| /** |
| * 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.hadoop.mapred.pipes; |
| |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.Socket; |
| |
| import javax.crypto.SecretKey; |
| |
| import org.apache.hadoop.io.BytesWritable; |
| import org.apache.hadoop.io.DataOutputBuffer; |
| import org.apache.hadoop.io.Text; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableUtils; |
| import org.apache.hadoop.mapreduce.security.SecureShuffleUtils; |
| import org.apache.hadoop.mapreduce.security.token.JobTokenSecretManager; |
| |
| public class CommonStub { |
| |
| protected Socket socket = null; |
| protected DataInputStream dataInput; |
| protected DataOutputStream dataOut; |
| |
| protected String createDigest(byte[] password, String data) throws IOException { |
| SecretKey key = JobTokenSecretManager.createSecretKey(password); |
| |
| return SecureShuffleUtils.hashFromString(data, key); |
| |
| } |
| |
| protected void readObject(Writable obj, DataInputStream inStream) throws IOException { |
| int numBytes = WritableUtils.readVInt(inStream); |
| byte[] buffer; |
| // For BytesWritable and Text, use the specified length to set the length |
| // this causes the "obvious" translations to work. So that if you emit |
| // a string "abc" from C++, it shows up as "abc". |
| if (obj instanceof BytesWritable) { |
| buffer = new byte[numBytes]; |
| inStream.readFully(buffer); |
| ((BytesWritable) obj).set(buffer, 0, numBytes); |
| } else if (obj instanceof Text) { |
| buffer = new byte[numBytes]; |
| inStream.readFully(buffer); |
| ((Text) obj).set(buffer); |
| } else { |
| obj.readFields(inStream); |
| } |
| } |
| |
| |
| protected void writeObject(Writable obj, DataOutputStream stream) |
| throws IOException { |
| // For Text and BytesWritable, encode them directly, so that they end up |
| // in C++ as the natural translations. |
| DataOutputBuffer buffer = new DataOutputBuffer(); |
| if (obj instanceof Text) { |
| Text t = (Text) obj; |
| int len = t.getLength(); |
| WritableUtils.writeVLong(stream, len); |
| stream.flush(); |
| |
| stream.write(t.getBytes(), 0, len); |
| stream.flush(); |
| |
| } else if (obj instanceof BytesWritable) { |
| BytesWritable b = (BytesWritable) obj; |
| int len = b.getLength(); |
| WritableUtils.writeVLong(stream, len); |
| stream.write(b.getBytes(), 0, len); |
| } else { |
| buffer.reset(); |
| obj.write(buffer); |
| int length = buffer.getLength(); |
| |
| WritableUtils.writeVInt(stream, length); |
| stream.write(buffer.getData(), 0, length); |
| } |
| stream.flush(); |
| |
| } |
| |
| protected void initSoket() throws Exception { |
| int port = Integer.parseInt(System.getenv("mapreduce.pipes.command.port")); |
| |
| java.net.InetAddress address = java.net.InetAddress.getLocalHost(); |
| |
| socket = new Socket(address.getHostName(), port); |
| InputStream input = socket.getInputStream(); |
| OutputStream output = socket.getOutputStream(); |
| |
| // try to read |
| dataInput = new DataInputStream(input); |
| |
| WritableUtils.readVInt(dataInput); |
| |
| String str = Text.readString(dataInput); |
| |
| Text.readString(dataInput); |
| |
| dataOut = new DataOutputStream(output); |
| WritableUtils.writeVInt(dataOut, 57); |
| String s = createDigest("password".getBytes(), str); |
| |
| Text.writeString(dataOut, s); |
| |
| // start |
| WritableUtils.readVInt(dataInput); |
| int cuttentAnswer = WritableUtils.readVInt(dataInput); |
| System.out.println("CURRENT_PROTOCOL_VERSION:" + cuttentAnswer); |
| |
| // get configuration |
| // should be MessageType.SET_JOB_CONF.code |
| WritableUtils.readVInt(dataInput); |
| |
| // array length |
| |
| int j = WritableUtils.readVInt(dataInput); |
| for (int i = 0; i < j; i++) { |
| Text.readString(dataInput); |
| i++; |
| Text.readString(dataInput); |
| } |
| } |
| |
| protected void closeSoket() { |
| if (socket != null) { |
| try { |
| socket.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |