2 This file is part of GNUnet
3 (C) 2008--2013 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file testbed/testbed_api_peers.c
23 * @brief management of the knowledge about peers in this library
24 * (we know the peer ID, its host, pending operations, etc.)
25 * @author Christian Grothoff
26 * @author Sree Harsha Totakura
30 #include "testbed_api_peers.h"
31 #include "testbed_api.h"
33 #include "testbed_api_hosts.h"
34 #include "testbed_api_operations.h"
40 static struct GNUNET_TESTBED_Peer *peer_list_head;
45 static struct GNUNET_TESTBED_Peer *peer_list_tail;
49 * Adds a peer to the peer list
51 * @param peer the peer to add to the peer list
54 GNUNET_TESTBED_peer_register_ (struct GNUNET_TESTBED_Peer *peer)
56 GNUNET_CONTAINER_DLL_insert_tail (peer_list_head, peer_list_tail, peer);
61 * Removes a peer from the peer list
63 * @param peer the peer to remove
66 GNUNET_TESTBED_peer_deregister_ (struct GNUNET_TESTBED_Peer *peer)
68 GNUNET_CONTAINER_DLL_remove (peer_list_head, peer_list_tail, peer);
76 GNUNET_TESTBED_cleanup_peers_ (void)
78 struct GNUNET_TESTBED_Peer *peer;
80 while (NULL != (peer = peer_list_head))
82 GNUNET_TESTBED_peer_deregister_ (peer);
90 * Function to call to start a peer_create type operation once all
91 * queues the operation is part of declare that the
92 * operation can be activated.
94 * @param cls the closure from GNUNET_TESTBED_operation_create_()
97 opstart_peer_create (void *cls)
99 struct OperationContext *opc = cls;
100 struct PeerCreateData *data = opc->data;
101 struct GNUNET_TESTBED_PeerCreateMessage *msg;
108 GNUNET_assert (OP_PEER_CREATE == opc->type);
109 GNUNET_assert (NULL != data);
110 GNUNET_assert (NULL != data->peer);
111 opc->state = OPC_STATE_STARTED;
112 config = GNUNET_CONFIGURATION_serialize (data->cfg, &c_size);
113 xc_size = GNUNET_TESTBED_compress_config_ (config, c_size, &xconfig);
114 GNUNET_free (config);
115 msize = xc_size + sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
116 msg = GNUNET_realloc (xconfig, msize);
117 memmove (&msg[1], msg, xc_size);
118 msg->header.size = htons (msize);
119 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_CREATE_PEER);
120 msg->operation_id = GNUNET_htonll (opc->id);
121 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (data->peer->host));
122 msg->peer_id = htonl (data->peer->unique_id);
123 msg->config_size = htons ((uint16_t) c_size);
124 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
125 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
130 * Callback which will be called when peer_create type operation is released
132 * @param cls the closure from GNUNET_TESTBED_operation_create_()
135 oprelease_peer_create (void *cls)
137 struct OperationContext *opc = cls;
141 case OPC_STATE_STARTED:
142 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
143 /* No break we continue flow */
145 GNUNET_free (((struct PeerCreateData *) opc->data)->peer);
146 GNUNET_free (opc->data);
148 case OPC_STATE_FINISHED:
156 * Function called when a peer destroy operation is ready
158 * @param cls the closure from GNUNET_TESTBED_operation_create_()
161 opstart_peer_destroy (void *cls)
163 struct OperationContext *opc = cls;
164 struct GNUNET_TESTBED_Peer *peer = opc->data;
165 struct GNUNET_TESTBED_PeerDestroyMessage *msg;
167 GNUNET_assert (OP_PEER_DESTROY == opc->type);
168 GNUNET_assert (NULL != peer);
169 opc->state = OPC_STATE_STARTED;
170 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
171 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
172 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_DESTROY_PEER);
173 msg->peer_id = htonl (peer->unique_id);
174 msg->operation_id = GNUNET_htonll (opc->id);
175 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
176 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
181 * Callback which will be called when peer_create type operation is released
183 * @param cls the closure from GNUNET_TESTBED_operation_create_()
186 oprelease_peer_destroy (void *cls)
188 struct OperationContext *opc = cls;
192 case OPC_STATE_STARTED:
