Struct DefaultExtrinsicParamsBuilder 

pub struct DefaultExtrinsicParamsBuilder<T: Config> { /* private fields */ }

A builder that outputs the set of super::ExtrinsicParams::Params required for DefaultExtrinsicParams. This may expose methods that aren’t applicable to the current chain; such values will simply be ignored if so.

Implementations

impl<T: Config> DefaultExtrinsicParamsBuilder<T>

pub fn new() -> Self

Configure new extrinsic params. We default to providing no tip and using an immortal transaction unless otherwise configured

pub fn immortal(self) -> Self

Make the transaction immortal, meaning it will never expire. This means that it could, in theory, be pending for a long time and only be included many blocks into the future.

pub fn mortal(self, for_n_blocks: u64) -> Self

Make the transaction mortal, given a number of blocks it will be mortal for from the current block at the time of submission.

Warning

This will ultimately return an error if used for creating extrinsic offline, because we need additional information in order to set the mortality properly.

When creating offline transactions, you must use Self::mortal_from_unchecked instead to set the mortality. This provides all of the necessary information which we must otherwise be online in order to obtain.

pub fn mortal_from_unchecked( self, for_n_blocks: u64, from_block_n: u64, from_block_hash: HashFor<T>, ) -> Self

Configure a transaction that will be mortal for the number of blocks given, and from the block details provided. Prefer to use Self::mortal() where possible, which prevents the block number and hash from being misaligned.

pub fn nonce(self, nonce: u64) -> Self

Provide a specific nonce for the submitter of the extrinsic

pub fn tip(self, tip: u128) -> Self

Provide a tip to the block author in the chain’s native token.

pub fn tip_of(self, tip: u128, asset_id: T::AssetId) -> Self

Provide a tip to the block author using the token denominated by the asset_id provided. This is not applicable on chains which don’t use the ChargeAssetTxPayment signed extension; in this case, no tip will be given.

pub fn build(self) -> <DefaultExtrinsicParams<T> as ExtrinsicParams<T>>::Params

Build the extrinsic parameters.

Trait Implementations

impl<T: Config> Default for DefaultExtrinsicParamsBuilder<T>

fn default() -> Self

Returns the “default value” for a type.