# WARNING ABOUT GENERATED CODE
#
# This file is generated. See the contributing for info on making contributions:
# https://github.com/aws/aws-sdk-ruby/blob/master/CONTRIBUTING.md
#
# WARNING ABOUT GENERATED CODE

module Aws
  module Redshift
    module Types

      # Describes an AWS customer account authorized to restore a snapshot.
      # @!attribute [rw] account_id
      #   The identifier of an AWS customer account authorized to restore a
      #   snapshot.
      #   @return [String]
      class AccountWithRestoreAccess < Struct.new(
        :account_id)
        include Aws::Structure
      end

      # @note When making an API call, pass AuthorizeClusterSecurityGroupIngressMessage
      #   data as a hash:
      #
      #       {
      #         cluster_security_group_name: "String", # required
      #         cidrip: "String",
      #         ec2_security_group_name: "String",
      #         ec2_security_group_owner_id: "String",
      #       }
      # @!attribute [rw] cluster_security_group_name
      #   The name of the security group to which the ingress rule is added.
      #   @return [String]
      #
      # @!attribute [rw] cidrip
      #   The IP range to be added the Amazon Redshift security group.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_name
      #   The EC2 security group to be added the Amazon Redshift security
      #   group.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_owner_id
      #   The AWS account number of the owner of the security group specified
      #   by the *EC2SecurityGroupName* parameter. The AWS Access Key ID is
      #   not an acceptable value.
      #
      #   Example: `111122223333`
      #   @return [String]
      class AuthorizeClusterSecurityGroupIngressMessage < Struct.new(
        :cluster_security_group_name,
        :cidrip,
        :ec2_security_group_name,
        :ec2_security_group_owner_id)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_security_group
      #   Describes a security group.
      #   @return [Types::ClusterSecurityGroup]
      class AuthorizeClusterSecurityGroupIngressResult < Struct.new(
        :cluster_security_group)
        include Aws::Structure
      end

      # @note When making an API call, pass AuthorizeSnapshotAccessMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_identifier: "String", # required
      #         snapshot_cluster_identifier: "String",
      #         account_with_restore_access: "String", # required
      #       }
      # @!attribute [rw] snapshot_identifier
      #   The identifier of the snapshot the account is authorized to restore.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_cluster_identifier
      #   The identifier of the cluster the snapshot was created from. This
      #   parameter is required if your IAM user has a policy containing a
      #   snapshot resource element that specifies anything other than * for
      #   the cluster name.
      #   @return [String]
      #
      # @!attribute [rw] account_with_restore_access
      #   The identifier of the AWS customer account authorized to restore the
      #   specified snapshot.
      #   @return [String]
      class AuthorizeSnapshotAccessMessage < Struct.new(
        :snapshot_identifier,
        :snapshot_cluster_identifier,
        :account_with_restore_access)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot
      #   Describes a snapshot.
      #   @return [Types::Snapshot]
      class AuthorizeSnapshotAccessResult < Struct.new(
        :snapshot)
        include Aws::Structure
      end

      # Describes an availability zone.
      # @!attribute [rw] name
      #   The name of the availability zone.
      #   @return [String]
      class AvailabilityZone < Struct.new(
        :name)
        include Aws::Structure
      end

      # Describes a cluster.
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the cluster.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type for the nodes in the cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_status
      #   The current state of the cluster. Possible values are the following:
      #
      #   * `available`
      #
      #   * `creating`
      #
      #   * `deleting`
      #
      #   * `final-snapshot`
      #
      #   * `hardware-failure`
      #
      #   * `incompatible-hsm`
      #
      #   * `incompatible-network`
      #
      #   * `incompatible-parameters`
      #
      #   * `incompatible-restore`
      #
      #   * `modifying`
      #
      #   * `rebooting`
      #
      #   * `renaming`
      #
      #   * `resizing`
      #
      #   * `rotating-keys`
      #
      #   * `storage-full`
      #
      #   * `updating-hsm`
      #   @return [String]
      #
      # @!attribute [rw] modify_status
      #   The status of a modify operation, if any, initiated for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] master_username
      #   The master user name for the cluster. This name is used to connect
      #   to the database that is specified in the **DBName** parameter.
      #   @return [String]
      #
      # @!attribute [rw] db_name
      #   The name of the initial database that was created when the cluster
      #   was created. This same name is returned for the life of the cluster.
      #   If an initial database was not specified, a database named `dev`dev
      #   was created by default.
      #   @return [String]
      #
      # @!attribute [rw] endpoint
      #   The connection endpoint.
      #   @return [Types::Endpoint]
      #
      # @!attribute [rw] cluster_create_time
      #   The date and time that the cluster was created.
      #   @return [Time]
      #
      # @!attribute [rw] automated_snapshot_retention_period
      #   The number of days that automatic cluster snapshots are retained.
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_security_groups
      #   A list of cluster security group that are associated with the
      #   cluster. Each security group is represented by an element that
      #   contains `ClusterSecurityGroup.Name` and
      #   `ClusterSecurityGroup.Status` subelements.
      #
      #   Cluster security groups are used when the cluster is not created in
      #   an Amazon Virtual Private Cloud (VPC). Clusters that are created in
      #   a VPC use VPC security groups, which are listed by the
      #   **VpcSecurityGroups** parameter.
      #   @return [Array<Types::ClusterSecurityGroupMembership>]
      #
      # @!attribute [rw] vpc_security_groups
      #   A list of Amazon Virtual Private Cloud (Amazon VPC) security groups
      #   that are associated with the cluster. This parameter is returned
      #   only if the cluster is in a VPC.
      #   @return [Array<Types::VpcSecurityGroupMembership>]
      #
      # @!attribute [rw] cluster_parameter_groups
      #   The list of cluster parameter groups that are associated with this
      #   cluster. Each parameter group in the list is returned with its
      #   status.
      #   @return [Array<Types::ClusterParameterGroupStatus>]
      #
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the subnet group that is associated with the cluster.
      #   This parameter is valid only when the cluster is in a VPC.
      #   @return [String]
      #
      # @!attribute [rw] vpc_id
      #   The identifier of the VPC the cluster is in, if the cluster is in a
      #   VPC.
      #   @return [String]
      #
      # @!attribute [rw] availability_zone
      #   The name of the Availability Zone in which the cluster is located.
      #   @return [String]
      #
      # @!attribute [rw] preferred_maintenance_window
      #   The weekly time range, in Universal Coordinated Time (UTC), during
      #   which system maintenance can occur.
      #   @return [String]
      #
      # @!attribute [rw] pending_modified_values
      #   A value that, if present, indicates that changes to the cluster are
      #   pending. Specific pending changes are identified by subelements.
      #   @return [Types::PendingModifiedValues]
      #
      # @!attribute [rw] cluster_version
      #   The version ID of the Amazon Redshift engine that is running on the
      #   cluster.
      #   @return [String]
      #
      # @!attribute [rw] allow_version_upgrade
      #   A Boolean value that, if `true`, indicates that major version
      #   upgrades will be applied automatically to the cluster during the
      #   maintenance window.
      #   @return [Boolean]
      #
      # @!attribute [rw] number_of_nodes
      #   The number of compute nodes in the cluster.
      #   @return [Integer]
      #
      # @!attribute [rw] publicly_accessible
      #   A Boolean value that, if `true`, indicates that the cluster can be
      #   accessed from a public network.
      #   @return [Boolean]
      #
      # @!attribute [rw] encrypted
      #   A Boolean value that, if `true`, indicates that data in the cluster
      #   is encrypted at rest.
      #   @return [Boolean]
      #
      # @!attribute [rw] restore_status
      #   A value that describes the status of a cluster restore action. This
      #   parameter returns null if the cluster was not created by restoring a
      #   snapshot.
      #   @return [Types::RestoreStatus]
      #
      # @!attribute [rw] hsm_status
      #   A value that reports whether the Amazon Redshift cluster has
      #   finished applying any hardware security module (HSM) settings
      #   changes specified in a modify cluster command.
      #
      #   Values: active, applying
      #   @return [Types::HsmStatus]
      #
      # @!attribute [rw] cluster_snapshot_copy_status
      #   A value that returns the destination region and retention period
      #   that are configured for cross-region snapshot copy.
      #   @return [Types::ClusterSnapshotCopyStatus]
      #
      # @!attribute [rw] cluster_public_key
      #   The public key for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_nodes
      #   The nodes in the cluster.
      #   @return [Array<Types::ClusterNode>]
      #
      # @!attribute [rw] elastic_ip_status
      #   The status of the elastic IP (EIP) address.
      #   @return [Types::ElasticIpStatus]
      #
      # @!attribute [rw] cluster_revision_number
      #   The specific revision number of the database in the cluster.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the cluster.
      #   @return [Array<Types::Tag>]
      #
      # @!attribute [rw] kms_key_id
      #   The AWS Key Management Service (AWS KMS) key ID of the encryption
      #   key used to encrypt data in the cluster.
      #   @return [String]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      #
      # @!attribute [rw] iam_roles
      #   A list of AWS Identity and Access Management (IAM) roles that can be
      #   used by the cluster to access other AWS services.
      #   @return [Array<Types::ClusterIamRole>]
      class Cluster < Struct.new(
        :cluster_identifier,
        :node_type,
        :cluster_status,
        :modify_status,
        :master_username,
        :db_name,
        :endpoint,
        :cluster_create_time,
        :automated_snapshot_retention_period,
        :cluster_security_groups,
        :vpc_security_groups,
        :cluster_parameter_groups,
        :cluster_subnet_group_name,
        :vpc_id,
        :availability_zone,
        :preferred_maintenance_window,
        :pending_modified_values,
        :cluster_version,
        :allow_version_upgrade,
        :number_of_nodes,
        :publicly_accessible,
        :encrypted,
        :restore_status,
        :hsm_status,
        :cluster_snapshot_copy_status,
        :cluster_public_key,
        :cluster_nodes,
        :elastic_ip_status,
        :cluster_revision_number,
        :tags,
        :kms_key_id,
        :enhanced_vpc_routing,
        :iam_roles)
        include Aws::Structure
      end

