls the active context
747 * @param op_result service handle returned from the connect adapter
750 dht_disconnect (void *cls, void *op_result)
752 struct ActiveContext *ac = cls;
754 GNUNET_assert (NULL != ac->dht);
755 GNUNET_assert (ac->dht == op_result);
756 GNUNET_DHT_disconnect (ac->dht);
759 GNUNET_SCHEDULER_shutdown ();
764 * Connect to DHT services of active peers
770 DEBUG("GNUNET_TESTBED_service_connect \n");
771 for(i = 0; i < n_active; i++)
773 struct ActiveContext *ac = &a_ac[i];
775 GNUNET_TESTBED_service_connect (ac->ctx,
785 static unsigned int tries;
788 * Stats callback. Iterate over the hashmap and check if all th peers form
789 * a virtual ring topology.
792 * @param op the operation that has been finished
793 * @param emsg error message in case the operation has failed; will be NULL if
794 * operation has executed successfully.
797 successor_stats_cont (void *cls,
798 struct GNUNET_TESTBED_Operation *op,
801 struct GNUNET_HashCode *val;
802 struct GNUNET_HashCode *start_val;
804 struct GNUNET_HashCode *key;
806 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
807 GNUNET_TESTBED_operation_done (successor_stats_op);
808 successor_stats_op = NULL;
809 start_val =(struct GNUNET_HashCode *) GNUNET_CONTAINER_multihashmap_get(successor_peer_hashmap,
812 val = GNUNET_new(struct GNUNET_HashCode);
814 while (count < num_peers)
816 key = GNUNET_new(struct GNUNET_HashCode);
818 val = GNUNET_CONTAINER_multihashmap_get (successor_peer_hashmap,
820 GNUNET_assert(NULL != val);
824 if (start_val == val)
826 DEBUG("CIRCLE COMPLETED after %u tries", tries);
828 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
837 if (max_searches == ++tries)
839 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
840 "Maximum tries %u exceeded while checking successor TOTAL TRIES %u"
841 " cirle formation. Exiting\n",
843 if (GNUNET_SCHEDULER_NO_TASK != successor_stats_task)
845 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
846 //FIXME: free hashmap
849 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
857 //FIXME: change delay use exponential back off.
858 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay, &collect_stats, cls);
864 * Process successor statistic values.
867 * @param peer the peer the statistic belong to
868 * @param subsystem name of subsystem that created the statistic
869 * @param name the name of the datum
870 * @param value the current value
871 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
872 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
875 successor_stats_iterator (void *cls,
876 const struct GNUNET_TESTBED_Peer *peer,
877 const char *subsystem,
882 static const char *key_string = "XDHT";
883 if (0 == strncmp (key_string, name, strlen (key_string)))
886 char successor_str[13];
887 char truncated_my_id_str[13];
888 char truncated_successor_str[13];
889 struct GNUNET_HashCode *my_id_key;
890 struct GNUNET_HashCode *succ_key;
892 strtok((char *)name,":");
893 my_id_str = strtok(NULL,":");
895 strncpy(truncated_my_id_str, my_id_str, 12);
896 truncated_my_id_str[12] = '\0';
897 my_id_key = GNUNET_new(struct GNUNET_HashCode);
898 GNUNET_CRYPTO_hash (truncated_my_id_str, sizeof(truncated_my_id_str),my_id_key);
899 GNUNET_STRINGS_data_to_string(&value, sizeof(uint64_t), successor_str, 13);
900 strncpy(truncated_successor_str, successor_str, 12);
901 truncated_successor_str[12] ='\0';
903 succ_key = GNUNET_new(struct GNUNET_HashCode);
904 GNUNET_CRYPTO_hash (truncated_successor_str, sizeof(truncated_successor_str),succ_key);
908 start_key = my_id_key;
911 GNUNET_CONTAINER_multihashmap_put (successor_peer_hashmap,
912 my_id_key, (void *)succ_key,
913 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
920 * Task that collects peer and its corresponding successors.
922 * @param cls Closure (NULL).
923 * @param tc Task Context.
926 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
928 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
931 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start collecting statistics...\n");
932 DEBUG("num_peers = %d", num_peers);
933 GNUNET_assert(NULL != testbed_handles);
936 /* Check for successor pointer, don't start put till the virtual ring topology
939 GNUNET_TESTBED_get_statistics (num_peers, testbed_handles,
941 successor_stats_iterator,
942 successor_stats_cont, cls);
944 GNUNET_assert(NULL != successor_stats_op);
948 * Callback called when DHT service on the peer is started
950 * @param cls the context
951 * @param op the operation that has been finished
952 * @param emsg error message in case the operation has failed; will be NULL if
953 * operation has executed successfully.
