1 /**************************************************************************/
2 /* ---------------------------------------------------------------------- */
3 /* Copyright (C) 2006 - 2008 FRESCOR consortium partners: */
5 /* Universidad de Cantabria, SPAIN */
6 /* University of York, UK */
7 /* Scuola Superiore Sant'Anna, ITALY */
8 /* Kaiserslautern University, GERMANY */
9 /* Univ. Politécnica Valencia, SPAIN */
10 /* Czech Technical University in Prague, CZECH REPUBLIC */
12 /* Thales Communication S.A. FRANCE */
13 /* Visual Tools S.A. SPAIN */
14 /* Rapita Systems Ltd UK */
17 /* See http://www.frescor.org for a link to partners' websites */
19 /* FRESCOR project (FP6/2005/IST/5-034026) is funded */
20 /* in part by the European Union Sixth Framework Programme */
21 /* The European Union is not liable of any use that may be */
22 /* made of this code. */
25 /* This file is part of FRSH (FRescor ScHeduler) */
27 /* FRSH is free software; you can redistribute it and/or modify it */
28 /* under terms of the GNU General Public License as published by the */
29 /* Free Software Foundation; either version 2, or (at your option) any */
30 /* later version. FRSH is distributed in the hope that it will be */
31 /* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */
32 /* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
33 /* General Public License for more details. You should have received a */
34 /* copy of the GNU General Public License along with FRSH; see file */
35 /* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
36 /* Cambridge, MA 02139, USA. */
38 /* As a special exception, including FRSH header files in a file, */
39 /* instantiating FRSH generics or templates, or linking other files */
40 /* with FRSH objects to produce an executable application, does not */
41 /* by itself cause the resulting executable application to be covered */
42 /* by the GNU General Public License. This exception does not */
43 /* however invalidate any other reasons why the executable file might be */
44 /* covered by the GNU Public License. */
45 /**************************************************************************/
49 * @author Michal Sojka <sojkam1@fel.cvut.cz>
50 * @date Mon Oct 20 18:00:18 2008
52 * @brief FRESCOR Contract Broker
61 #include <ul_gavlcust.h>
64 #include <forb/server_id.h>
65 #include <fres_contract.h>
66 #include "fcb_config.h"
67 #include <fosa_clocks_and_timers.h>
68 #ifdef CONFIG_FCB_INET
69 #include <forb/proto_inet.h>
72 UL_LOG_CUST(ulogd_fcb);
73 ul_log_domain_t ulogd_fcb = {UL_LOGL_MSG, "fcb"};
75 fosa_abs_time_t start_time;
79 * Resource identification
82 frsh_resource_type_t type;
83 frsh_resource_id_t id;
93 fres_resource_manager mng; /**< Object reference of the resource manager */
94 gavl_cust_root_field_t allocators; /**< Registered allocators for this resource (from multiple applications/nodes) */
95 ul_list_head_t sc_contracts; /**< Negotiated contracts with spare capacity for this resource */
99 * Resource allocator registered in different nodes/applications
104 fres_resource_allocator ra;
107 struct fcb_contract {
108 fres_contract_id_t id;
109 struct res_alloc *ra; /**< Allocator for this contract TODO: Remove contract if allocator is destroyed */
110 gavl_node_t node_fcb;
111 ul_list_node_t node_sc;
112 ul_list_node_t node_reservation;
117 fosa_abs_time_t end_of_stability_period;
118 struct fres_contract *user_contract; /* The contract sent by user. Set after sucessfull neotiation. */
119 struct fres_contract *requested_contract; /* User request for the contract. Set by prepare_reservation_requests() in the beginning of negotiation. */
120 struct fres_contract *to_be_reserved_contract;
121 struct fres_contract *schedulable_contract;
125 * Contract broker data
128 gavl_cust_root_field_t resources; /**< Registered resources */
129 gavl_cust_root_field_t contracts; /**< Contracts negotiated by this FCB */
132 /** List of contracts to be reserved during spare capacity rebalancing */
133 struct reservation_list {
134 ul_list_head_t fcb_contracts;
138 struct fcb_contract *fcb_contract_new(fres_contract_id_t *id)
