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
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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 General Public License for more details.
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16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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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 rounds for collecting statistics
182 static struct GNUNET_TIME_Relative delay_stats;
185 * The delay to start puts.
187 static struct GNUNET_TIME_Relative delay_put;
190 * The delay to start puts.
192 static struct GNUNET_TIME_Relative delay_get;
195 * The timeout for GET and PUT
197 static struct GNUNET_TIME_Relative timeout;
202 static unsigned int num_peers;
206 * Number or malicious peers.
208 static unsigned int n_malicious;
212 * Number of active peers
214 static unsigned int n_active;
217 * Number of DHT service connections we currently have
219 static unsigned int n_dht;
222 * Number of DHT PUTs made
224 static unsigned int n_puts;
227 * Number of DHT PUTs succeeded
229 static unsigned int n_puts_ok;
232 * Number of DHT PUTs failed
234 static unsigned int n_puts_fail;
237 * Number of DHT GETs made
239 static unsigned int n_gets;
242 * Number of DHT GETs succeeded
244 static unsigned int n_gets_ok;
247 * Number of DHT GETs succeeded
249 static unsigned int n_gets_fail;
254 static unsigned int replication;
257 * Number of times we try to find the successor circle formation
259 static unsigned int max_searches;
262 * Testbed Operation (to get stats).
264 static struct GNUNET_TESTBED_Operation *bandwidth_stats_op;
267 * To get successor stats.
269 static struct GNUNET_TESTBED_Operation *successor_stats_op;
272 * Testbed peer handles.
274 static struct GNUNET_TESTBED_Peer **testbed_handles;
277 * Total number of messages sent by peer.
279 static uint64_t outgoing_bandwidth;
282 * Total number of messages received by peer.
284 static uint64_t incoming_bandwidth;
287 * Average number of hops taken to do put.
289 static double average_put_path_length;
292 * Average number of hops taken to do get.
294 static double average_get_path_length;
297 * Total put path length across all peers.
299 static unsigned int total_put_path_length;
302 * Total get path length across all peers.
304 static unsigned int total_get_path_length;
307 * Hashmap to store pair of peer and its corresponding successor.
309 static struct GNUNET_CONTAINER_MultiHashMap *successor_peer_hashmap;
312 * Key to start the lookup on successor_peer_hashmap.
314 static struct GNUNET_HashCode *start_key;
317 * Flag used to get the start_key.
322 * Task to collect peer and its current successor statistics.
324 static GNUNET_SCHEDULER_TaskIdentifier successor_stats_task;
327 * Closure for successor_stats_task.
329 struct Collect_Stat_Context
332 * Current Peer Context.
334 struct Context *service_connect_ctx;
337 * Testbed operation acting on this peer
339 struct GNUNET_TESTBED_Operation *op;
343 * List of all the peers contexts.
345 struct Context **peer_contexts = NULL;
348 * Counter to keep track of peers added to peer_context lists.
350 static int peers_started = 0;
353 * Should we do a PUT (mode = 0) or GET (mode = 1);
364 * Are we shutting down
366 static int in_shutdown = 0;
369 * Task that collects successor statistics from all the peers.
374 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
377 * Shutdown task. Cleanup all resources and operations.
380 * @param tc scheduler task context
383 do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
385 struct ActiveContext *ac;
388 in_shutdown = GNUNET_YES;
391 for (cnt=0; cnt < num_peers; cnt++)
393 /* Cleanup active context if this peer is an active peer */
397 if (GNUNET_SCHEDULER_NO_TASK != ac->delay_task)
398 GNUNET_SCHEDULER_cancel (ac->delay_task);
399 if (NULL != ac->put_data)
400 GNUNET_free (ac->put_data);
401 if (NULL != ac->dht_put)
402 GNUNET_DHT_put_cancel (ac->dht_put);
403 if (NULL != ac->dht_get)
404 GNUNET_DHT_get_stop (ac->dht_get);
406 /* Cleanup testbed operation handle at the last as this operation may
407 contain service connection to DHT */
408 if (NULL != a_ctx[cnt].op)
409 GNUNET_TESTBED_operation_done (a_ctx[cnt].op);
414 //FIXME: Should we collect stats only for put/get not for other messages.
415 if(NULL != bandwidth_stats_op)
416 GNUNET_TESTBED_operation_done (bandwidth_stats_op);
417 bandwidth_stats_op = NULL;
418 GNUNET_free_non_null (a_ac);
423 * Stats callback. Finish the stats testbed operation and when all stats have
424 * been iterated, shutdown the test.
