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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__)
47 * The testbed operation handle
49 struct GNUNET_TESTBED_Operation *op;
52 * Context information for GNUNET_TESTBED_run()
54 struct RunContext *rc;
62 * The next pointer for DLL
64 struct DLLOperation *next;
67 * The prev pointer for DLL
69 struct DLLOperation *prev;
74 * States of RunContext
84 * Controllers on given hosts started and linked
89 * The testbed run is ready and the master callback can be called now. At this
90 * time the peers are all started and if a topology is provided in the
91 * configuration the topology would have been attempted
101 * Peers are destroyed
113 * The controller handle
115 struct GNUNET_TESTBED_Controller *c;
118 * The configuration of the controller. This is based on the cfg given to the
119 * function GNUNET_TESTBED_run(). We also use this config as a template while
122 struct GNUNET_CONFIGURATION_Handle *cfg;
125 * Handle to the host on which the controller runs
127 struct GNUNET_TESTBED_Host *h;
130 * The handle to the controller process
132 struct GNUNET_TESTBED_ControllerProc *cproc;
135 * The callback to use as controller callback
137 GNUNET_TESTBED_ControllerCallback cc;
140 * The pointer to the controller callback
145 * TestMaster callback to call when testbed initialization is done
147 GNUNET_TESTBED_TestMaster test_master;
150 * The closure for the TestMaster callback
152 void *test_master_cls;
155 * The head element of DLL operations
157 struct DLLOperation *dll_op_head;
160 * The tail element of DLL operations
162 struct DLLOperation *dll_op_tail;
165 * An array of hosts loaded from the hostkeys file
167 struct GNUNET_TESTBED_Host **hosts;
170 * The handle for whether a host is habitable or not
172 struct GNUNET_TESTBED_HostHabitableCheckHandle **hc_handles;
175 * Array of peers which we create
177 struct GNUNET_TESTBED_Peer **peers;
180 * The topology generation operation. Will be null if no topology is set in
183 struct GNUNET_TESTBED_Operation *topology_operation;
186 * The file containing topology data. Only used if the topology is set to 'FROM_FILE'
191 * Host registration handle
193 struct GNUNET_TESTBED_HostRegistrationHandle *reg_handle;
196 * Host registration task
198 GNUNET_SCHEDULER_TaskIdentifier register_hosts_task;
201 * Task to be run while shutting down
203 GNUNET_SCHEDULER_TaskIdentifier shutdown_run_task;
206 * The event mask for the controller
211 * State of this context
216 * The topology which has to be achieved with the peers started in this context
218 enum GNUNET_TESTBED_TopologyOption topology;
221 * Number of hosts in the given host file
223 unsigned int num_hosts;
226 * Number of registered hosts. Also used as a counter while checking
227 * habitabillity of hosts
229 unsigned int reg_hosts;
232 * Current peer count for an operation; Set this to 0 and increment for each
233 * successful operation on a peer
235 unsigned int peer_count;
238 * number of peers to start
240 unsigned int num_peers;
243 * counter to count overlay connect attempts. This counter includes both
244 * successful and failed overlay connects
246 unsigned int oc_count;
249 * Expected overlay connects. Should be zero if no topology is relavant
254 * Number of random links to established
256 unsigned int random_links;
262 * Task for starting peers
264 * @param cls the RunHandle
265 * @param tc the task context from scheduler
268 start_peers_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
270 struct RunContext *rc = cls;
271 struct DLLOperation *dll_op;
274 LOG (GNUNET_ERROR_TYPE_DEBUG, "Starting Peers\n");
275 for (peer = 0; peer < rc->num_peers; peer++)
277 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
278 dll_op->op = GNUNET_TESTBED_peer_start (NULL, rc->peers[peer], NULL, NULL);
