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 if (!forb_sequence_alloc_buf(contracts, rl->length)) {
422 contracts._length = rl->length;
424 /* Initialize optimization */
425 ul_list_for_each(reservation_list, rl, fc) {
426 fc->to_be_reserved_contract =
427 fc->requested_contract ? fres_contract_duplicate(fc->requested_contract) :
428 fc->user_contract ? fres_contract_duplicate(fc->user_contract) :
430 assert(fc->to_be_reserved_contract != NULL);
432 forb_sequence_elem(contracts, i) = fc->to_be_reserved_contract;
435 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
436 if (s && s->granularity == FRSH_GR_DISCRETE) {
437 fc->sc_variant.initial = s->variants._length - 1;
438 fc->sc_variant.try = fc->sc_variant.initial;
442 bool all_combinations_tried;
443 int criterion, best_criterion = -1;
444 struct fcb_contract *fcb_changed;
445 /* Exhaustive search. Try all combinations of spare capacity
446 * variants and find the one with best creterion. */
448 all_combinations_tried = true;
451 /* Prepare spare capacity variant */
452 ul_list_for_each(reservation_list, rl, fc) {
453 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
454 /* TODO: Simulate continuous granularity by discretization */
455 if (s && s->granularity == FRSH_GR_DISCRETE) {
456 fres_container_copy(fc->to_be_reserved_contract->container,
457 forb_sequence_elem(s->variants, fc->sc_variant.try));
458 criterion += fc->sc_variant.try;
460 if (fcb_changed == NULL) {
461 /* Chnage tried variant for the next round */
462 fc->sc_variant.try = fc->sc_variant.try > 0 ?
463 fc->sc_variant.try - 1 :
464 s->variants._length - 1;
465 /* Do not change other
466 * contracts unless we have
467 * tried all variants */
468 if (fc->sc_variant.try != fc->sc_variant.initial) {
472 if (fc->sc_variant.try != fc->sc_variant.initial)
473 all_combinations_tried = false;
477 if (criterion > best_criterion) {
478 CORBA_Environment ev;
479 /* Reserve contract */
480 ret = fres_resource_manager_reserve_contracts(resource->mng, &contracts, &ev);
481 if (forb_exception_occurred(&ev)) {
482 ret = fres_forbex2err(&ev);
483 ul_logerr("FORB exception when reserving contracts\n");
487 ul_logerr("Contract reservation error %d\n", ret);
488 ret = FRES_ERR_ADMISSION_TEST;
491 if (ret == 0) { /* negotiation succeeded */
492 best_criterion = criterion;
495 } while (!all_combinations_tried);
497 if (best_criterion == -1) {
498 ret = FRSH_ERR_CONTRACT_REJECTED;
500 /* At least some variant succeeded */
502 sc_contracts_init_head(resource);
503 ul_list_for_each(reservation_list, rl, fc) {
504 s = fres_contract_get_spare_capacity(fc->to_be_reserved_contract);
505 if (s && s->granularity == FRSH_GR_DISCRETE) {
506 sc_contracts_insert(resource, fc);
511 ul_list_for_each(reservation_list, rl, fc) {
512 fres_contract_destroy(fc->to_be_reserved_contract);
513 fc->to_be_reserved_contract = NULL;
515 forb_sequence_free_buf(contracts, forb_no_destructor);
520 * Create/change VReses according to @a schedulable_contracts.
522 * There might be more allocators for schedulable contracts, so merge
523 * adjacent vreses with the same allocator together and create/change
524 * them in one step. Also the order of schedulable contracts might be
525 * different from the initial order od ids in commit_contracts()
526 * therefore we have to search for every contract.
