google-api-ruby-client/generated/google/apis/spanner_v1/service.rb

# Copyright 2015 Google Inc.
#
# Licensed 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
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# 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.

require 'google/apis/core/base_service'
require 'google/apis/core/json_representation'
require 'google/apis/core/hashable'
require 'google/apis/errors'

module Google
  module Apis
    module SpannerV1
      # Cloud Spanner API
      #
      # Cloud Spanner is a managed, mission-critical, globally consistent and scalable
      #  relational database service.
      #
      # @example
      #    require 'google/apis/spanner_v1'
      #
      #    Spanner = Google::Apis::SpannerV1 # Alias the module
      #    service = Spanner::SpannerService.new
      #
      # @see https://cloud.google.com/spanner/
      class SpannerService < Google::Apis::Core::BaseService
        # @return [String]
        #  API key. Your API key identifies your project and provides you with API access,
        #  quota, and reports. Required unless you provide an OAuth 2.0 token.
        attr_accessor :key

        # @return [String]
        #  Available to use for quota purposes for server-side applications. Can be any
        #  arbitrary string assigned to a user, but should not exceed 40 characters.
        attr_accessor :quota_user

        def initialize
          super('https://spanner.googleapis.com/', '')
          @batch_path = 'batch'
        end
        
        # Gets information about a particular instance configuration.
        # @param [String] name
        #   Required. The name of the requested instance configuration. Values are of
        #   the form `projects/<project>/instanceConfigs/<config>`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::InstanceConfig] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::InstanceConfig]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_config(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::InstanceConfig::Representation
          command.response_class = Google::Apis::SpannerV1::InstanceConfig
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists the supported instance configurations for a given project.
        # @param [String] parent
        #   Required. The name of the project for which a list of supported instance
        #   configurations is requested. Values are of the form
        #   `projects/<project>`.
        # @param [Fixnum] page_size
        #   Number of instance configurations to be returned in the response. If 0 or
        #   less, defaults to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token
        #   from a previous ListInstanceConfigsResponse.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListInstanceConfigsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListInstanceConfigsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_configs(parent, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/instanceConfigs', options)
          command.response_representation = Google::Apis::SpannerV1::ListInstanceConfigsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListInstanceConfigsResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates an instance and begins preparing it to begin serving. The
        # returned long-running operation
        # can be used to track the progress of preparing the new
        # instance. The instance name is assigned by the caller. If the
        # named instance already exists, `CreateInstance` returns
        # `ALREADY_EXISTS`.
        # Immediately upon completion of this request:
        # * The instance is readable via the API, with all requested attributes
        # but no allocated resources. Its state is `CREATING`.
        # Until completion of the returned operation:
        # * Cancelling the operation renders the instance immediately unreadable
        # via the API.
        # * The instance can be deleted.
        # * All other attempts to modify the instance are rejected.
        # Upon completion of the returned operation:
        # * Billing for all successfully-allocated resources begins (some types
        # may have lower than the requested levels).
        # * Databases can be created in the instance.
        # * The instance's allocated resource levels are readable via the API.
        # * The instance's state becomes `READY`.
        # The returned long-running operation will
        # have a name of the format `<instance_name>/operations/<operation_id>` and
        # can be used to track creation of the instance.  The
        # metadata field type is
        # CreateInstanceMetadata.
        # The response field type is
        # Instance, if successful.
        # @param [String] parent
        #   Required. The name of the project in which to create the instance. Values
        #   are of the form `projects/<project>`.
        # @param [Google::Apis::SpannerV1::CreateInstanceRequest] create_instance_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def create_instance(parent, create_instance_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+parent}/instances', options)
          command.request_representation = Google::Apis::SpannerV1::CreateInstanceRequest::Representation
          command.request_object = create_instance_request_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['parent'] = parent unless parent.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Deletes an instance.
        # Immediately upon completion of the request:
        # * Billing ceases for all of the instance's reserved resources.
        # Soon afterward:
        # * The instance and *all of its databases* immediately and
        # irrevocably disappear from the API. All data in the databases
        # is permanently deleted.
        # @param [String] name
        #   Required. The name of the instance to be deleted. Values are of the form
        #   `projects/<project>/instances/<instance>`
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets information about a particular instance.
        # @param [String] name
        #   Required. The name of the requested instance. Values are of the form
        #   `projects/<project>/instances/<instance>`.
        # @param [String] field_mask
        #   If field_mask is present, specifies the subset of Instance fields that
        #   should be returned.
        #   If absent, all Instance fields are returned.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Instance] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Instance]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance(name, field_mask: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Instance::Representation
          command.response_class = Google::Apis::SpannerV1::Instance
          command.params['name'] = name unless name.nil?
          command.query['fieldMask'] = field_mask unless field_mask.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the access control policy for an instance resource. Returns an empty
        # policy if an instance exists but does not have a policy set.
        # Authorization requires `spanner.instances.getIamPolicy` on
        # resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being retrieved.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::GetIamPolicyRequest] get_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_instance_iam_policy(resource, get_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:getIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::GetIamPolicyRequest::Representation
          command.request_object = get_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists all instances in the given project.
        # @param [String] parent
        #   Required. The name of the project for which a list of instances is
        #   requested. Values are of the form `projects/<project>`.
        # @param [String] filter
        #   An expression for filtering the results of the request. Filter rules are
        #   case insensitive. The fields eligible for filtering are:
        #   * `name`
        #   * `display_name`
        #   * `labels.key` where key is the name of a label
        #   Some examples of using filters are:
        #   * `name:*` --> The instance has a name.
        #   * `name:Howl` --> The instance's name contains the string "howl".
        #   * `name:HOWL` --> Equivalent to above.
        #   * `NAME:howl` --> Equivalent to above.
        #   * `labels.env:*` --> The instance has the label "env".
        #   * `labels.env:dev` --> The instance has the label "env" and the value of
        #   the label contains the string "dev".
        #   * `name:howl labels.env:dev` --> The instance's name contains "howl" and
        #   it has the label "env" with its value
        #   containing "dev".
        # @param [Fixnum] page_size
        #   Number of instances to be returned in the response. If 0 or less, defaults
        #   to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token from a
        #   previous ListInstancesResponse.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListInstancesResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListInstancesResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instances(parent, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/instances', options)
          command.response_representation = Google::Apis::SpannerV1::ListInstancesResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListInstancesResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Updates an instance, and begins allocating or releasing resources
