Runtime Modules shared primitive types.

License: Apache-2.0

Release

Polkadot SDK stable2409

lib.rs:

Substrate Runtime Primitives.

This crate, among other things, contains a large library of types and utilities that are used in the Substrate runtime, but are not particularly FRAME-oriented.

Block, Header and Extrinsics

Most notable, this crate contains some of the types and trait that enable important communication between the client and the runtime. This includes:

• A set of traits to declare what any block/header/extrinsic type should provide.
  • traits::Block, traits::Header, traits::Extrinsic
• A set of types that implement these traits, whilst still providing a high degree of configurability via generics.
  • generic::Block, generic::Header, generic::UncheckedExtrinsic and generic::CheckedExtrinsic

Runtime API Types

This crate also contains some types that are often used in conjuncture with Runtime APIs. Most notable:

• ApplyExtrinsicResult, and DispatchOutcome, which dictate how the client and runtime communicate about the success or failure of an extrinsic.
• transaction_validity, which dictates how the client and runtime communicate about the validity of an extrinsic while still in the transaction-queue.