[Hotfix] fix recent hotifx-regressions

pallets/subtensor/src/coinbase/run_coinbase.rs

@@ -48,6 +48,9 @@ impl<T: Config> Pallet<T> {
         // --- 3. Drain the subnet block emission and accumulate it as subnet emission, which increases until the tempo is reached in #4.
         // subnet_blockwise_emission -> subnet_pending_emission
         for netuid in subnets.clone().iter() {
+            if *netuid == 0 {
+                continue;
+            }
             // --- 3.1 Get the network's block-wise emission amount.
             // This value is newly minted TAO which has not reached staking accounts yet.
             let subnet_blockwise_emission: u64 = EmissionValues::<T>::get(*netuid);
@@ -87,6 +90,11 @@ impl<T: Config> Pallet<T> {
                 Self::set_blocks_since_last_step(*netuid, 0);
                 Self::set_last_mechanism_step_block(*netuid, current_block);
 
+                if *netuid == 0 {
+                    // Skip netuid 0 payouts
+                    continue;
+                }
+
                 // --- 4.4 Distribute owner take.
                 if SubnetOwner::<T>::contains_key(netuid) {
                     // Does the subnet have an owner?
@@ -295,8 +303,8 @@ impl<T: Config> Pallet<T> {
         // --- 8 Iterate over each nominator.
         if total_viable_nominator_stake != 0 {
             for (nominator, nominator_stake) in Stake::<T>::iter_prefix(hotkey) {
-                // --- 9 Check if the stake was manually increased by the user since the last emission drain for this hotkey.
-                // If it was, skip this nominator as they will not receive their proportion of the emission.
+                // --- 9 Skip emission for any stake the was added by the nominator since the last emission drain.
+                // This means the nominator will get emission on existing stake, but not on new stake, until the next emission drain.
                 let viable_nominator_stake =
                     nominator_stake.saturating_sub(Self::get_nonviable_stake(hotkey, &nominator));
 
@@ -323,7 +331,10 @@ impl<T: Config> Pallet<T> {
         let hotkey_new_tao: u64 = hotkey_take.saturating_add(remainder);
         Self::increase_stake_on_hotkey_account(hotkey, hotkey_new_tao);
 
-        // --- 14 Record new tao creation event and return the amount created.
+        // --- 14 Reset the stake delta for the hotkey.
+        let _ = StakeDeltaSinceLastEmissionDrain::<T>::clear_prefix(hotkey, u32::MAX, None);
+
+        // --- 15 Record new tao creation event and return the amount created.
         total_new_tao = total_new_tao.saturating_add(hotkey_new_tao);
         total_new_tao
     }

pallets/subtensor/src/lib.rs

@@ -1299,7 +1299,7 @@ pub mod pallet {
         /// Returns the transaction priority for setting weights.
         pub fn get_priority_set_weights(hotkey: &T::AccountId, netuid: u16) -> u64 {
             if let Ok(uid) = Self::get_uid_for_net_and_hotkey(netuid, hotkey) {
-                let _stake = Self::get_total_stake_for_hotkey(hotkey);
+                let _stake = Self::get_stake_for_hotkey_on_subnet(hotkey, netuid);
                 let current_block_number: u64 = Self::get_current_block_as_u64();
                 let default_priority: u64 =
                     current_block_number.saturating_sub(Self::get_last_update_for_uid(netuid, uid));
@@ -1309,9 +1309,9 @@ pub mod pallet {
         }
 
         /// Is the caller allowed to set weights
-        pub fn check_weights_min_stake(hotkey: &T::AccountId) -> bool {
+        pub fn check_weights_min_stake(hotkey: &T::AccountId, netuid: u16) -> bool {
             // Blacklist weights transactions for low stake peers.
-            Self::get_total_stake_for_hotkey(hotkey) >= Self::get_weights_min_stake()
+            Self::get_stake_for_hotkey_on_subnet(hotkey, netuid) >= Self::get_weights_min_stake()
         }
 
         /// Helper function to check if register is allowed
@@ -1404,8 +1404,8 @@ where
         Pallet::<T>::get_priority_set_weights(who, netuid)
     }
 
-    pub fn check_weights_min_stake(who: &T::AccountId) -> bool {
-        Pallet::<T>::check_weights_min_stake(who)
+    pub fn check_weights_min_stake(who: &T::AccountId, netuid: u16) -> bool {
+        Pallet::<T>::check_weights_min_stake(who, netuid)
     }
 }
 
