/*
* 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.ignite.internal.processors.hadoop;
import java.io.InputStream;
import org.jetbrains.annotations.Nullable;
/**
* IGFS utility processor adapter.
*/
public interface HadoopHelper {
/**
* @return Whether this is no-op implementation.
*/
public boolean isNoOp();
/**
* Get common Hadoop class loader.
*
* @return Common Hadoop class loader.
*/
public HadoopClassLoader commonClassLoader();
/**
* Load special replacement and impersonate.
*
* @param in Input stream.
* @param originalName Original class name.
* @param replaceName Replacer class name.
* @return Result.
*/
public byte[] loadReplace(InputStream in, final String originalName, final String replaceName);
/**
* @param ldr Loader.
* @param clsName Class.
* @return Input stream.
*/
@Nullable public InputStream loadClassBytes(ClassLoader ldr, String clsName);
/**
* Get work directory.
*
* @return Work directory.
*/
public String workDirectory();
}