| /** |
| * 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.ozone.om.request.key.acl.prefix; |
| |
| import java.io.IOException; |
| |
| import com.google.common.base.Optional; |
| import org.apache.hadoop.ozone.om.OMMetadataManager; |
| import org.apache.hadoop.ozone.om.OMMetrics; |
| import org.apache.hadoop.ozone.om.OzoneManager; |
| import org.apache.hadoop.ozone.om.PrefixManagerImpl; |
| import org.apache.hadoop.ozone.om.PrefixManagerImpl.OMPrefixAclOpResult; |
| import org.apache.hadoop.ozone.om.helpers.OmPrefixInfo; |
| import org.apache.hadoop.ozone.om.ratis.utils.OzoneManagerDoubleBufferHelper; |
| import org.apache.hadoop.ozone.om.request.OMClientRequest; |
| import org.apache.hadoop.ozone.om.response.OMClientResponse; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMRequest; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos.OMResponse; |
| import org.apache.hadoop.ozone.security.acl.IAccessAuthorizer; |
| import org.apache.hadoop.ozone.security.acl.OzoneObj; |
| import org.apache.hadoop.hdds.utils.db.cache.CacheKey; |
| import org.apache.hadoop.hdds.utils.db.cache.CacheValue; |
| |
| import static org.apache.hadoop.ozone.om.lock.OzoneManagerLock.Resource.PREFIX_LOCK; |
| |
| /** |
| * Base class for Prefix acl request. |
| */ |
| public abstract class OMPrefixAclRequest extends OMClientRequest { |
| |
| public OMPrefixAclRequest(OMRequest omRequest) { |
| super(omRequest); |
| } |
| |
| @Override |
| public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager, |
| long transactionLogIndex, |
| OzoneManagerDoubleBufferHelper ozoneManagerDoubleBufferHelper) { |
| |
| |
| OmPrefixInfo omPrefixInfo = null; |
| |
| OMResponse.Builder omResponse = onInit(); |
| OMClientResponse omClientResponse = null; |
| IOException exception = null; |
| |
| OMMetadataManager omMetadataManager = ozoneManager.getMetadataManager(); |
| boolean lockAcquired = false; |
| String volume = null; |
| String bucket = null; |
| String key = null; |
| OMPrefixAclOpResult operationResult = null; |
| boolean result = false; |
| |
| PrefixManagerImpl prefixManager = |
| (PrefixManagerImpl) ozoneManager.getPrefixManager(); |
| try { |
| String prefixPath = getOzoneObj().getPath(); |
| |
| // check Acl |
| if (ozoneManager.getAclsEnabled()) { |
| checkAcls(ozoneManager, OzoneObj.ResourceType.PREFIX, |
| OzoneObj.StoreType.OZONE, IAccessAuthorizer.ACLType.WRITE_ACL, |
| volume, bucket, key); |
| } |
| |
| lockAcquired = |
| omMetadataManager.getLock().acquireWriteLock(PREFIX_LOCK, prefixPath); |
| |
| omPrefixInfo = omMetadataManager.getPrefixTable().get(prefixPath); |
| |
| try { |
| operationResult = apply(prefixManager, omPrefixInfo); |
| } catch (IOException ex) { |
| // In HA case this will never happen. |
| // As in add/remove/setAcl method we have logic to update database, |
| // that can throw exception. But in HA case we shall not update DB. |
| // The code in prefixManagerImpl is being done, because update |
| // in-memory should be done after DB update for Non-HA code path. |
| operationResult = new OMPrefixAclOpResult(null, false); |
| } |
| |
| if (operationResult.isOperationsResult()) { |
| // As for remove acl list, for a prefix if after removing acl from |
| // the existing acl list, if list size becomes zero, delete the |
| // prefix from prefix table. |
| if (getOmRequest().hasRemoveAclRequest() && |
| operationResult.getOmPrefixInfo().getAcls().size() == 0) { |
| omMetadataManager.getPrefixTable().addCacheEntry( |
| new CacheKey<>(prefixPath), |
| new CacheValue<>(Optional.absent(), transactionLogIndex)); |
| } else { |
| // update cache. |
| omMetadataManager.getPrefixTable().addCacheEntry( |
| new CacheKey<>(prefixPath), |
| new CacheValue<>(Optional.of(operationResult.getOmPrefixInfo()), |
| transactionLogIndex)); |
| } |
| } |
| |
| result = operationResult.isOperationsResult(); |
| omClientResponse = onSuccess(omResponse, |
| operationResult.getOmPrefixInfo(), result); |
| |
| } catch (IOException ex) { |
| exception = ex; |
| omClientResponse = onFailure(omResponse, ex); |
| } finally { |
| if (omClientResponse != null) { |
| omClientResponse.setFlushFuture( |
| ozoneManagerDoubleBufferHelper.add(omClientResponse, |
| transactionLogIndex)); |
| } |
| if (lockAcquired) { |
| omMetadataManager.getLock().releaseWriteLock(PREFIX_LOCK, |
| getOzoneObj().getPath()); |
| } |
| } |
| |
| onComplete(result, exception, ozoneManager.getMetrics()); |
| |
| return omClientResponse; |
| } |
| |
| /** |
| * Get the path name from the request. |
| * @return path name |
| */ |
| abstract OzoneObj getOzoneObj(); |
| |
| // TODO: Finer grain metrics can be moved to these callbacks. They can also |
| // be abstracted into separate interfaces in future. |
| /** |
| * Get the initial om response builder with lock. |
| * @return om response builder. |
| */ |
| abstract OMResponse.Builder onInit(); |
| |
| /** |
| * Get the om client response on success case with lock. |
| * @param omResponse |
| * @param omPrefixInfo |
| * @param operationResult |
| * @return OMClientResponse |
| */ |
| abstract OMClientResponse onSuccess( |
| OMResponse.Builder omResponse, OmPrefixInfo omPrefixInfo, |
| boolean operationResult); |
| |
| /** |
| * Get the om client response on failure case with lock. |
| * @param omResponse |
| * @param exception |
| * @return OMClientResponse |
| */ |
| abstract OMClientResponse onFailure(OMResponse.Builder omResponse, |
| IOException exception); |
| |
| /** |
| * Completion hook for final processing before return without lock. |
| * Usually used for logging without lock and metric update. |
| * @param operationResult |
| * @param exception |
| * @param omMetrics |
| */ |
| abstract void onComplete(boolean operationResult, IOException exception, |
| OMMetrics omMetrics); |
| |
| /** |
| * Apply the acl operation, if successfully completed returns true, |
| * else false. |
| * @param prefixManager |
| * @param omPrefixInfo |
| * @throws IOException |
| */ |
| abstract OMPrefixAclOpResult apply(PrefixManagerImpl prefixManager, |
| OmPrefixInfo omPrefixInfo) throws IOException; |
| |
| |
| } |
| |