427 * @param op the operation that has been finished
428 * @param emsg error message in case the operation has failed; will be NULL if
429 * operation has executed successfully.
432 bandwidth_stats_cont (void *cls,
433 struct GNUNET_TESTBED_Operation *op,
436 INFO ("# Outgoing bandwidth: %u\n", outgoing_bandwidth);
437 INFO ("# Incoming bandwidth: %u\n", incoming_bandwidth);
438 GNUNET_SCHEDULER_shutdown ();
443 * Process statistic values.
446 * @param peer the peer the statistic belong to
447 * @param subsystem name of subsystem that created the statistic
448 * @param name the name of the datum
449 * @param value the current value
450 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
451 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
454 bandwidth_stats_iterator (void *cls,
455 const struct GNUNET_TESTBED_Peer *peer,
456 const char *subsystem,
461 static const char *s_sent = "# Bytes transmitted to other peers";
462 static const char *s_recv = "# Bytes received from other peers";
464 if (0 == strncmp (s_sent, name, strlen (s_sent)))
465 outgoing_bandwidth = outgoing_bandwidth + value;
466 else if (0 == strncmp(s_recv, name, strlen (s_recv)))
467 incoming_bandwidth = incoming_bandwidth + value;
476 INFO ("# PUTS made: %u\n", n_puts);
477 INFO ("# PUTS succeeded: %u\n", n_puts_ok);
478 INFO ("# PUTS failed: %u\n", n_puts_fail);
479 INFO ("# GETS made: %u\n", n_gets);
480 INFO ("# GETS succeeded: %u\n", n_gets_ok);
481 INFO ("# GETS failed: %u\n", n_gets_fail);
482 INFO ("# average_put_path_length: %f\n", average_put_path_length);
483 INFO ("# average_get_path_length: %f\n", average_get_path_length);
485 if (NULL == testbed_handles)
487 INFO ("No peers found\n");
491 bandwidth_stats_op = GNUNET_TESTBED_get_statistics (n_active, testbed_handles,
493 bandwidth_stats_iterator,
494 bandwidth_stats_cont, NULL);
499 * Task to cancel DHT GET.
502 * @param tc scheduler task context
505 cancel_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
507 struct ActiveContext *ac = cls;
508 struct Context *ctx = ac->ctx;
510 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
511 GNUNET_assert (NULL != ac->dht_get);
512 GNUNET_DHT_get_stop (ac->dht_get);
515 GNUNET_assert (NULL != ctx->op);
516 GNUNET_TESTBED_operation_done (ctx->op);
519 /* If profiling is complete, summarize */
520 if (n_active == n_gets_fail + n_gets_ok)
527 * Iterator called on each result obtained for a DHT
528 * operation that expects a reply
531 * @param exp when will this value expire
532 * @param key key of the result
533 * @param get_path peers on reply path (or NULL if not recorded)
534 * [0] = datastore's first neighbor, [length - 1] = local peer
535 * @param get_path_length number of entries in @a get_path
536 * @param put_path peers on the PUT path (or NULL if not recorded)
537 * [0] = origin, [length - 1] = datastore
538 * @param put_path_length number of entries in @a put_path
539 * @param type type of the result
540 * @param size number of bytes in @a data
541 * @param data pointer to the result data
545 struct GNUNET_TIME_Absolute exp,
546 const struct GNUNET_HashCode *key,
547 const struct GNUNET_PeerIdentity *get_path,
548 unsigned int get_path_length,
549 const struct GNUNET_PeerIdentity *put_path,
550 unsigned int put_path_length,
551 enum GNUNET_BLOCK_Type type,
552 size_t size, const void *data)
554 struct ActiveContext *ac = cls;
555 struct ActiveContext *get_ac = ac->get_ac;
556 struct Context *ctx = ac->ctx;
558 /* Check the keys of put and get match or not. */
559 GNUNET_assert (0 == memcmp (key, &get_ac->hash, sizeof (struct GNUNET_HashCode)));
560 /* we found the data we are looking for */
561 DEBUG ("We found a GET request; %u remaining\n", n_gets - (n_gets_fail + n_gets_ok));
564 GNUNET_DHT_get_stop (ac->dht_get);
566 if (ac->delay_task != GNUNET_SCHEDULER_NO_TASK)
567 GNUNET_SCHEDULER_cancel (ac->delay_task);
568 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
