/// given path is variable, keeping the length of any path to less than 20 should currently
/// ensure it is viable.
pub paths: Vec<Vec<RouteHop>>,
- /// The `payee` parameter passed to [`get_route`].
+ /// The `payee` parameter passed to [`find_route`].
/// This is used by `ChannelManager` to track information which may be required for retries,
/// provided back to you via [`Event::PaymentPathFailed`].
///
/// Returns the total amount of fees paid on this [`Route`].
///
/// This doesn't include any extra payment made to the recipient, which can happen in excess of
- /// the amount passed to [`get_route`]'s `final_value_msat`.
+ /// the amount passed to [`find_route`]'s `params.final_value_msat`.
pub fn get_total_fees(&self) -> u64 {
// Do not count last hop of each path since that's the full value of the payment
return self.paths.iter()
}
}
-/// Parameters needed to re-compute a [`Route`] for retrying a failed payment path.
+/// Parameters needed to find a [`Route`] for paying a [`Payee`].
///
-/// Provided in [`Event::PaymentPathFailed`] and passed to [`get_retry_route`].
+/// Passed to [`find_route`] and also provided in [`Event::PaymentPathFailed`] for retrying a failed
+/// payment path.
///
/// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
#[derive(Clone, Debug)]
-pub struct PaymentPathRetry {
+pub struct RouteParameters {
/// The recipient of the failed payment path.
pub payee: Payee,
pub final_cltv_expiry_delta: u32,
}
-impl_writeable_tlv_based!(PaymentPathRetry, {
+impl_writeable_tlv_based!(RouteParameters, {
(0, payee, required),
(2, final_value_msat, required),
(4, final_cltv_expiry_delta, required),
}
}
-/// Gets a keysend route from us (payer) to the given target node (payee). This is needed because
-/// keysend payments do not have an invoice from which to pull the payee's supported features, which
-/// makes it tricky to otherwise supply the `payee` parameter of `get_route`.
-pub fn get_keysend_route<L: Deref, S: routing::Score>(
- our_node_pubkey: &PublicKey, network: &NetworkGraph, payee: &PublicKey,
- first_hops: Option<&[&ChannelDetails]>, last_hops: &[&RouteHint], final_value_msat: u64,
- final_cltv_expiry_delta: u32, logger: L, scorer: &S
-) -> Result<Route, LightningError>
-where L::Target: Logger {
- let route_hints = last_hops.iter().map(|hint| (*hint).clone()).collect();
- let payee = Payee::for_keysend(*payee).with_route_hints(route_hints);
- get_route(
- our_node_pubkey, &payee, network, first_hops, final_value_msat, final_cltv_expiry_delta,
- logger, scorer
- )
-}
-
-/// Gets a route suitable for retrying a failed payment path.
+/// Finds a route from us (payer) to the given target node (payee).
+///
+/// If the payee provided features in their invoice, they should be provided via `params.payee`.
+/// Without this, MPP will only be used if the payee's features are available in the network graph.
+///
+/// Private routing paths between a public node and the target may be included in `params.payee`.
+///
+/// If some channels aren't announced, it may be useful to fill in `first_hops` with the results
+/// from [`ChannelManager::list_usable_channels`]. If it is filled in, the view of our local
+/// channels from [`NetworkGraph`] will be ignored, and only those in `first_hops` will be used.
///
-/// Used to re-compute a [`Route`] when handling a [`Event::PaymentPathFailed`]. Any adjustments to
-/// the [`NetworkGraph`] and channel scores should be made prior to calling this function.
+/// The fees on channels from us to the next hop are ignored as they are assumed to all be equal.
+/// However, the enabled/disabled bit on such channels as well as the `htlc_minimum_msat` /
+/// `htlc_maximum_msat` *are* checked as they may change based on the receiving node.
///
+/// # Note
+///
+/// May be used to re-compute a [`Route`] when handling a [`Event::PaymentPathFailed`]. Any
+/// adjustments to the [`NetworkGraph`] and channel scores should be made prior to calling this
+/// function.
+///
+/// # Panics
+///
+/// Panics if first_hops contains channels without short_channel_ids;
+/// [`ChannelManager::list_usable_channels`] will never include such channels.
+///
+/// [`ChannelManager::list_usable_channels`]: crate::ln::channelmanager::ChannelManager::list_usable_channels
/// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed
-pub fn get_retry_route<L: Deref, S: routing::Score>(
- our_node_pubkey: &PublicKey, retry: &PaymentPathRetry, network: &NetworkGraph,
+pub fn find_route<L: Deref, S: routing::Score>(
+ our_node_pubkey: &PublicKey, params: &RouteParameters, network: &NetworkGraph,
first_hops: Option<&[&ChannelDetails]>, logger: L, scorer: &S
) -> Result<Route, LightningError>
where L::Target: Logger {
get_route(
- our_node_pubkey, &retry.payee, network, first_hops, retry.final_value_msat,
- retry.final_cltv_expiry_delta, logger, scorer
+ our_node_pubkey, ¶ms.payee, network, first_hops, params.final_value_msat,
+ params.final_cltv_expiry_delta, logger, scorer
)
}
-/// Gets a route from us (payer) to the given target node (payee).
-///
-/// If the payee provided features in their invoice, they should be provided via `payee`. Without
-/// this, MPP will only be used if the payee's features are available in the network graph.
-///
-/// Private routing paths between a public node and the target may be included in `payee`.
-///
-/// If some channels aren't announced, it may be useful to fill in a first_hops with the
-/// results from a local ChannelManager::list_usable_channels() call. If it is filled in, our
-/// view of our local channels (from net_graph_msg_handler) will be ignored, and only those
-/// in first_hops will be used.
-///
-/// Panics if first_hops contains channels without short_channel_ids
-/// (ChannelManager::list_usable_channels will never include such channels).
-///
-/// The fees on channels from us to next-hops are ignored (as they are assumed to all be
-/// equal), however the enabled/disabled bit on such channels as well as the
-/// htlc_minimum_msat/htlc_maximum_msat *are* checked as they may change based on the receiving node.
-pub fn get_route<L: Deref, S: routing::Score>(
+pub(crate) fn get_route<L: Deref, S: routing::Score>(
our_node_pubkey: &PublicKey, payee: &Payee, network: &NetworkGraph,
first_hops: Option<&[&ChannelDetails]>, final_value_msat: u64, final_cltv_expiry_delta: u32,
logger: L, scorer: &S
projects / rust-lightning / blobdiff