| /** |
| * 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.bucket; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import com.google.common.base.Optional; |
| import org.apache.hadoop.ozone.om.ratis.utils.OzoneManagerDoubleBufferHelper; |
| import org.apache.hadoop.ozone.om.request.util.OmResponseUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.hadoop.ozone.security.acl.IAccessAuthorizer; |
| import org.apache.hadoop.ozone.security.acl.OzoneObj; |
| import org.apache.hadoop.ozone.audit.AuditLogger; |
| import org.apache.hadoop.ozone.audit.OMAction; |
| import org.apache.hadoop.ozone.om.request.OMClientRequest; |
| 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.exceptions.OMException; |
| import org.apache.hadoop.ozone.om.helpers.OmBucketInfo; |
| import org.apache.hadoop.ozone.om.response.bucket.OMBucketDeleteResponse; |
| import org.apache.hadoop.ozone.om.response.OMClientResponse; |
| import org.apache.hadoop.ozone.OzoneConsts; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .DeleteBucketRequest; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .DeleteBucketResponse; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .OMRequest; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .OMResponse; |
| 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.BUCKET_LOCK; |
| import static org.apache.hadoop.ozone.om.lock.OzoneManagerLock.Resource.VOLUME_LOCK; |
| |
| /** |
| * Handles DeleteBucket Request. |
| */ |
| public class OMBucketDeleteRequest extends OMClientRequest { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(OMBucketDeleteRequest.class); |
| |
| public OMBucketDeleteRequest(OMRequest omRequest) { |
| super(omRequest); |
| } |
| |
| @Override |
| public OMClientResponse validateAndUpdateCache(OzoneManager ozoneManager, |
| long transactionLogIndex, |
| OzoneManagerDoubleBufferHelper ozoneManagerDoubleBufferHelper) { |
| OMMetrics omMetrics = ozoneManager.getMetrics(); |
| omMetrics.incNumBucketDeletes(); |
| OMMetadataManager omMetadataManager = ozoneManager.getMetadataManager(); |
| |
| OMRequest omRequest = getOmRequest(); |
| DeleteBucketRequest deleteBucketRequest = |
| omRequest.getDeleteBucketRequest(); |
| String volumeName = deleteBucketRequest.getVolumeName(); |
| String bucketName = deleteBucketRequest.getBucketName(); |
| |
| // Generate end user response |
| OMResponse.Builder omResponse = OmResponseUtil.getOMResponseBuilder( |
| getOmRequest()); |
| |
| AuditLogger auditLogger = ozoneManager.getAuditLogger(); |
| Map<String, String> auditMap = buildVolumeAuditMap(volumeName); |
| auditMap.put(OzoneConsts.BUCKET, bucketName); |
| |
| OzoneManagerProtocolProtos.UserInfo userInfo = getOmRequest().getUserInfo(); |
| IOException exception = null; |
| |
| boolean acquiredBucketLock = false, acquiredVolumeLock = false; |
| boolean success = true; |
| OMClientResponse omClientResponse = null; |
| try { |
| // check Acl |
| if (ozoneManager.getAclsEnabled()) { |
| checkAcls(ozoneManager, OzoneObj.ResourceType.BUCKET, |
| OzoneObj.StoreType.OZONE, IAccessAuthorizer.ACLType.DELETE, |
| volumeName, bucketName, null); |
| } |
| |
| |
| // acquire lock |
| acquiredVolumeLock = |
| omMetadataManager.getLock().acquireReadLock(VOLUME_LOCK, volumeName); |
| acquiredBucketLock = |
| omMetadataManager.getLock().acquireWriteLock(BUCKET_LOCK, |
| volumeName, bucketName); |
| |
| // No need to check volume exists here, as bucket cannot be created |
| // with out volume creation. |
| //Check if bucket exists |
| String bucketKey = omMetadataManager.getBucketKey(volumeName, bucketName); |
| OmBucketInfo omBucketInfo = omMetadataManager.getBucketTable() |
| .get(bucketKey); |
| if (omBucketInfo == null) { |
| LOG.debug("bucket: {} not found ", bucketName); |
| throw new OMException("Bucket doesn't exist", |
| OMException.ResultCodes.BUCKET_NOT_FOUND); |
| } |
| |
| // Check if this transaction is a replay of ratis logs. |
| // If this is a replay, then the response has already been returned to |
| // the client. So take no further action and return a dummy |
| // OMClientResponse. |
| if (isReplay(ozoneManager, omBucketInfo, transactionLogIndex)) { |
| LOG.debug("Replayed Transaction {} ignored. Request: {}", |
| transactionLogIndex, deleteBucketRequest); |
| return new OMBucketDeleteResponse(createReplayOMResponse(omResponse)); |
| } |
| |
| //Check if bucket is empty |
| if (!omMetadataManager.isBucketEmpty(volumeName, bucketName)) { |
| LOG.debug("bucket: {} is not empty ", bucketName); |
| throw new OMException("Bucket is not empty", |
| OMException.ResultCodes.BUCKET_NOT_EMPTY); |
| } |
| omMetrics.decNumBuckets(); |
| |
| // Update table cache. |
| omMetadataManager.getBucketTable().addCacheEntry( |
| new CacheKey<>(bucketKey), |
| new CacheValue<>(Optional.absent(), transactionLogIndex)); |
| |
| omResponse.setDeleteBucketResponse( |
| DeleteBucketResponse.newBuilder().build()); |
| |
| // Add to double buffer. |
| omClientResponse = new OMBucketDeleteResponse(omResponse.build(), |
| volumeName, bucketName); |
| } catch (IOException ex) { |
| success = false; |
| exception = ex; |
| omClientResponse = new OMBucketDeleteResponse( |
| createErrorOMResponse(omResponse, exception), volumeName, bucketName); |
| } finally { |
| addResponseToDoubleBuffer(transactionLogIndex, omClientResponse, |
| ozoneManagerDoubleBufferHelper); |
| if (acquiredBucketLock) { |
| omMetadataManager.getLock().releaseWriteLock(BUCKET_LOCK, volumeName, |
| bucketName); |
| } |
| if (acquiredVolumeLock) { |
| omMetadataManager.getLock().releaseReadLock(VOLUME_LOCK, volumeName); |
| } |
| } |
| |
| // Performing audit logging outside of the lock. |
| auditLog(auditLogger, buildAuditMessage(OMAction.DELETE_BUCKET, |
| auditMap, exception, userInfo)); |
| |
| // return response. |
| if (success) { |
| LOG.debug("Deleted bucket:{} in volume:{}", bucketName, volumeName); |
| return omClientResponse; |
| } else { |
| omMetrics.incNumBucketDeleteFails(); |
| LOG.error("Delete bucket failed for bucket:{} in volume:{}", bucketName, |
| volumeName, exception); |
| return omClientResponse; |
| } |
| } |
| } |