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#include <uwsgi.h>
#include "cr.h"
extern struct uwsgi_server uwsgi;
int uwsgi_cr_map_use_void(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
return 0;
}
int uwsgi_cr_map_use_cache(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
uint64_t hits = 0;
uwsgi_rlock(ucr->cache->lock);
char *value = uwsgi_cache_get4(ucr->cache, peer->key, peer->key_len, &peer->instance_address_len, &hits);
if (!value)
goto end;
peer->tmp_socket_name = uwsgi_concat2n(value, peer->instance_address_len, "", 0);
size_t nodes = uwsgi_str_occurence(peer->tmp_socket_name, peer->instance_address_len, '|');
if (nodes > 0) {
size_t choosen_node = hits % (nodes + 1);
size_t choosen_node_len = 0;
peer->instance_address = uwsgi_str_split_nget(peer->tmp_socket_name, peer->instance_address_len, '|', choosen_node, &choosen_node_len);
if (!peer->instance_address)
goto end;
peer->instance_address_len = choosen_node_len;
}
else {
peer->instance_address = peer->tmp_socket_name;
}
char *cs_mod = uwsgi_str_contains(peer->instance_address, peer->instance_address_len, ',');
if (cs_mod) {
peer->modifier1 = uwsgi_str_num(cs_mod + 1, (peer->instance_address_len - (cs_mod - peer->instance_address)) - 1);
peer->instance_address_len = (cs_mod - peer->instance_address);
}
end:
uwsgi_rwunlock(ucr->cache->lock);
return 0;
}
int uwsgi_cr_map_use_pattern(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
size_t tmp_socket_name_len = 0;
ucr->magic_table['s'] = uwsgi_concat2n(peer->key, peer->key_len, "", 0);
peer->tmp_socket_name = magic_sub(ucr->pattern, ucr->pattern_len, &tmp_socket_name_len, ucr->magic_table);
free(ucr->magic_table['s']);
peer->instance_address_len = tmp_socket_name_len;
peer->instance_address = peer->tmp_socket_name;
return 0;
}
int uwsgi_cr_map_use_subscription(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
peer->un = uwsgi_get_subscribe_node(ucr->subscriptions, peer->key, peer->key_len);
if((peer->un == NULL) && (ucr->fallback_key != NULL)) {
peer->un = uwsgi_get_subscribe_node(ucr->subscriptions, ucr->fallback_key, ucr->fallback_key_len);
}
if (peer->un && peer->un->len) {
peer->instance_address = peer->un->name;
peer->instance_address_len = peer->un->len;
peer->modifier1 = peer->un->modifier1;
peer->modifier2 = peer->un->modifier2;
}
else if (ucr->cheap && !ucr->i_am_cheap && uwsgi_no_subscriptions(ucr->subscriptions)) {
uwsgi_gateway_go_cheap(ucr->name, ucr->queue, &ucr->i_am_cheap);
}
return 0;
}
int uwsgi_cr_map_use_subscription_dotsplit(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
char *name = peer->key;
uint16_t name_len = peer->key_len;
// max 5 split, reduce DOS attempts
int count = 5;
split:
if (!count)
return 0;
#ifdef UWSGI_DEBUG
uwsgi_log("trying with %.*s\n", name_len, name);
#endif
peer->un = uwsgi_get_subscribe_node(ucr->subscriptions, name, name_len);
if (!peer->un) {
char *next = memchr(name + 1, '.', name_len - 1);
if (next) {
name_len -= next - name;
name = next;
count--;
goto split;
}
}
if (peer->un && peer->un->len) {
peer->instance_address = peer->un->name;
peer->instance_address_len = peer->un->len;
peer->modifier1 = peer->un->modifier1;
peer->modifier2 = peer->un->modifier2;
}
else if (ucr->cheap && !ucr->i_am_cheap && uwsgi_no_subscriptions(ucr->subscriptions)) {
uwsgi_gateway_go_cheap(ucr->name, ucr->queue, &ucr->i_am_cheap);
}
return 0;
}
int uwsgi_cr_map_use_base(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
int tmp_socket_name_len = 0;
peer->tmp_socket_name = uwsgi_concat2nn(ucr->base, ucr->base_len, peer->key, peer->key_len, &tmp_socket_name_len);
peer->instance_address_len = tmp_socket_name_len;
peer->instance_address = peer->tmp_socket_name;
return 0;
}
int uwsgi_cr_map_use_cs(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
if (uwsgi.p[ucr->code_string_modifier1]->code_string) {
char *name = uwsgi_concat2("uwsgi_", ucr->short_name);
peer->instance_address = uwsgi.p[ucr->code_string_modifier1]->code_string(name, ucr->code_string_code, ucr->code_string_function, peer->key, peer->key_len);
free(name);
if (peer->instance_address) {
peer->instance_address_len = strlen(peer->instance_address);
char *cs_mod = uwsgi_str_contains(peer->instance_address, peer->instance_address_len, ',');
if (cs_mod) {
peer->modifier1 = uwsgi_str_num(cs_mod + 1, (peer->instance_address_len - (cs_mod - peer->instance_address)) - 1);
peer->instance_address_len = (cs_mod - peer->instance_address);
}
}
}
return 0;
}
int uwsgi_cr_map_use_to(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
peer->instance_address = ucr->to_socket->name;
peer->instance_address_len = ucr->to_socket->name_len;
return 0;
}
int uwsgi_cr_map_use_static_nodes(struct uwsgi_corerouter *ucr, struct corerouter_peer *peer) {
if (!ucr->current_static_node) {
ucr->current_static_node = ucr->static_nodes;
}
peer->static_node = ucr->current_static_node;
// is it a dead node ?
if (peer->static_node->custom > 0) {
// gracetime passed ?
if (peer->static_node->custom + ucr->static_node_gracetime <= (uint64_t) uwsgi_now()) {
peer->static_node->custom = 0;
}
else {
struct uwsgi_string_list *tmp_node = peer->static_node;
struct uwsgi_string_list *next_node = peer->static_node->next;
peer->static_node = NULL;
// needed for 1-node only setups
if (!next_node)
next_node = ucr->static_nodes;
while (tmp_node != next_node) {
if (!next_node) {
next_node = ucr->static_nodes;
}
if (tmp_node == next_node)
break;
if (next_node->custom == 0) {
peer->static_node = next_node;
break;
}
next_node = next_node->next;
}
}
}
if (peer->static_node) {
peer->instance_address = peer->static_node->value;
peer->instance_address_len = peer->static_node->len;
// set the next one
ucr->current_static_node = peer->static_node->next;
}
else {
// set the next one
ucr->current_static_node = ucr->current_static_node->next;
}
return 0;
}
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