      # An AWS Identity and Access Management (IAM) role that can be used by
      # the associated Amazon Redshift cluster to access other AWS services.
      # @!attribute [rw] iam_role_arn
      #   The Amazon Resource Name (ARN) of the IAM role, for example,
      #   `arn:aws:iam::123456789012:role/RedshiftCopyUnload`.
      #   @return [String]
      #
      # @!attribute [rw] apply_status
      #   A value that describes the status of the IAM role's association
      #   with an Amazon Redshift cluster.
      #
      #   The following are possible statuses and descriptions.
      #
      #   * `in-sync`\: The role is available for use by the cluster.
      #
      #   * `adding`\: The role is in the process of being associated with the
      #     cluster.
      #
      #   * `removing`\: The role is in the process of being disassociated
      #     with the cluster.
      #   @return [String]
      class ClusterIamRole < Struct.new(
        :iam_role_arn,
        :apply_status)
        include Aws::Structure
      end

      # The identifier of a node in a cluster.
      # @!attribute [rw] node_role
      #   Whether the node is a leader node or a compute node.
      #   @return [String]
      #
      # @!attribute [rw] private_ip_address
      #   The private IP address of a node within a cluster.
      #   @return [String]
      #
      # @!attribute [rw] public_ip_address
      #   The public IP address of a node within a cluster.
      #   @return [String]
      class ClusterNode < Struct.new(
        :node_role,
        :private_ip_address,
        :public_ip_address)
        include Aws::Structure
      end

      # Describes a parameter group.
      # @!attribute [rw] parameter_group_name
      #   The name of the cluster parameter group.
      #   @return [String]
      #
      # @!attribute [rw] parameter_group_family
      #   The name of the cluster parameter group family that this cluster
      #   parameter group is compatible with.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   The description of the parameter group.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the cluster parameter group.
      #   @return [Array<Types::Tag>]
      class ClusterParameterGroup < Struct.new(
        :parameter_group_name,
        :parameter_group_family,
        :description,
        :tags)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusterParameters action.
      # @!attribute [rw] parameters
      #   A list of Parameter instances. Each instance lists the parameters of
      #   one cluster parameter group.
      #   @return [Array<Types::Parameter>]
      #
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      class ClusterParameterGroupDetails < Struct.new(
        :parameters,
        :marker)
        include Aws::Structure
      end

      # @!attribute [rw] parameter_group_name
      #   The name of the cluster parameter group.
      #   @return [String]
      #
      # @!attribute [rw] parameter_group_status
      #   The status of the parameter group. For example, if you made a change
      #   to a parameter group name-value pair, then the change could be
      #   pending a reboot of an associated cluster.
      #   @return [String]
      class ClusterParameterGroupNameMessage < Struct.new(
        :parameter_group_name,
        :parameter_group_status)
        include Aws::Structure
      end

      # Describes the status of a parameter group.
      # @!attribute [rw] parameter_group_name
      #   The name of the cluster parameter group.
      #   @return [String]
      #
      # @!attribute [rw] parameter_apply_status
      #   The status of parameter updates.
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_status_list
      #   The list of parameter statuses.
      #
      #   For more information about parameters and parameter groups, go to
      #   [Amazon Redshift Parameter Groups][1] in the *Amazon Redshift
      #   Cluster Management Guide*.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html
      #   @return [Array<Types::ClusterParameterStatus>]
      class ClusterParameterGroupStatus < Struct.new(
        :parameter_group_name,
        :parameter_apply_status,
        :cluster_parameter_status_list)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusterParameterGroups action.
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] parameter_groups
      #   A list of ClusterParameterGroup instances. Each instance describes
      #   one cluster parameter group.
      #   @return [Array<Types::ClusterParameterGroup>]
      class ClusterParameterGroupsMessage < Struct.new(
        :marker,
        :parameter_groups)
        include Aws::Structure
      end

      # Describes the status of a parameter group.
      # @!attribute [rw] parameter_name
      #   The name of the parameter.
      #   @return [String]
      #
      # @!attribute [rw] parameter_apply_status
      #   The status of the parameter that indicates whether the parameter is
      #   in sync with the database, waiting for a cluster reboot, or
      #   encountered an error when being applied.
      #
      #   The following are possible statuses and descriptions.
      #
      #   * `in-sync`\: The parameter value is in sync with the database.
      #
      #   * `pending-reboot`\: The parameter value will be applied after the
      #     cluster reboots.
      #
      #   * `applying`\: The parameter value is being applied to the database.
      #
      #   * `invalid-parameter`\: Cannot apply the parameter value because it
      #     has an invalid value or syntax.
      #
      #   * `apply-deferred`\: The parameter contains static property changes.
      #     The changes are deferred until the cluster reboots.
      #
      #   * `apply-error`\: Cannot connect to the cluster. The parameter
      #     change will be applied after the cluster reboots.
      #
      #   * `unknown-error`\: Cannot apply the parameter change right now. The
      #     change will be applied after the cluster reboots.
      #   @return [String]
      #
      # @!attribute [rw] parameter_apply_error_description
      #   The error that prevented the parameter from being applied to the
      #   database.
      #   @return [String]
      class ClusterParameterStatus < Struct.new(
        :parameter_name,
        :parameter_apply_status,
        :parameter_apply_error_description)
        include Aws::Structure
      end

      # Describes a security group.
      # @!attribute [rw] cluster_security_group_name
      #   The name of the cluster security group to which the operation was
      #   applied.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A description of the security group.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_groups
      #   A list of EC2 security groups that are permitted to access clusters
      #   associated with this cluster security group.
      #   @return [Array<Types::EC2SecurityGroup>]
      #
      # @!attribute [rw] ip_ranges
      #   A list of IP ranges (CIDR blocks) that are permitted to access
      #   clusters associated with this cluster security group.
      #   @return [Array<Types::IPRange>]
      #
      # @!attribute [rw] tags
      #   The list of tags for the cluster security group.
      #   @return [Array<Types::Tag>]
      class ClusterSecurityGroup < Struct.new(
        :cluster_security_group_name,
        :description,
        :ec2_security_groups,
        :ip_ranges,
        :tags)
        include Aws::Structure
      end

      # Describes a cluster security group.
      # @!attribute [rw] cluster_security_group_name
      #   The name of the cluster security group.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   The status of the cluster security group.
      #   @return [String]
      class ClusterSecurityGroupMembership < Struct.new(
        :cluster_security_group_name,
        :status)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] cluster_security_groups
      #   A list of ClusterSecurityGroup instances.
      #   @return [Array<Types::ClusterSecurityGroup>]
      class ClusterSecurityGroupMessage < Struct.new(
        :marker,
        :cluster_security_groups)
        include Aws::Structure
      end

      # Returns the destination region and retention period that are
      # configured for cross-region snapshot copy.
      # @!attribute [rw] destination_region
      #   The destination region that snapshots are automatically copied to
      #   when cross-region snapshot copy is enabled.
      #   @return [String]
      #
      # @!attribute [rw] retention_period
      #   The number of days that automated snapshots are retained in the
      #   destination region after they are copied from a source region.
      #   @return [Integer]
      #
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant.
      #   @return [String]
      class ClusterSnapshotCopyStatus < Struct.new(
        :destination_region,
        :retention_period,
        :snapshot_copy_grant_name)
        include Aws::Structure
      end

      # Describes a subnet group.
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the cluster subnet group.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   The description of the cluster subnet group.
      #   @return [String]
      #
      # @!attribute [rw] vpc_id
      #   The VPC ID of the cluster subnet group.
      #   @return [String]
      #
      # @!attribute [rw] subnet_group_status
      #   The status of the cluster subnet group. Possible values are
      #   `Complete`, `Incomplete` and `Invalid`.
      #   @return [String]
      #
      # @!attribute [rw] subnets
      #   A list of the VPC Subnet elements.
      #   @return [Array<Types::Subnet>]
      #
      # @!attribute [rw] tags
      #   The list of tags for the cluster subnet group.
      #   @return [Array<Types::Tag>]
      class ClusterSubnetGroup < Struct.new(
        :cluster_subnet_group_name,
        :description,
        :vpc_id,
        :subnet_group_status,
        :subnets,
        :tags)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusterSubnetGroups action.
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] cluster_subnet_groups
      #   A list of ClusterSubnetGroup instances.
      #   @return [Array<Types::ClusterSubnetGroup>]
      class ClusterSubnetGroupMessage < Struct.new(
        :marker,
        :cluster_subnet_groups)
        include Aws::Structure
      end

      # Describes a cluster version, including the parameter group family and
      # description of the version.
      # @!attribute [rw] cluster_version
      #   The version number used by the cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_group_family
      #   The name of the cluster parameter group family for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   The description of the cluster version.
      #   @return [String]
      class ClusterVersion < Struct.new(
        :cluster_version,
        :cluster_parameter_group_family,
        :description)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusterVersions action.
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] cluster_versions
      #   A list of `Version` elements.
      #   @return [Array<Types::ClusterVersion>]
      class ClusterVersionsMessage < Struct.new(
        :marker,
        :cluster_versions)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusters action.
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] clusters
      #   A list of `Cluster` objects, where each object describes one
      #   cluster.
      #   @return [Array<Types::Cluster>]
      class ClustersMessage < Struct.new(
        :marker,
        :clusters)
        include Aws::Structure
      end