279 dll_op->cls = rc->peers[peer];
280 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
287 * Functions of this signature are called when a peer has been successfully
290 * @param cls the closure from GNUNET_TESTBED_peer_create()
291 * @param peer the handle for the created peer; NULL on any error during
293 * @param emsg NULL if peer is not NULL; else MAY contain the error description
296 peer_create_cb (void *cls, struct GNUNET_TESTBED_Peer *peer, const char *emsg)
298 struct DLLOperation *dll_op = cls;
299 struct RunContext *rc;
301 GNUNET_assert (NULL != dll_op);
303 GNUNET_assert (NULL != rc);
304 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
305 GNUNET_TESTBED_operation_done (dll_op->op);
306 GNUNET_free (dll_op);
310 LOG (GNUNET_ERROR_TYPE_WARNING, "Error while creating a peer: %s\n",
312 /* FIXME: GNUNET_TESTBED_shutdown_run()? */
315 rc->peers[rc->peer_count] = peer;
317 if (rc->peer_count < rc->num_peers)
319 LOG (GNUNET_ERROR_TYPE_DEBUG, "Required peers created successfully\n");
320 GNUNET_SCHEDULER_add_now (&start_peers_task, rc);
325 * Assuming all peers have been destroyed cleanup run handle
327 * @param cls the run handle
328 * @param tc the task context from scheduler
331 cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
333 struct RunContext *rc = cls;
334 struct DLLOperation *dll_op;
337 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == rc->register_hosts_task);
338 GNUNET_assert (NULL == rc->reg_handle);
339 GNUNET_assert (NULL == rc->peers);
340 GNUNET_assert (NULL == rc->hc_handles);
341 GNUNET_assert (RC_PEERS_DESTROYED == rc->state);
343 GNUNET_TESTBED_controller_disconnect (rc->c);
344 if (NULL != rc->cproc)
345 GNUNET_TESTBED_controller_stop (rc->cproc);
347 GNUNET_TESTBED_host_destroy (rc->h);
348 for (hid = 0; hid < rc->num_hosts; hid++)
349 GNUNET_TESTBED_host_destroy (rc->hosts[hid]);
350 GNUNET_free_non_null (rc->hosts);
351 if (NULL != rc->dll_op_head)
353 LOG (GNUNET_ERROR_TYPE_WARNING,
354 _("Some operations are still pending. Cancelling them\n"));
355 while (NULL != (dll_op = rc->dll_op_head))
357 GNUNET_TESTBED_operation_done (dll_op->op);
358 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
359 GNUNET_free (dll_op);
363 GNUNET_CONFIGURATION_destroy (rc->cfg);
364 GNUNET_free_non_null (rc->topo_file);
370 * Stops the testbed run and releases any used resources
372 * @param cls the tesbed run handle
373 * @param tc the task context from scheduler
376 shutdown_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
380 * Function to shutdown now
382 * @param rc the RunContext
385 shutdown_now (struct RunContext *rc)
387 if (GNUNET_SCHEDULER_NO_TASK != rc->shutdown_run_task)
388 GNUNET_SCHEDULER_cancel (rc->shutdown_run_task);
389 rc->shutdown_run_task = GNUNET_SCHEDULER_add_now (&shutdown_run, rc);
394 * Stops the testbed run and releases any used resources
396 * @param cls the tesbed run handle
397 * @param tc the task context from scheduler
400 shutdown_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
402 struct RunContext *rc = cls;
403 struct DLLOperation *dll_op;
407 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != rc->shutdown_run_task);
408 rc->shutdown_run_task = GNUNET_SCHEDULER_NO_TASK;
409 if (NULL != rc->hc_handles)
411 for (nhost = 0; nhost < rc->num_hosts; nhost++)
412 if (NULL != rc->hc_handles[nhost])
413 GNUNET_TESTBED_is_host_habitable_cancel (rc->hc_handles[nhost]);
414 GNUNET_free (rc->hc_handles);
415 rc->hc_handles = NULL;
417 /* Stop register hosts task if it is running */
418 if (GNUNET_SCHEDULER_NO_TASK != rc->register_hosts_task)
420 GNUNET_SCHEDULER_cancel (rc->register_hosts_task);
421 rc->register_hosts_task = GNUNET_SCHEDULER_NO_TASK;
423 if (NULL != rc->reg_handle)
425 GNUNET_TESTBED_cancel_registration (rc->reg_handle);
426 rc->reg_handle = NULL;