193 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
194 /* no break; continue */
197 case OPC_STATE_FINISHED:
205 * Function called when a peer start operation is ready
207 * @param cls the closure from GNUNET_TESTBED_operation_create_()
210 opstart_peer_start (void *cls)
212 struct OperationContext *opc = cls;
213 struct GNUNET_TESTBED_PeerStartMessage *msg;
214 struct PeerEventData *data;
215 struct GNUNET_TESTBED_Peer *peer;
217 GNUNET_assert (OP_PEER_START == opc->type);
218 GNUNET_assert (NULL != (data = opc->data));
219 GNUNET_assert (NULL != (peer = data->peer));
220 GNUNET_assert ((PS_CREATED == peer->state) || (PS_STOPPED == peer->state));
221 opc->state = OPC_STATE_STARTED;
222 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
223 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
224 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_START_PEER);
225 msg->peer_id = htonl (peer->unique_id);
226 msg->operation_id = GNUNET_htonll (opc->id);
227 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
228 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
233 * Callback which will be called when peer start type operation is released
235 * @param cls the closure from GNUNET_TESTBED_operation_create_()
238 oprelease_peer_start (void *cls)
240 struct OperationContext *opc = cls;
244 case OPC_STATE_STARTED:
245 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
246 /* no break; continue */
248 GNUNET_free (opc->data);
250 case OPC_STATE_FINISHED:
258 * Function called when a peer stop operation is ready
260 * @param cls the closure from GNUNET_TESTBED_operation_create_()
263 opstart_peer_stop (void *cls)
265 struct OperationContext *opc = cls;
266 struct GNUNET_TESTBED_PeerStopMessage *msg;
267 struct PeerEventData *data;
268 struct GNUNET_TESTBED_Peer *peer;
270 GNUNET_assert (NULL != (data = opc->data));
271 GNUNET_assert (NULL != (peer = data->peer));
272 GNUNET_assert (PS_STARTED == peer->state);
273 opc->state = OPC_STATE_STARTED;
274 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
275 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_STOP_PEER);
276 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
277 msg->peer_id = htonl (peer->unique_id);
278 msg->operation_id = GNUNET_htonll (opc->id);
279 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
280 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
285 * Callback which will be called when peer stop type operation is released
287 * @param cls the closure from GNUNET_TESTBED_operation_create_()
290 oprelease_peer_stop (void *cls)
292 struct OperationContext *opc = cls;
296 case OPC_STATE_STARTED:
297 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
298 /* no break; continue */
300 GNUNET_free (opc->data);
302 case OPC_STATE_FINISHED:
310 * Generate PeerGetConfigurationMessage
312 * @param peer_id the id of the peer whose information we have to get
313 * @param operation_id the ip of the operation that should be represented in the
315 * @return the PeerGetConfigurationMessage
317 struct GNUNET_TESTBED_PeerGetConfigurationMessage *
318 GNUNET_TESTBED_generate_peergetconfig_msg_ (uint32_t peer_id,
319 uint64_t operation_id)
321 struct GNUNET_TESTBED_PeerGetConfigurationMessage *msg;
324 GNUNET_malloc (sizeof
325 (struct GNUNET_TESTBED_PeerGetConfigurationMessage));
327 htons (sizeof (struct GNUNET_TESTBED_PeerGetConfigurationMessage));
328 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_GET_PEER_INFORMATION);
329 msg->peer_id = htonl (peer_id);
330 msg->operation_id = GNUNET_htonll (operation_id);
336 * Function called when a peer get information operation is ready
338 * @param cls the closure from GNUNET_TESTBED_operation_create_()
341 opstart_peer_getinfo (void *cls)
343 struct OperationContext *opc = cls;
344 struct PeerInfoData *data = opc->data;
345 struct GNUNET_TESTBED_PeerGetConfigurationMessage *msg;
347 GNUNET_assert (NULL != data);
348 opc->state = OPC_STATE_STARTED;
350 GNUNET_TESTBED_generate_peergetconfig_msg_ (data->peer->unique_id,
352 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
