org.apache.inlong.audit.util.EventLoopUtil Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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 org.apache.inlong.audit.util;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.epoll.Epoll;
import io.netty.channel.epoll.EpollChannelOption;
import io.netty.channel.epoll.EpollDatagramChannel;
import io.netty.channel.epoll.EpollEventLoopGroup;
import io.netty.channel.epoll.EpollMode;
import io.netty.channel.epoll.EpollServerSocketChannel;
import io.netty.channel.epoll.EpollSocketChannel;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.DatagramChannel;
import io.netty.channel.socket.ServerSocketChannel;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioDatagramChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.util.concurrent.Future;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadFactory;
public class EventLoopUtil {
public EventLoopUtil() {
}
public static EventLoopGroup newEventLoopGroup(int nThreads, boolean enableBusyWait, ThreadFactory threadFactory) {
if (!Epoll.isAvailable()) {
return new NioEventLoopGroup(nThreads, threadFactory);
} else if (!enableBusyWait) {
return new EpollEventLoopGroup(nThreads, threadFactory);
} else {
EpollEventLoopGroup eventLoopGroup = new EpollEventLoopGroup(nThreads, threadFactory, () -> {
return (selectSupplier, hasTasks) -> {
return -3;
};
});
return eventLoopGroup;
}
}
public static Class getClientSocketChannelClass(EventLoopGroup eventLoopGroup) {
return eventLoopGroup instanceof EpollEventLoopGroup
? EpollSocketChannel.class
: NioSocketChannel.class;
}
public static Class getServerSocketChannelClass(EventLoopGroup eventLoopGroup) {
return eventLoopGroup instanceof EpollEventLoopGroup
? EpollServerSocketChannel.class
: NioServerSocketChannel.class;
}
public static Class getDatagramChannelClass(EventLoopGroup eventLoopGroup) {
return eventLoopGroup instanceof EpollEventLoopGroup
? EpollDatagramChannel.class
: NioDatagramChannel.class;
}
public static void enableTriggeredMode(ServerBootstrap bootstrap) {
if (Epoll.isAvailable()) {
bootstrap.childOption(EpollChannelOption.EPOLL_MODE, EpollMode.LEVEL_TRIGGERED);
}
}
public static CompletableFuture shutdownGracefully(EventLoopGroup eventLoopGroup) {
return toCompletableFutureVoid(eventLoopGroup.shutdownGracefully());
}
/**
* get CompletableFuture by Future
*
* @param future Future
* @return CompletableFuture
*/
public static CompletableFuture toCompletableFutureVoid(Future future) {
Objects.requireNonNull(future, "future cannot be null");
CompletableFuture adapter = new CompletableFuture<>();
if (future.isDone()) {
if (future.isSuccess()) {
adapter.complete(null);
} else {
adapter.completeExceptionally(future.cause());
}
} else {
future.addListener(f -> {
if (f.isSuccess()) {
adapter.complete(null);
} else {
adapter.completeExceptionally(f.cause());
}
});
}
return adapter;
}
}