      # @note When making an API call, pass CopyClusterSnapshotMessage
      #   data as a hash:
      #
      #       {
      #         source_snapshot_identifier: "String", # required
      #         source_snapshot_cluster_identifier: "String",
      #         target_snapshot_identifier: "String", # required
      #       }
      # @!attribute [rw] source_snapshot_identifier
      #   The identifier for the source snapshot.
      #
      #   Constraints:
      #
      #   * Must be the identifier for a valid automated snapshot whose state
      #     is `available`.
      #
      #   ^
      #   @return [String]
      #
      # @!attribute [rw] source_snapshot_cluster_identifier
      #   The identifier of the cluster the source snapshot was created from.
      #   This parameter is required if your IAM user has a policy containing
      #   a snapshot resource element that specifies anything other than *
      #   for the cluster name.
      #
      #   Constraints:
      #
      #   * Must be the identifier for a valid cluster.
      #
      #   ^
      #   @return [String]
      #
      # @!attribute [rw] target_snapshot_identifier
      #   The identifier given to the new manual snapshot.
      #
      #   Constraints:
      #
      #   * Cannot be null, empty, or blank.
      #
      #   * Must contain from 1 to 255 alphanumeric characters or hyphens.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique for the AWS account that is making the request.
      #   @return [String]
      class CopyClusterSnapshotMessage < Struct.new(
        :source_snapshot_identifier,
        :source_snapshot_cluster_identifier,
        :target_snapshot_identifier)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot
      #   Describes a snapshot.
      #   @return [Types::Snapshot]
      class CopyClusterSnapshotResult < Struct.new(
        :snapshot)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateClusterMessage
      #   data as a hash:
      #
      #       {
      #         db_name: "String",
      #         cluster_identifier: "String", # required
      #         cluster_type: "String",
      #         node_type: "String", # required
      #         master_username: "String", # required
      #         master_user_password: "String", # required
      #         cluster_security_groups: ["String"],
      #         vpc_security_group_ids: ["String"],
      #         cluster_subnet_group_name: "String",
      #         availability_zone: "String",
      #         preferred_maintenance_window: "String",
      #         cluster_parameter_group_name: "String",
      #         automated_snapshot_retention_period: 1,
      #         port: 1,
      #         cluster_version: "String",
      #         allow_version_upgrade: false,
      #         number_of_nodes: 1,
      #         publicly_accessible: false,
      #         encrypted: false,
      #         hsm_client_certificate_identifier: "String",
      #         hsm_configuration_identifier: "String",
      #         elastic_ip: "String",
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #         kms_key_id: "String",
      #         enhanced_vpc_routing: false,
      #         additional_info: "String",
      #         iam_roles: ["String"],
      #       }
      # @!attribute [rw] db_name
      #   The name of the first database to be created when the cluster is
      #   created.
      #
      #   To create additional databases after the cluster is created, connect
      #   to the cluster with a SQL client and use SQL commands to create a
      #   database. For more information, go to [Create a Database][1] in the
      #   Amazon Redshift Database Developer Guide.
      #
      #   Default: `dev`
      #
      #   Constraints:
      #
      #   * Must contain 1 to 64 alphanumeric characters.
      #
      #   * Must contain only lowercase letters.
      #
      #   * Cannot be a word that is reserved by the service. A list of
      #     reserved words can be found in [Reserved Words][2] in the Amazon
      #     Redshift Database Developer Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/dg/t_creating_database.html
      #   [2]: http://docs.aws.amazon.com/redshift/latest/dg/r_pg_keywords.html
      #   @return [String]
      #
      # @!attribute [rw] cluster_identifier
      #   A unique identifier for the cluster. You use this identifier to
      #   refer to the cluster for any subsequent cluster operations such as
      #   deleting or modifying. The identifier also appears in the Amazon
      #   Redshift console.
      #
      #   Constraints:
      #
      #   * Must contain from 1 to 63 alphanumeric characters or hyphens.
      #
      #   * Alphabetic characters must be lowercase.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique for all clusters within an AWS account.
      #
      #   Example: `myexamplecluster`
      #   @return [String]
      #
      # @!attribute [rw] cluster_type
      #   The type of the cluster. When cluster type is specified as
      #
      #   * `single-node`, the **NumberOfNodes** parameter is not required.
      #
      #   * `multi-node`, the **NumberOfNodes** parameter is required.
      #
      #   Valid Values: `multi-node` \| `single-node`
      #
      #   Default: `multi-node`
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type to be provisioned for the cluster. For information
      #   about node types, go to [ Working with Clusters][1] in the *Amazon
      #   Redshift Cluster Management Guide*.
      #
      #   Valid Values: `ds1.xlarge` \| `ds1.8xlarge` \| `ds2.xlarge` \|
      #   `ds2.8xlarge` \| `dc1.large` \| `dc1.8xlarge`.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#how-many-nodes
      #   @return [String]
      #
      # @!attribute [rw] master_username
      #   The user name associated with the master user account for the
      #   cluster that is being created.
      #
      #   Constraints:
      #
      #   * Must be 1 - 128 alphanumeric characters.
      #
      #   * First character must be a letter.
      #
      #   * Cannot be a reserved word. A list of reserved words can be found
      #     in [Reserved Words][1] in the Amazon Redshift Database Developer
      #     Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/dg/r_pg_keywords.html
      #   @return [String]
      #
      # @!attribute [rw] master_user_password
      #   The password associated with the master user account for the cluster
      #   that is being created.
      #
      #   Constraints:
      #
      #   * Must be between 8 and 64 characters in length.
      #
      #   * Must contain at least one uppercase letter.
      #
      #   * Must contain at least one lowercase letter.
      #
      #   * Must contain one number.
      #
      #   * Can be any printable ASCII character (ASCII code 33 to 126) except
      #     ' (single quote), " (double quote), \\, /, @, or space.
      #   @return [String]
      #
      # @!attribute [rw] cluster_security_groups
      #   A list of security groups to be associated with this cluster.
      #
      #   Default: The default cluster security group for Amazon Redshift.
      #   @return [Array<String>]
      #
      # @!attribute [rw] vpc_security_group_ids
      #   A list of Virtual Private Cloud (VPC) security groups to be
      #   associated with the cluster.
      #
      #   Default: The default VPC security group is associated with the
      #   cluster.
      #   @return [Array<String>]
      #
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of a cluster subnet group to be associated with this
      #   cluster.
      #
      #   If this parameter is not provided the resulting cluster will be
      #   deployed outside virtual private cloud (VPC).
      #   @return [String]
      #
      # @!attribute [rw] availability_zone
      #   The EC2 Availability Zone (AZ) in which you want Amazon Redshift to
      #   provision the cluster. For example, if you have several EC2
      #   instances running in a specific Availability Zone, then you might
      #   want the cluster to be provisioned in the same zone in order to
      #   decrease network latency.
      #
      #   Default: A random, system-chosen Availability Zone in the region
      #   that is specified by the endpoint.
      #
      #   Example: `us-east-1d`
      #
      #   Constraint: The specified Availability Zone must be in the same
      #   region as the current endpoint.
      #   @return [String]
      #
      # @!attribute [rw] preferred_maintenance_window
      #   The weekly time range (in UTC) during which automated cluster
      #   maintenance can occur.
      #
      #   Format: `ddd:hh24:mi-ddd:hh24:mi`
      #
      #   Default: A 30-minute window selected at random from an 8-hour block
      #   of time per region, occurring on a random day of the week. For more
      #   information about the time blocks for each region, see [Maintenance
      #   Windows][1] in Amazon Redshift Cluster Management Guide.
      #
      #   Valid Days: Mon \| Tue \| Wed \| Thu \| Fri \| Sat \| Sun
      #
      #   Constraints: Minimum 30-minute window.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-maintenance-windows
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_group_name
      #   The name of the parameter group to be associated with this cluster.
      #
      #   Default: The default Amazon Redshift cluster parameter group. For
      #   information about the default parameter group, go to [Working with
      #   Amazon Redshift Parameter Groups][1]
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters or hyphens.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html
      #   @return [String]
      #
      # @!attribute [rw] automated_snapshot_retention_period
      #   The number of days that automated snapshots are retained. If the
      #   value is 0, automated snapshots are disabled. Even if automated
      #   snapshots are disabled, you can still create manual snapshots when
      #   you want with CreateClusterSnapshot.
      #
      #   Default: `1`
      #
      #   Constraints: Must be a value from 0 to 35.
      #   @return [Integer]
      #
      # @!attribute [rw] port
      #   The port number on which the cluster accepts incoming connections.
      #
      #   The cluster is accessible only via the JDBC and ODBC connection
      #   strings. Part of the connection string requires the port on which
      #   the cluster will listen for incoming connections.
      #
      #   Default: `5439`
      #
      #   Valid Values: `1150-65535`
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_version
      #   The version of the Amazon Redshift engine software that you want to
      #   deploy on the cluster.
      #
      #   The version selected runs on all the nodes in the cluster.
      #
      #   Constraints: Only version 1.0 is currently available.
      #
      #   Example: `1.0`
      #   @return [String]
      #
      # @!attribute [rw] allow_version_upgrade
      #   If `true`, major version upgrades can be applied during the
      #   maintenance window to the Amazon Redshift engine that is running on
      #   the cluster.
      #
      #   When a new major version of the Amazon Redshift engine is released,
      #   you can request that the service automatically apply upgrades during
      #   the maintenance window to the Amazon Redshift engine that is running
      #   on your cluster.
      #
      #   Default: `true`
      #   @return [Boolean]
      #
      # @!attribute [rw] number_of_nodes
      #   The number of compute nodes in the cluster. This parameter is
      #   required when the **ClusterType** parameter is specified as
      #   `multi-node`.
      #
      #   For information about determining how many nodes you need, go to [
      #   Working with Clusters][1] in the *Amazon Redshift Cluster Management
      #   Guide*.
      #
      #   If you don't specify this parameter, you get a single-node cluster.
      #   When requesting a multi-node cluster, you must specify the number of
      #   nodes that you want in the cluster.
      #
      #   Default: `1`
      #
      #   Constraints: Value must be at least 1 and no more than 100.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#how-many-nodes
      #   @return [Integer]
      #
      # @!attribute [rw] publicly_accessible
      #   If `true`, the cluster can be accessed from a public network.
      #   @return [Boolean]
      #
      # @!attribute [rw] encrypted
      #   If `true`, the data in the cluster is encrypted at rest.
      #
      #   Default: false
      #   @return [Boolean]
      #
      # @!attribute [rw] hsm_client_certificate_identifier
      #   Specifies the name of the HSM client certificate the Amazon Redshift
      #   cluster uses to retrieve the data encryption keys stored in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_configuration_identifier
      #   Specifies the name of the HSM configuration that contains the
      #   information the Amazon Redshift cluster can use to retrieve and
      #   store keys in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] elastic_ip
      #   The Elastic IP (EIP) address for the cluster.
      #
      #   Constraints: The cluster must be provisioned in EC2-VPC and
      #   publicly-accessible through an Internet gateway. For more
      #   information about provisioning clusters in EC2-VPC, go to [Supported
      #   Platforms to Launch Your Cluster][1] in the Amazon Redshift Cluster
      #   Management Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#cluster-platforms
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      #
      # @!attribute [rw] kms_key_id
      #   The AWS Key Management Service (KMS) key ID of the encryption key
      #   that you want to use to encrypt data in the cluster.
      #   @return [String]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      #
      # @!attribute [rw] additional_info
      #   Reserved.
      #   @return [String]
      #
      # @!attribute [rw] iam_roles
      #   A list of AWS Identity and Access Management (IAM) roles that can be
      #   used by the cluster to access other AWS services. You must supply
      #   the IAM roles in their Amazon Resource Name (ARN) format. You can
      #   supply up to 10 IAM roles in a single request.
      #
      #   A cluster can have up to 10 IAM roles associated with it at any
      #   time.
      #   @return [Array<String>]
      class CreateClusterMessage < Struct.new(
        :db_name,
        :cluster_identifier,
        :cluster_type,
        :node_type,
        :master_username,
        :master_user_password,
        :cluster_security_groups,
        :vpc_security_group_ids,
        :cluster_subnet_group_name,
        :availability_zone,
        :preferred_maintenance_window,
        :cluster_parameter_group_name,
        :automated_snapshot_retention_period,
        :port,
        :cluster_version,
        :allow_version_upgrade,
        :number_of_nodes,
        :publicly_accessible,
        :encrypted,
        :hsm_client_certificate_identifier,
        :hsm_configuration_identifier,
        :elastic_ip,
        :tags,
        :kms_key_id,
        :enhanced_vpc_routing,
        :additional_info,
        :iam_roles)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateClusterParameterGroupMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String", # required
      #         parameter_group_family: "String", # required
      #         description: "String", # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of the cluster parameter group.
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters or hyphens
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique withing your AWS account.
      #
      #   <note markdown="1"> This value is stored as a lower-case string.
      #
      #    </note>
      #   @return [String]
      #
      # @!attribute [rw] parameter_group_family
      #   The Amazon Redshift engine version to which the cluster parameter
      #   group applies. The cluster engine version determines the set of
      #   parameters.
      #
      #   To get a list of valid parameter group family names, you can call
      #   DescribeClusterParameterGroups. By default, Amazon Redshift returns
      #   a list of all the parameter groups that are owned by your AWS
      #   account, including the default parameter groups for each Amazon
      #   Redshift engine version. The parameter group family names associated
      #   with the default parameter groups provide you the valid values. For
      #   example, a valid family name is "redshift-1.0".
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A description of the parameter group.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateClusterParameterGroupMessage < Struct.new(
        :parameter_group_name,
        :parameter_group_family,
        :description,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_parameter_group
      #   Describes a parameter group.
      #   @return [Types::ClusterParameterGroup]
      class CreateClusterParameterGroupResult < Struct.new(
        :cluster_parameter_group)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class CreateClusterResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateClusterSecurityGroupMessage
      #   data as a hash:
      #
      #       {
      #         cluster_security_group_name: "String", # required
      #         description: "String", # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] cluster_security_group_name
      #   The name for the security group. Amazon Redshift stores the value as
      #   a lowercase string.
      #
      #   Constraints:
      #
      #   * Must contain no more than 255 alphanumeric characters or hyphens.
      #
      #   * Must not be "Default".
      #
      #   * Must be unique for all security groups that are created by your
      #     AWS account.
      #
      #   Example: `examplesecuritygroup`
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A description for the security group.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateClusterSecurityGroupMessage < Struct.new(
        :cluster_security_group_name,
        :description,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_security_group
      #   Describes a security group.
      #   @return [Types::ClusterSecurityGroup]
      class CreateClusterSecurityGroupResult < Struct.new(
        :cluster_security_group)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateClusterSnapshotMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_identifier: "String", # required
      #         cluster_identifier: "String", # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] snapshot_identifier
      #   A unique identifier for the snapshot that you are requesting. This
      #   identifier must be unique for all snapshots within the AWS account.
      #
      #   Constraints:
      #
      #   * Cannot be null, empty, or blank
      #
      #   * Must contain from 1 to 255 alphanumeric characters or hyphens
      #
      #   * First character must be a letter
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens
      #
      #   Example: `my-snapshot-id`
      #   @return [String]
      #
      # @!attribute [rw] cluster_identifier
      #   The cluster identifier for which you want a snapshot.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateClusterSnapshotMessage < Struct.new(
        :snapshot_identifier,
        :cluster_identifier,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot
      #   Describes a snapshot.
      #   @return [Types::Snapshot]
      class CreateClusterSnapshotResult < Struct.new(
        :snapshot)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateClusterSubnetGroupMessage
      #   data as a hash:
      #
      #       {
      #         cluster_subnet_group_name: "String", # required
      #         description: "String", # required
      #         subnet_ids: ["String"], # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] cluster_subnet_group_name
      #   The name for the subnet group. Amazon Redshift stores the value as a
      #   lowercase string.
      #
      #   Constraints:
      #
      #   * Must contain no more than 255 alphanumeric characters or hyphens.
      #
      #   * Must not be "Default".
      #
      #   * Must be unique for all subnet groups that are created by your AWS
      #     account.
      #
      #   Example: `examplesubnetgroup`
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A description for the subnet group.
      #   @return [String]
      #
      # @!attribute [rw] subnet_ids
      #   An array of VPC subnet IDs. A maximum of 20 subnets can be modified
      #   in a single request.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateClusterSubnetGroupMessage < Struct.new(
        :cluster_subnet_group_name,
        :description,
        :subnet_ids,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_subnet_group
      #   Describes a subnet group.
      #   @return [Types::ClusterSubnetGroup]
      class CreateClusterSubnetGroupResult < Struct.new(
        :cluster_subnet_group)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateEventSubscriptionMessage
      #   data as a hash:
      #
      #       {
      #         subscription_name: "String", # required
      #         sns_topic_arn: "String", # required
      #         source_type: "String",
      #         source_ids: ["String"],
      #         event_categories: ["String"],
      #         severity: "String",
      #         enabled: false,
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] subscription_name
      #   The name of the event subscription to be created.
      #
      #   Constraints:
      #
      #   * Cannot be null, empty, or blank.
      #
      #   * Must contain from 1 to 255 alphanumeric characters or hyphens.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #   @return [String]
      #
      # @!attribute [rw] sns_topic_arn
      #   The Amazon Resource Name (ARN) of the Amazon SNS topic used to
      #   transmit the event notifications. The ARN is created by Amazon SNS
      #   when you create a topic and subscribe to it.
      #   @return [String]
      #
      # @!attribute [rw] source_type
      #   The type of source that will be generating the events. For example,
      #   if you want to be notified of events generated by a cluster, you
      #   would set this parameter to cluster. If this value is not specified,
      #   events are returned for all Amazon Redshift objects in your AWS
      #   account. You must specify a source type in order to specify source
      #   IDs.
      #
      #   Valid values: cluster, cluster-parameter-group,
      #   cluster-security-group, and cluster-snapshot.
      #   @return [String]
      #
      # @!attribute [rw] source_ids
      #   A list of one or more identifiers of Amazon Redshift source objects.
      #   All of the objects must be of the same type as was specified in the
      #   source type parameter. The event subscription will return only
      #   events generated by the specified objects. If not specified, then
      #   events are returned for all objects within the source type
      #   specified.
      #
      #   Example: my-cluster-1, my-cluster-2
      #
      #   Example: my-snapshot-20131010
      #   @return [Array<String>]
      #
      # @!attribute [rw] event_categories
      #   Specifies the Amazon Redshift event categories to be published by
      #   the event notification subscription.
      #
      #   Values: Configuration, Management, Monitoring, Security
      #   @return [Array<String>]
      #
      # @!attribute [rw] severity
      #   Specifies the Amazon Redshift event severity to be published by the
      #   event notification subscription.
      #
      #   Values: ERROR, INFO
      #   @return [String]
      #
      # @!attribute [rw] enabled
      #   A Boolean value; set to `true` to activate the subscription, set to
      #   `false` to create the subscription but not active it.
      #   @return [Boolean]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateEventSubscriptionMessage < Struct.new(
        :subscription_name,
        :sns_topic_arn,
        :source_type,
        :source_ids,
        :event_categories,
        :severity,
        :enabled,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] event_subscription
      #   Describes event subscriptions.
      #   @return [Types::EventSubscription]
      class CreateEventSubscriptionResult < Struct.new(
        :event_subscription)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateHsmClientCertificateMessage
      #   data as a hash:
      #
      #       {
      #         hsm_client_certificate_identifier: "String", # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] hsm_client_certificate_identifier
      #   The identifier to be assigned to the new HSM client certificate that
      #   the cluster will use to connect to the HSM to use the database
      #   encryption keys.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateHsmClientCertificateMessage < Struct.new(
        :hsm_client_certificate_identifier,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] hsm_client_certificate
      #   Returns information about an HSM client certificate. The certificate
      #   is stored in a secure Hardware Storage Module (HSM), and used by the
      #   Amazon Redshift cluster to encrypt data files.
      #   @return [Types::HsmClientCertificate]
      class CreateHsmClientCertificateResult < Struct.new(
        :hsm_client_certificate)
        include Aws::Structure
      end

