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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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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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 DEBUG("inside bandwidth_stats_iterator()\n");
466 if (0 == strncmp (s_sent, name, strlen (s_sent)))
467 outgoing_bandwidth = outgoing_bandwidth + value;
468 else if (0 == strncmp(s_recv, name, strlen (s_recv)))
469 incoming_bandwidth = incoming_bandwidth + value;
478 INFO ("# PUTS made: %u\n", n_puts);
479 INFO ("# PUTS succeeded: %u\n", n_puts_ok);
480 INFO ("# PUTS failed: %u\n", n_puts_fail);
481 INFO ("# GETS made: %u\n", n_gets);
482 INFO ("# GETS succeeded: %u\n", n_gets_ok);
483 INFO ("# GETS failed: %u\n", n_gets_fail);
484 INFO ("# average_put_path_length: %f\n", average_put_path_length);
485 INFO ("# average_get_path_length: %f\n", average_get_path_length);
487 if (NULL == testbed_handles)
489 INFO ("No peers found\n");
493 bandwidth_stats_op = GNUNET_TESTBED_get_statistics (n_active, testbed_handles,
495 bandwidth_stats_iterator,
496 bandwidth_stats_cont, NULL);
501 * Task to cancel DHT GET.
504 * @param tc scheduler task context
507 cancel_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
509 struct ActiveContext *ac = cls;
510 struct Context *ctx = ac->ctx;
512 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
513 GNUNET_assert (NULL != ac->dht_get);
514 GNUNET_DHT_get_stop (ac->dht_get);
517 GNUNET_assert (NULL != ctx->op);
518 GNUNET_TESTBED_operation_done (ctx->op);
521 DEBUG("inside cancel_get()");
523 /* If profiling is complete, summarize */
524 if (n_active == n_gets_fail + n_gets_ok)
526 average_put_path_length = (double)total_put_path_length/(double)n_active;
527 average_get_path_length = (double)total_get_path_length/(double )n_gets_ok;
534 * Iterator called on each result obtained for a DHT
535 * operation that expects a reply
538 * @param exp when will this value expire
539 * @param key key of the result
540 * @param get_path peers on reply path (or NULL if not recorded)
541 * [0] = datastore's first neighbor, [length - 1] = local peer
542 * @param get_path_length number of entries in @a get_path
543 * @param put_path peers on the PUT path (or NULL if not recorded)
544 * [0] = origin, [length - 1] = datastore
545 * @param put_path_length number of entries in @a put_path
546 * @param type type of the result
547 * @param size number of bytes in @a data
548 * @param data pointer to the result data
552 struct GNUNET_TIME_Absolute exp,
553 const struct GNUNET_HashCode *key,
554 const struct GNUNET_PeerIdentity *get_path,
555 unsigned int get_path_length,
556 const struct GNUNET_PeerIdentity *put_path,
557 unsigned int put_path_length,
558 enum GNUNET_BLOCK_Type type,
559 size_t size, const void *data)
561 struct ActiveContext *ac = cls;
562 struct ActiveContext *get_ac = ac->get_ac;
563 struct Context *ctx = ac->ctx;
565 /* Check the keys of put and get match or not. */
566 GNUNET_assert (0 == memcmp (key, &get_ac->hash, sizeof (struct GNUNET_HashCode)));
567 /* we found the data we are looking for */
568 DEBUG ("We found a GET request; %u remaining\n", n_gets - (n_gets_fail + n_gets_ok)); //FIXME: It always prints 1.
571 GNUNET_DHT_get_stop (ac->dht_get);
573 if (ac->delay_task != GNUNET_SCHEDULER_NO_TASK)
574 GNUNET_SCHEDULER_cancel (ac->delay_task);
575 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
576 GNUNET_assert (NULL != ctx->op);
577 GNUNET_TESTBED_operation_done (ctx->op);
580 total_put_path_length = total_put_path_length + put_path_length;
581 total_get_path_length = total_get_path_length + get_path_length;
583 /* Summarize if profiling is complete */
584 if (n_active == n_gets_fail + n_gets_ok)
586 average_put_path_length = (double)total_put_path_length/(double)n_active;
587 average_get_path_length = (double)total_get_path_length/(double )n_gets_ok;
594 * Task to do DHT GETs
596 * @param cls the active context
597 * @param tc the scheduler task context
600 delayed_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
602 struct ActiveContext *ac = cls;
603 struct ActiveContext *get_ac;
606 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
610 r = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, n_active);
612 if (NULL != get_ac->put_data)
617 DEBUG ("GET_REQUEST_START key %s \n", GNUNET_h2s((struct GNUNET_HashCode *)ac->put_data));
618 ac->dht_get = GNUNET_DHT_get_start (ac->dht,
619 GNUNET_BLOCK_TYPE_TEST,
621 1, /* replication level */
623 NULL, 0, /* extended query and size */
624 get_iter, ac); /* GET iterator and closure
628 /* schedule the timeout task for GET */
629 ac->delay_task = GNUNET_SCHEDULER_add_delayed (timeout, &cancel_get, ac);
634 * Task to teardown the dht connection. We do it as a task because calling
635 * GNUNET_DHT_disconnect() from put_continutation_callback seems illegal (the
636 * put_continuation_callback() is getting called again synchronously). Also,
637 * only free the operation when we are not shutting down; the shutdown task will
638 * clear the operation during shutdown.
