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Add zblock_feed_info_count_channel()

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Mina Brown
2024-11-24 21:26:19 -05:00
parent 0e01785913
commit 974aff7a09
2 changed files with 27 additions and 0 deletions
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24
feed_info.c
View File

@ -157,3 +157,27 @@ zblock_feed_info_err zblock_feed_info_update(PGconn *conn, zblock_feed_info_mini
PQclear(update_res);
return result;
}
// returns the number of feeds in a channel in count
zblock_feed_info_err zblock_feed_info_count_channel(PGconn *conn, u64snowflake channel_id, int64_t *count) {
if (!conn || !count) return ZBLOCK_FEED_INFO_INVALID_ARGS;
uint64_t channel_id_be = htobe64(channel_id);
const char *const params[] = {(char *) channel_id_be};
const int param_lengths[] = {sizeof(channel_id_be)};
const int param_formats[] = {1};
PGresult *res = PQexecParams(conn,
"SELECT COUNT(*) FROM feeds WHERE channel_id = $1::bigint",
1, NULL, params, param_lengths, param_formats, 1
);
if (PQresultStatus(res) != PGRES_TUPLES_OK) {
log_error(PQresultErrorMessage(res));
PQclear(res);
return ZBLOCK_FEED_INFO_DBERROR;
}
*count = be64toh(*(uint64_t *) PQgetvalue(res, 0, 0));
PQclear(res);
return ZBLOCK_FEED_INFO_OK;
}

3
feed_info.h
View File

@ -48,4 +48,7 @@ zblock_feed_info_err zblock_feed_info_delete(PGconn *conn, const char *url, u64s
// updates the last_pubDate field of a given feed in the database
zblock_feed_info_err zblock_feed_info_update(PGconn *conn, zblock_feed_info_minimal *feed);
// returns the number of feeds in a channel in count
zblock_feed_info_err zblock_feed_info_count_channel(PGconn *conn, u64snowflake channel_id, int64_t *count)
#endif