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_global_t global_routing;
11 extern xbt_dynar_t parsed_link_list;
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_route_rulebased, surf, "Routing part of surf");
15 /* Routing model structure */
18 s_as_t generic_routing;
19 xbt_dict_t dict_processing_units;
20 xbt_dict_t dict_autonomous_systems;
21 xbt_dynar_t list_route;
22 xbt_dynar_t list_ASroute;
23 } s_AS_rulebased_t, *AS_rulebased_t;
25 typedef struct s_rule_route s_rule_route_t, *rule_route_t;
26 typedef struct s_rule_route_extended s_rule_route_extended_t,
27 *rule_route_extended_t;
30 xbt_dynar_t re_str_link; // dynar of char*
35 struct s_rule_route_extended {
36 s_rule_route_t generic_rule_route;
41 static void rule_route_free(void *e)
43 rule_route_t *elem = (rule_route_t *) (e);
45 xbt_dynar_free(&(*elem)->re_str_link);
46 pcre_free((*elem)->re_src);
47 pcre_free((*elem)->re_dst);
53 static void rule_route_extended_free(void *e)
55 rule_route_extended_t *elem = (rule_route_extended_t *) e;
57 xbt_dynar_free(&(*elem)->generic_rule_route.re_str_link);
58 pcre_free((*elem)->generic_rule_route.re_src);
59 pcre_free((*elem)->generic_rule_route.re_dst);
60 xbt_free((*elem)->re_src_gateway);
61 xbt_free((*elem)->re_dst_gateway);
66 /* Parse routing model functions */
68 static void model_rulebased_parse_PU(AS_t rc, const char *name)
70 AS_rulebased_t routing = (AS_rulebased_t) rc;
71 xbt_dict_set(routing->dict_processing_units, name, (void *) (-1), NULL);
74 static void model_rulebased_parse_AS(AS_t rc, const char *name)
76 AS_rulebased_t routing = (AS_rulebased_t) rc;
77 xbt_dict_set(routing->dict_autonomous_systems, name, (void *) (-1),
81 static void model_rulebased_parse_route(AS_t rc,
82 const char *src, const char *dst,
85 AS_rulebased_t routing = (AS_rulebased_t) rc;
86 rule_route_t ruleroute = xbt_new0(s_rule_route_t, 1);
90 if(!strcmp(rc->model_desc->name,"Vivaldi")){
91 if(!xbt_dynar_is_empty(route->link_list))
92 xbt_die("You can't have link_ctn with Model Vivaldi.");
95 ruleroute->re_src = pcre_compile(src, 0, &error, &erroffset, NULL);
96 xbt_assert(ruleroute->re_src,
97 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
98 erroffset, src, error);
99 ruleroute->re_dst = pcre_compile(dst, 0, &error, &erroffset, NULL);
100 xbt_assert(ruleroute->re_src,
101 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
102 erroffset, dst, error);
104 ruleroute->re_str_link = route->link_list;
105 route->link_list = NULL; // Don't free it twice in each container
107 xbt_dynar_push(routing->list_route, &ruleroute);
110 static void model_rulebased_parse_ASroute(AS_t rc,
111 const char *src, const char *dst,
114 AS_rulebased_t routing = (AS_rulebased_t) rc;
115 rule_route_extended_t ruleroute_e = xbt_new0(s_rule_route_extended_t, 1);
119 if(!strcmp(rc->model_desc->name,"Vivaldi")){
120 if(!xbt_dynar_is_empty(route->link_list))
121 xbt_die("You can't have link_ctn with Model Vivaldi.");
124 ruleroute_e->generic_rule_route.re_src =
125 pcre_compile(src, 0, &error, &erroffset, NULL);
126 xbt_assert(ruleroute_e->generic_rule_route.re_src,
127 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
128 erroffset, src, error);
129 ruleroute_e->generic_rule_route.re_dst =
130 pcre_compile(dst, 0, &error, &erroffset, NULL);
131 xbt_assert(ruleroute_e->generic_rule_route.re_src,
132 "PCRE compilation failed at offset %d (\"%s\"): %s\n",
133 erroffset, dst, error);
134 ruleroute_e->generic_rule_route.re_str_link =
136 ruleroute_e->re_src_gateway = route->src_gateway;
137 ruleroute_e->re_dst_gateway = route->dst_gateway;
138 xbt_dynar_push(routing->list_ASroute, &ruleroute_e);
