Struct pallet_randomness_collective_flip::Module

pub struct Module<T: Config>(_);

Implementations

impl<T: Config + 'static> Module<T>

pub fn random_material() -> Vec<T::Hash>

Series of block headers from the last 81 blocks that acts as random seed material. This is arranged as a ring buffer with block_number % 81 being the index into the Vec of the oldest hash.

Trait Implementations

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

type Call = Call<T>

impl<T: Clone + Config> Clone for Module<T>

fn clone(&self) -> Module<T>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Config> Debug for Module<T> where
    T: Debug, 

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

Formats the value using the given formatter.

impl<T: Config> GetPalletVersion for Module<T>

fn current_version() -> PalletVersion

Returns the current version of the pallet.

fn storage_version() -> Option<PalletVersion>

Returns the version of the pallet that is stored in storage.

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

pub fn integrity_test()

Run integrity test.

impl<T: Config> ModuleErrorMetadata for Module<T>

fn metadata() -> &'static [ErrorMetadata]

impl<T: Config> OffchainWorker<<T as Config>::BlockNumber> for Module<T>

pub fn offchain_worker(_n: BlockNumber)

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

impl<T: Config> OnFinalize<<T as Config>::BlockNumber> for Module<T>

pub fn on_finalize(_n: BlockNumber)

The block is being finalized. Implement to have something happen.

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

fn on_genesis()

Something that should happen at genesis.

impl<T: Config> OnInitialize<<T as Config>::BlockNumber> for Module<T>

fn on_initialize(block_number: T::BlockNumber) -> Weight

The block is being initialized. Implement to have something happen.

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

fn on_runtime_upgrade() -> Weight

Perform a module upgrade.

impl<T: PartialEq + Config> PartialEq<Module<T>> for Module<T>

fn eq(&self, other: &Module<T>) -> bool

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

fn ne(&self, other: &Module<T>) -> bool

This method tests for !=.

impl<T: Config> Randomness<<T as Config>::Hash> for Module<T>

fn random(subject: &[u8]) -> T::Hash

This randomness uses a low-influence function, drawing upon the block hashes from the previous 81 blocks. Its result for any given subject will be known far in advance by anyone observing the chain. Any block producer has significant influence over their block hashes bounded only by their computational resources. Our low-influence function reduces the actual block producer’s influence over the randomness, but increases the influence of small colluding groups of recent block producers.

WARNING: Hashing the result of this function will remove any low-influence properties it has and mean that all bits of the resulting value are entirely manipulatable by the author of the parent block, who can determine the value of parent_hash.

pub fn random_seed() -> Output

Get the basic random seed.

impl<T: Copy + Config> Copy for Module<T>

impl<T: Eq + Config> Eq for Module<T>

impl<T: Config> StructuralEq for Module<T>

impl<T: Config> StructuralPartialEq for Module<T>