2 This file is part of GNUnet
3 (C) 2008--2013 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
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11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
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16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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_new (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 ((TESTBED_PS_CREATED == peer->state) || (TESTBED_PS_STOPPED == peer->state));
221 opc->state = OPC_STATE_STARTED;
222 msg = GNUNET_new (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 (TESTBED_PS_STARTED == peer->state);
273 opc->state = OPC_STATE_STARTED;
274 msg = GNUNET_new (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 msg = GNUNET_new (struct GNUNET_TESTBED_OverlayConnectMessage);
415 htons (sizeof (struct GNUNET_TESTBED_OverlayConnectMessage));
416 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_OVERLAY_CONNECT);
417 msg->peer1 = htonl (data->p1->unique_id);
418 msg->peer2 = htonl (data->p2->unique_id);
419 msg->operation_id = GNUNET_htonll (opc->id);
420 msg->peer2_host_id = htonl (GNUNET_TESTBED_host_get_id_ (data->p2->host));
421 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
422 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
427 * Callback which will be called when overlay connect operation is released
429 * @param cls the closure from GNUNET_TESTBED_operation_create_()
432 oprelease_overlay_connect (void *cls)
434 struct OperationContext *opc = cls;
435 struct OverlayConnectData *data;
442 case OPC_STATE_STARTED:
443 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
445 case OPC_STATE_FINISHED:
454 * Function called when a peer reconfigure operation is ready
456 * @param cls the closure from GNUNET_TESTBED_operation_create_()
459 opstart_peer_reconfigure (void *cls)
461 struct OperationContext *opc = cls;
462 struct PeerReconfigureData *data = opc->data;
463 struct GNUNET_TESTBED_PeerReconfigureMessage *msg;
468 opc->state = OPC_STATE_STARTED;
469 GNUNET_assert (NULL != data);
470 xc_size = GNUNET_TESTBED_compress_config_ (data->config, data->cfg_size,
472 GNUNET_free (data->config);
474 GNUNET_assert (xc_size <= UINT16_MAX);
475 msize = (uint16_t) xc_size +
476 sizeof (struct GNUNET_TESTBED_PeerReconfigureMessage);
477 msg = GNUNET_realloc (xconfig, msize);
478 (void) memmove (&msg[1], msg, xc_size);
479 msg->header.size = htons (msize);
480 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_RECONFIGURE_PEER);
481 msg->peer_id = htonl (data->peer->unique_id);
482 msg->operation_id = GNUNET_htonll (opc->id);
483 msg->config_size = htons (data->cfg_size);
486 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
487 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
492 * Callback which will be called when a peer reconfigure operation is released
494 * @param cls the closure from GNUNET_TESTBED_operation_create_()
497 oprelease_peer_reconfigure (void *cls)
499 struct OperationContext *opc = cls;
500 struct PeerReconfigureData *data = opc->data;
505 GNUNET_free (data->config);
508 case OPC_STATE_STARTED:
509 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
511 case OPC_STATE_FINISHED:
519 * Lookup a peer by ID.
521 * @param id global peer ID assigned to the peer
522 * @return handle to the host, NULL on error
524 struct GNUNET_TESTBED_Peer *
525 GNUNET_TESTBED_peer_lookup_by_id_ (uint32_t id)
533 * Create the given peer at the specified host using the given
534 * controller. If the given controller is not running on the target
535 * host, it should find or create a controller at the target host and
536 * delegate creating the peer. Explicit delegation paths can be setup
537 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
538 * path exists, a direct link with a subordinate controller is setup
539 * for the first delegated peer to a particular host; the subordinate
540 * controller is then destroyed once the last peer that was delegated
541 * to the remote host is stopped.
543 * Creating the peer only creates the handle to manipulate and further
544 * configure the peer; use "GNUNET_TESTBED_peer_start" and
545 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
548 * Note that the given configuration will be adjusted by the
549 * controller to avoid port/path conflicts with other peers.
550 * The "final" configuration can be obtained using
551 * 'GNUNET_TESTBED_peer_get_information'.
