Package 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	Description
LookupReferencesManager(LookupConfig lookupConfig, com.fasterxml.jackson.databind.ObjectMapper objectMapper, CoordinatorClient coordinatorClient, org.apache.druid.query.lookup.LookupListeningAnnouncerConfig lookupListeningAnnouncerConfig)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Details

LookupReferencesManager

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

Method Details

start

public void start()
           throws IOException

Throws:

IOException

stop

public void stop()

add

public void add(String lookupName,
 LookupExtractorFactoryContainer lookupExtractorFactoryContainer)

remove

public void remove(String lookupName,
 LookupExtractorFactoryContainer loadedContainer)

submitAsyncLookupTask

public void submitAsyncLookupTask(Runnable task)

get

public Optional<LookupExtractorFactoryContainer> get(String lookupName)

Specified by:

get in interface LookupExtractorFactoryContainerProvider

getAllLookupNames

public Set<String> getAllLookupNames()

Specified by:

getAllLookupNames in interface LookupExtractorFactoryContainerProvider

getCanonicalLookupName

public String getCanonicalLookupName(String lookupName)

Specified by:

getCanonicalLookupName in interface LookupExtractorFactoryContainerProvider