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3 (C) 2008--2012 Christian Grothoff (and other contributing authors)
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22 * @file testbed/testbed_api_testbed.c
23 * @brief high-level testbed management
24 * @author Christian Grothoff
25 * @author Sree Harsha Totakura
29 #include "gnunet_testbed_service.h"
30 #include "testbed_api_peers.h"
31 #include "testbed_api_hosts.h"
32 #include "testbed_api_topology.h"
35 * Generic loggins shorthand
37 #define LOG(kind,...) \
38 GNUNET_log_from (kind, "testbed-api-testbed", __VA_ARGS__)
41 * Opaque handle to an abstract operation to be executed by the testing framework.
43 struct GNUNET_TESTBED_Testbed
48 struct GNUNET_TESTBED_Host **hosts;
51 * The number of hosts in the hosts array
53 unsigned int num_hosts;
56 * The controller handle
58 struct GNUNET_TESTBED_Controller *c;
68 * The testbed operation handle
70 struct GNUNET_TESTBED_Operation *op;
73 * Context information for GNUNET_TESTBED_run()
75 struct RunContext *rc;
83 * The next pointer for DLL
85 struct DLLOperation *next;
88 * The prev pointer for DLL
90 struct DLLOperation *prev;
95 * States of RunContext
105 * Controllers on given hosts started and linked
110 * The testbed run is ready and the master callback can be called now. At this
111 * time the peers are all started and if a topology is provided in the
112 * configuration the topology would have been attempted
122 * Peers are destroyed
134 * The controller handle
136 struct GNUNET_TESTBED_Controller *c;
139 * The configuration of the controller. This is based on the cfg given to the
140 * function GNUNET_TESTBED_run(). We also use this config as a template while
143 struct GNUNET_CONFIGURATION_Handle *cfg;
146 * Handle to the host on which the controller runs
148 struct GNUNET_TESTBED_Host *h;
151 * The handle to the controller process
153 struct GNUNET_TESTBED_ControllerProc *cproc;
156 * The callback to use as controller callback
158 GNUNET_TESTBED_ControllerCallback cc;
161 * The pointer to the controller callback
166 * TestMaster callback to call when testbed initialization is done
168 GNUNET_TESTBED_TestMaster test_master;
171 * The closure for the TestMaster callback
173 void *test_master_cls;
176 * The head element of DLL operations
178 struct DLLOperation *dll_op_head;
181 * The tail element of DLL operations
183 struct DLLOperation *dll_op_tail;
186 * An array of hosts loaded from the hostkeys file
188 struct GNUNET_TESTBED_Host **hosts;
191 * The handle for whether a host is habitable or not
193 struct GNUNET_TESTBED_HostHabitableCheckHandle **hc_handles;
196 * Array of peers which we create
198 struct GNUNET_TESTBED_Peer **peers;
201 * The topology generation operation. Will be null if no topology is set in
204 struct GNUNET_TESTBED_Operation *topology_operation;
207 * The file containing topology data. Only used if the topology is set to 'FROM_FILE'
212 * Host registration handle
214 struct GNUNET_TESTBED_HostRegistrationHandle *reg_handle;
217 * Host registration task
219 GNUNET_SCHEDULER_TaskIdentifier register_hosts_task;
222 * Task to be run while shutting down
224 GNUNET_SCHEDULER_TaskIdentifier shutdown_run_task;
227 * The event mask for the controller
232 * State of this context
237 * The topology which has to be achieved with the peers started in this context
239 enum GNUNET_TESTBED_TopologyOption topology;
242 * Number of hosts in the given host file
244 unsigned int num_hosts;
247 * Number of registered hosts. Also used as a counter while checking
248 * habitabillity of hosts
250 unsigned int reg_hosts;