@@ -1443,7 +1443,7 @@ where
     ) -> TransactionValidity {
         match call.is_sub_type() {
             Some(Call::commit_weights { netuid, .. }) => {
-                if Self::check_weights_min_stake(who) {
+                if Self::check_weights_min_stake(who, *netuid) {
                     let priority: u64 = Self::get_priority_set_weights(who, *netuid);
                     Ok(ValidTransaction {
                         priority,
@@ -1455,7 +1455,7 @@ where
                 }
             }
             Some(Call::reveal_weights { netuid, .. }) => {
-                if Self::check_weights_min_stake(who) {
+                if Self::check_weights_min_stake(who, *netuid) {
                     let priority: u64 = Self::get_priority_set_weights(who, *netuid);
                     Ok(ValidTransaction {
                         priority,
@@ -1467,7 +1467,7 @@ where
                 }
             }
             Some(Call::batch_reveal_weights { netuid, .. }) => {
-                if Self::check_weights_min_stake(who) {
+                if Self::check_weights_min_stake(who, *netuid) {
                     let priority: u64 = Self::get_priority_set_weights(who, *netuid);
                     Ok(ValidTransaction {
                         priority,
@@ -1479,7 +1479,7 @@ where
                 }
             }
             Some(Call::set_weights { netuid, .. }) => {
-                if Self::check_weights_min_stake(who) {
+                if Self::check_weights_min_stake(who, *netuid) {
                     let priority: u64 = Self::get_priority_set_weights(who, *netuid);
                     Ok(ValidTransaction {
                         priority,
@@ -1491,7 +1491,7 @@ where
                 }
             }
             Some(Call::set_root_weights { netuid, hotkey, .. }) => {
-                if Self::check_weights_min_stake(hotkey) {
+                if Self::check_weights_min_stake(hotkey, *netuid) {
                     let priority: u64 = Self::get_priority_set_weights(hotkey, *netuid);
                     Ok(ValidTransaction {
                         priority,

pallets/subtensor/src/rpc_info/neuron_info.rs

@@ -1,6 +1,5 @@
 use super::*;
 use frame_support::pallet_prelude::{Decode, Encode};
-use frame_support::storage::IterableStorageDoubleMap;
 extern crate alloc;
 use codec::Compact;
 
@@ -179,12 +178,10 @@ impl<T: Config> Pallet<T> {
         let last_update = Self::get_last_update_for_uid(netuid, uid);
         let validator_permit = Self::get_validator_permit_for_uid(netuid, uid);
 
-        let stake: Vec<(T::AccountId, Compact<u64>)> =
-            <Stake<T> as IterableStorageDoubleMap<T::AccountId, T::AccountId, u64>>::iter_prefix(
-                hotkey.clone(),
-            )
-            .map(|(coldkey, stake)| (coldkey, stake.into()))
-            .collect();
+        let stake: Vec<(T::AccountId, Compact<u64>)> = vec![(
+            coldkey.clone(),
+            Self::get_stake_for_hotkey_on_subnet(&hotkey, netuid).into(),
+        )];
 
         let neuron = NeuronInfoLite {
             hotkey: hotkey.clone(),

pallets/subtensor/src/staking/helpers.rs

@@ -297,6 +297,9 @@ impl<T: Config> Pallet<T> {
         staking_hotkeys.retain(|h| h != hotkey);
         StakingHotkeys::<T>::insert(coldkey, staking_hotkeys);
 
+        // Update stake delta
+        StakeDeltaSinceLastEmissionDrain::<T>::remove(hotkey, coldkey);
+
         current_stake
     }
 
@@ -431,6 +434,9 @@ impl<T: Config> Pallet<T> {
 
             // Add the balance to the coldkey account.
             Self::add_balance_to_coldkey_account(&delegate_coldkey_i, stake_i);
+
+            // Remove stake delta
+            StakeDeltaSinceLastEmissionDrain::<T>::remove(hotkey, &delegate_coldkey_i);
         }
     }
 }

pallets/subtensor/src/staking/remove_stake.rs

@@ -76,6 +76,11 @@ impl<T: Config> Pallet<T> {
         // We remove the balance from the hotkey.
         Self::decrease_stake_on_coldkey_hotkey_account(&coldkey, &hotkey, stake_to_be_removed);
 
