From f561efbba58419cab7b9bf362166e4228dcb094e Mon Sep 17 00:00:00 2001
From: Dominic Leutenegger <dominic@getlipa.com>
Date: Wed, 4 Oct 2023 13:20:21 +0200
Subject: [PATCH] Expose `log_debug_info` method

---
 examples/3l-node/cli.rs  |  8 ++++++++
 src/lib.rs               | 27 ++++++++++++++++++++++++++-
 src/lipalightninglib.udl |  6 ++++++
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/examples/3l-node/cli.rs b/examples/3l-node/cli.rs
index 7c7f64e1..7a13ae10 100644
--- a/examples/3l-node/cli.rs
+++ b/examples/3l-node/cli.rs
@@ -152,6 +152,11 @@ pub(crate) fn poll_for_user_input(node: &LightningNode, log_file_path: &str) {
                         Err(e) => println!("{}", e.red()),
                     }
                 }
+                "logdebug" => {
+                    if let Err(e) = node.log_debug_info() {
+                        println!("{}", e.to_string().red());
+                    }
+                }
                 "foreground" => {
                     node.foreground();
                 }
@@ -226,6 +231,7 @@ fn setup_editor(history_path: &Path) -> Editor<CommandHinter, DefaultHistory> {
         "paymentuuid",
     ));
     hints.insert(CommandHint::new("sweep <address>", "sweep"));
+    hints.insert(CommandHint::new("logdebug", "logdebug"));
     hints.insert(CommandHint::new("foreground", "foreground"));
     hints.insert(CommandHint::new("background", "background"));
     hints.insert(CommandHint::new("stop", "stop"));
@@ -263,6 +269,8 @@ fn help() {
     println!();
     println!("  sweep <address>");
     println!();
+    println!("  logdebug");
+    println!();
     println!("  foreground");
     println!("  background");
     println!();
diff --git a/src/lib.rs b/src/lib.rs
index a551d85e..b5a9c486 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -63,7 +63,7 @@ use email_address::EmailAddress;
 use honey_badger::secrets::{generate_keypair, KeyPair};
 use honey_badger::{Auth, AuthLevel, CustomTermsAndConditions};
 use iban::Iban;
-use log::trace;
+use log::{info, trace};
 use logger::init_logger_once;
 use num_enum::TryFromPrimitive;
 use perro::Error::RuntimeError;
@@ -854,6 +854,31 @@ impl LightningNode {
             .txid
             .to_hex())
     }
+
+    pub fn log_debug_info(&self) -> Result<()> {
+        let peers = self
+            .rt
+            .handle()
+            .block_on(self.sdk.execute_dev_command("listpeers".to_string()))
+            .map_to_runtime_error(
+                RuntimeErrorCode::NodeUnavailable,
+                "Couldn't execute `listpeers` command",
+            )?;
+
+        let peer_channels = self
+            .rt
+            .handle()
+            .block_on(self.sdk.execute_dev_command("listpeerchannels".to_string()))
+            .map_to_runtime_error(
+                RuntimeErrorCode::NodeUnavailable,
+                "Couldn't execute `listpeerchannels` command",
+            )?;
+
+        info!("List of peers:\n{}", peers);
+        info!("List of peer channels:\n{}", peer_channels);
+
+        Ok(())
+    }
 }
 
 fn to_offer(topup_info: TopupInfo, current_rate: &Option<ExchangeRate>) -> OfferInfo {
diff --git a/src/lipalightninglib.udl b/src/lipalightninglib.udl
index 2614b9e5..beccdffa 100644
--- a/src/lipalightninglib.udl
+++ b/src/lipalightninglib.udl
@@ -174,6 +174,12 @@ interface LightningNode {
     // Returns the txid of the sweeping transaction.
     [Throws=LnError]
     string sweep(string address, u32 onchain_fee);
+
+    // Prints additional debug information to the logs.
+    //
+    // Throws an error in case that the necessary information can't be received.
+    [Throws=LnError]
+    void log_debug_info();
 };
 
 // An object that holds all configuration needed to start a LightningNode instance.