Struct pallet_preimage::pallet::Pallet

impl<T: Config> Pallet<T>

pub fn note_preimage( origin: OriginFor<T>, bytes: Vec<u8> ) -> DispatchResultWithPostInfo

Register a preimage on-chain.

If the preimage was previously requested, no fees or deposits are taken for providing the preimage. Otherwise, a deposit is taken proportional to the size of the preimage.

pub fn unnote_preimage(origin: OriginFor<T>, hash: T::Hash) -> DispatchResult

Clear an unrequested preimage from the runtime storage.

If len is provided, then it will be a much cheaper operation.

hash: The hash of the preimage to be removed from the store.
len: The length of the preimage of hash.

pub fn request_preimage(origin: OriginFor<T>, hash: T::Hash) -> DispatchResult

Request a preimage be uploaded to the chain without paying any fees or deposits.

If the preimage requests has already been provided on-chain, we unreserve any deposit a user may have paid, and take the control of the preimage out of their hands.

pub fn unrequest_preimage(origin: OriginFor<T>, hash: T::Hash) -> DispatchResult

Clear a previously made request for a preimage.

NOTE: THIS MUST NOT BE CALLED ON hash MORE TIMES THAN request_preimage.

pub fn ensure_updated( origin: OriginFor<T>, hashes: Vec<T::Hash> ) -> DispatchResultWithPostInfo

Ensure that the a bulk of pre-images is upgraded.

The caller pays no fee if at least 90% of pre-images were successfully updated.

pub(crate) fn ensure_signed_or_manager( origin: T::RuntimeOrigin ) -> Result<Option<T::AccountId>, BadOrigin>

Ensure that the origin is either the ManagerOrigin or a signed origin.

pub(crate) fn note_bytes( preimage: Cow<'_, [u8]>, maybe_depositor: Option<&T::AccountId> ) -> Result<(bool, T::Hash), DispatchError>

Store some preimage on chain.

If maybe_depositor is None then it is also requested. If Some, then it is not.

We verify that the preimage is within the bounds of what the pallet supports.

If the preimage was requested to be uploaded, then the user pays no deposits or tx fees.

pub(crate) fn do_request_preimage(hash: &T::Hash)

pub(crate) fn do_unnote_preimage( hash: &T::Hash, maybe_check_owner: Option<T::AccountId> ) -> DispatchResult

pub(crate) fn do_unrequest_preimage(hash: &T::Hash) -> DispatchResult

Clear a preimage request.

pub(crate) fn insert(hash: &T::Hash, preimage: Cow<'_, [u8]>) -> Result<(), ()>

pub(crate) fn remove(hash: &T::Hash, len: u32)

pub(crate) fn have(hash: &T::Hash) -> bool

pub(crate) fn len(hash: &T::Hash) -> Option<u32>

pub(crate) fn fetch(hash: &T::Hash, len: Option<u32>) -> FetchResult

Trait Implementations§

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

fn before_all_runtime_migrations() -> Weight

Something that should happen before runtime migrations are executed.

impl<T> Benchmarking for Pallet<T>
where T: Config + Config,

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

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.

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

impl<T> Clone for Pallet<T>

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

impl<T> Debug for Pallet<T>

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

Formats the value using the given formatter. Read more

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

type InCodeStorageVersion = StorageVersion

This type is generated by the pallet macro. Read more

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.

fn on_chain_storage_version() -> StorageVersion

Returns the storage version of the pallet as last set in the actual on-chain storage.

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

fn on_initialize(_n: BlockNumber) -> Weight

Block initialization hook. This is called at the very beginning of block execution. Read more

fn on_finalize(_n: BlockNumber)

Block finalization hook. This is called at the very end of block execution. Read more

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

fn on_poll(_n: BlockNumber, _weight: &mut WeightMeter)

A hook to run logic after inherent application. Read more

fn on_runtime_upgrade() -> Weight

Hook executed when a code change (aka. a “runtime upgrade”) is detected by the FRAME Executive pallet. Read more

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

fn integrity_test()

Check the integrity of this pallet’s configuration. Read more

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

fn offchain_worker(n: BlockNumberFor<T>)

This function is being called after every block import (when fully synced). Read more

fn on_finalize(n: BlockNumberFor<T>)

See [Hooks::on_finalize].

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

fn on_genesis()

Something that should happen at genesis.

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

See [Hooks::on_idle].

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

See [Hooks::on_initialize].

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

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

fn on_runtime_upgrade() -> Weight

See [Hooks::on_runtime_upgrade].