353 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
358 * Callback which will be called when peer stop type operation is released
360 * @param cls the closure from GNUNET_TESTBED_operation_create_()
363 oprelease_peer_getinfo (void *cls)
365 struct OperationContext *opc = cls;
366 struct GNUNET_TESTBED_PeerInformation *data;
370 case OPC_STATE_STARTED:
371 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
372 /* no break; continue */
374 GNUNET_free (opc->data);
376 case OPC_STATE_FINISHED:
378 GNUNET_assert (NULL != data);
381 case GNUNET_TESTBED_PIT_CONFIGURATION:
382 if (NULL != data->result.cfg)
383 GNUNET_CONFIGURATION_destroy (data->result.cfg);
385 case GNUNET_TESTBED_PIT_IDENTITY:
386 GNUNET_free (data->result.id);
389 GNUNET_assert (0); /* We should never reach here */
399 * Function called when a overlay connect operation is ready
401 * @param cls the closure from GNUNET_TESTBED_operation_create_()
404 opstart_overlay_connect (void *cls)
406 struct OperationContext *opc = cls;
407 struct GNUNET_TESTBED_OverlayConnectMessage *msg;
408 struct OverlayConnectData *data;
410 opc->state = OPC_STATE_STARTED;
412 GNUNET_assert (NULL != data);
413 data->tslot_index = GNUNET_TESTBED_get_tslot_ (data->p1->host, data);
414 data->tstart = GNUNET_TIME_absolute_get ();
415 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_OverlayConnectMessage));
417 htons (sizeof (struct GNUNET_TESTBED_OverlayConnectMessage));
418 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_OVERLAY_CONNECT);
419 msg->peer1 = htonl (data->p1->unique_id);
420 msg->peer2 = htonl (data->p2->unique_id);
421 msg->operation_id = GNUNET_htonll (opc->id);
422 msg->peer2_host_id = htonl (GNUNET_TESTBED_host_get_id_ (data->p2->host));
423 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
424 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
429 * Callback which will be called when overlay connect operation is released
431 * @param cls the closure from GNUNET_TESTBED_operation_create_()
434 oprelease_overlay_connect (void *cls)
436 struct OperationContext *opc = cls;
437 struct GNUNET_TIME_Relative duration;
438 struct OverlayConnectData *data;
445 case OPC_STATE_STARTED:
446 (void) GNUNET_TESTBED_release_time_slot_ (data->p1->host, data->tslot_index,
448 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
450 case OPC_STATE_FINISHED:
451 duration = GNUNET_TIME_absolute_get_duration (data->tstart);
452 GNUNET_TESTBED_update_time_slot_ (data->p1->host, data->tslot_index, data,
453 duration, data->failed);
461 * Function called when a peer reconfigure operation is ready
463 * @param cls the closure from GNUNET_TESTBED_operation_create_()
466 opstart_peer_reconfigure (void *cls)
468 struct OperationContext *opc = cls;
469 struct PeerReconfigureData *data = opc->data;
470 struct GNUNET_TESTBED_PeerReconfigureMessage *msg;
475 opc->state = OPC_STATE_STARTED;
476 GNUNET_assert (NULL != data);
477 xc_size = GNUNET_TESTBED_compress_config_ (data->config, data->cfg_size,
479 GNUNET_free (data->config);
481 GNUNET_assert (xc_size <= UINT16_MAX);
482 msize = (uint16_t) xc_size +
483 sizeof (struct GNUNET_TESTBED_PeerReconfigureMessage);
484 msg = GNUNET_realloc (xconfig, msize);
485 (void) memmove (&msg[1], msg, xc_size);
486 msg->header.size = htons (msize);
487 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_RECONFIGURE_PEER);
488 msg->peer_id = htonl (data->peer->unique_id);
489 msg->operation_id = GNUNET_htonll (opc->id);
490 msg->config_size = htons (data->cfg_size);
493 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
494 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
499 * Callback which will be called when a peer reconfigure operation is released
501 * @param cls the closure from GNUNET_TESTBED_operation_create_()
504 oprelease_peer_reconfigure (void *cls)
506 struct OperationContext *opc = cls;
507 struct PeerReconfigureData *data = opc->data;
512 GNUNET_free (data->config);
515 case OPC_STATE_STARTED:
516 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
518 case OPC_STATE_FINISHED:
526 * Lookup a peer by ID.
