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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* Copyright 2024 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.channel.socket.nio;
import io.netty.channel.ChannelConfig;
import io.netty.channel.ChannelException;
import io.netty.channel.ChannelMetadata;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelOutboundBuffer;
import io.netty.channel.DefaultChannelConfig;
import io.netty.channel.ServerChannelRecvByteBufAllocator;
import io.netty.channel.nio.AbstractNioMessageChannel;
import io.netty.util.NetUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.SocketUtils;
import io.netty.util.internal.SuppressJava6Requirement;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.SocketAddress;
import java.nio.channels.SelectionKey;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.channels.spi.SelectorProvider;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import static io.netty.channel.ChannelOption.SO_BACKLOG;
import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
/**
* A {@link io.netty.channel.ServerChannel} implementation which uses
* NIO selector based implementation to support UNIX Domain Sockets. This is only supported when using Java 16+.
*/
public final class NioServerDomainSocketChannel extends AbstractNioMessageChannel
implements io.netty.channel.ServerChannel {
private static final Method OPEN_SERVER_SOCKET_CHANNEL_WITH_FAMILY =
SelectorProviderUtil.findOpenMethod("openServerSocketChannel");
private static final InternalLogger logger = InternalLoggerFactory.getInstance(NioServerDomainSocketChannel.class);
private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);
private static final SelectorProvider DEFAULT_SELECTOR_PROVIDER = SelectorProvider.provider();
private final NioDomainServerSocketChannelConfig config;
private volatile boolean bound;
// Package-private for testing.
static ServerSocketChannel newChannel(SelectorProvider provider) {
if (PlatformDependent.javaVersion() < 16) {
throw new UnsupportedOperationException("Only supported with Java 16+");
}
try {
ServerSocketChannel channel =
SelectorProviderUtil.newDomainSocketChannel(OPEN_SERVER_SOCKET_CHANNEL_WITH_FAMILY, provider);
if (channel == null) {
throw new ChannelException("Failed to open a socket.");
}
return channel;
} catch (IOException e) {
throw new ChannelException("Failed to open a socket.", e);
}
}
@Override
protected ServerSocketChannel javaChannel() {
return (ServerSocketChannel) super.javaChannel();
}
/**
* Create a new instance
*/
public NioServerDomainSocketChannel() {
this(DEFAULT_SELECTOR_PROVIDER);
}
/**
* Create a new instance using the given {@link SelectorProvider}.
*/
public NioServerDomainSocketChannel(SelectorProvider provider) {
this(newChannel(provider));
}
/**
* Create a new instance using the given {@link ServerSocketChannel}.
*/
@SuppressJava6Requirement(reason = "Usage guarded by java version check")
public NioServerDomainSocketChannel(ServerSocketChannel channel) {
super(null, channel, SelectionKey.OP_ACCEPT);
if (PlatformDependent.javaVersion() < 16) {
throw new UnsupportedOperationException("Only supported with Java 16+");
}
config = new NioDomainServerSocketChannelConfig(this);
try {
// Check if we already have a local address bound.
bound = channel.getLocalAddress() != null;
} catch (IOException e) {
throw new ChannelException(e);
}
}
@Override
public ChannelConfig config() {
return config;
}
@Override
public ChannelMetadata metadata() {
return METADATA;
}
@Override
public boolean isActive() {
// As java.nio.ServerSocketChannel.isBound() will continue to return true even after the channel was closed
// we will also need to check if it is open.
return isOpen() && bound;
}
@SuppressJava6Requirement(reason = "Usage guarded by java version check")
@Override
protected void doBind(SocketAddress localAddress) throws Exception {
javaChannel().bind(localAddress, config.getBacklog());
bound = true;
}
@Override
protected void doDisconnect() throws Exception {
throw new UnsupportedOperationException();
}
@Override
protected int doReadMessages(List
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