553 * @param controller controller process to use
554 * @param host host to run the peer on; cannot be NULL
555 * @param cfg Template configuration to use for the peer. Should exist until
556 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
557 * @param cb the callback to call when the peer has been created
558 * @param cls the closure to the above callback
559 * @return the operation handle
561 struct GNUNET_TESTBED_Operation *
562 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
563 struct GNUNET_TESTBED_Host *host,
564 const struct GNUNET_CONFIGURATION_Handle *cfg,
565 GNUNET_TESTBED_PeerCreateCallback cb, void *cls)
568 struct GNUNET_TESTBED_Peer *peer;
569 struct PeerCreateData *data;
570 struct OperationContext *opc;
571 static uint32_t id_gen;
573 peer = GNUNET_new (struct GNUNET_TESTBED_Peer);
574 peer->controller = controller;
576 peer->unique_id = id_gen++;
577 peer->state = TESTBED_PS_INVALID;
578 data = GNUNET_new (struct PeerCreateData);
584 opc = GNUNET_new (struct OperationContext);
587 opc->id = GNUNET_TESTBED_get_next_op_id (controller);
588 opc->type = OP_PEER_CREATE;
590 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_create,
591 &oprelease_peer_create);
592 GNUNET_TESTBED_operation_queue_insert_ (controller->opq_parallel_operations,
594 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
600 * Start the given peer.
602 * @param op_cls the closure for this operation; will be set in
603 * event->details.operation_finished.op_cls when this operation fails.
604 * @param peer peer to start
605 * @param pcc function to call upon completion
606 * @param pcc_cls closure for 'pcc'
607 * @return handle to the operation
609 struct GNUNET_TESTBED_Operation *
610 GNUNET_TESTBED_peer_start (void *op_cls, struct GNUNET_TESTBED_Peer *peer,
611 GNUNET_TESTBED_PeerChurnCallback pcc, void *pcc_cls)
613 struct OperationContext *opc;
614 struct PeerEventData *data;
616 data = GNUNET_new (struct PeerEventData);
619 data->pcc_cls = pcc_cls;
620 opc = GNUNET_new (struct OperationContext);
621 opc->c = peer->controller;
623 opc->op_cls = op_cls;
624 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
625 opc->type = OP_PEER_START;
627 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_start,
628 &oprelease_peer_start);
629 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
631 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
637 * Stop the given peer. The handle remains valid (use
638 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
639 * state of the peer).
641 * @param op_cls the closure for this operation; will be set in the event
643 * @param peer peer to stop
644 * @param pcc function to call upon completion
645 * @param pcc_cls closure for 'pcc'
646 * @return handle to the operation
648 struct GNUNET_TESTBED_Operation *
649 GNUNET_TESTBED_peer_stop (void *op_cls,
650 struct GNUNET_TESTBED_Peer *peer,
651 GNUNET_TESTBED_PeerChurnCallback pcc, void *pcc_cls)
653 struct OperationContext *opc;
654 struct PeerEventData *data;
656 data = GNUNET_new (struct PeerEventData);
659 data->pcc_cls = pcc_cls;
660 opc = GNUNET_new (struct OperationContext);
661 opc->c = peer->controller;
663 opc->op_cls = op_cls;
664 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
665 opc->type = OP_PEER_STOP;
667 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_stop,
668 &oprelease_peer_stop);
669 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
671 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
677 * Request information about a peer. The controller callback will not be called
678 * with event type GNUNET_TESTBED_ET_OPERATION_FINISHED when result for this
679 * operation is available. Instead, the GNUNET_TESTBED_PeerInfoCallback() will
681 * The peer information in the callback is valid until the operation is canceled.
