Trait pallet_balances::pallet::Config

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pub trait Config<I: 'static = ()>: Config {
Show 13 associated items
    type RuntimeEvent: From<Event<Self, I>> + IsType<<Self as Config>::RuntimeEvent>;
    type WeightInfo: WeightInfo;
    type Balance: Parameter + Member + AtLeast32BitUnsigned + Codec + Default + Copy + MaybeSerializeDeserialize + Debug + MaxEncodedLen + TypeInfo + FixedPointOperand;
    type DustRemoval: OnUnbalanced<CreditOf<Self, I>>;
    type ExistentialDeposit: Get<Self::Balance>;
    type AccountStore: StoredMap<Self::AccountId, AccountData<Self::Balance>>;
    type ReserveIdentifier: Parameter + Member + MaxEncodedLen + Ord + Copy;
    type RuntimeHoldReason: Parameter + Member + MaxEncodedLen + Ord + Copy;
    type FreezeIdentifier: Parameter + Member + MaxEncodedLen + Ord + Copy;
    type MaxLocks: Get<u32>;
    type MaxReserves: Get<u32>;
    type MaxHolds: Get<u32>;
    type MaxFreezes: Get<u32>;
}

Expand description

Configuration trait of this pallet.

The main purpose of this trait is to act as an interface between this pallet and the runtime in which it is embedded in. A type, function, or constant in this trait is essentially left to be configured by the runtime that includes this pallet.

Consequently, a runtime that wants to include this pallet must implement this trait.

Required Associated Types§

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type RuntimeEvent: From<Event<Self, I>> + IsType<<Self as Config>::RuntimeEvent>

The overarching event type.

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type WeightInfo: WeightInfo

Weight information for extrinsics in this pallet.

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type Balance: Parameter + Member + AtLeast32BitUnsigned + Codec + Default + Copy + MaybeSerializeDeserialize + Debug + MaxEncodedLen + TypeInfo + FixedPointOperand

The balance of an account.

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type DustRemoval: OnUnbalanced<CreditOf<Self, I>>

Handler for the unbalanced reduction when removing a dust account.

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type ExistentialDeposit: Get<Self::Balance>

The minimum amount required to keep an account open. MUST BE GREATER THAN ZERO!

If you really need it to be zero, you can enable the feature insecure_zero_ed for this pallet. However, you do so at your own risk: this will open up a major DoS vector. In case you have multiple sources of provider references, you may also get unexpected behaviour if you set this to zero.

Bottom line: Do yourself a favour and make it at least one!

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