253 * Current peer count for an operation; Set this to 0 and increment for each
254 * successful operation on a peer
256 unsigned int peer_count;
259 * number of peers to start
261 unsigned int num_peers;
264 * counter to count overlay connect attempts. This counter includes both
265 * successful and failed overlay connects
267 unsigned int oc_count;
270 * Expected overlay connects. Should be zero if no topology is relavant
275 * Number of random links to established
277 unsigned int random_links;
283 * Task for starting peers
285 * @param cls the RunHandle
286 * @param tc the task context from scheduler
289 start_peers_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
291 struct RunContext *rc = cls;
292 struct DLLOperation *dll_op;
295 LOG (GNUNET_ERROR_TYPE_DEBUG, "Starting Peers\n");
296 for (peer = 0; peer < rc->num_peers; peer++)
298 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
299 dll_op->op = GNUNET_TESTBED_peer_start (NULL, rc->peers[peer], NULL, NULL);
300 dll_op->cls = rc->peers[peer];
301 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
308 * Functions of this signature are called when a peer has been successfully
311 * @param cls the closure from GNUNET_TESTBED_peer_create()
312 * @param peer the handle for the created peer; NULL on any error during
314 * @param emsg NULL if peer is not NULL; else MAY contain the error description
317 peer_create_cb (void *cls, struct GNUNET_TESTBED_Peer *peer, const char *emsg)
319 struct DLLOperation *dll_op = cls;
320 struct RunContext *rc;
322 GNUNET_assert (NULL != dll_op);
324 GNUNET_assert (NULL != rc);
325 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
326 GNUNET_TESTBED_operation_done (dll_op->op);
327 GNUNET_free (dll_op);
331 LOG (GNUNET_ERROR_TYPE_WARNING, "Error while creating a peer: %s\n",
333 /* FIXME: GNUNET_TESTBED_shutdown_run()? */
336 rc->peers[rc->peer_count] = peer;
338 if (rc->peer_count < rc->num_peers)
340 LOG (GNUNET_ERROR_TYPE_DEBUG, "Required peers created successfully\n");
341 GNUNET_SCHEDULER_add_now (&start_peers_task, rc);
346 * Assuming all peers have been destroyed cleanup run handle
348 * @param cls the run handle
349 * @param tc the task context from scheduler
352 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
354 struct RunContext *rc = cls;
355 struct DLLOperation *dll_op;
358 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == rc->register_hosts_task);
359 GNUNET_assert (NULL == rc->reg_handle);
360 GNUNET_assert (NULL == rc->peers);
361 GNUNET_assert (NULL == rc->hc_handles);
362 GNUNET_assert (RC_PEERS_DESTROYED == rc->state);
364 GNUNET_TESTBED_controller_disconnect (rc->c);
365 if (NULL != rc->cproc)
366 GNUNET_TESTBED_controller_stop (rc->cproc);
368 GNUNET_TESTBED_host_destroy (rc->h);
369 for (hid = 0; hid < rc->num_hosts; hid++)
370 GNUNET_TESTBED_host_destroy (rc->hosts[hid]);
371 GNUNET_free_non_null (rc->hosts);
372 if (NULL != rc->dll_op_head)
374 LOG (GNUNET_ERROR_TYPE_WARNING,
375 _("Some operations are still pending. Cancelling them\n"));
376 while (NULL != (dll_op = rc->dll_op_head))
378 GNUNET_TESTBED_operation_done (dll_op->op);
379 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
380 GNUNET_free (dll_op);
384 GNUNET_CONFIGURATION_destroy (rc->cfg);
385 GNUNET_free_non_null (rc->topo_file);
391 * Stops the testbed run and releases any used resources
393 * @param cls the tesbed run handle
394 * @param tc the task context from scheduler
397 shutdown_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
401 * Function to shutdown now
403 * @param rc the RunContext