569 GNUNET_assert (NULL != ctx->op);
570 GNUNET_TESTBED_operation_done (ctx->op);
573 total_put_path_length = total_put_path_length + put_path_length;
574 total_get_path_length = total_get_path_length + get_path_length;
576 /* Summarize if profiling is complete */
577 if (n_active == n_gets_fail + n_gets_ok)
579 average_put_path_length = (double)total_put_path_length/(double)n_active;
580 average_get_path_length = (double)total_get_path_length/(double )n_active;
587 * Task to do DHT GETs
589 * @param cls the active context
590 * @param tc the scheduler task context
593 delayed_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
595 struct ActiveContext *ac = cls;
596 struct ActiveContext *get_ac;
599 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
603 r = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, n_active);
605 if (NULL != get_ac->put_data)
610 DEBUG ("GET_REQUEST_START key %s \n", GNUNET_h2s((struct GNUNET_HashCode *)ac->put_data));
611 ac->dht_get = GNUNET_DHT_get_start (ac->dht,
612 GNUNET_BLOCK_TYPE_TEST,
614 1, /* replication level */
616 NULL, 0, /* extended query and size */
617 get_iter, ac); /* GET iterator and closure
621 /* schedule the timeout task for GET */
622 ac->delay_task = GNUNET_SCHEDULER_add_delayed (timeout, &cancel_get, ac);
627 * Task to teardown the dht connection. We do it as a task because calling
628 * GNUNET_DHT_disconnect() from put_continutation_callback seems illegal (the
629 * put_continuation_callback() is getting called again synchronously). Also,
630 * only free the operation when we are not shutting down; the shutdown task will
631 * clear the operation during shutdown.
633 * @param cls the context
634 * @return tc scheduler task context.
637 teardown_dht_connection (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
639 struct Context *ctx = cls;
640 struct GNUNET_TESTBED_Operation *op;
642 if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
644 GNUNET_assert (NULL != ctx);
645 GNUNET_assert (NULL != (op = ctx->op));
647 GNUNET_TESTBED_operation_done (op);
652 * Queue up a delayed task for doing DHT GET
654 * @param cls the active context
655 * @param success #GNUNET_OK if the PUT was transmitted,
656 * #GNUNET_NO on timeout,
657 * #GNUNET_SYSERR on disconnect from service
658 * after the PUT message was transmitted
659 * (so we don't know if it was received or not)
662 put_cont (void *cls, int success)
664 struct ActiveContext *ac = cls;
665 struct Context *ctx = ac->ctx;
672 GNUNET_assert (NULL != ctx);
673 (void) GNUNET_SCHEDULER_add_now (&teardown_dht_connection, ctx);
678 * Task to do DHT PUTS
680 * @param cls the active context
681 * @param tc the scheduler task context
684 delayed_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
686 struct ActiveContext *ac = cls;
688 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
689 /* Generate and DHT PUT some random data */
690 ac->put_data_size = 16; /* minimum */
691 ac->put_data_size += GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
693 ac->put_data = GNUNET_malloc (ac->put_data_size);
694 GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
695 ac->put_data, ac->put_data_size);
696 GNUNET_CRYPTO_hash (ac->put_data, ac->put_data_size, &ac->hash);
697 DEBUG ("PUT_REQUEST_START key %s \n", GNUNET_h2s((struct GNUNET_HashCode *)ac->put_data));
698 ac->dht_put = GNUNET_DHT_put (ac->dht, &ac->hash,
701 GNUNET_BLOCK_TYPE_TEST,
704 GNUNET_TIME_UNIT_FOREVER_ABS, /* expiration time */
705 timeout, /* PUT timeout */
706 put_cont, ac); /* continuation and its closure */
712 * Connection to DHT has been established. Call the delay task.
714 * @param cls the active context
715 * @param op the operation that has been finished
716 * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
717 * @param emsg error message in case the operation has failed; will be NULL if
718 * operation has executed successfully.
