Crate pallet_example_basic

Basic Example Pallet

A pallet demonstrating concepts, APIs and structures common to most FRAME runtimes.

This pallet serves as an example and is not meant to be used in production.

Made with Substrate, for Polkadot.

Pallet API

See the pallet module for more information about the interfaces this pallet exposes, including its configuration trait, dispatchables, storage items, events and errors.

Overview

This pallet provides basic examples of using:

• A custom weight calculator able to classify a call’s dispatch class (see: [frame_support::dispatch::DispatchClass])
• Pallet hooks to implement some custom logic that’s executed before and after a block is imported (see: [frame_support::traits::Hooks])
• Inherited weight annotation for pallet calls, used to create less repetition for calls that use the Config::WeightInfo trait to calculate call weights. This can also be overridden, as demonstrated by Call::set_dummy.
• A private function that performs a storage update.
• A simple signed extension implementation (see: [sp_runtime::traits::SignedExtension]) which increases the priority of the Call::set_dummy if it’s present and drops any transaction with an encoded length higher than 200 bytes.

Re-exports

• pub use pallet::*;
• pub use weights::*;

Modules

• pallet
  The pallet module in each FRAME pallet hosts the most important items needed to construct this pallet.
• weights
  Autogenerated weights for pallet_example_basic

Structs

• WatchDummy
  A simple signed extension that checks for the set_dummy call. In that case, it increases the priority and prints some log.