1 /*
2 * Copyright 2015 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * https://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16
17 package io.netty.resolver.dns;
18
19 import java.net.InetSocketAddress;
20
21 final class SingletonDnsServerAddresses extends DnsServerAddresses {
22
23 private final InetSocketAddress address;
24
25 private final DnsServerAddressStream stream = new DnsServerAddressStream() {
26 @Override
27 public InetSocketAddress next() {
28 return address;
29 }
30
31 @Override
32 public int size() {
33 return 1;
34 }
35
36 @Override
37 public DnsServerAddressStream duplicate() {
38 return this;
39 }
40
41 @Override
42 public String toString() {
43 return SingletonDnsServerAddresses.this.toString();
44 }
45 };
46
47 SingletonDnsServerAddresses(InetSocketAddress address) {
48 this.address = address;
49 }
50
51 @Override
52 public DnsServerAddressStream stream() {
53 return stream;
54 }
55
56 @Override
57 public String toString() {
58 return "singleton(" + address + ")";
59 }
60 }