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3 (C) 2008--2012 Christian Grothoff (and other contributing authors)
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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"
37 * Function to call to start a peer_create type operation once all
38 * queues the operation is part of declare that the
39 * operation can be activated.
41 * @param cls the closure from GNUNET_TESTBED_operation_create_()
44 opstart_peer_create (void *cls)
46 struct OperationContext *opc = cls;
47 struct PeerCreateData *data;
48 struct GNUNET_TESTBED_PeerCreateMessage *msg;
55 GNUNET_assert (OP_PEER_CREATE == opc->type);
57 GNUNET_assert (NULL != data);
58 GNUNET_assert (NULL != data->peer);
59 opc->state = OPC_STATE_STARTED;
60 config = GNUNET_CONFIGURATION_serialize (data->cfg, &c_size);
61 xc_size = GNUNET_TESTBED_compress_config_ (config, c_size, &xconfig);
63 msize = xc_size + sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
64 msg = GNUNET_realloc (xconfig, msize);
65 memmove (&msg[1], msg, xc_size);
66 msg->header.size = htons (msize);
67 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER);
68 msg->operation_id = GNUNET_htonll (opc->id);
69 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (data->peer->host));
70 msg->peer_id = htonl (data->peer->unique_id);
71 msg->config_size = htonl (c_size);
72 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
73 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
78 * Callback which will be called when peer_create type operation is released
80 * @param cls the closure from GNUNET_TESTBED_operation_create_()
83 oprelease_peer_create (void *cls)
85 struct OperationContext *opc = cls;
87 if (OPC_STATE_FINISHED != opc->state)
89 GNUNET_free (((struct PeerCreateData *) opc->data)->peer);
90 GNUNET_free (opc->data);
91 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
98 * Function called when a peer destroy operation is ready
100 * @param cls the closure from GNUNET_TESTBED_operation_create_()
103 opstart_peer_destroy (void *cls)
105 struct OperationContext *opc = cls;
106 struct GNUNET_TESTBED_Peer *peer;
107 struct GNUNET_TESTBED_PeerDestroyMessage *msg;
109 GNUNET_assert (OP_PEER_DESTROY == opc->type);
111 GNUNET_assert (NULL != peer);
112 opc->state = OPC_STATE_STARTED;
113 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
114 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerDestroyMessage));
115 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER);
116 msg->peer_id = htonl (peer->unique_id);
117 msg->operation_id = GNUNET_htonll (opc->id);
118 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head,
119 opc->c->ocq_tail, opc);
120 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
125 * Callback which will be called when peer_create type operation is released
127 * @param cls the closure from GNUNET_TESTBED_operation_create_()
130 oprelease_peer_destroy (void *cls)
132 struct OperationContext *opc = cls;
134 if (OPC_STATE_FINISHED != opc->state)
135 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
141 * Function called when a peer start operation is ready
143 * @param cls the closure from GNUNET_TESTBED_operation_create_()
146 opstart_peer_start (void *cls)
148 struct OperationContext *opc = cls;
149 struct GNUNET_TESTBED_PeerStartMessage *msg;
150 struct GNUNET_TESTBED_Peer *peer;
152 GNUNET_assert (OP_PEER_START == opc->type);
153 GNUNET_assert (NULL != opc->data);
155 GNUNET_assert ((PS_CREATED == peer->state) || (PS_STOPPED == peer->state));
156 opc->state = OPC_STATE_STARTED;
157 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
158 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStartMessage));
159 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_STARTPEER);
160 msg->peer_id = htonl (peer->unique_id);
161 msg->operation_id = GNUNET_htonll (opc->id);
162 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
163 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
168 * Callback which will be called when peer start type operation is released
170 * @param cls the closure from GNUNET_TESTBED_operation_create_()
173 oprelease_peer_start (void *cls)
175 struct OperationContext *opc = cls;
177 if (OPC_STATE_FINISHED != opc->state)
178 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
184 * Function called when a peer stop operation is ready
186 * @param cls the closure from GNUNET_TESTBED_operation_create_()