721 dht_connected (void *cls,
722 struct GNUNET_TESTBED_Operation *op,
726 struct ActiveContext *ac = cls;
727 struct Context *ctx = ac->ctx;
729 GNUNET_assert (NULL != ctx); //FIXME: Fails
730 GNUNET_assert (NULL != ctx->op);
731 GNUNET_assert (ctx->op == op);
732 ac->dht = (struct GNUNET_DHT_Handle *) ca_result;
735 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Connection to DHT service failed: %s\n", emsg);
736 GNUNET_TESTBED_operation_done (ctx->op); /* Calls dht_disconnect() */
744 delay_put.rel_value_us =
745 delay_put.rel_value_us +
746 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
747 delay_put.rel_value_us);
748 ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay_put, &delayed_put, ac);
753 delay_get.rel_value_us =
754 delay_get.rel_value_us +
755 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
756 delay_get.rel_value_us);
757 ac->delay_task = GNUNET_SCHEDULER_add_delayed (delay_get, &delayed_get, ac);
765 * Connect to DHT service and return the DHT client handler
767 * @param cls the active context
768 * @param cfg configuration of the peer to connect to; will be available until
769 * GNUNET_TESTBED_operation_done() is called on the operation returned
770 * from GNUNET_TESTBED_service_connect()
771 * @return service handle to return in 'op_result', NULL on error
774 dht_connect (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
777 return GNUNET_DHT_connect (cfg, 10);
782 * Connect to DHT services of active peers
789 * Adapter function called to destroy a connection to
792 * @param cls the active context
793 * @param op_result service handle returned from the connect adapter
796 dht_disconnect (void *cls, void *op_result)
798 struct ActiveContext *ac = cls;
800 GNUNET_assert (NULL != ac->dht);
801 GNUNET_assert (ac->dht == op_result);
802 GNUNET_DHT_disconnect (ac->dht);
807 if (GNUNET_YES == in_shutdown)
812 if ((n_puts_ok + n_puts_fail) != n_active)
814 /* Start GETs if all PUTs have been made */
816 //(void) GNUNET_SCHEDULER_add_now (&call_start_profiling, NULL);
820 if ((n_gets_ok + n_gets_fail) != n_active)
824 GNUNET_SCHEDULER_shutdown ();
829 * Connect to DHT services of active peers
837 DEBUG("GNUNET_TESTBED_service_connect \n");
838 GNUNET_break (GNUNET_YES != in_shutdown);
839 for(i = 0; i < n_active; i++)
841 struct ActiveContext *ac = &a_ac[i];
842 GNUNET_assert (NULL != (ctx = ac->ctx));
843 GNUNET_assert (NULL == ctx->op);
845 GNUNET_TESTBED_service_connect (ctx,
856 hashmap_iterate_remove(void *cls,
857 const struct GNUNET_HashCode *key,
860 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(successor_peer_hashmap, key, value));
865 static unsigned int tries;
868 * Stats callback. Iterate over the hashmap and check if all th peers form
869 * a virtual ring topology.
872 * @param op the operation that has been finished
873 * @param emsg error message in case the operation has failed; will be NULL if
874 * operation has executed successfully.
877 successor_stats_cont (void *cls,
878 struct GNUNET_TESTBED_Operation *op,
881 struct GNUNET_HashCode *val;
882 struct GNUNET_HashCode *start_val;
883 struct GNUNET_HashCode *key;
886 /* Don't schedule the task till we are looking for circle here. */
887 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
888 GNUNET_TESTBED_operation_done (successor_stats_op);
889 successor_stats_op = NULL;
892 (struct GNUNET_HashCode *) GNUNET_CONTAINER_multihashmap_get(successor_peer_hashmap,
896 for (count = 0; count < num_peers; count++)
899 val = GNUNET_CONTAINER_multihashmap_get (successor_peer_hashmap,
905 /* Remove the entry from hashmap. This is done to take care of loop. */
907 GNUNET_CONTAINER_multihashmap_remove (successor_peer_hashmap,
910 DEBUG ("Failed to remove entry from hashmap\n");
913 /* If a peer has its own identity as its successor. */
914 if (0 == memcmp(key, val, sizeof (struct GNUNET_HashCode)))
920 GNUNET_assert(GNUNET_SYSERR !=
921 GNUNET_CONTAINER_multihashmap_iterate (successor_peer_hashmap,
922 hashmap_iterate_remove,
925 successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
927 //TODO:Check if comparison is correct.
928 if ((start_val == val) && (count == num_peers))
930 DEBUG("CIRCLE COMPLETED after %u tries", tries);
931 //FIXME: FREE HASHMAP.
932 //FIXME: If circle is done, then check that finger table of all the peers
933 //are fill atleast O(log N) and then start with the experiments.
934 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
941 if (max_searches == ++tries)
943 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
944 "Maximum tries %u exceeded while checking successor TOTAL TRIES %u"
945 " cirle formation. Exiting\n",
947 if (GNUNET_SCHEDULER_NO_TASK != successor_stats_task)
949 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
951 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
961 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay_stats, &collect_stats, cls);
968 * Process successor statistic values.
