make signer warn when coming era is unsupported

Author: ghubertpalo

mithril-signer/src/runtime/runner.rs

@@ -444,12 +444,21 @@ impl Runner for SignerRunner {
             .read_era_epoch_token(epoch)
             .await
             .map_err(Box::new)?;
-
-        self.services.era_checker.change_era(
-            era_token.get_current_supported_era()?,
-            era_token.get_current_epoch(),
+        let current_era = era_token.get_current_supported_era()?;
+        self.services
+            .era_checker
+            .change_era(current_era, era_token.get_current_epoch());
+        info!(
+            "Current Era is {} (Epoch {}).",
+            current_era,
+            era_token.get_current_epoch()
         );
 
+        if era_token.get_next_supported_era().is_err() {
+            let era_name = &era_token.get_next_era_marker().unwrap().name;
+            warn!("Upcoming Era '{era_name}' is not supported by this version of the software. Please update!");
+        }
+
         Ok(())
     }
 }

mithril-signer/src/runtime/state_machine.rs

@@ -126,6 +126,7 @@ impl StateMachine {
                 } else if let Some(epoch_settings) = self.runner.get_epoch_settings().await? {
                     info!("→ Epoch settings found");
                     if epoch_settings.epoch >= *epoch {
+                        info!("new Epoch found");
                         info!(" ⋅ transiting to REGISTERED");
                         self.state = self
                             .transition_from_unregistered_to_registered(&epoch_settings)