reset neuron data on registration

pallets/subtensor/src/subnets/uids.rs

@@ -9,6 +9,27 @@ impl<T: Config> Pallet<T> {
         SubnetworkN::<T>::get(netuid)
     }
 
+    /// Sets value for the element at the given position if it exists.
+    pub fn set_element_at<N>(vec: &mut [N], position: usize, value: N) {
+        if let Some(element) = vec.get_mut(position) {
+            *element = value;
+        }
+    }
+
+    /// Resets the trust, emission, consensus, incentive, dividends of the neuron to default
+    pub fn clear_neuron(netuid: u16, neuron_uid: u16) {
+        let neuron_index: usize = neuron_uid.into();
+        Self::set_element_at(&mut Emission::<T>::get(netuid), neuron_index, 0);
+        for storage in &mut [
+            &mut Trust::<T>::get(netuid),
+            &mut Consensus::<T>::get(netuid),
+            &mut Incentive::<T>::get(netuid),
+            &mut Dividends::<T>::get(netuid),
+        ] {
+            Self::set_element_at(storage, neuron_index, 0);
+        }
+    }
+
     /// Replace the neuron under this uid.
     pub fn replace_neuron(
         netuid: u16,
@@ -48,6 +69,12 @@ impl<T: Config> Pallet<T> {
 
         // 4. Clear neuron certificates
         NeuronCertificates::<T>::remove(netuid, old_hotkey.clone());
+
+        // 5. Reset new neuron's values.
+        Self::clear_neuron(netuid, uid_to_replace);
+
+        // 5a. reset axon info for the new uid.
+        Axons::<T>::remove(netuid, old_hotkey);
     }
 
     /// Appends the uid to the network.

pallets/subtensor/tests/uids.rs

@@ -52,25 +52,58 @@ fn test_replace_neuron() {
         // Get UID
         let neuron_uid = SubtensorModule::get_uid_for_net_and_hotkey(netuid, &hotkey_account_id);
         assert_ok!(neuron_uid);
+        let neuron_uid = neuron_uid.unwrap();
+
+        // set non-default values
+        Trust::<Test>::mutate(netuid, |v| {
+            SubtensorModule::set_element_at(v, neuron_uid as usize, 5u16)
+        });
+        Emission::<Test>::mutate(netuid, |v| {
+            SubtensorModule::set_element_at(v, neuron_uid as usize, 5u64)
+        });
+        Consensus::<Test>::mutate(netuid, |v| {
+            SubtensorModule::set_element_at(v, neuron_uid as usize, 5u16)
+        });
+        Incentive::<Test>::mutate(netuid, |v| {
+            SubtensorModule::set_element_at(v, neuron_uid as usize, 5u16)
+        });
+        Dividends::<Test>::mutate(netuid, |v| {
+            SubtensorModule::set_element_at(v, neuron_uid as usize, 5u16)
+        });
+
+        // serve axon mock address
+        let ip: u128 = 1676056785;
+        let port: u16 = 9999;
+        let ip_type: u8 = 4;
+        let hotkey = SubtensorModule::get_hotkey_for_net_and_uid(netuid, neuron_uid).unwrap();
+        assert!(SubtensorModule::serve_axon(
+            <<Test as Config>::RuntimeOrigin>::signed(hotkey_account_id),
+            netuid,
+            0,
+            ip,
+            port,
+            ip_type,
+            0,
+            0,
+            0
+        )
+        .is_ok());
 
         // Set a neuron certificate for it
         NeuronCertificates::<Test>::insert(netuid, hotkey_account_id, certificate);
 
         // Replace the neuron.
-        SubtensorModule::replace_neuron(
-            netuid,
-            neuron_uid.unwrap(),
-            &new_hotkey_account_id,
-            block_number,
-        );
+        SubtensorModule::replace_neuron(netuid, neuron_uid, &new_hotkey_account_id, block_number);
+
+        assert!(!SubtensorModule::has_axon_info(netuid, &hotkey));
 