971 * @param peer the peer the statistic belong to
972 * @param subsystem name of subsystem that created the statistic
973 * @param name the name of the datum
974 * @param value the current value
975 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
976 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
979 successor_stats_iterator (void *cls,
980 const struct GNUNET_TESTBED_Peer *peer,
981 const char *subsystem,
986 static const char *key_string = "XDHT";
987 if (0 == strncmp (key_string, name, strlen (key_string)))
990 char successor_str[13];
991 char truncated_my_id_str[13];
992 char truncated_successor_str[13];
993 struct GNUNET_HashCode *my_id_key;
994 struct GNUNET_HashCode *succ_key;
996 strtok((char *)name,":");
997 my_id_str = strtok(NULL,":");
999 strncpy(truncated_my_id_str, my_id_str, 12);
1000 truncated_my_id_str[12] = '\0';
1001 my_id_key = GNUNET_new(struct GNUNET_HashCode);
1002 GNUNET_CRYPTO_hash (truncated_my_id_str, sizeof(truncated_my_id_str),my_id_key);
1003 GNUNET_STRINGS_data_to_string(&value, sizeof(uint64_t), successor_str, 13);
1004 strncpy(truncated_successor_str, successor_str, 12);
1005 truncated_successor_str[12] ='\0';
1007 succ_key = GNUNET_new(struct GNUNET_HashCode);
1008 GNUNET_CRYPTO_hash (truncated_successor_str, sizeof(truncated_successor_str),succ_key);
1012 start_key = my_id_key;
1015 /* FIXME: GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE do not free the value
1016 which is replaced, need to free it. */
1017 GNUNET_CONTAINER_multihashmap_put (successor_peer_hashmap,
1018 my_id_key, (void *)succ_key,
1019 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1026 * Task that collects peer and its corresponding successors.
1028 * @param cls Closure (NULL).
1029 * @param tc Task Context.
1032 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1034 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
1037 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start collecting statistics...\n");
1038 GNUNET_assert(NULL != testbed_handles);
1039 successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
1041 successor_stats_op =
1042 GNUNET_TESTBED_get_statistics (num_peers, testbed_handles,
1044 successor_stats_iterator,
1045 successor_stats_cont, cls);
1047 GNUNET_assert(NULL != successor_stats_op);
1051 #if ENABLE_MALICIOUS
1053 * Set the malicious variable in peer malicious context.
1059 DEBUG ("Setting %u peers malicious");
1060 for(i = 0; i < n_malicious; i++)
1062 struct MaliciousContext *mc = &a_mc[i];
1064 GNUNET_TESTBED_service_connect (ac->ctx,
1067 &dht_set_malicious, mc,
1077 * Callback called when DHT service on the peer is started
1079 * @param cls the context
1080 * @param op the operation that has been finished
1081 * @param emsg error message in case the operation has failed; will be NULL if
1082 * operation has executed successfully.
1085 service_started (void *cls,
1086 struct GNUNET_TESTBED_Operation *op,
1089 struct Context *ctx = cls;
1091 GNUNET_assert (NULL != ctx);
1092 GNUNET_assert (NULL != ctx->op);
1093 GNUNET_TESTBED_operation_done (ctx->op);
1096 DEBUG("Peers Started = %d; num_peers = %d \n", peers_started, num_peers);
1097 if (GNUNET_SCHEDULER_NO_TASK == successor_stats_task && peers_started == num_peers)
1099 #if ENABLE_MALICIOUS
1102 DEBUG("successor_stats_task \n");
1103 struct Collect_Stat_Context *collect_stat_cls = GNUNET_new(struct Collect_Stat_Context);
1104 collect_stat_cls->service_connect_ctx = cls;
1105 collect_stat_cls->op = op;
1106 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay_stats,
1114 * Signature of a main function for a testcase.