683 * @param peer peer to request information about
684 * @param pit desired information
685 * @param cb the convenience callback to be called when results for this
686 * operation are available
687 * @param cb_cls the closure for the above callback
688 * @return handle to the operation
690 struct GNUNET_TESTBED_Operation *
691 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
692 enum GNUNET_TESTBED_PeerInformationType
693 pit, GNUNET_TESTBED_PeerInfoCallback cb,
696 struct OperationContext *opc;
697 struct PeerInfoData *data;
699 GNUNET_assert (GNUNET_TESTBED_PIT_GENERIC != pit);
700 GNUNET_assert (NULL != cb);
701 data = GNUNET_new (struct PeerInfoData);
705 data->cb_cls = cb_cls;
706 opc = GNUNET_new (struct OperationContext);
707 opc->c = peer->controller;
709 opc->type = OP_PEER_INFO;
710 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
712 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_getinfo,
713 &oprelease_peer_getinfo);
714 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
716 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
722 * Change peer configuration. Must only be called while the
723 * peer is stopped. Ports and paths cannot be changed this
726 * @param peer peer to change configuration for
727 * @param cfg new configuration (differences to existing
728 * configuration only)
729 * @return handle to the operation
731 struct GNUNET_TESTBED_Operation *
732 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
734 GNUNET_CONFIGURATION_Handle *cfg)
736 struct OperationContext *opc;
737 struct PeerReconfigureData *data;
740 data = GNUNET_new (struct PeerReconfigureData);
742 data->config = GNUNET_CONFIGURATION_serialize (cfg, &csize);
743 if (NULL == data->config)
748 if (csize > UINT16_MAX)
751 GNUNET_free (data->config);
755 data->cfg_size = (uint16_t) csize;
756 opc = GNUNET_new (struct OperationContext);
757 opc->c = peer->controller;
759 opc->type = OP_PEER_RECONFIGURE;
760 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
762 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_reconfigure,
763 &oprelease_peer_reconfigure);
764 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
766 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
772 * Destroy the given peer; the peer should have been
773 * stopped first (if it was started).
775 * @param peer peer to stop
776 * @return handle to the operation
778 struct GNUNET_TESTBED_Operation *
779 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer)
781 struct OperationContext *opc;
783 opc = GNUNET_new (struct OperationContext);
785 opc->c = peer->controller;
786 opc->id = GNUNET_TESTBED_get_next_op_id (peer->controller);
787 opc->type = OP_PEER_DESTROY;
789 GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_destroy,
790 &oprelease_peer_destroy);
791 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
793 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
799 * Manipulate the P2P underlay topology by configuring a link
802 * @param op_cls closure argument to give with the operation event
803 * @param p1 first peer
804 * @param p2 second peer
805 * @param co option to change
806 * @param ... option-specific values
807 * @return handle to the operation, NULL if configuring the link at this
808 * time is not allowed
810 struct GNUNET_TESTBED_Operation *
811 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
812 struct GNUNET_TESTBED_Peer *p1,
813 struct GNUNET_TESTBED_Peer *p2,
814 enum GNUNET_TESTBED_ConnectOption co,
823 * Both peers must have been started before calling this function.
824 * This function then obtains a HELLO from 'p1', gives it to 'p2'
825 * and asks 'p2' to connect to 'p1'.
