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Struct pallet_babe::pallet::Pallet

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pub struct Pallet<T>(/* private fields */);
Expand description

The BABE Pallet

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impl<T: Config> Pallet<T>

Methods for the ValidateUnsigned implementation: It restricts calls to report_equivocation_unsigned to local calls (i.e. extrinsics generated on this node) or that already in a block. This guarantees that only block authors can include unsigned equivocation reports.

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pub fn validate_unsigned( source: TransactionSource, call: &Call<T>, ) -> TransactionValidity

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pub fn pre_dispatch(call: &Call<T>) -> Result<(), TransactionValidityError>

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impl<T: Config> Pallet<T>

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pub fn report_equivocation( origin: OriginFor<T>, equivocation_proof: Box<EquivocationProof<HeaderFor<T>>>, key_owner_proof: T::KeyOwnerProof, ) -> DispatchResultWithPostInfo

Report authority equivocation/misbehavior. This method will verify the equivocation proof and validate the given key ownership proof against the extracted offender. If both are valid, the offence will be reported.

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pub fn report_equivocation_unsigned( origin: OriginFor<T>, equivocation_proof: Box<EquivocationProof<HeaderFor<T>>>, key_owner_proof: T::KeyOwnerProof, ) -> DispatchResultWithPostInfo

Report authority equivocation/misbehavior. This method will verify the equivocation proof and validate the given key ownership proof against the extracted offender. If both are valid, the offence will be reported. This extrinsic must be called unsigned and it is expected that only block authors will call it (validated in ValidateUnsigned), as such if the block author is defined it will be defined as the equivocation reporter.

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pub fn plan_config_change( origin: OriginFor<T>, config: NextConfigDescriptor, ) -> DispatchResult

Plan an epoch config change. The epoch config change is recorded and will be enacted on the next call to enact_epoch_change. The config will be activated one epoch after. Multiple calls to this method will replace any existing planned config change that had not been enacted yet.

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impl<T: Config> Pallet<T>

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pub fn epoch_index() -> u64

Public function to access epoch_index storage.

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pub fn authorities() -> WeakBoundedVec<(AuthorityId, BabeAuthorityWeight), T::MaxAuthorities>

Public function to access authorities storage.

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pub fn genesis_slot() -> Slot

Public function to access genesis_slot storage.

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pub fn current_slot() -> Slot

Public function to access current_slot storage.

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pub fn randomness() -> BabeRandomness

Public function to access randomness storage.

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pub fn initialized() -> Option<Option<PreDigest>>

Public function to access initialized storage.

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pub fn author_vrf_randomness() -> Option<BabeRandomness>

Public function to access author_vrf_randomness storage.

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pub fn lateness() -> BlockNumberFor<T>

Public function to access lateness storage.

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pub fn epoch_config() -> Option<BabeEpochConfiguration>

Public function to access epoch_config storage.

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pub fn skipped_epochs() -> BoundedVec<(u64, SessionIndex), ConstU32<100>>

Public function to access skipped_epochs storage.

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pub fn slot_duration() -> T::Moment

Determine the BABE slot duration based on the Timestamp module configuration.

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pub fn should_epoch_change(now: BlockNumberFor<T>) -> bool

Determine whether an epoch change should take place at this block. Assumes that initialization has already taken place.

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pub fn next_expected_epoch_change( now: BlockNumberFor<T>, ) -> Option<BlockNumberFor<T>>

Return the best guess block number, at which the next epoch change is predicted to happen.

Returns None if the prediction is in the past; This implies an error internally in the Babe and should not happen under normal circumstances.

In other word, this is only accurate if no slots are missed. Given missed slots, the slot number will grow while the block number will not. Hence, the result can be interpreted as an upper bound.

