io.netty.channel.epoll.EpollServerDomainSocketChannel 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).

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/*
 * 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.channel.epoll;

import io.netty.channel.Channel;
import io.netty.channel.unix.DomainSocketAddress;
import io.netty.channel.unix.ServerDomainSocketChannel;
import io.netty.channel.unix.Socket;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.io.File;
import java.net.SocketAddress;

import static io.netty.channel.epoll.LinuxSocket.newSocketDomain;

public final class EpollServerDomainSocketChannel extends AbstractEpollServerChannel
        implements ServerDomainSocketChannel {
    private static final InternalLogger logger = InternalLoggerFactory.getInstance(
            EpollServerDomainSocketChannel.class);

    private final EpollServerChannelConfig config = new EpollServerChannelConfig(this);
    private volatile DomainSocketAddress local;

    public EpollServerDomainSocketChannel() {
        super(newSocketDomain(), false);
    }

    public EpollServerDomainSocketChannel(int fd) {
        super(fd);
    }

    public EpollServerDomainSocketChannel(int fd, boolean active) {
        super(new LinuxSocket(fd), active);
    }

    EpollServerDomainSocketChannel(LinuxSocket fd) {
        super(fd);
    }

    EpollServerDomainSocketChannel(LinuxSocket fd, boolean active) {
        super(fd, active);
    }

    @Override
    protected Channel newChildChannel(int fd, byte[] addr, int offset, int len) throws Exception {
        return new EpollDomainSocketChannel(this, new Socket(fd));
    }

    @Override
    protected DomainSocketAddress localAddress0() {
        return local;
    }

    @Override
    protected void doBind(SocketAddress localAddress) throws Exception {
        socket.bind(localAddress);
        socket.listen(config.getBacklog());
        local = (DomainSocketAddress) localAddress;
        active = true;
    }

    @Override
    protected void doClose() throws Exception {
        try {
            super.doClose();
        } finally {
            DomainSocketAddress local = this.local;
            if (local != null) {
                // Delete the socket file if possible.
                File socketFile = new File(local.path());
                boolean success = socketFile.delete();
                if (!success && logger.isDebugEnabled()) {
                    logger.debug("Failed to delete a domain socket file: {}", local.path());
                }
            }
        }
    }

    @Override
    public EpollServerChannelConfig config() {
        return config;
    }

    @Override
    public DomainSocketAddress remoteAddress() {
        return (DomainSocketAddress) super.remoteAddress();
    }

    @Override
    public DomainSocketAddress localAddress() {
        return (DomainSocketAddress) super.localAddress();
    }
}