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Netty 4 based transport implementation

There is a newer version: 8.17.0

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

package org.elasticsearch.transport.netty4;

import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.ipfilter.AbstractRemoteAddressFilter;

import org.elasticsearch.common.transport.BoundTransportAddress;

import java.net.InetSocketAddress;
import java.util.function.BiPredicate;

@ChannelHandler.Sharable
public class AcceptChannelHandler extends AbstractRemoteAddressFilter {

    private final BiPredicate predicate;
    private final String profile;

    public AcceptChannelHandler(final BiPredicate predicate, final String profile) {
        this.predicate = predicate;
        this.profile = profile;
    }

    @Override
    protected boolean accept(final ChannelHandlerContext ctx, final InetSocketAddress remoteAddress) throws Exception {
        return predicate.test(profile, remoteAddress);
    }

    public interface AcceptPredicate extends BiPredicate {

        void setBoundAddress(BoundTransportAddress boundHttpTransportAddress);
    }
}