        # as requested. The returned long-running
        # operation can be used to track the
        # progress of updating the instance. If the named instance does not
        # exist, returns `NOT_FOUND`.
        # Immediately upon completion of this request:
        # * For resource types for which a decrease in the instance's allocation
        # has been requested, billing is based on the newly-requested level.
        # Until completion of the returned operation:
        # * Cancelling the operation sets its metadata's
        # cancel_time, and begins
        # restoring resources to their pre-request values. The operation
        # is guaranteed to succeed at undoing all resource changes,
        # after which point it terminates with a `CANCELLED` status.
        # * All other attempts to modify the instance are rejected.
        # * Reading the instance via the API continues to give the pre-request
        # resource levels.
        # Upon completion of the returned operation:
        # * Billing begins for all successfully-allocated resources (some types
        # may have lower than the requested levels).
        # * All newly-reserved resources are available for serving the instance's
        # tables.
        # * The instance's new resource levels are readable via the API.
        # The returned long-running operation will
        # have a name of the format `<instance_name>/operations/<operation_id>` and
        # can be used to track the instance modification.  The
        # metadata field type is
        # UpdateInstanceMetadata.
        # The response field type is
        # Instance, if successful.
        # Authorization requires `spanner.instances.update` permission on
        # resource name.
        # @param [String] name
        #   Required. A unique identifier for the instance, which cannot be changed
        #   after the instance is created. Values are of the form
        #   `projects/<project>/instances/a-z*[a-z0-9]`. The final
        #   segment of the name must be between 2 and 64 characters in length.
        # @param [Google::Apis::SpannerV1::UpdateInstanceRequest] update_instance_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def patch_project_instance(name, update_instance_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:patch, 'v1/{+name}', options)
          command.request_representation = Google::Apis::SpannerV1::UpdateInstanceRequest::Representation
          command.request_object = update_instance_request_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Sets the access control policy on an instance resource. Replaces any
        # existing policy.
        # Authorization requires `spanner.instances.setIamPolicy` on
        # resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being set. The
        #   format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for databases resources.
        # @param [Google::Apis::SpannerV1::SetIamPolicyRequest] set_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def set_instance_iam_policy(resource, set_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:setIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::SetIamPolicyRequest::Representation
          command.request_object = set_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Returns permissions that the caller has on the specified instance resource.
        # Attempting this RPC on a non-existent Cloud Spanner instance resource will
        # result in a NOT_FOUND error if the user has `spanner.instances.list`
        # permission on the containing Google Cloud Project. Otherwise returns an
        # empty set of permissions.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which permissions are being tested.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::TestIamPermissionsRequest] test_iam_permissions_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::TestIamPermissionsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::TestIamPermissionsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def test_instance_iam_permissions(resource, test_iam_permissions_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:testIamPermissions', options)
          command.request_representation = Google::Apis::SpannerV1::TestIamPermissionsRequest::Representation
          command.request_object = test_iam_permissions_request_object
          command.response_representation = Google::Apis::SpannerV1::TestIamPermissionsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::TestIamPermissionsResponse
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists the backup long-running operations in
        # the given instance. A backup operation has a name of the form
        # `projects/<project>/instances/<instance>/backups/<backup>/operations/<
        # operation>`.
        # The long-running operation
        # metadata field type
        # `metadata.type_url` describes the type of the metadata. Operations returned
        # include those that have completed/failed/canceled within the last 7 days,
        # and pending operations. Operations returned are ordered by
        # `operation.metadata.value.progress.start_time` in descending order starting
        # from the most recently started operation.
        # @param [String] parent
        #   Required. The instance of the backup operations. Values are of
        #   the form `projects/<project>/instances/<instance>`.
        # @param [String] filter
        #   An expression that filters the list of returned backup operations.
        #   A filter expression consists of a field name, a
        #   comparison operator, and a value for filtering.
        #   The value must be a string, a number, or a boolean. The comparison operator
        #   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
        #   Colon `:` is the contains operator. Filter rules are not case sensitive.
        #   The following fields in the operation
        #   are eligible for filtering:
        #   * `name` - The name of the long-running operation
        #   * `done` - False if the operation is in progress, else true.
        #   * `metadata.@type` - the type of metadata. For example, the type string
        #   for CreateBackupMetadata is
        #   `type.googleapis.com/google.spanner.admin.database.v1.
        #   CreateBackupMetadata`.
        #   * `metadata.<field_name>` - any field in metadata.value.
        #   * `error` - Error associated with the long-running operation.
        #   * `response.@type` - the type of response.
        #   * `response.<field_name>` - any field in response.value.
        #   You can combine multiple expressions by enclosing each expression in
        #   parentheses. By default, expressions are combined with AND logic, but
        #   you can specify AND, OR, and NOT logic explicitly.
        #   Here are a few examples:
        #   * `done:true` - The operation is complete.
        #   * `metadata.database:prod` - The database the backup was taken from has
        #   a name containing the string "prod".
        #   * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.
        #   CreateBackupMetadata) AND` \
        #   `(metadata.name:howl) AND` \
        #   `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
        #   `(error:*)` - Returns operations where:
        #   * The operation's metadata type is CreateBackupMetadata.
        #   * The backup name contains the string "howl".
        #   * The operation started before 2018-03-28T14:50:00Z.
        #   * The operation resulted in an error.
        # @param [Fixnum] page_size
        #   Number of operations to be returned in the response. If 0 or
        #   less, defaults to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token
        #   from a previous ListBackupOperationsResponse to the
        #   same `parent` and with the same `filter`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListBackupOperationsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListBackupOperationsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_backupoperations(parent, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/backupOperations', options)
          command.response_representation = Google::Apis::SpannerV1::ListBackupOperationsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListBackupOperationsResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Starts creating a new Cloud Spanner Backup.