189 opstart_peer_stop (void *cls)
191 struct OperationContext *opc = cls;
192 struct GNUNET_TESTBED_PeerStopMessage *msg;
193 struct GNUNET_TESTBED_Peer *peer;
195 GNUNET_assert (NULL != opc->data);
197 GNUNET_assert (PS_STARTED == peer->state);
198 opc->state = OPC_STATE_STARTED;
199 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
200 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_STOPPEER);
201 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerStopMessage));
202 msg->peer_id = htonl (peer->unique_id);
203 msg->operation_id = GNUNET_htonll (opc->id);
204 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
205 GNUNET_TESTBED_queue_message_ (peer->controller, &msg->header);
210 * Callback which will be called when peer stop type operation is released
212 * @param cls the closure from GNUNET_TESTBED_operation_create_()
215 oprelease_peer_stop (void *cls)
217 struct OperationContext *opc = cls;
219 if (OPC_STATE_FINISHED != opc->state)
220 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
226 * Generate PeerGetConfigurationMessage
228 * @param peer_id the id of the peer whose information we have to get
229 * @param operation_id the ip of the operation that should be represented in
231 * @return the PeerGetConfigurationMessage
233 struct GNUNET_TESTBED_PeerGetConfigurationMessage *
234 GNUNET_TESTBED_generate_peergetconfig_msg_ (uint32_t peer_id,
235 uint64_t operation_id)
237 struct GNUNET_TESTBED_PeerGetConfigurationMessage *msg;
239 msg = GNUNET_malloc (sizeof (struct
240 GNUNET_TESTBED_PeerGetConfigurationMessage));
241 msg->header.size = htons
242 (sizeof (struct GNUNET_TESTBED_PeerGetConfigurationMessage));
243 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_GETPEERCONFIG);
244 msg->peer_id = htonl (peer_id);
245 msg->operation_id = GNUNET_htonll (operation_id);
251 * Function called when a peer get information operation is ready
253 * @param cls the closure from GNUNET_TESTBED_operation_create_()
256 opstart_peer_getinfo (void *cls)
258 struct OperationContext *opc = cls;
259 struct PeerInfoData *data;
260 struct GNUNET_TESTBED_PeerGetConfigurationMessage *msg;
263 GNUNET_assert (NULL != data);
264 opc->state = OPC_STATE_STARTED;
265 msg = GNUNET_TESTBED_generate_peergetconfig_msg_ (data->peer->unique_id,
267 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
268 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
273 * Callback which will be called when peer stop type operation is released
275 * @param cls the closure from GNUNET_TESTBED_operation_create_()
278 oprelease_peer_getinfo (void *cls)
280 struct OperationContext *opc = cls;
281 struct PeerInfoData2 *data;
283 if (OPC_STATE_FINISHED != opc->state)
285 GNUNET_free_non_null (opc->data);
286 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
291 GNUNET_assert (NULL != data);
294 case GNUNET_TESTBED_PIT_CONFIGURATION:
295 GNUNET_CONFIGURATION_destroy (data->details.cfg);
297 case GNUNET_TESTBED_PIT_IDENTITY:
298 GNUNET_free (data->details.peer_identity);
301 GNUNET_assert (0); /* We should never reach here */
310 * Function called when a overlay connect operation is ready
312 * @param cls the closure from GNUNET_TESTBED_operation_create_()
315 opstart_overlay_connect (void *cls)
317 struct OperationContext *opc = cls;
318 struct GNUNET_TESTBED_OverlayConnectMessage *msg;
319 struct OverlayConnectData *data;
321 opc->state = OPC_STATE_STARTED;
323 GNUNET_assert (NULL != data);
324 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_OverlayConnectMessage));
325 msg->header.size = htons (sizeof
326 (struct GNUNET_TESTBED_OverlayConnectMessage));
327 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_OLCONNECT);
328 msg->peer1 = htonl (data->p1->unique_id);
329 msg->peer2 = htonl (data->p2->unique_id);
330 msg->operation_id = GNUNET_htonll (opc->id);
331 GNUNET_CONTAINER_DLL_insert_tail (opc->c->ocq_head, opc->c->ocq_tail, opc);
332 GNUNET_TESTBED_queue_message_ (opc->c, &msg->header);
337 * Callback which will be called when overlay connect operation is released
339 * @param cls the closure from GNUNET_TESTBED_operation_create_()
342 oprelease_overlay_connect (void *cls)
344 struct OperationContext *opc = cls;
346 if (OPC_STATE_FINISHED != opc->state)
348 GNUNET_free (opc->data);
349 GNUNET_CONTAINER_DLL_remove (opc->c->ocq_head, opc->c->ocq_tail, opc);
356 * Lookup a peer by ID.
