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nostrdb: Relay queries

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Add support for relay-based filtering in nostr queries.

Filters can now include a "relays" field. Optimal performance when
you include a kind as well:

{"relays":["wss://pyramid.fiatjaf.com/"], "kinds":[1]}

This corresponds to a `ndb` query like so:

$ ndb query -r wss://pyramid.fiatjaf.com/ -k 1 -l 1
using filter '{"relays":["wss://pyramid.fiatjaf.com/"],"kinds":[1],"limit":1}'
1 results in 0.094929 ms
{"id":"277dd4ed26d0b44576..}

Signed-off-by: William Casarin <jb55@jb55.com>
This commit is contained in:
William Casarin
2025-03-21 21:02:14 -07:00
committed by Daniel D’Aquino
parent af2298dcb7
commit 0f66e87faf
2 changed files with 388 additions and 79 deletions
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2
nostrdb/src/nostrdb.h
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@@ -162,6 +162,7 @@ enum ndb_filter_fieldtype {
NDB_FILTER_UNTIL = 6,
NDB_FILTER_LIMIT = 7,
NDB_FILTER_SEARCH = 8,
NDB_FILTER_RELAYS = 9,
};
#define NDB_NUM_FILTERS 7
@@ -569,6 +570,7 @@ struct ndb_filter_elements *ndb_filter_get_elements(const struct ndb_filter *, i
int ndb_filter_start_field(struct ndb_filter *, enum ndb_filter_fieldtype);
int ndb_filter_start_tag_field(struct ndb_filter *, char tag);
int ndb_filter_matches(struct ndb_filter *, struct ndb_note *);
int ndb_filter_matches_with_relay(struct ndb_filter *, struct ndb_note *, struct ndb_note_relay_iterator *iter);
int ndb_filter_clone(struct ndb_filter *dst, struct ndb_filter *src);
int ndb_filter_end(struct ndb_filter *);
void ndb_filter_end_field(struct ndb_filter *);