956 service_started (void *cls,
957 struct GNUNET_TESTBED_Operation *op,
960 struct Context *ctx = cls;
962 GNUNET_assert (NULL != ctx);
963 GNUNET_assert (NULL != ctx->op);
964 GNUNET_TESTBED_operation_done (ctx->op);
966 DEBUG("Peers Started = %d; num_peers = %d \n", peers_started, num_peers);
967 if (GNUNET_SCHEDULER_NO_TASK == successor_stats_task && peers_started == num_peers)
969 DEBUG("successor_stats_task \n");
970 struct Collect_Stat_Context *collect_stat_cls = GNUNET_new(struct Collect_Stat_Context);
971 collect_stat_cls->service_connect_ctx = cls;
972 collect_stat_cls->op = op;
973 successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
975 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay,
983 * Signature of a main function for a testcase.
986 * @param h the run handle
987 * @param num_peers number of peers in 'peers'
988 * @param peers handle to peers run in the testbed
989 * @param links_succeeded the number of overlay link connection attempts that
991 * @param links_failed the number of overlay link
995 struct GNUNET_TESTBED_RunHandle *h,
996 unsigned int num_peers, struct GNUNET_TESTBED_Peer **peers,
997 unsigned int links_succeeded,
998 unsigned int links_failed)
1001 unsigned int ac_cnt;
1003 testbed_handles = peers;
1009 INFO ("%u peers started\n", num_peers);
1010 a_ctx = GNUNET_malloc (sizeof (struct Context) * num_peers);
1012 /* select the peers which actively participate in profiling */
1013 n_active = num_peers * PUT_PROBABILITY / 100;
1016 GNUNET_SCHEDULER_shutdown ();
1017 GNUNET_free (a_ctx);
1021 #if ENABLE_MALICIOUS
1023 if(PUT_PROBABILITY + MALICIOUS_PEERS > 100)
1025 DEBUG ("Reduce either number of malicious peer or active peers. ");
1026 GNUNET_SCHEDULER_shutdown ();
1027 GNUNET_free (a_ctx);
1031 /* Select the peers which should act maliciously. */
1032 n_malicious = num_peers * MALICIOUS_PEERS / 100;
1034 /* Select n_malicious peers and ensure that those are not active peers.
1035 keep all malicious peer at one place, and call act malicious for all
1040 a_ac = GNUNET_malloc (n_active * sizeof (struct ActiveContext));
1042 for (cnt = 0; cnt < num_peers && ac_cnt < n_active; cnt++)
1044 if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
1047 a_ctx[cnt].ac = &a_ac[ac_cnt];
1048 a_ac[ac_cnt].ctx = &a_ctx[cnt];
1052 a_ac = GNUNET_realloc (a_ac, n_active * sizeof (struct ActiveContext));
1053 INFO ("Active peers: %u\n", n_active);
1055 /* start DHT service on all peers */
1056 for (cnt = 0; cnt < num_peers; cnt++)
1058 a_ctx[cnt].peer = peers[cnt];
1059 a_ctx[cnt].op = GNUNET_TESTBED_peer_manage_service (&a_ctx[cnt],
1070 * Main function that will be run by the scheduler.
1072 * @param cls closure
1073 * @param args remaining command-line arguments
1074 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
1075 * @param config configuration
1078 run (void *cls, char *const *args, const char *cfgfile,
1079 const struct GNUNET_CONFIGURATION_Handle *config)
1081 uint64_t event_mask;
1085 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Exiting as the number of peers is %u\n"),
1089 cfg = GNUNET_CONFIGURATION_dup (config);
1091 GNUNET_TESTBED_run (hosts_file, cfg, num_peers, event_mask, NULL,
1092 NULL, &test_run, NULL);
1093 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &do_shutdown,
1101 * @return 0 on success
1104 main (int argc, char *const *argv)
1108 static struct GNUNET_GETOPT_CommandLineOption options[] = {
1109 {'n', "peers", "COUNT",
1110 gettext_noop ("number of peers to start"),
1111 1, &GNUNET_GETOPT_set_uint, &num_peers},
1112 {'s', "searches", "COUNT",
1113 gettext_noop ("maximum number of times we try to search for successor circle formation (default is 1)"),
1114 1, &GNUNET_GETOPT_set_uint, &max_searches},
1115 {'H', "hosts", "FILENAME",
1116 gettext_noop ("name of the file with the login information for the testbed"),
1117 1, &GNUNET_GETOPT_set_string, &hosts_file},
1118 {'d', "delay", "DELAY",
1119 gettext_noop ("delay for starting DHT PUT and GET"),
1120 1, &GNUNET_GETOPT_set_relative_time, &delay},
1121 {'r', "replication", "DEGREE",
1122 gettext_noop ("replication degree for DHT PUTs"),
1123 1, &GNUNET_GETOPT_set_uint, &replication},
1124 {'t', "timeout", "TIMEOUT",
1125 gettext_noop ("timeout for DHT PUT and GET requests"),
1126 1, &GNUNET_GETOPT_set_relative_time, &timeout},
1127 GNUNET_GETOPT_OPTION_END
1131 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1133 delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20); /* default delay */
1134 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1); /* default timeout */
1135 replication = 1; /* default replication */
1138 GNUNET_PROGRAM_run (argc, argv, "dht-profiler",
1140 ("Measure quality and performance of the DHT service."),
1141 options, &run, NULL))