140 struct fcb_contract *fcb_contract;
142 fcb_contract = malloc(sizeof(*fcb_contract));
146 memset(fcb_contract, 0, sizeof(*fcb_contract));
147 fcb_contract->id = *id;
152 void fcb_contract_destroy(struct fcb_contract *fcb_contract)
154 if (fcb_contract->user_contract) {
155 fres_contract_destroy(fcb_contract->user_contract);
157 if (fcb_contract->to_be_reserved_contract) {
158 fres_contract_destroy(fcb_contract->to_be_reserved_contract);
160 if (fcb_contract->requested_contract) {
161 fres_contract_destroy(fcb_contract->requested_contract);
163 if (fcb_contract->schedulable_contract) {
164 fres_contract_destroy(fcb_contract->requested_contract);
169 static inline int res_key_cmp(const struct res_key *a,
170 const struct res_key *b)
172 if (a->type < b->type) {
174 } else if (a->type > b->type) {
176 } else if (a->id < b->id) {
178 } else if (a->id > b->id) {
185 /* Container for registered resources */
186 GAVL_CUST_NODE_INT_DEC(fcb_resource /* cust_prefix */, \
187 struct fcb /* cust_root_t */, \
188 struct resource/* cust_item_t */, \
189 struct res_key /* cust_key_t */, \
190 resources /* cust_root_node */, \
191 node /* cust_item_node */, \
192 key /* cust_item_key */, \
193 res_key_cmp /* cust_cmp_fnc */);
195 GAVL_CUST_NODE_INT_IMP(fcb_resource /* cust_prefix */, \
196 struct fcb /* cust_root_t */, \
197 struct resource/* cust_item_t */, \
198 struct res_key /* cust_key_t */, \
199 resources /* cust_root_node */, \
200 node /* cust_item_node */, \
201 key /* cust_item_key */, \
202 res_key_cmp /* cust_cmp_fnc */);
204 /* Container for allocators registered for a given resource */
205 GAVL_CUST_NODE_INT_DEC(fcb_alloc /* cust_prefix */, \
206 struct resource /* cust_root_t */, \
207 struct res_alloc /* cust_item_t */, \
208 forb_server_id /* cust_key_t */, \
209 allocators /* cust_root_node */, \
210 node /* cust_item_node */, \
211 app /* cust_item_key */, \
212 fres_contract_id_cmp /* cust_cmp_fnc */);
214 GAVL_CUST_NODE_INT_IMP(fcb_alloc /* cust_prefix */, \
215 struct resource /* cust_root_t */, \
216 struct res_alloc /* cust_item_t */, \
217 forb_server_id /* cust_key_t */, \
218 allocators /* cust_root_node */, \
219 node /* cust_item_node */, \
220 app /* cust_item_key */, \
221 forb_server_id_cmp /* cust_cmp_fnc */);
223 /* Container for contracts with spare capacity negotiated for a given resource */
224 UL_LIST_CUST_DEC(sc_contracts /* cust_prefix */, \
225 struct resource /* cust_head_t */, \
226 struct fcb_contract /* cust_item_t */, \
227 sc_contracts /* cust_head_field */, \
228 node_sc /* cust_node_field */);
230 UL_LIST_CUST_DEC(reservation_list /* cust_prefix */, \
231 struct reservation_list /* cust_head_t */, \
232 struct fcb_contract /* cust_item_t */, \
233 fcb_contracts /* cust_head_field */, \
234 node_reservation /* cust_node_field */);
236 /* Container for negotiated contracts */
237 GAVL_CUST_NODE_INT_DEC(fcb_contract /* cust_prefix */, \
238 struct fcb /* cust_root_t */, \
239 struct fcb_contract /* cust_item_t */, \
240 fres_contract_id_t /* cust_key_t */, \
241 contracts /* cust_root_node */, \
242 node_fcb /* cust_item_node */, \
243 id /* cust_item_key */, \
244 fres_contract_id_cmp /* cust_cmp_fnc */);
247 GAVL_CUST_NODE_INT_IMP(fcb_contract /* cust_prefix */, \
248 struct fcb /* cust_root_t */, \
249 struct fcb_contract /* cust_item_t */, \
250 fres_contract_id_t /* cust_key_t */, \
251 contracts /* cust_root_node */, \
252 node_fcb /* cust_item_node */, \
253 id /* cust_item_key */, \
254 fres_contract_id_cmp /* cust_cmp_fnc */);
256 #include "fcb_contract_gavl.inc"
260 #define o2fcb(o) (struct fcb*)forb_instance_data(o)
263 get_res_key(const struct fres_contract *contract, struct res_key *key)
265 fres_block_resource *block_res;
267 block_res = fres_contract_get_resource(contract);
269 ul_logerr("No resource specified\n");
272 key->type = block_res->resource_type;
273 key->id = block_res->resource_id;
279 * Fills in an array of fcb_contracts according to requests submited
280 * to negotiate_contracts(). For every contract in @a contracts, there
281 * is one fcb_contract in @a fcb_contracts array.
