add constants

pallets/admin-utils/tests/mock.rs

@@ -126,6 +126,7 @@ parameter_types! {
     pub const InitialColdkeySwapScheduleDuration: u64 = 5 * 24 * 60 * 60 / 12; // 5 days
     pub const InitialGlobalWeight: u64 = u64::MAX/2; // 50% global weight.
     pub const InitialRootWeight: u64 = 3_320_413_900_000_000_000; // 18% root weight
+    pub const InitialMaxNominators: u16 = 10_000; // Per-subnet maximum amount of nominators.
 }
 
 impl pallet_subtensor::Config for Test {
@@ -192,6 +193,7 @@ impl pallet_subtensor::Config for Test {
     type InitialColdkeySwapScheduleDuration = InitialColdkeySwapScheduleDuration;
     type InitialGlobalWeight = InitialGlobalWeight;
     type InitialRootWeight = InitialRootWeight;
+    type InitialMaxNominators = InitialMaxNominators;
 }
 
 #[derive_impl(frame_system::config_preludes::TestDefaultConfig)]

pallets/subtensor/src/lib.rs

@@ -712,6 +712,16 @@ pub mod pallet {
     pub fn DefaultStakeDelta<T: Config>() -> i128 {
         0
     }
+    #[pallet::type_value]
+    /// Default value for maximum nominator count.
+    pub fn DefaultMaxNominators<T: Config>() -> u16 {
+        T::InitialMaxNominators::get()
+    }
+    #[pallet::type_value]
+    /// Default value for minimum stake a nominator has.
+    pub fn DefaultMinNominatorStake<T: Config>() -> u64 {
+        u64::MAX
+    }
 
     #[pallet::storage]
     pub type ColdkeySwapScheduleDuration<T: Config> =

pallets/subtensor/src/macros/config.rs

@@ -213,5 +213,8 @@ mod config {
         /// Coldkey swap schedule duartion.
         #[pallet::constant]
         type InitialColdkeySwapScheduleDuration: Get<BlockNumberFor<Self>>;
+        /// Default value for maximum nominator count.
+        #[pallet::constant]
+        type InitialMaxNominators: Get<u16>;
     }
 }

pallets/subtensor/tests/mock.rs

@@ -179,6 +179,7 @@ parameter_types! {
     pub const InitialColdkeySwapScheduleDuration: u64 =  5 * 24 * 60 * 60 / 12; // Default as 5 days
     pub const InitialGlobalWeight: u64 = 0; // zero global weight.
     pub const InitialRootWeight: u64 = 3_320_413_900_000_000_000; // 18% root weight
+    pub const InitialMaxNominators: u16 = 10_000; // Per-subnet maximum amount of nominators.
 }
 
 // Configure collective pallet for council
@@ -404,6 +405,7 @@ impl pallet_subtensor::Config for Test {
     type InitialColdkeySwapScheduleDuration = InitialColdkeySwapScheduleDuration;
     type InitialGlobalWeight = InitialGlobalWeight;
     type InitialRootWeight = InitialRootWeight;
+    type InitialMaxNominators = InitialMaxNominators;
 }
 
 pub struct OriginPrivilegeCmp;

runtime/src/lib.rs

@@ -984,6 +984,7 @@ parameter_types! {
     pub const SubtensorInitialGlobalWeight: u64 = u64::MAX; // 100% global weight.
     pub const SubtensorInitialRootWeight: u64 = 3_320_413_900_000_000_000; // 18% root weight
     pub const SubtensorInitialColdkeySwapScheduleDuration: BlockNumber = 5 * 24 * 60 * 60 / 12; // 5 days
+    pub const SubtensorInitialMaxNominators: u16 = 100; // Per-subnet maximum amount of nominators. TODO (cam): pick decent value
 }
 
 impl pallet_subtensor::Config for Runtime {
@@ -1049,7 +1050,8 @@ impl pallet_subtensor::Config for Runtime {
     type Preimages = Preimage;
     type InitialColdkeySwapScheduleDuration = SubtensorInitialColdkeySwapScheduleDuration;
     type InitialGlobalWeight = SubtensorInitialGlobalWeight;
-    type InitialRootWeight = SubtensorRootWeight;
+    type InitialRootWeight = SubtensorInitialRootWeight;
+    type InitialMaxNominators = SubtensorInitialMaxNominators;
 }
 
 use sp_runtime::BoundedVec;