        # The returned backup long-running operation
        # will have a name of the format
        # `projects/<project>/instances/<instance>/backups/<backup>/operations/<
        # operation_id>`
        # and can be used to track creation of the backup. The
        # metadata field type is
        # CreateBackupMetadata. The
        # response field type is
        # Backup, if successful. Cancelling the returned operation will stop the
        # creation and delete the backup.
        # There can be only one pending backup creation per database. Backup creation
        # of different databases can run concurrently.
        # @param [String] parent
        #   Required. The name of the instance in which the backup will be
        #   created. This must be the same instance that contains the database the
        #   backup will be created from. The backup will be stored in the
        #   location(s) specified in the instance configuration of this
        #   instance. Values are of the form
        #   `projects/<project>/instances/<instance>`.
        # @param [Google::Apis::SpannerV1::Backup] backup_object
        # @param [String] backup_id
        #   Required. The id of the backup to be created. The `backup_id` appended to
        #   `parent` forms the full backup name of the form
        #   `projects/<project>/instances/<instance>/backups/<backup_id>`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def create_project_instance_backup(parent, backup_object = nil, backup_id: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+parent}/backups', options)
          command.request_representation = Google::Apis::SpannerV1::Backup::Representation
          command.request_object = backup_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['parent'] = parent unless parent.nil?
          command.query['backupId'] = backup_id unless backup_id.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Deletes a pending or completed Backup.
        # @param [String] name
        #   Required. Name of the backup to delete.
        #   Values are of the form
        #   `projects/<project>/instances/<instance>/backups/<backup>`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance_backup(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets metadata on a pending or completed Backup.
        # @param [String] name
        #   Required. Name of the backup.
        #   Values are of the form
        #   `projects/<project>/instances/<instance>/backups/<backup>`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Backup] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Backup]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_backup(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Backup::Representation
          command.response_class = Google::Apis::SpannerV1::Backup
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the access control policy for a database or backup resource.
        # Returns an empty policy if a database or backup exists but does not have a
        # policy set.
        # Authorization requires `spanner.databases.getIamPolicy` permission on
        # resource.
        # For backups, authorization requires `spanner.backups.getIamPolicy`
        # permission on resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being retrieved.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::GetIamPolicyRequest] get_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_backup_iam_policy(resource, get_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:getIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::GetIamPolicyRequest::Representation
          command.request_object = get_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists completed and pending backups.
        # Backups returned are ordered by `create_time` in descending order,
        # starting from the most recent `create_time`.
        # @param [String] parent
        #   Required. The instance to list backups from.  Values are of the
        #   form `projects/<project>/instances/<instance>`.
        # @param [String] filter
        #   An expression that filters the list of returned backups.
        #   A filter expression consists of a field name, a comparison operator, and a
        #   value for filtering.
        #   The value must be a string, a number, or a boolean. The comparison operator
        #   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
        #   Colon `:` is the contains operator. Filter rules are not case sensitive.
        #   The following fields in the Backup are eligible for filtering:
        #   * `name`
        #   * `database`
        #   * `state`
        #   * `create_time` (and values are of the format YYYY-MM-DDTHH:MM:SSZ)
        #   * `expire_time` (and values are of the format YYYY-MM-DDTHH:MM:SSZ)
        #   * `size_bytes`
        #   You can combine multiple expressions by enclosing each expression in
        #   parentheses. By default, expressions are combined with AND logic, but
        #   you can specify AND, OR, and NOT logic explicitly.
        #   Here are a few examples:
        #   * `name:Howl` - The backup's name contains the string "howl".
        #   * `database:prod`
        #   - The database's name contains the string "prod".
        #   * `state:CREATING` - The backup is pending creation.
        #   * `state:READY` - The backup is fully created and ready for use.
        #   * `(name:howl) AND (create_time < \"2018-03-28T14:50:00Z\")`
        #   - The backup name contains the string "howl" and `create_time`
        #   of the backup is before 2018-03-28T14:50:00Z.
        #   * `expire_time < \"2018-03-28T14:50:00Z\"`
        #   - The backup `expire_time` is before 2018-03-28T14:50:00Z.
        #   * `size_bytes > 10000000000` - The backup's size is greater than 10GB
        # @param [Fixnum] page_size
        #   Number of backups to be returned in the response. If 0 or
        #   less, defaults to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token from a
        #   previous ListBackupsResponse to the same `parent` and with the same
        #   `filter`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListBackupsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListBackupsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_backups(parent, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/backups', options)
          command.response_representation = Google::Apis::SpannerV1::ListBackupsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListBackupsResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Updates a pending or completed Backup.
        # @param [String] name
        #   Output only for the CreateBackup operation.
        #   Required for the UpdateBackup operation.
        #   A globally unique identifier for the backup which cannot be
        #   changed. Values are of the form
        #   `projects/<project>/instances/<instance>/backups/a-z*[a-z0-9]`
        #   The final segment of the name must be between 2 and 60 characters
        #   in length.
        #   The backup is stored in the location(s) specified in the instance
        #   configuration of the instance containing the backup, identified
        #   by the prefix of the backup name of the form
        #   `projects/<project>/instances/<instance>`.
        # @param [Google::Apis::SpannerV1::Backup] backup_object
        # @param [String] update_mask
        #   Required. A mask specifying which fields (e.g. `expire_time`) in the
        #   Backup resource should be updated. This mask is relative to the Backup
        #   resource, not to the request message. The field mask must always be
        #   specified; this prevents any future fields from being erased accidentally
        #   by clients that do not know about them.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Backup] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Backup]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def patch_project_instance_backup(name, backup_object = nil, update_mask: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:patch, 'v1/{+name}', options)
          command.request_representation = Google::Apis::SpannerV1::Backup::Representation
          command.request_object = backup_object
          command.response_representation = Google::Apis::SpannerV1::Backup::Representation
          command.response_class = Google::Apis::SpannerV1::Backup
          command.params['name'] = name unless name.nil?
          command.query['updateMask'] = update_mask unless update_mask.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Sets the access control policy on a database or backup resource.
