io.streamnative.pulsar.handlers.kop.proxy.KafkaProxyChannelInitializer Maven / Gradle / Ivy
/**
* Copyright (c) 2019 - 2024 StreamNative, Inc.. All Rights Reserved.
*/
/**
* Licensed 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 io.streamnative.pulsar.handlers.kop.proxy;
import com.github.benmanes.caffeine.cache.Cache;
import com.google.common.annotations.VisibleForTesting;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import io.netty.handler.codec.LengthFieldPrepender;
import io.netty.handler.ssl.SslHandler;
import io.streamnative.pulsar.handlers.kop.EndPoint;
import io.streamnative.pulsar.handlers.kop.KafkaProtocolHandler;
import io.streamnative.pulsar.handlers.kop.utils.ssl.SSLUtils;
import java.io.IOException;
import java.net.InetSocketAddress;
import javax.annotation.Nullable;
import lombok.RequiredArgsConstructor;
import org.apache.kafka.common.TopicPartition;
import org.eclipse.jetty.util.ssl.SslContextFactory;
@RequiredArgsConstructor
public class KafkaProxyChannelInitializer extends ChannelInitializer {
private final EndPoint advertisedEndPoint;
private final ConnectionFactory connectionFactory;
@Nullable
private final SslContextFactory.Server sslContextFactory;
private final Cache leaderCache;
@Override
protected void initChannel(SocketChannel ch) throws Exception {
boolean isClientAuth = false;
if (sslContextFactory != null) {
isClientAuth = sslContextFactory.getWantClientAuth() || sslContextFactory.getNeedClientAuth();
ch.pipeline().addLast(KafkaProtocolHandler.TLS_HANDLER,
new SslHandler(SSLUtils.createSslEngine(sslContextFactory)));
}
ch.pipeline().addLast(new LengthFieldPrepender(4));
ch.pipeline().addLast("frameDecoder",
new LengthFieldBasedFrameDecoder(100 * 1024 * 1024/* 100 MB */, 0, 4, 0, 4));
ch.pipeline().addLast("handler", newCnx(isClientAuth));
}
@VisibleForTesting
KafkaProxyRequestHandler newCnx(boolean isClientAuth) throws IOException {
return new KafkaProxyRequestHandler(advertisedEndPoint, connectionFactory, isClientAuth, leaderCache);
}
}