Package org.apache.nifi.lookup

Class DistributedMapCacheLookupService

java.lang.Object

org.apache.nifi.components.AbstractConfigurableComponent

org.apache.nifi.controller.AbstractControllerService

org.apache.nifi.lookup.DistributedMapCacheLookupService

All Implemented Interfaces:

org.apache.nifi.components.ConfigurableComponent, org.apache.nifi.controller.ControllerService, LookupService<String>, StringLookupService

@Tags({"lookup","enrich","key","value","map","cache","distributed"})
@CapabilityDescription("Allows to choose a distributed map cache client to retrieve the value associated to a key. The coordinates that are passed to the lookup must contain the key \'key\'.")
public class DistributedMapCacheLookupService
extends org.apache.nifi.controller.AbstractControllerService
implements StringLookupService

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DistributedMapCacheLookupService.StringDeserializer
static class	DistributedMapCacheLookupService.StringSerializer

Field Summary

Fields

Modifier and Type	Field	Description
private DistributedMapCacheClient	cache
static final org.apache.nifi.components.PropertyDescriptor	CHARACTER_ENCODING
private static Charset	charset
private static final String	KEY
private final Serializer<String>	keySerializer
static final org.apache.nifi.components.PropertyDescriptor	PROP_DISTRIBUTED_CACHE_SERVICE
private static final List<org.apache.nifi.components.PropertyDescriptor>	PROPERTY_DESCRIPTORS
private static final Set<String>	REQUIRED_KEYS
private static final List<Charset>	STANDARD_CHARSETS
private final Deserializer<String>	valueDeserializer

Constructor Summary

Constructors

Constructor	Description
DistributedMapCacheLookupService()

Method Summary

Modifier and Type	Method	Description
Set<String>	getRequiredKeys()
private static Set<String>	getStandardCharsetNames()
protected List<org.apache.nifi.components.PropertyDescriptor>	getSupportedPropertyDescriptors()
Optional<String>	lookup(Map<String,Object> coordinates)
void	onEnabled(org.apache.nifi.controller.ConfigurationContext context)

Methods inherited from class org.apache.nifi.controller.AbstractControllerService

abstractClearConfigContext, abstractStoreConfigContext, disabled, enabled, getConfigurationContext, getControllerServiceLookup, getIdentifier, getLogger, getNodeTypeProvider, getProperty, getStateManager, init, initialize, isEnabled

Methods inherited from class org.apache.nifi.components.AbstractConfigurableComponent

customValidate, equals, getPropertyDescriptor, getPropertyDescriptors, getSupportedDynamicPropertyDescriptor, hashCode, onPropertyModified, toString, validate

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.nifi.components.ConfigurableComponent

getIdentifier, getPropertyDescriptor, getPropertyDescriptors, onPropertyModified, validate

Methods inherited from interface org.apache.nifi.controller.ControllerService

initialize, isStateful, migrateProperties

Methods inherited from interface org.apache.nifi.lookup.LookupService

lookup

Methods inherited from interface org.apache.nifi.lookup.StringLookupService

getValueType

Field Details

STANDARD_CHARSETS

private static final List<Charset> STANDARD_CHARSETS

KEY

private static final String KEY

See Also:

• Constant Field Values

REQUIRED_KEYS

private static final Set<String> REQUIRED_KEYS

cache

private volatile DistributedMapCacheClient cache

charset

private static volatile Charset charset

keySerializer

private final Serializer<String> keySerializer

valueDeserializer

private final Deserializer<String> valueDeserializer

PROP_DISTRIBUTED_CACHE_SERVICE

public static final org.apache.nifi.components.PropertyDescriptor PROP_DISTRIBUTED_CACHE_SERVICE

CHARACTER_ENCODING

public static final org.apache.nifi.components.PropertyDescriptor CHARACTER_ENCODING

PROPERTY_DESCRIPTORS

private static final List<org.apache.nifi.components.PropertyDescriptor> PROPERTY_DESCRIPTORS

Constructor Details

DistributedMapCacheLookupService

public DistributedMapCacheLookupService()

Method Details

getStandardCharsetNames

private static Set<String> getStandardCharsetNames()

onEnabled

@OnEnabled
public void onEnabled(org.apache.nifi.controller.ConfigurationContext context)

getSupportedPropertyDescriptors

protected List<org.apache.nifi.components.PropertyDescriptor> getSupportedPropertyDescriptors()

Overrides:

getSupportedPropertyDescriptors in class org.apache.nifi.components.AbstractConfigurableComponent

lookup

public Optional<String> lookup(Map<String,Object> coordinates)

Specified by:

lookup in interface LookupService<String>

getRequiredKeys

public Set<String> getRequiredKeys()

Specified by:

getRequiredKeys in interface LookupService<String>