640 * @param cls the context
641 * @return tc scheduler task context.
644 teardown_dht_connection (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
646 struct Context *ctx = cls;
647 struct GNUNET_TESTBED_Operation *op;
649 if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
651 GNUNET_assert (NULL != ctx);
652 GNUNET_assert (NULL != (op = ctx->op));
654 GNUNET_TESTBED_operation_done (op);
659 * Queue up a delayed task for doing DHT GET
661 * @param cls the active context
662 * @param success #GNUNET_OK if the PUT was transmitted,
663 * #GNUNET_NO on timeout,
664 * #GNUNET_SYSERR on disconnect from service
665 * after the PUT message was transmitted
666 * (so we don't know if it was received or not)
669 put_cont (void *cls, int success)
671 struct ActiveContext *ac = cls;
672 struct Context *ctx = ac->ctx;
679 GNUNET_assert (NULL != ctx);
680 (void) GNUNET_SCHEDULER_add_now (&teardown_dht_connection, ctx);
685 * Task to do DHT PUTS
687 * @param cls the active context
688 * @param tc the scheduler task context
691 delayed_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
693 struct ActiveContext *ac = cls;
695 ac->delay_task = GNUNET_SCHEDULER_NO_TASK;
696 /* Generate and DHT PUT some random data */
697 ac->put_data_size = 16; /* minimum */
698 ac->put_data_size += GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
700 ac->put_data = GNUNET_malloc (ac->put_data_size);
701 GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
702 ac->put_data, ac->put_data_size);
703 GNUNET_CRYPTO_hash (ac->put_data, ac->put_data_size, &ac->hash);
704 DEBUG ("PUT_REQUEST_START key %s \n", GNUNET_h2s((struct GNUNET_HashCode *)ac->put_data));
705 ac->dht_put = GNUNET_DHT_put (ac->dht, &ac->hash,
708 GNUNET_BLOCK_TYPE_TEST,
711 GNUNET_TIME_UNIT_FOREVER_ABS, /* expiration time */
712 timeout, /* PUT timeout */
713 put_cont, ac); /* continuation and its closure */
719 * Connection to DHT has been established. Call the delay task.
721 * @param cls the active context
722 * @param op the operation that has been finished
723 * @param ca_result the service handle returned from GNUNET_TESTBED_ConnectAdapter()
724 * @param emsg error message in case the operation has failed; will be NULL if
725 * operation has executed successfully.
