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From sounakr <...@git.apache.org>
Subject [GitHub] carbondata pull request #1152: [CARBONDATA-1288] Secure Dictionary Server Im...
Date Wed, 12 Jul 2017 12:12:52 GMT
Github user sounakr commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1152#discussion_r126936641
  
    --- Diff: integration/spark2/src/main/java/org/apache/carbondata/spark/dictionary/client/SecureDictionaryClientHandler.java
---
    @@ -0,0 +1,122 @@
    +/*
    + * 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.spark.dictionary.client;
    +
    +import java.nio.ByteBuffer;
    +import java.util.concurrent.BlockingQueue;
    +import java.util.concurrent.LinkedBlockingQueue;
    +
    +import org.apache.carbondata.common.logging.LogService;
    +import org.apache.carbondata.common.logging.LogServiceFactory;
    +import org.apache.carbondata.core.dictionary.generator.key.DictionaryMessage;
    +
    +import io.netty.buffer.ByteBuf;
    +import io.netty.buffer.ByteBufAllocator;
    +import io.netty.buffer.Unpooled;
    +import io.netty.channel.ChannelFuture;
    +import io.netty.channel.ChannelFutureListener;
    +import io.netty.channel.ChannelHandlerContext;
    +import org.apache.spark.network.client.RpcResponseCallback;
    +import org.apache.spark.network.client.TransportClient;
    +import org.apache.spark.network.server.OneForOneStreamManager;
    +import org.apache.spark.network.server.RpcHandler;
    +import org.apache.spark.network.server.StreamManager;
    +
    +/**
    + * Client handler to get data.
    + */
    +public class SecureDictionaryClientHandler extends RpcHandler {
    +
    +  private static final LogService LOGGER =
    +      LogServiceFactory.getLogService(SecureDictionaryClientHandler.class.getName());
    +
    +  private final BlockingQueue<DictionaryMessage> responseMsgQueue = new LinkedBlockingQueue<>();
    +
    +  private ChannelHandlerContext ctx;
    +
    +  private DictionaryChannelFutureListener channelFutureListener;
    +
    +  /**
    +   * client send request to server
    +   *
    +   * @param key DictionaryMessage
    +   * @return DictionaryMessage
    +   */
    +  public DictionaryMessage getDictionary(DictionaryMessage key, TransportClient client)
{
    +    DictionaryMessage dictionaryMessage;
    +    ByteBuffer resp = null;
    +    try {
    +
    +      ByteBuf buffer = ByteBufAllocator.DEFAULT.heapBuffer();
    +      key.writeData(buffer);
    +      resp = client.sendRpcSync(buffer.nioBuffer(), 100000);
    +    } catch (Exception e) {
    +      LOGGER.error(e, "Error while send request to server ");
    +    }
    +    try {
    +      ByteBuf data = Unpooled.wrappedBuffer(resp);
    +      DictionaryMessage key1 = new DictionaryMessage();
    +      if (data == null) {
    +        StringBuilder message = new StringBuilder();
    +        message.append("DictionaryMessage { ColumnName: ").append(key1.getColumnName())
    +            .append(", DictionaryValue: ").append(key1.getDictionaryValue()).append(",
type: ")
    +            .append(key1.getType());
    +        throw new RuntimeException("Request timed out for key : " + message);
    +      }
    +      key1.readSecureData(data);
    +      data.release();
    +      return key1;
    +    } catch (Exception e) {
    +      LOGGER.error(e);
    +      throw new RuntimeException(e);
    +    }
    +  }
    +
    +  @Override public void receive(TransportClient transportClient, ByteBuffer byteBuffer,
    +      RpcResponseCallback rpcResponseCallback) {
    +    try {
    +      ByteBuf data = Unpooled.wrappedBuffer(byteBuffer);
    +      DictionaryMessage key = new DictionaryMessage();
    +      key.readSecureData(data);
    +      data.release();
    +      responseMsgQueue.offer(key);
    +    } catch (Exception e) {
    +      LOGGER.error(e);
    +      throw e;
    +    }
    +  }
    +
    +  @Override public StreamManager getStreamManager() {
    +    return new OneForOneStreamManager();
    +  }
    +
    +  private static class DictionaryChannelFutureListener implements ChannelFutureListener
{
    --- End diff --
    
    Done


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