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.ServerRemovedCallback

Field Summary

Fields

Modifier and Type	Field	Description
static 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, org.apache.druid.java.util.http.client.HttpClient httpClient, DruidNodeDiscoveryProvider druidNodeDiscoveryProvider, com.google.common.base.Predicate<org.apache.druid.java.util.common.Pair<DruidServerMetadata,org.apache.druid.timeline.DataSegment>> defaultFilter, HttpServerInventoryViewConfig config, org.apache.druid.java.util.emitter.service.ServiceEmitter serviceEmitter, org.apache.druid.java.util.common.concurrent.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, org.apache.druid.timeline.DataSegment segment)
boolean	isStarted()
void	registerSegmentCallback(Executor exec, ServerView.SegmentCallback callback)
void	registerSegmentCallback(Executor exec, ServerView.SegmentCallback callback, com.google.common.base.Predicate<org.apache.druid.java.util.common.Pair<DruidServerMetadata,org.apache.druid.timeline.DataSegment>> filter)
void	registerServerRemovedCallback(Executor exec, ServerView.ServerRemovedCallback callback)
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

SEGMENT_LIST_RESP_TYPE_REF

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

Constructor Detail

HttpServerInventoryView

public HttpServerInventoryView(com.fasterxml.jackson.databind.ObjectMapper smileMapper,
                               org.apache.druid.java.util.http.client.HttpClient httpClient,
                               DruidNodeDiscoveryProvider druidNodeDiscoveryProvider,
                               com.google.common.base.Predicate<org.apache.druid.java.util.common.Pair<DruidServerMetadata,org.apache.druid.timeline.DataSegment>> defaultFilter,
                               HttpServerInventoryViewConfig config,
                               org.apache.druid.java.util.emitter.service.ServiceEmitter serviceEmitter,
                               org.apache.druid.java.util.common.concurrent.ScheduledExecutorFactory executorFactory,
                               String execNamePrefix)

Method Detail

start

public void start()

stop

public void stop()

registerSegmentCallback

public void registerSegmentCallback(Executor exec,
                                    ServerView.SegmentCallback callback,
                                    com.google.common.base.Predicate<org.apache.druid.java.util.common.Pair<DruidServerMetadata,org.apache.druid.timeline.DataSegment>> filter)

Specified by:

registerSegmentCallback in interface FilteredServerInventoryView

registerServerRemovedCallback

public void registerServerRemovedCallback(Executor exec,
                                          ServerView.ServerRemovedCallback callback)

Specified by:

registerServerRemovedCallback in interface FilteredServerInventoryView

Specified by:

registerServerRemovedCallback 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,
                                       org.apache.druid.timeline.DataSegment segment)

Specified by:

isSegmentLoadedByServer in interface InventoryView