      # @note When making an API call, pass CreateHsmConfigurationMessage
      #   data as a hash:
      #
      #       {
      #         hsm_configuration_identifier: "String", # required
      #         description: "String", # required
      #         hsm_ip_address: "String", # required
      #         hsm_partition_name: "String", # required
      #         hsm_partition_password: "String", # required
      #         hsm_server_public_certificate: "String", # required
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] hsm_configuration_identifier
      #   The identifier to be assigned to the new Amazon Redshift HSM
      #   configuration.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A text description of the HSM configuration to be created.
      #   @return [String]
      #
      # @!attribute [rw] hsm_ip_address
      #   The IP address that the Amazon Redshift cluster must use to access
      #   the HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_partition_name
      #   The name of the partition in the HSM where the Amazon Redshift
      #   clusters will store their database encryption keys.
      #   @return [String]
      #
      # @!attribute [rw] hsm_partition_password
      #   The password required to access the HSM partition.
      #   @return [String]
      #
      # @!attribute [rw] hsm_server_public_certificate
      #   The HSMs public certificate file. When using Cloud HSM, the file
      #   name is server.pem.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateHsmConfigurationMessage < Struct.new(
        :hsm_configuration_identifier,
        :description,
        :hsm_ip_address,
        :hsm_partition_name,
        :hsm_partition_password,
        :hsm_server_public_certificate,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] hsm_configuration
      #   Returns information about an HSM configuration, which is an object
      #   that describes to Amazon Redshift clusters the information they
      #   require to connect to an HSM where they can store database
      #   encryption keys.
      #   @return [Types::HsmConfiguration]
      class CreateHsmConfigurationResult < Struct.new(
        :hsm_configuration)
        include Aws::Structure
      end

