1 /* Copyright (c) 2009, 2010, 2011. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "surf_routing_private.h"
9 #include <pcre.h> /* regular expression library */
12 extern routing_global_t global_routing;
13 extern routing_component_t current_routing;
14 extern model_type_t current_routing_model;
15 extern xbt_dynar_t link_list;
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_rulebased, surf, "Routing part of surf");
19 /* Routing model structure */
22 s_routing_component_t generic_routing;
23 xbt_dict_t dict_processing_units;
24 xbt_dict_t dict_autonomous_systems;
25 xbt_dynar_t list_route;
26 xbt_dynar_t list_ASroute;
27 } s_routing_component_rulebased_t, *routing_component_rulebased_t;
29 typedef struct s_rule_route s_rule_route_t, *rule_route_t;
30 typedef struct s_rule_route_extended s_rule_route_extended_t,
31 *rule_route_extended_t;
34 xbt_dynar_t re_str_link; // dynar of char*
39 struct s_rule_route_extended {
40 s_rule_route_t generic_rule_route;
45 static void rule_route_free(void *e)
47 rule_route_t *elem = (rule_route_t *) (e);
49 xbt_dynar_free(&(*elem)->re_str_link);
50 pcre_free((*elem)->re_src);
51 pcre_free((*elem)->re_dst);
57 static void rule_route_extended_free(void *e)
59 rule_route_extended_t *elem = (rule_route_extended_t *) e;
61 xbt_dynar_free(&(*elem)->generic_rule_route.re_str_link);
62 pcre_free((*elem)->generic_rule_route.re_src);
63 pcre_free((*elem)->generic_rule_route.re_dst);
64 xbt_free((*elem)->re_src_gateway);
65 xbt_free((*elem)->re_dst_gateway);
70 /* Parse routing model functions */
72 static void model_rulebased_set_processing_unit(routing_component_t rc,
75 routing_component_rulebased_t routing =
76 (routing_component_rulebased_t) rc;
77 xbt_dict_set(routing->dict_processing_units, name, (void *) (-1), NULL);
80 static void model_rulebased_set_autonomous_system(routing_component_t rc,
83 routing_component_rulebased_t routing =
84 (routing_component_rulebased_t) rc;
85 xbt_dict_set(routing->dict_autonomous_systems, name, (void *) (-1),
89 static void model_rulebased_set_route(routing_component_t rc,
90 const char *src, const char *dst,
91 name_route_extended_t route)
93 routing_component_rulebased_t routing =
94 (routing_component_rulebased_t) rc;
95 rule_route_t ruleroute = xbt_new0(s_rule_route_t, 1);
99 if(!strcmp(rc->routing->name,"Vivaldi")){
100 if(xbt_dynar_length(route->generic_route.link_list) != 0)
101 xbt_die("You can't have link_ctn with Model Vivaldi.");
104 ruleroute->re_src = pcre_compile(src, 0, &error, &erroffset, NULL);
105 xbt_assert(ruleroute->re_src,
106 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
107 erroffset, src, error);
108 ruleroute->re_dst = pcre_compile(dst, 0, &error, &erroffset, NULL);
109 xbt_assert(ruleroute->re_src,
110 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
111 erroffset, dst, error);
112 ruleroute->re_str_link = route->generic_route.link_list;
113 xbt_dynar_push(routing->list_route, &ruleroute);
117 static void model_rulebased_set_ASroute(routing_component_t rc,
118 const char *src, const char *dst,
119 name_route_extended_t route)
121 routing_component_rulebased_t routing =
122 (routing_component_rulebased_t) rc;
123 rule_route_extended_t ruleroute_e = xbt_new0(s_rule_route_extended_t, 1);
127 if(!strcmp(rc->routing->name,"Vivaldi")){
128 if(xbt_dynar_length(route->generic_route.link_list) != 0)
129 xbt_die("You can't have link_ctn with Model Vivaldi.");
132 ruleroute_e->generic_rule_route.re_src =
133 pcre_compile(src, 0, &error, &erroffset, NULL);
134 xbt_assert(ruleroute_e->generic_rule_route.re_src,
135 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
136 erroffset, src, error);
137 ruleroute_e->generic_rule_route.re_dst =
138 pcre_compile(dst, 0, &error, &erroffset, NULL);
139 xbt_assert(ruleroute_e->generic_rule_route.re_src,
140 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
141 erroffset, dst, error);
142 ruleroute_e->generic_rule_route.re_str_link =
143 route->generic_route.link_list;
144 ruleroute_e->re_src_gateway = route->src_gateway;
145 ruleroute_e->re_dst_gateway = route->dst_gateway;