406 shutdown_now (struct RunContext *rc)
408 if (GNUNET_SCHEDULER_NO_TASK != rc->shutdown_run_task)
409 GNUNET_SCHEDULER_cancel (rc->shutdown_run_task);
410 rc->shutdown_run_task = GNUNET_SCHEDULER_add_now (&shutdown_run, rc);
415 * Stops the testbed run and releases any used resources
417 * @param cls the tesbed run handle
418 * @param tc the task context from scheduler
421 shutdown_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
423 struct RunContext *rc = cls;
424 struct DLLOperation *dll_op;
428 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != rc->shutdown_run_task);
429 rc->shutdown_run_task = GNUNET_SCHEDULER_NO_TASK;
430 if (NULL != rc->hc_handles)
432 for (nhost = 0; nhost < rc->num_hosts; nhost++)
433 if (NULL != rc->hc_handles[nhost])
434 GNUNET_TESTBED_is_host_habitable_cancel (rc->hc_handles[nhost]);
435 GNUNET_free (rc->hc_handles);
436 rc->hc_handles = NULL;
438 /* Stop register hosts task if it is running */
439 if (GNUNET_SCHEDULER_NO_TASK != rc->register_hosts_task)
441 GNUNET_SCHEDULER_cancel (rc->register_hosts_task);
442 rc->register_hosts_task = GNUNET_SCHEDULER_NO_TASK;
444 if (NULL != rc->reg_handle)
446 GNUNET_TESTBED_cancel_registration (rc->reg_handle);
447 rc->reg_handle = NULL;
451 if (NULL != rc->peers)
453 if (NULL != rc->topology_operation)
455 GNUNET_TESTBED_operation_done (rc->topology_operation);
456 rc->topology_operation = NULL;
458 if (RC_INIT == rc->state)
459 rc->state = RC_READY; /* Even though we haven't called the master callback */
461 /* Check if some peers are stopped */
462 for (peer = 0; peer < rc->num_peers; peer++)
464 if (PS_STOPPED != rc->peers[peer]->state)
467 if (peer == rc->num_peers)
469 /* All peers are stopped */
470 rc->state = RC_PEERS_STOPPED;
471 for (peer = 0; peer < rc->num_peers; peer++)
473 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
474 dll_op->op = GNUNET_TESTBED_peer_destroy (rc->peers[peer]);
475 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
480 /* Some peers are stopped */
481 for (peer = 0; peer < rc->num_peers; peer++)
483 if (PS_STARTED != rc->peers[peer]->state)
488 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
489 dll_op->op = GNUNET_TESTBED_peer_stop (rc->peers[peer], NULL, NULL);
490 dll_op->cls = rc->peers[peer];
491 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
494 if (rc->peer_count != rc->num_peers)
498 rc->state = RC_PEERS_DESTROYED; /* No peers are present so we consider the
499 * state where all peers are destroyed */
500 GNUNET_SCHEDULER_add_now (&cleanup_task, rc);
505 * Task to call master task
507 * @param cls the run context
508 * @param tc the task context
511 call_master (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
513 struct RunContext *rc = cls;
515 if (NULL != rc->topology_operation)
517 GNUNET_TESTBED_operation_done (rc->topology_operation);
518 rc->topology_operation = NULL;
520 if (NULL != rc->test_master)
521 rc->test_master (rc->test_master_cls, rc->num_peers, rc->peers);
526 * Function to create peers
528 * @param rc the RunContext
531 create_peers (struct RunContext *rc)
533 struct DLLOperation *dll_op;
537 GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Peer *) * rc->num_peers);
538 GNUNET_assert (NULL != rc->c);
540 for (peer = 0; peer < rc->num_peers; peer++)
542 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
545 GNUNET_TESTBED_peer_create (rc->c,
547 ? rc->h : rc->hosts[peer % rc->num_hosts],
549 peer_create_cb, dll_op);
550 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
556 * Signature of the event handler function called by the
557 * respective event controller.
