| /** |
| * 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.hdfs.server.namenode; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.fs.permission.PermissionStatus; |
| import org.apache.hadoop.hdfs.server.namenode.INodeFile.HeaderFormat; |
| import org.apache.hadoop.hdfs.server.namenode.XAttrFeature; |
| /** |
| * The attributes of a file. |
| */ |
| @InterfaceAudience.Private |
| public interface INodeFileAttributes extends INodeAttributes { |
| /** @return the file replication. */ |
| public short getFileReplication(); |
| |
| /** @return preferred block size in bytes */ |
| public long getPreferredBlockSize(); |
| |
| /** @return the header as a long. */ |
| public long getHeaderLong(); |
| |
| public boolean metadataEquals(INodeFileAttributes other); |
| |
| public byte getLocalStoragePolicyID(); |
| |
| /** A copy of the inode file attributes */ |
| public static class SnapshotCopy extends INodeAttributes.SnapshotCopy |
| implements INodeFileAttributes { |
| private final long header; |
| |
| public SnapshotCopy(byte[] name, PermissionStatus permissions, |
| AclFeature aclFeature, long modificationTime, long accessTime, |
| short replication, long preferredBlockSize, byte storagePolicyID, |
| XAttrFeature xAttrsFeature) { |
| super(name, permissions, aclFeature, modificationTime, accessTime, |
| xAttrsFeature); |
| header = HeaderFormat.toLong(preferredBlockSize, replication, storagePolicyID); |
| } |
| |
| public SnapshotCopy(INodeFile file) { |
| super(file); |
| this.header = file.getHeaderLong(); |
| } |
| |
| @Override |
| public boolean isDirectory() { |
| return false; |
| } |
| |
| @Override |
| public short getFileReplication() { |
| return HeaderFormat.getReplication(header); |
| } |
| |
| @Override |
| public long getPreferredBlockSize() { |
| return HeaderFormat.getPreferredBlockSize(header); |
| } |
| |
| @Override |
| public byte getLocalStoragePolicyID() { |
| return HeaderFormat.getStoragePolicyID(header); |
| } |
| |
| @Override |
| public long getHeaderLong() { |
| return header; |
| } |
| |
| @Override |
| public boolean metadataEquals(INodeFileAttributes other) { |
| return other != null |
| && getHeaderLong()== other.getHeaderLong() |
| && getPermissionLong() == other.getPermissionLong() |
| && getAclFeature() == other.getAclFeature() |
| && getXAttrFeature() == other.getXAttrFeature(); |
| } |
| } |
| } |