| /** |
| * 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.fs.BatchedRemoteIterator.BatchedListEntries; |
| import org.apache.hadoop.fs.CacheFlag; |
| import org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry; |
| import org.apache.hadoop.hdfs.protocol.CacheDirectiveInfo; |
| import org.apache.hadoop.hdfs.protocol.CachePoolEntry; |
| import org.apache.hadoop.hdfs.protocol.CachePoolInfo; |
| import org.apache.hadoop.security.AccessControlException; |
| |
| import java.io.IOException; |
| import java.util.EnumSet; |
| |
| class FSNDNCacheOp { |
| static CacheDirectiveInfo addCacheDirective( |
| FSNamesystem fsn, CacheManager cacheManager, |
| CacheDirectiveInfo directive, EnumSet<CacheFlag> flags, |
| boolean logRetryCache) |
| throws IOException { |
| |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| |
| if (directive.getId() != null) { |
| throw new IOException("addDirective: you cannot specify an ID " + |
| "for this operation."); |
| } |
| CacheDirectiveInfo effectiveDirective = |
| cacheManager.addDirective(directive, pc, flags); |
| fsn.getEditLog().logAddCacheDirectiveInfo(effectiveDirective, |
| logRetryCache); |
| return effectiveDirective; |
| } |
| |
| static void modifyCacheDirective( |
| FSNamesystem fsn, CacheManager cacheManager, CacheDirectiveInfo directive, |
| EnumSet<CacheFlag> flags, boolean logRetryCache) throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| |
| cacheManager.modifyDirective(directive, pc, flags); |
| fsn.getEditLog().logModifyCacheDirectiveInfo(directive, logRetryCache); |
| } |
| |
| static void removeCacheDirective( |
| FSNamesystem fsn, CacheManager cacheManager, long id, |
| boolean logRetryCache) |
| throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| |
| cacheManager.removeDirective(id, pc); |
| fsn.getEditLog().logRemoveCacheDirectiveInfo(id, logRetryCache); |
| } |
| |
| static BatchedListEntries<CacheDirectiveEntry> listCacheDirectives( |
| FSNamesystem fsn, CacheManager cacheManager, |
| long startId, CacheDirectiveInfo filter) throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| return cacheManager.listCacheDirectives(startId, filter, pc); |
| } |
| |
| static CachePoolInfo addCachePool( |
| FSNamesystem fsn, CacheManager cacheManager, CachePoolInfo req, |
| boolean logRetryCache) |
| throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| |
| if (pc != null) { |
| pc.checkSuperuserPrivilege(); |
| } |
| CachePoolInfo info = cacheManager.addCachePool(req); |
| fsn.getEditLog().logAddCachePool(info, logRetryCache); |
| return info; |
| } |
| |
| static void modifyCachePool( |
| FSNamesystem fsn, CacheManager cacheManager, CachePoolInfo req, |
| boolean logRetryCache) throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| if (pc != null) { |
| pc.checkSuperuserPrivilege(); |
| } |
| cacheManager.modifyCachePool(req); |
| fsn.getEditLog().logModifyCachePool(req, logRetryCache); |
| } |
| |
| static void removeCachePool( |
| FSNamesystem fsn, CacheManager cacheManager, String cachePoolName, |
| boolean logRetryCache) throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| if (pc != null) { |
| pc.checkSuperuserPrivilege(); |
| } |
| cacheManager.removeCachePool(cachePoolName); |
| fsn.getEditLog().logRemoveCachePool(cachePoolName, logRetryCache); |
| } |
| |
| static BatchedListEntries<CachePoolEntry> listCachePools( |
| FSNamesystem fsn, CacheManager cacheManager, String prevKey) |
| throws IOException { |
| final FSPermissionChecker pc = getFsPermissionChecker(fsn); |
| return cacheManager.listCachePools(pc, prevKey); |
| } |
| |
| private static FSPermissionChecker getFsPermissionChecker(FSNamesystem fsn) |
| throws AccessControlException { |
| return fsn.isPermissionEnabled() ? fsn.getPermissionChecker() : null; |
| } |
| } |