728 dht_connected (void *cls,
729 struct GNUNET_TESTBED_Operation *op,
733 struct ActiveContext *ac = cls;
734 struct Context *ctx = ac->ctx;
736 GNUNET_assert (NULL != ctx); //FIXME: Fails
737 GNUNET_assert (NULL != ctx->op);
738 GNUNET_assert (ctx->op == op);
739 ac->dht = (struct GNUNET_DHT_Handle *) ca_result;
742 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Connection to DHT service failed: %s\n", emsg);
743 GNUNET_TESTBED_operation_done (ctx->op); /* Calls dht_disconnect() */
751 struct GNUNET_TIME_Relative peer_delay_put;
752 peer_delay_put.rel_value_us =
753 delay_put.rel_value_us +
754 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
755 delay_put.rel_value_us);
756 ac->delay_task = GNUNET_SCHEDULER_add_delayed (peer_delay_put, &delayed_put, ac);
761 struct GNUNET_TIME_Relative peer_delay_get;
762 peer_delay_get.rel_value_us =
763 delay_get.rel_value_us +
764 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
765 delay_get.rel_value_us);
766 ac->delay_task = GNUNET_SCHEDULER_add_delayed (peer_delay_get, &delayed_get, ac);
774 * Connect to DHT service and return the DHT client handler
776 * @param cls the active context
777 * @param cfg configuration of the peer to connect to; will be available until
778 * GNUNET_TESTBED_operation_done() is called on the operation returned
779 * from GNUNET_TESTBED_service_connect()
780 * @return service handle to return in 'op_result', NULL on error
783 dht_connect (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
786 return GNUNET_DHT_connect (cfg, 10);
791 * Connect to DHT services of active peers
798 * Adapter function called to destroy a connection to
801 * @param cls the active context
802 * @param op_result service handle returned from the connect adapter
805 dht_disconnect (void *cls, void *op_result)
807 struct ActiveContext *ac = cls;
809 GNUNET_assert (NULL != ac->dht);
810 GNUNET_assert (ac->dht == op_result);
811 GNUNET_DHT_disconnect (ac->dht);
816 if (GNUNET_YES == in_shutdown)
821 if ((n_puts_ok + n_puts_fail) != n_active)
823 /* Start GETs if all PUTs have been made */
825 //(void) GNUNET_SCHEDULER_add_now (&call_start_profiling, NULL);
829 if ((n_gets_ok + n_gets_fail) != n_active)
837 * Connect to DHT services of active peers
845 DEBUG("GNUNET_TESTBED_service_connect \n");
846 GNUNET_break (GNUNET_YES != in_shutdown);
847 for(i = 0; i < n_active; i++)
849 struct ActiveContext *ac = &a_ac[i];
850 GNUNET_assert (NULL != (ctx = ac->ctx));
851 GNUNET_assert (NULL == ctx->op);
853 GNUNET_TESTBED_service_connect (ctx,
864 hashmap_iterate_remove(void *cls,
865 const struct GNUNET_HashCode *key,
868 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(successor_peer_hashmap, key, value));
873 static unsigned int tries;
876 * Stats callback. Iterate over the hashmap and check if all th peers form
877 * a virtual ring topology.
880 * @param op the operation that has been finished
881 * @param emsg error message in case the operation has failed; will be NULL if
882 * operation has executed successfully.
885 successor_stats_cont (void *cls,
886 struct GNUNET_TESTBED_Operation *op,
889 struct GNUNET_HashCode *val;
890 struct GNUNET_HashCode *start_val;
891 struct GNUNET_HashCode *key;
895 /* Don't schedule the task till we are looking for circle here. */
896 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
897 GNUNET_TESTBED_operation_done (successor_stats_op);
898 successor_stats_op = NULL;
899 if (0 == max_searches)
905 (struct GNUNET_HashCode *) GNUNET_CONTAINER_multihashmap_get(successor_peer_hashmap,
909 for (count = 0; count < num_peers; count++)
912 val = GNUNET_CONTAINER_multihashmap_get (successor_peer_hashmap,
918 /* Remove the entry from hashmap. This is done to take care of loop. */
920 GNUNET_CONTAINER_multihashmap_remove (successor_peer_hashmap,
923 DEBUG ("Failed to remove entry from hashmap\n");
926 /* If a peer has its own identity as its successor. */
927 if (0 == memcmp(key, val, sizeof (struct GNUNET_HashCode)))
933 GNUNET_assert(GNUNET_SYSERR !=
934 GNUNET_CONTAINER_multihashmap_iterate (successor_peer_hashmap,
935 hashmap_iterate_remove,
938 successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
940 //TODO:Check if comparison is correct.
941 if ((start_val == val) && (count == num_peers))
943 DEBUG("CIRCLE COMPLETED after %u tries", tries);
944 //FIXME: FREE HASHMAP.
945 //FIXME: If circle is done, then check that finger table of all the peers
946 //are fill atleast O(log N) and then start with the experiments.
947 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
954 if (max_searches == ++tries)
956 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
957 "Maximum tries %u exceeded while checking successor TOTAL TRIES %u"
958 " cirle formation. Exiting\n",
960 if (GNUNET_SCHEDULER_NO_TASK != successor_stats_task)
962 successor_stats_task = GNUNET_SCHEDULER_NO_TASK;
964 if(GNUNET_SCHEDULER_NO_TASK == successor_stats_task)
974 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay_stats, &collect_stats, cls);
981 * Process successor statistic values.