560 * @param event information about the event
563 event_cb (void *cls, const struct GNUNET_TESTBED_EventInformation *event)
565 struct RunContext *rc = cls;
566 struct DLLOperation *dll_op;
567 unsigned int peer_id;
569 if (RC_INIT == rc->state)
573 case GNUNET_TESTBED_ET_OPERATION_FINISHED:
574 dll_op = event->details.operation_finished.op_cls;
575 if (NULL != event->details.operation_finished.emsg)
577 LOG (GNUNET_ERROR_TYPE_ERROR,
578 _("Linking controllers failed. Exiting"));
583 GNUNET_assert (event->details.operation_finished.operation == dll_op->op);
584 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
585 GNUNET_TESTBED_operation_done (dll_op->op);
586 GNUNET_free (dll_op);
587 if (rc->reg_hosts == rc->num_hosts)
589 rc->state = RC_LINKED;
599 if (NULL != rc->topology_operation)
603 case GNUNET_TESTBED_ET_OPERATION_FINISHED:
604 case GNUNET_TESTBED_ET_CONNECT:
612 if (rc->oc_count == rc->num_oc)
614 rc->state = RC_READY;
615 GNUNET_SCHEDULER_add_continuation (&call_master, rc,
616 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
620 if ((RC_LINKED < rc->state) &&
621 ((GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type) ||
622 (GNUNET_TESTBED_ET_PEER_STOP == event->type)))
624 for (dll_op = rc->dll_op_head; NULL != dll_op; dll_op = dll_op->next)
626 if ((GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type) &&
627 (event->details.operation_finished.operation == dll_op->op))
629 if ((GNUNET_TESTBED_ET_PEER_STOP == event->type) &&
630 (event->details.peer_stop.peer == dll_op->cls))
635 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
636 GNUNET_TESTBED_operation_done (dll_op->op);
637 GNUNET_free (dll_op);
639 if (rc->peer_count < rc->num_peers)
644 rc->state = RC_PEERS_STOPPED;
646 for (peer_id = 0; peer_id < rc->num_peers; peer_id++)
648 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
649 dll_op->op = GNUNET_TESTBED_peer_destroy (rc->peers[peer_id]);
650 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
654 case RC_PEERS_STOPPED:
655 rc->state = RC_PEERS_DESTROYED;
656 GNUNET_free (rc->peers);
658 LOG (GNUNET_ERROR_TYPE_DEBUG, "All peers successfully destroyed\n");
659 GNUNET_SCHEDULER_add_now (&cleanup_task, rc);
668 if ((0 != (rc->event_mask & (1LL << event->type))) && (NULL != rc->cc))
669 rc->cc (rc->cc_cls, event);
670 if (GNUNET_TESTBED_ET_PEER_START != event->type)
672 for (dll_op = rc->dll_op_head; NULL != dll_op; dll_op = dll_op->next)
673 if ((NULL != dll_op->cls) &&
674 (event->details.peer_start.peer == dll_op->cls))
676 GNUNET_assert (NULL != dll_op);
677 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
678 GNUNET_TESTBED_operation_done (dll_op->op);
679 GNUNET_free (dll_op);
681 if (rc->peer_count < rc->num_peers)
683 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peers started successfully\n");
684 if (GNUNET_TESTBED_TOPOLOGY_NONE != rc->topology)
686 if ( (GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI == rc->topology)
687 || (GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING == rc->topology)
688 || (GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD == rc->topology))
690 rc->topology_operation =
691 GNUNET_TESTBED_overlay_configure_topology (NULL,
697 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
699 else if (GNUNET_TESTBED_TOPOLOGY_FROM_FILE == rc->topology)
701 GNUNET_assert (NULL != rc->topo_file);
702 rc->topology_operation =
703 GNUNET_TESTBED_overlay_configure_topology (NULL,
709 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
712 rc->topology_operation =
713 GNUNET_TESTBED_overlay_configure_topology (NULL,
718 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
719 if (NULL == rc->topology_operation)
720 LOG (GNUNET_ERROR_TYPE_WARNING,
721 "Not generating topology. Check number of peers\n");
725 rc->state = RC_READY;
726 GNUNET_SCHEDULER_add_continuation (&call_master, rc,
727 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
732 * Task to register all hosts available in the global host list
734 * @param cls the RunContext
735 * @param tc the scheduler task context
738 register_hosts (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
742 * Callback which will be called to after a host registration succeeded or failed
744 * @param cls the closure
