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/**
* 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 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 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 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 {
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 {
cacheManager.modifyCachePool(req);
fsn.getEditLog().logModifyCachePool(req, logRetryCache);
}
static void removeCachePool(
FSNamesystem fsn, CacheManager cacheManager, String cachePoolName,
boolean logRetryCache) throws IOException {
cacheManager.removeCachePool(cachePoolName);
fsn.getEditLog().logRemoveCachePool(cachePoolName, logRetryCache);
}
static BatchedListEntries 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;
}
}
