Derive From for AllMessages and simplify send_msg (#1774)

polkadot/node/overseer/src/lib.rs

@@ -192,8 +192,8 @@ impl OverseerHandler {
 	}
 
 	/// Send some message to one of the `Subsystem`s.
-	pub async fn send_msg(&mut self, msg: AllMessages) -> SubsystemResult<()> {
-		self.events_tx.send(Event::MsgToSubsystem(msg)).await.map_err(Into::into)
+	pub async fn send_msg(&mut self, msg: impl Into<AllMessages>) -> SubsystemResult<()> {
+		self.events_tx.send(Event::MsgToSubsystem(msg.into())).await.map_err(Into::into)
 	}
 
 	/// Inform the `Overseer` that that some block was finalized.

polkadot/node/subsystem/Cargo.toml

@@ -7,7 +7,7 @@ description = "Subsystem traits and message definitions"
 
 [dependencies]
 async-trait = "0.1"
-derive_more = "0.99.9"
+derive_more = "0.99.11"
 futures = "0.3.5"
 futures-timer = "3.0.2"
 log = "0.4.8"

polkadot/node/subsystem/src/messages.rs

@@ -519,7 +519,7 @@ impl CollationGenerationMessage {
 }
 
 /// A message type tying together all message types that are used across Subsystems.
-#[derive(Debug)]
+#[derive(Debug, derive_more::From)]
 pub enum AllMessages {
 	/// Message for the validation subsystem.
 	CandidateValidation(CandidateValidationMessage),