      # The result of the `CreateSnapshotCopyGrant` action.
      # @note When making an API call, pass CreateSnapshotCopyGrantMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_copy_grant_name: "String", # required
      #         kms_key_id: "String",
      #         tags: [
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant. This name must be unique in the
      #   region for the AWS account.
      #
      #   Constraints:
      #
      #   * Must contain from 1 to 63 alphanumeric characters or hyphens.
      #
      #   * Alphabetic characters must be lowercase.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique for all clusters within an AWS account.
      #   @return [String]
      #
      # @!attribute [rw] kms_key_id
      #   The unique identifier of the customer master key (CMK) to which to
      #   grant Amazon Redshift permission. If no key is specified, the
      #   default key is used.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class CreateSnapshotCopyGrantMessage < Struct.new(
        :snapshot_copy_grant_name,
        :kms_key_id,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot_copy_grant
      #   The snapshot copy grant that grants Amazon Redshift permission to
      #   encrypt copied snapshots with the specified customer master key
      #   (CMK) from AWS KMS in the destination region.
      #
      #   For more information about managing snapshot copy grants, go to
      #   [Amazon Redshift Database Encryption][1] in the *Amazon Redshift
      #   Cluster Management Guide*.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-db-encryption.html
      #   @return [Types::SnapshotCopyGrant]
      class CreateSnapshotCopyGrantResult < Struct.new(
        :snapshot_copy_grant)
        include Aws::Structure
      end

      # Contains the output from the `CreateTags` action.
      # @note When making an API call, pass CreateTagsMessage
      #   data as a hash:
      #
      #       {
      #         resource_name: "String", # required
      #         tags: [ # required
      #           {
      #             key: "String",
      #             value: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] resource_name
      #   The Amazon Resource Name (ARN) to which you want to add the tag or
      #   tags. For example,
      #   `arn:aws:redshift:us-east-1:123456789:cluster:t1`.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   One or more name/value pairs to add as tags to the specified
      #   resource. Each tag name is passed in with the parameter `Key` and
      #   the corresponding value is passed in with the parameter `Value`. The
      #   `Key` and `Value` parameters are separated by a comma (,). Separate
      #   multiple tags with a space. For example, `--tags
      #   "Key"="owner","Value"="admin" "Key"="environment","Value"="test"
      #   "Key"="version","Value"="1.0"`.
      #   @return [Array<Types::Tag>]
      class CreateTagsMessage < Struct.new(
        :resource_name,
        :tags)
        include Aws::Structure
      end

      # Describes the default cluster parameters for a parameter group family.
      # @!attribute [rw] parameter_group_family
      #   The name of the cluster parameter group family to which the engine
      #   default parameters apply.
      #   @return [String]
      #
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] parameters
      #   The list of cluster default parameters.
      #   @return [Array<Types::Parameter>]
      class DefaultClusterParameters < Struct.new(
        :parameter_group_family,
        :marker,
        :parameters)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteClusterMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         skip_final_cluster_snapshot: false,
      #         final_cluster_snapshot_identifier: "String",
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster to be deleted.
      #
      #   Constraints:
      #
      #   * Must contain lowercase characters.
      #
      #   * Must contain from 1 to 63 alphanumeric characters or hyphens.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #   @return [String]
      #
      # @!attribute [rw] skip_final_cluster_snapshot
      #   Determines whether a final snapshot of the cluster is created before
      #   Amazon Redshift deletes the cluster. If `true`, a final cluster
      #   snapshot is not created. If `false`, a final cluster snapshot is
      #   created before the cluster is deleted.
      #
      #   <note markdown="1"> The *FinalClusterSnapshotIdentifier* parameter must be specified if
      #   *SkipFinalClusterSnapshot* is `false`.
      #
      #    </note>
      #
      #   Default: `false`
      #   @return [Boolean]
      #
      # @!attribute [rw] final_cluster_snapshot_identifier
      #   The identifier of the final snapshot that is to be created
      #   immediately before deleting the cluster. If this parameter is
      #   provided, *SkipFinalClusterSnapshot* must be `false`.
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #   @return [String]
      class DeleteClusterMessage < Struct.new(
        :cluster_identifier,
        :skip_final_cluster_snapshot,
        :final_cluster_snapshot_identifier)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteClusterParameterGroupMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String", # required
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of the parameter group to be deleted.
      #
      #   Constraints:
      #
      #   * Must be the name of an existing cluster parameter group.
      #
      #   * Cannot delete a default cluster parameter group.
      #   @return [String]
      class DeleteClusterParameterGroupMessage < Struct.new(
        :parameter_group_name)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class DeleteClusterResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteClusterSecurityGroupMessage
      #   data as a hash:
      #
      #       {
      #         cluster_security_group_name: "String", # required
      #       }
      # @!attribute [rw] cluster_security_group_name
      #   The name of the cluster security group to be deleted.
      #   @return [String]
      class DeleteClusterSecurityGroupMessage < Struct.new(
        :cluster_security_group_name)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteClusterSnapshotMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_identifier: "String", # required
      #         snapshot_cluster_identifier: "String",
      #       }
      # @!attribute [rw] snapshot_identifier
      #   The unique identifier of the manual snapshot to be deleted.
      #
      #   Constraints: Must be the name of an existing snapshot that is in the
      #   `available` state.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_cluster_identifier
      #   The unique identifier of the cluster the snapshot was created from.
      #   This parameter is required if your IAM user has a policy containing
      #   a snapshot resource element that specifies anything other than *
      #   for the cluster name.
      #
      #   Constraints: Must be the name of valid cluster.
      #   @return [String]
      class DeleteClusterSnapshotMessage < Struct.new(
        :snapshot_identifier,
        :snapshot_cluster_identifier)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot
      #   Describes a snapshot.
      #   @return [Types::Snapshot]
      class DeleteClusterSnapshotResult < Struct.new(
        :snapshot)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteClusterSubnetGroupMessage
      #   data as a hash:
      #
      #       {
      #         cluster_subnet_group_name: "String", # required
      #       }
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the cluster subnet group name to be deleted.
      #   @return [String]
      class DeleteClusterSubnetGroupMessage < Struct.new(
        :cluster_subnet_group_name)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteEventSubscriptionMessage
      #   data as a hash:
      #
      #       {
      #         subscription_name: "String", # required
      #       }
      # @!attribute [rw] subscription_name
      #   The name of the Amazon Redshift event notification subscription to
      #   be deleted.
      #   @return [String]
      class DeleteEventSubscriptionMessage < Struct.new(
        :subscription_name)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteHsmClientCertificateMessage
      #   data as a hash:
      #
      #       {
      #         hsm_client_certificate_identifier: "String", # required
      #       }
      # @!attribute [rw] hsm_client_certificate_identifier
      #   The identifier of the HSM client certificate to be deleted.
      #   @return [String]
      class DeleteHsmClientCertificateMessage < Struct.new(
        :hsm_client_certificate_identifier)
        include Aws::Structure
      end

      # @note When making an API call, pass DeleteHsmConfigurationMessage
      #   data as a hash:
      #
      #       {
      #         hsm_configuration_identifier: "String", # required
      #       }
      # @!attribute [rw] hsm_configuration_identifier
      #   The identifier of the Amazon Redshift HSM configuration to be
      #   deleted.
      #   @return [String]
      class DeleteHsmConfigurationMessage < Struct.new(
        :hsm_configuration_identifier)
        include Aws::Structure
      end

      # The result of the `DeleteSnapshotCopyGrant` action.
      # @note When making an API call, pass DeleteSnapshotCopyGrantMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_copy_grant_name: "String", # required
      #       }
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant to delete.
      #   @return [String]
      class DeleteSnapshotCopyGrantMessage < Struct.new(
        :snapshot_copy_grant_name)
        include Aws::Structure
      end

