Trait noble_session::SessionHandler

pub trait SessionHandler<ValidatorId> {
    const KEY_TYPE_IDS: &'static [KeyTypeId];

    fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(ValidatorId, Ks)]);
    fn on_new_session<Ks: OpaqueKeys>(
        changed: bool, 
        validators: &[(ValidatorId, Ks)], 
        queued_validators: &[(ValidatorId, Ks)]
    );
    fn on_disabled(validator_index: usize);

    fn on_before_session_ending() { ... }
}

Handler for session life cycle events.

Associated Constants

const KEY_TYPE_IDS: &'static [KeyTypeId]

All the key type ids this session handler can process.

The order must be the same as it expects them in on_new_session and on_genesis_session.

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Required methods

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(ValidatorId, Ks)])

The given validator set will be used for the genesis session. It is guaranteed that the given validator set will also be used for the second session, therefore the first call to on_new_session should provide the same validator set.

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(ValidatorId, Ks)],
    queued_validators: &[(ValidatorId, Ks)]
)

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

changed is true whenever any of the session keys or underlying economic identities or weightings behind those keys has changed.

fn on_disabled(validator_index: usize)

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

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Provided methods

fn on_before_session_ending()

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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Implementations on Foreign Types

impl<AId, TupleElement0> SessionHandler<AId> for (TupleElement0,) where
    TupleElement0: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1> SessionHandler<AId> for (TupleElement0, TupleElement1) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>,
    TupleElement25: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>,
    TupleElement25: OneSessionHandler<AId>,
    TupleElement26: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>,
    TupleElement25: OneSessionHandler<AId>,
    TupleElement26: OneSessionHandler<AId>,
    TupleElement27: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27, TupleElement28> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27, TupleElement28) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>,
    TupleElement25: OneSessionHandler<AId>,
    TupleElement26: OneSessionHandler<AId>,
    TupleElement27: OneSessionHandler<AId>,
    TupleElement28: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

impl<AId, TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27, TupleElement28, TupleElement29> SessionHandler<AId> for (TupleElement0, TupleElement1, TupleElement2, TupleElement3, TupleElement4, TupleElement5, TupleElement6, TupleElement7, TupleElement8, TupleElement9, TupleElement10, TupleElement11, TupleElement12, TupleElement13, TupleElement14, TupleElement15, TupleElement16, TupleElement17, TupleElement18, TupleElement19, TupleElement20, TupleElement21, TupleElement22, TupleElement23, TupleElement24, TupleElement25, TupleElement26, TupleElement27, TupleElement28, TupleElement29) where
    TupleElement0: OneSessionHandler<AId>,
    TupleElement1: OneSessionHandler<AId>,
    TupleElement2: OneSessionHandler<AId>,
    TupleElement3: OneSessionHandler<AId>,
    TupleElement4: OneSessionHandler<AId>,
    TupleElement5: OneSessionHandler<AId>,
    TupleElement6: OneSessionHandler<AId>,
    TupleElement7: OneSessionHandler<AId>,
    TupleElement8: OneSessionHandler<AId>,
    TupleElement9: OneSessionHandler<AId>,
    TupleElement10: OneSessionHandler<AId>,
    TupleElement11: OneSessionHandler<AId>,
    TupleElement12: OneSessionHandler<AId>,
    TupleElement13: OneSessionHandler<AId>,
    TupleElement14: OneSessionHandler<AId>,
    TupleElement15: OneSessionHandler<AId>,
    TupleElement16: OneSessionHandler<AId>,
    TupleElement17: OneSessionHandler<AId>,
    TupleElement18: OneSessionHandler<AId>,
    TupleElement19: OneSessionHandler<AId>,
    TupleElement20: OneSessionHandler<AId>,
    TupleElement21: OneSessionHandler<AId>,
    TupleElement22: OneSessionHandler<AId>,
    TupleElement23: OneSessionHandler<AId>,
    TupleElement24: OneSessionHandler<AId>,
    TupleElement25: OneSessionHandler<AId>,
    TupleElement26: OneSessionHandler<AId>,
    TupleElement27: OneSessionHandler<AId>,
    TupleElement28: OneSessionHandler<AId>,
    TupleElement29: OneSessionHandler<AId>, 

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(validators: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(
    changed: bool,
    validators: &[(AId, Ks)],
    queued_validators: &[(AId, Ks)]
)

fn on_before_session_ending()

fn on_disabled(i: usize)

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Implementors

impl<AId> SessionHandler<AId> for TestSessionHandler

const KEY_TYPE_IDS: &'static [KeyTypeId]

fn on_genesis_session<Ks: OpaqueKeys>(_: &[(AId, Ks)])

fn on_new_session<Ks: OpaqueKeys>(_: bool, _: &[(AId, Ks)], _: &[(AId, Ks)])

fn on_before_session_ending()

fn on_disabled(_: usize)

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