745 * @param emsg the error message; NULL if host registration is successful
748 host_registration_completion (void *cls, const char *emsg)
750 struct RunContext *rc = cls;
752 rc->reg_handle = NULL;
755 LOG (GNUNET_ERROR_TYPE_WARNING,
756 _("Host registration failed for a host. Error: %s\n"), emsg);
760 rc->register_hosts_task = GNUNET_SCHEDULER_add_now (®ister_hosts, rc);
765 * Task to register all hosts available in the global host list
767 * @param cls RunContext
768 * @param tc the scheduler task context
771 register_hosts (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
773 struct RunContext *rc = cls;
774 struct DLLOperation *dll_op;
777 rc->register_hosts_task = GNUNET_SCHEDULER_NO_TASK;
778 if (rc->reg_hosts == rc->num_hosts)
780 LOG (GNUNET_ERROR_TYPE_DEBUG,
781 "All hosts successfully registered\n");
783 for (slave = 0; slave < rc->num_hosts; slave++)
785 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
787 dll_op->op = GNUNET_TESTBED_controller_link (dll_op,
793 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
798 rc->reg_handle = GNUNET_TESTBED_register_host (rc->c,
799 rc->hosts[rc->reg_hosts++],
800 host_registration_completion,
806 * Callback to signal successfull startup of the controller process
808 * @param cls the closure from GNUNET_TESTBED_controller_start()
809 * @param cfg the configuration with which the controller has been started;
810 * NULL if status is not GNUNET_OK
811 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
812 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
815 controller_status_cb (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg,
818 struct RunContext *rc = cls;
821 if (status != GNUNET_OK)
826 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Testbed startup failed\n");
833 GNUNET_CONFIGURATION_destroy (rc->cfg);
834 rc->cfg = GNUNET_CONFIGURATION_dup (cfg);
835 event_mask = rc->event_mask;
836 event_mask |= (1LL << GNUNET_TESTBED_ET_PEER_STOP);
837 event_mask |= (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED);
838 event_mask |= (1LL << GNUNET_TESTBED_ET_PEER_START);
839 if (rc->topology < GNUNET_TESTBED_TOPOLOGY_NONE)
840 event_mask |= GNUNET_TESTBED_ET_CONNECT;
842 GNUNET_TESTBED_controller_connect (rc->cfg, rc->h, event_mask, &event_cb, rc);
843 if (0 < rc->num_hosts)
845 rc->register_hosts_task = GNUNET_SCHEDULER_add_now (®ister_hosts, rc);
848 rc->state = RC_LINKED;
854 * Callbacks of this type are called by GNUNET_TESTBED_is_host_habitable to
855 * inform whether the given host is habitable or not. The Handle returned by
856 * GNUNET_TESTBED_is_host_habitable() is invalid after this callback is called
859 * @param host the host whose status is being reported; will be NULL if the host
860 * given to GNUNET_TESTBED_is_host_habitable() is NULL
861 * @param status GNUNET_YES if it is habitable; GNUNET_NO if not
864 host_habitable_cb (void *cls, const struct GNUNET_TESTBED_Host *host, int status)
866 struct RunContext *rc = cls;
869 for (nhost = 0; nhost < rc->num_hosts; nhost++)
871 if (host == rc->hosts[nhost])
874 GNUNET_assert (nhost != rc->num_hosts);
875 rc->hc_handles[nhost] = NULL;
876 if (GNUNET_NO == status)
878 if ((NULL != host) && (NULL != GNUNET_TESTBED_host_get_hostname (host)))
879 LOG (GNUNET_ERROR_TYPE_ERROR, _("Host %s cannot start testbed\n"),
880 GNUNET_TESTBED_host_get_hostname (host));
882 LOG (GNUNET_ERROR_TYPE_ERROR, _("Testbed cannot be started on localhost\n"));
887 if (rc->reg_hosts < rc->num_hosts)
889 GNUNET_free (rc->hc_handles);
890 rc->hc_handles = NULL;
891 rc->h = rc->hosts[0];
893 if (0 < rc->num_hosts)
894 rc->hosts = &rc->hosts[1];
897 GNUNET_free (rc->hosts);
900 /* FIXME: If we are starting controller on different host 127.0.0.1 may not ab
903 GNUNET_TESTBED_controller_start ("127.0.0.1", rc->h, rc->cfg,
904 &controller_status_cb, rc);
905 if (NULL == rc->cproc)
907 LOG (GNUNET_ERROR_TYPE_ERROR, _("Cannot start the master controller"));
914 * Convenience method for running a testbed with
915 * a single call. Underlay and overlay topology
916 * are configured using the "UNDERLAY" and "OVERLAY"
917 * options in the "[testbed]" section of the configuration\
918 * (with possible options given in "UNDERLAY_XXX" and/or
921 * The testbed is to be terminated using a call to
922 * "GNUNET_SCHEDULER_shutdown".