284 * @param fcb_contracts Where to store pointers to fcb_contracts
285 * @param resource Resource for which negotiation is being done.
286 * @param app Application which requests negotiation
287 * @param contracts Contracts submited to negotiate_contracts()
288 * @param num Number of contracts in contracts (which is the same as the number in fcb_contracts).
290 * @return Zero on success, non-zero error code on error.
293 prepare_fcb_contracts(struct fcb *fcb, struct fcb_contract *fcb_contracts[],
294 struct resource **resource,
296 struct fres_contract *contracts[], int num)
299 struct fcb_contract *fc;
300 struct res_alloc *ra;
301 struct res_key key, key2 = {-1,-1};
303 for (i=0; i<num; i++) {
304 struct fres_contract *c = contracts[i];
306 if (fres_contract_id_is_empty(&c->id)) {
307 /* Normal negotiation request */
308 forb_uuid_generate((forb_uuid_t *)&c->id);
309 fc = fcb_contract_new(&c->id);
312 fcb_contracts[i] = fc;
313 if (!get_res_key(c, &key)) {
314 return FRSH_ERR_RESOURCE_ID_INVALID;
317 fc = fcb_contract_find(fcb, &c->id);
320 fres_contract_id_to_string(str, &c->id, sizeof(str));
321 ul_logerr("Attempt to change unknown contract %s\n", str);
322 return FRES_ERR_NOTHING_TO_RENEGOTIATE;
324 fcb_contracts[i] = fc;
325 if (fres_contract_get_num_blocks(c) == 0) {
327 get_res_key(fc->user_contract, &key);
330 if (!get_res_key(c, &key)) {
331 return FRSH_ERR_RESOURCE_ID_INVALID;
336 fc->requested_contract = c;
338 /* Check that all contracts are for the same resource */
341 *resource = fcb_resource_find(fcb, &key);
343 ul_logerr("No resource manager for %d.%d registered\n",
345 return FRSH_ERR_RESOURCE_ID_INVALID;
348 else if (key.type != key2.type ||
350 ul_logerr("Contract #%d differs in resource!\n", i);
351 return FRSH_ERR_RESOURCE_ID_INVALID;
354 /* Find allocator for this request */
355 ra = fcb_alloc_find(*resource, app);
358 forb_server_id_to_string(str, app, sizeof(str));
359 ul_logerr("No resource allocator found for %d.%d and %s\n",
360 (*resource)->key.type, (*resource)->key.id, str);
361 return FRES_ERR_NO_RESOURCE_ALLOCATOR;
369 * @param resource Resource for which to rebalance capacity and negotiate new contracts
370 * @param fcb_contract New requests to negotiate
371 * @param num The number of elements in @a fcb_contract
372 * @param[out] rl List with changed contracts to be commited
375 prepare_reservation_list(struct resource *resource,
376 struct fcb_contract *fcb_contract[], int num,
377 struct reservation_list *rl)
381 struct fcb_contract *fc;
383 reservation_list_init_head(rl);
385 for (i=0; i<num; i++) {
386 assert(fcb_contract[i]->requested_contract != NULL);
387 reservation_list_insert(rl, fcb_contract[i]);
390 fosa_clock_get_time(CLOCK_REALTIME, &now);
391 ul_list_for_each(sc_contracts, resource, fc) {
392 if (fosa_abs_time_smaller(fc->end_of_stability_period, now) &&
393 fc->requested_contract == NULL) /* Do not insert contract inserted above */
395 reservation_list_insert(rl, fc);
404 * @param resource Resource for which to rebalance capacity and negotiate new contracts
405 * @param rl List with changed contracts to be commited
407 * @return Zero on success, non-zero error code on error
410 rebalance_spare_capacity_and_reserve(struct resource *resource,
411 struct reservation_list *rl)
415 struct fcb_contract *fc;
