io.ray.streaming.state.strategy

Class StateStoreManagerProxy<V>

java.lang.Object

io.ray.streaming.state.strategy.StateStoreManagerProxy<V>

All Implemented Interfaces:

StateStoreManager

Direct Known Subclasses:

ListStateStoreManagerProxy, MapStateStoreManagerProxy, ValueStateStoreManagerProxy

public abstract class StateStoreManagerProxy<V>
extends Object
implements StateStoreManager

This class support ITransactionState.

Based on the given StorageMode, different implementation instance of the AbstractStateStrategy class will be created. All method calls will be delegated to the strategy instance.

Field Summary

Fields

Modifier and Type	Field and Description
protected AbstractStateStoreManager<V>	stateStrategy

Constructor Summary

Constructors

Constructor and Description
StateStoreManagerProxy(AbstractKeyStateBackend keyStateBackend, AbstractStateDescriptor stateDescriptor)

Method Summary

Modifier and Type	Method and Description
void	ackCommit(long checkpointId, long timeStamp) The ackCommit must be called after commit in the same thread.
void	close()
void	commit(long checkpointId) The commit can be used in another thread to reach async state commit.
void	finish(long checkpointId) The finish method is used when the batched data is all saved in state.
V	get(String key)
void	put(String key, V value)
void	rollBack(long checkpointId) The rollback method is used for recovering the checkpoint.
protected void	setKeyGroupIndex(int index)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

stateStrategy

protected final AbstractStateStoreManager<V> stateStrategy

Constructor Detail

StateStoreManagerProxy

public StateStoreManagerProxy(AbstractKeyStateBackend keyStateBackend,
                              AbstractStateDescriptor stateDescriptor)

Method Detail

setKeyGroupIndex

protected void setKeyGroupIndex(int index)

finish

public void finish(long checkpointId)

Description copied from interface: StateStoreManager

The finish method is used when the batched data is all saved in state. Normally, serialization job is done here.

Specified by:

finish in interface StateStoreManager

commit

public void commit(long checkpointId)

The commit can be used in another thread to reach async state commit.

Specified by:

commit in interface StateStoreManager

ackCommit

public void ackCommit(long checkpointId,
                      long timeStamp)

The ackCommit must be called after commit in the same thread.

Specified by:

ackCommit in interface StateStoreManager

rollBack

public void rollBack(long checkpointId)

Description copied from interface: StateStoreManager

The rollback method is used for recovering the checkpoint.

Specified by:

rollBack in interface StateStoreManager

close

public void close()

get

public V get(String key)

put

public void put(String key,
                V value)