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Elasticsearch module: transport-netty4

There is a newer version: 7.10.2

/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.elasticsearch.http.netty4;

import io.netty.channel.Channel;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.common.concurrent.CompletableContext;
import org.elasticsearch.http.HttpChannel;
import org.elasticsearch.http.HttpResponse;
import org.elasticsearch.transport.netty4.Netty4TcpChannel;

import java.net.InetSocketAddress;

public class Netty4HttpChannel implements HttpChannel {

    private final Channel channel;
    private final CompletableContext closeContext = new CompletableContext<>();

    Netty4HttpChannel(Channel channel) {
        this.channel = channel;
        Netty4TcpChannel.addListener(this.channel.closeFuture(), closeContext);
    }

    @Override
    public void sendResponse(HttpResponse response, ActionListener listener) {
        channel.writeAndFlush(response, Netty4TcpChannel.addPromise(listener, channel));
    }

    @Override
    public InetSocketAddress getLocalAddress() {
        return (InetSocketAddress) channel.localAddress();
    }

    @Override
    public InetSocketAddress getRemoteAddress() {
        return (InetSocketAddress) channel.remoteAddress();
    }

    @Override
    public void addCloseListener(ActionListener listener) {
        closeContext.addListener(ActionListener.toBiConsumer(listener));
    }

    @Override
    public boolean isOpen() {
        return channel.isOpen();
    }

    @Override
    public void close() {
        channel.close();
    }

    public Channel getNettyChannel() {
        return channel;
    }

    @Override
    public String toString() {
        return "Netty4HttpChannel{" +
            "localAddress=" + getLocalAddress() +
            ", remoteAddress=" + getRemoteAddress() +
            '}';
    }
}