Use log facade and log4rs for logging.

Author: G8XSU

Cargo.lock

@@ -4,6 +4,8 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+log = "0.4.25"
+log4rs = "1.3.0"
 ldk-node = { git = "https://github.com/lightningdevkit/ldk-node.git", rev = "2095d878be10923845bcdd1dd039ab0e670e723d" }
 serde = { version = "1.0.203", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0.118", default-features = false }

ldk-server/Cargo.toml

@@ -0,0 +1,35 @@
+refresh_rate: 30 seconds
+
+appenders:
+  rolling_file_appender:
+    kind: rolling_file
+    path: "logs/ldk-server.log"
+    encoder:
+      pattern: "{d(%Y-%m-%d %H:%M:%S)} [{t}] {l} {M} - {m}{n}"
+    policy:
+      kind: compound
+      trigger:
+        kind: size
+        limit: 10485760  # 10 MB per log file
+      roller:
+        kind: fixed_window
+        pattern: "logs/ldk-server.{}.log"
+        base: 1
+        count: 5
+
+root:
+  level: info
+  appenders:
+    - rolling_file_appender
+
+loggers:
+  ldk-server:
+    level: info
+    appenders:
+      - rolling_file_appender
+    additive: false
+  ldk-node:
+    level: debug
+    appenders:
+      - rolling_file_appender
+    additive: false

ldk-server/log4rs.yaml

@@ -23,6 +23,7 @@ use crate::util::config::load_config;
 use crate::util::proto_adapter::forwarded_payment_to_proto;
 use hex::DisplayHex;
 use ldk_node::config::Config;
+use log::info;
 use prost::Message;
 use rand::Rng;
 use std::fs;
@@ -35,6 +36,8 @@ const USAGE_GUIDE: &str = "Usage: ldk-server <config_path>";
 fn main() {
 	let args: Vec<String> = std::env::args().collect();
 
+	log4rs::init_file("./ldk-server/log4rs.yaml", Default::default()).unwrap();
+
 	if args.len() < 2 {
 		eprintln!("{USAGE_GUIDE}");
 		std::process::exit(-1);