Struct ConsistencyTokenCell 

pub struct ConsistencyTokenCell(/* private fields */);

A consistency token in memory: what a client holds by default. Give one in an Arc to several clients for them to share it.

Implementations

impl ConsistencyTokenCell

pub fn new() -> Self

A cell holding no token.

Trait Implementations

impl ConsistencyTokenStore for ConsistencyTokenCell

fn get(&self) -> String

The token held; empty when none is.

fn set(&self, token: String)

Replaces the token held with token.

fn remove(&self, refused: &str)

Forgets refused, a token the API refused to read, if it is still the one held; a token that replaced it in the meantime stays. The default reads and then sets the token, so it can lose a token set in between; a store that can do it at once should.

fn replace(&self, presented: &str, answered: String)

Replaces the token held with answered, the token the answer to a call that presented presented (empty for none) carried. A store that holds a token other than presented by then was written by a concurrent call in between, and may keep one or the other as it sees fit; the default sets answered, so the token answered last is kept.

impl Debug for ConsistencyTokenCell

The token itself is left out: it is a credential of sorts, naming what the client wrote.

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

Formats the value using the given formatter.

impl Default for ConsistencyTokenCell

fn default() -> Self

Returns the “default value” for a type.