Module org.elasticsearch.server

Package org.elasticsearch.features

Class FeatureService

java.lang.Object

org.elasticsearch.features.FeatureService

public class FeatureService
extends Object

Manages information on the features supported by nodes in the cluster. For more information, see FeatureSpecification.

Field Summary

Fields

Modifier and Type	Field	Description
static final Version	CLUSTER_FEATURES_ADDED_VERSION
static final NodeFeature	FEATURES_SUPPORTED	A feature indicating that node features are supported.
static final NodeFeature	TEST_FEATURES_ENABLED

Constructor Summary

Constructors

Constructor	Description
FeatureService(List<? extends FeatureSpecification> specs)	Creates a new FeatureService, reporting all the features declared in specs as the local node's supported feature set

Method Summary

Modifier and Type	Method	Description
boolean	clusterHasFeature(ClusterState state, NodeFeature feature)	Returns true if all nodes in state support feature feature.
Map<String,NodeFeature>	getNodeFeatures()	The non-historical features supported by this node.

Methods inherited from class java.lang.Object

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

Field Details

FEATURES_SUPPORTED

public static final NodeFeature FEATURES_SUPPORTED

A feature indicating that node features are supported.

TEST_FEATURES_ENABLED

public static final NodeFeature TEST_FEATURES_ENABLED

CLUSTER_FEATURES_ADDED_VERSION

public static final Version CLUSTER_FEATURES_ADDED_VERSION

Constructor Details

FeatureService

public FeatureService(List<? extends FeatureSpecification> specs)

Creates a new FeatureService, reporting all the features declared in specs as the local node's supported feature set

Method Details

getNodeFeatures

public Map<String,NodeFeature> getNodeFeatures()

The non-historical features supported by this node.

Returns:

Map of feature-id to its declaring NodeFeature object.

clusterHasFeature

public boolean clusterHasFeature(ClusterState state,
 NodeFeature feature)

Returns true if all nodes in state support feature feature.