org.apache.shardingsphere.governance.core.registry

Interface GovernanceWatcher<T>

Type Parameters:

T - type of event

All Known Implementing Classes:

DataSourceStateChangedWatcher, GlobalRuleChangedWatcher, LockChangedWatcher, MetaDataChangedWatcher, PropertiesChangedWatcher, TerminalStateChangedWatcher

public interface GovernanceWatcher<T>

Governance watcher.

Method Summary

Modifier and Type	Method and Description
Optional<T>	createGovernanceEvent(DataChangedEvent event) Create governance event.
Collection<String>	getWatchingKeys(Collection<String> schemaNames) Get watching keys.
Collection<DataChangedEvent.Type>	getWatchingTypes() Get watching types.

Method Detail

getWatchingKeys

Collection<String> getWatchingKeys(Collection<String> schemaNames)

Get watching keys.

Parameters:

schemaNames - schema names

Returns:

watching keys

getWatchingTypes

Collection<DataChangedEvent.Type> getWatchingTypes()

Get watching types.

Returns:

watching types

createGovernanceEvent

Optional<T> createGovernanceEvent(DataChangedEvent event)

Create governance event.

Parameters:

event - registry center data changed event

Returns:

governance event