Struct sp_runtime::transaction_validity::ValidTransactionBuilder

source · [−]

pub struct ValidTransactionBuilder { /* private fields */ }

Expand description

ValidTransaction builder.

Allows to easily construct ValidTransaction and most importantly takes care of prefixing requires and provides tags to avoid conflicts.

Implementations

source

impl ValidTransactionBuilder

source

pub fn priority(self, priority: TransactionPriority) -> Self

Set the priority of a transaction.

Note that the final priority for FRAME is combined from all SignedExtensions. Most likely for unsigned transactions you want the priority to be higher than for regular transactions. We recommend exposing a base priority for unsigned transactions as a runtime module parameter, so that the runtime can tune inter-module priorities.

source

pub fn longevity(self, longevity: TransactionLongevity) -> Self

Set the longevity of a transaction.

By default the transaction will be considered valid forever and will not be revalidated by the transaction pool. It’s recommended though to set the longevity to a finite value though. If unsure, it’s also reasonable to expose this parameter via module configuration and let the runtime decide.

source

pub fn propagate(self, propagate: bool) -> Self

Set the propagate flag.

Set to false if the transaction is not meant to be gossiped to peers. Combined with TransactionSource::Local validation it can be used to have special kind of transactions that are only produced and included by the validator nodes.

source

pub fn and_requires(self, tag: impl Encode) -> Self

Add a TransactionTag to the set of required tags.

The tag will be encoded and prefixed with module prefix (if any). If you’d rather add a raw require tag, consider using #combine_with method.

source

pub fn and_provides(self, tag: impl Encode) -> Self

Add a TransactionTag to the set of provided tags.

The tag will be encoded and prefixed with module prefix (if any). If you’d rather add a raw require tag, consider using #combine_with method.

source

pub fn combine_with(self, validity: ValidTransaction) -> Self

Augment the builder with existing ValidTransaction.

This method does add the prefix to require or provides tags.

source

pub fn build(self) -> TransactionValidity

Finalize the builder and produce TransactionValidity.

Note the result will always be Ok. Use Into to produce ValidTransaction.

Trait Implementations

source

impl Clone for ValidTransactionBuilder

source

fn clone(&self) -> ValidTransactionBuilder

Returns a copy of the value. Read more

1.0.0 · source

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

source

impl Debug for ValidTransactionBuilder

source

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

source

impl Default for ValidTransactionBuilder

source

fn default() -> ValidTransactionBuilder

Returns the “default value” for a type. Read more

source

impl From<ValidTransactionBuilder> for TransactionValidity

source

fn from(builder: ValidTransactionBuilder) -> Self

Performs the conversion.

source

impl From<ValidTransactionBuilder> for ValidTransaction

source

fn from(builder: ValidTransactionBuilder) -> Self

Performs the conversion.

Auto Trait Implementations

impl RefUnwindSafe for ValidTransactionBuilder

impl Send for ValidTransactionBuilder

impl Sync for ValidTransactionBuilder

impl Unpin for ValidTransactionBuilder

impl UnwindSafe for ValidTransactionBuilder

Blanket Implementations

source

impl<T> Any for T where
T: 'static + ?Sized,

source

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

source

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

source

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

pub fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

source

impl<T> CheckedConversion for T

source

fn checked_from<T>(t: T) -> Option<Self> where
Self: TryFrom<T>,

Convert from a value of T into an equivalent instance of Option<Self>. Read more

source

fn checked_into<T>(self) -> Option<T> where
Self: TryInto<T>,

Consume self to return Some equivalent value of Option<T>. Read more

source

impl<T> Downcast for T where
T: Any,

source

pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘ
Notable traits for Box<W, Global>
`impl<W> Write for Box<W, Global> where W: Write + ?Sized, impl<R> Read for Box<R, Global> where R: Read + ?Sized, impl<I, A> Iterator for Box<I, A> where I: Iterator + ?Sized, A: Allocator, type Item = ::Item;impl<F, A> Future for Box<F, A> where F: Future + Unpin + ?Sized, A: Allocator + 'static, type Output = <F as Future>::Output;`

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait. Read more

source

pub fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait. Read more

source

pub fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s. Read more

source

pub fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s. Read more

source

impl<T> DowncastSync for T where
T: Any + Send + Sync,

source

pub fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send + 'static>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait. Read more

source