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

fn index() -> usize

Index of the pallet as configured in the runtime.

fn name() -> &'static str

Name of the pallet as configured in the runtime.

fn module_name() -> &'static str

Name of the Rust module containing the pallet.

fn crate_version() -> CrateVersion

Version of the crate containing the pallet.

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

fn count() -> usize

The number of pallets’ information that this type represents. Read more

fn infos() -> Vec<PalletInfoData>

All of the pallets’ information that this type represents.

impl<T> PartialEq for Pallet<T>

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

This method tests for self and other values to be equal, and is used by ==.

1.0.0 · source§

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.

impl<T: Config> PreimageProvider<<T as Config>::Hash> for Pallet<T>

fn have_preimage(hash: &T::Hash) -> bool

Returns whether a preimage exists for a given hash. Read more

fn preimage_requested(hash: &T::Hash) -> bool

Returns whether a preimage request exists for a given hash.

fn get_preimage(hash: &T::Hash) -> Option<Vec<u8>>

Returns the preimage for a given hash.

fn request_preimage(hash: &T::Hash)

Request that someone report a preimage. Providers use this to optimise the economics for preimage reporting.

fn unrequest_preimage(hash: &T::Hash)

Cancel a previous preimage request.

impl<T: Config> PreimageRecipient<<T as Config>::Hash> for Pallet<T>

type MaxSize = ConstU32<MAX_SIZE>

Maximum size of a preimage.

fn note_preimage(bytes: BoundedVec<u8, Self::MaxSize>)

Store the bytes of a preimage on chain infallible due to the bounded type.

fn unnote_preimage(hash: &T::Hash)

Clear a previously noted preimage. This is infallible and should be treated more like a hint - if it was not previously noted or if it is now requested, then this will not do anything.

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

type H = <T as Config>::Hashing

The hasher used in the runtime.

fn len(hash: &T::Hash) -> Option<u32>

Returns whether a preimage exists for a given hash and if so its length.

fn fetch(hash: &T::Hash, len: Option<u32>) -> FetchResult

Returns the preimage for a given hash. If given, len must be the size of the preimage.

fn is_requested(hash: &T::Hash) -> bool

Returns whether a preimage request exists for a given hash.

fn request(hash: &T::Hash)

Request that someone report a preimage. Providers use this to optimise the economics for preimage reporting.

fn unrequest(hash: &T::Hash)

Cancel a previous preimage request.

fn hold<T>(bounded: &Bounded<T, Self::H>)

Request that the data required for decoding the given bounded value is made available.

fn drop<T>(bounded: &Bounded<T, Self::H>)

No longer request that the data required for decoding the given bounded value is made available.

fn have<T>(bounded: &Bounded<T, Self::H>) -> bool

Check to see if all data required for the given bounded value is available for its decoding.

fn pick<T>(hash: <Self::H as Hasher>::Out, len: u32) -> Bounded<T, Self::H>

Create a Bounded instance based on the hash and len of the encoded value. Read more

fn peek<T>( bounded: &Bounded<T, Self::H> ) -> Result<(T, Option<u32>), DispatchError>
where T: Decode,

Convert the given bounded instance back into its original instance, also returning the exact size of its encoded form if it needed to be looked-up from a stored preimage). Read more

fn realize<T>( bounded: &Bounded<T, Self::H> ) -> Result<(T, Option<u32>), DispatchError>
where T: Decode,

Convert the given bounded value back into its original instance. If successful, drop any data backing it. This will not break the realisability of independently created instances of Bounded which happen to have identical data.

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

fn storage_info() -> Vec<StorageInfo>

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

const MAX_LENGTH: usize = 4_194_304usize

The maximum length of preimage we can store. Read more

fn note(bytes: Cow<'_, [u8]>) -> Result<T::Hash, DispatchError>

Request and attempt to store the bytes of a preimage on chain. Read more

fn unnote(hash: &T::Hash)

Attempt to clear a previously noted preimage. Exactly the same as unrequest but is provided for symmetry.

fn bound<T>(t: T) -> Result<Bounded<T, Self::H>, DispatchError>
where T: Encode,

Convert an otherwise unbounded or large value into a type ready for placing in storage. Read more

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

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.

impl<T> Eq for Pallet<T>

Auto Trait Implementations§

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

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

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

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

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

Blanket Implementations§

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

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Gets the TypeId of self. Read more

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where T: ?Sized,

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Immutably borrows from an owned value. Read more

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Mutably borrows from an owned value. Read more

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

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fn __clone_box(&self, _: Private) -> *mut ()

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Compare self to key and return true if they are equal.

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Causes self to use its LowerHex implementation when Debug-formatted.

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Formats each item in a sequence. Read more

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