Function json_getroute

plugins/topology.c:113–193

}

static struct command_result *json_getroute(struct command *cmd,
					    const char *buffer,
					    const jsmntok_t *params)
{
	struct node_id *destination;
	struct node_id *source;
	struct amount_msat *msat;
	u32 *cltv;
	/* risk factor 12.345% -> riskfactor_millionths = 12345000 */
	u64 *riskfactor_millionths, *fuzz_millionths;
	struct route_exclusion **excluded;
	u32 *max_hops;
	const struct dijkstra *dij;
	struct route_hop *route;
	struct gossmap_node *src, *dst;
	struct json_stream *js;
	struct gossmap *gossmap;

	if (!param(cmd, buffer, params,
		   p_req("id", param_node_id, &destination),
		   p_req("amount_msat|msatoshi", param_msat, &msat),
		   p_req("riskfactor", param_millionths, &riskfactor_millionths),
		   p_opt_def("cltv", param_number, &cltv, 9),
		   p_opt_def("fromid", param_node_id, &source, local_id),
		   p_opt_def("fuzzpercent", param_millionths, &fuzz_millionths,
			     5000000),
		   p_opt("exclude", param_route_exclusion_array, &excluded),
		   p_opt_def("maxhops", param_number, &max_hops, ROUTING_MAX_HOPS),
		   NULL))
		return command_param_failed();

	/* Convert from percentage */
	fuzz = *fuzz_millionths / 100.0 / 1000000.0;
	if (fuzz > 1.0)
		return command_fail_badparam(cmd, "fuzzpercent",
					     buffer, params,
					     "should be <= 100");

	gossmap = get_gossmap();
	src = gossmap_find_node(gossmap, source);
	if (!src)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "%s: unknown source node_id (no public channels?)",
				    type_to_string(tmpctx, struct node_id, source));

	dst = gossmap_find_node(gossmap, destination);
	if (!dst)
		return command_fail(cmd, JSONRPC2_INVALID_PARAMS,
				    "%s: unknown destination node_id (no public channels?)",
				    type_to_string(tmpctx, struct node_id, destination));

	fuzz = 0;
	dij = dijkstra(tmpctx, gossmap, dst, *msat,
		       *riskfactor_millionths / 1000000.0,
		       can_carry, route_score_fuzz, excluded);
	route = route_from_dijkstra(dij, gossmap, dij, src, *msat, *cltv);
	if (!route)
		return command_fail(cmd, PAY_ROUTE_NOT_FOUND, "Could not find a route");