146 xbt_dynar_push(routing->list_ASroute, &ruleroute_e);
147 // xbt_free(route->src_gateway);
148 // xbt_free(route->dst_gateway);
152 static void model_rulebased_set_bypassroute(routing_component_t rc,
155 route_extended_t e_route)
157 xbt_die("bypass routing not supported for Route-Based model");
160 #define BUFFER_SIZE 4096 /* result buffer size */
161 #define OVECCOUNT 30 /* should be a multiple of 3 */
163 static char *remplace(char *value, const char **src_list, int src_size,
164 const char **dst_list, int dst_size)
166 char result[BUFFER_SIZE];
171 if (value[i] == '$') {
172 i++; /* skip the '$' */
173 if (value[i] < '0' || value[i] > '9')
174 xbt_die("bad string parameter, no number indication, at offset: "
175 "%d (\"%s\")", i, value);
177 /* solve the number */
178 int number = value[i++] - '0';
179 while (value[i] >= '0' && value[i] <= '9')
180 number = 10 * number + (value[i++] - '0');
182 /* solve the indication */
183 const char **param_list;
185 if (value[i] == 's' && value[i + 1] == 'r' && value[i + 2] == 'c') {
186 param_list = src_list;
187 param_size = src_size;
188 } else if (value[i] == 'd' && value[i + 1] == 's'
189 && value[i + 2] == 't') {
190 param_list = dst_list;
191 param_size = dst_size;
193 xbt_die("bad string parameter, support only \"src\" and \"dst\", "
194 "at offset: %d (\"%s\")", i, value);
198 xbt_assert(number < param_size,
199 "bad string parameter, not enough length param_size, "
200 "at offset: %d (\"%s\") %d %d", i, value, param_size, number);
202 const char *param = param_list[number];
204 while (param[j] && i_res < BUFFER_SIZE)
205 result[i_res++] = param[j++];
207 result[i_res++] = value[i++]; /* next char */
209 if (i_res >= BUFFER_SIZE)
210 xbt_die("solving string \"%s\", small buffer size (%d)",
213 result[i_res++] = '\0';
214 char *res = xbt_malloc(i_res);
215 return memcpy(res, result, i_res);
218 static route_extended_t rulebased_get_route(routing_component_t rc,
221 static xbt_dynar_t rulebased_get_onelink_routes(routing_component_t rc)
223 xbt_dynar_t ret = xbt_dynar_new (sizeof(onelink_t), xbt_free);
225 //We have already bypass cluster routes with network NS3
226 if(!strcmp(surf_network_model->name,"network NS3"))
229 routing_component_rulebased_t routing = (routing_component_rulebased_t)rc;
231 xbt_dict_cursor_t c1 = NULL;
236 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
237 if (rc->get_network_element_type(k1) == SURF_NETWORK_ELEMENT_ROUTER){
243 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
246 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
247 route_extended_t route = rulebased_get_route (rc, router, k1);
249 int number_of_links = xbt_dynar_length(route->generic_route.link_list);
251 if(number_of_links == 1) {
255 if (number_of_links != 2) {
256 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
260 xbt_dynar_get_cpy (route->generic_route.link_list, 1, &link_ptr);
261 onelink_t onelink = xbt_new0 (s_onelink_t, 1);
262 onelink->src = xbt_strdup (k1);
263 onelink->dst = xbt_strdup (router);
264 onelink->link_ptr = link_ptr;
265 xbt_dynar_push (ret, &onelink);
271 /* Business methods */
272 static route_extended_t rulebased_get_route(routing_component_t rc,
278 "Invalid params for \"get_route\" function at AS \"%s\"",
282 routing_component_rulebased_t routing =
283 (routing_component_rulebased_t) rc;
285 int are_processing_units=0;
286 xbt_dynar_t rule_list;
287 if (xbt_dict_get_or_null(routing->dict_processing_units, src)
288 && xbt_dict_get_or_null(routing->dict_processing_units, dst)) {
289 are_processing_units = 1;
290 rule_list = routing->list_route;
291 } else if (xbt_dict_get_or_null(routing->dict_autonomous_systems, src)
292 && xbt_dict_get_or_null(routing->dict_autonomous_systems,
294 are_processing_units = 0;
295 rule_list = routing->list_ASroute;
297 xbt_die("Ask for route \"from\"(%s) or \"to\"(%s) no found in "
298 "the local table", src, dst);
302 int src_length = (int) strlen(src);
303 int dst_length = (int) strlen(dst);
305 xbt_dynar_t links_list =
306 xbt_dynar_new(global_routing->size_of_link, NULL);
308 rule_route_t ruleroute;