924 * @param host_filename name of the file with the 'hosts', NULL
925 * to run everything on 'localhost'
926 * @param cfg configuration to use (for testbed, controller and peers)
927 * @param num_peers number of peers to start; FIXME: maybe put that ALSO into cfg?
928 * @param event_mask bit mask with set of events to call 'cc' for;
929 * or-ed values of "1LL" shifted by the
930 * respective 'enum GNUNET_TESTBED_EventType'
931 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) || ...")
932 * @param cc controller callback to invoke on events; This callback is called
933 * for all peer start events even if GNUNET_TESTBED_ET_PEER_START isn't
934 * set in the event_mask as this is the only way get access to the
935 * handle of each peer
936 * @param cc_cls closure for cc
937 * @param test_master this callback will be called once the test is ready
938 * @param test_master_cls closure for 'test_master'.
941 GNUNET_TESTBED_run (const char *host_filename,
942 const struct GNUNET_CONFIGURATION_Handle *cfg,
943 unsigned int num_peers, uint64_t event_mask,
944 GNUNET_TESTBED_ControllerCallback cc, void *cc_cls,
945 GNUNET_TESTBED_TestMaster test_master,
946 void *test_master_cls)
948 struct RunContext *rc;
950 unsigned long long random_links;
954 GNUNET_assert (num_peers > 0);
955 rc = GNUNET_malloc (sizeof (struct RunContext));
956 if (NULL != host_filename)
959 GNUNET_TESTBED_hosts_load_from_file (host_filename, &rc->hosts);
960 if (0 == rc->num_hosts)
962 LOG (GNUNET_ERROR_TYPE_WARNING,
963 _("No hosts loaded. Need at least one host\n"));
968 rc->h = GNUNET_TESTBED_host_create (NULL, NULL, 0);
969 rc->cfg = GNUNET_CONFIGURATION_dup (cfg);
970 rc->num_peers = num_peers;
971 rc->event_mask = event_mask;
974 rc->test_master = test_master;
975 rc->test_master_cls = test_master_cls;
977 rc->topology = GNUNET_TESTBED_TOPOLOGY_NONE;
978 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (rc->cfg, "testbed",
982 if (GNUNET_NO == GNUNET_TESTBED_topology_get_ (&rc->topology,
985 LOG (GNUNET_ERROR_TYPE_WARNING,
986 "Unknown topology %s given in configuration\n", topology);
988 GNUNET_free (topology);
990 switch (rc->topology)
992 case GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI:
993 case GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING:
994 case GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD:
995 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (rc->cfg, "testbed",
996 "OVERLAY_RANDOM_LINKS",
999 /* OVERLAY option RANDOM & SMALL_WORLD_RING requires OVERLAY_RANDOM_LINKS
1000 option to be set to the number of random links to be established */
1004 if (random_links > UINT32_MAX)
1006 GNUNET_break (0); /* Too big number */
1009 rc->random_links = (unsigned int) random_links;
1011 case GNUNET_TESTBED_TOPOLOGY_FROM_FILE:
1012 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (rc->cfg, "testbed",
1016 /* You need to set TOPOLOGY_FILE option to a topolog file */
1025 if (NULL != host_filename)
1027 rc->hc_handles = GNUNET_malloc (sizeof (struct
1028 GNUNET_TESTBED_HostHabitableCheckHandle *)
1030 for (nhost = 0; nhost < rc->num_hosts; nhost++)
1032 if (NULL == (rc->hc_handles[nhost] =
1033 GNUNET_TESTBED_is_host_habitable (rc->hosts[nhost], rc->cfg,
1038 for (nhost = 0; nhost < rc->num_hosts; nhost++)
1039 if (NULL != rc->hc_handles[nhost])
1040 GNUNET_TESTBED_is_host_habitable_cancel (rc->hc_handles[nhost]);
1041 GNUNET_free (rc->hc_handles);
1042 rc->hc_handles = NULL;
1049 GNUNET_TESTBED_controller_start ("127.0.0.1", rc->h, rc->cfg,
1050 &controller_status_cb, rc);
1051 rc->shutdown_run_task =
1052 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1058 GNUNET_TESTBED_host_destroy (rc->h);
1059 if (NULL != rc->hosts)
1061 for (hid = 0; hid < rc->num_hosts; hid++)
1062 if (NULL != rc->hosts[hid])
1063 GNUNET_TESTBED_host_destroy (rc->hosts[hid]);
1064 GNUNET_free (rc->hosts);
1071 * Configure and run a testbed using the given
1072 * master controller on 'num_hosts' starting
1073 * 'num_peers' using the given peer configuration.