416 fres_block_spare_capacity *s;
418 fres_contract_ptr_seq contracts;
419 forb_sequence_alloc_buf(contracts, rl->length);
420 contracts._length = rl->length;
422 /* Initialize optimization */
423 ul_list_for_each(reservation_list, rl, fc) {
424 fc->to_be_reserved_contract =
425 fc->requested_contract ? fres_contract_duplicate(fc->requested_contract) :
426 fc->user_contract ? fres_contract_duplicate(fc->user_contract) :
428 assert(fc->to_be_reserved_contract != NULL);
430 forb_sequence_elem(contracts, i) = fc->to_be_reserved_contract;
433 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
434 if (s && s->granularity == FRSH_GR_DISCRETE) {
435 fc->sc_variant.initial = s->variants._length - 1;
436 fc->sc_variant.try = fc->sc_variant.initial;
440 bool all_combinations_tried;
441 int criterion, best_criterion = -1;
442 struct fcb_contract *fcb_changed;
443 /* Exhaustive search. Try all combinations of spare capacity
444 * variants and find the one with best creterion. */
446 all_combinations_tried = true;
449 /* Prepare spare capacity variant */
450 ul_list_for_each(reservation_list, rl, fc) {
451 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
452 /* TODO: Simulate continuous granularity by discretization */
453 if (s && s->granularity == FRSH_GR_DISCRETE) {
454 fres_container_copy(fc->to_be_reserved_contract->container,
455 forb_sequence_elem(s->variants, fc->sc_variant.try));
456 criterion += fc->sc_variant.try;
458 if (fcb_changed == NULL) {
459 /* Chnage tried variant for the next round */
460 fc->sc_variant.try = fc->sc_variant.try > 0 ?
461 fc->sc_variant.try - 1 :
462 s->variants._length - 1;
463 /* Do not change other
464 * contracts unless we have
465 * tried all variants */
466 if (fc->sc_variant.try != fc->sc_variant.initial) {
470 if (fc->sc_variant.try != fc->sc_variant.initial)
471 all_combinations_tried = false;
475 if (criterion > best_criterion) {
476 CORBA_Environment ev;
477 /* Reserve contract */
478 ret = fres_resource_manager_reserve_contracts(resource->mng, &contracts, &ev);
479 if (forb_exception_occurred(&ev)) {
480 ret = fres_forbex2err(&ev);
481 ul_logerr("FORB exception when reserving contracts\n");
485 ul_logerr("Contract reservation error %d\n", ret);
486 ret = FRES_ERR_ADMISSION_TEST;
489 if (ret == 0) { /* negotiation succeeded */
490 best_criterion = criterion;
493 } while (!all_combinations_tried);
495 if (best_criterion == -1) {
496 ret = FRSH_ERR_CONTRACT_REJECTED;
498 /* At least some variant succeeded */
500 sc_contracts_init_head(resource);
501 ul_list_for_each(reservation_list, rl, fc) {
502 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
503 if (s && s->granularity == FRSH_GR_DISCRETE) {
504 sc_contracts_insert(resource, fc);
509 ul_list_for_each(reservation_list, rl, fc) {
510 fres_contract_destroy(fc->to_be_reserved_contract);
511 fc->to_be_reserved_contract = NULL;
513 forb_sequence_free_buf(contracts, forb_no_destructor);
518 * Create/change VReses according to @a schedulable_contracts.
520 * There might be more allocators for schedulable contracts, so merge
521 * adjacent vreses with the same allocator together and create/change
522 * them in one step. Also the order of schedulable contracts might be
523 * different from the initial order od ids in commit_contracts()
524 * therefore we have to search for every contract.
