From c61d7de892b41eb4018083bfdabc6abb34a9399c Mon Sep 17 00:00:00 2001
From: Antoine Riard <ariard@student.42.fr>
Date: Tue, 3 Mar 2020 14:41:13 -0500
Subject: [PATCH] Add logger for SpendableOutputDescriptor

---
 lightning/src/ln/channelmonitor.rs |  4 ++++
 lightning/src/util/macro_logger.rs | 25 +++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/lightning/src/ln/channelmonitor.rs b/lightning/src/ln/channelmonitor.rs
index 8c26139c4..c2dd9c352 100644
--- a/lightning/src/ln/channelmonitor.rs
+++ b/lightning/src/ln/channelmonitor.rs
@@ -2132,6 +2132,10 @@ impl<ChanSigner: ChannelKeys> ChannelMonitor<ChanSigner> {
 			self.outputs_to_watch.insert(txid.clone(), output_scripts.iter().map(|o| o.script_pubkey.clone()).collect());
 		}
 
+		for spend in spendable_outputs.iter() {
+			log_trace!(self, "Announcing spendable output to user: {}", log_spendable!(spend));
+		}
+
 		if spendable_outputs.len() > 0 {
 			self.pending_events.push(events::Event::SpendableOutputs {
 				outputs: spendable_outputs,
diff --git a/lightning/src/util/macro_logger.rs b/lightning/src/util/macro_logger.rs
index e3a431ed5..5a7024142 100644
--- a/lightning/src/util/macro_logger.rs
+++ b/lightning/src/util/macro_logger.rs
@@ -1,4 +1,5 @@
 use chain::transaction::OutPoint;
+use chain::keysinterface::SpendableOutputDescriptor;
 
 use bitcoin_hashes::sha256d::Hash as Sha256dHash;
 use bitcoin::blockdata::transaction::Transaction;
@@ -128,6 +129,30 @@ macro_rules! log_tx {
 	}
 }
 
+pub(crate) struct DebugSpendable<'a>(pub &'a SpendableOutputDescriptor);
+impl<'a> std::fmt::Display for DebugSpendable<'a> {
+	fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
+		match self.0 {
+			&SpendableOutputDescriptor::StaticOutput { ref outpoint, .. } => {
+				write!(f, "StaticOutput {}:{} marked for spending", outpoint.txid, outpoint.vout)?;
+			}
+			&SpendableOutputDescriptor::DynamicOutputP2WSH { ref outpoint, .. } => {
+				write!(f, "DynamicOutputP2WSH {}:{} marked for spending", outpoint.txid, outpoint.vout)?;
+			}
+			&SpendableOutputDescriptor::DynamicOutputP2WPKH { ref outpoint, .. } => {
+				write!(f, "DynamicOutputP2WPKH {}:{} marked for spending", outpoint.txid, outpoint.vout)?;
+			}
+		}
+		Ok(())
+	}
+}
+
+macro_rules! log_spendable {
+	($obj: expr) => {
+		::util::macro_logger::DebugSpendable(&$obj)
+	}
+}
+
 macro_rules! log_internal {
 	($self: ident, $lvl:expr, $($arg:tt)+) => (
 		&$self.logger.log(&::util::logger::Record::new($lvl, format_args!($($arg)+), module_path!(), file!(), line!()));
-- 
2.39.5