frame_plugins::rewards::payout

Struct FixedAnnualPayout

Source 
pub struct FixedAnnualPayout;
Expand description

The FixedAnnualPayout model computes rewards using a per-period rate derived from an annual percentage rate (APR).

Concept: APR to Periodic Yield Conversion

§Formula

EPR = (1 + APR)^(1 / n) - 1
reward = x * EPR

§Characteristics:

  • Time-aware scaling: Converts annual rate into per-period rewards
  • Compounding-consistent: Preserves APR across discrete intervals
  • Deterministic: Same input and parameters yield identical results
  • Fixed-point safe: Uses fixed-point exponentiation
  • Context-driven: Controlled via FixedAnnualConfig

§Applications:

  • Staking reward systems with APR targets
  • Financial yield calculations
  • Periodic emission schedules
  • Interest-based incentive models

§Use Cases

  • Converting annual rewards into per-block or per-era payouts
  • Maintaining consistent yield across different time granularities
  • Financial modeling of compounding returns

§Example

ⓘ
let config = FixedAnnualConfig {
    apr: FixedU128::from_rational(12, 100), // 12% APR
    time_count: 12u128, // monthly payouts
};

let reward = FixedAnnualPayout::compute(1000u128, Some(config));
// reward ~= 1000 * ((1.12)^(1/12) - 1)

Trait Implementations§

Source§

impl Debug for FixedAnnualPayout

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Default for FixedAnnualPayout

Source§

fn default() -> FixedAnnualPayout

Returns the “default value” for a type. Read more
Source§

impl<FixedPoint, Asset> PurePluginModel<Asset, FixedAnnualConfig<Asset, FixedPoint>, Asset> for FixedAnnualPayout
where Asset: Copy + IntegerToFixed + FixedForInteger<FixedPoint = FixedPoint>, FixedPoint: FixedPointNumber + FixedOp,

Source§

fn compute( &self, input: Asset, context: &FixedAnnualConfig<Asset, FixedPoint>, ) -> Asset

Computes the model’s output for a given immutable input and context.

Auto Trait Implementations§

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

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
Source§

impl<T> From<T> for T

Source§

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
Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
§

impl<T, U> IntoKey<U> for T
where U: FromKey<T>,

§

fn into_key(self) -> U

Source§

impl<T, U, Tag> IntoTag<U, Tag> for T
where U: FromTag<T, Tag>, Tag: DiscriminantTag,

Source§

fn into_tag(self) -> U

§

impl<Src, Dest> IntoTuple<Dest> for Src
where Dest: FromTuple<Src>,

§

fn into_tuple(self) -> Dest

§

impl<T> IsType<T> for T

§

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

Cast reference.
§

fn into_ref(&self) -> &T

Cast reference.
§

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

Cast mutable reference.
§

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>,

§

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

Get a reference to the inner from the outer.

§

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

Get a mutable reference to the inner from the outer.

Source§

impl<T, Time> Logging<Time> for T
where Time: Time,

Source§

const FALLBACK_TARGET: &'static str = "routine"

Default logging target if none is provided.

Most routines, especially offchain workers or background tasks, use this target for simplicity.

It allows a consistent place to look for routine logs without requiring every call to specify a target.

Note: This target is only a conveninence and may be somewhat vague. To ensure errors can still be traced accurately, the logged messages should include additional metadata (e.g., module name, error index, or contextual info) so that the source of the error can be identified even if the target is generic.

Source§

type Logger = DispatchError

The type taken and returned for logging.

We simply return the same [DispatchError] that was logged, so logging does not change control flow or error propagation.

DispatchError is used because in Substrate it encompasses all runtime errors - including module errors, token errors, arithmetic issues, and transactional boundaries - making it the universal substrate-side error representation.

Source§

type Level = LogLevel

The log level type.

We use the LogLevel enum to standardize severity levels (Info, Warn, Error, Debug) across all routine logs.

Source§

fn log( level: <T as Logging<Time>>::Level, err: &<T as Logging<Time>>::Logger, timestamp: Time, target: Option<&str>, fmt: Option<fn(Time, &<T as Logging<Time>>::Level, &str, &str) -> String>, ) -> <T as Logging<Time>>::Logger

Core logging function that all helpers delegate to. Read more
Source§

fn info( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
where Self: Sized,

Logs an info-level message. Read more
Source§

fn warn( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
where Self: Sized,

Logs a warning-level message. Read more
Source§

fn error( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
where Self: Sized,

Logs an error-level message. Read more
Source§

fn debug( err: &Self::Logger, timestamp: Timestamp, target: Option<&str>, fmt: Option<fn(Timestamp, &Self::Level, &str, &str) -> String>, ) -> Self::Logger
where Self: Sized,

Logs a debug-level message. Read more
Source§

impl<T> Same for T

Source§

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
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

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

Performs the conversion.
§

impl<T, U> TryIntoKey<U> for T
where U: TryFromKey<T>,

§

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

§

fn try_into_key(self) -> Result<U, <U as TryFromKey<T>>::Error>

§

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

§

fn unchecked_into(self) -> T

The counterpart to unchecked_from.
§

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

§

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>,

§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
Source§

impl<Provider, Discriminant, T> DelegateVirtualDynBound<Provider, Discriminant> for T
where Provider: VirtualDynBound<Discriminant>, Discriminant: DiscriminantTag,

Source§

impl<Provider, Discriminant, T> DelegateVirtualStaticBound<Provider, Discriminant> for T
where Provider: VirtualStaticBound<Discriminant>, Discriminant: DiscriminantTag,

§

impl<T> JsonSchemaMaybe for T

§

impl<T> MaybeDebug for T
where T: Debug,

§

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