Function main

devtools/topology.c:247–306

}

int main(int argc, char *argv[])
{
	struct timemono tstart, tstop;
	struct gossmap_node *n, *dst;
	struct gossmap *map;
	struct node_id dstid;
	bool no_singles = false;

	setup_locale();
	setup_tmpctx();

	opt_register_noarg("--no-single-sources", opt_set_bool, &no_singles,
			   "Eliminate single-channel nodes");
	opt_register_noarg("-h|--help", opt_usage_and_exit,
			   "<gossipstore> <srcid>|all <dstid>\n"
			   "A topology test program.",
			   "Get usage information");
	opt_parse(&argc, argv, opt_log_stderr_exit);
	if (argc != 4)
		opt_usage_exit_fail("Expect 3 arguments");

	tstart = time_mono();
	map = gossmap_load(NULL, argv[1], NULL);
	if (!map)
		err(1, "Loading gossip store %s", argv[1]);
	tstop = time_mono();

	printf("# Time to load: %"PRIu64" msec\n",
	       time_to_msec(timemono_between(tstop, tstart)));

	clean_topo(map, no_singles);
	printf("# Reduced to %zu nodes and %zu channels\n",
	       gossmap_num_nodes(map), gossmap_num_chans(map));

	if (!node_id_from_hexstr(argv[3], strlen(argv[3]), &dstid))
		errx(1, "Bad dstid");
	dst = gossmap_find_node(map, &dstid);
	if (!dst)
		errx(1, "Unknown destination node '%s'", argv[3]);

	if (streq(argv[2], "all")) {
		for (n = gossmap_first_node(map);
		     n;
		     n = gossmap_next_node(map, n)) {
			measure_least_cost(map, n, dst);
			clean_tmpctx();
		}
	} else {
		struct node_id srcid;
		if (!node_id_from_hexstr(argv[2], strlen(argv[2]), &srcid))
			errx(1, "Bad srcid");
		n = gossmap_find_node(map, &srcid);
		if (!n)
			errx(1, "Unknown source node '%s'", argv[2]);
		if (!measure_least_cost(map, n, dst))
			exit(1);
	}