         // Check old hotkey is not registered on any network.
         assert!(SubtensorModule::get_uid_for_net_and_hotkey(netuid, &hotkey_account_id).is_err());
         assert!(!SubtensorModule::is_hotkey_registered_on_any_network(
             &hotkey_account_id
         ));
 
-        let curr_hotkey = SubtensorModule::get_hotkey_for_net_and_uid(netuid, neuron_uid.unwrap());
+        let curr_hotkey = SubtensorModule::get_hotkey_for_net_and_uid(netuid, neuron_uid);
         assert_ok!(curr_hotkey);
         assert_ne!(curr_hotkey.unwrap(), hotkey_account_id);
 
@@ -86,6 +119,33 @@ fn test_replace_neuron() {
         // Check neuron certificate was reset
         let certificate = NeuronCertificates::<Test>::get(netuid, hotkey_account_id);
         assert_eq!(certificate, None);
+
+        // // Check trust, emission, consensus, incentive, dividends have been reset to 0.
+        // assert_eq!(SubtensorModule::get_trust_for_uid(netuid, neuron_uid), 0);
+        // assert_eq!(SubtensorModule::get_emission_for_uid(netuid, neuron_uid), 0);
+        // assert_eq!(
+        //     SubtensorModule::get_consensus_for_uid(netuid, neuron_uid),
+        //     0
+        // );
+        // assert_eq!(
+        //     SubtensorModule::get_incentive_for_uid(netuid, neuron_uid),
+        //     0
+        // );
+        // assert_eq!(
+        //     SubtensorModule::get_dividends_for_uid(netuid, neuron_uid),
+        //     0
+        // );
+
+        assert!(!SubtensorModule::has_axon_info(
+            netuid,
+            &new_hotkey_account_id
+        ));
+
+        // Check axon info is reset.
+        let axon_info = SubtensorModule::get_axon_info(netuid, &curr_hotkey.unwrap());
+        assert_eq!(axon_info.ip, 0);
+        assert_eq!(axon_info.port, 0);
+        assert_eq!(axon_info.ip_type, 0);
     });
 }
 

runtime/src/lib.rs

@@ -160,7 +160,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 208,
+    spec_version: 209,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,

support/procedural-fork/src/pallet/parse/storage.rs

@@ -718,11 +718,11 @@ fn process_generics(
         "CountedStorageNMap" => StorageKind::CountedNMap,
         found => {
             let msg = format!(
-				"Invalid pallet::storage, expected ident: `StorageValue` or \
+                "Invalid pallet::storage, expected ident: `StorageValue` or \
 				`StorageMap` or `CountedStorageMap` or `StorageDoubleMap` or `StorageNMap` or `CountedStorageNMap` \
 				in order to expand metadata, found `{}`.",
-				found,
-			);
+                found,
+            );
             return Err(syn::Error::new(segment.ident.span(), msg));
         }
     };

support/procedural-fork/src/runtime/parse/mod.rs

@@ -255,19 +255,19 @@ impl Def {
         };
 
         let def = Def {
-			input,
-			runtime_struct: runtime_struct.ok_or_else(|| {
-				syn::Error::new(item_span,
+            input,
+            runtime_struct: runtime_struct.ok_or_else(|| {
+                syn::Error::new(item_span,
 					"Missing Runtime. Please add a struct inside the module and annotate it with `#[runtime::runtime]`"
 				)
-			})?,
-			pallets,
-			runtime_types: runtime_types.ok_or_else(|| {
-				syn::Error::new(item_span,
+            })?,
+            pallets,
+            runtime_types: runtime_types.ok_or_else(|| {
+                syn::Error::new(item_span,
 					"Missing Runtime Types. Please annotate the runtime struct with `#[runtime::derive]`"
 				)
-			})?,
-		};
+            })?,
+        };
 
         Ok(def)
     }