        # Replaces any existing policy.
        # Authorization requires `spanner.databases.setIamPolicy`
        # permission on resource.
        # For backups, authorization requires `spanner.backups.setIamPolicy`
        # permission on resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being set. The
        #   format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for databases resources.
        # @param [Google::Apis::SpannerV1::SetIamPolicyRequest] set_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def set_backup_iam_policy(resource, set_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:setIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::SetIamPolicyRequest::Representation
          command.request_object = set_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Returns permissions that the caller has on the specified database or backup
        # resource.
        # Attempting this RPC on a non-existent Cloud Spanner database will
        # result in a NOT_FOUND error if the user has
        # `spanner.databases.list` permission on the containing Cloud
        # Spanner instance. Otherwise returns an empty set of permissions.
        # Calling this method on a backup that does not exist will
        # result in a NOT_FOUND error if the user has
        # `spanner.backups.list` permission on the containing instance.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which permissions are being tested.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::TestIamPermissionsRequest] test_iam_permissions_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::TestIamPermissionsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::TestIamPermissionsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def test_backup_iam_permissions(resource, test_iam_permissions_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:testIamPermissions', options)
          command.request_representation = Google::Apis::SpannerV1::TestIamPermissionsRequest::Representation
          command.request_object = test_iam_permissions_request_object
          command.response_representation = Google::Apis::SpannerV1::TestIamPermissionsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::TestIamPermissionsResponse
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Starts asynchronous cancellation on a long-running operation.  The server
        # makes a best effort to cancel the operation, but success is not
        # guaranteed.  If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
        # Operations.GetOperation or
        # other methods to check whether the cancellation succeeded or whether the
        # operation completed despite cancellation. On successful cancellation,
        # the operation is not deleted; instead, it becomes an operation with
        # an Operation.error value with a google.rpc.Status.code of 1,
        # corresponding to `Code.CANCELLED`.
        # @param [String] name
        #   The name of the operation resource to be cancelled.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def cancel_project_instance_backup_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+name}:cancel', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Deletes a long-running operation. This method indicates that the client is
        # no longer interested in the operation result. It does not cancel the
        # operation. If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.
        # @param [String] name
        #   The name of the operation resource to be deleted.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance_backup_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the latest state of a long-running operation.  Clients can use this
        # method to poll the operation result at intervals as recommended by the API
        # service.
        # @param [String] name
        #   The name of the operation resource.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_backup_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists operations that match the specified filter in the request. If the
        # server doesn't support this method, it returns `UNIMPLEMENTED`.
        # NOTE: the `name` binding allows API services to override the binding
        # to use different resource name schemes, such as `users/*/operations`. To
        # override the binding, API services can add a binding such as
        # `"/v1/`name=users/*`/operations"` to their service configuration.
        # For backwards compatibility, the default name includes the operations
        # collection id, however overriding users must ensure the name binding
        # is the parent resource, without the operations collection id.
        # @param [String] name
        #   The name of the operation's parent resource.
        # @param [String] filter
        #   The standard list filter.
        # @param [Fixnum] page_size
        #   The standard list page size.
        # @param [String] page_token
        #   The standard list page token.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListOperationsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListOperationsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_backup_operations(name, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::ListOperationsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListOperationsResponse
          command.params['name'] = name unless name.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists database longrunning-operations.
        # A database operation has a name of the form
        # `projects/<project>/instances/<instance>/databases/<database>/operations/<
        # operation>`.
        # The long-running operation
        # metadata field type
        # `metadata.type_url` describes the type of the metadata. Operations returned
        # include those that have completed/failed/canceled within the last 7 days,
        # and pending operations.
        # @param [String] parent
        #   Required. The instance of the database operations.
        #   Values are of the form `projects/<project>/instances/<instance>`.
        # @param [String] filter
        #   An expression that filters the list of returned operations.
        #   A filter expression consists of a field name, a
        #   comparison operator, and a value for filtering.
        #   The value must be a string, a number, or a boolean. The comparison operator
        #   must be one of: `<`, `>`, `<=`, `>=`, `!=`, `=`, or `:`.
        #   Colon `:` is the contains operator. Filter rules are not case sensitive.
        #   The following fields in the Operation
        #   are eligible for filtering:
        #   * `name` - The name of the long-running operation
        #   * `done` - False if the operation is in progress, else true.
        #   * `metadata.@type` - the type of metadata. For example, the type string
        #   for RestoreDatabaseMetadata is
        #   `type.googleapis.com/google.spanner.admin.database.v1.
        #   RestoreDatabaseMetadata`.
        #   * `metadata.<field_name>` - any field in metadata.value.
        #   * `error` - Error associated with the long-running operation.
        #   * `response.@type` - the type of response.
        #   * `response.<field_name>` - any field in response.value.
        #   You can combine multiple expressions by enclosing each expression in
        #   parentheses. By default, expressions are combined with AND logic. However,
        #   you can specify AND, OR, and NOT logic explicitly.
        #   Here are a few examples:
        #   * `done:true` - The operation is complete.
        #   * `(metadata.@type=type.googleapis.com/google.spanner.admin.database.v1.
        #   RestoreDatabaseMetadata) AND` \
        #   `(metadata.source_type:BACKUP) AND` \
        #   `(metadata.backup_info.backup:backup_howl) AND` \
        #   `(metadata.name:restored_howl) AND` \
        #   `(metadata.progress.start_time < \"2018-03-28T14:50:00Z\") AND` \
        #   `(error:*)` - Return operations where:
        #   * The operation's metadata type is RestoreDatabaseMetadata.
        #   * The database is restored from a backup.
        #   * The backup name contains "backup_howl".
        #   * The restored database's name contains "restored_howl".
        #   * The operation started before 2018-03-28T14:50:00Z.
        #   * The operation resulted in an error.
        # @param [Fixnum] page_size
        #   Number of operations to be returned in the response. If 0 or
        #   less, defaults to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token
        #   from a previous ListDatabaseOperationsResponse to the
        #   same `parent` and with the same `filter`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListDatabaseOperationsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListDatabaseOperationsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_databaseoperations(parent, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/databaseOperations', options)
          command.response_representation = Google::Apis::SpannerV1::ListDatabaseOperationsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListDatabaseOperationsResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates a new Cloud Spanner database and starts to prepare it for serving.
        # The returned long-running operation will
        # have a name of the format `<database_name>/operations/<operation_id>` and
        # can be used to track preparation of the database. The
        # metadata field type is
        # CreateDatabaseMetadata. The
        # response field type is
        # Database, if successful.
        # @param [String] parent
        #   Required. The name of the instance that will serve the new database.
        #   Values are of the form `projects/<project>/instances/<instance>`.
        # @param [Google::Apis::SpannerV1::CreateDatabaseRequest] create_database_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def create_database(parent, create_database_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+parent}/databases', options)
          command.request_representation = Google::Apis::SpannerV1::CreateDatabaseRequest::Representation
          command.request_object = create_database_request_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['parent'] = parent unless parent.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Drops (aka deletes) a Cloud Spanner database.
