| /** |
| * 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 static org.apache.hadoop.hdfs.server.common.HdfsServerConstants.XATTR_SATISFY_STORAGE_POLICY; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| import java.util.EnumSet; |
| import java.util.List; |
| |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.XAttr; |
| import org.apache.hadoop.fs.XAttrSetFlag; |
| import org.apache.hadoop.fs.permission.FsAction; |
| import org.apache.hadoop.hdfs.XAttrHelper; |
| import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager; |
| import org.apache.hadoop.hdfs.server.namenode.FSDirectory.DirOp; |
| import org.apache.hadoop.hdfs.server.namenode.sps.StoragePolicySatisfyManager; |
| import org.apache.hadoop.util.Lists; |
| |
| /** |
| * Helper class to perform storage policy satisfier related operations. |
| */ |
| final class FSDirSatisfyStoragePolicyOp { |
| |
| /** |
| * Private constructor for preventing FSDirSatisfyStoragePolicyOp object |
| * creation. Static-only class. |
| */ |
| private FSDirSatisfyStoragePolicyOp() { |
| } |
| |
| /** |
| * Satisfy storage policy function which will add the entry to SPS call queue |
| * and will perform satisfaction async way. |
| * |
| * @param fsd |
| * fs directory |
| * @param bm |
| * block manager |
| * @param src |
| * source path |
| * @param logRetryCache |
| * whether to record RPC ids in editlog for retry cache rebuilding |
| * @return file status info |
| * @throws IOException |
| */ |
| static FileStatus satisfyStoragePolicy(FSDirectory fsd, BlockManager bm, |
| String src, boolean logRetryCache) throws IOException { |
| |
| assert fsd.getFSNamesystem().hasWriteLock(); |
| FSPermissionChecker pc = fsd.getPermissionChecker(); |
| INodesInPath iip; |
| fsd.writeLock(); |
| try { |
| |
| // check operation permission. |
| iip = fsd.resolvePath(pc, src, DirOp.WRITE); |
| if (fsd.isPermissionEnabled()) { |
| fsd.checkPathAccess(pc, iip, FsAction.WRITE); |
| } |
| INode inode = FSDirectory.resolveLastINode(iip); |
| if (inode.isFile() && inode.asFile().numBlocks() == 0) { |
| if (NameNode.LOG.isInfoEnabled()) { |
| NameNode.LOG.info( |
| "Skipping satisfy storage policy on path:{} as " |
| + "this file doesn't have any blocks!", |
| inode.getFullPathName()); |
| } |
| } else if (inodeHasSatisfyXAttr(inode)) { |
| NameNode.LOG |
| .warn("Cannot request to call satisfy storage policy on path: " |
| + inode.getFullPathName() |
| + ", as this file/dir was already called for satisfying " |
| + "storage policy."); |
| } else { |
| XAttr satisfyXAttr = XAttrHelper |
| .buildXAttr(XATTR_SATISFY_STORAGE_POLICY); |
| List<XAttr> xAttrs = Arrays.asList(satisfyXAttr); |
| List<XAttr> existingXAttrs = XAttrStorage.readINodeXAttrs(inode); |
| List<XAttr> newXAttrs = FSDirXAttrOp.setINodeXAttrs(fsd, existingXAttrs, |
| xAttrs, EnumSet.of(XAttrSetFlag.CREATE)); |
| XAttrStorage.updateINodeXAttrs(inode, newXAttrs, |
| iip.getLatestSnapshotId()); |
| fsd.getEditLog().logSetXAttrs(src, xAttrs, logRetryCache); |
| |
| // Adding directory in the pending queue, so FileInodeIdCollector |
| // process directory child in batch and recursively |
| StoragePolicySatisfyManager spsManager = |
| fsd.getBlockManager().getSPSManager(); |
| if (spsManager != null) { |
| spsManager.addPathId(inode.getId()); |
| } |
| } |
| } finally { |
| fsd.writeUnlock(); |
| } |
| return fsd.getAuditFileInfo(iip); |
| } |
| |
| static boolean unprotectedSatisfyStoragePolicy(INode inode, FSDirectory fsd) { |
| if (inode.isFile() && inode.asFile().numBlocks() == 0) { |
| return false; |
| } else { |
| // Adding directory in the pending queue, so FileInodeIdCollector process |
| // directory child in batch and recursively |
| StoragePolicySatisfyManager spsManager = |
| fsd.getBlockManager().getSPSManager(); |
| if (spsManager != null) { |
| spsManager.addPathId(inode.getId()); |
| } |
| return true; |
| } |
| } |
| |
| private static boolean inodeHasSatisfyXAttr(INode inode) { |
| final XAttrFeature f = inode.getXAttrFeature(); |
| if (inode.isFile() && f != null |
| && f.getXAttr(XATTR_SATISFY_STORAGE_POLICY) != null) { |
| return true; |
| } |
| return false; |
| } |
| |
| static void removeSPSXattr(FSDirectory fsd, INode inode, XAttr spsXAttr) |
| throws IOException { |
| try { |
| fsd.writeLock(); |
| List<XAttr> existingXAttrs = XAttrStorage.readINodeXAttrs(inode); |
| existingXAttrs.remove(spsXAttr); |
| XAttrStorage.updateINodeXAttrs(inode, existingXAttrs, INodesInPath |
| .fromINode(inode).getLatestSnapshotId()); |
| List<XAttr> xAttrs = Lists.newArrayListWithCapacity(1); |
| xAttrs.add(spsXAttr); |
| fsd.getEditLog().logRemoveXAttrs(inode.getFullPathName(), xAttrs, false); |
| } finally { |
| fsd.writeUnlock(); |
| } |
| } |
| } |