528 * @param id global peer ID assigned to the peer
529 * @return handle to the host, NULL on error
531 struct GNUNET_TESTBED_Peer *
532 GNUNET_TESTBED_peer_lookup_by_id_ (uint32_t id)
540 * Create the given peer at the specified host using the given
541 * controller. If the given controller is not running on the target
542 * host, it should find or create a controller at the target host and
543 * delegate creating the peer. Explicit delegation paths can be setup
544 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
545 * path exists, a direct link with a subordinate controller is setup
546 * for the first delegated peer to a particular host; the subordinate
547 * controller is then destroyed once the last peer that was delegated
548 * to the remote host is stopped.
550 * Creating the peer only creates the handle to manipulate and further
551 * configure the peer; use "GNUNET_TESTBED_peer_start" and
552 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
555 * Note that the given configuration will be adjusted by the
556 * controller to avoid port/path conflicts with other peers.
557 * The "final" configuration can be obtained using
558 * 'GNUNET_TESTBED_peer_get_information'.
560 * @param controller controller process to use
561 * @param host host to run the peer on; cannot be NULL
562 * @param cfg Template configuration to use for the peer. Should exist until
563 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
564 * @param cb the callback to call when the peer has been created
565 * @param cls the closure to the above callback
566 * @return the operation handle
568 struct GNUNET_TESTBED_Operation *
569 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
570 struct GNUNET_TESTBED_Host *host,
571 const struct GNUNET_CONFIGURATION_Handle *cfg,
572 GNUNET_TESTBED_PeerCreateCallback cb, void *cls)
575 struct GNUNET_TESTBED_Peer *peer;
576 struct PeerCreateData *data;
577 struct OperationContext *opc;
578 static uint32_t id_gen;
580 peer = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Peer));
581 peer->controller = controller;
583 peer->unique_id = id_gen++;
584 peer->state = PS_INVALID;
585 data = GNUNET_malloc (sizeof (struct PeerCreateData));
591 opc = GNUNET_malloc (sizeof (struct OperationContext));
594 opc->id = GNUNET_TESTBED_get_next_op_id (controller);
595 opc->type = OP_PEER_CREATE;
597 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_create,
598 &oprelease_peer_create);
599 GNUNET_TESTBED_operation_queue_insert_ (controller->opq_parallel_operations,
601 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
607 * Start the given peer.
609 * @param op_cls the closure for this operation; will be set in
610 * event->details.operation_finished.op_cls when this operation fails.
611 * @param peer peer to start
612 * @param pcc function to call upon completion
613 * @param pcc_cls closure for 'pcc'
614 * @return handle to the operation
616 struct GNUNET_TESTBED_Operation *
617 GNUNET_TESTBED_peer_start (void *op_cls, struct GNUNET_TESTBED_Peer *peer,
618 GNUNET_TESTBED_PeerChurnCallback pcc, void *pcc_cls)
620 struct OperationContext *opc;
621 struct PeerEventData *data;
623 data = GNUNET_malloc (sizeof (struct PeerEventData));
626 data->pcc_cls = pcc_cls;
627 opc = GNUNET_malloc (sizeof (struct OperationContext));
628 opc->c = peer->controller;
630 opc->op_cls = op_cls;
631 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
632 opc->type = OP_PEER_START;
634 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_start,
635 &oprelease_peer_start);
636 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
638 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
644 * Stop the given peer. The handle remains valid (use
645 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
646 * state of the peer).
648 * @param op_cls the closure for this operation; will be set in the event
650 * @param peer peer to stop
651 * @param pcc function to call upon completion
652 * @param pcc_cls closure for 'pcc'
653 * @return handle to the operation
655 struct GNUNET_TESTBED_Operation *
656 GNUNET_TESTBED_peer_stop (void *op_cls,
657 struct GNUNET_TESTBED_Peer *peer,
658 GNUNET_TESTBED_PeerChurnCallback pcc, void *pcc_cls)
660 struct OperationContext *opc;
661 struct PeerEventData *data;
663 data = GNUNET_malloc (sizeof (struct PeerEventData));
666 data->pcc_cls = pcc_cls;
667 opc = GNUNET_malloc (sizeof (struct OperationContext));
668 opc->c = peer->controller;
670 opc->op_cls = op_cls;
671 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
672 opc->type = OP_PEER_STOP;
674 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_stop,
675 &oprelease_peer_stop);
676 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
678 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
684 * Request information about a peer. The controller callback will not be called
685 * with event type GNUNET_TESTBED_ET_OPERATION_FINISHED when result for this
686 * operation is available. Instead, the GNUNET_TESTBED_PeerInfoCallback() will
688 * The peer information in the callback is valid until the operation is canceled.