827 * @param op_cls closure argument to give with the operation event
828 * @param cb the callback to call when this operation has finished
829 * @param cb_cls the closure for the above callback
830 * @param p1 first peer
831 * @param p2 second peer
832 * @return handle to the operation, NULL if connecting these two
833 * peers is fundamentally not possible at this time (peers
834 * not running or underlay disallows)
836 struct GNUNET_TESTBED_Operation *
837 GNUNET_TESTBED_overlay_connect (void *op_cls,
838 GNUNET_TESTBED_OperationCompletionCallback cb,
839 void *cb_cls, struct GNUNET_TESTBED_Peer *p1,
840 struct GNUNET_TESTBED_Peer *p2)
842 struct OperationContext *opc;
843 struct OverlayConnectData *data;
845 GNUNET_assert ((TESTBED_PS_STARTED == p1->state) && (TESTBED_PS_STARTED == p2->state));
846 data = GNUNET_new (struct OverlayConnectData);
850 data->cb_cls = cb_cls;
851 opc = GNUNET_new (struct OperationContext);
853 opc->c = p1->controller;
854 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
855 opc->type = OP_OVERLAY_CONNECT;
856 opc->op_cls = op_cls;
858 GNUNET_TESTBED_operation_create_ (opc, &opstart_overlay_connect,
859 &oprelease_overlay_connect);
860 GNUNET_TESTBED_host_queue_oc_ (p1->host, opc->op);
861 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
867 * Function called when a peer manage service operation is ready
869 * @param cls the closure from GNUNET_TESTBED_operation_create_()
872 opstart_manage_service (void *cls)
874 struct OperationContext *opc = cls;
875 struct ManageServiceData *data = opc->data;
876 struct GNUNET_TESTBED_ManagePeerServiceMessage *msg;
878 GNUNET_assert (NULL != data);
879 msg = GNUNET_malloc (data->msize);
880 msg->header.size = htons (data->msize);
881 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_MANAGE_PEER_SERVICE);
882 msg->peer_id = htonl (data->peer->unique_id);
883 msg->operation_id = GNUNET_htonll (opc->id);
884 msg->start = (uint8_t) data->start;
885 (void) memcpy (&msg[1], data->service_name, data->msize
886 - sizeof (struct GNUNET_TESTBED_ManagePeerServiceMessage));
887 GNUNET_free (data->service_name);
888 data->service_name = NULL;
889 opc->state = OPC_STATE_STARTED;
890 GNUNET_TESTBED_insert_opc_ (opc->c, opc);
891 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
896 * Callback which will be called when peer manage server operation is released
898 * @param cls the closure from GNUNET_TESTBED_operation_create_()
901 oprelease_manage_service (void *cls)
903 struct OperationContext *opc = cls;
904 struct ManageServiceData *data;
909 case OPC_STATE_STARTED:
910 GNUNET_TESTBED_remove_opc_ (opc->c, opc);
913 GNUNET_assert (NULL != data);
914 GNUNET_free (data->service_name);
916 case OPC_STATE_FINISHED:
919 GNUNET_free_non_null (data);
925 * Start or stop given service at a peer. This should not be called to
926 * start/stop the peer's ARM service. Use GNUNET_TESTBED_peer_start(),
927 * GNUNET_TESTBED_peer_stop() for starting/stopping peer's ARM service. Success
928 * or failure of the generated operation is signalled through the controller
929 * event callback and/or operation completion callback.
931 * @param op_cls the closure for the operation
932 * @param peer the peer whose service is to be started/stopped
933 * @param service_name the name of the service
934 * @param cb the operation completion callback
935 * @param cb_cls the closure for the operation completion callback
936 * @param start 1 to start the service; 0 to stop the service
937 * @return an operation handle; NULL upon error (peer not running)
939 struct GNUNET_TESTBED_Operation *
940 GNUNET_TESTBED_peer_manage_service (void *op_cls,
941 struct GNUNET_TESTBED_Peer *peer,
942 const char *service_name,
943 GNUNET_TESTBED_OperationCompletionCallback cb,
947 struct ManageServiceData *data;
948 struct OperationContext *opc;
951 GNUNET_assert (TESTBED_PS_STARTED == peer->state); /* peer is not running? */
952 msize = strlen (service_name) + 1;
953 msize += sizeof (struct GNUNET_TESTBED_ManagePeerServiceMessage);
954 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < msize)
956 data = GNUNET_new (struct ManageServiceData);
958 data->cb_cls = cb_cls;
960 data->service_name = GNUNET_strdup (service_name);
962 data->msize = (uint16_t) msize;
963 opc = GNUNET_new (struct OperationContext);
965 opc->c = peer->controller;
966 opc->id = GNUNET_TESTBED_get_next_op_id (opc->c);
967 opc->type = OP_MANAGE_SERVICE;
968 opc->op_cls = op_cls;
970 GNUNET_TESTBED_operation_create_ (opc, &opstart_manage_service,
971 &oprelease_manage_service);
972 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
974 GNUNET_TESTBED_operation_begin_wait_ (opc->op);
980 /* end of testbed_api_peers.c */