        # Completed backups for the database will be retained according to their
        # `expire_time`.
        # @param [String] database
        #   Required. The database to be dropped.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def drop_project_instance_database_database(database, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+database}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['database'] = database unless database.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the state of a Cloud Spanner database.
        # @param [String] name
        #   Required. The name of the requested database. Values are of the form
        #   `projects/<project>/instances/<instance>/databases/<database>`.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Database] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Database]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_database(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Database::Representation
          command.response_class = Google::Apis::SpannerV1::Database
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Returns the schema of a Cloud Spanner database as a list of formatted
        # DDL statements. This method does not show pending schema updates, those may
        # be queried using the Operations API.
        # @param [String] database
        #   Required. The database whose schema we wish to get.
        #   Values are of the form
        #   `projects/<project>/instances/<instance>/databases/<database>`
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::GetDatabaseDdlResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::GetDatabaseDdlResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_database_ddl(database, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+database}/ddl', options)
          command.response_representation = Google::Apis::SpannerV1::GetDatabaseDdlResponse::Representation
          command.response_class = Google::Apis::SpannerV1::GetDatabaseDdlResponse
          command.params['database'] = database unless database.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the access control policy for a database or backup resource.
        # Returns an empty policy if a database or backup exists but does not have a
        # policy set.
        # Authorization requires `spanner.databases.getIamPolicy` permission on
        # resource.
        # For backups, authorization requires `spanner.backups.getIamPolicy`
        # permission on resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being retrieved.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::GetIamPolicyRequest] get_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_database_iam_policy(resource, get_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:getIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::GetIamPolicyRequest::Representation
          command.request_object = get_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists Cloud Spanner databases.
        # @param [String] parent
        #   Required. The instance whose databases should be listed.
        #   Values are of the form `projects/<project>/instances/<instance>`.
        # @param [Fixnum] page_size
        #   Number of databases to be returned in the response. If 0 or less,
        #   defaults to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token from a
        #   previous ListDatabasesResponse.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListDatabasesResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListDatabasesResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_databases(parent, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+parent}/databases', options)
          command.response_representation = Google::Apis::SpannerV1::ListDatabasesResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListDatabasesResponse
          command.params['parent'] = parent unless parent.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Create a new database by restoring from a completed backup. The new
        # database must be in the same project and in an instance with the same
        # instance configuration as the instance containing
        # the backup. The returned database long-running
        # operation has a name of the format
        # `projects/<project>/instances/<instance>/databases/<database>/operations/<
        # operation_id>`,
        # and can be used to track the progress of the operation, and to cancel it.
        # The metadata field type is
        # RestoreDatabaseMetadata.
        # The response type
        # is Database, if
        # successful. Cancelling the returned operation will stop the restore and
        # delete the database.
        # There can be only one database being restored into an instance at a time.
        # Once the restore operation completes, a new restore operation can be
        # initiated, without waiting for the optimize operation associated with the
        # first restore to complete.
        # @param [String] parent
        #   Required. The name of the instance in which to create the
        #   restored database. This instance must be in the same project and
        #   have the same instance configuration as the instance containing
        #   the source backup. Values are of the form
        #   `projects/<project>/instances/<instance>`.
        # @param [Google::Apis::SpannerV1::RestoreDatabaseRequest] restore_database_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def restore_database(parent, restore_database_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+parent}/databases:restore', options)
          command.request_representation = Google::Apis::SpannerV1::RestoreDatabaseRequest::Representation
          command.request_object = restore_database_request_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['parent'] = parent unless parent.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Sets the access control policy on a database or backup resource.
        # Replaces any existing policy.
        # Authorization requires `spanner.databases.setIamPolicy`
        # permission on resource.
        # For backups, authorization requires `spanner.backups.setIamPolicy`
        # permission on resource.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which the policy is being set. The
        #   format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for databases resources.
        # @param [Google::Apis::SpannerV1::SetIamPolicyRequest] set_iam_policy_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Policy] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Policy]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def set_database_iam_policy(resource, set_iam_policy_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:setIamPolicy', options)
          command.request_representation = Google::Apis::SpannerV1::SetIamPolicyRequest::Representation
          command.request_object = set_iam_policy_request_object
          command.response_representation = Google::Apis::SpannerV1::Policy::Representation
          command.response_class = Google::Apis::SpannerV1::Policy
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Returns permissions that the caller has on the specified database or backup
        # resource.
        # Attempting this RPC on a non-existent Cloud Spanner database will
        # result in a NOT_FOUND error if the user has
        # `spanner.databases.list` permission on the containing Cloud
        # Spanner instance. Otherwise returns an empty set of permissions.
        # Calling this method on a backup that does not exist will
        # result in a NOT_FOUND error if the user has
        # `spanner.backups.list` permission on the containing instance.
        # @param [String] resource
        #   REQUIRED: The Cloud Spanner resource for which permissions are being tested.
        #   The format is `projects/<project ID>/instances/<instance ID>` for instance
        #   resources and `projects/<project ID>/instances/<instance ID>/databases/<
        #   database ID>` for database resources.
        # @param [Google::Apis::SpannerV1::TestIamPermissionsRequest] test_iam_permissions_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::TestIamPermissionsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::TestIamPermissionsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def test_database_iam_permissions(resource, test_iam_permissions_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+resource}:testIamPermissions', options)
          command.request_representation = Google::Apis::SpannerV1::TestIamPermissionsRequest::Representation
          command.request_object = test_iam_permissions_request_object
          command.response_representation = Google::Apis::SpannerV1::TestIamPermissionsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::TestIamPermissionsResponse
          command.params['resource'] = resource unless resource.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Updates the schema of a Cloud Spanner database by