527 change_vreses(struct fcb *fcb, fres_contract_ptr_seq *schedulable_contracts)
529 struct res_alloc *last_ra = NULL;
530 fres_contract_ptr_seq vreses;
532 CORBA_Environment ev;
534 forb_sequence_alloc_buf(vreses, schedulable_contracts->_length);
537 for (i=0; i<schedulable_contracts->_length; i++) {
538 struct fcb_contract *fc;
539 struct fres_contract *sc = schedulable_contracts->_buffer[i];
541 fc = fcb_contract_find(fcb, &sc->id);
544 if (true /* TODO: if the schedulable contract is changed */) {
545 if (last_ra != fc->ra) {
546 if (vreses._length) {
547 ret = fres_resource_allocator_change_vreses(last_ra->ra,
549 if (forb_exception_occurred(&ev)) {
550 ret = fres_forbex2err(&ev);
557 vreses._buffer[vreses._length] = sc;
559 fres_contract_destroy(fc->schedulable_contract);
560 fc->schedulable_contract = fres_contract_duplicate(sc);
565 ret = fres_resource_allocator_change_vreses(last_ra->ra,
567 if (forb_exception_occurred(&ev))
568 ret = fres_forbex2err(&ev);
570 forb_sequence_free_buf(vreses, forb_no_destructor);
575 negotiate_contracts(fres_contract_broker obj,
576 const fres_contract_ptr_seq* contracts,
577 fres_contract_id_seq** ids_out,
578 CORBA_Environment *ev)
580 struct fcb *fcb = o2fcb(obj);
581 struct resource *resource;
584 fres_contract_ptr_seq *schedulable_contracts;
585 struct fcb_contract **fcb_contracts, *fc;
587 fres_contract_id_seq commit_ids;
589 /* Prepare output sequence for the case we return eariler with
591 forb_sequence_alloc(*ids_out, 0);
593 ev->major = FORB_EX_NO_MEMORY;
596 CORBA_sequence_set_release(*ids_out, CORBA_TRUE);
598 forb_get_req_source(obj, &app);
600 fcb_contracts = malloc(sizeof(fcb_contracts[0])*contracts->_length);
601 if (!fcb_contracts) {
605 memset(fcb_contracts, 0, sizeof(fcb_contracts[0])*contracts->_length);
607 ret = prepare_fcb_contracts(fcb, fcb_contracts, &resource,
608 &app, contracts->_buffer, contracts->_length);
610 goto err_free_fcb_contracts;
612 struct reservation_list rl;
613 prepare_reservation_list(resource,
614 fcb_contracts, contracts->_length,
617 /* Allocate all the needed memory before doing reservation. If
618 * there is no enough memory, it has no sense to call resource
620 forb_sequence_alloc_buf(commit_ids, rl.length);
621 if (!commit_ids._buffer) {
623 goto err_free_fcb_contracts;
626 /* Reserve contracts */
627 ret = rebalance_spare_capacity_and_reserve(resource, &rl);
629 if (ret == FRSH_ERR_CONTRACT_REJECTED) {
630 ul_logmsg("Contract(s) was/were rejected\n");
633 fres_strerror(ret, msg, sizeof(msg));
634 ul_logerr("Reservation error: %s\n", msg);
636 goto err_free_fcb_contracts;
639 /* Commit contracts */
640 commit_ids._length = rl.length;
642 ul_list_for_each(reservation_list, &rl, fc) {
643 forb_sequence_elem(commit_ids, i) = fc->id;
647 fres_resource_manager_commit_contracts(resource->mng, &commit_ids,
648 &schedulable_contracts, ev);
649 if (forb_exception_occurred(ev)) {
650 ret = fres_forbex2err(ev);
651 goto err_cancel_reservation;
654 /* Add new contracts to our fcb database for later
655 * reference. Canceled contracts are removed below. */
656 for (i=0; i<contracts->_length; i++) {
657 fc = fcb_contracts[i];
659 if (fc->user_contract) {
660 if (fres_contract_get_num_blocks(fc->requested_contract) > 0) {
662 fres_contract_destroy(fc->user_contract);
663 fc->user_contract = fres_contract_duplicate(fc->requested_contract);
664 /* Note: requested_contract is also
665 * pointed by contracts parameter and
666 * will be freed by FORB. */
667 fc->requested_contract = NULL;
670 /* Insert new contracts */
671 fcb_contract_insert(fcb, fcb_contracts[i]);
672 fc->user_contract = fres_contract_duplicate(fc->requested_contract);
673 fc->requested_contract = NULL;
674 /* See the note above. */
678 ret = change_vreses(fcb, schedulable_contracts);
680 goto err_cancel_reservation;
682 forb_sequence_free(schedulable_contracts, fres_contract_ptr_destroy);
684 ul_logerr("VRes was not created\n");
685 goto err_cancel_contracts;
689 /* Return IDs and delete canceled contracts from out database */
690 forb_sequence_alloc_buf(**ids_out, contracts->_length);
691 if (!(*ids_out)->_buffer) {
692 ev->major = FORB_EX_NO_MEMORY;
693 goto err_cancel_contracts;
695 (*ids_out)->_length = contracts->_length;
696 for (i=0; i<contracts->_length; i++) {
697 struct fcb_contract *fc = fcb_contracts[i];
698 forb_sequence_elem(**ids_out, i) = fc->id;
700 if (fc->requested_contract &&
701 fres_contract_get_num_blocks(fc->requested_contract) == 0) {
702 fcb_contract_delete(fcb, fc);
703 /* Note: requested_contract is also pointed by
704 * contracts parameter and will be freed by FORB. */
705 fc->requested_contract = NULL;
706 fcb_contract_destroy(fc);
711 err_cancel_contracts:
713 goto err_free_fcb_contracts;
714 err_cancel_reservation:
715 fres_resource_manager_cancel_reservations(resource->mng, &commit_ids, ev);
716 err_free_fcb_contracts:
717 for (i=0; i<contracts->_length; i++) {
718 fc = fcb_contracts[i];
719 if (fc && !fc->user_contract) {
720 fcb_contracts[i]->requested_contract = NULL; /* Destroyed by FORB */
721 fcb_contract_destroy(fcb_contracts[i]);
729 void redistribute_spare_capacity(fres_contract_broker obj,
730 const frsh_resource_type_t restype,
731 const frsh_resource_id_t resid,
732 CORBA_Environment *ev)
734 struct fcb *fcb = o2fcb(obj);
735 struct res_key key = {restype, resid };
736 struct resource *resource;
737 struct reservation_list rl;
739 resource = fcb_resource_find(fcb, &key);
741 prepare_reservation_list(resource, NULL, 0, &rl);
743 /* forb_sequence_alloc(ids, rl.length); */
744 /* if (!ids || !ids->_buffer) { */
745 /* ev->major = FORB_EX_NO_MEMORY; */
746 /* goto err_free_fcb_contracts; */
748 /* CORBA_sequence_set_release(ids, CORBA_TRUE); */
749 /* *ids_out = ids; /\* ids is freed by FORB *\/ */
752 rebalance_spare_capacity_and_reserve(resource, &rl);
756 CORBA_long register_resource(fres_contract_broker obj,
757 const frsh_resource_type_t restype,
758 const frsh_resource_id_t resid,
759 const fres_resource_desc *desc,
760 CORBA_Environment *ev)
762 struct fcb *fcb = o2fcb(obj);
763 struct resource *res, *res2;
765 res = malloc(sizeof(*res));
767 memset(res, 0, sizeof(*res));
768 res->key.type = restype;
770 res2 = fcb_resource_find(fcb, &res->key);
772 if (forb_object_is_stale(res2->mng)) {
773 ul_logmsg("Removing stale manager for resource %d.%d\n",
775 forb_object_release(res2->mng);
776 fcb_resource_delete(fcb, res2);
777 /* TODO: Delete also all allocators associated
778 * with this stale resource manager. */
782 ul_logerr("Resource manager %d.%d already registered\n",
787 res->mng = forb_object_duplicate(desc->manager);
788 res->name = desc->name;
790 fcb_alloc_init_root_field(res);
791 sc_contracts_init_head(res);
792 ul_logmsg("Registering manager for resource \"%s\" (%d.%d)\n",
793 res->name, restype, resid);
794 fcb_resource_insert(fcb, res);
803 CORBA_long register_allocator(fres_contract_broker obj,
804 const frsh_resource_type_t restype,
805 const frsh_resource_id_t resid,
806 const fres_resource_allocator ra_obj,
807 CORBA_Environment *ev)
809 struct fcb *fcb = o2fcb(obj);
810 struct resource *res;
811 struct res_alloc *ra;
812 struct res_key resource;
813 forb_server_id server_id;
814 char server_id_str[40];
816 forb_get_server_id(ra_obj, &server_id);
817 forb_server_id_to_string(server_id_str, &server_id, sizeof(server_id_str));
818 ul_logmsg("Registering allocator for resource %d.%d in app %s\n",
819 restype, resid, server_id_str);
821 resource.type = restype;
