| /** |
| * 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.azure; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.permission.PermissionStatus; |
| |
| /** |
| * <p> |
| * Holds basic metadata for a file stored in a {@link NativeFileSystemStore}. |
| * </p> |
| */ |
| @InterfaceAudience.Private |
| class FileMetadata extends FileStatus { |
| // this is not final so that it can be cleared to save memory when not needed. |
| private String key; |
| private final BlobMaterialization blobMaterialization; |
| |
| /** |
| * Constructs a FileMetadata object for a file. |
| * |
| * @param key |
| * The key (path) to the file. |
| * @param length |
| * The length in bytes of the file. |
| * @param lastModified |
| * The last modified date (milliseconds since January 1, 1970 UTC.) |
| * @param permissionStatus |
| * The permission for the file. |
| * @param blockSize |
| * The Hadoop file block size. |
| */ |
| public FileMetadata(String key, long length, long lastModified, |
| PermissionStatus permissionStatus, final long blockSize) { |
| super(length, false, 1, blockSize, lastModified, 0, |
| permissionStatus.getPermission(), |
| permissionStatus.getUserName(), |
| permissionStatus.getGroupName(), |
| null); |
| this.key = key; |
| // Files are never implicit. |
| this.blobMaterialization = BlobMaterialization.Explicit; |
| } |
| |
| /** |
| * Constructs a FileMetadata object for a directory. |
| * |
| * @param key |
| * The key (path) to the directory. |
| * @param lastModified |
| * The last modified date (milliseconds since January 1, 1970 UTC.) |
| * @param permissionStatus |
| * The permission for the directory. |
| * @param blobMaterialization |
| * Whether this is an implicit (no real blob backing it) or explicit |
| * directory. |
| * @param blockSize |
| * The Hadoop file block size. |
| */ |
| public FileMetadata(String key, long lastModified, |
| PermissionStatus permissionStatus, BlobMaterialization blobMaterialization, |
| final long blockSize) { |
| super(0, true, 1, blockSize, lastModified, 0, |
| permissionStatus.getPermission(), |
| permissionStatus.getUserName(), |
| permissionStatus.getGroupName(), |
| null); |
| this.key = key; |
| this.blobMaterialization = blobMaterialization; |
| } |
| |
| @Override |
| public Path getPath() { |
| Path p = super.getPath(); |
| if (p == null) { |
| // Don't store this yet to reduce memory usage, as it will |
| // stay in the Eden Space and later we will update it |
| // with the full canonicalized path. |
| p = NativeAzureFileSystem.keyToPath(key); |
| } |
| return p; |
| } |
| |
| /** |
| * Returns the Azure storage key for the file. Used internally by the framework. |
| * |
| * @return The key for the file. |
| */ |
| public String getKey() { |
| return key; |
| } |
| |
| /** |
| * Indicates whether this is an implicit directory (no real blob backing it) |
| * or an explicit one. |
| * |
| * @return Implicit if this is an implicit directory, or Explicit if it's an |
| * explicit directory or a file. |
| */ |
| public BlobMaterialization getBlobMaterialization() { |
| return blobMaterialization; |
| } |
| |
| void removeKey() { |
| key = null; |
| } |
| } |