/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.apache.solr.client.solrj.impl;
import java.io.Closeable;
import java.util.Set;
import org.apache.solr.common.cloud.ClusterState;
public interface ClusterStateProvider extends Closeable {
/**
* Obtain the state of the collection (cluster status).
* @return the collection state, or null is collection doesn't exist
*/
ClusterState.CollectionRef getState(String collection);
/**
* Obtain set of live_nodes for the cluster.
*/
Set<String> liveNodes();
/**
* Given an alias, returns the collection name that this alias points to
*/
String getAlias(String alias);
/**
* Given a name, returns the collection name if an alias by that name exists, or
* returns the name itself, if no alias exists.
*/
String getCollectionName(String name);
/**
* Obtain a cluster property, or null if it doesn't exist.
*/
Object getClusterProperty(String propertyName);
/**
* Obtain a cluster property, or the default value if it doesn't exist.
*/
Object getClusterProperty(String propertyName, String def);
void connect();
}