Struct frame_support::pallet_prelude::ValidTransaction
source · [−]pub struct ValidTransaction {
pub priority: u64,
pub requires: Vec<Vec<u8, Global>, Global>,
pub provides: Vec<Vec<u8, Global>, Global>,
pub longevity: u64,
pub propagate: bool,
}
Expand description
Information concerning a valid transaction.
Fields
priority: u64
Priority of the transaction.
Priority determines the ordering of two transactions that have all their dependencies (required tags) satisfied.
requires: Vec<Vec<u8, Global>, Global>
Transaction dependencies
A non-empty list signifies that some other transactions which provide given tags are required to be included before that one.
provides: Vec<Vec<u8, Global>, Global>
Provided tags
A list of tags this transaction provides. Successfully importing the transaction will enable other transactions that depend on (require) those tags to be included as well. Provided and required tags allow Substrate to build a dependency graph of transactions and import them in the right (linear) order.
longevity: u64
Transaction longevity
Longevity describes minimum number of blocks the validity is correct. After this period transaction should be removed from the pool or revalidated.
propagate: bool
A flag indicating if the transaction should be propagated to other peers.
By setting false
here the transaction will still be considered for
including in blocks that are authored on the current node, but will
never be sent to other peers.
Implementations
Initiate ValidTransaction
builder object with a particular prefix for tags.
To avoid conflicts between different parts in runtime it’s recommended to build requires
and provides
tags with a unique prefix.
Combine two instances into one, as a best effort. This will take the superset of each of the
provides
and requires
tags, it will sum the priorities, take the minimum longevity and
the logic And of the propagate flags.
Trait Implementations
Returns the “default value” for a type. Read more
Performs the conversion.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Auto Trait Implementations
impl RefUnwindSafe for ValidTransaction
impl Send for ValidTransaction
impl Sync for ValidTransaction
impl Unpin for ValidTransaction
impl UnwindSafe for ValidTransaction
Blanket Implementations
Mutably borrows from an owned value. Read more
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, 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 = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;
pub fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, 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 = <I as Iterator>::Item;impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;
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 = <I as Iterator>::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
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
Convert &Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s. Read more
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
The counterpart to unchecked_from
.
Consume self to return an equivalent value of T
.
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more