+        // Track this removal in the stake delta.
+        StakeDeltaSinceLastEmissionDrain::<T>::mutate(&hotkey, &coldkey, |stake_delta| {
+            *stake_delta = stake_delta.saturating_sub_unsigned(stake_to_be_removed as u128);
+        });
+
         // We add the balance to the coldkey.  If the above fails we will not credit this coldkey.
         Self::add_balance_to_coldkey_account(&coldkey, stake_to_be_removed);
 

pallets/subtensor/src/subnets/uids.rs

@@ -120,7 +120,7 @@ impl<T: Config> Pallet<T> {
     ///
     pub fn get_stake_for_uid_and_subnetwork(netuid: u16, neuron_uid: u16) -> u64 {
         if let Ok(hotkey) = Self::get_hotkey_for_net_and_uid(netuid, neuron_uid) {
-            Self::get_total_stake_for_hotkey(&hotkey)
+            Self::get_stake_for_hotkey_on_subnet(&hotkey, netuid)
         } else {
             0
         }

pallets/subtensor/src/subnets/weights.rs

@@ -525,9 +525,9 @@ impl<T: Config> Pallet<T> {
             Error::<T>::HotKeyNotRegisteredInSubNet
         );
 
-        // --- 6. Check to see if the hotkey has enought stake to set weights.
+        // --- 6. Check to see if the hotkey has enough stake to set weights.
         ensure!(
-            Self::get_total_stake_for_hotkey(&hotkey) >= Self::get_weights_min_stake(),
+            Self::check_weights_min_stake(&hotkey, netuid),
             Error::<T>::NotEnoughStakeToSetWeights
         );
 

pallets/subtensor/src/swap/swap_coldkey.rs

@@ -169,7 +169,20 @@ impl<T: Config> Pallet<T> {
             weight.saturating_accrue(T::DbWeight::get().reads_writes(2, 2));
         }
 
-        // 4. Swap total coldkey stake.
+        // 4. Swap StakeDeltaSinceLastEmissionDrain
+        for hotkey in StakingHotkeys::<T>::get(old_coldkey) {
+            let old_stake_delta = StakeDeltaSinceLastEmissionDrain::<T>::get(&hotkey, old_coldkey);
+            let new_stake_delta = StakeDeltaSinceLastEmissionDrain::<T>::get(&hotkey, new_coldkey);
+            StakeDeltaSinceLastEmissionDrain::<T>::insert(
+                &hotkey,
+                new_coldkey,
+                new_stake_delta.saturating_add(old_stake_delta),
+            );
+            StakeDeltaSinceLastEmissionDrain::<T>::remove(&hotkey, old_coldkey);
+            weight.saturating_accrue(T::DbWeight::get().reads_writes(2, 2));
+        }
+
+        // 5. Swap total coldkey stake.
         // TotalColdkeyStake: MAP ( coldkey ) --> u64 | Total stake of the coldkey.
         let old_coldkey_stake: u64 = TotalColdkeyStake::<T>::get(old_coldkey);
         // Get the stake of the new coldkey.
@@ -183,7 +196,7 @@ impl<T: Config> Pallet<T> {
         );
         weight.saturating_accrue(T::DbWeight::get().reads_writes(2, 2));
 
-        // 5. Swap StakingHotkeys.
+        // 6. Swap StakingHotkeys.
         // StakingHotkeys: MAP ( coldkey ) --> Vec<hotkeys> | Hotkeys staking for the coldkey.
         let old_staking_hotkeys: Vec<T::AccountId> = StakingHotkeys::<T>::get(old_coldkey);
         let mut new_staking_hotkeys: Vec<T::AccountId> = StakingHotkeys::<T>::get(new_coldkey);
@@ -197,7 +210,7 @@ impl<T: Config> Pallet<T> {
         StakingHotkeys::<T>::insert(new_coldkey, new_staking_hotkeys);
         weight.saturating_accrue(T::DbWeight::get().reads_writes(2, 2));
 
-        // 6. Swap hotkey owners.
+        // 7. Swap hotkey owners.
         // Owner: MAP ( hotkey ) --> coldkey | Owner of the hotkey.
         // OwnedHotkeys: MAP ( coldkey ) --> Vec<hotkeys> | Hotkeys owned by the coldkey.
         let old_owned_hotkeys: Vec<T::AccountId> = OwnedHotkeys::<T>::get(old_coldkey);
@@ -216,7 +229,7 @@ impl<T: Config> Pallet<T> {
         OwnedHotkeys::<T>::insert(new_coldkey, new_owned_hotkeys);
         weight.saturating_accrue(T::DbWeight::get().reads_writes(2, 2));
 
-        // 7. Transfer remaining balance.
+        // 8. Transfer remaining balance.
         // Balance: MAP ( coldkey ) --> u64 | Balance of the coldkey.
         // Transfer any remaining balance from old_coldkey to new_coldkey
         let remaining_balance = Self::get_coldkey_balance(old_coldkey);