io.netty.resolver.NoopAddressResolver Maven / Gradle / Ivy
/*
* 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 io.netty.util.internal.UnstableApi;
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.
*/
@UnstableApi
public class NoopAddressResolver extends AbstractAddressResolver {
public NoopAddressResolver(EventExecutor executor) {
super(executor);
}
@Override
protected boolean doIsResolved(SocketAddress address) {
return true;
}
@Override
protected void doResolve(SocketAddress unresolvedAddress, Promise promise) throws Exception {
promise.setSuccess(unresolvedAddress);
}
@Override
protected void doResolveAll(
SocketAddress unresolvedAddress, Promise> promise) throws Exception {
promise.setSuccess(Collections.singletonList(unresolvedAddress));
}
}