org.elasticsearch.cluster.EmptyClusterInfoService Maven / Gradle / Ivy
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* Licensed to Elasticsearch under one or more contributor
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* 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.cluster;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.settings.ImmutableSettings;
/**
* ClusterInfoService that provides empty maps for disk usage and shard sizes
*/
public class EmptyClusterInfoService extends AbstractComponent implements ClusterInfoService {
private final static class Holder {
private final static EmptyClusterInfoService instance = new EmptyClusterInfoService();
}
private final ClusterInfo emptyClusterInfo;
private EmptyClusterInfoService() {
super(ImmutableSettings.EMPTY);
emptyClusterInfo = new ClusterInfo(ImmutableMap.of(), ImmutableMap.of());
}
public static EmptyClusterInfoService getInstance() {
return Holder.instance;
}
@Override
public ClusterInfo getClusterInfo() {
return emptyClusterInfo;
}
}