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pub fn enact_epoch_change( authorities: WeakBoundedVec<(AuthorityId, BabeAuthorityWeight), T::MaxAuthorities>, next_authorities: WeakBoundedVec<(AuthorityId, BabeAuthorityWeight), T::MaxAuthorities>, session_index: Option<SessionIndex>, )

DANGEROUS: Enact an epoch change. Should be done on every block where should_epoch_change has returned true, and the caller is the only caller of this function.

Typically, this is not handled directly by the user, but by higher-level validator-set manager logic like pallet-session.

This doesn’t do anything if authorities is empty.

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pub fn current_epoch_start() -> Slot

Finds the start slot of the current epoch.

Only guaranteed to give correct results after initialize of the first block in the chain (as its result is based off of GenesisSlot).

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pub fn current_epoch() -> Epoch

Produces information about the current epoch.

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pub fn next_epoch() -> Epoch

Produces information about the next epoch (which was already previously announced).

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pub fn submit_unsigned_equivocation_report( equivocation_proof: EquivocationProof<HeaderFor<T>>, key_owner_proof: T::KeyOwnerProof, ) -> Option<()>

Submits an extrinsic to report an equivocation. This method will create an unsigned extrinsic with a call to report_equivocation_unsigned and will push the transaction to the pool. Only useful in an offchain context.

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impl<T: Config> BeforeAllRuntimeMigrations for Pallet<T>

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fn before_all_runtime_migrations() -> Weight

Something that should happen before runtime migrations are executed.
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impl<T> Benchmarking for Pallet<T>
where T: Config + Config,

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fn benchmarks(extra: bool) -> Vec<BenchmarkMetadata>

Get the benchmarks available for this pallet. Generally there is one benchmark per extrinsic, so these are sometimes just called “extrinsics”. Read more
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fn run_benchmark( extrinsic: &[u8], c: &[(BenchmarkParameter, u32)], whitelist: &[TrackedStorageKey], verify: bool, internal_repeats: u32, ) -> Result<Vec<BenchmarkResult>, BenchmarkError>

Run the benchmarks for this pallet.
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impl<T: Config> BoundToRuntimeAppPublic for Pallet<T>

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type Public = Public

The [RuntimeAppPublic] this type is bound to.
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impl<T: Config> Callable<T> for Pallet<T>

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impl<T> Clone for Pallet<T>

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T> Debug for Pallet<T>

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fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl<T: Config> EstimateNextSessionRotation<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn average_session_length() -> BlockNumberFor<T>

Return the average length of a session. Read more
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fn estimate_current_session_progress( _now: BlockNumberFor<T>, ) -> (Option<Permill>, Weight)

Return an estimate of the current session progress. Read more
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fn estimate_next_session_rotation( now: BlockNumberFor<T>, ) -> (Option<BlockNumberFor<T>>, Weight)

Return the block number at which the next session rotation is estimated to happen. Read more
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impl<T: Config> FindAuthor<u32> for Pallet<T>

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fn find_author<'a, I>(digests: I) -> Option<u32>
where I: 'a + IntoIterator<Item = (ConsensusEngineId, &'a [u8])>,

Find the author of a block based on the pre-runtime digests.
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impl<T: Config> GetStorageVersion for Pallet<T>

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type InCodeStorageVersion = NoStorageVersionSet

This type is generated by the pallet macro. Read more
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fn in_code_storage_version() -> Self::InCodeStorageVersion

Returns the in-code storage version as specified in the storage_version attribute, or [NoStorageVersionSet] if the attribute is missing.
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fn on_chain_storage_version() -> StorageVersion

Returns the storage version of the pallet as last set in the actual on-chain storage.
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fn current_storage_version() -> Self::InCodeStorageVersion

👎Deprecated: This method has been renamed to in_code_storage_version and will be removed after March 2024.
DEPRECATED: Use [Self::current_storage_version] instead. Read more
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impl<T: Config> Hooks<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_initialize(now: BlockNumberFor<T>) -> Weight

Initialization

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fn on_finalize(_now: BlockNumberFor<T>)

Block finalization

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fn on_idle(_n: BlockNumber, _remaining_weight: Weight) -> Weight

