| /** |
| * 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.volume; |
| |
| import com.google.common.base.Optional; |
| import org.apache.hadoop.ozone.om.OMMetadataManager; |
| import org.apache.hadoop.ozone.om.exceptions.OMException; |
| import org.apache.hadoop.ozone.om.helpers.OmVolumeArgs; |
| import org.apache.hadoop.ozone.om.request.OMClientRequest; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .OMRequest; |
| import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos |
| .UserVolumeInfo; |
| import org.apache.hadoop.hdds.utils.db.cache.CacheKey; |
| import org.apache.hadoop.hdds.utils.db.cache.CacheValue; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * Defines common methods required for volume requests. |
| */ |
| public abstract class OMVolumeRequest extends OMClientRequest { |
| |
| private static final Logger LOG = |
| LoggerFactory.getLogger(OMVolumeRequest.class); |
| |
| public OMVolumeRequest(OMRequest omRequest) { |
| super(omRequest); |
| } |
| |
| /** |
| * Delete volume from user volume list. This method should be called after |
| * acquiring user lock. |
| * @param volumeList - current volume list owned by user. |
| * @param volume - volume which needs to deleted from the volume list. |
| * @param owner - Name of the Owner. |
| * @param txID - The transaction ID that is updating this value. |
| * @return UserVolumeInfo - updated UserVolumeInfo. |
| * @throws IOException |
| */ |
| protected UserVolumeInfo delVolumeFromOwnerList(UserVolumeInfo volumeList, |
| String volume, String owner, long txID) throws IOException { |
| |
| List<String> prevVolList = new ArrayList<>(); |
| |
| if (volumeList != null) { |
| prevVolList.addAll(volumeList.getVolumeNamesList()); |
| } else { |
| // No Volumes for this user |
| throw new OMException("User not found: " + owner, |
| OMException.ResultCodes.USER_NOT_FOUND); |
| } |
| |
| // Remove the volume from the list |
| prevVolList.remove(volume); |
| UserVolumeInfo newVolList = UserVolumeInfo.newBuilder() |
| .addAllVolumeNames(prevVolList) |
| .setObjectID(volumeList.getObjectID()) |
| .setUpdateID(txID) |
| .build(); |
| return newVolList; |
| } |
| |
| |
| /** |
| * Add volume to user volume list. This method should be called after |
| * acquiring user lock. |
| * @param volumeList - current volume list owned by user. |
| * @param volume - volume which needs to be added to this list. |
| * @param owner |
| * @param maxUserVolumeCount |
| * @return VolumeList - which is updated volume list. |
| * @throws OMException - if user has volumes greater than |
| * maxUserVolumeCount, an exception is thrown. |
| */ |
| protected UserVolumeInfo addVolumeToOwnerList(UserVolumeInfo volumeList, |
| String volume, String owner, long maxUserVolumeCount, long txID) |
| throws IOException { |
| |
| // Check the volume count |
| if (volumeList != null && |
| volumeList.getVolumeNamesList().size() >= maxUserVolumeCount) { |
| throw new OMException("Too many volumes for user:" + owner, |
| OMException.ResultCodes.USER_TOO_MANY_VOLUMES); |
| } |
| |
| Set<String> volumeSet = new HashSet<>(); |
| long objectID = txID; |
| if (volumeList != null) { |
| volumeSet.addAll(volumeList.getVolumeNamesList()); |
| objectID = volumeList.getObjectID(); |
| } |
| |
| volumeSet.add(volume); |
| return UserVolumeInfo.newBuilder() |
| .setObjectID(objectID) |
| .setUpdateID(txID) |
| .addAllVolumeNames(volumeSet).build(); |
| } |
| |
| /** |
| * Create Ozone Volume. This method should be called after acquiring user |
| * and volume Lock. |
| * @param omMetadataManager |
| * @param omVolumeArgs |
| * @param volumeList |
| * @param dbVolumeKey |
| * @param dbUserKey |
| * @param transactionLogIndex |
| * @throws IOException |
| */ |
| protected void createVolume(final OMMetadataManager omMetadataManager, |
| OmVolumeArgs omVolumeArgs, UserVolumeInfo volumeList, String dbVolumeKey, |
| String dbUserKey, long transactionLogIndex) { |
| // Update cache: Update user and volume cache. |
| omMetadataManager.getUserTable().addCacheEntry(new CacheKey<>(dbUserKey), |
| new CacheValue<>(Optional.of(volumeList), transactionLogIndex)); |
| |
| omMetadataManager.getVolumeTable().addCacheEntry( |
| new CacheKey<>(dbVolumeKey), |
| new CacheValue<>(Optional.of(omVolumeArgs), transactionLogIndex)); |
| } |
| |
| /** |
| * Return volume info for the specified volume. This method should be |
| * called after acquiring volume lock. |
| * @param omMetadataManager |
| * @param volume |
| * @return OmVolumeArgs |
| * @throws IOException |
| */ |
| protected OmVolumeArgs getVolumeInfo(OMMetadataManager omMetadataManager, |
| String volume) throws IOException { |
| |
| String dbVolumeKey = omMetadataManager.getVolumeKey(volume); |
| OmVolumeArgs volumeArgs = |
| omMetadataManager.getVolumeTable().get(dbVolumeKey); |
| if (volumeArgs == null) { |
| throw new OMException("Volume " + volume + " is not found", |
| OMException.ResultCodes.VOLUME_NOT_FOUND); |
| } |
| return volumeArgs; |
| } |
| } |