140 /* make sure that they don't get freed */
141 route->link_list = NULL;
142 route->src_gateway = route->dst_gateway = NULL;
145 static void model_rulebased_parse_bypassroute(AS_t rc,
150 xbt_die("bypass routing not supported for Route-Based model");
153 #define BUFFER_SIZE 4096 /* result buffer size */
154 #define OVECCOUNT 30 /* should be a multiple of 3 */
156 static char *remplace(char *value, const char **src_list, int src_size,
157 const char **dst_list, int dst_size)
159 char result[BUFFER_SIZE];
164 if (value[i] == '$') {
165 i++; /* skip the '$' */
166 if (value[i] < '0' || value[i] > '9')
167 xbt_die("bad string parameter, no number indication, at offset: "
168 "%d (\"%s\")", i, value);
170 /* solve the number */
171 int number = value[i++] - '0';
172 while (value[i] >= '0' && value[i] <= '9')
173 number = 10 * number + (value[i++] - '0');
175 /* solve the indication */
176 const char **param_list;
177 _XBT_GNUC_UNUSED int param_size;
178 if (value[i] == 's' && value[i + 1] == 'r' && value[i + 2] == 'c') {
179 param_list = src_list;
180 param_size = src_size;
181 } else if (value[i] == 'd' && value[i + 1] == 's'
182 && value[i + 2] == 't') {
183 param_list = dst_list;
184 param_size = dst_size;
186 xbt_die("bad string parameter, support only \"src\" and \"dst\", "
187 "at offset: %d (\"%s\")", i, value);
191 xbt_assert(number < param_size,
192 "bad string parameter, not enough length param_size, "
193 "at offset: %d (\"%s\") %d %d", i, value, param_size, number);
195 const char *param = param_list[number];
197 while (param[j] && i_res < BUFFER_SIZE)
198 result[i_res++] = param[j++];
200 result[i_res++] = value[i++]; /* next char */
202 if (i_res >= BUFFER_SIZE)
203 xbt_die("solving string \"%s\", small buffer size (%d)",
206 result[i_res++] = '\0';
207 char *res = xbt_malloc(i_res);
208 return memcpy(res, result, i_res);
211 static void rulebased_get_route_and_latency(AS_t rc,
212 const char *src, const char *dst,
213 route_t res,double*lat);
214 static xbt_dynar_t rulebased_get_onelink_routes(AS_t rc)
216 xbt_dynar_t ret = xbt_dynar_new (sizeof(onelink_t), xbt_free);
218 //We have already bypass cluster routes with network NS3
219 if(!strcmp(surf_network_model->name,"network NS3"))
222 AS_rulebased_t routing = (AS_rulebased_t)rc;
224 xbt_dict_cursor_t c1 = NULL;
229 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
230 if (routing_get_network_element_type(k1) == SURF_NETWORK_ELEMENT_ROUTER){
237 xbt_die ("rulebased_get_onelink_routes works only if the AS is a cluster, sorry.");
239 xbt_dict_foreach(routing->dict_processing_units, c1, k1, d1) {
240 route_t route = xbt_new0(s_route_t,1);
241 route->link_list = xbt_dynar_new(global_routing->size_of_link,NULL);
242 rulebased_get_route_and_latency (rc, router, k1, 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);
257 onelink->src = xbt_strdup (k1);
258 onelink->dst = xbt_strdup (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 const char *src, const char *dst,
269 route_t route, double *lat)
273 "Invalid params for \"get_route\" function at AS \"%s\"",
277 AS_rulebased_t routing = (AS_rulebased_t) rc;
279 int are_processing_units=0;
280 xbt_dynar_t rule_list;
281 if (xbt_dict_get_or_null(routing->dict_processing_units, src)
282 && xbt_dict_get_or_null(routing->dict_processing_units, dst)) {
283 are_processing_units = 1;
284 rule_list = routing->list_route;
285 } else if (xbt_dict_get_or_null(routing->dict_autonomous_systems, src)
286 && xbt_dict_get_or_null(routing->dict_autonomous_systems,
288 are_processing_units = 0;
289 rule_list = routing->list_ASroute;