358 * @param id global peer ID assigned to the peer
359 * @return handle to the host, NULL on error
361 struct GNUNET_TESTBED_Peer *
362 GNUNET_TESTBED_peer_lookup_by_id_ (uint32_t id)
370 * Create the given peer at the specified host using the given
371 * controller. If the given controller is not running on the target
372 * host, it should find or create a controller at the target host and
373 * delegate creating the peer. Explicit delegation paths can be setup
374 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
375 * path exists, a direct link with a subordinate controller is setup
376 * for the first delegated peer to a particular host; the subordinate
377 * controller is then destroyed once the last peer that was delegated
378 * to the remote host is stopped. This function is used in particular
379 * if some other controller has already assigned a unique ID to the
382 * Creating the peer only creates the handle to manipulate and further
383 * configure the peer; use "GNUNET_TESTBED_peer_start" and
384 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
387 * Note that the given configuration will be adjusted by the
388 * controller to avoid port/path conflicts with other peers.
389 * The "final" configuration can be obtained using
390 * 'GNUNET_TESTBED_peer_get_information'.
392 * @param unique_id unique ID for this peer
393 * @param controller controller process to use
394 * @param host host to run the peer on
395 * @param cfg Template configuration to use for the peer. Should exist until
396 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
397 * @param cb the callback to call when the peer has been created
398 * @param cls the closure to the above callback
399 * @return the operation handle
401 struct GNUNET_TESTBED_Operation *
402 GNUNET_TESTBED_peer_create_with_id_ (uint32_t unique_id,
403 struct GNUNET_TESTBED_Controller *controller,
404 struct GNUNET_TESTBED_Host *host,
405 const struct GNUNET_CONFIGURATION_Handle *cfg,
406 GNUNET_TESTBED_PeerCreateCallback cb,
409 struct GNUNET_TESTBED_Peer *peer;
410 struct PeerCreateData *data;
411 struct OperationContext *opc;
413 peer = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Peer));
414 peer->controller = controller;
416 peer->unique_id = unique_id;
417 peer->state = PS_INVALID;
418 data = GNUNET_malloc (sizeof (struct PeerCreateData));
424 opc = GNUNET_malloc (sizeof (struct OperationContext));
427 opc->id = controller->operation_counter++;
428 opc->type = OP_PEER_CREATE;
429 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_create,
430 &oprelease_peer_create);
431 GNUNET_TESTBED_operation_queue_insert_ (controller->opq_parallel_operations,
438 * Create the given peer at the specified host using the given
439 * controller. If the given controller is not running on the target
440 * host, it should find or create a controller at the target host and
441 * delegate creating the peer. Explicit delegation paths can be setup
442 * using 'GNUNET_TESTBED_controller_link'. If no explicit delegation
443 * path exists, a direct link with a subordinate controller is setup
444 * for the first delegated peer to a particular host; the subordinate
445 * controller is then destroyed once the last peer that was delegated
446 * to the remote host is stopped.
448 * Creating the peer only creates the handle to manipulate and further
449 * configure the peer; use "GNUNET_TESTBED_peer_start" and
450 * "GNUNET_TESTBED_peer_stop" to actually start/stop the peer's
453 * Note that the given configuration will be adjusted by the
454 * controller to avoid port/path conflicts with other peers.
455 * The "final" configuration can be obtained using
456 * 'GNUNET_TESTBED_peer_get_information'.
458 * @param controller controller process to use
459 * @param host host to run the peer on
460 * @param cfg Template configuration to use for the peer. Should exist until
461 * operation is cancelled or GNUNET_TESTBED_operation_done() is called
462 * @param cb the callback to call when the peer has been created
463 * @param cls the closure to the above callback
464 * @return the operation handle
466 struct GNUNET_TESTBED_Operation *
467 GNUNET_TESTBED_peer_create (struct GNUNET_TESTBED_Controller *controller,
468 struct GNUNET_TESTBED_Host *host,
469 const struct GNUNET_CONFIGURATION_Handle *cfg,
470 GNUNET_TESTBED_PeerCreateCallback cb,
473 static uint32_t id_gen;
475 return GNUNET_TESTBED_peer_create_with_id_ (++id_gen,
484 * Start the given peer.
486 * @param peer peer to start
487 * @return handle to the operation
489 struct GNUNET_TESTBED_Operation *
490 GNUNET_TESTBED_peer_start (struct GNUNET_TESTBED_Peer *peer)
492 struct OperationContext *opc;
494 opc = GNUNET_malloc (sizeof (struct OperationContext));
495 opc->c = peer->controller;
497 opc->id = opc->c->operation_counter++;
498 opc->type = OP_PEER_START;
499 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_start,
500 &oprelease_peer_start);
501 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
508 * Stop the given peer. The handle remains valid (use
509 * "GNUNET_TESTBED_peer_destroy" to fully clean up the
510 * state of the peer).
