sp_runtime::traits

Trait Extrinsic

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pub trait Extrinsic: Sized {
    type Call: TypeInfo;
    type SignaturePayload: SignaturePayload;

    // Provided methods
    fn is_signed(&self) -> Option<bool> { ... }
    fn new(
        _call: Self::Call,
        _signed_data: Option<Self::SignaturePayload>,
    ) -> Option<Self> { ... }
}
Expand description

Something that acts like an Extrinsic.

Required Associated Types§

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type Call: TypeInfo

The function call.

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type SignaturePayload: SignaturePayload

The payload we carry for signed extrinsics.

Usually it will contain a Signature and may include some additional data that are specific to signed extrinsics.

Provided Methods§

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fn is_signed(&self) -> Option<bool>

Is this Extrinsic signed? If no information are available about signed/unsigned, None should be returned.

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fn new( _call: Self::Call, _signed_data: Option<Self::SignaturePayload>, ) -> Option<Self>

Create new instance of the extrinsic.

Extrinsics can be split into:

  1. Inherents (no signature; created by validators during block production)
  2. Unsigned Transactions (no signature; represent “system calls” or other special kinds of calls) 3. Signed Transactions (with signature; a regular transactions with known origin)

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§