Merge pull request lightningdevkit#3306 from TheBlueMatt/2024-09-chan-id-hex

Write ChannelIds out as hex in Debug output

Author: tnull

lightning-types/Cargo.toml

@@ -17,8 +17,6 @@ _test_utils = []
 
 [dependencies]
 bitcoin = { version = "0.32.2", default-features = false }
-# TODO: Once we switch to bitcoin 0.32 drop this explicit dep:
-hex-conservative = { version = "0.2", default-features = false }
 bech32 = { version = "0.9", default-features = false }
 
 [lints]

lightning-types/src/payment.rs

@@ -14,9 +14,7 @@ use alloc::vec::Vec;
 use core::borrow::Borrow;
 
 use bitcoin::hashes::{sha256::Hash as Sha256, Hash as _};
-
-// TODO: Once we switch to rust-bitcoin 0.32, import this as bitcoin::hex
-use hex_conservative::display::impl_fmt_traits;
+use bitcoin::hex::display::impl_fmt_traits;
 
 /// The payment hash is the hash of the [`PaymentPreimage`] which is the value used to lock funds
 /// in HTLCs while they transit the lightning network.

lightning/src/ln/channelmanager.rs

@@ -7135,7 +7135,7 @@ where
 				chan
 			} else {
 				let update_actions = peer_state.monitor_update_blocked_actions
-					.remove(&channel_id).unwrap_or(Vec::new());
+					.remove(channel_id).unwrap_or(Vec::new());
 				mem::drop(peer_state_lock);
 				mem::drop(per_peer_state);
 				self.handle_monitor_update_completion_actions(update_actions);

lightning/src/ln/types.rs

@@ -30,7 +30,8 @@ use bitcoin::hashes::{
 	HashEngine as _,
 	sha256::Hash as Sha256,
 };
-use core::fmt;
+use bitcoin::hex::display::impl_fmt_traits;
+use core::borrow::Borrow;
 use core::ops::Deref;
 
 /// A unique 32-byte identifier for a channel.
@@ -41,7 +42,7 @@ use core::ops::Deref;
 /// A _temporary_ ID is generated randomly.
 /// (Later revocation-point-based _v2_ is a possibility.)
 /// The variety (context) is not stored, it is relevant only at creation.
-#[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
+#[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd)]
 pub struct ChannelId(pub [u8; 32]);
 
 impl ChannelId {
@@ -121,9 +122,15 @@ impl Readable for ChannelId {
 	}
 }
 
-impl fmt::Display for ChannelId {
-	fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-		crate::util::logger::DebugBytes(&self.0).fmt(f)
+impl Borrow<[u8]> for ChannelId {
+	fn borrow(&self) -> &[u8] {
+		&self.0[..]
+	}
+}
+
+impl_fmt_traits! {
+	impl fmt_traits for ChannelId {
+		const LENGTH: usize = 32;
 	}
 }