feat(aggregator): dumb aggregator client records number of signer registrations

Author: jpraynaud

mithril-signer/src/services/aggregator_client.rs

@@ -99,13 +99,19 @@ pub(crate) mod dumb {
         epoch_settings: RwLock<Option<SignerEpochSettings>>,
         last_registered_signer: RwLock<Option<Signer>>,
         aggregator_features: RwLock<AggregatorFeaturesMessage>,
+        total_registered_signers: RwLock<u32>,
     }
 
     impl DumbAggregatorClient {
         /// Return the last signer that called with the `register` method.
         pub async fn get_last_registered_signer(&self) -> Option<Signer> {
             self.last_registered_signer.read().await.clone()
         }
+
+        /// Return the total number of signers that called with the `register` method.
+        pub async fn get_total_registered_signers(&self) -> u32 {
+            *self.total_registered_signers.read().await
+        }
     }
 
     impl Default for DumbAggregatorClient {
@@ -114,6 +120,7 @@ pub(crate) mod dumb {
                 epoch_settings: RwLock::new(Some(SignerEpochSettings::dummy())),
                 last_registered_signer: RwLock::new(None),
                 aggregator_features: RwLock::new(AggregatorFeaturesMessage::dummy()),
+                total_registered_signers: RwLock::new(0),
             }
         }
     }
@@ -132,6 +139,9 @@ pub(crate) mod dumb {
             let signer = signer.clone();
             *last_registered_signer = Some(signer);
 
+            let mut total_registered_signers = self.total_registered_signers.write().await;
+            *total_registered_signers += 1;
+
             Ok(())
         }