Rework GraduatedRebalancer to work across restarts

Previously, we would await payment successes before doing a rebalance
successful event. This would cause issues if the app was closed during a
rebalance. This adds handling so the GraduatedRebalancer is now event
based and persists its state. We also now have better handling for
failed rebalances to go along with it.

Author: benthecarman

Cargo.toml

@@ -19,6 +19,7 @@ panic = 'abort'     # Abort on panic
 bitcoin-payment-instructions = { version = "0.6.0" }
 lightning = { version = "0.2.0" }
 lightning-invoice = { version = "0.34.0" }
+lightning-macros = "0.2.0"
 
 [profile.release]
 panic = "abort"

examples/cli/src/main.rs

@@ -4,6 +4,7 @@ use colored::Colorize;
 use rustyline::DefaultEditor;
 use rustyline::error::ReadlineError;
 
+use orange_sdk::bitcoin::hex::DisplayHex;
 use orange_sdk::bitcoin_payment_instructions::amount::Amount;
 use orange_sdk::{
 	CashuConfig, ChainSource, CurrencyUnit, Event, ExtraConfig, LoggerType, Mnemonic, PaymentInfo,
@@ -224,6 +225,21 @@ impl WalletState {
 								fee_msat
 							);
 						},
+						Event::RebalanceFailed {
+							trigger_payment_id,
+							trusted_rebalance_payment_id,
+							amount_msat,
+							reason,
+						} => {
+							println!(
+								"{} Rebalance failed: {} msat, trigger_payment_id: {}, trusted_rebalance_payment_id: {:?}, reason: {}",
+								"❌".bright_red(),
+								amount_msat,
+								trigger_payment_id,
+								trusted_rebalance_payment_id.map(|id| id.to_lower_hex_string()),
+								reason
+							);
+						},
 						Event::SplicePending { new_funding_txo, .. } => {
 							println!(
 								"{} Splice pending: {}",

graduated-rebalancer/Cargo.toml

@@ -10,4 +10,5 @@ license = "MIT OR Apache-2.0"
 bitcoin-payment-instructions = { workspace = true }
 lightning = { workspace = true }
 lightning-invoice = { workspace = true }
-tokio = { version = "1", default-features = false }
+lightning-macros = { workspace = true }
+tokio = { version = "1", default-features = false, features = ["sync", "macros"] }