nostrdb

commit c18aa9edc3c78ec11ba14922e6f99c3eccbedadf
parent cd9ba0ea7dfd021f2a3e98aefef87990d161aab3
Author: William Casarin <jb55@jb55.com>
Date:   Wed, 23 Oct 2024 13:13:38 -0700

add ndb_subscription_filters

Expose a way to get the set of filters for a subscription. On the rust
side, we should likely ndb_filter_clone each filter asap, because the
result of this function will only be valid up until the subscription
ends.

Signed-off-by: William Casarin <jb55@jb55.com>

Diffstat:
M
src/nostrdb.c
 | 
14
++++++++++++++
M
src/nostrdb.h
 | 
1
+

2 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/src/nostrdb.c b/src/nostrdb.c
@@ -6467,6 +6467,20 @@ int ndb_unsubscribe(struct ndb *ndb, uint64_t subid)
 	return 1;
 }
 
+struct ndb_filter *ndb_subscription_filters(struct ndb *ndb, uint64_t subid, int *filters)
+{
+	struct ndb_subscription *sub;
+
+	sub = ndb_find_subscription(ndb, subid, NULL);
+	if (sub) {
+		*filters = sub->group.num_filters;
+		return sub->group.filters;
+	}
+
+	*filters = 0;
+	return NULL;
+}
+
 int ndb_num_subscriptions(struct ndb *ndb)
 {
 	return ndb->monitor.num_subscriptions;
diff --git a/src/nostrdb.h b/src/nostrdb.h
@@ -519,6 +519,7 @@ int ndb_wait_for_notes(struct ndb *, uint64_t subid, uint64_t *note_ids, int not
 int ndb_poll_for_notes(struct ndb *, uint64_t subid, uint64_t *note_ids, int note_id_capacity);
 int ndb_unsubscribe(struct ndb *, uint64_t subid);
 int ndb_num_subscriptions(struct ndb *);
+struct ndb_filter *ndb_subscription_filters(struct ndb *, uint64_t subid, int *filters);
 
 // FULLTEXT SEARCH
 int ndb_text_search(struct ndb_txn *txn, const char *query, struct ndb_text_search_results *, struct ndb_text_search_config *);