io.netty.resolver.InetSocketAddressResolver Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2015 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:
*
* https://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.Future;
import io.netty.util.concurrent.FutureListener;
import io.netty.util.concurrent.Promise;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.List;
/**
* A {@link AbstractAddressResolver} that resolves {@link InetSocketAddress}.
*/
public class InetSocketAddressResolver extends AbstractAddressResolver {
final NameResolver nameResolver;
/**
* @param executor the {@link EventExecutor} which is used to notify the listeners of the {@link Future} returned
* by {@link #resolve(java.net.SocketAddress)}
* @param nameResolver the {@link NameResolver} used for name resolution
*/
public InetSocketAddressResolver(EventExecutor executor, NameResolver nameResolver) {
super(executor, InetSocketAddress.class);
this.nameResolver = nameResolver;
}
@Override
protected boolean doIsResolved(InetSocketAddress address) {
return !address.isUnresolved();
}
@Override
protected void doResolve(final InetSocketAddress unresolvedAddress, final Promise promise)
throws Exception {
// Note that InetSocketAddress.getHostName() will never incur a reverse lookup here,
// because an unresolved address always has a host name.
nameResolver.resolve(unresolvedAddress.getHostName())
.addListener(new FutureListener() {
@Override
public void operationComplete(Future future) throws Exception {
if (future.isSuccess()) {
promise.setSuccess(new InetSocketAddress(future.getNow(), unresolvedAddress.getPort()));
} else {
promise.setFailure(future.cause());
}
}
});
}
@Override
protected void doResolveAll(final InetSocketAddress unresolvedAddress,
final Promise> promise) throws Exception {
// Note that InetSocketAddress.getHostName() will never incur a reverse lookup here,
// because an unresolved address always has a host name.
nameResolver.resolveAll(unresolvedAddress.getHostName())
.addListener(new FutureListener>() {
@Override
public void operationComplete(Future> future) throws Exception {
if (future.isSuccess()) {
List inetAddresses = future.getNow();
List socketAddresses =
new ArrayList(inetAddresses.size());
for (InetAddress inetAddress : inetAddresses) {
socketAddresses.add(new InetSocketAddress(inetAddress, unresolvedAddress.getPort()));
}
promise.setSuccess(socketAddresses);
} else {
promise.setFailure(future.cause());
}
}
});
}
@Override
public void close() {
nameResolver.close();
}
}