org.apache.pulsar.functions.instance.state

Class BKStateStoreProviderImpl

java.lang.Object

org.apache.pulsar.functions.instance.state.BKStateStoreProviderImpl

All Implemented Interfaces:

AutoCloseable, StateStoreProvider

public class BKStateStoreProviderImpl
extends Object
implements StateStoreProvider

The state store provider that provides bookkeeper table backed state stores.

Field Summary

Fields

Modifier and Type	Field and Description
static String	STATE_STORAGE_SERVICE_URL

Fields inherited from interface org.apache.pulsar.functions.instance.state.StateStoreProvider

NULL

Constructor Summary

Constructors

Constructor and Description
BKStateStoreProviderImpl()

Method Summary

Modifier and Type	Method and Description
void	close()
<S extends StateStore> S	getStateStore(String tenant, String namespace, String name) Get the state store with the provided store name.
void	init(Map<String,Object> config, org.apache.pulsar.functions.proto.Function.FunctionDetails functionDetails) Initialize the state store provider.

Methods inherited from class java.lang.Object

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

Field Detail

STATE_STORAGE_SERVICE_URL

public static final String STATE_STORAGE_SERVICE_URL

See Also:

Constant Field Values

Constructor Detail

BKStateStoreProviderImpl

public BKStateStoreProviderImpl()

Method Detail

init

public void init(Map<String,Object> config,
                 org.apache.pulsar.functions.proto.Function.FunctionDetails functionDetails)
          throws Exception

Description copied from interface: StateStoreProvider

Initialize the state store provider.

Specified by:

init in interface StateStoreProvider

Parameters:

config - the config to init the state store provider.

functionDetails - the function details.

Throws:

Exception - when failed to init the state store provider.

getStateStore

public <S extends StateStore> S getStateStore(String tenant,
                                              String namespace,
                                              String name)
                                       throws Exception

Description copied from interface: StateStoreProvider

Get the state store with the provided store name.

Specified by:

getStateStore in interface StateStoreProvider

Type Parameters:

S - the type of interface of the store to return

Parameters:

tenant - the tenant that owns this state store

namespace - the namespace that owns this state store

name - the state store name

Returns:

the state store instance.

Throws:

ClassCastException - if the return type isn't a type or interface of the actual returned store.

Exception

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface StateStoreProvider