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Diffstat (limited to 'core/src/main/java/org/elasticsearch/plugins/ClusterPlugin.java')
-rw-r--r-- | core/src/main/java/org/elasticsearch/plugins/ClusterPlugin.java | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/core/src/main/java/org/elasticsearch/plugins/ClusterPlugin.java b/core/src/main/java/org/elasticsearch/plugins/ClusterPlugin.java new file mode 100644 index 0000000000..f2bce818e1 --- /dev/null +++ b/core/src/main/java/org/elasticsearch/plugins/ClusterPlugin.java @@ -0,0 +1,44 @@ +/* + * Licensed to Elasticsearch under one or more contributor + * license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright + * ownership. Elasticsearch licenses this file to you under + * the Apache License, Version 2.0 (the "License"); you may + * not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +package org.elasticsearch.plugins; + +import java.util.Collection; +import java.util.Collections; + +import org.elasticsearch.cluster.routing.allocation.decider.AllocationDecider; +import org.elasticsearch.common.settings.ClusterSettings; +import org.elasticsearch.common.settings.Settings; + +/** + * An extension point for {@link Plugin} implementations to customer behavior of cluster management. + */ +public interface ClusterPlugin { + + /** + * Return deciders used to customize where shards are allocated. + * + * @param settings Settings for the node + * @param clusterSettings Settings for the cluster + * @return Custom {@link AllocationDecider} instances + */ + default Collection<AllocationDecider> createAllocationDeciders(Settings settings, ClusterSettings clusterSettings) { + return Collections.emptyList(); + } +} |