mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-17 16:48:43 +00:00
135 lines
3.2 KiB
Plaintext
135 lines
3.2 KiB
Plaintext
/*
|
|
* BIRD -- Aggregator configuration
|
|
*
|
|
* (c) 2023 Igor Putovny <igor.putovny@nic.cz>
|
|
* (c) 2023 Maria Matejka <mq@ucw.cz>
|
|
* (c) 2023 CZ.NIC z.s.p.o.
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
CF_HDR
|
|
|
|
#include "proto/aggregator/aggregator.h"
|
|
|
|
CF_DEFINES
|
|
|
|
#define AGGREGATOR_CFG ((struct aggregator_config *) this_proto)
|
|
#define AGGR_ITEM_ALLOC ((struct aggr_item_node *) cfg_allocz(sizeof(struct aggr_item_node)))
|
|
|
|
|
|
CF_DECLS
|
|
|
|
CF_KEYWORDS(AGGREGATOR, PEER, AGGREGATE, ON, MERGE, BY)
|
|
|
|
%type <ai> aggr_item aggr_list
|
|
|
|
CF_GRAMMAR
|
|
|
|
proto: aggregator_proto ;
|
|
|
|
aggregator_proto_start: proto_start AGGREGATOR
|
|
{
|
|
this_proto = proto_config_new(&proto_aggregator, $1);
|
|
this_channel = AGGREGATOR_CFG->src = channel_config_new(NULL, "source", 0, this_proto);
|
|
AGGREGATOR_CFG->dst = channel_config_new(NULL, "destination", 0, this_proto);
|
|
|
|
AGGREGATOR_CFG->src->ra_mode = AGGREGATOR_CFG->dst->ra_mode = RA_ANY;
|
|
};
|
|
|
|
aggregator_proto_item:
|
|
proto_item
|
|
| channel_item_
|
|
| PEER TABLE rtable { AGGREGATOR_CFG->dst->table = $3; }
|
|
| AGGREGATE ON aggr_list {
|
|
if (AGGREGATOR_CFG->aggr_on)
|
|
cf_error("Only one aggregate on clause allowed");
|
|
|
|
_Bool net_present = 0;
|
|
int count = 0;
|
|
|
|
for (const struct aggr_item_node *item = $3; item; item = item->next) {
|
|
// log(L_WARN "type %d sacode %d", item->i.type, item->i.sa.sa_code);
|
|
if (item->i.type == AGGR_ITEM_STATIC_ATTR && item->i.sa.sa_code == SA_NET)
|
|
net_present = 1;
|
|
|
|
count++;
|
|
}
|
|
|
|
if (!net_present)
|
|
cf_error("'NET' must be present");
|
|
|
|
AGGREGATOR_CFG->aggr_on = cfg_alloc(sizeof(struct aggr_item) * count);
|
|
|
|
int pos = 0;
|
|
for (const struct aggr_item_node *item = $3; item; item = item->next) {
|
|
if (item->i.type == AGGR_ITEM_DYNAMIC_ATTR)
|
|
AGGREGATOR_CFG->aggr_on_da_count++;
|
|
|
|
AGGREGATOR_CFG->aggr_on[pos++] = item->i;
|
|
}
|
|
|
|
AGGREGATOR_CFG->aggr_on_count = pos;
|
|
}
|
|
| MERGE BY {
|
|
cf_push_block_scope(new_config);
|
|
cf_create_symbol(new_config, "routes", SYM_VARIABLE | T_ROUTES_BLOCK, offset, f_new_var(sym_->scope));
|
|
} function_body {
|
|
cf_pop_block_scope(new_config);
|
|
$4->args++;
|
|
AGGREGATOR_CFG->merge_by = $4;
|
|
}
|
|
;
|
|
|
|
aggregator_proto_opts: /* empty */ | aggregator_proto_opts aggregator_proto_item ';' ;
|
|
aggregator_proto: aggregator_proto_start proto_name '{' aggregator_proto_opts '}' ;
|
|
|
|
|
|
aggr_list:
|
|
aggr_item
|
|
| aggr_list ',' aggr_item {
|
|
if ($3 == NULL) {
|
|
$$ = $1;
|
|
} else {
|
|
$$ = $3;
|
|
$$->next = $1;
|
|
}
|
|
}
|
|
;
|
|
|
|
aggr_item:
|
|
'(' term ')' {
|
|
$$ = AGGR_ITEM_ALLOC;
|
|
$$->i.type = AGGR_ITEM_TERM;
|
|
$$->i.line = f_linearize($2, 1);
|
|
}
|
|
| CF_SYM_KNOWN {
|
|
switch ($1->class) {
|
|
case SYM_ATTRIBUTE:
|
|
$$ = AGGR_ITEM_ALLOC;
|
|
$$->i.type = AGGR_ITEM_DYNAMIC_ATTR;
|
|
$$->i.da = *$1->attribute;
|
|
break;
|
|
case SYM_CONSTANT_RANGE:
|
|
$$ = NULL;
|
|
break;
|
|
default:
|
|
cf_error("Can't aggregate on symbol type %s.", cf_symbol_class_name($1));
|
|
}
|
|
}
|
|
| dynamic_attr {
|
|
$$ = AGGR_ITEM_ALLOC;
|
|
$$->i.type = AGGR_ITEM_DYNAMIC_ATTR;
|
|
$$->i.da = $1;
|
|
}
|
|
| static_attr {
|
|
$$ = AGGR_ITEM_ALLOC;
|
|
$$->i.type = AGGR_ITEM_STATIC_ATTR;
|
|
$$->i.sa = $1;
|
|
}
|
|
;
|
|
|
|
CF_CODE
|
|
|
|
CF_END
|