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Elasticsearch subproject :server
/*
* 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.cluster;
import com.google.common.collect.ImmutableMap;
import org.elasticsearch.common.component.AbstractComponent;
import org.elasticsearch.common.settings.Settings;
/**
* ClusterInfoService that provides empty maps for disk usage and shard sizes
*/
public class EmptyClusterInfoService extends AbstractComponent implements ClusterInfoService {
public final static EmptyClusterInfoService INSTANCE = new EmptyClusterInfoService();
private EmptyClusterInfoService() {
super(Settings.EMPTY);
}
@Override
public ClusterInfo getClusterInfo() {
return ClusterInfo.EMPTY;
}
@Override
public void addListener(Listener listener) {
// no-op, no new info is ever gathered, so adding listeners is useless
}
}