Struct frame_support::pallet_prelude::ValidTransaction[−][src]

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

impl ValidTransaction

pub fn with_tag_prefix(prefix: &'static str) -> ValidTransactionBuilder

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.

pub fn combine_with(self, other: ValidTransaction) -> ValidTransaction

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

impl Clone for ValidTransaction

pub fn clone(&self) -> ValidTransaction

Returns a copy of the value. Read more

1.0.0[src]

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

Performs copy-assignment from source. Read more

impl Debug for ValidTransaction

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

Formats the value using the given formatter. Read more

impl Decode for ValidTransaction

pub fn decode<__CodecInputEdqy>(
    __codec_input_edqy: &mut __CodecInputEdqy
) -> Result<ValidTransaction, Error> where
    __CodecInputEdqy: Input,

Attempt to deserialise the value from input.

fn skip<I>(input: &mut I) -> Result<(), Error> where
    I: Input,

Attempt to skip the encoded value from input. Read more

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type. Read more

impl Default for ValidTransaction

pub fn default() -> ValidTransaction

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

impl Encode for ValidTransaction

pub fn encode_to<__CodecOutputEdqy>(
    &self, 
    __codec_dest_edqy: &mut __CodecOutputEdqy
) where
    __CodecOutputEdqy: Output + ?Sized,

Convert self to a slice and append it to the destination.

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding. Read more

fn encode(&self) -> Vec<u8, Global>ⓘNotable traits for Vec<u8, A>
impl<A> Write for Vec<u8, A> where
    A: Allocator,

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R where
    F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size. Read more

impl From<ValidTransactionBuilder> for ValidTransaction

pub fn from(builder: ValidTransactionBuilder) -> ValidTransaction

Performs the conversion.

impl PartialEq<ValidTransaction> for ValidTransaction

pub fn eq(&self, other: &ValidTransaction) -> bool

This method tests for self and other values to be equal, and is used by ==. Read more

pub fn ne(&self, other: &ValidTransaction) -> bool

This method tests for !=.

impl EncodeLike<ValidTransaction> for ValidTransaction

impl Eq for ValidTransaction

impl StructuralEq for ValidTransaction

impl StructuralPartialEq for ValidTransaction

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

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

pub fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

pub fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> CheckedConversion for T

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

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    Self: TryInto<T>,

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

impl<T> Clear for T where
    T: Default + Eq + PartialEq<T>,

pub fn is_clear(&self) -> bool

True iff no bits are set.

pub fn clear() -> T

Return the value of Self that is clear.

impl<T> DecodeAll for T where
    T: Decode,

pub fn decode_all(input: &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

impl<T> DecodeLimit for T where
    T: Decode,

pub fn decode_all_with_depth_limit(limit: u32, input: &[u8]) -> Result<T, Error>

Decode Self and consume all of the given input data. Read more

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Decode Self with the given maximum recursion depth. Read more

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    T: Any,

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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

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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

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

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Performs the conversion.

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    A: Allocator,

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fn saturated_from<T>(t: T) -> Self where
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🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

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