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"
7 #include <pcre.h> /* regular expression library */
10 extern routing_platf_t routing_platf;
12 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_rulebased, surf, "Routing part of surf");
14 /* Routing model structure */
17 s_as_t generic_routing;
18 xbt_dynar_t list_route;
19 xbt_dynar_t list_ASroute;
20 } s_AS_rulebased_t, *AS_rulebased_t;
22 typedef struct s_rule_route s_rule_route_t, *rule_route_t;
23 typedef struct s_rule_route_extended s_rule_route_extended_t,
24 *rule_route_extended_t;
27 xbt_dynar_t re_str_link; // dynar of char*
32 struct s_rule_route_extended {
33 s_rule_route_t generic_rule_route;
38 static void rule_route_free(void *e)
40 rule_route_t *elem = (rule_route_t *) (e);
42 xbt_dynar_free(&(*elem)->re_str_link);
43 pcre_free((*elem)->re_src);
44 pcre_free((*elem)->re_dst);
50 static void rule_route_extended_free(void *e)
52 rule_route_extended_t *elem = (rule_route_extended_t *) e;
54 xbt_dynar_free(&(*elem)->generic_rule_route.re_str_link);
55 pcre_free((*elem)->generic_rule_route.re_src);
56 pcre_free((*elem)->generic_rule_route.re_dst);
57 xbt_free((*elem)->re_src_gateway);
58 xbt_free((*elem)->re_dst_gateway);
63 /* Parse routing model functions */
65 static int model_rulebased_parse_PU(AS_t rc, sg_routing_edge_t elm)
67 AS_rulebased_t routing = (AS_rulebased_t) rc;
68 xbt_dynar_push(routing->generic_routing.index_network_elm,(void *)elm);
72 static int model_rulebased_parse_AS(AS_t rc, sg_routing_edge_t elm)
74 AS_rulebased_t routing = (AS_rulebased_t) rc;
75 xbt_dynar_push(routing->generic_routing.index_network_elm,(void *)elm);
79 static void model_rulebased_parse_route(AS_t rc,
80 const char *src, const char *dst,
83 AS_rulebased_t routing = (AS_rulebased_t) rc;
84 rule_route_t ruleroute = xbt_new0(s_rule_route_t, 1);
88 if(!strcmp(rc->model_desc->name,"Vivaldi")){
89 if(!xbt_dynar_is_empty(route->link_list))
90 xbt_die("You can't have link_ctn with Model Vivaldi.");
93 ruleroute->re_src = pcre_compile(src, 0, &error, &erroffset, NULL);
94 xbt_assert(ruleroute->re_src,
95 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
96 erroffset, src, error);
97 ruleroute->re_dst = pcre_compile(dst, 0, &error, &erroffset, NULL);
98 xbt_assert(ruleroute->re_src,
99 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
100 erroffset, dst, error);
102 ruleroute->re_str_link = route->link_list;
103 route->link_list = NULL; // Don't free it twice in each container
105 xbt_dynar_push(routing->list_route, &ruleroute);
108 static void model_rulebased_parse_ASroute(AS_t rc,
109 const char *src, const char *dst,
112 AS_rulebased_t routing = (AS_rulebased_t) rc;
113 rule_route_extended_t ruleroute_e = xbt_new0(s_rule_route_extended_t, 1);
117 if(!strcmp(rc->model_desc->name,"Vivaldi")){
118 if(!xbt_dynar_is_empty(route->link_list))
119 xbt_die("You can't have link_ctn with Model Vivaldi.");
122 ruleroute_e->generic_rule_route.re_src =
123 pcre_compile(src, 0, &error, &erroffset, NULL);
124 xbt_assert(ruleroute_e->generic_rule_route.re_src,
125 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
126 erroffset, src, error);
127 ruleroute_e->generic_rule_route.re_dst =
128 pcre_compile(dst, 0, &error, &erroffset, NULL);
129 xbt_assert(ruleroute_e->generic_rule_route.re_src,
130 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
131 erroffset, dst, error);
132 ruleroute_e->generic_rule_route.re_str_link =
135 // DIRTY PERL HACK AHEAD: with the rulebased routing, the {src,dst}_gateway fields
136 // store the provided name instead of the entity directly (routing_parse_E_ASroute knows)
138 // This is because the user will provide something like "^AS_(.*)$" instead of the proper name of a given entity
139 ruleroute_e->re_src_gateway = xbt_strdup((char *)route->src_gateway);
140 ruleroute_e->re_dst_gateway = xbt_strdup((char *)route->dst_gateway);
141 xbt_dynar_push(routing->list_ASroute, &ruleroute_e);
143 /* make sure that they don't get freed */
