Trait pallet_session::OneSessionHandler[−][src]

pub trait OneSessionHandler<ValidatorId>: BoundToRuntimeAppPublic {
    type Key: Decode + Default + RuntimeAppPublic;
    fn on_genesis_session<'a, I: 'a>(validators: I)
    where
        I: Iterator<Item = (&'a ValidatorId, Self::Key)>,
        ValidatorId: 'a;

    fn on_new_session<'a, I: 'a>(
        changed: bool, 
        validators: I, 
        queued_validators: I
    )
    where
        I: Iterator<Item = (&'a ValidatorId, Self::Key)>,
        ValidatorId: 'a;

    fn on_disabled(_validator_index: usize);

    fn on_before_session_ending() { ... }
}

A session handler for specific key type.

Associated Types

type Key: Decode + Default + RuntimeAppPublic[src]

The key type expected.

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Required methods

fn on_genesis_session<'a, I: 'a>(validators: I) where
    I: Iterator<Item = (&'a ValidatorId, Self::Key)>,
    ValidatorId: 'a, [src]

fn on_new_session<'a, I: 'a>(changed: bool, validators: I, queued_validators: I) where
    I: Iterator<Item = (&'a ValidatorId, Self::Key)>,
    ValidatorId: 'a, [src]

Session set has changed; act appropriately. Note that this can be called before initialization of your module.

changed is true when at least one of the session keys or the underlying economic identities/distribution behind one the session keys has changed, false otherwise.

The validators are the validators of the incoming session, and queued_validators will follow.

fn on_disabled(_validator_index: usize)[src]

A validator got disabled. Act accordingly until a new session begins.

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Provided methods

fn on_before_session_ending()[src]

A notification for end of the session.

Note it is triggered before any SessionManager::end_session handlers, so we can still affect the validator set.

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Implementors

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