310 int ovector_src[OVECCOUNT];
311 int ovector_dst[OVECCOUNT];
312 const char **list_src = NULL;
313 const char **list_dst = NULL;
315 xbt_dynar_foreach(rule_list, cpt, ruleroute) {
317 pcre_exec(ruleroute->re_src, NULL, src, src_length, 0, 0,
318 ovector_src, OVECCOUNT);
321 pcre_exec(ruleroute->re_dst, NULL, dst, dst_length, 0, 0,
322 ovector_dst, OVECCOUNT);
324 res = pcre_get_substring_list(src, ovector_src, rc_src, &list_src);
325 xbt_assert(!res, "error solving substring list for src \"%s\"", src);
326 res = pcre_get_substring_list(dst, ovector_dst, rc_dst, &list_dst);
327 xbt_assert(!res, "error solving substring list for src \"%s\"", dst);
329 xbt_dynar_foreach(ruleroute->re_str_link, cpt, link_name) {
330 char *new_link_name =
331 remplace(link_name, list_src, rc_src, list_dst, rc_dst);
333 xbt_lib_get_or_null(link_lib, new_link_name, SURF_LINK_LEVEL);
335 xbt_dynar_push(links_list, &link);
337 THROWF(mismatch_error, 0, "Link %s not found", new_link_name);
338 xbt_free(new_link_name);
342 if (rc_src >= 0 && rc_dst >= 0)
346 route_extended_t new_e_route = NULL;
347 if (rc_src >= 0 && rc_dst >= 0) {
348 new_e_route = xbt_new0(s_route_extended_t, 1);
349 new_e_route->generic_route.link_list = links_list;
350 } else if (!strcmp(src, dst) && are_processing_units) {
351 new_e_route = xbt_new0(s_route_extended_t, 1);
352 xbt_dynar_push(links_list, &(global_routing->loopback));
353 new_e_route->generic_route.link_list = links_list;
355 xbt_dynar_free(&link_list);
358 if (!are_processing_units && new_e_route) {
359 rule_route_extended_t ruleroute_extended =
360 (rule_route_extended_t) ruleroute;
361 new_e_route->src_gateway =
362 remplace(ruleroute_extended->re_src_gateway, list_src, rc_src,
364 new_e_route->dst_gateway =
365 remplace(ruleroute_extended->re_dst_gateway, list_src, rc_src,
370 pcre_free_substring_list(list_src);
372 pcre_free_substring_list(list_dst);
377 static route_extended_t rulebased_get_bypass_route(routing_component_t rc,
384 static void rulebased_finalize(routing_component_t rc)
386 routing_component_rulebased_t routing =
387 (routing_component_rulebased_t) rc;
389 xbt_dict_free(&routing->dict_processing_units);
390 xbt_dict_free(&routing->dict_autonomous_systems);
391 xbt_dynar_free(&routing->list_route);
392 xbt_dynar_free(&routing->list_ASroute);
393 /* Delete structure */
398 /* Creation routing model functions */
399 void *model_rulebased_create(void)
401 routing_component_rulebased_t new_component =
402 xbt_new0(s_routing_component_rulebased_t, 1);
403 new_component->generic_routing.set_processing_unit =
404 model_rulebased_set_processing_unit;
405 new_component->generic_routing.set_autonomous_system =
406 model_rulebased_set_autonomous_system;
407 new_component->generic_routing.set_route = model_rulebased_set_route;
408 new_component->generic_routing.set_ASroute = model_rulebased_set_ASroute;
409 new_component->generic_routing.set_bypassroute = model_rulebased_set_bypassroute;
410 new_component->generic_routing.get_onelink_routes = rulebased_get_onelink_routes;
411 new_component->generic_routing.get_route = rulebased_get_route;
412 new_component->generic_routing.get_latency = generic_get_link_latency;
413 new_component->generic_routing.get_bypass_route = rulebased_get_bypass_route;
414 new_component->generic_routing.finalize = rulebased_finalize;
415 new_component->generic_routing.get_network_element_type = get_network_element_type;
416 /* initialization of internal structures */
417 new_component->dict_processing_units = xbt_dict_new();
418 new_component->dict_autonomous_systems = xbt_dict_new();
419 new_component->list_route = xbt_dynar_new(sizeof(rule_route_t), &rule_route_free);
420 new_component->list_ASroute =
421 xbt_dynar_new(sizeof(rule_route_extended_t),
422 &rule_route_extended_free);
423 return new_component;
426 void model_rulebased_load(void)
428 /* use "surfxml_add_callback" to add a parse function call */
431 void model_rulebased_unload(void)
433 /* use "surfxml_del_callback" to remove a parse function call */
436 void model_rulebased_end(void)
440 #endif /* HAVE_PCRE_LIB */