Package 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	Description
private final StateProvider	clusterStateProvider
private final StateProvider	localStateProvider
private static final org.slf4j.Logger	logger
private static NiFiProperties	nifiProperties
private final StateProvider	previousClusterStateProvider
private static StateManagerProvider	provider
private final ConcurrentMap<String,StateManager>	stateManagers

Constructor Summary

Constructors

Modifier	Constructor	Description
	StandardStateManagerProvider(StateProvider localStateProvider, StateProvider clusterStateProvider)
private	StandardStateManagerProvider(StateProvider localStateProvider, StateProvider clusterStateProvider, StateProvider previousClusterStateProvider)

Method Summary

Modifier and Type	Method	Description
static StateManagerProvider	create(NiFiProperties properties, SSLContext sslContext, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createClusteredStateProvider(NiFiProperties properties, SSLContext sslContext, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createLocalStateProvider(NiFiProperties properties, SSLContext sslContext, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProvider	createStateProvider(StateProviderConfiguration providerConfig, SSLContext sslContext, ExtensionManager extensionManager, ParameterLookup parameterLookup)
void	disableClusterProvider()
void	enableClusterProvider()
protected StateProvider	getClusterStateProvider()
protected StateProvider	getLocalStateProvider()
private static StateProvider	getPreviousClusteredStateProvider(NiFiProperties properties, SSLContext sslContext, ExtensionManager extensionManager, ParameterLookup parameterLookup)
private static StateProviderConfiguration	getProviderConfiguration(Scope scope, String providerId, String providerIdPropertyName, File configFile)
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)
private static void	loadPreviousClusterState(StateProvider previousProvider, StateProvider currentProvider)
private static void	loadPreviousClusterStateComponents(StateProvider previousProvider, StateProvider currentProvider, Collection<String> previousStoredComponentIds)
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 Details

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

previousClusterStateProvider

private final StateProvider previousClusterStateProvider

Constructor Details

StandardStateManagerProvider

public StandardStateManagerProvider(StateProvider localStateProvider,
 StateProvider clusterStateProvider)

StandardStateManagerProvider

private StandardStateManagerProvider(StateProvider localStateProvider,
 StateProvider clusterStateProvider,
 StateProvider previousClusterStateProvider)

Method Details

getLocalStateProvider

protected StateProvider getLocalStateProvider()

getClusterStateProvider

protected StateProvider getClusterStateProvider()

create

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

Throws:

ConfigParseException

IOException

resetProvider

public static void resetProvider()

createLocalStateProvider

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

Throws:

IOException

ConfigParseException

createClusteredStateProvider

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

Throws:

IOException

ConfigParseException

getPreviousClusteredStateProvider

private static StateProvider getPreviousClusteredStateProvider(NiFiProperties properties,
 SSLContext sslContext,
 ExtensionManager extensionManager,
 ParameterLookup parameterLookup)
                                                        throws IOException

Throws:

IOException

loadPreviousClusterState

private static void loadPreviousClusterState(StateProvider previousProvider,
 StateProvider currentProvider)

loadPreviousClusterStateComponents

private static void loadPreviousClusterStateComponents(StateProvider previousProvider,
 StateProvider currentProvider,
 Collection<String> previousStoredComponentIds)

getProviderConfiguration

private static StateProviderConfiguration getProviderConfiguration(Scope scope,
 String providerId,
 String providerIdPropertyName,
 File configFile)
                                                            throws IOException

Throws:

IOException

createStateProvider

private static StateProvider createStateProvider(StateProviderConfiguration providerConfig,
 SSLContext sslContext,
 ExtensionManager extensionManager,
 ParameterLookup parameterLookup)
                                          throws IOException

Throws:

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,
NoSuchMethodException,
InvocationTargetException

Throws:

ClassNotFoundException

InstantiationException

IllegalAccessException

NoSuchMethodException

InvocationTargetException

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