Files
pezkuwi-subxt/substrate/frame/executive
Igor Matuszewski 028f3d2674 Merge 2.0.1 backport branch into mainline master (#7842)
* Backport paritytech/substrate#7381

* Bring back genesis storage build in aura/timestamp

To not change spec version, see
https://github.com/paritytech/substrate/pull/7686#discussion_r540032743

* Backport paritytech/substrate#7238

* Backport paritytech/substrate#7395

* Bump impl_version

* Fix UI tests and bump trybuild dep

See https://github.com/rust-lang/rust/pull/73996

Backports:
https://github.com/paritytech/substrate/pull/7764
https://github.com/paritytech/substrate/pull/7656

* Partially backport paritytech/substrate#7838

* Release frame-support with a dep compilation fix

* Bump patch level for remaining crates

This is done because at the time of writing cargo-unleash does not fully
support partial workspace publishing and mixes both local and crates.io
versions of the packages, leading to errors in the release check workflow.

* Backport paritytech/substrate#7854

...to fix compilation error when using futures-* v0.3.9.

* Adding Changelog  entry for patch release

Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Benjamin Kampmann <ben@parity.io>
2021-01-11 11:24:29 +01:00
..
2021-01-04 09:03:13 +00:00
2020-09-22 13:38:23 +00:00

Executive Module

The Executive module acts as the orchestration layer for the runtime. It dispatches incoming extrinsic calls to the respective modules in the runtime.

Overview

The executive module is not a typical pallet providing functionality around a specific feature. It is a cross-cutting framework component for the FRAME. It works in conjunction with the FRAME System module to perform these cross-cutting functions.

The Executive module provides functions to:

  • Check transaction validity.
  • Initialize a block.
  • Apply extrinsics.
  • Execute a block.
  • Finalize a block.
  • Start an off-chain worker.

Implementations

The Executive module provides the following implementations:

  • ExecuteBlock: Trait that can be used to execute a block.
  • Executive: Type that can be used to make the FRAME available from the runtime.

Usage

The default Substrate node template declares the Executive type in its library.

Example

Executive type declaration from the node template.

#
/// Executive: handles dispatch to the various modules.
pub type Executive = executive::Executive<Runtime, Block, Context, Runtime, AllModules>;

Custom OnRuntimeUpgrade logic

You can add custom logic that should be called in your runtime on a runtime upgrade. This is done by setting an optional generic parameter. The custom logic will be called before the on runtime upgrade logic of all modules is called.

#
struct CustomOnRuntimeUpgrade;
impl frame_support::traits::OnRuntimeUpgrade for CustomOnRuntimeUpgrade {
    fn on_runtime_upgrade() -> frame_support::weights::Weight {
        // Do whatever you want.
        0
    }
}

pub type Executive = executive::Executive<Runtime, Block, Context, Runtime, AllModules, CustomOnRuntimeUpgrade>;

License: Apache-2.0