/** * 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.hadoop.lib.service; import org.apache.hadoop.classification.InterfaceAudience; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.fs.FileSystem; import java.io.IOException; @InterfaceAudience.Private public interface FileSystemAccess { public interface FileSystemExecutor<T> { public T execute(FileSystem fs) throws IOException; } public <T> T execute(String user, Configuration conf, FileSystemExecutor<T> executor) throws FileSystemAccessException; public FileSystem createFileSystem(String user, Configuration conf) throws IOException, FileSystemAccessException; public void releaseFileSystem(FileSystem fs) throws IOException; public Configuration getFileSystemConfiguration(); }