org.apache.shardingsphere.governance.repository.spi

Interface RegistryCenterRepository

All Superinterfaces:

TypedSPI

public interface RegistryCenterRepository
extends TypedSPI

Registry center repository.

Field Summary

Fields

Modifier and Type	Field and Description
static String	PATH_SEPARATOR Path separator.

Method Summary

Modifier and Type	Method and Description
void	close() Close.
void	delete(String key) Delete node.
String	get(String key) Get data from registry center.
List<String>	getChildrenKeys(String key) Get names of sub-node.
void	init(String name, RegistryCenterConfiguration config) Initialize registry center.
void	persist(String key, String value) Persist data.
void	persistEphemeral(String key, String value) Persist ephemeral data.
void	releaseLock(String key) Release lock.
boolean	tryLock(String key, long time, TimeUnit unit) Try to get lock under the lock key.
void	watch(String key, DataChangedEventListener listener) Watch key or path of governance server.

Methods inherited from interface org.apache.shardingsphere.infra.spi.typed.TypedSPI

getProps, getType, setProps

Field Detail

PATH_SEPARATOR

static final String PATH_SEPARATOR

Path separator.

See Also:

Constant Field Values

Method Detail

init

void init(String name,
          RegistryCenterConfiguration config)

Initialize registry center.

Parameters:

name - registry center name

config - registry center configuration

get

String get(String key)

Get data from registry center.

Maybe use cache if existed.

Parameters:

key - key of data

Returns:

value of data

getChildrenKeys

List<String> getChildrenKeys(String key)

Get names of sub-node.

Parameters:

key - key of data

Returns:

sub-node names

persist

void persist(String key,
             String value)

Persist data.

Parameters:

key - key of data

value - value of data

persistEphemeral

void persistEphemeral(String key,
                      String value)

Persist ephemeral data.

Parameters:

key - key of data

value - value of data

delete

void delete(String key)

Delete node.

Parameters:

key - key of data

watch

void watch(String key,
           DataChangedEventListener listener)

Watch key or path of governance server.

Parameters:

key - key of data

listener - data changed event listener

tryLock

boolean tryLock(String key,
                long time,
                TimeUnit unit)

Try to get lock under the lock key.

Parameters:

key - lock key

time - time to wait

unit - time unit

Returns:

true if get the lock, false if not

releaseLock

void releaseLock(String key)

Release lock.

Parameters:

key - lock key

close

void close()

Close.