Trait KvBackend

pub trait KvBackend: TxnService
where
    Self::Error: ErrorExt,
{
    // Required methods
    fn name(&self) -> &str;
    fn as_any(&self) -> &dyn Any;
    fn range<'life0, 'async_trait>(
        &'life0 self,
        req: RangeRequest,
    ) -> Pin<Box<dyn Future<Output = Result<RangeResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn put<'life0, 'async_trait>(
        &'life0 self,
        req: PutRequest,
    ) -> Pin<Box<dyn Future<Output = Result<PutResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn batch_put<'life0, 'async_trait>(
        &'life0 self,
        req: BatchPutRequest,
    ) -> Pin<Box<dyn Future<Output = Result<BatchPutResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn batch_get<'life0, 'async_trait>(
        &'life0 self,
        req: BatchGetRequest,
    ) -> Pin<Box<dyn Future<Output = Result<BatchGetResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn delete_range<'life0, 'async_trait>(
        &'life0 self,
        req: DeleteRangeRequest,
    ) -> Pin<Box<dyn Future<Output = Result<DeleteRangeResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn batch_delete<'life0, 'async_trait>(
        &'life0 self,
        req: BatchDeleteRequest,
    ) -> Pin<Box<dyn Future<Output = Result<BatchDeleteResponse, Self::Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;

    // Provided methods
    fn get<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
    ) -> Pin<Box<dyn Future<Output = Result<Option<KeyValue>, Self::Error>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait { ... }
    fn compare_and_put<'life0, 'async_trait>(
        &'life0 self,
        req: CompareAndPutRequest,
    ) -> Pin<Box<dyn Future<Output = Result<CompareAndPutResponse, Self::Error>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait { ... }
    fn put_conditionally<'life0, 'async_trait>(
        &'life0 self,
        key: Vec<u8>,
        value: Vec<u8>,
        if_not_exists: bool,
    ) -> Pin<Box<dyn Future<Output = Result<bool, Self::Error>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait { ... }
    fn exists<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
    ) -> Pin<Box<dyn Future<Output = Result<bool, Self::Error>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait { ... }
    fn delete<'life0, 'life1, 'async_trait>(
        &'life0 self,
        key: &'life1 [u8],
        prev_kv: bool,
    ) -> Pin<Box<dyn Future<Output = Result<Option<KeyValue>, Self::Error>> + Send + 'async_trait>>
       where Self: Sync + 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait { ... }
}

Required Methods

fn name(&self) -> &str

fn as_any(&self) -> &dyn Any

fn range<'life0, 'async_trait>( &'life0 self, req: RangeRequest, ) -> Pin<Box<dyn Future<Output = Result<RangeResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn put<'life0, 'async_trait>( &'life0 self, req: PutRequest, ) -> Pin<Box<dyn Future<Output = Result<PutResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn batch_put<'life0, 'async_trait>( &'life0 self, req: BatchPutRequest, ) -> Pin<Box<dyn Future<Output = Result<BatchPutResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn batch_get<'life0, 'async_trait>( &'life0 self, req: BatchGetRequest, ) -> Pin<Box<dyn Future<Output = Result<BatchGetResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn delete_range<'life0, 'async_trait>( &'life0 self, req: DeleteRangeRequest, ) -> Pin<Box<dyn Future<Output = Result<DeleteRangeResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn batch_delete<'life0, 'async_trait>( &'life0 self, req: BatchDeleteRequest, ) -> Pin<Box<dyn Future<Output = Result<BatchDeleteResponse, Self::Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Provided Methods

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

where Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

fn compare_and_put<'life0, 'async_trait>( &'life0 self, req: CompareAndPutRequest, ) -> Pin<Box<dyn Future<Output = Result<CompareAndPutResponse, Self::Error>> + Send + 'async_trait>>

where Self: Sync + 'async_trait, 'life0: 'async_trait,

CAS: Compares the value at the key with the given value, and if they are equal, puts the new value at the key.

fn put_conditionally<'life0, 'async_trait>( &'life0 self, key: Vec<u8>, value: Vec<u8>, if_not_exists: bool, ) -> Pin<Box<dyn Future<Output = Result<bool, Self::Error>> + Send + 'async_trait>>

where Self: Sync + 'async_trait, 'life0: 'async_trait,

Puts a value at a key. If if_not_exists is true, the operation ensures the key does not exist before applying the PUT operation. Otherwise, it simply applies the PUT operation without checking for the key’s existence.

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

where Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check if the key exists, not returning the value. If the value is large, this method is more efficient than get.

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

where Self: Sync + 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Returns previous key-value pair if prev_kv is true.

Implementors

impl KvBackend for ChrootKvBackend

impl KvBackend for EtcdStore

impl<T: ErrorExt + Send + Sync + 'static> KvBackend for MemoryKvBackend<T>