Struct frame_system::CheckNonce
source · pub struct CheckNonce<T: Config>(pub T::Nonce);
Expand description
Nonce check and increment to give replay protection for transactions.
§Transaction Validity
This extension affects requires
and provides
tags of validity, but DOES NOT
set the priority
field. Make sure that AT LEAST one of the signed extension sets
some kind of priority upon validating transactions.
Tuple Fields§
§0: T::Nonce
Implementations§
Trait Implementations§
source§impl<T: Clone + Config> Clone for CheckNonce<T>
impl<T: Clone + Config> Clone for CheckNonce<T>
source§fn clone(&self) -> CheckNonce<T>
fn clone(&self) -> CheckNonce<T>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<T: Config> Debug for CheckNonce<T>
impl<T: Config> Debug for CheckNonce<T>
source§impl<T: Config> Decode for CheckNonce<T>where
T::Nonce: HasCompact,
impl<T: Config> Decode for CheckNonce<T>where
T::Nonce: HasCompact,
source§fn decode<__CodecInputEdqy: Input>(
__codec_input_edqy: &mut __CodecInputEdqy,
) -> Result<Self, Error>
fn decode<__CodecInputEdqy: Input>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<Self, Error>
Attempt to deserialise the value from input.
§fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
fn decode_into<I>(
input: &mut I,
dst: &mut MaybeUninit<Self>,
) -> Result<DecodeFinished, Error>where
I: Input,
Attempt to deserialize the value from input into a pre-allocated piece of memory. Read more
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
Attempt to skip the encoded value from input. Read more
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
Returns the fixed encoded size of the type. Read more
source§impl<T: Config> Encode for CheckNonce<T>where
T::Nonce: HasCompact,
impl<T: Config> Encode for CheckNonce<T>where
T::Nonce: HasCompact,
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
If possible give a hint of expected size of the encoding. Read more
source§fn encode_to<__CodecOutputEdqy: Output + ?Sized>(
&self,
__codec_dest_edqy: &mut __CodecOutputEdqy,
)
fn encode_to<__CodecOutputEdqy: Output + ?Sized>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )
Convert self to a slice and append it to the destination.
source§fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>(
&self,
f: __CodecUsingEncodedCallback,
) -> __CodecOutputReturn
fn using_encoded<__CodecOutputReturn, __CodecUsingEncodedCallback: FnOnce(&[u8]) -> __CodecOutputReturn>( &self, f: __CodecUsingEncodedCallback, ) -> __CodecOutputReturn
Convert self to a slice and then invoke the given closure with it.
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
Calculates the encoded size. Read more
source§impl<T: PartialEq + Config> PartialEq for CheckNonce<T>
impl<T: PartialEq + Config> PartialEq for CheckNonce<T>
source§fn eq(&self, other: &CheckNonce<T>) -> bool
fn eq(&self, other: &CheckNonce<T>) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.source§impl<T: Config> SignedExtension for CheckNonce<T>where
T::RuntimeCall: Dispatchable<Info = DispatchInfo>,
impl<T: Config> SignedExtension for CheckNonce<T>where
T::RuntimeCall: Dispatchable<Info = DispatchInfo>,
§type Call = <T as Config>::RuntimeCall
type Call = <T as Config>::RuntimeCall
The type which encodes the call to be dispatched.
§type AdditionalSigned = ()
type AdditionalSigned = ()
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 = ()
type Pre = ()
The type that encodes information that can be passed from pre_dispatch to post-dispatch.
source§const IDENTIFIER: &'static str = "CheckNonce"
const IDENTIFIER: &'static str = "CheckNonce"
Unique identifier of this signed extension. Read more
source§fn additional_signed(&self) -> Result<(), TransactionValidityError>
fn additional_signed(&self) -> Result<(), 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.
source§fn pre_dispatch(
self,
who: &Self::AccountId,
_call: &Self::Call,
_info: &DispatchInfoOf<Self::Call>,
_len: usize,
) -> Result<(), TransactionValidityError>
fn pre_dispatch( self, who: &Self::AccountId, _call: &Self::Call, _info: &DispatchInfoOf<Self::Call>, _len: usize, ) -> Result<(), TransactionValidityError>
Do any pre-flight stuff for a signed transaction. Read more
source§fn validate(
&self,
who: &Self::AccountId,
_call: &Self::Call,
_info: &DispatchInfoOf<Self::Call>,
_len: usize,
) -> TransactionValidity
fn validate( &self, who: &Self::AccountId, _call: &Self::Call, _info: &DispatchInfoOf<Self::Call>, _len: usize, ) -> TransactionValidity
Validate a signed transaction for the transaction queue. Read more
§fn validate_unsigned(
_call: &Self::Call,
_info: &<Self::Call as Dispatchable>::Info,
_len: usize,
) -> Result<ValidTransaction, TransactionValidityError>
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. Read more
§fn pre_dispatch_unsigned(
call: &Self::Call,
info: &<Self::Call as Dispatchable>::Info,
len: usize,
) -> Result<(), TransactionValidityError>
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. Read more
source§impl<T> TypeInfo for CheckNonce<T>
impl<T> TypeInfo for CheckNonce<T>
impl<T: Config> EncodeLike for CheckNonce<T>where
T::Nonce: HasCompact,
impl<T: Eq + Config> Eq for CheckNonce<T>
impl<T: Config> StructuralPartialEq for CheckNonce<T>
Auto Trait Implementations§
impl<T> Freeze for CheckNonce<T>
impl<T> RefUnwindSafe for CheckNonce<T>
impl<T> Send for CheckNonce<T>
impl<T> Sync for CheckNonce<T>
impl<T> Unpin for CheckNonce<T>
impl<T> UnwindSafe for CheckNonce<T>
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