/**
   * Updates Bucket values like Quota and Retention.
   *
   * @param id Bucket ID
   * @param param Bucket update parameter
   * @return Task resource representation
   * @throws InternalException if update fails
   */
  @PUT
  @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
  @Path("/{id}")
  @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
  @CheckPermission(
      roles = {Role.TENANT_ADMIN},
      acls = {ACL.OWN, ACL.ALL})
  public TaskResourceRep updateBucket(@PathParam("id") URI id, BucketUpdateParam param)
      throws InternalException {
    Bucket bucket = null;
    ArgValidator.checkFieldUriType(id, Bucket.class, "id");
    bucket = _dbClient.queryObject(Bucket.class, id);
    ArgValidator.checkEntity(bucket, id, isIdEmbeddedInURL(id));

    Long softQuota = SizeUtil.translateSize(param.getSoftQuota());
    Long hardQuota = SizeUtil.translateSize(param.getHardQuota());
    Integer retention = null != param.getRetention() ? Integer.valueOf(param.getRetention()) : 0;

    // if no softquota is provided, use the old value
    if (softQuota == 0) {
      softQuota = bucket.getSoftQuota();
    }

    // if no hardquota is provided, use the old value
    if (hardQuota == 0) {
      hardQuota = bucket.getHardQuota();
    }

    // Hard Quota should be more than SoftQuota
    verifyQuotaValues(softQuota, hardQuota, bucket.getLabel());

    // if no retention is provided, use the old value
    if (retention == 0) {
      retention = bucket.getRetention();
    }

    VirtualPool cos = _dbClient.queryObject(VirtualPool.class, bucket.getVirtualPool());
    // verify retention. Its validated only if Retention is configured.
    if (retention != 0 && cos.getMaxRetention() != 0 && retention > cos.getMaxRetention()) {
      throw APIException.badRequests.insufficientRetentionForVirtualPool(cos.getLabel(), "bucket");
    }

    String task = UUID.randomUUID().toString();
    _log.info(String.format("BucketUpdate --- Bucket id: %1$s, Task: %2$s", id, task));

    StorageSystem storageSystem =
        _dbClient.queryObject(StorageSystem.class, bucket.getStorageDevice());

    Operation op =
        _dbClient.createTaskOpStatus(
            Bucket.class, bucket.getId(), task, ResourceOperationTypeEnum.UPDATE_BUCKET);
    op.setDescription("Bucket update");
    ObjectController controller =
        getController(ObjectController.class, storageSystem.getSystemType());

    controller.updateBucket(bucket.getStorageDevice(), id, softQuota, hardQuota, retention, task);

    auditOp(
        OperationTypeEnum.UPDATE_BUCKET,
        true,
        AuditLogManager.AUDITOP_BEGIN,
        bucket.getId().toString(),
        bucket.getStorageDevice().toString());

    return toTask(bucket, task, op);
  }
  private TaskResourceRep initiateBucketCreation(
      BucketParam param, Project project, TenantOrg tenant, DataObject.Flag[] flags)
      throws InternalException {
    ArgValidator.checkFieldUriType(param.getVpool(), VirtualPool.class, "vpool");
    ArgValidator.checkFieldUriType(param.getVarray(), VirtualArray.class, "varray");

    Long softQuota = SizeUtil.translateSize(param.getSoftQuota());
    Long hardQuota = SizeUtil.translateSize(param.getHardQuota());
    Integer retention = Integer.valueOf(param.getRetention());

    // Hard Quota should be more than SoftQuota
    verifyQuotaValues(softQuota, hardQuota, param.getLabel());

    // check varray
    VirtualArray neighborhood = _dbClient.queryObject(VirtualArray.class, param.getVarray());
    ArgValidator.checkEntity(neighborhood, param.getVarray(), false);
    _permissionsHelper.checkTenantHasAccessToVirtualArray(tenant.getId(), neighborhood);

    // check vpool reference
    VirtualPool cos = _dbClient.queryObject(VirtualPool.class, param.getVpool());
    _permissionsHelper.checkTenantHasAccessToVirtualPool(tenant.getId(), cos);
    ArgValidator.checkEntity(cos, param.getVpool(), false);
    if (!VirtualPool.Type.object.name().equals(cos.getType())) {
      throw APIException.badRequests.virtualPoolNotForObjectStorage(VirtualPool.Type.object.name());
    }

    // verify retention. Its validated only if Retention is configured.
    if (retention != 0 && cos.getMaxRetention() != 0 && retention > cos.getMaxRetention()) {
      throw APIException.badRequests.insufficientRetentionForVirtualPool(cos.getLabel(), "bucket");
    }

    VirtualPoolCapabilityValuesWrapper capabilities = new VirtualPoolCapabilityValuesWrapper();

    capabilities.put(VirtualPoolCapabilityValuesWrapper.RESOURCE_COUNT, Integer.valueOf(1));
    capabilities.put(VirtualPoolCapabilityValuesWrapper.THIN_PROVISIONING, Boolean.FALSE);

    List<BucketRecommendation> placement =
        _bucketScheduler.placeBucket(neighborhood, cos, capabilities);
    if (placement.isEmpty()) {
      throw APIException.badRequests.noMatchingStoragePoolsForVpoolAndVarray(
          cos.getId(), neighborhood.getId());
    }

    // Randomly select a recommended pool
    Collections.shuffle(placement);
    BucketRecommendation recommendation = placement.get(0);

    String task = UUID.randomUUID().toString();
    Bucket bucket = prepareBucket(param, project, tenant, neighborhood, cos, flags, recommendation);

    _log.info(
        String.format(
            "createBucket --- Bucket: %1$s, StoragePool: %2$s, StorageSystem: %3$s",
            bucket.getId(),
            recommendation.getSourceStoragePool(),
            recommendation.getSourceStorageSystem()));

    Operation op =
        _dbClient.createTaskOpStatus(
            Bucket.class, bucket.getId(), task, ResourceOperationTypeEnum.CREATE_BUCKET);
    op.setDescription("Bucket Create");

    // Controller invocation
    StorageSystem system =
        _dbClient.queryObject(StorageSystem.class, recommendation.getSourceStorageSystem());
    ObjectController controller = getController(ObjectController.class, system.getSystemType());
    controller.createBucket(
        recommendation.getSourceStorageSystem(),
        recommendation.getSourceStoragePool(),
        bucket.getId(),
        bucket.getName(),
        bucket.getNamespace(),
        bucket.getRetention(),
        bucket.getHardQuota(),
        bucket.getSoftQuota(),
        bucket.getOwner(),
        task);

    auditOp(
        OperationTypeEnum.CREATE_BUCKET,
        true,
        AuditLogManager.AUDITOP_BEGIN,
        param.getLabel(),
        param.getHardQuota(),
        neighborhood.getId().toString(),
        project == null ? null : project.getId().toString());

    return toTask(bucket, task, op);
  }