frame_plugins::rewards::payout

Enum Segment

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pub enum Segment<F>
where
    F: FixedPointNumber,
{
    Linear {
        start_x: F,
        end_x: F,
        start_y: F,
        end_y: F,
    },
    Curve {
        start_x: F,
        end_x: F,
        params: CurveParams<F>,
    },
}
Expand description

Defines a piecewise segment used in PiecewisePayout.

Concept: Segmented Function Composition

Each segment defines a function over a specific input interval [start_x, end_x]. The overall payout function is constructed by combining multiple segments.

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Linear

Linear segment using interpolation between two points.

Concept: Linear Interpolation

f(x) = y1 + ((x - x1) / (x2 - x1)) * (y2 - y1)

Both increasing (y2 > y1) and decreasing (y2 < y1) segments are supported for signed and unsigned types. The signed delta y2 - y1 is computed in FixedI128 via FixedSignedCast.

Fields

§start_x: F

Starting input value (x1)

§end_x: F

Ending input value (x2)

§start_y: F

Output at start_x (y1)

§end_y: F

Output at end_x (y2)

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Curve

Curve-based segment using a parameterized logistic function.

Concept: Parameterized Curve Segment

Uses CurveParams to evaluate:

f(x) = L / (1 + e^(-k*(x - x0)))

Works correctly for both signed and unsigned FixedPoint types.

Fields

§start_x: F

Starting input value for the segment

§end_x: F

Ending input value for the segment

§params: CurveParams<F>

Curve parameters defining shape and behavior

Auto Trait Implementations§

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impl<F> Freeze for Segment<F>
where F: Freeze,

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impl<F> RefUnwindSafe for Segment<F>
where F: RefUnwindSafe,

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impl<F> Send for Segment<F>
where F: Send,

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impl<F> Sync for Segment<F>
where F: Sync,

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impl<F> Unpin for Segment<F>
where F: Unpin,

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impl<F> UnwindSafe for Segment<F>
where F: UnwindSafe,

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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.

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type Level = LogLevel

The log level type.

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

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