blob: 4e64cfe4c17569182be807f5d05131318af44e47 [file] [log] [blame]
/*
* Copyright 2016 The Bazel Authors. All rights reserved.
*
* Licensed 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 com.google.idea.blaze.base.util;
import com.google.common.io.Closeables;
import com.intellij.CommonBundle;
import com.intellij.openapi.diagnostic.Logger;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.io.*;
/**
* Utils for serialization.
*/
public class SerializationUtil {
private static final Logger LOG = Logger.getInstance(SerializationUtil.class.getName());
public static void saveToDisk(@NotNull File file, @NotNull Serializable serializable) throws IOException {
ensureExists(file.getParentFile());
FileOutputStream fos = null;
try {
fos = new FileOutputStream(file);
ObjectOutputStream oos = new ObjectOutputStream(fos);
try {
oos.writeObject(serializable);
}
finally {
Closeables.close(oos, false);
}
}
finally {
Closeables.close(fos, false);
}
}
@Nullable
public static Object loadFromDisk(
@NotNull File file,
@NotNull final Iterable<ClassLoader> classLoaders) throws IOException {
try {
FileInputStream fin = null;
try {
if (!file.exists()) {
return null;
}
fin = new FileInputStream(file);
ObjectInputStream ois = new ObjectInputStream(fin) {
@Override
protected Class<?> resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException {
String name = desc.getName();
for (ClassLoader loader : classLoaders) {
try {
return Class.forName(name, false, loader);
}
catch (ClassNotFoundException e) {
// Ignore - will throw eventually in super
}
}
return super.resolveClass(desc);
}
};
try {
return (Object) ois.readObject();
}
finally {
Closeables.close(ois, false);
}
}
finally {
Closeables.close(fin, false);
}
}
catch (ClassNotFoundException e) {
throw new IOException(e);
}
catch (ClassCastException e) {
throw new IOException(e);
}
}
private static void ensureExists(@NotNull File dir) throws IOException {
if (!dir.exists() && !dir.mkdirs()) {
throw new IOException(
CommonBundle.message("exception.directory.can.not.create", dir.getPath()));
}
}
}