hadoop INodeDirectoryAttributes 源码

haddop INodeDirectoryAttributes 代码

文件路径：/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/INodeDirectoryAttributes.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.hdfs.server.namenode;

import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.fs.permission.PermissionStatus;
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.hdfs.util.EnumCounters;

import org.apache.hadoop.util.Preconditions;

/**
 * The attributes of an inode.
 */
@InterfaceAudience.Private
public interface INodeDirectoryAttributes extends INodeAttributes {
  public QuotaCounts getQuotaCounts();

  public boolean metadataEquals(INodeDirectoryAttributes other);
  
  /** A copy of the inode directory attributes */
  public static class SnapshotCopy extends INodeAttributes.SnapshotCopy
      implements INodeDirectoryAttributes {
    public SnapshotCopy(byte[] name, PermissionStatus permissions,
        AclFeature aclFeature, long modificationTime, 
        XAttrFeature xAttrsFeature) {
      super(name, permissions, aclFeature, modificationTime, 0L, xAttrsFeature);
    }

    public SnapshotCopy(INodeDirectory dir) {
      super(dir);
    }

    @Override
    public QuotaCounts getQuotaCounts() {
      return new QuotaCounts.Builder().nameSpace(-1).
          storageSpace(-1).typeSpaces(-1).build();
    }

    public boolean isDirectory() {
      return true;
    }

    @Override
    public boolean metadataEquals(INodeDirectoryAttributes other) {
      return other != null
          && getQuotaCounts().equals(other.getQuotaCounts())
          && getPermissionLong() == other.getPermissionLong()
          && getAclFeature() == other.getAclFeature()
          && getXAttrFeature() == other.getXAttrFeature();
    }
  }

  public static class CopyWithQuota extends INodeDirectoryAttributes.SnapshotCopy {
    private QuotaCounts quota;

    public CopyWithQuota(byte[] name, PermissionStatus permissions,
        AclFeature aclFeature, long modificationTime, long nsQuota,
        long dsQuota, EnumCounters<StorageType> typeQuotas, XAttrFeature xAttrsFeature) {
      super(name, permissions, aclFeature, modificationTime, xAttrsFeature);
      this.quota = new QuotaCounts.Builder().nameSpace(nsQuota).
          storageSpace(dsQuota).typeSpaces(typeQuotas).build();
    }

    public CopyWithQuota(INodeDirectory dir) {
      super(dir);
      Preconditions.checkArgument(dir.isQuotaSet());
      final QuotaCounts q = dir.getQuotaCounts();
      this.quota = new QuotaCounts.Builder().quotaCount(q).build();
    }

    @Override
    public QuotaCounts getQuotaCounts() {
      return new QuotaCounts.Builder().quotaCount(quota).build();
    }
  }
}

相关信息

hadoop 源码目录

相关文章

hadoop AclEntryStatusFormat 源码

hadoop AclFeature 源码

hadoop AclStorage 源码

hadoop AclTransformation 源码

hadoop AuditLogger 源码

hadoop BackupImage 源码

hadoop BackupJournalManager 源码

hadoop BackupNode 源码

hadoop BackupState 源码

hadoop CacheManager 源码