pub struct ChargeTransactionPayment<T: Config>(/* private fields */);
Expand description
Require the transactor pay for themselves and maybe include a tip to gain additional priority in the queue.
§Transaction Validity
This extension sets the priority
field of TransactionValidity
depending on the amount
of tip being paid per weight unit.
Operational transactions will receive an additional priority bump, so that they are normally considered before regular transactions.
Implementations§
source§impl<T: Config> ChargeTransactionPayment<T>where
T::RuntimeCall: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo>,
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: Send + Sync,
impl<T: Config> ChargeTransactionPayment<T>where
T::RuntimeCall: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo>,
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: Send + Sync,
sourcepub fn from(
fee: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance
) -> Self
pub fn from( fee: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance ) -> Self
utility constructor. Used only in client/factory code.
sourcepub fn tip(
&self
) -> <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance
pub fn tip( &self ) -> <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance
Returns the tip as being chosen by the transaction sender.
sourcepub fn get_priority(
info: &DispatchInfoOf<T::RuntimeCall>,
len: usize,
tip: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance,
final_fee: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance
) -> TransactionPriority
pub fn get_priority( info: &DispatchInfoOf<T::RuntimeCall>, len: usize, tip: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance, final_fee: <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance ) -> TransactionPriority
Get an appropriate priority for a transaction with the given DispatchInfo
, encoded length
and user-included tip.
The priority is based on the amount of tip
the user is willing to pay per unit of either
weight
or length
, depending which one is more limiting. For Operational
extrinsics
we add a “virtual tip” to the calculations.
The formula should simply be tip / bounded_{weight|length}
, but since we are using
integer division, we have no guarantees it’s going to give results in any reasonable
range (might simply end up being zero). Hence we use a scaling factor:
tip * (max_block_{weight|length} / bounded_{weight|length})
, since given current
state of-the-art blockchains, number of per-block transactions is expected to be in a
range reasonable enough to not saturate the Balance
type while multiplying by the tip.
Trait Implementations§
source§impl<T: Clone + Config> Clone for ChargeTransactionPayment<T>
impl<T: Clone + Config> Clone for ChargeTransactionPayment<T>
source§fn clone(&self) -> ChargeTransactionPayment<T>
fn clone(&self) -> ChargeTransactionPayment<T>
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl<T: Config> Debug for ChargeTransactionPayment<T>
impl<T: Config> Debug for ChargeTransactionPayment<T>
source§impl<T: Config> Decode for ChargeTransactionPayment<T>
impl<T: Config> Decode for ChargeTransactionPayment<T>
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>
§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,
§fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
fn skip<I>(input: &mut I) -> Result<(), Error>where
I: Input,
§fn encoded_fixed_size() -> Option<usize>
fn encoded_fixed_size() -> Option<usize>
source§impl<T: Config> Encode for ChargeTransactionPayment<T>
impl<T: Config> Encode for ChargeTransactionPayment<T>
source§fn size_hint(&self) -> usize
fn size_hint(&self) -> usize
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 )
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
§fn encoded_size(&self) -> usize
fn encoded_size(&self) -> usize
source§impl<T: PartialEq + Config> PartialEq for ChargeTransactionPayment<T>
impl<T: PartialEq + Config> PartialEq for ChargeTransactionPayment<T>
source§fn eq(&self, other: &ChargeTransactionPayment<T>) -> bool
fn eq(&self, other: &ChargeTransactionPayment<T>) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl<T: Config> SignedExtension for ChargeTransactionPayment<T>where
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: Send + Sync + From<u64>,
T::RuntimeCall: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo>,
impl<T: Config> SignedExtension for ChargeTransactionPayment<T>where
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: Send + Sync + From<u64>,
T::RuntimeCall: Dispatchable<Info = DispatchInfo, PostInfo = PostDispatchInfo>,
source§const IDENTIFIER: &'static str = "ChargeTransactionPayment"
const IDENTIFIER: &'static str = "ChargeTransactionPayment"
§type AdditionalSigned = ()
type AdditionalSigned = ()
additional_signed
function.§type Pre = (<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance, <ChargeTransactionPayment<T> as SignedExtension>::AccountId, <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::LiquidityInfo)
type Pre = (<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance, <ChargeTransactionPayment<T> as SignedExtension>::AccountId, <<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::LiquidityInfo)
source§fn additional_signed(&self) -> Result<(), TransactionValidityError>
fn additional_signed(&self) -> Result<(), TransactionValidityError>
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
source§fn pre_dispatch(
self,
who: &Self::AccountId,
call: &Self::Call,
info: &DispatchInfoOf<Self::Call>,
len: usize
) -> Result<Self::Pre, TransactionValidityError>
fn pre_dispatch( self, who: &Self::AccountId, call: &Self::Call, info: &DispatchInfoOf<Self::Call>, len: usize ) -> Result<Self::Pre, TransactionValidityError>
source§fn post_dispatch(
maybe_pre: Option<Self::Pre>,
info: &DispatchInfoOf<Self::Call>,
post_info: &PostDispatchInfoOf<Self::Call>,
len: usize,
_result: &DispatchResult
) -> Result<(), TransactionValidityError>
fn post_dispatch( maybe_pre: Option<Self::Pre>, info: &DispatchInfoOf<Self::Call>, post_info: &PostDispatchInfoOf<Self::Call>, len: usize, _result: &DispatchResult ) -> Result<(), TransactionValidityError>
source§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>
source§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>
source§impl<T> TypeInfo for ChargeTransactionPayment<T>where
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: HasCompact,
T: Config + 'static,
impl<T> TypeInfo for ChargeTransactionPayment<T>where
<<T as Config>::OnChargeTransaction as OnChargeTransaction<T>>::Balance: HasCompact,
T: Config + 'static,
impl<T: Config> EncodeLike for ChargeTransactionPayment<T>
impl<T: Eq + Config> Eq for ChargeTransactionPayment<T>
impl<T: Config> StructuralPartialEq for ChargeTransactionPayment<T>
Auto Trait Implementations§
impl<T> RefUnwindSafe for ChargeTransactionPayment<T>
impl<T> Send for ChargeTransactionPayment<T>
impl<T> Sync for ChargeTransactionPayment<T>
impl<T> Unpin for ChargeTransactionPayment<T>
impl<T> UnwindSafe for ChargeTransactionPayment<T>
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