430 if (NULL != rc->peers)
432 if (NULL != rc->topology_operation)
434 GNUNET_TESTBED_operation_done (rc->topology_operation);
435 rc->topology_operation = NULL;
437 if (RC_INIT == rc->state)
438 rc->state = RC_READY; /* Even though we haven't called the master callback */
440 /* Check if some peers are stopped */
441 for (peer = 0; peer < rc->num_peers; peer++)
443 if (PS_STOPPED != rc->peers[peer]->state)
446 if (peer == rc->num_peers)
448 /* All peers are stopped */
449 rc->state = RC_PEERS_STOPPED;
450 for (peer = 0; peer < rc->num_peers; peer++)
452 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
453 dll_op->op = GNUNET_TESTBED_peer_destroy (rc->peers[peer]);
454 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
459 /* Some peers are stopped */
460 for (peer = 0; peer < rc->num_peers; peer++)
462 if (PS_STARTED != rc->peers[peer]->state)
467 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
468 dll_op->op = GNUNET_TESTBED_peer_stop (rc->peers[peer], NULL, NULL);
469 dll_op->cls = rc->peers[peer];
470 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
473 if (rc->peer_count != rc->num_peers)
477 rc->state = RC_PEERS_DESTROYED; /* No peers are present so we consider the
478 * state where all peers are destroyed */
479 GNUNET_SCHEDULER_add_now (&cleanup_task, rc);
484 * Task to call master task
486 * @param cls the run context
487 * @param tc the task context
490 call_master (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
492 struct RunContext *rc = cls;
494 if (NULL != rc->topology_operation)
496 GNUNET_TESTBED_operation_done (rc->topology_operation);
497 rc->topology_operation = NULL;
499 if (NULL != rc->test_master)
500 rc->test_master (rc->test_master_cls, rc->num_peers, rc->peers);
505 * Function to create peers
507 * @param rc the RunContext
510 create_peers (struct RunContext *rc)
512 struct DLLOperation *dll_op;
516 GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Peer *) * rc->num_peers);
517 GNUNET_assert (NULL != rc->c);
519 for (peer = 0; peer < rc->num_peers; peer++)
521 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
524 GNUNET_TESTBED_peer_create (rc->c,
526 ? rc->h : rc->hosts[peer % rc->num_hosts],
528 peer_create_cb, dll_op);
529 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
535 * Signature of the event handler function called by the
536 * respective event controller.
539 * @param event information about the event
542 event_cb (void *cls, const struct GNUNET_TESTBED_EventInformation *event)
544 struct RunContext *rc = cls;
545 struct DLLOperation *dll_op;
546 unsigned int peer_id;
548 if (RC_INIT == rc->state)
552 case GNUNET_TESTBED_ET_OPERATION_FINISHED:
553 dll_op = event->details.operation_finished.op_cls;
554 if (NULL != event->details.operation_finished.emsg)
556 LOG (GNUNET_ERROR_TYPE_ERROR,
557 _("Linking controllers failed. Exiting"));
562 GNUNET_assert (event->details.operation_finished.operation == dll_op->op);
563 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
564 GNUNET_TESTBED_operation_done (dll_op->op);
565 GNUNET_free (dll_op);
566 if (rc->reg_hosts == rc->num_hosts)
568 rc->state = RC_LINKED;
578 if (NULL != rc->topology_operation)
582 case GNUNET_TESTBED_ET_OPERATION_FINISHED:
583 case GNUNET_TESTBED_ET_CONNECT:
591 if (rc->oc_count == rc->num_oc)
593 rc->state = RC_READY;
594 GNUNET_SCHEDULER_add_continuation (&call_master, rc,
595 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
599 if ((RC_LINKED < rc->state) &&
600 ((GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type) ||
601 (GNUNET_TESTBED_ET_PEER_STOP == event->type)))
603 for (dll_op = rc->dll_op_head; NULL != dll_op; dll_op = dll_op->next)
605 if ((GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type) &&
606 (event->details.operation_finished.operation == dll_op->op))