984 * @param peer the peer the statistic belong to
985 * @param subsystem name of subsystem that created the statistic
986 * @param name the name of the datum
987 * @param value the current value
988 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
989 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
992 successor_stats_iterator (void *cls,
993 const struct GNUNET_TESTBED_Peer *peer,
994 const char *subsystem,
999 static const char *key_string = "XDHT";
1000 if (0 == max_searches)
1003 if (0 == strncmp (key_string, name, strlen (key_string)))
1006 char successor_str[13];
1007 char truncated_my_id_str[13];
1008 char truncated_successor_str[13];
1009 struct GNUNET_HashCode *my_id_key;
1010 struct GNUNET_HashCode *succ_key;
1012 strtok((char *)name,":");
1013 my_id_str = strtok(NULL,":");
1015 strncpy(truncated_my_id_str, my_id_str, 12);
1016 truncated_my_id_str[12] = '\0';
1017 my_id_key = GNUNET_new(struct GNUNET_HashCode);
1018 GNUNET_CRYPTO_hash (truncated_my_id_str, sizeof(truncated_my_id_str),my_id_key);
1019 GNUNET_STRINGS_data_to_string(&value, sizeof(uint64_t), successor_str, 13);
1020 strncpy(truncated_successor_str, successor_str, 12);
1021 truncated_successor_str[12] ='\0';
1023 succ_key = GNUNET_new(struct GNUNET_HashCode);
1024 GNUNET_CRYPTO_hash (truncated_successor_str, sizeof(truncated_successor_str),succ_key);
1028 start_key = my_id_key;
1031 /* FIXME: GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE do not free the value
1032 which is replaced, need to free it. */
1033 GNUNET_CONTAINER_multihashmap_put (successor_peer_hashmap,
1034 my_id_key, (void *)succ_key,
1035 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1042 * Task that collects peer and its corresponding successors.
1044 * @param cls Closure (NULL).
1045 * @param tc Task Context.
1048 collect_stats (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1050 if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
1053 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Start collecting statistics...\n");
1054 GNUNET_assert(NULL != testbed_handles);
1056 if (0 != max_searches)
1057 successor_peer_hashmap = GNUNET_CONTAINER_multihashmap_create (num_peers,
1059 successor_stats_op =
1060 GNUNET_TESTBED_get_statistics (num_peers, testbed_handles,
1062 successor_stats_iterator,
1063 successor_stats_cont, cls);
1065 GNUNET_assert(NULL != successor_stats_op);
1069 #if ENABLE_MALICIOUS
1071 * Set the malicious variable in peer malicious context.
1077 DEBUG ("Setting %u peers malicious");
1078 for(i = 0; i < n_malicious; i++)
1080 struct MaliciousContext *mc = &a_mc[i];
1082 GNUNET_TESTBED_service_connect (ac->ctx,
1085 &dht_set_malicious, mc,
1095 * Callback called when DHT service on the peer is started
1097 * @param cls the context
1098 * @param op the operation that has been finished
1099 * @param emsg error message in case the operation has failed; will be NULL if
1100 * operation has executed successfully.
1103 service_started (void *cls,
1104 struct GNUNET_TESTBED_Operation *op,
1107 struct Context *ctx = cls;
1109 GNUNET_assert (NULL != ctx);
1110 GNUNET_assert (NULL != ctx->op);
1111 GNUNET_TESTBED_operation_done (ctx->op);
1114 DEBUG("Peers Started = %d; num_peers = %d \n", peers_started, num_peers);
1115 if (GNUNET_SCHEDULER_NO_TASK == successor_stats_task && peers_started == num_peers)
1117 #if ENABLE_MALICIOUS
1121 DEBUG("successor_stats_task \n");
1122 struct Collect_Stat_Context *collect_stat_cls = GNUNET_new(struct Collect_Stat_Context);
1123 collect_stat_cls->service_connect_ctx = cls;
1124 collect_stat_cls->op = op;
1125 successor_stats_task = GNUNET_SCHEDULER_add_delayed (delay_stats,
1133 * Signature of a main function for a testcase.
