Struct pallet_transaction_payment::CurrencyAdapter

source · [−]

pub struct CurrencyAdapter<C, OU>(_);

Expand description

Implements the transaction payment for a module implementing the Currency trait (eg. the pallet_balances) using an unbalance handler (implementing OnUnbalanced).

Trait Implementations

impl<T, C, OU> OnChargeTransaction<T> for CurrencyAdapter<C, OU> where
    T: Config,
    T::TransactionByteFee: Get<<C as Currency<<T as Config>::AccountId>>::Balance>,
    C: Currency<<T as Config>::AccountId>,
    C::PositiveImbalance: Imbalance<<C as Currency<<T as Config>::AccountId>>::Balance, Opposite = C::NegativeImbalance>,
    C::NegativeImbalance: Imbalance<<C as Currency<<T as Config>::AccountId>>::Balance, Opposite = C::PositiveImbalance>,
    OU: OnUnbalanced<<C as Currency<<T as Config>::AccountId>>::NegativeImbalance>,

Default implementation for a Currency and an OnUnbalanced handler.

fn withdraw_fee(
    who: &T::AccountId,
    _call: &T::Call,
    _info: &DispatchInfoOf<T::Call>,
    fee: Self::Balance,
    tip: Self::Balance
) -> Result<Self::LiquidityInfo, TransactionValidityError>

Withdraw the predicted fee from the transaction origin.

Note: The fee already includes the tip.

fn correct_and_deposit_fee(
    who: &T::AccountId,
    _dispatch_info: &DispatchInfoOf<T::Call>,
    _post_info: &PostDispatchInfoOf<T::Call>,
    corrected_fee: Self::Balance,
    tip: Self::Balance,
    already_withdrawn: Self::LiquidityInfo
) -> Result<(), TransactionValidityError>

Hand the fee and the tip over to the [OnUnbalanced] implementation. Since the predicted fee might have been too high, parts of the fee may be refunded.

Note: The fee already includes the tip.

type LiquidityInfo = Option<<C as Currency<<T as Config>::AccountId>>::NegativeImbalance>

type Balance = <C as Currency<<T as Config>::AccountId>>::Balance

The underlying integer type in which fees are calculated.

Auto Trait Implementations

impl<C, OU> RefUnwindSafe for CurrencyAdapter<C, OU> where
C: RefUnwindSafe,
OU: RefUnwindSafe,

impl<C, OU> Send for CurrencyAdapter<C, OU> where
C: Send,
OU: Send,

impl<C, OU> Sync for CurrencyAdapter<C, OU> where
C: Sync,
OU: Sync,

impl<C, OU> Unpin for CurrencyAdapter<C, OU> where
C: Unpin,
OU: Unpin,

impl<C, OU> UnwindSafe for CurrencyAdapter<C, OU> where
C: UnwindSafe,
OU: UnwindSafe,

Blanket Implementations

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CheckedConversion for T

fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

impl<T> From<T> for T

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

pub fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> IsType<T> for T

pub fn from_ref(t: &T) -> &T

Cast reference.

pub fn into_ref(&self) -> &T

Cast reference.

pub fn from_mut(t: &mut T) -> &mut T

Cast mutable reference.

pub fn into_mut(&mut self) -> &mut T

Cast mutable reference.

impl<T, Outer> IsWrappedBy<Outer> for T where
Outer: AsRef<T> + AsMut<T> + From<T>,
T: From<Outer>,

pub fn from_ref(outer: &Outer) -> &T

Get a reference to the inner from the outer.

pub fn from_mut(outer: &mut Outer) -> &mut T

Get a mutable reference to the inner from the outer.

impl<T> Same<T> for T

type Output = T

Should always be Self

impl<T> SaturatedConversion for T

fn saturated_from<T>(t: T) -> Self where
Self: UniqueSaturatedFrom<T>,

Convert from a value of T into an equivalent instance of Self. Read more

fn saturated_into<T>(self) -> T where
Self: UniqueSaturatedInto<T>,

Consume self to return an equivalent value of T. Read more

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<S, T> UncheckedInto<T> for S where
T: UncheckedFrom<S>,

pub fn unchecked_into(self) -> T

The counterpart to unchecked_from.

impl<T, S> UniqueSaturatedInto<T> for S where
T: Bounded,
S: TryInto<T>,

pub fn unique_saturated_into(self) -> T

Consume self to return an equivalent value of T.

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

pub fn vzip(self) -> V

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