      # Contains the output from the `DeleteTags` action.
      # @note When making an API call, pass DeleteTagsMessage
      #   data as a hash:
      #
      #       {
      #         resource_name: "String", # required
      #         tag_keys: ["String"], # required
      #       }
      # @!attribute [rw] resource_name
      #   The Amazon Resource Name (ARN) from which you want to remove the tag
      #   or tags. For example,
      #   `arn:aws:redshift:us-east-1:123456789:cluster:t1`.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   The tag key that you want to delete.
      #   @return [Array<String>]
      class DeleteTagsMessage < Struct.new(
        :resource_name,
        :tag_keys)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterParameterGroupsMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of a specific parameter group for which to return details.
      #   By default, details about all parameter groups and the default
      #   parameter group are returned.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterParameterGroups request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching cluster
      #   parameter groups that are associated with the specified key or keys.
      #   For example, suppose that you have parameter groups that are tagged
      #   with keys called `owner` and `environment`. If you specify both of
      #   these tag keys in the request, Amazon Redshift returns a response
      #   with the parameter groups that have either or both of these tag keys
      #   associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   cluster parameter groups that are associated with the specified tag
      #   value or values. For example, suppose that you have parameter groups
      #   that are tagged with values called `admin` and `test`. If you
      #   specify both of these tag values in the request, Amazon Redshift
      #   returns a response with the parameter groups that have either or
      #   both of these tag values associated with them.
      #   @return [Array<String>]
      class DescribeClusterParameterGroupsMessage < Struct.new(
        :parameter_group_name,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterParametersMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String", # required
      #         source: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of a cluster parameter group for which to return details.
      #   @return [String]
      #
      # @!attribute [rw] source
      #   The parameter types to return. Specify `user` to show parameters
      #   that are different form the default. Similarly, specify
      #   `engine-default` to show parameters that are the same as the default
      #   parameter group.
      #
      #   Default: All parameter types returned.
      #
      #   Valid Values: `user` \| `engine-default`
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterParameters request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeClusterParametersMessage < Struct.new(
        :parameter_group_name,
        :source,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterSecurityGroupsMessage
      #   data as a hash:
      #
      #       {
      #         cluster_security_group_name: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] cluster_security_group_name
      #   The name of a cluster security group for which you are requesting
      #   details. You can specify either the **Marker** parameter or a
      #   **ClusterSecurityGroupName** parameter, but not both.
      #
      #   Example: `securitygroup1`
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterSecurityGroups request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #
      #   Constraints: You can specify either the **ClusterSecurityGroupName**
      #   parameter or the **Marker** parameter, but not both.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching cluster
      #   security groups that are associated with the specified key or keys.
      #   For example, suppose that you have security groups that are tagged
      #   with keys called `owner` and `environment`. If you specify both of
      #   these tag keys in the request, Amazon Redshift returns a response
      #   with the security groups that have either or both of these tag keys
      #   associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   cluster security groups that are associated with the specified tag
      #   value or values. For example, suppose that you have security groups
      #   that are tagged with values called `admin` and `test`. If you
      #   specify both of these tag values in the request, Amazon Redshift
      #   returns a response with the security groups that have either or both
      #   of these tag values associated with them.
      #   @return [Array<String>]
      class DescribeClusterSecurityGroupsMessage < Struct.new(
        :cluster_security_group_name,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterSnapshotsMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String",
      #         snapshot_identifier: "String",
      #         snapshot_type: "String",
      #         start_time: Time.now,
      #         end_time: Time.now,
      #         max_records: 1,
      #         marker: "String",
      #         owner_account: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster for which information about snapshots
      #   is requested.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_identifier
      #   The snapshot identifier of the snapshot about which to return
      #   information.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_type
      #   The type of snapshots for which you are requesting information. By
      #   default, snapshots of all types are returned.
      #
      #   Valid Values: `automated` \| `manual`
      #   @return [String]
      #
      # @!attribute [rw] start_time
      #   A value that requests only snapshots created at or after the
      #   specified time. The time value is specified in ISO 8601 format. For
      #   more information about ISO 8601, go to the [ISO8601 Wikipedia
      #   page.][1]
      #
      #   Example: `2012-07-16T18:00:00Z`
      #
      #
      #
      #   [1]: http://en.wikipedia.org/wiki/ISO_8601
      #   @return [Time]
      #
      # @!attribute [rw] end_time
      #   A time value that requests only snapshots created at or before the
      #   specified time. The time value is specified in ISO 8601 format. For
      #   more information about ISO 8601, go to the [ISO8601 Wikipedia
      #   page.][1]
      #
      #   Example: `2012-07-16T18:00:00Z`
      #
      #
      #
      #   [1]: http://en.wikipedia.org/wiki/ISO_8601
      #   @return [Time]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterSnapshots request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      #
      # @!attribute [rw] owner_account
      #   The AWS customer account used to create or copy the snapshot. Use
      #   this field to filter the results to snapshots owned by a particular
      #   account. To describe snapshots you own, either specify your AWS
      #   customer account, or do not specify the parameter.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching cluster
      #   snapshots that are associated with the specified key or keys. For
      #   example, suppose that you have snapshots that are tagged with keys
      #   called `owner` and `environment`. If you specify both of these tag
      #   keys in the request, Amazon Redshift returns a response with the
      #   snapshots that have either or both of these tag keys associated with
      #   them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   cluster snapshots that are associated with the specified tag value
      #   or values. For example, suppose that you have snapshots that are
      #   tagged with values called `admin` and `test`. If you specify both of
      #   these tag values in the request, Amazon Redshift returns a response
      #   with the snapshots that have either or both of these tag values
      #   associated with them.
      #   @return [Array<String>]
      class DescribeClusterSnapshotsMessage < Struct.new(
        :cluster_identifier,
        :snapshot_identifier,
        :snapshot_type,
        :start_time,
        :end_time,
        :max_records,
        :marker,
        :owner_account,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterSubnetGroupsMessage
      #   data as a hash:
      #
      #       {
      #         cluster_subnet_group_name: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the cluster subnet group for which information is
      #   requested.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterSubnetGroups request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching cluster
      #   subnet groups that are associated with the specified key or keys.
      #   For example, suppose that you have subnet groups that are tagged
      #   with keys called `owner` and `environment`. If you specify both of
      #   these tag keys in the request, Amazon Redshift returns a response
      #   with the subnet groups that have either or both of these tag keys
      #   associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   cluster subnet groups that are associated with the specified tag
      #   value or values. For example, suppose that you have subnet groups
      #   that are tagged with values called `admin` and `test`. If you
      #   specify both of these tag values in the request, Amazon Redshift
      #   returns a response with the subnet groups that have either or both
      #   of these tag values associated with them.
      #   @return [Array<String>]
      class DescribeClusterSubnetGroupsMessage < Struct.new(
        :cluster_subnet_group_name,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClusterVersionsMessage
      #   data as a hash:
      #
      #       {
      #         cluster_version: "String",
      #         cluster_parameter_group_family: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] cluster_version
      #   The specific cluster version to return.
      #
      #   Example: `1.0`
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_group_family
      #   The name of a specific cluster parameter group family to return
      #   details for.
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters
      #
      #   * First character must be a letter
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeClusterVersions request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeClusterVersionsMessage < Struct.new(
        :cluster_version,
        :cluster_parameter_group_family,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeClustersMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of a cluster whose properties you are
      #   requesting. This parameter is case sensitive.
      #
      #   The default is that all clusters defined for an account are
      #   returned.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a DescribeClusters
      #   request exceed the value specified in `MaxRecords`, AWS returns a
      #   value in the `Marker` field of the response. You can retrieve the
      #   next set of response records by providing the returned marker value
      #   in the `Marker` parameter and retrying the request.
      #
      #   Constraints: You can specify either the **ClusterIdentifier**
      #   parameter or the **Marker** parameter, but not both.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching clusters
      #   that are associated with the specified key or keys. For example,
      #   suppose that you have clusters that are tagged with keys called
      #   `owner` and `environment`. If you specify both of these tag keys in
      #   the request, Amazon Redshift returns a response with the clusters
      #   that have either or both of these tag keys associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   clusters that are associated with the specified tag value or values.
      #   For example, suppose that you have clusters that are tagged with
      #   values called `admin` and `test`. If you specify both of these tag
      #   values in the request, Amazon Redshift returns a response with the
      #   clusters that have either or both of these tag values associated
      #   with them.
      #   @return [Array<String>]
      class DescribeClustersMessage < Struct.new(
        :cluster_identifier,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeDefaultClusterParametersMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_family: "String", # required
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] parameter_group_family
      #   The name of the cluster parameter group family.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeDefaultClusterParameters request exceed the value specified
      #   in `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeDefaultClusterParametersMessage < Struct.new(
        :parameter_group_family,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @!attribute [rw] default_cluster_parameters
      #   Describes the default cluster parameters for a parameter group
      #   family.
      #   @return [Types::DefaultClusterParameters]
      class DescribeDefaultClusterParametersResult < Struct.new(
        :default_cluster_parameters)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeEventCategoriesMessage
      #   data as a hash:
      #
      #       {
      #         source_type: "String",
      #       }
      # @!attribute [rw] source_type
      #   The source type, such as cluster or parameter group, to which the
      #   described event categories apply.
      #
      #   Valid values: cluster, cluster-snapshot, cluster-parameter-group,
      #   and cluster-security-group.
      #   @return [String]
      class DescribeEventCategoriesMessage < Struct.new(
        :source_type)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeEventSubscriptionsMessage
      #   data as a hash:
      #
      #       {
      #         subscription_name: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] subscription_name
      #   The name of the Amazon Redshift event notification subscription to
      #   be described.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeEventSubscriptions request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeEventSubscriptionsMessage < Struct.new(
        :subscription_name,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeEventsMessage
      #   data as a hash:
      #
      #       {
      #         source_identifier: "String",
      #         source_type: "cluster", # accepts cluster, cluster-parameter-group, cluster-security-group, cluster-snapshot
      #         start_time: Time.now,
      #         end_time: Time.now,
      #         duration: 1,
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] source_identifier
      #   The identifier of the event source for which events will be
      #   returned. If this parameter is not specified, then all sources are
      #   included in the response.
      #
      #   Constraints:
      #
      #   If *SourceIdentifier* is supplied, *SourceType* must also be
      #   provided.
      #
      #   * Specify a cluster identifier when *SourceType* is `cluster`.
      #
      #   * Specify a cluster security group name when *SourceType* is
      #     `cluster-security-group`.
      #
      #   * Specify a cluster parameter group name when *SourceType* is
      #     `cluster-parameter-group`.
      #
      #   * Specify a cluster snapshot identifier when *SourceType* is
      #     `cluster-snapshot`.
      #   @return [String]
      #
      # @!attribute [rw] source_type
      #   The event source to retrieve events for. If no value is specified,
      #   all events are returned.
      #
      #   Constraints:
      #
      #   If *SourceType* is supplied, *SourceIdentifier* must also be
      #   provided.
      #
      #   * Specify `cluster` when *SourceIdentifier* is a cluster identifier.
      #
      #   * Specify `cluster-security-group` when *SourceIdentifier* is a
      #     cluster security group name.
      #
      #   * Specify `cluster-parameter-group` when *SourceIdentifier* is a
      #     cluster parameter group name.
      #
      #   * Specify `cluster-snapshot` when *SourceIdentifier* is a cluster
      #     snapshot identifier.
      #   @return [String]
      #
      # @!attribute [rw] start_time
      #   The beginning of the time interval to retrieve events for, specified
      #   in ISO 8601 format. For more information about ISO 8601, go to the
      #   [ISO8601 Wikipedia page.][1]
      #
      #   Example: `2009-07-08T18:00Z`
      #
      #
      #
      #   [1]: http://en.wikipedia.org/wiki/ISO_8601
      #   @return [Time]
      #
      # @!attribute [rw] end_time
      #   The end of the time interval for which to retrieve events, specified
      #   in ISO 8601 format. For more information about ISO 8601, go to the
      #   [ISO8601 Wikipedia page.][1]
      #
      #   Example: `2009-07-08T18:00Z`
      #
      #
      #
      #   [1]: http://en.wikipedia.org/wiki/ISO_8601
      #   @return [Time]
      #
      # @!attribute [rw] duration
      #   The number of minutes prior to the time of the request for which to
      #   retrieve events. For example, if the request is sent at 18:00 and
      #   you specify a duration of 60, then only events which have occurred
      #   after 17:00 will be returned.
      #
      #   Default: `60`
      #   @return [Integer]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a DescribeEvents
      #   request exceed the value specified in `MaxRecords`, AWS returns a
      #   value in the `Marker` field of the response. You can retrieve the
      #   next set of response records by providing the returned marker value
      #   in the `Marker` parameter and retrying the request.
      #   @return [String]
      class DescribeEventsMessage < Struct.new(
        :source_identifier,
        :source_type,
        :start_time,
        :end_time,
        :duration,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeHsmClientCertificatesMessage
      #   data as a hash:
      #
      #       {
      #         hsm_client_certificate_identifier: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] hsm_client_certificate_identifier
      #   The identifier of a specific HSM client certificate for which you
      #   want information. If no identifier is specified, information is
      #   returned for all HSM client certificates owned by your AWS customer
      #   account.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeHsmClientCertificates request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching HSM
      #   client certificates that are associated with the specified key or
      #   keys. For example, suppose that you have HSM client certificates
      #   that are tagged with keys called `owner` and `environment`. If you
      #   specify both of these tag keys in the request, Amazon Redshift
      #   returns a response with the HSM client certificates that have either
      #   or both of these tag keys associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching HSM
      #   client certificates that are associated with the specified tag value
      #   or values. For example, suppose that you have HSM client
      #   certificates that are tagged with values called `admin` and `test`.
      #   If you specify both of these tag values in the request, Amazon
      #   Redshift returns a response with the HSM client certificates that
      #   have either or both of these tag values associated with them.
      #   @return [Array<String>]
      class DescribeHsmClientCertificatesMessage < Struct.new(
        :hsm_client_certificate_identifier,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeHsmConfigurationsMessage
      #   data as a hash:
      #
      #       {
      #         hsm_configuration_identifier: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] hsm_configuration_identifier
      #   The identifier of a specific Amazon Redshift HSM configuration to be
      #   described. If no identifier is specified, information is returned
      #   for all HSM configurations owned by your AWS customer account.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeHsmConfigurations request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching HSM
      #   configurations that are associated with the specified key or keys.
      #   For example, suppose that you have HSM configurations that are
      #   tagged with keys called `owner` and `environment`. If you specify
      #   both of these tag keys in the request, Amazon Redshift returns a
      #   response with the HSM configurations that have either or both of
      #   these tag keys associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching HSM
      #   configurations that are associated with the specified tag value or
      #   values. For example, suppose that you have HSM configurations that
      #   are tagged with values called `admin` and `test`. If you specify
      #   both of these tag values in the request, Amazon Redshift returns a
      #   response with the HSM configurations that have either or both of
      #   these tag values associated with them.
      #   @return [Array<String>]
      class DescribeHsmConfigurationsMessage < Struct.new(
        :hsm_configuration_identifier,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeLoggingStatusMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster from which to get the logging status.
      #
      #   Example: `examplecluster`
      #   @return [String]
      class DescribeLoggingStatusMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeOrderableClusterOptionsMessage
      #   data as a hash:
      #
      #       {
      #         cluster_version: "String",
      #         node_type: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] cluster_version
      #   The version filter value. Specify this parameter to show only the
      #   available offerings matching the specified version.
      #
      #   Default: All versions.
      #
      #   Constraints: Must be one of the version returned from
      #   DescribeClusterVersions.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type filter value. Specify this parameter to show only the
      #   available offerings matching the specified node type.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeOrderableClusterOptions request exceed the value specified
      #   in `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeOrderableClusterOptionsMessage < Struct.new(
        :cluster_version,
        :node_type,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeReservedNodeOfferingsMessage
      #   data as a hash:
      #
      #       {
      #         reserved_node_offering_id: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] reserved_node_offering_id
      #   The unique identifier for the offering.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   DescribeReservedNodeOfferings request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #   @return [String]
      class DescribeReservedNodeOfferingsMessage < Struct.new(
        :reserved_node_offering_id,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeReservedNodesMessage
      #   data as a hash:
      #
      #       {
      #         reserved_node_id: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] reserved_node_id
      #   Identifier for the node reservation.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a DescribeReservedNodes
      #   request exceed the value specified in `MaxRecords`, AWS returns a
      #   value in the `Marker` field of the response. You can retrieve the
      #   next set of response records by providing the returned marker value
      #   in the `Marker` parameter and retrying the request.
      #   @return [String]
      class DescribeReservedNodesMessage < Struct.new(
        :reserved_node_id,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeResizeMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of a cluster whose resize progress you are
      #   requesting. This parameter is case-sensitive.
      #
      #   By default, resize operations for all clusters defined for an AWS
      #   account are returned.
      #   @return [String]
      class DescribeResizeMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # The result of the `DescribeSnapshotCopyGrants` action.
      # @note When making an API call, pass DescribeSnapshotCopyGrantsMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_copy_grant_name: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned marker value.
      #
      #   Default: `100`
      #
      #   Constraints: minimum 20, maximum 100.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   `DescribeSnapshotCopyGrant` request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #
      #   Constraints: You can specify either the **SnapshotCopyGrantName**
      #   parameter or the **Marker** parameter, but not both.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching
      #   resources that are associated with the specified key or keys. For
      #   example, suppose that you have resources tagged with keys called
      #   `owner` and `environment`. If you specify both of these tag keys in
      #   the request, Amazon Redshift returns a response with all resources
      #   that have either or both of these tag keys associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   resources that are associated with the specified value or values.
      #   For example, suppose that you have resources tagged with values
      #   called `admin` and `test`. If you specify both of these tag values
      #   in the request, Amazon Redshift returns a response with all
      #   resources that have either or both of these tag values associated
      #   with them.
      #   @return [Array<String>]
      class DescribeSnapshotCopyGrantsMessage < Struct.new(
        :snapshot_copy_grant_name,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeTableRestoreStatusMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String",
      #         table_restore_request_id: "String",
      #         max_records: 1,
      #         marker: "String",
      #       }
      # @!attribute [rw] cluster_identifier
      #   The Amazon Redshift cluster that the table is being restored to.
      #   @return [String]
      #
      # @!attribute [rw] table_restore_request_id
      #   The identifier of the table restore request to return status for. If
      #   you don't specify a `TableRestoreRequestId` value, then
      #   `DescribeTableRestoreStatus` returns the status of all in-progress
      #   table restore requests.
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number of records to include in the response. If more
      #   records exist than the specified `MaxRecords` value, a pagination
      #   token called a marker is included in the response so that the
      #   remaining results can be retrieved.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   An optional pagination token provided by a previous
      #   `DescribeTableRestoreStatus` request. If this parameter is
      #   specified, the response includes only records beyond the marker, up
      #   to the value specified by the `MaxRecords` parameter.
      #   @return [String]
      class DescribeTableRestoreStatusMessage < Struct.new(
        :cluster_identifier,
        :table_restore_request_id,
        :max_records,
        :marker)
        include Aws::Structure
      end

