Trait pallet_im_online::pallet::Config

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pub trait Config: SendTransactionTypes<Call<Self>> + Config {
    type AuthorityId: Member + Parameter + RuntimeAppPublic + Ord + MaybeSerializeDeserialize + MaxEncodedLen;
    type MaxKeys: Get<u32>;
    type MaxPeerInHeartbeats: Get<u32>;
    type RuntimeEvent: From<Event<Self>> + IsType<<Self as Config>::RuntimeEvent>;
    type ValidatorSet: ValidatorSetWithIdentification<Self::AccountId>;
    type NextSessionRotation: EstimateNextSessionRotation<BlockNumberFor<Self>>;
    type ReportUnresponsiveness: ReportOffence<Self::AccountId, IdentificationTuple<Self>, UnresponsivenessOffence<IdentificationTuple<Self>>>;
    type UnsignedPriority: Get<TransactionPriority>;
    type WeightInfo: WeightInfo;
}

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 AuthorityId: Member + Parameter + RuntimeAppPublic + Ord + MaybeSerializeDeserialize + MaxEncodedLen

The identifier type for an authority.

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type MaxKeys: Get<u32>

The maximum number of keys that can be added.

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type MaxPeerInHeartbeats: Get<u32>

The maximum number of peers to be stored in ReceivedHeartbeats

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

The overarching event type.

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type ValidatorSet: ValidatorSetWithIdentification<Self::AccountId>

A type for retrieving the validators supposed to be online in a session.

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type NextSessionRotation: EstimateNextSessionRotation<BlockNumberFor<Self>>

A trait that allows us to estimate the current session progress and also the average session length.

This parameter is used to determine the longevity of heartbeat transaction and a rough time when we should start considering sending heartbeats, since the workers avoids sending them at the very beginning of the session, assuming there is a chance the authority will produce a block and they won’t be necessary.

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