spark FilteredObjectInputStream 源码
spark FilteredObjectInputStream 代码
文件路径：/launcher/src/main/java/org/apache/spark/launcher/FilteredObjectInputStream.java
/*
* 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.spark.launcher;
import java.io.InputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectStreamClass;
import java.util.Arrays;
import java.util.List;
/**
* An object input stream that only allows classes used by the launcher protocol to be in the
* serialized stream. See SPARK-20922.
*/
class FilteredObjectInputStream extends ObjectInputStream {
private static final List<String> ALLOWED_PACKAGES = Arrays.asList(
"org.apache.spark.launcher.",
"java.lang.");
FilteredObjectInputStream(InputStream is) throws IOException {
super(is);
}
@Override
protected Class<?> resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException {
boolean isValid = ALLOWED_PACKAGES.stream().anyMatch(p -> desc.getName().startsWith(p));
if (!isValid) {
throw new IllegalArgumentException(
String.format("Unexpected class in stream: %s", desc.getName()));
}
return super.resolveClass(desc);
}
}
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