1 /*
2 * Copyright 2014 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.netty5.resolver;
18
19 import io.netty5.util.concurrent.EventExecutor;
20 import io.netty5.util.concurrent.Promise;
21
22 import java.net.SocketAddress;
23 import java.util.Collections;
24 import java.util.List;
25
26 /**
27 * A {@link AddressResolver} that does not perform any resolution but always reports successful resolution.
28 * This resolver is useful when name resolution is performed by a handler in a pipeline, such as a proxy handler.
29 */
30 public class NoopAddressResolver extends AbstractAddressResolver<SocketAddress> {
31
32 public NoopAddressResolver(EventExecutor executor) {
33 super(executor);
34 }
35
36 @Override
37 protected boolean doIsResolved(SocketAddress address) {
38 return true;
39 }
40
41 @Override
42 protected void doResolve(SocketAddress unresolvedAddress, Promise<SocketAddress> promise) throws Exception {
43 promise.setSuccess(unresolvedAddress);
44 }
45
46 @Override
47 protected void doResolveAll(
48 SocketAddress unresolvedAddress, Promise<List<SocketAddress>> promise) throws Exception {
49 promise.setSuccess(Collections.singletonList(unresolvedAddress));
50 }
51 }