608 if ((GNUNET_TESTBED_ET_PEER_STOP == event->type) &&
609 (event->details.peer_stop.peer == dll_op->cls))
614 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
615 GNUNET_TESTBED_operation_done (dll_op->op);
616 GNUNET_free (dll_op);
618 if (rc->peer_count < rc->num_peers)
623 rc->state = RC_PEERS_STOPPED;
625 for (peer_id = 0; peer_id < rc->num_peers; peer_id++)
627 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
628 dll_op->op = GNUNET_TESTBED_peer_destroy (rc->peers[peer_id]);
629 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail,
633 case RC_PEERS_STOPPED:
634 rc->state = RC_PEERS_DESTROYED;
635 GNUNET_free (rc->peers);
637 LOG (GNUNET_ERROR_TYPE_DEBUG, "All peers successfully destroyed\n");
638 GNUNET_SCHEDULER_add_now (&cleanup_task, rc);
647 if ((0 != (rc->event_mask & (1LL << event->type))) && (NULL != rc->cc))
648 rc->cc (rc->cc_cls, event);
649 if (GNUNET_TESTBED_ET_PEER_START != event->type)
651 for (dll_op = rc->dll_op_head; NULL != dll_op; dll_op = dll_op->next)
652 if ((NULL != dll_op->cls) &&
653 (event->details.peer_start.peer == dll_op->cls))
655 GNUNET_assert (NULL != dll_op);
656 GNUNET_CONTAINER_DLL_remove (rc->dll_op_head, rc->dll_op_tail, dll_op);
657 GNUNET_TESTBED_operation_done (dll_op->op);
658 GNUNET_free (dll_op);
660 if (rc->peer_count < rc->num_peers)
662 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peers started successfully\n");
663 if (GNUNET_TESTBED_TOPOLOGY_NONE != rc->topology)
665 if ( (GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI == rc->topology)
666 || (GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING == rc->topology)
667 || (GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD == rc->topology))
669 rc->topology_operation =
670 GNUNET_TESTBED_overlay_configure_topology (NULL,
676 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
678 else if (GNUNET_TESTBED_TOPOLOGY_FROM_FILE == rc->topology)
680 GNUNET_assert (NULL != rc->topo_file);
681 rc->topology_operation =
682 GNUNET_TESTBED_overlay_configure_topology (NULL,
688 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
691 rc->topology_operation =
692 GNUNET_TESTBED_overlay_configure_topology (NULL,
697 GNUNET_TESTBED_TOPOLOGY_OPTION_END);
698 if (NULL == rc->topology_operation)
699 LOG (GNUNET_ERROR_TYPE_WARNING,
700 "Not generating topology. Check number of peers\n");
704 rc->state = RC_READY;
705 GNUNET_SCHEDULER_add_continuation (&call_master, rc,
706 GNUNET_SCHEDULER_REASON_PREREQ_DONE);
711 * Task to register all hosts available in the global host list
713 * @param cls the RunContext
714 * @param tc the scheduler task context
717 register_hosts (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
721 * Callback which will be called to after a host registration succeeded or failed
723 * @param cls the closure
724 * @param emsg the error message; NULL if host registration is successful
727 host_registration_completion (void *cls, const char *emsg)
729 struct RunContext *rc = cls;
731 rc->reg_handle = NULL;
734 LOG (GNUNET_ERROR_TYPE_WARNING,
735 _("Host registration failed for a host. Error: %s\n"), emsg);
739 rc->register_hosts_task = GNUNET_SCHEDULER_add_now (®ister_hosts, rc);
744 * Task to register all hosts available in the global host list
746 * @param cls RunContext
747 * @param tc the scheduler task context
750 register_hosts (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
752 struct RunContext *rc = cls;
753 struct DLLOperation *dll_op;
756 rc->register_hosts_task = GNUNET_SCHEDULER_NO_TASK;
757 if (rc->reg_hosts == rc->num_hosts)
759 LOG (GNUNET_ERROR_TYPE_DEBUG,
760 "All hosts successfully registered\n");
762 for (slave = 0; slave < rc->num_hosts; slave++)
764 dll_op = GNUNET_malloc (sizeof (struct DLLOperation));
766 dll_op->op = GNUNET_TESTBED_controller_link (dll_op,