823 res = fcb_resource_find(fcb, &resource);
825 ul_logerr("No manager found for %d.%d. Unable to register the allocator!\n",
829 ra = fcb_alloc_find(res, &server_id);
831 char *str = forb_object_to_string(ra_obj);
832 ul_logerr("Allocator from already registered (%s)\n",
837 ra = malloc(sizeof(*ra));
842 ra->ra = forb_object_duplicate(ra_obj);
843 fcb_alloc_insert(res, ra);
846 return FRSH_ERR_RESOURCE_ID_INVALID;
849 void get_resources(fres_contract_broker obj, fres_resource_seq** resources, CORBA_Environment *ev)
851 struct fcb *fcb = o2fcb(obj);
852 fres_resource_seq *seq;
853 struct resource *res;
856 seq = malloc(sizeof(*seq));
858 ev->major = FORB_EX_NO_MEMORY;
861 memset(seq, 0, sizeof(*seq));
864 gavl_cust_for_each(fcb_resource, fcb, res) {
868 seq->_buffer = CORBA_sequence_fres_resource_allocbuf(n);
873 gavl_cust_for_each(fcb_resource, fcb, res) {
874 seq->_buffer[n].restype = res->key.type;
875 seq->_buffer[n].resid = res->key.id;
876 seq->_buffer[n].desc.manager = res->mng;
877 seq->_buffer[n].desc.name = res->name;
884 #ifdef CONFIG_FCB_INET
885 static int register_inet_port(forb_orb orb)
887 forb_port_t *port = forb_malloc(sizeof(*port));
889 struct in_addr listen_on;
893 memset(port, 0, sizeof(*port));
894 listen_on.s_addr = INADDR_ANY;
895 ret = forb_inet_port_init(&port->desc, listen_on);
898 ret = forb_register_port(orb, port);
903 struct forb_fres_contract_broker_impl impl = {
904 .negotiate_contracts = negotiate_contracts,
905 .register_resource = register_resource,
906 .register_allocator = register_allocator,
907 .redistribute_spare_capacity = redistribute_spare_capacity,
908 .get_resources = get_resources,
911 void peer_discovery_callback(const forb_orb peer_orb, const char *orb_id)
913 forb_server_id server_id;
914 char server_id_str[sizeof(forb_server_id)*2+1];
916 forb_get_server_id(peer_orb, &server_id);
917 forb_server_id_to_string(server_id_str, &server_id, sizeof(server_id_str));
919 ul_logmsg("peer discovered: %s (orb_id '%s')\n", server_id_str, orb_id);
925 if (strcmp(orb_id, "org.frescor.fcb") == 0) {
927 fosa_rel_time_t delay;
928 fosa_clock_get_time(CLOCK_REALTIME, &now);
929 delay = fosa_abs_time_extract_interval(start_time, now);
930 ul_logmsg("node joined: %s (time %ld ms)\n", server_id_str,
931 fosa_rel_time_to_msec(delay));
935 void peer_dead_callback(const forb_orb peer_orb, const char *orb_id)
939 int main(int argc, char *argv[])
943 fres_contract_broker fcb;
944 forb_executor_t executor;
946 forb_init_attr_t attr = {
947 .orb_id = "org.frescor.fcb",
948 .peer_discovery_callback = peer_discovery_callback,
949 .peer_dead_callback = peer_dead_callback,
953 fosa_clock_get_time(CLOCK_REALTIME, &start_time);
955 orb = forb_init(&argc, &argv, &attr);
956 if (!orb) error(1, errno, "FORB initialization failed");
958 #ifdef CONFIG_FCB_INET
959 ret = register_inet_port(orb);
960 if (ret) error(0, errno, "INET port registration failed");
963 fcb_resource_init_root_field(&fcb_data);
964 fcb_contract_init_root_field(&fcb_data);
966 fcb = forb_fres_contract_broker_new(orb, &impl, &fcb_data);
967 if (!fcb) error(1, errno, "forb_fres_contract_broker_new failed");
969 /* Prepare executor before we register the fcb reference,
970 * so that no reuqests are lost */
971 ret = forb_executor_init(&executor);
972 if (ret) error(1, errno, "forb_executor_init failed");
974 ret = forb_executor_register_object(&executor, fcb);
975 if (ret) error(1, errno, "forb_executor_register_object failed");
977 ret = forb_register_reference(fcb, fres_contract_broker_reg_name);
978 if (ret) error(1, errno, "forb_register_reference() failed");
980 ul_logmsg("Waiting for requests\n");
981 ret = forb_executor_run(&executor);
982 if (ret) error(1, errno, "forb_executor_run failed");