512 * @param peer peer to stop
513 * @return handle to the operation
515 struct GNUNET_TESTBED_Operation *
516 GNUNET_TESTBED_peer_stop (struct GNUNET_TESTBED_Peer *peer)
518 struct OperationContext *opc;
520 opc = GNUNET_malloc (sizeof (struct OperationContext));
521 opc->c = peer->controller;
523 opc->id = opc->c->operation_counter++;
524 opc->type = OP_PEER_STOP;
525 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_stop,
526 &oprelease_peer_stop);
527 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
534 * Request information about a peer.
536 * @param peer peer to request information about
537 * @param pit desired information
538 * @return handle to the operation
540 struct GNUNET_TESTBED_Operation *
541 GNUNET_TESTBED_peer_get_information (struct GNUNET_TESTBED_Peer *peer,
542 enum GNUNET_TESTBED_PeerInformationType pit)
544 struct OperationContext *opc;
545 struct PeerInfoData *data;
547 GNUNET_assert (GNUNET_TESTBED_PIT_GENERIC != pit);
548 data = GNUNET_malloc (sizeof (struct PeerInfoData));
551 opc = GNUNET_malloc (sizeof (struct OperationContext));
552 opc->c = peer->controller;
554 opc->type = OP_PEER_INFO;
555 opc->id = opc->c->operation_counter++;
556 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_getinfo,
557 &oprelease_peer_getinfo);
558 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
565 * Change peer configuration. Must only be called while the
566 * peer is stopped. Ports and paths cannot be changed this
569 * @param peer peer to change configuration for
570 * @param cfg new configuration (differences to existing
571 * configuration only)
572 * @return handle to the operation
574 struct GNUNET_TESTBED_Operation *
575 GNUNET_TESTBED_peer_update_configuration (struct GNUNET_TESTBED_Peer *peer,
576 const struct GNUNET_CONFIGURATION_Handle *cfg)
578 // FIXME: handle locally or delegate...
585 * Destroy the given peer; the peer should have been
586 * stopped first (if it was started).
588 * @param peer peer to stop
589 * @return handle to the operation
591 struct GNUNET_TESTBED_Operation *
592 GNUNET_TESTBED_peer_destroy (struct GNUNET_TESTBED_Peer *peer)
594 struct OperationContext *opc;
596 opc = GNUNET_malloc (sizeof (struct OperationContext));
598 opc->c = peer->controller;
599 opc->id = peer->controller->operation_counter++;
600 opc->type = OP_PEER_DESTROY;
601 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_peer_destroy,
602 &oprelease_peer_destroy);
603 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
610 * Manipulate the P2P underlay topology by configuring a link
613 * @param op_cls closure argument to give with the operation event
614 * @param p1 first peer
615 * @param p2 second peer
616 * @param co option to change
617 * @param ... option-specific values
618 * @return handle to the operation, NULL if configuring the link at this
619 * time is not allowed
621 struct GNUNET_TESTBED_Operation *
622 GNUNET_TESTBED_underlay_configure_link (void *op_cls,
623 struct GNUNET_TESTBED_Peer *p1,
624 struct GNUNET_TESTBED_Peer *p2,
625 enum GNUNET_TESTBED_ConnectOption co, ...)
634 * Both peers must have been started before calling this function.
635 * This function then obtains a HELLO from 'p1', gives it to 'p2'
636 * and asks 'p2' to connect to 'p1'.
638 * @param op_cls closure argument to give with the operation event
639 * @param p1 first peer
640 * @param p2 second peer
641 * @return handle to the operation, NULL if connecting these two
642 * peers is fundamentally not possible at this time (peers
643 * not running or underlay disallows)
645 struct GNUNET_TESTBED_Operation *
646 GNUNET_TESTBED_overlay_connect (void *op_cls,
647 struct GNUNET_TESTBED_Peer *p1,
648 struct GNUNET_TESTBED_Peer *p2)
650 struct OperationContext *opc;
651 struct OverlayConnectData *data;
653 GNUNET_assert ((PS_STARTED == p1->state) && (PS_STARTED == p2->state));
654 GNUNET_assert (p1->controller == p2->controller);
655 data = GNUNET_malloc (sizeof (struct OverlayConnectData));
658 opc = GNUNET_malloc (sizeof (struct OperationContext));
660 opc->c = p1->controller;
661 opc->id = opc->c->operation_counter++;
662 opc->type = OP_OVERLAY_CONNECT;
663 opc->op = GNUNET_TESTBED_operation_create_ (opc, &opstart_overlay_connect,
664 &oprelease_overlay_connect);
665 GNUNET_TESTBED_operation_queue_insert_ (opc->c->opq_parallel_operations,
672 /* end of testbed_api_peers.c */