/**
   * Allocate, initialize and persist state of the Bucket being created.
   *
   * @param param
   * @param project
   * @param tenantOrg
   * @param neighborhood
   * @param vpool
   * @param flags
   * @param placement
   * @return
   */
  private Bucket prepareBucket(
      BucketParam param,
      Project project,
      TenantOrg tenantOrg,
      VirtualArray neighborhood,
      VirtualPool vpool,
      DataObject.Flag[] flags,
      BucketRecommendation placement) {
    _log.debug("Preparing Bucket creation for Param : {}", param);
    StoragePool pool = null;
    Bucket bucket = new Bucket();
    bucket.setId(URIUtil.createId(Bucket.class));
    bucket.setLabel(param.getLabel().replaceAll(SPECIAL_CHAR_REGEX, ""));
    bucket.setHardQuota(SizeUtil.translateSize(param.getHardQuota()));
    bucket.setSoftQuota(SizeUtil.translateSize(param.getSoftQuota()));
    bucket.setRetention(Integer.valueOf(param.getRetention()));
    bucket.setOwner(getOwner(param.getOwner()));
    bucket.setNamespace(tenantOrg.getNamespace());
    bucket.setVirtualPool(param.getVpool());
    if (project != null) {
      bucket.setProject(new NamedURI(project.getId(), bucket.getLabel()));
    }
    bucket.setTenant(new NamedURI(tenantOrg.getId(), param.getLabel()));
    bucket.setVirtualArray(neighborhood.getId());

    if (null != placement.getSourceStoragePool()) {
      pool = _dbClient.queryObject(StoragePool.class, placement.getSourceStoragePool());
      if (null != pool) {
        bucket.setProtocol(new StringSet());
        bucket
            .getProtocol()
            .addAll(
                VirtualPoolUtil.getMatchingProtocols(vpool.getProtocols(), pool.getProtocols()));
      }
    }

    bucket.setStorageDevice(placement.getSourceStorageSystem());
    bucket.setPool(placement.getSourceStoragePool());
    bucket.setOpStatus(new OpStatusMap());

    // Bucket name to be used at Storage System
    String bucketName = project.getLabel() + UNDER_SCORE + param.getLabel();
    bucket.setName(bucketName.replaceAll(SPECIAL_CHAR_REGEX, ""));

    // Update Bucket path
    StringBuilder bucketPath = new StringBuilder();
    bucketPath
        .append(tenantOrg.getNamespace())
        .append(SLASH)
        .append(project.getLabel())
        .append(SLASH)
        .append(param.getLabel());
    bucket.setPath(bucketPath.toString());

    if (flags != null) {
      bucket.addInternalFlags(flags);
    }
    _dbClient.createObject(bucket);
    return bucket;
  }
  /**
   * 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);
  }
  /**
   * Update Quota Directory for a file share
   *
   * <p>NOTE: This is an asynchronous operation.
   *
   * @param id the URN of a ViPR Quota directory
   * @param param File system Quota directory update parameters
   * @brief Update file system Quota directory
   * @return Task resource representation
   * @throws com.emc.storageos.svcs.errorhandling.resources.InternalException
   */
  @POST
  @Consumes({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
  @Produces({MediaType.APPLICATION_XML, MediaType.APPLICATION_JSON})
  @Path("/{id}")
  @CheckPermission(
      roles = {Role.TENANT_ADMIN},
      acls = {ACL.OWN, ACL.ALL})
  public TaskResourceRep updateQuotaDirectory(
      @PathParam("id") URI id, QuotaDirectoryUpdateParam param) throws InternalException {
    _log.info("FileService::Update Quota directory Request recieved {}", id);

    QuotaDirectory quotaDir = queryResource(id);

    String task = UUID.randomUUID().toString();

    if (param.getSecurityStyle() != null) {
      ArgValidator.checkFieldValueFromEnum(
          param.getSecurityStyle(),
          "security_style",
          EnumSet.allOf(QuotaDirectory.SecurityStyles.class));
    }

    // Get the FileSystem object
    FileShare fs = queryFileShareResource(quotaDir.getParent().getURI());
    ArgValidator.checkFieldNotNull(fs, "filesystem");

    // Update the quota directory object to store in ViPR database
    quotaDir.setOpStatus(new OpStatusMap());

    // Set all other optional parameters too.
    if (param.getOpLock() != null) {
      quotaDir.setOpLock(param.getOpLock());
    }

    if (param.getSecurityStyle() != null) {
      quotaDir.setSecurityStyle(param.getSecurityStyle());
    }

    if (param.getSize() != null) {
      Long quotaSize = SizeUtil.translateSize(param.getSize());
      if (quotaSize > 0) {
        ArgValidator.checkFieldMaximum(quotaSize, fs.getCapacity(), " Bytes", "size");
        quotaDir.setSize(quotaSize);
      }
    }

    Operation op = new Operation();
    op.setResourceType(ResourceOperationTypeEnum.UPDATE_FILE_SYSTEM_QUOTA_DIR);
    quotaDir.getOpStatus().createTaskStatus(task, op);
    fs.setOpStatus(new OpStatusMap());
    fs.getOpStatus().createTaskStatus(task, op);
    _dbClient.persistObject(fs);
    _dbClient.persistObject(quotaDir);

    // Create an object of type "FileShareQtree" to be passed into the south-bound layers.
    FileShareQuotaDirectory qt = new FileShareQuotaDirectory(quotaDir);

    // Now get ready to make calls into the controller
    StorageSystem device = _dbClient.queryObject(StorageSystem.class, fs.getStorageDevice());
    FileController controller = getController(FileController.class, device.getSystemType());
    try {
      controller.updateQuotaDirectory(device.getId(), qt, fs.getId(), task);
    } catch (InternalException e) {
      _log.error("Error during update of Quota Directory {}", e);

      // treating all controller exceptions as internal error for now. controller
      // should discriminate between validation problems vs. internal errors
      throw e;
    }

    auditOp(
        OperationTypeEnum.UPDATE_FILE_SYSTEM_QUOTA_DIR,
        true,
        AuditLogManager.AUDITOP_BEGIN,
        quotaDir.getLabel(),
        quotaDir.getId().toString(),
        fs.getId().toString());

    fs = _dbClient.queryObject(FileShare.class, fs.getId());
    _log.debug(
        "FileService::Quota directory Before sending response, FS ID : {}, Taks : {} ; Status {}",
        fs.getOpStatus().get(task),
        fs.getOpStatus().get(task).getStatus());

    return toTask(quotaDir, task, op);
  }