1116 * @param cls closure
1117 * @param h the run handle
1118 * @param num_peers number of peers in 'peers'
1119 * @param peers handle to peers run in the testbed
1120 * @param links_succeeded the number of overlay link connection attempts that
1122 * @param links_failed the number of overlay link
1125 test_run (void *cls,
1126 struct GNUNET_TESTBED_RunHandle *h,
1127 unsigned int num_peers, struct GNUNET_TESTBED_Peer **peers,
1128 unsigned int links_succeeded,
1129 unsigned int links_failed)
1132 unsigned int ac_cnt;
1134 testbed_handles = peers;
1140 INFO ("%u peers started\n", num_peers);
1141 a_ctx = GNUNET_malloc (sizeof (struct Context) * num_peers);
1143 /* select the peers which actively participate in profiling */
1144 n_active = num_peers * PUT_PROBABILITY / 100;
1147 GNUNET_SCHEDULER_shutdown ();
1148 GNUNET_free (a_ctx);
1152 #if ENABLE_MALICIOUS
1154 if(PUT_PROBABILITY + MALICIOUS_PEERS > 100)
1156 DEBUG ("Reduce either number of malicious peer or active peers. ");
1157 GNUNET_SCHEDULER_shutdown ();
1158 GNUNET_free (a_ctx);
1162 /* Select the peers which should act maliciously. */
1163 n_malicious = num_peers * MALICIOUS_PEERS / 100;
1165 /* Select n_malicious peers and ensure that those are not active peers.
1166 keep all malicious peer at one place, and call act malicious for all
1171 a_ac = GNUNET_malloc (n_active * sizeof (struct ActiveContext));
1173 for (cnt = 0; cnt < num_peers && ac_cnt < n_active; cnt++)
1175 if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
1178 a_ctx[cnt].ac = &a_ac[ac_cnt];
1179 a_ac[ac_cnt].ctx = &a_ctx[cnt];
1183 INFO ("Active peers: %u\n", n_active);
1185 /* start DHT service on all peers */
1186 for (cnt = 0; cnt < num_peers; cnt++)
1188 a_ctx[cnt].peer = peers[cnt];
1189 a_ctx[cnt].op = GNUNET_TESTBED_peer_manage_service (&a_ctx[cnt],
1200 * Main function that will be run by the scheduler.
1202 * @param cls closure
1203 * @param args remaining command-line arguments
1204 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
1205 * @param config configuration
1208 run (void *cls, char *const *args, const char *cfgfile,
1209 const struct GNUNET_CONFIGURATION_Handle *config)
1211 uint64_t event_mask;
1215 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Exiting as the number of peers is %u\n"),
1219 cfg = GNUNET_CONFIGURATION_dup (config);
1221 GNUNET_TESTBED_run (hosts_file, cfg, num_peers, event_mask, NULL,
1222 NULL, &test_run, NULL);
1223 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &do_shutdown,
1231 * @return 0 on success
1234 main (int argc, char *const *argv)
1238 static struct GNUNET_GETOPT_CommandLineOption options[] = {
1239 {'n', "peers", "COUNT",
1240 gettext_noop ("number of peers to start"),
1241 1, &GNUNET_GETOPT_set_uint, &num_peers},
1242 {'s', "searches", "COUNT",
1243 gettext_noop ("maximum number of times we try to search for successor circle formation (default is 1)"),
1244 1, &GNUNET_GETOPT_set_uint, &max_searches},
1245 {'H', "hosts", "FILENAME",
1246 gettext_noop ("name of the file with the login information for the testbed"),
1247 1, &GNUNET_GETOPT_set_string, &hosts_file},
1248 {'D', "delay", "DELAY",
1249 gettext_noop ("delay between rounds for collecting statistics (default: 30 sec)"),
1250 1, &GNUNET_GETOPT_set_relative_time, &delay_stats},
1251 {'P', "PUT-delay", "DELAY",
1252 gettext_noop ("delay to start doing PUTs (default: 1 sec)"),
1253 1, &GNUNET_GETOPT_set_relative_time, &delay_put},
1254 {'G', "GET-delay", "DELAY",
1255 gettext_noop ("delay to start doing GETs (default: 5 min)"),
1256 1, &GNUNET_GETOPT_set_relative_time, &delay_get},
1257 {'r', "replication", "DEGREE",
1258 gettext_noop ("replication degree for DHT PUTs"),
1259 1, &GNUNET_GETOPT_set_uint, &replication},
1260 {'t', "timeout", "TIMEOUT",
1261 gettext_noop ("timeout for DHT PUT and GET requests (default: 1 min)"),
1262 1, &GNUNET_GETOPT_set_relative_time, &timeout},
1263 GNUNET_GETOPT_OPTION_END
1267 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1269 /* set default delays */
1270 delay_stats = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1);
1271 delay_put = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1);
1272 delay_get = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 1);
1273 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MINUTES, 5);
1274 replication = 1; /* default replication */
1277 GNUNET_PROGRAM_run (argc, argv, "dht-profiler",
1279 ("Measure quality and performance of the DHT service."),
1280 options, &run, NULL))