      # @note When making an API call, pass DescribeTagsMessage
      #   data as a hash:
      #
      #       {
      #         resource_name: "String",
      #         resource_type: "String",
      #         max_records: 1,
      #         marker: "String",
      #         tag_keys: ["String"],
      #         tag_values: ["String"],
      #       }
      # @!attribute [rw] resource_name
      #   The Amazon Resource Name (ARN) for which you want to describe the
      #   tag or tags. For example,
      #   `arn:aws:redshift:us-east-1:123456789:cluster:t1`.
      #   @return [String]
      #
      # @!attribute [rw] resource_type
      #   The type of resource with which you want to view tags. Valid
      #   resource types are:
      #
      #   * Cluster
      #
      #   * CIDR/IP
      #
      #   * EC2 security group
      #
      #   * Snapshot
      #
      #   * Cluster security group
      #
      #   * Subnet group
      #
      #   * HSM connection
      #
      #   * HSM certificate
      #
      #   * Parameter group
      #
      #   * Snapshot copy grant
      #
      #   For more information about Amazon Redshift resource types and
      #   constructing ARNs, go to [Constructing an Amazon Redshift Amazon
      #   Resource Name (ARN)][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/constructing-redshift-arn.html
      #   @return [String]
      #
      # @!attribute [rw] max_records
      #   The maximum number or response records to return in each call. If
      #   the number of remaining response records exceeds the specified
      #   `MaxRecords` value, a value is returned in a `marker` field of the
      #   response. You can retrieve the next set of records by retrying the
      #   command with the returned `marker` value.
      #   @return [Integer]
      #
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `marker` parameter and retrying
      #   the command. If the `marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] tag_keys
      #   A tag key or keys for which you want to return all matching
      #   resources that are associated with the specified key or keys. For
      #   example, suppose that you have resources tagged with keys called
      #   `owner` and `environment`. If you specify both of these tag keys in
      #   the request, Amazon Redshift returns a response with all resources
      #   that have either or both of these tag keys associated with them.
      #   @return [Array<String>]
      #
      # @!attribute [rw] tag_values
      #   A tag value or values for which you want to return all matching
      #   resources that are associated with the specified value or values.
      #   For example, suppose that you have resources tagged with values
      #   called `admin` and `test`. If you specify both of these tag values
      #   in the request, Amazon Redshift returns a response with all
      #   resources that have either or both of these tag values associated
      #   with them.
      #   @return [Array<String>]
      class DescribeTagsMessage < Struct.new(
        :resource_name,
        :resource_type,
        :max_records,
        :marker,
        :tag_keys,
        :tag_values)
        include Aws::Structure
      end

      # @note When making an API call, pass DisableLoggingMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster on which logging is to be stopped.
      #
      #   Example: `examplecluster`
      #   @return [String]
      class DisableLoggingMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # @note When making an API call, pass DisableSnapshotCopyMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the source cluster that you want to disable
      #   copying of snapshots to a destination region.
      #
      #   Constraints: Must be the valid name of an existing cluster that has
      #   cross-region snapshot copy enabled.
      #   @return [String]
      class DisableSnapshotCopyMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class DisableSnapshotCopyResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes an Amazon EC2 security group.
      # @!attribute [rw] status
      #   The status of the EC2 security group.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_name
      #   The name of the EC2 Security Group.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_owner_id
      #   The AWS ID of the owner of the EC2 security group specified in the
      #   `EC2SecurityGroupName` field.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the EC2 security group.
      #   @return [Array<Types::Tag>]
      class EC2SecurityGroup < Struct.new(
        :status,
        :ec2_security_group_name,
        :ec2_security_group_owner_id,
        :tags)
        include Aws::Structure
      end

      # Describes the status of the elastic IP (EIP) address.
      # @!attribute [rw] elastic_ip
      #   The elastic IP (EIP) address for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   The status of the elastic IP (EIP) address.
      #   @return [String]
      class ElasticIpStatus < Struct.new(
        :elastic_ip,
        :status)
        include Aws::Structure
      end

      # @note When making an API call, pass EnableLoggingMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         bucket_name: "String", # required
      #         s3_key_prefix: "String",
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster on which logging is to be started.
      #
      #   Example: `examplecluster`
      #   @return [String]
      #
      # @!attribute [rw] bucket_name
      #   The name of an existing S3 bucket where the log files are to be
      #   stored.
      #
      #   Constraints:
      #
      #   * Must be in the same region as the cluster
      #
      #   * The cluster must have read bucket and put object permissions
      #   @return [String]
      #
      # @!attribute [rw] s3_key_prefix
      #   The prefix applied to the log file names.
      #
      #   Constraints:
      #
      #   * Cannot exceed 512 characters
      #
      #   * Cannot contain spaces( ), double quotes ("), single quotes ('),
      #     a backslash (\\), or control characters. The hexadecimal codes for
      #     invalid characters are:
      #
      #     * x00 to x20
      #
      #     * x22
      #
      #     * x27
      #
      #     * x5c
      #
      #     * x7f or larger
      #   @return [String]
      class EnableLoggingMessage < Struct.new(
        :cluster_identifier,
        :bucket_name,
        :s3_key_prefix)
        include Aws::Structure
      end

