Define a default MessageRouter implementation

[rust-lightning] / lightning / src / onion_message / messenger.rs

diff --git a/lightning/src/onion_message/messenger.rs b/lightning/src/onion_message/messenger.rs
index 2c3cf4307349ff27bcc988806ec337952c339c9d..a3613605cdebbd1ff71014d827b70782e043a160 100644 (file)
--- a/lightning/src/onion_message/messenger.rs
+++ b/lightning/src/onion_message/messenger.rs
@@ -152,6 +152,17 @@ pub trait MessageRouter {
        ) -> Result<OnionMessagePath, ()>;
 }
 
+/// A [`MessageRouter`] that always fails.
+pub struct DefaultMessageRouter;
+
+impl MessageRouter for DefaultMessageRouter {
+       fn find_path(
+               &self, _sender: PublicKey, _peers: Vec<PublicKey>, _destination: Destination
+       ) -> Result<OnionMessagePath, ()> {
+               Err(())
+       }
+}
+
 /// A path for sending an [`msgs::OnionMessage`].
 #[derive(Clone)]
 pub struct OnionMessagePath {
@@ -598,11 +609,11 @@ where
 ///
 /// [`SimpleArcChannelManager`]: crate::ln::channelmanager::SimpleArcChannelManager
 /// [`SimpleArcPeerManager`]: crate::ln::peer_handler::SimpleArcPeerManager
-pub type SimpleArcOnionMessenger<L, R> = OnionMessenger<
+pub type SimpleArcOnionMessenger<L> = OnionMessenger<
        Arc<KeysManager>,
        Arc<KeysManager>,
        Arc<L>,
-       Arc<R>,
+       Arc<DefaultMessageRouter>,
        IgnoringMessageHandler,
        IgnoringMessageHandler
 >;
@@ -614,11 +625,11 @@ pub type SimpleArcOnionMessenger<L, R> = OnionMessenger<
 ///
 /// [`SimpleRefChannelManager`]: crate::ln::channelmanager::SimpleRefChannelManager
 /// [`SimpleRefPeerManager`]: crate::ln::peer_handler::SimpleRefPeerManager
-pub type SimpleRefOnionMessenger<'a, 'b, 'c, L, R> = OnionMessenger<
+pub type SimpleRefOnionMessenger<'a, 'b, 'c, L> = OnionMessenger<
        &'a KeysManager,
        &'a KeysManager,
        &'b L,
-       &'c R,
+       &'c DefaultMessageRouter,
        IgnoringMessageHandler,
        IgnoringMessageHandler
 >;