| /* |
| * 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.cassandra.spark.bulkwriter.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.ObjectStreamClass; |
| |
| import com.esotericsoftware.kryo.Kryo; |
| import com.esotericsoftware.kryo.KryoException; |
| import com.esotericsoftware.kryo.Serializer; |
| import com.esotericsoftware.kryo.io.Input; |
| import com.esotericsoftware.kryo.io.Output; |
| import com.esotericsoftware.kryo.util.ObjectMap; |
| |
| /** |
| * Lifted from Kryo 4.0 to fix issues with ObjectInputStream not using the correct class loader |
| * See https://github.com/EsotericSoftware/kryo/blob/19a6b5edee7125fbaf54c64084a8d0e13509920b/src/com/esotericsoftware/kryo/serializers/JavaSerializer.java |
| */ |
| // noinspection unchecked |
| public class SbwJavaSerializer extends Serializer |
| { |
| public void write(Kryo kryo, Output output, Object object) |
| { |
| try |
| { |
| ObjectMap graphContext = kryo.getGraphContext(); |
| ObjectOutputStream objectStream = (ObjectOutputStream) graphContext.get(this); |
| if (objectStream == null) |
| { |
| objectStream = new ObjectOutputStream(output); |
| graphContext.put(this, objectStream); |
| } |
| objectStream.writeObject(object); |
| objectStream.flush(); |
| } |
| catch (Exception exception) |
| { |
| throw new KryoException("Error during Java serialization.", exception); |
| } |
| } |
| |
| public Object read(Kryo kryo, Input input, Class type) |
| { |
| try |
| { |
| ObjectMap graphContext = kryo.getGraphContext(); |
| ObjectInputStream objectStream = (ObjectInputStream) graphContext.get(this); |
| if (objectStream == null) |
| { |
| objectStream = new ObjectInputStreamWithKryoClassLoader(input, kryo); |
| graphContext.put(this, objectStream); |
| } |
| return objectStream.readObject(); |
| } |
| catch (Exception exception) |
| { |
| throw new KryoException("Error during Java deserialization.", exception); |
| } |
| } |
| |
| /** |
| * ${@link ObjectInputStream} uses the last user-defined ${@link ClassLoader} which may not be the correct one. |
| * This is a known Java issue and is often solved by using a specific class loader. |
| * See: |
| * https://github.com/apache/spark/blob/v1.6.3/streaming/src/main/scala/org/apache/spark/streaming/Checkpoint.scala#L154 |
| * https://issues.apache.org/jira/browse/GROOVY-1627 |
| */ |
| private static class ObjectInputStreamWithKryoClassLoader extends ObjectInputStream |
| { |
| private final ClassLoader loader; |
| |
| ObjectInputStreamWithKryoClassLoader(InputStream in, Kryo kryo) throws IOException |
| { |
| super(in); |
| this.loader = kryo.getClassLoader(); |
| } |
| |
| @Override |
| protected Class<?> resolveClass(ObjectStreamClass desc) |
| { |
| try |
| { |
| return Class.forName(desc.getName(), false, loader); |
| } |
| catch (ClassNotFoundException exception) |
| { |
| throw new RuntimeException("Class not found: " + desc.getName(), exception); |
| } |
| } |
| } |
| } |