541fe86fe0
Motivation: As discussed in #4529, NameResolver design shouldn't be resolving SocketAddresses (or String name + port) and return InetSocketAddresses. It should resolve String names and return InetAddresses. This SocketAddress to InetSocketAddresses resolution is actually a different concern, used by Bootstrap. Modifications: Extract SocketAddress to InetSocketAddresses resolution concern to a new class hierarchy named AddressResolver. These AddressResolvers delegate to NameResolvers. Result: Better separation of concerns. Note that new AddressResolvers generate a bit more allocations because of the intermediate Promise and List<InetAddress>.
52 lines
1.7 KiB
Java
52 lines
1.7 KiB
Java
/*
|
|
* Copyright 2014 The Netty Project
|
|
*
|
|
* The Netty Project 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 io.netty.resolver;
|
|
|
|
import io.netty.util.concurrent.EventExecutor;
|
|
import io.netty.util.concurrent.Promise;
|
|
|
|
import java.net.SocketAddress;
|
|
import java.util.Collections;
|
|
import java.util.List;
|
|
|
|
/**
|
|
* A {@link AddressResolver} that does not perform any resolution but always reports successful resolution.
|
|
* This resolver is useful when name resolution is performed by a handler in a pipeline, such as a proxy handler.
|
|
*/
|
|
public class NoopAddressResolver extends AbstractAddressResolver<SocketAddress> {
|
|
|
|
public NoopAddressResolver(EventExecutor executor) {
|
|
super(executor);
|
|
}
|
|
|
|
@Override
|
|
protected boolean doIsResolved(SocketAddress address) {
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
protected void doResolve(SocketAddress unresolvedAddress, Promise<SocketAddress> promise) throws Exception {
|
|
promise.setSuccess(unresolvedAddress);
|
|
}
|
|
|
|
@Override
|
|
protected void doResolveAll(
|
|
SocketAddress unresolvedAddress, Promise<List<SocketAddress>> promise) throws Exception {
|
|
promise.setSuccess(Collections.singletonList(unresolvedAddress));
|
|
}
|
|
}
|