org.apache.nifi.controller.state.manager

Class StandardStateManagerProvider

java.lang.Object

org.apache.nifi.controller.state.manager.StandardStateManagerProvider

All Implemented Interfaces:

StateManagerProvider

public class StandardStateManagerProvider
extends Object
implements StateManagerProvider

Field Summary

Fields

Modifier and Type	Field and Description
private StateProvider	clusterStateProvider
private StateProvider	localStateProvider
private static org.slf4j.Logger	logger
private static NiFiProperties	nifiProperties
private static StateManagerProvider	provider
private ConcurrentMap<String,StateManager>	stateManagers

Constructor Summary

Constructors

Constructor and Description
StandardStateManagerProvider(StateProvider localStateProvider, StateProvider clusterStateProvider)

Method Summary

Modifier and Type	Method and Description
static StateManagerProvider	create(NiFiProperties properties, VariableRegistry variableRegistry, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createClusteredStateProvider(NiFiProperties properties, VariableRegistry variableRegistry, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createLocalStateProvider(NiFiProperties properties, VariableRegistry variableRegistry, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createStateProvider(File configFile, Scope scope, NiFiProperties properties, VariableRegistry variableRegistry, ExtensionManager extensionManager, ParameterLookup parameterLookup)
void	disableClusterProvider()
void	enableClusterProvider()
protected StateProvider	getClusterStateProvider()
protected StateProvider	getLocalStateProvider()
StateManager	getStateManager(String componentId) Returns the State Manager that has been created for the given component ID, or null if none exists
private static StateProvider	instantiateStateProvider(ExtensionManager extensionManager, String type)
void	onComponentRemoved(String componentId)
private static void	performMethodInjection(Object instance, Class stateProviderClass)
static void	resetProvider()
void	shutdown()
private static StateProvider	withNarClassLoader(StateProvider stateProvider) Wrap the provider so that all method calls set the context class loader to the NAR's class loader before executing the actual provider.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.slf4j.Logger logger

provider

private static StateManagerProvider provider

nifiProperties

private static NiFiProperties nifiProperties

stateManagers

private final ConcurrentMap<String,StateManager> stateManagers

localStateProvider

private final StateProvider localStateProvider

clusterStateProvider

private final StateProvider clusterStateProvider

Constructor Detail

StandardStateManagerProvider

public StandardStateManagerProvider(StateProvider localStateProvider,
                                    StateProvider clusterStateProvider)

Method Detail

getLocalStateProvider

protected StateProvider getLocalStateProvider()

getClusterStateProvider

protected StateProvider getClusterStateProvider()

create

public static StateManagerProvider create(NiFiProperties properties,
                                          VariableRegistry variableRegistry,
                                          ExtensionManager extensionManager,
                                          ParameterLookup parameterLookup)
                                   throws ConfigParseException,
                                          IOException

Throws:

ConfigParseException

IOException

resetProvider

public static void resetProvider()

createLocalStateProvider

private static StateProvider createLocalStateProvider(NiFiProperties properties,
                                                      VariableRegistry variableRegistry,
                                                      ExtensionManager extensionManager,
                                                      ParameterLookup parameterLookup)
                                               throws IOException,
                                                      ConfigParseException

Throws:

IOException

ConfigParseException

createClusteredStateProvider

private static StateProvider createClusteredStateProvider(NiFiProperties properties,
                                                          VariableRegistry variableRegistry,
                                                          ExtensionManager extensionManager,
                                                          ParameterLookup parameterLookup)
                                                   throws IOException,
                                                          ConfigParseException

Throws:

IOException

ConfigParseException

createStateProvider

private static StateProvider createStateProvider(File configFile,
                                                 Scope scope,
                                                 NiFiProperties properties,
                                                 VariableRegistry variableRegistry,
                                                 ExtensionManager extensionManager,
                                                 ParameterLookup parameterLookup)
                                          throws ConfigParseException,
                                                 IOException

Throws:

ConfigParseException

IOException

performMethodInjection

private static void performMethodInjection(Object instance,
                                           Class stateProviderClass)
                                    throws IllegalAccessException,
                                           IllegalArgumentException,
                                           InvocationTargetException

Throws:

IllegalAccessException

IllegalArgumentException

InvocationTargetException

instantiateStateProvider

private static StateProvider instantiateStateProvider(ExtensionManager extensionManager,
                                                      String type)
                                               throws ClassNotFoundException,
                                                      InstantiationException,
                                                      IllegalAccessException

Throws:

ClassNotFoundException

InstantiationException

IllegalAccessException

withNarClassLoader

private static StateProvider withNarClassLoader(StateProvider stateProvider)

Wrap the provider so that all method calls set the context class loader to the NAR's class loader before executing the actual provider.

Parameters:

stateProvider - the base provider to wrap

Returns:

the wrapped provider

getStateManager

public StateManager getStateManager(String componentId)

Returns the State Manager that has been created for the given component ID, or null if none exists

Specified by:

getStateManager in interface StateManagerProvider

Returns:

the StateManager that can be used by the component with the given ID, or null if none exists

shutdown

public void shutdown()

Specified by:

shutdown in interface StateManagerProvider

enableClusterProvider

public void enableClusterProvider()

Specified by:

enableClusterProvider in interface StateManagerProvider

disableClusterProvider

public void disableClusterProvider()

Specified by:

disableClusterProvider in interface StateManagerProvider

onComponentRemoved

public void onComponentRemoved(String componentId)

Specified by:

onComponentRemoved in interface StateManagerProvider