Struct Checkpoint 

pub struct Checkpoint { /* private fields */ }

A checkpoint that captures the current oplog index and can revert execution back to it.

Implementations

impl Checkpoint

pub fn new() -> Self

Creates a new checkpoint at the current oplog index.

pub fn revert(&self) -> !

Reverts execution back to the checkpoint’s oplog index.

pub fn run_or_revert<T, E>(&self, f: impl FnOnce() -> Result<T, E>) -> T

Runs the given function, reverting to the checkpoint on error.

pub async fn run_or_revert_async<T, E, F: Future<Output = Result<T, E>>>( &self, f: impl FnOnce() -> F, ) -> T

Runs the given async function, reverting to the checkpoint on error.

pub fn assert_or_revert(&self, condition: bool)

Reverts to the checkpoint if the condition is false.

Trait Implementations

impl Default for Checkpoint

fn default() -> Self

Returns the “default value” for a type.