Struct Rotator 

pub struct Rotator<T: Config>(/* private fields */);

Manages session rotation logic.

This controls the following storage items in FULL, meaning that they should not be accessed directly from anywhere else in this pallet:

• CurrentEra: The current planning era
• ActiveEra: The current active era
• BondedEras: the list of ACTIVE eras and their session index

Implementations

impl<T: Config> Rotator<T>

pub fn assert_election_ongoing()

pub fn planned_era() -> EraIndex

Latest era that was planned.

The returned value does not necessarily indicate that planning for the era with this index is underway, but rather the last era that was planned. If Self::active_era() is equal to this value, it means that the era is currently active and no new era is planned.

See Self::is_planning() to only get the next index if planning in progress.

pub fn active_era() -> EraIndex

pub fn is_planning() -> Option<EraIndex>

Next era that is planned to be started.

Returns None if no era is planned.

pub fn active_era_start_session_index() -> SessionIndex

The session index of the current active era.

This must always exist in the BondedEras storage item, ergo the function is infallible.

pub fn era_start_session_index(era: EraIndex) -> Option<SessionIndex>

The session index of a given era.