Function routehint_generate_exclusion_list

plugins/libplugin-pay.c:2917–2938

routehint_generate_exclusion_list * * @brief generate a list of items to append to `excludes` * parameter of `getroute`. * * @param ctx - the context to allocate off of. * @param routehint - the actual routehint, a `tal` array. * @param payment - the payment that we will create an * exclusion list for. * * @return an array of strings that will be appended to the * `excludes` parameter o

 * `excludes` parameter of `getroute`.
 */
static
struct node_id *routehint_generate_exclusion_list(const tal_t *ctx,
						  struct route_info *routehint,
						  struct payment *payment)
{
	struct node_id *exc;

	if (!routehint || tal_count(routehint) == 0)
		/* Nothing to exclude.  */
		return NULL;

	exc = tal_arr(ctx, struct node_id, tal_count(routehint));
	/* Exclude every node except the first, because the first is
	 * the entry point to the routehint.  */
	for (size_t i = 1 /* Skip the first! */; i < tal_count(routehint); ++i)
		exc[i-1] = routehint[i].pubkey;

	/* Also exclude the destination, because it would be foolish to
	 * pass through it and *then* go to the routehint entry point.  */
	exc[tal_count(routehint)-1] = *payment->route_destination;
	return exc;
}

/* Change the destination and compute the final msatoshi amount to send to the
 * routehint entry point. */