144 route->link_list = NULL;
145 route->src_gateway = route->dst_gateway = NULL;
148 static void model_rulebased_parse_bypassroute(AS_t rc,
153 xbt_die("bypass routing not supported for Route-Based model");
156 #define BUFFER_SIZE 4096 /* result buffer size */
157 #define OVECCOUNT 30 /* should be a multiple of 3 */
159 static char *remplace(char *value, const char **src_list, int src_size,
160 const char **dst_list, int dst_size)
162 char result[BUFFER_SIZE];
167 if (value[i] == '$') {
168 i++; /* skip the '$' */
169 if (value[i] < '0' || value[i] > '9')
170 xbt_die("bad string parameter, no number indication, at offset: "
171 "%d (\"%s\")", i, value);
173 /* solve the number */
174 int number = value[i++] - '0';
175 while (value[i] >= '0' && value[i] <= '9')
176 number = 10 * number + (value[i++] - '0');
178 /* solve the indication */
179 const char **param_list;
180 _XBT_GNUC_UNUSED int param_size;
181 if (value[i] == 's' && value[i + 1] == 'r' && value[i + 2] == 'c') {
182 param_list = src_list;
183 param_size = src_size;
184 } else if (value[i] == 'd' && value[i + 1] == 's'
185 && value[i + 2] == 't') {
186 param_list = dst_list;
187 param_size = dst_size;
189 xbt_die("bad string parameter, support only \"src\" and \"dst\", "
190 "at offset: %d (\"%s\")", i, value);
194 xbt_assert(number < param_size,
195 "bad string parameter, not enough length param_size, "
196 "at offset: %d (\"%s\") %d %d", i, value, param_size, number);
198 const char *param = param_list[number];
200 while (param[j] && i_res < BUFFER_SIZE)
201 result[i_res++] = param[j++];
203 result[i_res++] = value[i++]; /* next char */
205 if (i_res >= BUFFER_SIZE)
206 xbt_die("solving string \"%s\", small buffer size (%d)",
209 result[i_res++] = '\0';
210 char *res = xbt_malloc(i_res);
211 return memcpy(res, result, i_res);
214 static void rulebased_get_route_and_latency(AS_t rc,
215 sg_routing_edge_t src, sg_routing_edge_t dst,
216 route_t res,double*lat);
217 static xbt_dynar_t rulebased_get_onelink_routes(AS_t rc)
219 xbt_dynar_t ret = xbt_dynar_new (sizeof(onelink_t), xbt_free);
220 //We have already bypass cluster routes with network NS3
221 if(!strcmp(surf_network_model->name,"network NS3"))
227 sg_routing_edge_t router = NULL;
228 xbt_lib_cursor_t cursor;
229 xbt_lib_foreach(as_router_lib, cursor, k1, router)
231 if (router->rc_type == SURF_NETWORK_ELEMENT_ROUTER)
236 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
238 sg_routing_edge_t host = NULL;
239 xbt_lib_foreach(as_router_lib, cursor, k1, host){
240 route_t route = xbt_new0(s_route_t,1);
241 route->link_list = xbt_dynar_new(sizeof(sg_routing_link_t),NULL);
242 rulebased_get_route_and_latency (rc, router, host, route,NULL);
244 int number_of_links = xbt_dynar_length(route->link_list);
246 if(number_of_links == 1) {
250 if (number_of_links != 2) {
251 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
255 xbt_dynar_get_cpy (route->link_list, 1, &link_ptr);
256 onelink_t onelink = xbt_new0 (s_onelink_t, 1);
258 onelink->dst = router;
259 onelink->link_ptr = link_ptr;
260 xbt_dynar_push (ret, &onelink);
266 /* Business methods */
267 static void rulebased_get_route_and_latency(AS_t rc,
268 sg_routing_edge_t src, sg_routing_edge_t dst,
269 route_t route, double *lat)
271 XBT_DEBUG("rulebased_get_route_and_latency from '%s' to '%s'",src->name,dst->name);
274 "Invalid params for \"get_route\" function at AS \"%s\"",
278 AS_rulebased_t routing = (AS_rulebased_t) rc;
280 char* src_name = src->name;
281 char* dst_name = dst->name;
283 int are_processing_units=0;
284 xbt_dynar_t rule_list;
285 if ((src->rc_type == SURF_NETWORK_ELEMENT_HOST || src->rc_type == SURF_NETWORK_ELEMENT_ROUTER)&&
286 (dst->rc_type == SURF_NETWORK_ELEMENT_HOST || dst->rc_type == SURF_NETWORK_ELEMENT_ROUTER)){
287 are_processing_units = 1;
288 rule_list = routing->list_route;
289 } else if (src->rc_type == SURF_NETWORK_ELEMENT_AS && dst->rc_type == SURF_NETWORK_ELEMENT_AS) {
290 are_processing_units = 0;