529 change_vreses(struct fcb *fcb, fres_contract_ptr_seq *schedulable_contracts)
531 struct res_alloc *last_ra = NULL;
532 fres_contract_ptr_seq vreses;
534 CORBA_Environment ev;
536 if (!forb_sequence_alloc_buf(vreses, schedulable_contracts->_length)) {
541 for (i=0; i<schedulable_contracts->_length; i++) {
542 struct fcb_contract *fc;
543 struct fres_contract *sc = schedulable_contracts->_buffer[i];
545 fc = fcb_contract_find(fcb, &sc->id);
548 if (true /* TODO: if the schedulable contract is changed */) {
549 if (last_ra != fc->ra) {
550 if (vreses._length) {
551 ret = fres_resource_allocator_change_vreses(last_ra->ra,
553 if (forb_exception_occurred(&ev)) {
554 ret = fres_forbex2err(&ev);
561 vreses._buffer[vreses._length] = sc;
563 fres_contract_destroy(fc->schedulable_contract);
564 fc->schedulable_contract = fres_contract_duplicate(sc);
569 ret = fres_resource_allocator_change_vreses(last_ra->ra,
571 if (forb_exception_occurred(&ev))
572 ret = fres_forbex2err(&ev);
574 forb_sequence_free_buf(vreses, forb_no_destructor);
579 negotiate_contracts(fres_contract_broker obj,
580 const fres_contract_ptr_seq* contracts,
581 fres_contract_id_seq** ids_out,
582 CORBA_Environment *ev)
584 struct fcb *fcb = o2fcb(obj);
585 struct resource *resource;
588 fres_contract_ptr_seq *schedulable_contracts;
589 struct fcb_contract **fcb_contracts, *fc;
591 fres_contract_id_seq commit_ids;
593 /* Prepare output sequence for the case we return eariler with
595 forb_sequence_alloc(*ids_out, 0);
597 ev->major = FORB_EX_NO_MEMORY;
600 CORBA_sequence_set_release(*ids_out, CORBA_TRUE);
602 forb_get_req_source(obj, &app);
604 fcb_contracts = malloc(sizeof(fcb_contracts[0])*contracts->_length);
605 if (!fcb_contracts) {
609 memset(fcb_contracts, 0, sizeof(fcb_contracts[0])*contracts->_length);
611 ret = prepare_fcb_contracts(fcb, fcb_contracts, &resource,
612 &app, contracts->_buffer, contracts->_length);
614 goto err_free_fcb_contracts;
616 struct reservation_list rl;
617 prepare_reservation_list(resource,
618 fcb_contracts, contracts->_length,
621 /* Allocate all the needed memory before doing reservation. If
622 * there is no enough memory, it has no sense to call resource
624 if (!forb_sequence_alloc_buf(commit_ids, rl.length)) {
626 goto err_free_fcb_contracts;
629 /* Reserve contracts */
630 ret = rebalance_spare_capacity_and_reserve(resource, &rl);
632 if (ret == FRSH_ERR_CONTRACT_REJECTED) {
633 ul_logmsg("Contract(s) was/were rejected\n");
636 fres_strerror(ret, msg, sizeof(msg));
637 ul_logerr("Reservation error: %s\n", msg);
639 goto err_free_fcb_contracts;
642 /* Commit contracts */
643 commit_ids._length = rl.length;
645 ul_list_for_each(reservation_list, &rl, fc) {
646 forb_sequence_elem(commit_ids, i) = fc->id;
650 fres_resource_manager_commit_contracts(resource->mng, &commit_ids,
651 &schedulable_contracts, ev);
652 if (forb_exception_occurred(ev)) {
653 ret = fres_forbex2err(ev);
654 goto err_cancel_reservation;
657 /* Add new contracts to our fcb database for later
658 * reference. Canceled contracts are removed below. */
659 for (i=0; i<contracts->_length; i++) {
660 fc = fcb_contracts[i];
662 if (fc->user_contract) {
663 if (fres_contract_get_num_blocks(fc->requested_contract) > 0) {
665 fres_contract_destroy(fc->user_contract);
666 fc->user_contract = fres_contract_duplicate(fc->requested_contract);
667 /* Note: requested_contract is also
668 * pointed by contracts parameter and
669 * will be freed by FORB. */
670 fc->requested_contract = NULL;
673 /* Insert new contracts */
674 fcb_contract_insert(fcb, fcb_contracts[i]);
675 fc->user_contract = fres_contract_duplicate(fc->requested_contract);
676 fc->requested_contract = NULL;
677 /* See the note above. */