        # creating/altering/dropping tables, columns, indexes, etc. The returned
        # long-running operation will have a name of
        # the format `<database_name>/operations/<operation_id>` and can be used to
        # track execution of the schema change(s). The
        # metadata field type is
        # UpdateDatabaseDdlMetadata.  The operation has no response.
        # @param [String] database
        #   Required. The database to update.
        # @param [Google::Apis::SpannerV1::UpdateDatabaseDdlRequest] update_database_ddl_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def update_project_instance_database_ddl(database, update_database_ddl_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:patch, 'v1/{+database}/ddl', options)
          command.request_representation = Google::Apis::SpannerV1::UpdateDatabaseDdlRequest::Representation
          command.request_object = update_database_ddl_request_object
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['database'] = database unless database.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Starts asynchronous cancellation on a long-running operation.  The server
        # makes a best effort to cancel the operation, but success is not
        # guaranteed.  If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
        # Operations.GetOperation or
        # other methods to check whether the cancellation succeeded or whether the
        # operation completed despite cancellation. On successful cancellation,
        # the operation is not deleted; instead, it becomes an operation with
        # an Operation.error value with a google.rpc.Status.code of 1,
        # corresponding to `Code.CANCELLED`.
        # @param [String] name
        #   The name of the operation resource to be cancelled.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def cancel_project_instance_database_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+name}:cancel', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Deletes a long-running operation. This method indicates that the client is
        # no longer interested in the operation result. It does not cancel the
        # operation. If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.
        # @param [String] name
        #   The name of the operation resource to be deleted.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance_database_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the latest state of a long-running operation.  Clients can use this
        # method to poll the operation result at intervals as recommended by the API
        # service.
        # @param [String] name
        #   The name of the operation resource.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_database_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists operations that match the specified filter in the request. If the
        # server doesn't support this method, it returns `UNIMPLEMENTED`.
        # NOTE: the `name` binding allows API services to override the binding
        # to use different resource name schemes, such as `users/*/operations`. To
        # override the binding, API services can add a binding such as
        # `"/v1/`name=users/*`/operations"` to their service configuration.
        # For backwards compatibility, the default name includes the operations
        # collection id, however overriding users must ensure the name binding
        # is the parent resource, without the operations collection id.
        # @param [String] name
        #   The name of the operation's parent resource.
        # @param [String] filter
        #   The standard list filter.
        # @param [Fixnum] page_size
        #   The standard list page size.
        # @param [String] page_token
        #   The standard list page token.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListOperationsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListOperationsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_database_operations(name, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::ListOperationsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListOperationsResponse
          command.params['name'] = name unless name.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates multiple new sessions.
        # This API can be used to initialize a session cache on the clients.
        # See https://goo.gl/TgSFN2 for best practices on session cache management.
        # @param [String] database
        #   Required. The database in which the new sessions are created.
        # @param [Google::Apis::SpannerV1::BatchCreateSessionsRequest] batch_create_sessions_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::BatchCreateSessionsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::BatchCreateSessionsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def batch_create_sessions(database, batch_create_sessions_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+database}/sessions:batchCreate', options)
          command.request_representation = Google::Apis::SpannerV1::BatchCreateSessionsRequest::Representation
          command.request_object = batch_create_sessions_request_object
          command.response_representation = Google::Apis::SpannerV1::BatchCreateSessionsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::BatchCreateSessionsResponse
          command.params['database'] = database unless database.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Begins a new transaction. This step can often be skipped:
        # Read, ExecuteSql and
        # Commit can begin a new transaction as a
        # side-effect.
        # @param [String] session
        #   Required. The session in which the transaction runs.
        # @param [Google::Apis::SpannerV1::BeginTransactionRequest] begin_transaction_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Transaction] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Transaction]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def begin_session_transaction(session, begin_transaction_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:beginTransaction', options)
          command.request_representation = Google::Apis::SpannerV1::BeginTransactionRequest::Representation
          command.request_object = begin_transaction_request_object
          command.response_representation = Google::Apis::SpannerV1::Transaction::Representation
          command.response_class = Google::Apis::SpannerV1::Transaction
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Commits a transaction. The request includes the mutations to be
        # applied to rows in the database.
        # `Commit` might return an `ABORTED` error. This can occur at any time;
        # commonly, the cause is conflicts with concurrent
        # transactions. However, it can also happen for a variety of other
        # reasons. If `Commit` returns `ABORTED`, the caller should re-attempt
        # the transaction from the beginning, re-using the same session.
        # On very rare occasions, `Commit` might return `UNKNOWN`. This can happen,
        # for example, if the client job experiences a 1+ hour networking failure.
        # At that point, Cloud Spanner has lost track of the transaction outcome and
        # we recommend that you perform another read from the database to see the
        # state of things as they are now.
        # @param [String] session
        #   Required. The session in which the transaction to be committed is running.
        # @param [Google::Apis::SpannerV1::CommitRequest] commit_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::CommitResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::CommitResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def commit_session(session, commit_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:commit', options)
          command.request_representation = Google::Apis::SpannerV1::CommitRequest::Representation
          command.request_object = commit_request_object
          command.response_representation = Google::Apis::SpannerV1::CommitResponse::Representation
          command.response_class = Google::Apis::SpannerV1::CommitResponse
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates a new session. A session can be used to perform
        # transactions that read and/or modify data in a Cloud Spanner database.
        # Sessions are meant to be reused for many consecutive
        # transactions.
        # Sessions can only execute one transaction at a time. To execute
        # multiple concurrent read-write/write-only transactions, create
        # multiple sessions. Note that standalone reads and queries use a
        # transaction internally, and count toward the one transaction
        # limit.
        # Active sessions use additional server resources, so it is a good idea to
        # delete idle and unneeded sessions.
        # Aside from explicit deletes, Cloud Spanner may delete sessions for which no
        # operations are sent for more than an hour. If a session is deleted,
        # requests to it return `NOT_FOUND`.
        # Idle sessions can be kept alive by sending a trivial SQL query
        # periodically, e.g., `"SELECT 1"`.
        # @param [String] database
        #   Required. The database in which the new session is created.
        # @param [Google::Apis::SpannerV1::CreateSessionRequest] create_session_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Session] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Session]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def create_project_instance_database_session(database, create_session_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+database}/sessions', options)
          command.request_representation = Google::Apis::SpannerV1::CreateSessionRequest::Representation
          command.request_object = create_session_request_object
          command.response_representation = Google::Apis::SpannerV1::Session::Representation
          command.response_class = Google::Apis::SpannerV1::Session
          command.params['database'] = database unless database.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Ends a session, releasing server resources associated with it. This will
        # asynchronously trigger cancellation of any operations that are running with
        # this session.
        # @param [String] name
        #   Required. The name of the session to delete.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance_database_session(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Executes a batch of SQL DML statements. This method allows many statements
