/**
* Copyright The Apache Software Foundation
*
* 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.hadoop.hbase.rsgroup;
import java.util.HashSet;
import java.util.Set;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.master.MasterServices;
import org.apache.hadoop.hbase.net.Address;
/**
* Utility for this RSGroup package in hbase-rsgroup.
*/
@InterfaceAudience.Private
class Utility {
/**
* @param master
* @return Set of online Servers named for their hostname and port (not ServerName).
*/
static Set<Address> getOnlineServers(final MasterServices master) {
Set<Address> onlineServers = new HashSet<Address>();
if (master == null) return onlineServers;
for(ServerName server: master.getServerManager().getOnlineServers().keySet()) {
onlineServers.add(server.getAddress());
}
return onlineServers;
}
}