Struct MemtableLocalStateStore

pub struct MemtableLocalStateStore<S: StateStoreWrite + StateStoreRead> {
    mem_table: MemTable,
    inner: S,
    epoch: Option<u64>,
    table_id: TableId,
    op_consistency_level: OpConsistencyLevel,
    table_option: TableOption,
    vnodes: Arc<Bitmap>,
}

Fields

mem_table: MemTable

inner: S

epoch: Option<u64>

table_id: TableId

op_consistency_level: OpConsistencyLevel

table_option: TableOption

vnodes: Arc<Bitmap>

Implementations

impl<S: StateStoreWrite + StateStoreRead> MemtableLocalStateStore<S>

pub fn new(inner: S, option: NewLocalOptions) -> Self

pub fn inner(&self) -> &S

Trait Implementations

impl<S: StateStoreWrite + StateStoreRead> LocalStateStore for MemtableLocalStateStore<S>

type Iter<'a> = impl StateStoreIter + 'a

type RevIter<'a> = impl StateStoreIter + 'a

async fn get( &self, key: TableKey<Bytes>, read_options: ReadOptions, ) -> StorageResult<Option<Bytes>>

Point gets a value from the state store. The result is based on the latest written snapshot.

fn iter( &self, key_range: TableKeyRange, read_options: ReadOptions, ) -> impl Future<Output = StorageResult<Self::Iter<'_>>> + Send + '_

Opens and returns an iterator for given prefix_hint and full_key_range Internally, prefix_hint will be used to for checking bloom_filter and full_key_range used for iter. (if the prefix_hint not None, it should be be included in key_range) The returned iterator will iterate data based on the latest written snapshot.

fn rev_iter( &self, key_range: TableKeyRange, read_options: ReadOptions, ) -> impl Future<Output = StorageResult<Self::RevIter<'_>>> + Send + '_

fn insert( &mut self, key: TableKey<Bytes>, new_val: Bytes, old_val: Option<Bytes>, ) -> StorageResult<()>

Inserts a key-value entry associated with a given epoch into the state store.

fn delete(&mut self, key: TableKey<Bytes>, old_val: Bytes) -> StorageResult<()>

Deletes a key-value entry from the state store. Only the key-value entry with epoch smaller than the given epoch will be deleted.

async fn flush(&mut self) -> StorageResult<usize>

fn epoch(&self) -> u64

fn is_dirty(&self) -> bool

async fn init(&mut self, options: InitOptions) -> StorageResult<()>

Initializes the state store with given epoch pair. Typically we will use epoch.curr as the initialized epoch, Since state table will begin as empty. In some cases like replicated state table, state table may not be empty initially, as such we need to wait for epoch.prev checkpoint to complete, hence this interface is made async.

fn seal_current_epoch(&mut self, next_epoch: u64, opts: SealCurrentEpochOptions)

Updates the monotonically increasing write epoch to new_epoch. All writes after this function is called will be tagged with new_epoch. In other words, the previous write epoch is sealed.

async fn try_flush(&mut self) -> StorageResult<()>

fn update_vnode_bitmap(&mut self, vnodes: Arc<Bitmap>) -> Arc<Bitmap>

fn get_table_watermark(&self, _vnode: VirtualNode) -> Option<Bytes>

Get last persisted watermark for a given vnode.