        # to be run with lower latency than submitting them sequentially with
        # ExecuteSql.
        # Statements are executed in sequential order. A request can succeed even if
        # a statement fails. The ExecuteBatchDmlResponse.status field in the
        # response provides information about the statement that failed. Clients must
        # inspect this field to determine whether an error occurred.
        # Execution stops after the first failed statement; the remaining statements
        # are not executed.
        # @param [String] session
        #   Required. The session in which the DML statements should be performed.
        # @param [Google::Apis::SpannerV1::ExecuteBatchDmlRequest] execute_batch_dml_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ExecuteBatchDmlResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ExecuteBatchDmlResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def execute_session_batch_dml(session, execute_batch_dml_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:executeBatchDml', options)
          command.request_representation = Google::Apis::SpannerV1::ExecuteBatchDmlRequest::Representation
          command.request_object = execute_batch_dml_request_object
          command.response_representation = Google::Apis::SpannerV1::ExecuteBatchDmlResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ExecuteBatchDmlResponse
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Executes an SQL statement, returning all results in a single reply. This
        # method cannot be used to return a result set larger than 10 MiB;
        # if the query yields more data than that, the query fails with
        # a `FAILED_PRECONDITION` error.
        # Operations inside read-write transactions might return `ABORTED`. If
        # this occurs, the application should restart the transaction from
        # the beginning. See Transaction for more details.
        # Larger result sets can be fetched in streaming fashion by calling
        # ExecuteStreamingSql instead.
        # @param [String] session
        #   Required. The session in which the SQL query should be performed.
        # @param [Google::Apis::SpannerV1::ExecuteSqlRequest] execute_sql_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ResultSet] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ResultSet]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def execute_session_sql(session, execute_sql_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:executeSql', options)
          command.request_representation = Google::Apis::SpannerV1::ExecuteSqlRequest::Representation
          command.request_object = execute_sql_request_object
          command.response_representation = Google::Apis::SpannerV1::ResultSet::Representation
          command.response_class = Google::Apis::SpannerV1::ResultSet
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Like ExecuteSql, except returns the result
        # set as a stream. Unlike ExecuteSql, there
        # is no limit on the size of the returned result set. However, no
        # individual row in the result set can exceed 100 MiB, and no
        # column value can exceed 10 MiB.
        # @param [String] session
        #   Required. The session in which the SQL query should be performed.
        # @param [Google::Apis::SpannerV1::ExecuteSqlRequest] execute_sql_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::PartialResultSet] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::PartialResultSet]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def execute_project_instance_database_session_streaming_sql(session, execute_sql_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:executeStreamingSql', options)
          command.request_representation = Google::Apis::SpannerV1::ExecuteSqlRequest::Representation
          command.request_object = execute_sql_request_object
          command.response_representation = Google::Apis::SpannerV1::PartialResultSet::Representation
          command.response_class = Google::Apis::SpannerV1::PartialResultSet
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets a session. Returns `NOT_FOUND` if the session does not exist.
        # This is mainly useful for determining whether a session is still
        # alive.
        # @param [String] name
        #   Required. The name of the session to retrieve.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Session] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Session]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_database_session(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Session::Representation
          command.response_class = Google::Apis::SpannerV1::Session
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists all sessions in a given database.
        # @param [String] database
        #   Required. The database in which to list sessions.
        # @param [String] filter
        #   An expression for filtering the results of the request. Filter rules are
        #   case insensitive. The fields eligible for filtering are:
        #   * `labels.key` where key is the name of a label
        #   Some examples of using filters are:
        #   * `labels.env:*` --> The session has the label "env".
        #   * `labels.env:dev` --> The session has the label "env" and the value of
        #   the label contains the string "dev".
        # @param [Fixnum] page_size
        #   Number of sessions to be returned in the response. If 0 or less, defaults
        #   to the server's maximum allowed page size.
        # @param [String] page_token
        #   If non-empty, `page_token` should contain a
        #   next_page_token from a previous
        #   ListSessionsResponse.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListSessionsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListSessionsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_database_sessions(database, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+database}/sessions', options)
          command.response_representation = Google::Apis::SpannerV1::ListSessionsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListSessionsResponse
          command.params['database'] = database unless database.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates a set of partition tokens that can be used to execute a query
        # operation in parallel.  Each of the returned partition tokens can be used
        # by ExecuteStreamingSql to specify a subset
        # of the query result to read.  The same session and read-only transaction
        # must be used by the PartitionQueryRequest used to create the
        # partition tokens and the ExecuteSqlRequests that use the partition tokens.
        # Partition tokens become invalid when the session used to create them
        # is deleted, is idle for too long, begins a new transaction, or becomes too
        # old.  When any of these happen, it is not possible to resume the query, and
        # the whole operation must be restarted from the beginning.
        # @param [String] session
        #   Required. The session used to create the partitions.
        # @param [Google::Apis::SpannerV1::PartitionQueryRequest] partition_query_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::PartitionResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::PartitionResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def partition_session_query(session, partition_query_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:partitionQuery', options)
          command.request_representation = Google::Apis::SpannerV1::PartitionQueryRequest::Representation
          command.request_object = partition_query_request_object
          command.response_representation = Google::Apis::SpannerV1::PartitionResponse::Representation
          command.response_class = Google::Apis::SpannerV1::PartitionResponse
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Creates a set of partition tokens that can be used to execute a read
        # operation in parallel.  Each of the returned partition tokens can be used
        # by StreamingRead to specify a subset of the read
        # result to read.  The same session and read-only transaction must be used by
        # the PartitionReadRequest used to create the partition tokens and the
        # ReadRequests that use the partition tokens.  There are no ordering
        # guarantees on rows returned among the returned partition tokens, or even
        # within each individual StreamingRead call issued with a partition_token.
        # Partition tokens become invalid when the session used to create them
        # is deleted, is idle for too long, begins a new transaction, or becomes too
        # old.  When any of these happen, it is not possible to resume the read, and
        # the whole operation must be restarted from the beginning.
        # @param [String] session
        #   Required. The session used to create the partitions.
        # @param [Google::Apis::SpannerV1::PartitionReadRequest] partition_read_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::PartitionResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::PartitionResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def partition_session_read(session, partition_read_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:partitionRead', options)
          command.request_representation = Google::Apis::SpannerV1::PartitionReadRequest::Representation
          command.request_object = partition_read_request_object
          command.response_representation = Google::Apis::SpannerV1::PartitionResponse::Representation
          command.response_class = Google::Apis::SpannerV1::PartitionResponse
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Reads rows from the database using key lookups and scans, as a