690 * @param peer peer to request information about
691 * @param pit desired information
692 * @param cb the convenience callback to be called when results for this
693 * operation are available
694 * @param cb_cls the closure for the above callback
695 * @return handle to the operation
697 struct GNUNET_TESTBED_Operation *
698 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
699 enum GNUNET_TESTBED_PeerInformationType
700 pit, GNUNET_TESTBED_PeerInfoCallback cb,
703 struct OperationContext *opc;
704 struct PeerInfoData *data;
706 GNUNET_assert (GNUNET_TESTBED_PIT_GENERIC != pit);
707 GNUNET_assert (NULL != cb);
708 data = GNUNET_malloc (sizeof (struct PeerInfoData));
712 data->cb_cls = cb_cls;
713 opc = GNUNET_malloc (sizeof (struct OperationContext));
714 opc->c = peer->controller;
716 opc->type = OP_PEER_INFO;
717 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
719 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_getinfo,
720 &oprelease_peer_getinfo);
721 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
723 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
729 * Change peer configuration. Must only be called while the
730 * peer is stopped. Ports and paths cannot be changed this
733 * @param peer peer to change configuration for
734 * @param cfg new configuration (differences to existing
735 * configuration only)
736 * @return handle to the operation
738 struct GNUNET_TESTBED_Operation *
739 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
741 GNUNET_CONFIGURATION_Handle *cfg)
743 struct OperationContext *opc;
744 struct PeerReconfigureData *data;
747 data = GNUNET_malloc (sizeof (struct PeerReconfigureData));
749 data->config = GNUNET_CONFIGURATION_serialize (cfg, &csize);
750 if (NULL == data->config)
755 if (csize > UINT16_MAX)
758 GNUNET_free (data->config);
762 data->cfg_size = (uint16_t) csize;
763 opc = GNUNET_malloc (sizeof (struct OperationContext));
764 opc->c = peer->controller;
766 opc->type = OP_PEER_RECONFIGURE;
767 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
769 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_reconfigure,
770 &oprelease_peer_reconfigure);
771 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
773 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
779 * Destroy the given peer; the peer should have been
780 * stopped first (if it was started).
782 * @param peer peer to stop
783 * @return handle to the operation
785 struct GNUNET_TESTBED_Operation *
786 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer)
788 struct OperationContext *opc;
790 opc = GNUNET_malloc (sizeof (struct OperationContext));
792 opc->c = peer->controller;
793 opc->id = GNUNET_TESTBED_get_next_op_id (peer->controller);
794 opc->type = OP_PEER_DESTROY;
796 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_destroy,
797 &oprelease_peer_destroy);
798 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
800 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
806 * Manipulate the P2P underlay topology by configuring a link
809 * @param op_cls closure argument to give with the operation event
810 * @param p1 first peer
811 * @param p2 second peer
812 * @param co option to change
813 * @param ... option-specific values
814 * @return handle to the operation, NULL if configuring the link at this
815 * time is not allowed
817 struct GNUNET_TESTBED_Operation *
818 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
819 struct GNUNET_TESTBED_Peer *p1,
820 struct GNUNET_TESTBED_Peer *p2,
821 enum GNUNET_TESTBED_ConnectOption co,
830 * Both peers must have been started before calling this function.
831 * This function then obtains a HELLO from 'p1', gives it to 'p2'
832 * and asks 'p2' to connect to 'p1'.