291 THROWF(arg_error,0,"No route from '%s' to '%s'",src,dst);
295 int src_length = (int) strlen(src);
296 int dst_length = (int) strlen(dst);
298 rule_route_t ruleroute;
300 int ovector_src[OVECCOUNT];
301 int ovector_dst[OVECCOUNT];
302 const char **list_src = NULL;
303 const char **list_dst = NULL;
304 _XBT_GNUC_UNUSED int res;
305 xbt_dynar_foreach(rule_list, cpt, ruleroute) {
307 pcre_exec(ruleroute->re_src, NULL, src, src_length, 0, 0,
308 ovector_src, OVECCOUNT);
311 pcre_exec(ruleroute->re_dst, NULL, dst, dst_length, 0, 0,
312 ovector_dst, OVECCOUNT);
314 res = pcre_get_substring_list(src, ovector_src, rc_src, &list_src);
315 xbt_assert(!res, "error solving substring list for src \"%s\"", src);
316 res = pcre_get_substring_list(dst, ovector_dst, rc_dst, &list_dst);
317 xbt_assert(!res, "error solving substring list for src \"%s\"", dst);
319 xbt_dynar_foreach(ruleroute->re_str_link, cpt, link_name) {
320 char *new_link_name =
321 remplace(link_name, list_src, rc_src, list_dst, rc_dst);
323 xbt_lib_get_or_null(link_lib, new_link_name, SURF_LINK_LEVEL);
325 xbt_dynar_push(route->link_list, &link);
327 *lat += surf_network_model->extension.network.get_link_latency(link);
329 THROWF(mismatch_error, 0, "Link %s not found", new_link_name);
330 xbt_free(new_link_name);
334 if (rc_src >= 0 && rc_dst >= 0)
338 if (rc_src >= 0 && rc_dst >= 0) {
339 /* matched src and dest, nothing more to do (?) */
340 } else if (!strcmp(src, dst) && are_processing_units) {
341 xbt_dynar_push(route->link_list, &(global_routing->loopback));
343 *lat += surf_network_model->extension.network.get_link_latency(link);
345 THROWF(arg_error,0,"No route from '%s' to '%s'??",src,dst);
346 //xbt_dynar_reset(route->link_list);
349 if (!are_processing_units && !xbt_dynar_is_empty(route->link_list)) {
350 rule_route_extended_t ruleroute_extended =
351 (rule_route_extended_t) ruleroute;
353 remplace(ruleroute_extended->re_src_gateway, list_src, rc_src,
356 remplace(ruleroute_extended->re_dst_gateway, list_src, rc_src,
361 pcre_free_substring_list(list_src);
363 pcre_free_substring_list(list_dst);
366 static route_t rulebased_get_bypass_route(AS_t rc, const char *src, const char *dst) {
370 static void rulebased_finalize(AS_t rc)
372 AS_rulebased_t routing =
375 xbt_dict_free(&routing->dict_processing_units);
376 xbt_dict_free(&routing->dict_autonomous_systems);
377 xbt_dynar_free(&routing->list_route);
378 xbt_dynar_free(&routing->list_ASroute);
380 model_generic_finalize(rc);
384 /* Creation routing model functions */
385 AS_t model_rulebased_create(void) {
387 AS_rulebased_t new_component = (AS_rulebased_t)
388 model_generic_create_sized(sizeof(s_AS_rulebased_t));
390 new_component->generic_routing.parse_PU = model_rulebased_parse_PU;
391 new_component->generic_routing.parse_AS = model_rulebased_parse_AS;
392 new_component->generic_routing.parse_route = model_rulebased_parse_route;
393 new_component->generic_routing.parse_ASroute = model_rulebased_parse_ASroute;
394 new_component->generic_routing.parse_bypassroute = model_rulebased_parse_bypassroute;
395 new_component->generic_routing.get_onelink_routes = rulebased_get_onelink_routes;
396 new_component->generic_routing.get_route_and_latency = rulebased_get_route_and_latency;
397 new_component->generic_routing.get_bypass_route = rulebased_get_bypass_route;
398 new_component->generic_routing.finalize = rulebased_finalize;
399 /* initialization of internal structures */
400 new_component->dict_processing_units = xbt_dict_new();
401 new_component->dict_autonomous_systems = xbt_dict_new();
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;