router support

libs/traits/src/liquidity_pools.rs

@@ -39,6 +39,7 @@ pub trait LPEncoding: Sized {
 }
 
 /// The trait required for sending outbound messages.
+/// TODO: remove this
 pub trait Router {
 	/// The sender type of the outbound message.
 	type Sender;
@@ -50,6 +51,11 @@ pub trait Router {
 	fn send(&self, sender: Self::Sender, message: Vec<u8>) -> DispatchResultWithPostInfo;
 }
 
+pub trait RouterSupport<Domain>: Sized {
+	/// Returns a list of routers supported for the given domain.
+	fn for_domain(domain: Domain) -> Vec<Self>;
+}
+
 /// The behavior of an entity that can send messages
 pub trait MessageSender {
 	/// The middleware by where this message is sent

runtime/common/src/routing.rs

@@ -1,4 +1,4 @@
-use cfg_traits::liquidity_pools::{MessageReceiver, MessageSender};
+use cfg_traits::liquidity_pools::{MessageReceiver, MessageSender, RouterSupport};
 use cfg_types::domain_address::{Domain, DomainAddress};
 use frame_support::{
 	dispatch::{DispatchResult, DispatchResultWithPostInfo},
@@ -11,7 +11,7 @@ use sp_std::marker::PhantomData;
 /// RouterId is more specific than Domain, because RouterId also identify by
 /// where the message is sent/received
 pub enum RouterId {
-	/// The message must be sent/received by EVM using axelar
+	/// The message must be sent/received by EVM using Axelar
 	Axelar(AxelarId),
 }
 
@@ -23,6 +23,15 @@ impl From<RouterId> for Domain {
 	}
 }
 
+impl RouterSupport<Domain> for RouterId {
+	fn for_domain(domain: Domain) -> Vec<Self> {
+		match domain {
+			Domain::EVM(chain_id) => vec![RouterId::Axelar(AxelarId::Evm(chain_id))],
+			Domain::Centrifuge => vec![],
+		}
+	}
+}
+
 /// This type choose the correct router implementation given a router id
 struct RouterDispatcher<Routers>(PhantomData<Routers>);