772 GNUNET_CONTAINER_DLL_insert_tail (rc->dll_op_head, rc->dll_op_tail, dll_op);
777 rc->reg_handle = GNUNET_TESTBED_register_host (rc->c,
778 rc->hosts[rc->reg_hosts++],
779 host_registration_completion,
785 * Callback to signal successfull startup of the controller process
787 * @param cls the closure from GNUNET_TESTBED_controller_start()
788 * @param cfg the configuration with which the controller has been started;
789 * NULL if status is not GNUNET_OK
790 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
791 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
794 controller_status_cb (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg,
797 struct RunContext *rc = cls;
800 if (status != GNUNET_OK)
805 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Testbed startup failed\n");
812 GNUNET_CONFIGURATION_destroy (rc->cfg);
813 rc->cfg = GNUNET_CONFIGURATION_dup (cfg);
814 event_mask = rc->event_mask;
815 event_mask |= (1LL << GNUNET_TESTBED_ET_PEER_STOP);
816 event_mask |= (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED);
817 event_mask |= (1LL << GNUNET_TESTBED_ET_PEER_START);
818 if (rc->topology < GNUNET_TESTBED_TOPOLOGY_NONE)
819 event_mask |= GNUNET_TESTBED_ET_CONNECT;
821 GNUNET_TESTBED_controller_connect (rc->cfg, rc->h, event_mask, &event_cb, rc);
822 if (0 < rc->num_hosts)
824 rc->register_hosts_task = GNUNET_SCHEDULER_add_now (®ister_hosts, rc);
827 rc->state = RC_LINKED;
833 * Callbacks of this type are called by GNUNET_TESTBED_is_host_habitable to
834 * inform whether the given host is habitable or not. The Handle returned by
835 * GNUNET_TESTBED_is_host_habitable() is invalid after this callback is called
838 * @param host the host whose status is being reported; will be NULL if the host
839 * given to GNUNET_TESTBED_is_host_habitable() is NULL
840 * @param status GNUNET_YES if it is habitable; GNUNET_NO if not
843 host_habitable_cb (void *cls, const struct GNUNET_TESTBED_Host *host, int status)
845 struct RunContext *rc = cls;
848 for (nhost = 0; nhost < rc->num_hosts; nhost++)
850 if (host == rc->hosts[nhost])
853 GNUNET_assert (nhost != rc->num_hosts);
854 rc->hc_handles[nhost] = NULL;
855 if (GNUNET_NO == status)
857 if ((NULL != host) && (NULL != GNUNET_TESTBED_host_get_hostname (host)))
858 LOG (GNUNET_ERROR_TYPE_ERROR, _("Host %s cannot start testbed\n"),
859 GNUNET_TESTBED_host_get_hostname (host));
861 LOG (GNUNET_ERROR_TYPE_ERROR, _("Testbed cannot be started on localhost\n"));
866 if (rc->reg_hosts < rc->num_hosts)
868 GNUNET_free (rc->hc_handles);
869 rc->hc_handles = NULL;
870 rc->h = rc->hosts[0];
872 if (0 < rc->num_hosts)
873 rc->hosts = &rc->hosts[1];
876 GNUNET_free (rc->hosts);
879 /* FIXME: If we are starting controller on different host 127.0.0.1 may not ab
882 GNUNET_TESTBED_controller_start ("127.0.0.1", rc->h, rc->cfg,
883 &controller_status_cb, rc);
884 if (NULL == rc->cproc)
886 LOG (GNUNET_ERROR_TYPE_ERROR, _("Cannot start the master controller"));
893 * Convenience method for running a testbed with
894 * a single call. Underlay and overlay topology
895 * are configured using the "UNDERLAY" and "OVERLAY"
896 * options in the "[testbed]" section of the configuration\
897 * (with possible options given in "UNDERLAY_XXX" and/or
900 * The testbed is to be terminated using a call to
901 * "GNUNET_SCHEDULER_shutdown".
903 * @param host_filename name of the file with the 'hosts', NULL
904 * to run everything on 'localhost'
905 * @param cfg configuration to use (for testbed, controller and peers)
906 * @param num_peers number of peers to start; FIXME: maybe put that ALSO into cfg?
907 * @param event_mask bit mask with set of events to call 'cc' for;
908 * or-ed values of "1LL" shifted by the
909 * respective 'enum GNUNET_TESTBED_EventType'
910 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) || ...")
