1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.tradefed.util; 17 18 import java.io.File; 19 import java.io.FileInputStream; 20 import java.io.FileOutputStream; 21 import java.io.IOException; 22 import java.io.ObjectInputStream; 23 import java.io.ObjectOutputStream; 24 import java.io.Serializable; 25 26 /** Utility to serialize/deserialize an object that implements {@link Serializable}. */ 27 public class SerializationUtil { 28 29 /** 30 * Serialize a object that implements {@link Serializable}. 31 * 32 * @param o the object to serialize. 33 * @return the {@link File} where the object was serialized. 34 * @throws IOException if serialization fails. 35 */ 36 public static File serialize(Serializable o) throws IOException { 37 File tmpSerialized = FileUtil.createTempFile("serial-util", ".ser"); 38 FileOutputStream fileOut = null; 39 ObjectOutputStream out = null; 40 try { 41 fileOut = new FileOutputStream(tmpSerialized); 42 out = new ObjectOutputStream(fileOut); 43 out.writeObject(o); 44 } catch (IOException e) { 45 // catch in order to clean up the tmp file. 46 FileUtil.deleteFile(tmpSerialized); 47 throw e; 48 } finally { 49 StreamUtil.close(out); 50 StreamUtil.close(fileOut); 51 } 52 return tmpSerialized; 53 } 54 55 /** 56 * Deserialize an object that was serialized using {@link #serialize(Serializable)}. 57 * 58 * @param serializedFile the file where the object was serialized. 59 * @param deleteFile true if the serialized file should be deleted once deserialized. 60 * @return the Object deserialized. 61 * @throws IOException if the deserialization fails. 62 */ 63 public static Object deserialize(File serializedFile, boolean deleteFile) throws IOException { 64 FileInputStream fileIn = null; 65 ObjectInputStream in = null; 66 try { 67 fileIn = new FileInputStream(serializedFile); 68 in = new ObjectInputStream(fileIn); 69 return in.readObject(); 70 } catch (ClassNotFoundException cnfe) { 71 throw new RuntimeException(cnfe); 72 } finally { 73 StreamUtil.close(in); 74 StreamUtil.close(fileIn); 75 if (deleteFile) { 76 FileUtil.deleteFile(serializedFile); 77 } 78 } 79 } 80 } 81
