org.apache.druid.query.lookup

Class LookupReferencesManager

java.lang.Object

org.apache.druid.query.lookup.LookupReferencesManager

All Implemented Interfaces:

LookupExtractorFactoryContainerProvider

public class LookupReferencesManager
extends Object
implements LookupExtractorFactoryContainerProvider

This class provide a basic LookupExtractorFactory references manager. It allows basic operations fetching, listing, adding and deleting of LookupExtractor objects, and can take periodic snap shot of the loaded lookup extractor specifications in order to bootstrap nodes after restart. It also implements LookupExtractorFactoryContainerProvider, to supply queries and indexing transformations with a reference to a LookupExtractorFactoryContainer. This class is a companion of LookupCoordinatorManager, which communicates with LookupReferencesManager through LookupListeningResource.

Constructor Summary

Constructors

Constructor and Description
LookupReferencesManager(LookupConfig lookupConfig, com.fasterxml.jackson.databind.ObjectMapper objectMapper, DruidLeaderClient druidLeaderClient, org.apache.druid.query.lookup.LookupListeningAnnouncerConfig lookupListeningAnnouncerConfig)

Method Summary

Modifier and Type	Method and Description
void	add(String lookupName, LookupExtractorFactoryContainer lookupExtractorFactoryContainer)
Optional<LookupExtractorFactoryContainer>	get(String lookupName)
Set<String>	getAllLookupNames()
void	remove(String lookupName)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Constructor Detail

LookupReferencesManager

@Inject
public LookupReferencesManager(LookupConfig lookupConfig,
                                       com.fasterxml.jackson.databind.ObjectMapper objectMapper,
                                       DruidLeaderClient druidLeaderClient,
                                       org.apache.druid.query.lookup.LookupListeningAnnouncerConfig lookupListeningAnnouncerConfig)

Method Detail

start

public void start()

stop

public void stop()

add

public void add(String lookupName,
                LookupExtractorFactoryContainer lookupExtractorFactoryContainer)

remove

public void remove(String lookupName)

get

public Optional<LookupExtractorFactoryContainer> get(String lookupName)

Specified by:

get in interface LookupExtractorFactoryContainerProvider

getAllLookupNames

public Set<String> getAllLookupNames()

Specified by:

getAllLookupNames in interface LookupExtractorFactoryContainerProvider