Function fillin_missing_channel_id

wallet/db.c:1155–1190

* V2 channel open has a different channel_id format than v1. prior to this, we * could simply derive the channel_id whenever it was required, but since there * are now two ways to do it, we save the derived channel id. */

 * are now two ways to do it, we save the derived channel id.
 */
static void fillin_missing_channel_id(struct lightningd *ld, struct db *db,
				      const struct migration_context *mc)
{

	struct db_stmt *stmt;

	stmt = db_prepare_v2(db, SQL("SELECT"
				     " id"
				     ", funding_tx_id"
				     ", funding_tx_outnum"
				     " FROM channels;"));

	db_query_prepared(stmt);
	while (db_step(stmt)) {
		struct db_stmt *update_stmt;
		size_t id;
		struct bitcoin_outpoint funding;
		struct channel_id cid;

		id = db_col_u64(stmt, "id");
		db_col_txid(stmt, "funding_tx_id", &funding.txid);
		funding.n = db_col_int(stmt, "funding_tx_outnum");
		derive_channel_id(&cid, &funding);

		update_stmt = db_prepare_v2(db, SQL("UPDATE channels"
						    " SET full_channel_id = ?"
						    " WHERE id = ?;"));
		db_bind_channel_id(update_stmt, 0, &cid);
		db_bind_u64(update_stmt, 1, id);

		db_exec_prepared_v2(update_stmt);
		tal_free(update_stmt);
	}

	tal_free(stmt);
}

static void fillin_missing_local_basepoints(struct lightningd *ld,
					    struct db *db,