1135 * @param cls closure
1136 * @param h the run handle
1137 * @param num_peers number of peers in 'peers'
1138 * @param peers handle to peers run in the testbed
1139 * @param links_succeeded the number of overlay link connection attempts that
1141 * @param links_failed the number of overlay link
1144 test_run (void *cls,
1145 struct GNUNET_TESTBED_RunHandle *h,
1146 unsigned int num_peers, struct GNUNET_TESTBED_Peer **peers,
1147 unsigned int links_succeeded,
1148 unsigned int links_failed)
1151 unsigned int ac_cnt;
1153 testbed_handles = peers;
1159 INFO ("%u peers started\n", num_peers);
1160 a_ctx = GNUNET_malloc (sizeof (struct Context) * num_peers);
1162 /* select the peers which actively participate in profiling */
1163 n_active = num_peers * PUT_PROBABILITY / 100;
1166 GNUNET_SCHEDULER_shutdown ();
1167 GNUNET_free (a_ctx);
1171 #if ENABLE_MALICIOUS
1173 if(PUT_PROBABILITY + MALICIOUS_PEERS > 100)
1175 DEBUG ("Reduce either number of malicious peer or active peers. ");
1176 GNUNET_SCHEDULER_shutdown ();
1177 GNUNET_free (a_ctx);
1181 /* Select the peers which should act maliciously. */
1182 n_malicious = num_peers * MALICIOUS_PEERS / 100;
1184 /* Select n_malicious peers and ensure that those are not active peers.
1185 keep all malicious peer at one place, and call act malicious for all
1190 a_ac = GNUNET_malloc (n_active * sizeof (struct ActiveContext));
1192 for (cnt = 0; cnt < num_peers && ac_cnt < n_active; cnt++)
1194 if (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, 100) >=
1197 a_ctx[cnt].ac = &a_ac[ac_cnt];
1198 a_ac[ac_cnt].ctx = &a_ctx[cnt];
1202 INFO ("Active peers: %u\n", n_active);
1204 /* start DHT service on all peers */
1205 for (cnt = 0; cnt < num_peers; cnt++)
1207 a_ctx[cnt].peer = peers[cnt];
1208 a_ctx[cnt].op = GNUNET_TESTBED_peer_manage_service (&a_ctx[cnt],
1219 * Main function that will be run by the scheduler.
1221 * @param cls closure
1222 * @param args remaining command-line arguments
1223 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
1224 * @param config configuration
1227 run (void *cls, char *const *args, const char *cfgfile,
1228 const struct GNUNET_CONFIGURATION_Handle *config)
1230 uint64_t event_mask;
1234 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Exiting as the number of peers is %u\n"),
1238 cfg = GNUNET_CONFIGURATION_dup (config);
1240 GNUNET_TESTBED_run (hosts_file, cfg, num_peers, event_mask, NULL,
1241 NULL, &test_run, NULL);
1242 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &do_shutdown,
1250 * @return 0 on success
1253 main (int argc, char *const *argv)
1257 static struct GNUNET_GETOPT_CommandLineOption options[] = {
1258 {'n', "peers", "COUNT",
1259 gettext_noop ("number of peers to start"),
1260 1, &GNUNET_GETOPT_set_uint, &num_peers},
1261 {'s', "searches", "COUNT",
1262 gettext_noop ("maximum number of times we try to search for successor circle formation (default is 1)"),
1263 1, &GNUNET_GETOPT_set_uint, &max_searches},
1264 {'H', "hosts", "FILENAME",
1265 gettext_noop ("name of the file with the login information for the testbed"),
1266 1, &GNUNET_GETOPT_set_string, &hosts_file},
1267 {'D', "delay", "DELAY",
1268 gettext_noop ("delay between rounds for collecting statistics (default: 30 sec)"),
1269 1, &GNUNET_GETOPT_set_relative_time, &delay_stats},
1270 {'P', "PUT-delay", "DELAY",
1271 gettext_noop ("delay to start doing PUTs (default: 1 sec)"),
1272 1, &GNUNET_GETOPT_set_relative_time, &delay_put},
1273 {'G', "GET-delay", "DELAY",
1274 gettext_noop ("delay to start doing GETs (default: 5 min)"),
1275 1, &GNUNET_GETOPT_set_relative_time, &delay_get},
1276 {'r', "replication", "DEGREE",
1277 gettext_noop ("replication degree for DHT PUTs"),
1278 1, &GNUNET_GETOPT_set_uint, &replication},
1279 {'t', "timeout", "TIMEOUT",
1280 gettext_noop ("timeout for DHT PUT and GET requests (default: 1 min)"),
1281 1, &GNUNET_GETOPT_set_relative_time, &timeout},
1282 GNUNET_GETOPT_OPTION_END
1286 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
1288 /* set default delays */
1289 delay_stats = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
1290 delay_put = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
1291 delay_get = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
1292 timeout = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10);
1293 replication = 1; /* default replication */
1296 GNUNET_PROGRAM_run (argc, argv, "dht-profiler",
1298 ("Measure quality and performance of the DHT service."),
1299 options, &run, NULL))