hadoop HttpFSReleaseFilter 源码

  • 2022-10-20
  • 浏览 (146)

haddop HttpFSReleaseFilter 代码

文件路径:/hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/fs/http/server/HttpFSReleaseFilter.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.hadoop.fs.http.server;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.lib.service.FileSystemAccess;
import org.apache.hadoop.lib.servlet.FileSystemReleaseFilter;

/**
 * Filter that releases FileSystemAccess filesystem instances upon HTTP request
 * completion.
 */
@InterfaceAudience.Private
public class HttpFSReleaseFilter extends FileSystemReleaseFilter {

  /**
   * Returns the {@link FileSystemAccess} service to return the FileSystemAccess filesystem
   * instance to.
   *
   * @return the FileSystemAccess service.
   */
  @Override
  protected FileSystemAccess getFileSystemAccess() {
    return HttpFSServerWebApp.get().get(FileSystemAccess.class);
  }

}

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