/*
* Copyright 2014, The Sporting Exchange Limited
*
* Licensed 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 com.betfair.cougar.client.socket.resolver;
import org.springframework.jmx.export.annotation.ManagedResource;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashSet;
import java.util.Set;
/**
* A network address resolver, that resolves server endpoint addresses using DNS
*/
@ManagedResource
public class DNSBasedAddressResolver implements NetworkAddressResolver {
public Set<String> resolve(String host) throws UnknownHostException {
Set<String> hosts = new HashSet<String>();
final InetAddress[] addresses = InetAddress.getAllByName(host);
for (InetAddress address : addresses) {
hosts.add(address.getHostAddress());
}
return hosts;
}
}