        # simple key/value style alternative to
        # ExecuteSql.  This method cannot be used to
        # return a result set larger than 10 MiB; if the read matches more
        # data than that, the read fails with a `FAILED_PRECONDITION`
        # error.
        # Reads inside read-write transactions might return `ABORTED`. If
        # this occurs, the application should restart the transaction from
        # the beginning. See Transaction for more details.
        # Larger result sets can be yielded in streaming fashion by calling
        # StreamingRead instead.
        # @param [String] session
        #   Required. The session in which the read should be performed.
        # @param [Google::Apis::SpannerV1::ReadRequest] read_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ResultSet] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ResultSet]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def read_session(session, read_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:read', options)
          command.request_representation = Google::Apis::SpannerV1::ReadRequest::Representation
          command.request_object = read_request_object
          command.response_representation = Google::Apis::SpannerV1::ResultSet::Representation
          command.response_class = Google::Apis::SpannerV1::ResultSet
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Rolls back a transaction, releasing any locks it holds. It is a good
        # idea to call this for any transaction that includes one or more
        # Read or ExecuteSql requests and
        # ultimately decides not to commit.
        # `Rollback` returns `OK` if it successfully aborts the transaction, the
        # transaction was already aborted, or the transaction is not
        # found. `Rollback` never returns `ABORTED`.
        # @param [String] session
        #   Required. The session in which the transaction to roll back is running.
        # @param [Google::Apis::SpannerV1::RollbackRequest] rollback_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def rollback_session(session, rollback_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:rollback', options)
          command.request_representation = Google::Apis::SpannerV1::RollbackRequest::Representation
          command.request_object = rollback_request_object
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Like Read, except returns the result set as a
        # stream. Unlike Read, there is no limit on the
        # size of the returned result set. However, no individual row in
        # the result set can exceed 100 MiB, and no column value can exceed
        # 10 MiB.
        # @param [String] session
        #   Required. The session in which the read should be performed.
        # @param [Google::Apis::SpannerV1::ReadRequest] read_request_object
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::PartialResultSet] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::PartialResultSet]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def streaming_project_instance_database_session_read(session, read_request_object = nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+session}:streamingRead', options)
          command.request_representation = Google::Apis::SpannerV1::ReadRequest::Representation
          command.request_object = read_request_object
          command.response_representation = Google::Apis::SpannerV1::PartialResultSet::Representation
          command.response_class = Google::Apis::SpannerV1::PartialResultSet
          command.params['session'] = session unless session.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Starts asynchronous cancellation on a long-running operation.  The server
        # makes a best effort to cancel the operation, but success is not
        # guaranteed.  If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.  Clients can use
        # Operations.GetOperation or
        # other methods to check whether the cancellation succeeded or whether the
        # operation completed despite cancellation. On successful cancellation,
        # the operation is not deleted; instead, it becomes an operation with
        # an Operation.error value with a google.rpc.Status.code of 1,
        # corresponding to `Code.CANCELLED`.
        # @param [String] name
        #   The name of the operation resource to be cancelled.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def cancel_project_instance_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:post, 'v1/{+name}:cancel', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Deletes a long-running operation. This method indicates that the client is
        # no longer interested in the operation result. It does not cancel the
        # operation. If the server doesn't support this method, it returns
        # `google.rpc.Code.UNIMPLEMENTED`.
        # @param [String] name
        #   The name of the operation resource to be deleted.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Empty] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Empty]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def delete_project_instance_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:delete, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Empty::Representation
          command.response_class = Google::Apis::SpannerV1::Empty
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Gets the latest state of a long-running operation.  Clients can use this
        # method to poll the operation result at intervals as recommended by the API
        # service.
        # @param [String] name
        #   The name of the operation resource.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::Operation] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::Operation]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def get_project_instance_operation(name, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::Operation::Representation
          command.response_class = Google::Apis::SpannerV1::Operation
          command.params['name'] = name unless name.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end
        
        # Lists operations that match the specified filter in the request. If the
        # server doesn't support this method, it returns `UNIMPLEMENTED`.
        # NOTE: the `name` binding allows API services to override the binding
        # to use different resource name schemes, such as `users/*/operations`. To
        # override the binding, API services can add a binding such as
        # `"/v1/`name=users/*`/operations"` to their service configuration.
        # For backwards compatibility, the default name includes the operations
        # collection id, however overriding users must ensure the name binding
        # is the parent resource, without the operations collection id.
        # @param [String] name
        #   The name of the operation's parent resource.
        # @param [String] filter
        #   The standard list filter.
        # @param [Fixnum] page_size
        #   The standard list page size.
        # @param [String] page_token
        #   The standard list page token.
        # @param [String] fields
        #   Selector specifying which fields to include in a partial response.
        # @param [String] quota_user
        #   Available to use for quota purposes for server-side applications. Can be any
        #   arbitrary string assigned to a user, but should not exceed 40 characters.
        # @param [Google::Apis::RequestOptions] options
        #   Request-specific options
        #
        # @yield [result, err] Result & error if block supplied
        # @yieldparam result [Google::Apis::SpannerV1::ListOperationsResponse] parsed result object
        # @yieldparam err [StandardError] error object if request failed
        #
        # @return [Google::Apis::SpannerV1::ListOperationsResponse]
        #
        # @raise [Google::Apis::ServerError] An error occurred on the server and the request can be retried
        # @raise [Google::Apis::ClientError] The request is invalid and should not be retried without modification
        # @raise [Google::Apis::AuthorizationError] Authorization is required
        def list_project_instance_operations(name, filter: nil, page_size: nil, page_token: nil, fields: nil, quota_user: nil, options: nil, &block)
          command = make_simple_command(:get, 'v1/{+name}', options)
          command.response_representation = Google::Apis::SpannerV1::ListOperationsResponse::Representation
          command.response_class = Google::Apis::SpannerV1::ListOperationsResponse
          command.params['name'] = name unless name.nil?
          command.query['filter'] = filter unless filter.nil?
          command.query['pageSize'] = page_size unless page_size.nil?
          command.query['pageToken'] = page_token unless page_token.nil?
          command.query['fields'] = fields unless fields.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
          execute_or_queue_command(command, &block)
        end

        protected

        def apply_command_defaults(command)
          command.query['key'] = key unless key.nil?
          command.query['quotaUser'] = quota_user unless quota_user.nil?
        end
      end
    end
  end
end