KvState

pulse_core

Trait KvState 

Source 
pub trait KvState: Send + Sync {
    // Required methods
    fn get<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
    ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<u8>>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn put<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
        value: Vec<u8>,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn delete<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn iter_prefix<'life0, 'life1, 'async_trait>(
        &'life0 self,
        prefix: Option<&'life1 [u8]>,
    ) -> Pin<Box<dyn Future<Output = Result<Vec<(Vec<u8>, Vec<u8>)>>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn snapshot<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = Result<SnapshotId>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn restore<'life0, 'async_trait>(
        &'life0 self,
        snapshot: SnapshotId,
    ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}
Expand description

Key-Value state abstraction for stateful operators.

Required Methods§

Source

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<u8>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn put<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], value: Vec<u8>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 [u8], ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Source

fn iter_prefix<'life0, 'life1, 'async_trait>( &'life0 self, prefix: Option<&'life1 [u8]>, ) -> Pin<Box<dyn Future<Output = Result<Vec<(Vec<u8>, Vec<u8>)>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Returns all key/value pairs, optionally filtered by a prefix.

Source

fn snapshot<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<SnapshotId>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Creates a point-in-time snapshot of the current state and returns its id.

Source

fn restore<'life0, 'async_trait>( &'life0 self, snapshot: SnapshotId, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Restores the state to a previously created snapshot id.

Implementors§