Struct frame_system::CheckGenesis

pub struct CheckGenesis<T: Config + Send + Sync>(_);

Genesis hash check to provide replay protection between different networks.

Transaction Validity

Note that while a transaction with invalid genesis_hash will fail to be decoded, the extension does not affect any other fields of TransactionValidity directly.

Implementations

impl<T: Config + Send + Sync> CheckGenesis<T>

pub fn new() -> Self

Creates new SignedExtension to check genesis hash.

Trait Implementations

impl<T: Clone + Config + Send + Sync> Clone for CheckGenesis<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Config + Send + Sync> Debug for CheckGenesis<T>

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

Formats the value using the given formatter.

impl<T: Config + Send + Sync> Decode for CheckGenesis<T>where
    PhantomData<T>: Decode,

fn decode<__CodecInputEdqy: Input>(
    __codec_input_edqy: &mut __CodecInputEdqy
) -> Result<Self, Error>

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error>where
    I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl<T: Config + Send + Sync> Encode for CheckGenesis<T>where
    PhantomData<T>: Encode,

fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
    &self,
    __codec_dest_edqy: &mut __CodecOutputEdqy
)

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F: FnOnce(&[u8]) -> R>(&self, f: F) -> R

Convert self to a slice and then invoke the given closure with it.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl<T: PartialEq + Config + Send + Sync> PartialEq<CheckGenesis<T>> for CheckGenesis<T>

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

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

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 + Send + Sync> SignedExtension for CheckGenesis<T>

type AccountId = <T as Config>::AccountId

The type which encodes the sender identity.

type Call = <T as Config>::Call

The type which encodes the call to be dispatched.

type AdditionalSigned = <T as Config>::Hash

Any additional data that will go into the signed payload. This may be created dynamically from the transaction using the additional_signed function.

type Pre = ()

The type that encodes information that can be passed from pre_dispatch to post-dispatch.

const IDENTIFIER: &'static str = "CheckGenesis"

Unique identifier of this signed extension.

fn additional_signed(
    &self
) -> Result<Self::AdditionalSigned, TransactionValidityError>

Construct any additional data that should be in the signed payload of the transaction. Can also perform any pre-signature-verification checks and return an error if needed.

fn pre_dispatch(
    self,
    who: &Self::AccountId,
    call: &Self::Call,
    info: &DispatchInfoOf<Self::Call>,
    len: usize
) -> Result<Self::Pre, TransactionValidityError>

Do any pre-flight stuff for a signed transaction.

fn validate(
    &self,
    _who: &Self::AccountId,
    _call: &Self::Call,
    _info: &<Self::Call as Dispatchable>::Info,
    _len: usize
) -> Result<ValidTransaction, TransactionValidityError>

Validate a signed transaction for the transaction queue.

fn validate_unsigned(
    _call: &Self::Call,
    _info: &<Self::Call as Dispatchable>::Info,
    _len: usize
) -> Result<ValidTransaction, TransactionValidityError>

Validate an unsigned transaction for the transaction queue.

fn pre_dispatch_unsigned(
    call: &Self::Call,
    info: &<Self::Call as Dispatchable>::Info,
    len: usize
) -> Result<(), TransactionValidityError>

Do any pre-flight stuff for a unsigned transaction.

fn post_dispatch(
    _pre: Option<Self::Pre>,
    _info: &<Self::Call as Dispatchable>::Info,
    _post_info: &<Self::Call as Dispatchable>::PostInfo,
    _len: usize,
    _result: &Result<(), DispatchError>
) -> Result<(), TransactionValidityError>

Do any post-flight stuff for an extrinsic.

fn metadata() -> Vec<SignedExtensionMetadata, Global>

Returns the metadata for this signed extension.

impl<T> TypeInfo for CheckGenesis<T>where
    PhantomData<T>: TypeInfo + 'static,
    T: Config + Send + Sync + 'static,

type Identity = CheckGenesis<T>

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl<T: Config + Send + Sync> EncodeLike<CheckGenesis<T>> for CheckGenesis<T>where
    PhantomData<T>: Encode,

impl<T: Eq + Config + Send + Sync> Eq for CheckGenesis<T>

impl<T: Config + Send + Sync> StructuralEq for CheckGenesis<T>

impl<T: Config + Send + Sync> StructuralPartialEq for CheckGenesis<T>