681 ret = change_vreses(fcb, schedulable_contracts);
683 goto err_cancel_reservation;
685 forb_sequence_free(schedulable_contracts, fres_contract_ptr_destroy);
687 ul_logerr("VRes was not created\n");
688 goto err_cancel_contracts;
692 /* Return IDs and delete canceled contracts from out database */
693 if (!forb_sequence_alloc_buf(**ids_out, contracts->_length)) {
694 ev->major = FORB_EX_NO_MEMORY;
695 goto err_cancel_contracts;
697 (*ids_out)->_length = contracts->_length;
698 for (i=0; i<contracts->_length; i++) {
699 struct fcb_contract *fc = fcb_contracts[i];
700 forb_sequence_elem(**ids_out, i) = fc->id;
702 if (fc->requested_contract &&
703 fres_contract_get_num_blocks(fc->requested_contract) == 0) {
704 fcb_contract_delete(fcb, fc);
705 /* Note: requested_contract is also pointed by
706 * contracts parameter and will be freed by FORB. */
707 fc->requested_contract = NULL;
708 fcb_contract_destroy(fc);
713 err_cancel_contracts:
715 goto err_free_fcb_contracts;
716 err_cancel_reservation:
717 fres_resource_manager_cancel_reservations(resource->mng, &commit_ids, ev);
718 err_free_fcb_contracts:
719 for (i=0; i<contracts->_length; i++) {
720 fc = fcb_contracts[i];
721 if (fc && !fc->user_contract) {
722 fcb_contracts[i]->requested_contract = NULL; /* Destroyed by FORB */
723 fcb_contract_destroy(fcb_contracts[i]);
731 void redistribute_spare_capacity(fres_contract_broker obj,
732 const frsh_resource_type_t restype,
733 const frsh_resource_id_t resid,
734 CORBA_Environment *ev)
736 struct fcb *fcb = o2fcb(obj);
737 struct res_key key = {restype, resid };
738 struct resource *resource;
739 struct reservation_list rl;
741 resource = fcb_resource_find(fcb, &key);
743 prepare_reservation_list(resource, NULL, 0, &rl);
745 /* forb_sequence_alloc(ids, rl.length); */
746 /* if (!ids || !ids->_buffer) { */
747 /* ev->major = FORB_EX_NO_MEMORY; */
748 /* goto err_free_fcb_contracts; */
750 /* CORBA_sequence_set_release(ids, CORBA_TRUE); */
751 /* *ids_out = ids; /\* ids is freed by FORB *\/ */
754 rebalance_spare_capacity_and_reserve(resource, &rl);
758 CORBA_long register_resource(fres_contract_broker obj,
759 const frsh_resource_type_t restype,
760 const frsh_resource_id_t resid,
761 const fres_resource_desc *desc,
762 CORBA_Environment *ev)
764 struct fcb *fcb = o2fcb(obj);
765 struct resource *res, *res2;
767 res = malloc(sizeof(*res));
769 memset(res, 0, sizeof(*res));
770 res->key.type = restype;
772 res2 = fcb_resource_find(fcb, &res->key);
774 if (forb_object_is_stale(res2->mng)) {
775 ul_logmsg("Removing stale manager for resource %d.%d\n",
777 forb_object_release(res2->mng);
778 fcb_resource_delete(fcb, res2);
779 /* TODO: Delete also all allocators associated
780 * with this stale resource manager. */
784 ul_logerr("Resource manager %d.%d already registered\n",
789 res->mng = forb_object_duplicate(desc->manager);
790 res->name = desc->name;
792 fcb_alloc_init_root_field(res);
793 sc_contracts_init_head(res);
794 ul_logmsg("Registering manager for resource \"%s\" (%d.%d)\n",
795 res->name, restype, resid);
796 fcb_resource_insert(fcb, res);
805 CORBA_long register_allocator(fres_contract_broker obj,
806 const frsh_resource_type_t restype,
807 const frsh_resource_id_t resid,
808 const fres_resource_allocator ra_obj,
809 CORBA_Environment *ev)
811 struct fcb *fcb = o2fcb(obj);
812 struct resource *res;
813 struct res_alloc *ra;
814 struct res_key resource;
815 forb_server_id server_id;
816 char server_id_str[40];
818 forb_get_server_id(ra_obj, &server_id);
819 forb_server_id_to_string(server_id_str, &server_id, sizeof(server_id_str));
820 ul_logmsg("Registering allocator for resource %d.%d in app %s\n",
821 restype, resid, server_id_str);
823 resource.type = restype;