834 * @param op_cls closure argument to give with the operation event
835 * @param cb the callback to call when this operation has finished
836 * @param cb_cls the closure for the above callback
837 * @param p1 first peer
838 * @param p2 second peer
839 * @return handle to the operation, NULL if connecting these two
840 * peers is fundamentally not possible at this time (peers
841 * not running or underlay disallows)
843 struct GNUNET_TESTBED_Operation *
844 GNUNET_TESTBED_overlay_connect (void *op_cls,
845 GNUNET_TESTBED_OperationCompletionCallback cb,
846 void *cb_cls, struct GNUNET_TESTBED_Peer *p1,
847 struct GNUNET_TESTBED_Peer *p2)
849 struct OperationContext *opc;
850 struct OverlayConnectData *data;
852 GNUNET_assert ((PS_STARTED == p1->state) && (PS_STARTED == p2->state));
853 data = GNUNET_malloc (sizeof (struct OverlayConnectData));
857 data->cb_cls = cb_cls;
858 opc = GNUNET_malloc (sizeof (struct OperationContext));
860 opc->c = p1->controller;
861 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
862 opc->type = OP_OVERLAY_CONNECT;
863 opc->op_cls = op_cls;
865 GNUNET_TESTBED_operation_create_ (opc, &opstart_overlay_connect,
866 &oprelease_overlay_connect);
867 GNUNET_TESTBED_host_queue_oc_ (p1->host, opc->op);
868 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
874 * Function called when a peer manage service operation is ready
876 * @param cls the closure from GNUNET_TESTBED_operation_create_()
879 opstart_manage_service (void *cls)
881 struct OperationContext *opc = cls;
882 struct ManageServiceData *data = opc->data;
883 struct GNUNET_TESTBED_ManagePeerServiceMessage *msg;
885 GNUNET_assert (NULL != data);
886 msg = GNUNET_malloc (data->msize);
887 msg->header.size = htons (data->msize);
888 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_MANAGE_PEER_SERVICE);
889 msg->peer_id = htonl (data->peer->unique_id);
890 msg->operation_id = GNUNET_htonll (opc->id);
891 msg->start = (uint8_t) data->start;
892 (void) memcpy (&msg[1], data->service_name, data->msize
893 - sizeof (struct GNUNET_TESTBED_ManagePeerServiceMessage));
894 GNUNET_free (data->service_name);
895 data->service_name = NULL;
896 opc->state = OPC_STATE_STARTED;
897 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
898 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
903 * Callback which will be called when peer manage server operation is released
905 * @param cls the closure from GNUNET_TESTBED_operation_create_()
908 oprelease_manage_service (void *cls)
910 struct OperationContext *opc = cls;
911 struct ManageServiceData *data;
916 case OPC_STATE_STARTED:
917 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
920 GNUNET_assert (NULL != data);
921 GNUNET_free (data->service_name);
923 case OPC_STATE_FINISHED:
926 GNUNET_free_non_null (data);
932 * Start or stop given service at a peer. This should not be called to
933 * start/stop the peer's ARM service. Use GNUNET_TESTBED_peer_start(),
934 * GNUNET_TESTBED_peer_stop() for starting/stopping peer's ARM service. Success
935 * or failure of the generated operation is signalled through the controller
936 * event callback and/or operation completion callback.
938 * @param op_cls the closure for the operation
939 * @param peer the peer whose service is to be started/stopped
940 * @param service_name the name of the service
941 * @param cb the operation completion callback
942 * @param cb_cls the closure for the operation completion callback
943 * @param start 1 to start the service; 0 to stop the service
944 * @return an operation handle; NULL upon error (peer not running)
946 struct GNUNET_TESTBED_Operation *
947 GNUNET_TESTBED_peer_manage_service (void *op_cls,
948 struct GNUNET_TESTBED_Peer *peer,
949 const char *service_name,
950 GNUNET_TESTBED_OperationCompletionCallback cb,
954 struct ManageServiceData *data;
955 struct OperationContext *opc;
958 GNUNET_assert (PS_STARTED == peer->state); /* peer is not running? */
959 msize = strlen (service_name) + 1;
960 msize += sizeof (struct GNUNET_TESTBED_ManagePeerServiceMessage);
961 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < msize)
963 data = GNUNET_malloc (sizeof (struct ManageServiceData));
965 data->cb_cls = cb_cls;
967 data->service_name = GNUNET_strdup (service_name);
969 data->msize = (uint16_t) msize;
970 opc = GNUNET_malloc (sizeof (struct OperationContext));
972 opc->c = peer->controller;
973 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
974 opc->type = OP_MANAGE_SERVICE;
975 opc->op_cls = op_cls;
977 GNUNET_TESTBED_operation_create_ (opc, &opstart_manage_service,
978 &oprelease_manage_service);
979 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
981 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
987 /* end of testbed_api_peers.c */