Trait frame_system::pallet::Config

pub trait Config: 'static + Eq + Clone {
    type BaseCallFilter: Contains<Self::RuntimeCall>;
    type BlockWeights: Get<BlockWeights>;
    type BlockLength: Get<BlockLength>;
    type RuntimeOrigin: Into<Result<RawOrigin<Self::AccountId>, Self::RuntimeOrigin>> + From<RawOrigin<Self::AccountId>> + Clone + OriginTrait<Call = Self::RuntimeCall>;
    type RuntimeCall: Parameter + Dispatchable<RuntimeOrigin = Self::RuntimeOrigin> + Debug + From<Call<Self>>;
    type Index: Parameter + Member + MaybeSerializeDeserialize + Debug + Default + MaybeDisplay + AtLeast32Bit + Copy + MaxEncodedLen;
    type BlockNumber: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + AtLeast32BitUnsigned + Default + Bounded + Copy + Hash + FromStr + MaxEncodedLen + TypeInfo;
    type Hash: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + SimpleBitOps + Ord + Default + Copy + CheckEqual + Hash + AsRef<[u8]> + AsMut<[u8]> + MaxEncodedLen;
    type Hashing: Hash<Output = Self::Hash> + TypeInfo;
    type AccountId: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + Ord + MaxEncodedLen;
    type Lookup: StaticLookup<Target = Self::AccountId>;
    type Header: Parameter + Header<Number = Self::BlockNumber, Hash = Self::Hash>;
    type RuntimeEvent: Parameter + Member + From<Event<Self>> + Debug + IsType<<Self as Config>::RuntimeEvent>;
    type BlockHashCount: Get<Self::BlockNumber>;
    type DbWeight: Get<RuntimeDbWeight>;
    type Version: Get<RuntimeVersion>;
    type PalletInfo: PalletInfo;
    type AccountData: Member + FullCodec + Clone + Default + TypeInfo + MaxEncodedLen;
    type OnNewAccount: OnNewAccount<Self::AccountId>;
    type OnKilledAccount: OnKilledAccount<Self::AccountId>;
    type SystemWeightInfo: WeightInfo;
    type SS58Prefix: Get<u16>;
    type OnSetCode: SetCode<Self>;
    type MaxConsumers: ConsumerLimits;
}

System configuration trait. Implemented by runtime.

Required Associated Types

type BaseCallFilter: Contains<Self::RuntimeCall>

The basic call filter to use in Origin. All origins are built with this filter as base, except Root.

type BlockWeights: Get<BlockWeights>

Block & extrinsics weights: base values and limits.

type BlockLength: Get<BlockLength>

The maximum length of a block (in bytes).

type RuntimeOrigin: Into<Result<RawOrigin<Self::AccountId>, Self::RuntimeOrigin>> + From<RawOrigin<Self::AccountId>> + Clone + OriginTrait<Call = Self::RuntimeCall>

The RuntimeOrigin type used by dispatchable calls.

type RuntimeCall: Parameter + Dispatchable<RuntimeOrigin = Self::RuntimeOrigin> + Debug + From<Call<Self>>

The aggregated RuntimeCall type.

type Index: Parameter + Member + MaybeSerializeDeserialize + Debug + Default + MaybeDisplay + AtLeast32Bit + Copy + MaxEncodedLen

Account index (aka nonce) type. This stores the number of previous transactions associated with a sender account.

type BlockNumber: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + AtLeast32BitUnsigned + Default + Bounded + Copy + Hash + FromStr + MaxEncodedLen + TypeInfo

The block number type used by the runtime.

type Hash: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + SimpleBitOps + Ord + Default + Copy + CheckEqual + Hash + AsRef<[u8]> + AsMut<[u8]> + MaxEncodedLen

The output of the Hashing function.

type Hashing: Hash<Output = Self::Hash> + TypeInfo

The hashing system (algorithm) being used in the runtime (e.g. Blake2).

type AccountId: Parameter + Member + MaybeSerializeDeserialize + Debug + MaybeDisplay + Ord + MaxEncodedLen

The user account identifier type for the runtime.

type Lookup: StaticLookup<Target = Self::AccountId>

Converting trait to take a source type and convert to AccountId.

Used to define the type and conversion mechanism for referencing accounts in transactions. It’s perfectly reasonable for this to be an identity conversion (with the source type being AccountId), but other pallets (e.g. Indices pallet) may provide more functional/efficient alternatives.

type Header: Parameter + Header<Number = Self::BlockNumber, Hash = Self::Hash>

The block header.

type RuntimeEvent: Parameter + Member + From<Event<Self>> + Debug + IsType<<Self as Config>::RuntimeEvent>

The aggregated event type of the runtime.

type BlockHashCount: Get<Self::BlockNumber>

Maximum number of block number to block hash mappings to keep (oldest pruned first).

type DbWeight: Get<RuntimeDbWeight>

The weight of runtime database operations the runtime can invoke.

type Version: Get<RuntimeVersion>

Get the chain’s current version.

type PalletInfo: PalletInfo

Provides information about the pallet setup in the runtime.

Expects the PalletInfo type that is being generated by construct_runtime! in the runtime.

For tests it is okay to use () as type, however it will provide “useless” data.

type AccountData: Member + FullCodec + Clone + Default + TypeInfo + MaxEncodedLen

Data to be associated with an account (other than nonce/transaction counter, which this pallet does regardless).

type OnNewAccount: OnNewAccount<Self::AccountId>

Handler for when a new account has just been created.

type OnKilledAccount: OnKilledAccount<Self::AccountId>

A function that is invoked when an account has been determined to be dead.

All resources should be cleaned up associated with the given account.

type SystemWeightInfo: WeightInfo

type SS58Prefix: Get<u16>

The designated SS58 prefix of this chain.

This replaces the “ss58Format” property declared in the chain spec. Reason is that the runtime should know about the prefix in order to make use of it as an identifier of the chain.

type OnSetCode: SetCode<Self>

What to do if the runtime wants to change the code to something new.

The default (()) implementation is responsible for setting the correct storage entry and emitting corresponding event and log item. (see Pallet::update_code_in_storage). It’s unlikely that this needs to be customized, unless you are writing a parachain using Cumulus, where the actual code change is deferred.

type MaxConsumers: ConsumerLimits

The maximum number of consumers allowed on a single account.

Implementors