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#15 in #wrapped

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76,217 downloads per month
Used in 15 crates (via polkadot-sdk)

GPL-3.0-only

2.5MB
39K SLoC

Release

Polkadot SDK Stable 2412


lib.rs:

Skip Feeless Payment Pallet

This pallet allows runtimes that include it to skip payment of transaction fees for dispatchables marked by #[pallet::feeless_if].

Overview

It does this by wrapping an existing TransactionExtension implementation (e.g. pallet-transaction-payment) and checking if the dispatchable is feeless before applying the wrapped extension. If the dispatchable is indeed feeless, the extension is skipped and a custom event is emitted instead. Otherwise, the extension is applied as usual.

Integration

This pallet wraps an existing transaction payment pallet. This means you should both pallets in your construct_runtime macro and include this pallet's TransactionExtension (SkipCheckIfFeeless) that would accept the existing one as an argument.

Dependencies

~20–34MB
~577K SLoC