/
NioAsyncServerSocketOptions.java
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/
NioAsyncServerSocketOptions.java
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/*
* Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.internal.tpcengine.nio;
import com.hazelcast.internal.tpcengine.Option;
import com.hazelcast.internal.tpcengine.net.AsyncSocketOptions;
import com.hazelcast.internal.tpcengine.util.OS;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.SocketOption;
import java.net.StandardSocketOptions;
import java.nio.channels.ServerSocketChannel;
import java.util.HashSet;
import java.util.Set;
import static com.hazelcast.internal.tpcengine.util.Preconditions.checkNotNull;
import static com.hazelcast.internal.tpcengine.util.ReflectionUtil.findStaticFieldValue;
/**
* The AsyncSocketOptions for the {@link NioAsyncServerSocket}.
*/
public class NioAsyncServerSocketOptions implements AsyncSocketOptions {
// This option is available since Java 9, so we need to use reflection.
private static final SocketOption<Boolean> STD_SOCK_OPT_SO_REUSEPORT
= findStaticFieldValue(StandardSocketOptions.class, "SO_REUSEPORT");
private static final Set<SocketOption<?>> WINDOWS_UNSUPPORTED_OPTIONS;
static {
WINDOWS_UNSUPPORTED_OPTIONS = new HashSet<>();
WINDOWS_UNSUPPORTED_OPTIONS.add(STD_SOCK_OPT_SO_REUSEPORT);
}
private final ServerSocketChannel serverSocketChannel;
NioAsyncServerSocketOptions(ServerSocketChannel serverSocketChannel) {
this.serverSocketChannel = serverSocketChannel;
}
private static SocketOption toSocketOption(Option option) {
if (SO_RCVBUF.equals(option)) {
return StandardSocketOptions.SO_RCVBUF;
} else if (SO_REUSEADDR.equals(option)) {
return StandardSocketOptions.SO_REUSEADDR;
} else if (SO_REUSEPORT.equals(option)) {
return STD_SOCK_OPT_SO_REUSEPORT;
} else {
return null;
}
}
@Override
public boolean isSupported(Option option) {
checkNotNull(option, "option");
SocketOption socketOption = toSocketOption(option);
return isSupported(socketOption);
}
private boolean isSupported(SocketOption socketOption) {
if (socketOption == null) {
return false;
}
if (OS.isWindows() && WINDOWS_UNSUPPORTED_OPTIONS.contains(socketOption)) {
return false;
}
return serverSocketChannel.supportedOptions().contains(socketOption);
}
@Override
public <T> boolean set(Option<T> option, T value) {
checkNotNull(option, "option");
checkNotNull(value, "value");
try {
SocketOption socketOption = toSocketOption(option);
if (isSupported(socketOption)) {
serverSocketChannel.setOption(socketOption, value);
return true;
} else {
return false;
}
} catch (IOException e) {
throw new UncheckedIOException("Failed to set " + option.name() + " with value [" + value + "]", e);
}
}
@Override
public <T> T get(Option<T> option) {
checkNotNull(option, "option");
try {
SocketOption socketOption = toSocketOption(option);
if (isSupported(socketOption)) {
return (T) serverSocketChannel.getOption(socketOption);
} else {
return null;
}
} catch (IOException e) {
throw new UncheckedIOException("Failed to get option " + option.name(), e);
}
}
}