291 rule_list = routing->list_ASroute;
293 THROWF(arg_error,0,"No route from '%s' to '%s'",src_name,dst_name);
297 int src_length = (int) strlen(src_name);
298 int dst_length = (int) strlen(dst_name);
300 rule_route_t ruleroute;
302 int ovector_src[OVECCOUNT];
303 int ovector_dst[OVECCOUNT];
304 const char **list_src = NULL;
305 const char **list_dst = NULL;
306 _XBT_GNUC_UNUSED int res;
307 xbt_dynar_foreach(rule_list, cpt, ruleroute) {
309 pcre_exec(ruleroute->re_src, NULL, src_name, src_length, 0, 0,
310 ovector_src, OVECCOUNT);
313 pcre_exec(ruleroute->re_dst, NULL, dst_name, dst_length, 0, 0,
314 ovector_dst, OVECCOUNT);
316 res = pcre_get_substring_list(src_name, ovector_src, rc_src, &list_src);
317 xbt_assert(!res, "error solving substring list for src \"%s\"", src_name);
318 res = pcre_get_substring_list(dst_name, ovector_dst, rc_dst, &list_dst);
319 xbt_assert(!res, "error solving substring list for dst \"%s\"", dst_name);
321 xbt_dynar_foreach(ruleroute->re_str_link, cpt, link_name) {
322 char *new_link_name =
323 remplace(link_name, list_src, rc_src, list_dst, rc_dst);
325 xbt_lib_get_or_null(link_lib, new_link_name, SURF_LINK_LEVEL);
327 xbt_dynar_push(route->link_list, &link);
329 *lat += surf_network_model->extension.network.get_link_latency(link);
331 THROWF(mismatch_error, 0, "Link %s not found", new_link_name);
332 xbt_free(new_link_name);
336 if (rc_src >= 0 && rc_dst >= 0)
340 if (rc_src >= 0 && rc_dst >= 0) {
341 /* matched src and dest, nothing more to do (?) */
342 } else if (!strcmp(src_name, dst_name) && are_processing_units) {
343 xbt_dynar_push(route->link_list, &(routing_platf->loopback));
345 *lat += surf_network_model->extension.network.get_link_latency(routing_platf->loopback);
347 THROWF(arg_error,0,"No route from '%s' to '%s'??",src_name,dst_name);
348 //xbt_dynar_reset(route->link_list);
351 if (!are_processing_units && !xbt_dynar_is_empty(route->link_list)) {
352 rule_route_extended_t ruleroute_extended =
353 (rule_route_extended_t) ruleroute;
354 char *gw_src_name = remplace(ruleroute_extended->re_src_gateway, list_src, rc_src,
356 route->src_gateway = sg_routing_edge_by_name_or_null(gw_src_name);
357 xbt_free(gw_src_name);
359 char *gw_dst_name = remplace(ruleroute_extended->re_dst_gateway, list_src, rc_src,
361 route->dst_gateway = sg_routing_edge_by_name_or_null(gw_dst_name);
362 xbt_free(gw_dst_name);
366 pcre_free_substring_list(list_src);
368 pcre_free_substring_list(list_dst);
371 static route_t rulebased_get_bypass_route(AS_t rc, sg_routing_edge_t src, sg_routing_edge_t dst, double *lat) {
375 static void rulebased_finalize(AS_t rc)
377 AS_rulebased_t routing =
380 xbt_dynar_free(&routing->list_route);
381 xbt_dynar_free(&routing->list_ASroute);
382 model_generic_finalize(rc);
386 /* Creation routing model functions */
387 AS_t model_rulebased_create(void) {
389 AS_rulebased_t new_component = (AS_rulebased_t)
390 model_generic_create_sized(sizeof(s_AS_rulebased_t));
392 new_component->generic_routing.parse_PU = model_rulebased_parse_PU;
393 new_component->generic_routing.parse_AS = model_rulebased_parse_AS;
394 new_component->generic_routing.parse_route = model_rulebased_parse_route;
395 new_component->generic_routing.parse_ASroute = model_rulebased_parse_ASroute;
396 new_component->generic_routing.parse_bypassroute = model_rulebased_parse_bypassroute;
397 new_component->generic_routing.get_onelink_routes = rulebased_get_onelink_routes;
398 new_component->generic_routing.get_route_and_latency = rulebased_get_route_and_latency;
399 new_component->generic_routing.get_bypass_route = rulebased_get_bypass_route;
400 new_component->generic_routing.finalize = rulebased_finalize;
401 /* initialization of internal structures */
402 new_component->list_route = xbt_dynar_new(sizeof(rule_route_t), &rule_route_free);
403 new_component->list_ASroute =
404 xbt_dynar_new(sizeof(rule_route_extended_t),
405 &rule_route_extended_free);
407 return (AS_t) new_component;