Hook to consume a block’s idle time. This will run when the block is being finalized (before [Hooks::on_finalize]). Read more
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fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)

A hook to run logic after inherent application. Read more
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fn on_runtime_upgrade() -> Weight

Hook executed when a code change (aka. a “runtime upgrade”) is detected by the FRAME Executive pallet. Read more
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fn try_state(_n: BlockNumber) -> Result<(), DispatchError>

Execute the sanity checks of this pallet, per block. Read more
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fn pre_upgrade() -> Result<Vec<u8>, DispatchError>

Execute some pre-checks prior to a runtime upgrade. Read more
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fn post_upgrade(_state: Vec<u8>) -> Result<(), DispatchError>

Execute some post-checks after a runtime upgrade. Read more
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fn offchain_worker(_n: BlockNumber)

Implementing this function on a pallet allows you to perform long-running tasks that are dispatched as separate threads, and entirely independent of the main blockchain execution. Read more
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fn integrity_test()

Check the integrity of this pallet’s configuration. Read more
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impl<T: Config> IntegrityTest for Pallet<T>

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fn integrity_test()

See [Hooks::integrity_test].
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impl<T: Config> IsMember<Public> for Pallet<T>

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fn is_member(authority_id: &AuthorityId) -> bool

Is the given MemberId a valid member?
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impl<T: Config> Lateness<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn lateness(&self) -> BlockNumberFor<T>

Returns a generic measure of how late the current block is compared to its parent.
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impl<T: Config> OffchainWorker<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn offchain_worker(n: BlockNumberFor<T>)

This function is being called after every block import (when fully synced). Read more
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impl<T: Config> OnFinalize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_finalize(n: BlockNumberFor<T>)

See [Hooks::on_finalize].
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impl<T: Config> OnGenesis for Pallet<T>

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fn on_genesis()

Something that should happen at genesis.
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impl<T: Config> OnIdle<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_idle(n: BlockNumberFor<T>, remaining_weight: Weight) -> Weight

See [Hooks::on_idle].
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impl<T: Config> OnInitialize<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_initialize(n: BlockNumberFor<T>) -> Weight

See [Hooks::on_initialize].
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impl<T: Config> OnPoll<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn on_poll(n: BlockNumberFor<T>, weight: &mut WeightMeter)

Code to execute every now and then at the beginning of the block after inherent application. Read more
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impl<T: Config> OnRuntimeUpgrade for Pallet<T>

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fn on_runtime_upgrade() -> Weight

See [Hooks::on_runtime_upgrade].
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fn pre_upgrade() -> Result<Vec<u8>, TryRuntimeError>

See [Hooks::pre_upgrade].
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fn post_upgrade(state: Vec<u8>) -> Result<(), TryRuntimeError>

See [Hooks::post_upgrade].
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fn try_on_runtime_upgrade(checks: bool) -> Result<Weight, DispatchError>

The expected and default behavior of this method is to handle executing pre_upgrade -> on_runtime_upgrade -> post_upgrade hooks for a migration. Read more
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impl<T: Config> OnTimestampSet<<T as Config>::Moment> for Pallet<T>

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fn on_timestamp_set(moment: T::Moment)

Called when the timestamp is set.
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impl<T> OneSessionHandler<<T as Config>::AccountId> for Pallet<T>
where T: Config + Config,

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type Key = Public

The key type expected.
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fn on_genesis_session<'a, I>(validators: I)
where I: Iterator<Item = (&'a T::AccountId, AuthorityId)> + 'a,

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.
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fn on_new_session<'a, I>(_changed: bool, validators: I, queued_validators: I)
where I: Iterator<Item = (&'a T::AccountId, AuthorityId)> + 'a,

Session set has changed; act appropriately. Note that this can be called before initialization of your module. Read more
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fn on_disabled(i: u32)

A validator got disabled. Act accordingly until a new session begins.
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fn on_before_session_ending()