911 * @param cc controller callback to invoke on events; This callback is called
912 * for all peer start events even if GNUNET_TESTBED_ET_PEER_START isn't
913 * set in the event_mask as this is the only way get access to the
914 * handle of each peer
915 * @param cc_cls closure for cc
916 * @param test_master this callback will be called once the test is ready
917 * @param test_master_cls closure for 'test_master'.
920 GNUNET_TESTBED_run (const char *host_filename,
921 const struct GNUNET_CONFIGURATION_Handle *cfg,
922 unsigned int num_peers, uint64_t event_mask,
923 GNUNET_TESTBED_ControllerCallback cc, void *cc_cls,
924 GNUNET_TESTBED_TestMaster test_master,
925 void *test_master_cls)
927 struct RunContext *rc;
929 unsigned long long random_links;
933 GNUNET_assert (num_peers > 0);
934 rc = GNUNET_malloc (sizeof (struct RunContext));
935 if (NULL != host_filename)
938 GNUNET_TESTBED_hosts_load_from_file (host_filename, &rc->hosts);
939 if (0 == rc->num_hosts)
941 LOG (GNUNET_ERROR_TYPE_WARNING,
942 _("No hosts loaded. Need at least one host\n"));
947 rc->h = GNUNET_TESTBED_host_create (NULL, NULL, 0);
948 rc->cfg = GNUNET_CONFIGURATION_dup (cfg);
949 rc->num_peers = num_peers;
950 rc->event_mask = event_mask;
953 rc->test_master = test_master;
954 rc->test_master_cls = test_master_cls;
956 rc->topology = GNUNET_TESTBED_TOPOLOGY_NONE;
957 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (rc->cfg, "testbed",
961 if (GNUNET_NO == GNUNET_TESTBED_topology_get_ (&rc->topology,
964 GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
965 "testbed", "OVERLAY_TOPLOGY",
966 _("Specified topology must be supported by testbed"));
968 GNUNET_free (topology);
970 switch (rc->topology)
972 case GNUNET_TESTBED_TOPOLOGY_ERDOS_RENYI:
973 case GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD_RING:
974 case GNUNET_TESTBED_TOPOLOGY_SMALL_WORLD:
975 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (rc->cfg, "testbed",
976 "OVERLAY_RANDOM_LINKS",
979 /* OVERLAY option RANDOM & SMALL_WORLD_RING requires OVERLAY_RANDOM_LINKS
980 option to be set to the number of random links to be established */
981 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
982 "testbed", "OVERLAY_RANDOM_LINKS");
985 if (random_links > UINT32_MAX)
987 GNUNET_break (0); /* Too big number */
990 rc->random_links = (unsigned int) random_links;
992 case GNUNET_TESTBED_TOPOLOGY_FROM_FILE:
993 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (rc->cfg, "testbed",
994 "OVERLAY_TOPOLOGY_FILE",
997 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
998 "testbed", "OVERLAY_TOPOLOGY_FILE");
1006 if (NULL != host_filename)
1008 rc->hc_handles = GNUNET_malloc (sizeof (struct
1009 GNUNET_TESTBED_HostHabitableCheckHandle *)
1011 for (nhost = 0; nhost < rc->num_hosts; nhost++)
1013 if (NULL == (rc->hc_handles[nhost] =
1014 GNUNET_TESTBED_is_host_habitable (rc->hosts[nhost], rc->cfg,
1019 for (nhost = 0; nhost < rc->num_hosts; nhost++)
1020 if (NULL != rc->hc_handles[nhost])
1021 GNUNET_TESTBED_is_host_habitable_cancel (rc->hc_handles[nhost]);
1022 GNUNET_free (rc->hc_handles);
1023 rc->hc_handles = NULL;
1030 GNUNET_TESTBED_controller_start ("127.0.0.1", rc->h, rc->cfg,
1031 &controller_status_cb, rc);
1032 rc->shutdown_run_task =
1033 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1039 GNUNET_TESTBED_host_destroy (rc->h);
1040 if (NULL != rc->hosts)
1042 for (hid = 0; hid < rc->num_hosts; hid++)
1043 if (NULL != rc->hosts[hid])
1044 GNUNET_TESTBED_host_destroy (rc->hosts[hid]);
1045 GNUNET_free (rc->hosts);
1051 /* end of testbed_api_testbed.c */