825 res = fcb_resource_find(fcb, &resource);
827 ul_logerr("No manager found for %d.%d. Unable to register the allocator!\n",
831 ra = fcb_alloc_find(res, &server_id);
833 char *str = forb_object_to_string(ra_obj);
834 ul_logerr("Allocator from already registered (%s)\n",
839 ra = malloc(sizeof(*ra));
844 ra->ra = forb_object_duplicate(ra_obj);
845 fcb_alloc_insert(res, ra);
848 return FRSH_ERR_RESOURCE_ID_INVALID;
851 void get_resources(fres_contract_broker obj, fres_resource_seq** resources, CORBA_Environment *ev)
853 struct fcb *fcb = o2fcb(obj);
854 fres_resource_seq *seq;
855 struct resource *res;
858 seq = malloc(sizeof(*seq));
860 ev->major = FORB_EX_NO_MEMORY;
863 memset(seq, 0, sizeof(*seq));
866 gavl_cust_for_each(fcb_resource, fcb, res) {
870 seq->_buffer = CORBA_sequence_fres_resource_allocbuf(n);
875 gavl_cust_for_each(fcb_resource, fcb, res) {
876 seq->_buffer[n].restype = res->key.type;
877 seq->_buffer[n].resid = res->key.id;
878 seq->_buffer[n].desc.manager = res->mng;
879 seq->_buffer[n].desc.name = res->name;
886 #ifdef CONFIG_FCB_INET
887 static int register_inet_port(forb_orb orb)
889 forb_port_t *port = forb_malloc(sizeof(*port));
891 struct in_addr listen_on;
895 memset(port, 0, sizeof(*port));
896 listen_on.s_addr = INADDR_ANY;
897 ret = forb_inet_port_init(&port->desc, listen_on);
900 ret = forb_register_port(orb, port);
905 struct forb_fres_contract_broker_impl impl = {
906 .negotiate_contracts = negotiate_contracts,
907 .register_resource = register_resource,
908 .register_allocator = register_allocator,
909 .redistribute_spare_capacity = redistribute_spare_capacity,
910 .get_resources = get_resources,
913 void peer_discovery_callback(const forb_orb peer_orb, const char *orb_id)
915 forb_server_id server_id;
916 char server_id_str[sizeof(forb_server_id)*2+1];
918 forb_get_server_id(peer_orb, &server_id);
919 forb_server_id_to_string(server_id_str, &server_id, sizeof(server_id_str));
921 ul_logmsg("peer discovered: %s (orb_id '%s')\n", server_id_str, orb_id);
927 if (strcmp(orb_id, "org.frescor.fcb") == 0) {
929 fosa_rel_time_t delay;
930 fosa_clock_get_time(CLOCK_REALTIME, &now);
931 delay = fosa_abs_time_extract_interval(start_time, now);
932 ul_logmsg("node joined: %s (time %ld ms)\n", server_id_str,
933 fosa_rel_time_to_msec(delay));
937 void peer_dead_callback(const forb_orb peer_orb, const char *orb_id)
941 int main(int argc, char *argv[])
945 fres_contract_broker fcb;
946 forb_executor_t executor;
948 forb_init_attr_t attr = {
949 .orb_id = "org.frescor.fcb",
950 .peer_discovery_callback = peer_discovery_callback,
951 .peer_dead_callback = peer_dead_callback,
955 fosa_clock_get_time(CLOCK_REALTIME, &start_time);
957 orb = forb_init(&argc, &argv, &attr);
958 if (!orb) error(1, errno, "FORB initialization failed");
960 #ifdef CONFIG_FCB_INET
961 ret = register_inet_port(orb);
962 if (ret) error(0, errno, "INET port registration failed");
965 fcb_resource_init_root_field(&fcb_data);
966 fcb_contract_init_root_field(&fcb_data);
968 fcb = forb_fres_contract_broker_new(orb, &impl, &fcb_data);
969 if (!fcb) error(1, errno, "forb_fres_contract_broker_new failed");
971 /* Prepare executor before we register the fcb reference,
972 * so that no reuqests are lost */
973 ret = forb_executor_init(&executor);
974 if (ret) error(1, errno, "forb_executor_init failed");
976 ret = forb_executor_register_object(&executor, fcb);
977 if (ret) error(1, errno, "forb_executor_register_object failed");
979 ret = forb_register_reference(fcb, fres_contract_broker_reg_name);
980 if (ret) error(1, errno, "forb_register_reference() failed");
982 ul_logmsg("Waiting for requests\n");
983 ret = forb_executor_run(&executor);
984 if (ret) error(1, errno, "forb_executor_run failed");