A notification for end of the session. Read more
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impl<T: Config> PalletInfoAccess for Pallet<T>

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fn index() -> usize

Index of the pallet as configured in the runtime.
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fn name() -> &'static str

Name of the pallet as configured in the runtime.
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fn name_hash() -> [u8; 16]

Two128 hash of name.
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fn module_name() -> &'static str

Name of the Rust module containing the pallet.
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fn crate_version() -> CrateVersion

Version of the crate containing the pallet.
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impl<T: Config> PalletsInfoAccess for Pallet<T>

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fn count() -> usize

The number of pallets’ information that this type represents. Read more
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fn infos() -> Vec<PalletInfoData>

All of the pallets’ information that this type represents.
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impl<T> PartialEq for Pallet<T>

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fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<T: Config> ShouldEndSession<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn should_end_session(now: BlockNumberFor<T>) -> bool

Return true if the session should be ended.
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impl<T: Config> StorageInfoTrait for Pallet<T>

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fn storage_info() -> Vec<StorageInfo>

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impl<T: Config> TryDecodeEntireStorage for Pallet<T>

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fn try_decode_entire_state() -> Result<usize, Vec<TryDecodeEntireStorageError>>

Decode the entire data under the given storage, returning Ok(bytes_decoded) if success.
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impl<T: Config> TryState<<<<T as Config>::Block as HeaderProvider>::HeaderT as Header>::Number> for Pallet<T>

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fn try_state( n: BlockNumberFor<T>, _s: TryStateSelect, ) -> Result<(), TryRuntimeError>

Execute the state checks.
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impl<T: Config> ValidateUnsigned for Pallet<T>

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type Call = Call<T>

The call to validate
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fn validate_unsigned( source: TransactionSource, call: &Self::Call, ) -> TransactionValidity

Return the validity of the call Read more
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fn pre_dispatch(call: &Self::Call) -> Result<(), TransactionValidityError>

Validate the call right before dispatch. Read more
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impl<T: Config> WhitelistedStorageKeys for Pallet<T>

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fn whitelisted_storage_keys() -> Vec<TrackedStorageKey>

Returns a Vec<TrackedStorageKey> indicating the storage keys that should be whitelisted during benchmarking. This means that those keys will be excluded from the benchmarking performance calculation.
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impl<T> Eq for Pallet<T>

Auto Trait Implementations§

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impl<T> Freeze for Pallet<T>

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impl<T> RefUnwindSafe for Pallet<T>
where T: RefUnwindSafe,

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impl<T> Send for Pallet<T>
where T: Send,

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impl<T> Sync for Pallet<T>
where T: Sync,

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impl<T> Unpin for Pallet<T>
where T: Unpin,

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impl<T> UnwindSafe for Pallet<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CheckedConversion for T

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fn checked_from<T>(t: T) -> Option<Self>
where Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more
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where Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> Conv for T

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fn conv<T>(self) -> T
where Self: Into<T>,

Converts self into T using Into<T>. Read more
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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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Returns the argument unchanged.

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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U> TryIntoKey<U> for T
where U: TryFromKey<T>,

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type Error = <U as TryFromKey<T>>::Error

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fn try_into_key(self) -> Result<U, <U as TryFromKey<T>>::Error>

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impl<S, T> UncheckedInto<T> for S
where T: UncheckedFrom<S>,

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fn unchecked_into(self) -> T

The counterpart to unchecked_from.
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impl<T, S> UniqueSaturatedInto<T> for S
where T: Bounded, S: TryInto<T>,

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fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> JsonSchemaMaybe for T

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impl<T> MaybeDebug for T
where T: Debug,

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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

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impl<T> MaybeRefUnwindSafe for T
where T: RefUnwindSafe,

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impl<T> Member for T
where T: Send + Sync + Debug + Eq + PartialEq + Clone + 'static,

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impl<T> Scalar for T
where T: 'static + Clone + PartialEq + Debug,