001 /** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019 package org.apache.hadoop.fs.http.server; 020 021 import org.apache.hadoop.lib.service.FileSystemAccess; 022 import org.apache.hadoop.lib.servlet.FileSystemReleaseFilter; 023 024 /** 025 * Filter that releases FileSystemAccess filesystem instances upon HTTP request 026 * completion. 027 */ 028 public class HttpFSReleaseFilter extends FileSystemReleaseFilter { 029 030 /** 031 * Returns the {@link FileSystemAccess} service to return the FileSystemAccess filesystem 032 * instance to. 033 * 034 * @return the FileSystemAccess service. 035 */ 036 @Override 037 protected FileSystemAccess getFileSystemAccess() { 038 return HttpFSServerWebApp.get().get(FileSystemAccess.class); 039 } 040 041 }