org.apache.carbondata.core.dictionary.client.NonSecureDictionaryClient.java Source code

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Here is the source code for org.apache.carbondata.core.dictionary.client.NonSecureDictionaryClient.java

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/*
 * 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.carbondata.core.dictionary.client;

import java.net.InetSocketAddress;

import org.apache.carbondata.common.logging.LogServiceFactory;
import org.apache.carbondata.core.dictionary.generator.key.DictionaryMessage;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
import org.apache.log4j.Logger;

/**
 * Dictionary client to connect to Dictionary server and generate dictionary values
 */
public class NonSecureDictionaryClient implements DictionaryClient {

    private static final Logger LOGGER = LogServiceFactory.getLogService(NonSecureDictionaryClient.class.getName());

    private NonSecureDictionaryClientHandler nonSecureDictionaryClientHandler = new NonSecureDictionaryClientHandler();

    private NioEventLoopGroup workerGroup;

    /**
     * start dictionary client
     *
     * @param address
     * @param port
     */
    @Override
    public void startClient(String secretKey, String address, int port, boolean encryptSecureServer) {
        LOGGER.info("Starting client on " + address + " " + port);
        long start = System.currentTimeMillis();
        // Create an Event with 1 thread.
        workerGroup = new NioEventLoopGroup(1);
        Bootstrap clientBootstrap = new Bootstrap();
        clientBootstrap.group(workerGroup).channel(NioSocketChannel.class)
                .handler(new ChannelInitializer<SocketChannel>() {
                    @Override
                    public void initChannel(SocketChannel ch) throws Exception {
                        ChannelPipeline pipeline = ch.pipeline();
                        // Based on length provided at header, it collects all packets
                        pipeline.addLast("LengthDecoder", new LengthFieldBasedFrameDecoder(1048576, 0, 2, 0, 2));
                        pipeline.addLast("NonSecureDictionaryClientHandler", nonSecureDictionaryClientHandler);
                    }
                });
        clientBootstrap.connect(new InetSocketAddress(address, port));
        LOGGER.info("Dictionary client Started, Total time spent : " + (System.currentTimeMillis() - start));
    }

    /**
     * for client request
     *
     * @param key
     * @return
     */
    @Override
    public DictionaryMessage getDictionary(DictionaryMessage key) {
        return nonSecureDictionaryClientHandler.getDictionary(key);
    }

    /**
     * shutdown dictionary client
     */
    @Override
    public void shutDown() {
        workerGroup.shutdownGracefully();
        try {
            workerGroup.terminationFuture().sync();
        } catch (InterruptedException e) {
            LOGGER.error(e);
        }
    }
}