Expose former_temporary_channel_id and pathfinding sync timestamp

e2e-tests/tests/e2e.rs

@@ -510,6 +510,8 @@ async fn test_subscribe_events_channel_state_lifecycle_pending_ready_closed() {
 	assert!(pending_a.funding_txo.is_some());
 	assert!(pending_a.reason.is_none());
 	assert_eq!(pending_a.closure_initiator, ChannelClosureInitiator::Unspecified as i32);
+	assert!(pending_a.former_temporary_channel_id.as_deref().is_some_and(|id| !id.is_empty()));
+	assert_ne!(pending_a.former_temporary_channel_id.as_deref(), Some(pending_a.channel_id.as_str()));
 
 	let pending_b = wait_for_event(&mut events_b, |e| {
 		matches!(
@@ -676,6 +678,8 @@ async fn test_subscribe_events_channel_state_lifecycle_pending_ready_force_close
 	assert!(pending_a.funding_txo.is_some());
 	assert!(pending_a.reason.is_none());
 	assert_eq!(pending_a.closure_initiator, ChannelClosureInitiator::Unspecified as i32);
+	assert!(pending_a.former_temporary_channel_id.as_deref().is_some_and(|id| !id.is_empty()));
+	assert_ne!(pending_a.former_temporary_channel_id.as_deref(), Some(pending_a.channel_id.as_str()));
 
 	let pending_b = wait_for_event(&mut events_b, |e| {
 		matches!(

ldk-server-grpc/src/api.rs

@@ -88,6 +88,13 @@ pub struct GetNodeInfoResponse {
 	/// Features advertised by this node, keyed by the signaled BOLT feature bit.
 	#[prost(btree_map = "uint32, message", tag = "14")]
 	pub features: ::prost::alloc::collections::BTreeMap<u32, super::types::Feature>,
+	/// The timestamp, in seconds since start of the UNIX epoch, when we last successfully merged
+	/// external pathfinding scores.
+	///
+	/// Will be `None` if background pathfinding score syncing isn't configured, or no scores have
+	/// been merged since the node was initialized.
+	#[prost(uint64, optional, tag = "15")]
+	pub latest_pathfinding_scores_sync_timestamp: ::core::option::Option<u64>,
 }
 /// Retrieve a new on-chain funding address.
 /// See more: <https://docs.rs/ldk-node/latest/ldk_node/payment/struct.OnchainPayment.html#method.new_address>

ldk-server-grpc/src/events.rs

@@ -143,6 +143,11 @@ pub struct ChannelStateChanged {
 	pub reason: ::core::option::Option<ChannelStateChangeReason>,
 	#[prost(enumeration = "ChannelClosureInitiator", tag = "7")]
 	pub closure_initiator: i32,
+	/// The `temporary_channel_id` this channel used to be known by during channel establishment.
+	///
+	/// Only set when `state` is `CHANNEL_STATE_PENDING`.
+	#[prost(string, optional, tag = "8")]
+	pub former_temporary_channel_id: ::core::option::Option<::prost::alloc::string::String>,
 }
 /// SpliceNegotiated indicates a channel splice has been negotiated and the funding
 /// transaction is pending confirmation on-chain.

ldk-server-grpc/src/proto/api.proto

@@ -76,6 +76,13 @@ message GetNodeInfoResponse {
 
   // Features advertised by this node, keyed by the signaled BOLT feature bit.
   map<uint32, types.Feature> features = 14;
+
+  // The timestamp, in seconds since start of the UNIX epoch, when we last successfully merged
+  // external pathfinding scores.
+  //
+  // Will be `None` if background pathfinding score syncing isn't configured, or no scores have
+  // been merged since the node was initialized.
+  optional uint64 latest_pathfinding_scores_sync_timestamp = 15;
 }
 
 // Retrieve a new on-chain funding address.

ldk-server-grpc/src/proto/events.proto

@@ -120,6 +120,10 @@ message ChannelStateChanged {
   optional string funding_txo = 5;
   optional ChannelStateChangeReason reason = 6;
   ChannelClosureInitiator closure_initiator = 7;
+  // The `temporary_channel_id` this channel used to be known by during channel establishment.
+  //
+  // Only set when `state` is `CHANNEL_STATE_PENDING`.
+  optional string former_temporary_channel_id = 8;
 }
 
 // SpliceNegotiated indicates a channel splice has been negotiated and the funding

ldk-server/src/api/get_node_info.rs

@@ -72,6 +72,8 @@ pub(crate) async fn handle_get_node_info_request(
 		node_uris,
 		network,
 		features,
+		latest_pathfinding_scores_sync_timestamp: node_status
+			.latest_pathfinding_scores_sync_timestamp,
 	};
 	Ok(response)
 }

ldk-server/src/main.rs

@@ -382,7 +382,7 @@ fn main() {
 								user_channel_id,
 								counterparty_node_id,
 								funding_txo,
-								..
+								former_temporary_channel_id,
 							} => {
 								info!(
 									"CHANNEL_PENDING: {} from counterparty {}",
@@ -398,6 +398,9 @@ fn main() {
 										funding_txo: Some(funding_txo.to_string()),
 										reason: None,
 										closure_initiator: events::ChannelClosureInitiator::Unspecified.into(),
+										former_temporary_channel_id: Some(
+											former_temporary_channel_id.0.to_lower_hex_string(),
+										),
 									}),
 									&event_sender,
 								);
@@ -430,6 +433,7 @@ fn main() {
 										funding_txo: funding_txo.map(|outpoint| outpoint.to_string()),
 										reason: None,
 										closure_initiator: events::ChannelClosureInitiator::Unspecified.into(),
+										former_temporary_channel_id: None,
 									}),
 									&event_sender,
 								);
@@ -471,6 +475,7 @@ fn main() {
 										funding_txo: None,
 										reason: reason_ref.map(closure_reason_to_proto),
 										closure_initiator: closure_initiator_from_reason(reason_ref).into(),
+										former_temporary_channel_id: None,
 									}),
 									&event_sender,
 								);