Package org.elasticsearch.node

Class ResponseCollectorService

java.lang.Object

org.elasticsearch.node.ResponseCollectorService

All Implemented Interfaces:

ClusterStateListener

public final class ResponseCollectorService
extends java.lang.Object
implements ClusterStateListener

Collects statistics about queue size, response time, and service time of tasks executed on each node, making the EWMA of the values available to the coordinating node.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ResponseCollectorService.ComputedNodeStats	Struct-like class encapsulating a point-in-time snapshot of a particular node's statistics.

Constructor Summary

Constructors

Constructor	Description
ResponseCollectorService(ClusterService clusterService)

Method Summary

Modifier and Type	Method	Description
void	addNodeStatistics(java.lang.String nodeId, int queueSize, long responseTimeNanos, long avgServiceTimeNanos)
void	clusterChanged(ClusterChangedEvent event)	Called when cluster state changes.
AdaptiveSelectionStats	getAdaptiveStats(java.util.Map<java.lang.String,java.lang.Long> clientSearchConnections)
java.util.Map<java.lang.String,ResponseCollectorService.ComputedNodeStats>	getAllNodeStatistics()
java.util.Optional<ResponseCollectorService.ComputedNodeStats>	getNodeStatistics(java.lang.String nodeId)	Optionally return a NodeStatistics for the given nodeid, if response information exists for the given node.

Methods inherited from class java.lang.Object

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

Constructor Details

ResponseCollectorService

public ResponseCollectorService(ClusterService clusterService)

Method Details

clusterChanged

public void clusterChanged(ClusterChangedEvent event)

Description copied from interface: ClusterStateListener

Called when cluster state changes.

Specified by:

clusterChanged in interface ClusterStateListener

addNodeStatistics

public void addNodeStatistics(java.lang.String nodeId, int queueSize, long responseTimeNanos, long avgServiceTimeNanos)

getAllNodeStatistics

public java.util.Map<java.lang.String,ResponseCollectorService.ComputedNodeStats> getAllNodeStatistics()

getAdaptiveStats

public AdaptiveSelectionStats getAdaptiveStats(java.util.Map<java.lang.String,java.lang.Long> clientSearchConnections)

getNodeStatistics

public java.util.Optional<ResponseCollectorService.ComputedNodeStats> getNodeStatistics(java.lang.String nodeId)

Optionally return a NodeStatistics for the given nodeid, if response information exists for the given node. Returns an empty Optional if the node was not found.