feat: Set pending hodl invoice to canceled on startup.

At the coordinator startup we stopped all tasks watching invoices. Thus we can safely set all `Open` or `Accepted`  (pending) invoices to `Canceled`.

coordinator/src/bin/coordinator.rs

@@ -3,6 +3,7 @@ use anyhow::Result;
 use bitcoin::key::XOnlyPublicKey;
 use coordinator::backup::SledBackup;
 use coordinator::cli::Opts;
+use coordinator::db;
 use coordinator::dlc_handler;
 use coordinator::dlc_handler::DlcHandler;
 use coordinator::logger;
@@ -356,6 +357,20 @@ async fn main() -> Result<()> {
         }
     });
 
+    if let Err(e) = spawn_blocking({
+        let pool = pool.clone();
+        move || {
+            let mut conn = pool.get()?;
+            db::hodl_invoice::cancel_pending_hodl_invoices(&mut conn)?;
+            anyhow::Ok(())
+        }
+    })
+    .await
+    .expect("task to finish")
+    {
+        tracing::error!("Failed to set expired hodl invoices to canceled. Error: {e:#}");
+    }
+
     tracing::debug!("Listening on http://{}", http_address);
 
     match axum::Server::bind(&http_address)

coordinator/src/db/hodl_invoice.rs

@@ -35,6 +35,13 @@ impl QueryId for InvoiceStateType {
     }
 }
 
+pub fn cancel_pending_hodl_invoices(conn: &mut PgConnection) -> QueryResult<usize> {
+    diesel::update(hodl_invoices::table)
+        .filter(hodl_invoices::invoice_state.eq_any([InvoiceState::Open, InvoiceState::Accepted]))
+        .set(hodl_invoices::invoice_state.eq(InvoiceState::Canceled))
+        .execute(conn)
+}
+
 pub fn create_hodl_invoice(
     conn: &mut PgConnection,
     r_hash: &str,