Package org.apache.druid.client

Class HttpServerInventoryView

java.lang.Object

org.apache.druid.client.HttpServerInventoryView

All Implemented Interfaces:

FilteredServerInventoryView, InventoryView, ServerInventoryView, ServerView

public class HttpServerInventoryView
extends Object
implements ServerInventoryView, FilteredServerInventoryView

This class uses internal-discovery i.e. DruidNodeDiscoveryProvider to discover various queryable nodes in the cluster such as historicals and realtime peon processes. For each queryable server, it uses HTTP GET /druid-internal/v1/segments (see docs for SegmentListerResource.getSegments(long, long, long, javax.servlet.http.HttpServletRequest)), to keep sync'd state of segments served by those servers.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.druid.client.ServerView

ServerView.BaseSegmentCallback, ServerView.CallbackAction, ServerView.SegmentCallback, ServerView.ServerCallback

Field Summary

Fields

Modifier and Type	Field	Description
static final com.fasterxml.jackson.core.type.TypeReference<ChangeRequestsSnapshot<DataSegmentChangeRequest>>	SEGMENT_LIST_RESP_TYPE_REF

Constructor Summary

Constructors

Constructor	Description
HttpServerInventoryView(com.fasterxml.jackson.databind.ObjectMapper smileMapper, HttpClient httpClient, DruidNodeDiscoveryProvider druidNodeDiscoveryProvider, com.google.common.base.Predicate<Pair<DruidServerMetadata,DataSegment>> defaultFilter, HttpServerInventoryViewConfig config, ServiceEmitter serviceEmitter, ScheduledExecutorFactory executorFactory, String execNamePrefix)

Method Summary

Modifier and Type	Method	Description
Map<String,Object>	getDebugInfo()	This method returns the debugging information exposed by HttpServerInventoryViewResource and meant for that use only.
Collection<DruidServer>	getInventory()
DruidServer	getInventoryValue(String containerKey)
boolean	isSegmentLoadedByServer(String serverKey, DataSegment segment)
boolean	isStarted()
void	registerSegmentCallback(Executor exec, ServerView.SegmentCallback callback)
void	registerSegmentCallback(Executor exec, ServerView.SegmentCallback callback, com.google.common.base.Predicate<Pair<DruidServerMetadata,DataSegment>> filter)
void	registerServerCallback(Executor exec, ServerView.ServerCallback callback)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Details

SEGMENT_LIST_RESP_TYPE_REF

public static final com.fasterxml.jackson.core.type.TypeReference<ChangeRequestsSnapshot<DataSegmentChangeRequest>> SEGMENT_LIST_RESP_TYPE_REF

Constructor Details

HttpServerInventoryView

public HttpServerInventoryView(com.fasterxml.jackson.databind.ObjectMapper smileMapper,
 HttpClient httpClient,
 DruidNodeDiscoveryProvider druidNodeDiscoveryProvider,
 com.google.common.base.Predicate<Pair<DruidServerMetadata,DataSegment>> defaultFilter,
 HttpServerInventoryViewConfig config,
 ServiceEmitter serviceEmitter,
 ScheduledExecutorFactory executorFactory,
 String execNamePrefix)

Method Details

start

public void start()

stop

public void stop()

registerSegmentCallback

public void registerSegmentCallback(Executor exec,
 ServerView.SegmentCallback callback,
 com.google.common.base.Predicate<Pair<DruidServerMetadata,DataSegment>> filter)

Specified by:

registerSegmentCallback in interface FilteredServerInventoryView

registerServerCallback

public void registerServerCallback(Executor exec,
 ServerView.ServerCallback callback)

Specified by:

registerServerCallback in interface FilteredServerInventoryView

Specified by:

registerServerCallback in interface ServerView

registerSegmentCallback

public void registerSegmentCallback(Executor exec,
 ServerView.SegmentCallback callback)

Specified by:

registerSegmentCallback in interface ServerView

getInventoryValue

public DruidServer getInventoryValue(String containerKey)

Specified by:

getInventoryValue in interface InventoryView

getInventory

public Collection<DruidServer> getInventory()

Specified by:

getInventory in interface InventoryView

getDebugInfo

public Map<String,Object> getDebugInfo()

This method returns the debugging information exposed by HttpServerInventoryViewResource and meant for that use only. It must not be used for any other purpose.

isStarted

public boolean isStarted()

Specified by:

isStarted in interface InventoryView

isSegmentLoadedByServer

public boolean isSegmentLoadedByServer(String serverKey,
 DataSegment segment)

Specified by:

isSegmentLoadedByServer in interface InventoryView