1075 * @param controller master controller for the testbed
1076 * (must not be destroyed until after the
1077 * testbed is destroyed).
1078 * @param num_hosts number of hosts in 'hosts', 0 to only
1080 * @param hosts list of hosts to use for the testbed
1081 * @param num_peers number of peers to start
1082 * @param cfg the configuration to use as a template for peers and also for
1083 * checking the value of testbed helper binary
1084 * @param underlay_topology underlay topology to create
1085 * @param va topology-specific options
1086 * @return handle to the testbed; NULL upon error (error messaage will be printed)
1088 struct GNUNET_TESTBED_Testbed *
1089 GNUNET_TESTBED_create_va (struct GNUNET_TESTBED_Controller *controller,
1090 unsigned int num_hosts,
1091 struct GNUNET_TESTBED_Host **hosts,
1092 unsigned int num_peers,
1093 const struct GNUNET_CONFIGURATION_Handle *cfg,
1094 enum GNUNET_TESTBED_TopologyOption underlay_topology,
1097 /* unsigned int nhost; */
1099 /* GNUNET_assert (underlay_topology < GNUNET_TESTBED_TOPOLOGY_NONE); */
1100 /* if (num_hosts != 0) */
1102 /* for (nhost = 0; nhost < num_hosts; nhost++) */
1104 /* if (GNUNET_YES != GNUNET_TESTBED_is_host_habitable (hosts[nhost], cfg)) */
1106 /* LOG (GNUNET_ERROR_TYPE_ERROR, _("Host %s cannot start testbed\n"), */
1107 /* GNUNET_TESTBED_host_get_hostname_ (hosts[nhost])); */
1111 /* if (num_hosts != nhost) */
1114 /* We need controller callback here to get operation done events while
1122 * Configure and run a testbed using the given
1123 * master controller on 'num_hosts' starting
1124 * 'num_peers' using the given peer configuration.
1126 * @param controller master controller for the testbed
1127 * (must not be destroyed until after the
1128 * testbed is destroyed).
1129 * @param num_hosts number of hosts in 'hosts', 0 to only
1131 * @param hosts list of hosts to use for the testbed
1132 * @param num_peers number of peers to start
1133 * @param cfg the configuration to use as a template for peers and also for
1134 * checking the value of testbed helper binary
1135 * @param underlay_topology underlay topology to create
1136 * @param ... topology-specific options
1138 struct GNUNET_TESTBED_Testbed *
1139 GNUNET_TESTBED_create (struct GNUNET_TESTBED_Controller *controller,
1140 unsigned int num_hosts,
1141 struct GNUNET_TESTBED_Host **hosts,
1142 unsigned int num_peers,
1143 const struct GNUNET_CONFIGURATION_Handle *cfg,
1144 enum GNUNET_TESTBED_TopologyOption underlay_topology,
1147 struct GNUNET_TESTBED_Testbed *testbed;
1150 va_start (vargs, underlay_topology);
1151 testbed = GNUNET_TESTBED_create_va (controller, num_hosts, hosts, num_peers,
1152 cfg, underlay_topology, vargs);
1159 * Destroy a testbed. Stops all running peers and then
1160 * destroys all peers. Does NOT destroy the master controller.
1162 * @param testbed testbed to destroy
1165 GNUNET_TESTBED_destroy (struct GNUNET_TESTBED_Testbed *testbed)
1171 /* end of testbed_api_testbed.c */