Release

Polkadot SDK Stable 2412

lib.rs:

Asset Rate Pallet

• Config
• Call

Overview

The AssetRate pallet provides means of setting conversion rates for some asset to native balance.

The supported dispatchable functions are documented in the Call enum.

Terminology

• Asset balance: The balance type of an arbitrary asset. The network might only know about the identifier of the asset and nothing more.
• Native balance: The balance type of the network's native currency.

Goals

The asset-rate system in Substrate is designed to make the following possible:

• Providing a soft conversion for the balance of supported assets to a default asset class.
• Updating existing conversion rates.

Interface

Permissioned Functions

• create: Creates a new asset conversion rate.
• remove: Removes an existing asset conversion rate.
• update: Overwrites an existing assert conversion rate.

Please refer to the Call enum and its associated variants for documentation on each function.

Assumptions

• Conversion rates are only used as estimates, and are not designed to be precise or closely tracking real world values.
• All conversion rates reflect the ration of some asset to native, e.g. native = asset * rate.