Using tracing and simplifying a lot of console output in Bitcoin driver

side-node/src/bitcoin/driver.rs

@@ -1,43 +1,32 @@
-use bdk_wallet::bitcoin::{Amount, Network};
-
 use crate::bitcoin::clients;
+use bdk_wallet::bitcoin::{Amount, Network};
+use tracing_subscriber::filter::EnvFilter;
+use tracing_subscriber::util::SubscriberInitExt;
+use tracing_subscriber::{fmt, layer::SubscriberExt};
 
 pub(crate) async fn simple_transfer() -> Result<(), anyhow::Error> {
+    tracing_setup();
+
     let mut dave = clients::esplora::create_wallet("dave", Network::Signet)?;
     let mut sammy = clients::esplora::create_wallet("sammy", Network::Signet)?;
 
     let _next_address = dave.next_unused_address()?;
 
-    let dave_balance = dave.balance();
-    println!(
-        "Dave wallet balance before syncing: {} sats",
-        dave_balance.total()
-    );
+    let _ = dave.balance();
 
     dave.sync().await?;
-
     let dave_balance = dave.balance();
-    println!("Wallet balance after syncing: {} sats", dave_balance);
-
     let sammy_address = sammy.next_unused_address()?.address;
-    println!("Sammy's address: {}", sammy_address);
-
-    let sammy_balance = sammy.balance();
-    println!(
-        "Sammy wallet balance before syncing: {} sats",
-        sammy_balance
-    );
 
+    let _sammy = sammy.balance();
     sammy.sync().await?;
-
-    let sammy_balance = sammy.balance();
-    println!("Sammy wallet balance after syncing: {} sats", sammy_balance);
+    let _sammy = sammy.balance();
 
     let send_amount = Amount::from_sat(500);
 
     if dave_balance.total() < send_amount {
-        println!(
-            "Please send at least {} sats to the receiving address",
+        tracing::error!(
+            "Please send at least {} sats to the receiving address. Exiting.",
             send_amount
         );
         std::process::exit(0);
@@ -58,3 +47,12 @@ pub(crate) async fn htlc() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+fn tracing_setup() {
+    tracing_subscriber::registry()
+        .with(fmt::layer())
+        .with(EnvFilter::from_default_env())
+        .init();
+
+    tracing::info!("Tracing initialized.");
+}