Struct Checkpoint 

pub struct Checkpoint<S: Clone> {
    pub version: u32,
    pub timestamp: i64,
    pub state: S,
}

A versioned, timestamped snapshot of some Clone-able engine state S.

Fields

version: u32

Monotonically increasing checkpoint version, incremented by the caller on each capture. Lets consumers detect stale/out-of-order restores.

timestamp: i64

The bar timestamp the state reflects (i.e. state after processing this bar).

state: S

Implementations

impl<S: Clone> Checkpoint<S>

pub fn capture(state: &S, timestamp: i64, version: u32) -> Self

Captures a snapshot of state at timestamp tagged with version.

pub fn restore_into(&self, target: &mut S)

Overwrites target with this checkpoint’s state.

Trait Implementations

impl<S: Clone + Clone> Clone for Checkpoint<S>

fn clone(&self) -> Checkpoint<S>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<S: Debug + Clone> Debug for Checkpoint<S>

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

Formats the value using the given formatter.

impl<'de, S> Deserialize<'de> for Checkpoint<S>

where S: Deserialize<'de> + Clone,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<S: PartialEq + Clone> PartialEq for Checkpoint<S>

fn eq(&self, other: &Checkpoint<S>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<S> Serialize for Checkpoint<S>

where S: Serialize + Clone,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<S: PartialEq + Clone> StructuralPartialEq for Checkpoint<S>