      # @note When making an API call, pass EnableSnapshotCopyMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         destination_region: "String", # required
      #         retention_period: 1,
      #         snapshot_copy_grant_name: "String",
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the source cluster to copy snapshots from.
      #
      #   Constraints: Must be the valid name of an existing cluster that does
      #   not already have cross-region snapshot copy enabled.
      #   @return [String]
      #
      # @!attribute [rw] destination_region
      #   The destination region that you want to copy snapshots to.
      #
      #   Constraints: Must be the name of a valid region. For more
      #   information, see [Regions and Endpoints][1] in the Amazon Web
      #   Services General Reference.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/general/latest/gr/rande.html#redshift_region
      #   @return [String]
      #
      # @!attribute [rw] retention_period
      #   The number of days to retain automated snapshots in the destination
      #   region after they are copied from the source region.
      #
      #   Default: 7.
      #
      #   Constraints: Must be at least 1 and no more than 35.
      #   @return [Integer]
      #
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant to use when snapshots of an AWS
      #   KMS-encrypted cluster are copied to the destination region.
      #   @return [String]
      class EnableSnapshotCopyMessage < Struct.new(
        :cluster_identifier,
        :destination_region,
        :retention_period,
        :snapshot_copy_grant_name)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class EnableSnapshotCopyResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes a connection endpoint.
      # @!attribute [rw] address
      #   The DNS address of the Cluster.
      #   @return [String]
      #
      # @!attribute [rw] port
      #   The port that the database engine is listening on.
      #   @return [Integer]
      class Endpoint < Struct.new(
        :address,
        :port)
        include Aws::Structure
      end

      # Describes an event.
      # @!attribute [rw] source_identifier
      #   The identifier for the source of the event.
      #   @return [String]
      #
      # @!attribute [rw] source_type
      #   The source type for this event.
      #   @return [String]
      #
      # @!attribute [rw] message
      #   The text of this event.
      #   @return [String]
      #
      # @!attribute [rw] event_categories
      #   A list of the event categories.
      #
      #   Values: Configuration, Management, Monitoring, Security
      #   @return [Array<String>]
      #
      # @!attribute [rw] severity
      #   The severity of the event.
      #
      #   Values: ERROR, INFO
      #   @return [String]
      #
      # @!attribute [rw] date
      #   The date and time of the event.
      #   @return [Time]
      #
      # @!attribute [rw] event_id
      #   The identifier of the event.
      #   @return [String]
      class Event < Struct.new(
        :source_identifier,
        :source_type,
        :message,
        :event_categories,
        :severity,
        :date,
        :event_id)
        include Aws::Structure
      end

      # Describes event categories.
      # @!attribute [rw] source_type
      #   The source type, such as cluster or cluster-snapshot, that the
      #   returned categories belong to.
      #   @return [String]
      #
      # @!attribute [rw] events
      #   The events in the event category.
      #   @return [Array<Types::EventInfoMap>]
      class EventCategoriesMap < Struct.new(
        :source_type,
        :events)
        include Aws::Structure
      end

      # @!attribute [rw] event_categories_map_list
      #   A list of event categories descriptions.
      #   @return [Array<Types::EventCategoriesMap>]
      class EventCategoriesMessage < Struct.new(
        :event_categories_map_list)
        include Aws::Structure
      end

      # Describes event information.
      # @!attribute [rw] event_id
      #   The identifier of an Amazon Redshift event.
      #   @return [String]
      #
      # @!attribute [rw] event_categories
      #   The category of an Amazon Redshift event.
      #   @return [Array<String>]
      #
      # @!attribute [rw] event_description
      #   The description of an Amazon Redshift event.
      #   @return [String]
      #
      # @!attribute [rw] severity
      #   The severity of the event.
      #
      #   Values: ERROR, INFO
      #   @return [String]
      class EventInfoMap < Struct.new(
        :event_id,
        :event_categories,
        :event_description,
        :severity)
        include Aws::Structure
      end

      # Describes event subscriptions.
      # @!attribute [rw] customer_aws_id
      #   The AWS customer account associated with the Amazon Redshift event
      #   notification subscription.
      #   @return [String]
      #
      # @!attribute [rw] cust_subscription_id
      #   The name of the Amazon Redshift event notification subscription.
      #   @return [String]
      #
      # @!attribute [rw] sns_topic_arn
      #   The Amazon Resource Name (ARN) of the Amazon SNS topic used by the
      #   event notification subscription.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   The status of the Amazon Redshift event notification subscription.
      #
      #   Constraints:
      #
      #   * Can be one of the following: active \| no-permission \|
      #     topic-not-exist
      #
      #   * The status "no-permission" indicates that Amazon Redshift no
      #     longer has permission to post to the Amazon SNS topic. The status
      #     "topic-not-exist" indicates that the topic was deleted after the
      #     subscription was created.
      #   @return [String]
      #
      # @!attribute [rw] subscription_creation_time
      #   The date and time the Amazon Redshift event notification
      #   subscription was created.
      #   @return [Time]
      #
      # @!attribute [rw] source_type
      #   The source type of the events returned the Amazon Redshift event
      #   notification, such as cluster, or cluster-snapshot.
      #   @return [String]
      #
      # @!attribute [rw] source_ids_list
      #   A list of the sources that publish events to the Amazon Redshift
      #   event notification subscription.
      #   @return [Array<String>]
      #
      # @!attribute [rw] event_categories_list
      #   The list of Amazon Redshift event categories specified in the event
      #   notification subscription.
      #
      #   Values: Configuration, Management, Monitoring, Security
      #   @return [Array<String>]
      #
      # @!attribute [rw] severity
      #   The event severity specified in the Amazon Redshift event
      #   notification subscription.
      #
      #   Values: ERROR, INFO
      #   @return [String]
      #
      # @!attribute [rw] enabled
      #   A Boolean value indicating whether the subscription is enabled.
      #   `true` indicates the subscription is enabled.
      #   @return [Boolean]
      #
      # @!attribute [rw] tags
      #   The list of tags for the event subscription.
      #   @return [Array<Types::Tag>]
      class EventSubscription < Struct.new(
        :customer_aws_id,
        :cust_subscription_id,
        :sns_topic_arn,
        :status,
        :subscription_creation_time,
        :source_type,
        :source_ids_list,
        :event_categories_list,
        :severity,
        :enabled,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] event_subscriptions_list
      #   A list of event subscriptions.
      #   @return [Array<Types::EventSubscription>]
      class EventSubscriptionsMessage < Struct.new(
        :marker,
        :event_subscriptions_list)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] events
      #   A list of `Event` instances.
      #   @return [Array<Types::Event>]
      class EventsMessage < Struct.new(
        :marker,
        :events)
        include Aws::Structure
      end

      # Returns information about an HSM client certificate. The certificate
      # is stored in a secure Hardware Storage Module (HSM), and used by the
      # Amazon Redshift cluster to encrypt data files.
      # @!attribute [rw] hsm_client_certificate_identifier
      #   The identifier of the HSM client certificate.
      #   @return [String]
      #
      # @!attribute [rw] hsm_client_certificate_public_key
      #   The public key that the Amazon Redshift cluster will use to connect
      #   to the HSM. You must register the public key in the HSM.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the HSM client certificate.
      #   @return [Array<Types::Tag>]
      class HsmClientCertificate < Struct.new(
        :hsm_client_certificate_identifier,
        :hsm_client_certificate_public_key,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] hsm_client_certificates
      #   A list of the identifiers for one or more HSM client certificates
      #   used by Amazon Redshift clusters to store and retrieve database
      #   encryption keys in an HSM.
      #   @return [Array<Types::HsmClientCertificate>]
      class HsmClientCertificateMessage < Struct.new(
        :marker,
        :hsm_client_certificates)
        include Aws::Structure
      end

      # Returns information about an HSM configuration, which is an object
      # that describes to Amazon Redshift clusters the information they
      # require to connect to an HSM where they can store database encryption
      # keys.
      # @!attribute [rw] hsm_configuration_identifier
      #   The name of the Amazon Redshift HSM configuration.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A text description of the HSM configuration.
      #   @return [String]
      #
      # @!attribute [rw] hsm_ip_address
      #   The IP address that the Amazon Redshift cluster must use to access
      #   the HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_partition_name
      #   The name of the partition in the HSM where the Amazon Redshift
      #   clusters will store their database encryption keys.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the HSM configuration.
      #   @return [Array<Types::Tag>]
      class HsmConfiguration < Struct.new(
        :hsm_configuration_identifier,
        :description,
        :hsm_ip_address,
        :hsm_partition_name,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] hsm_configurations
      #   A list of `HsmConfiguration` objects.
      #   @return [Array<Types::HsmConfiguration>]
      class HsmConfigurationMessage < Struct.new(
        :marker,
        :hsm_configurations)
        include Aws::Structure
      end

      # Describes the status of changes to HSM settings.
      # @!attribute [rw] hsm_client_certificate_identifier
      #   Specifies the name of the HSM client certificate the Amazon Redshift
      #   cluster uses to retrieve the data encryption keys stored in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_configuration_identifier
      #   Specifies the name of the HSM configuration that contains the
      #   information the Amazon Redshift cluster can use to retrieve and
      #   store keys in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   Reports whether the Amazon Redshift cluster has finished applying
      #   any HSM settings changes specified in a modify cluster command.
      #
      #   Values: active, applying
      #   @return [String]
      class HsmStatus < Struct.new(
        :hsm_client_certificate_identifier,
        :hsm_configuration_identifier,
        :status)
        include Aws::Structure
      end

      # Describes an IP range used in a security group.
      # @!attribute [rw] status
      #   The status of the IP range, for example, "authorized".
      #   @return [String]
      #
      # @!attribute [rw] cidrip
      #   The IP range in Classless Inter-Domain Routing (CIDR) notation.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the IP range.
      #   @return [Array<Types::Tag>]
      class IPRange < Struct.new(
        :status,
        :cidrip,
        :tags)
        include Aws::Structure
      end

      # Describes the status of logging for a cluster.
      # @!attribute [rw] logging_enabled
      #   `true` if logging is on, `false` if logging is off.
      #   @return [Boolean]
      #
      # @!attribute [rw] bucket_name
      #   The name of the S3 bucket where the log files are stored.
      #   @return [String]
      #
      # @!attribute [rw] s3_key_prefix
      #   The prefix applied to the log file names.
      #   @return [String]
      #
      # @!attribute [rw] last_successful_delivery_time
      #   The last time that logs were delivered.
      #   @return [Time]
      #
      # @!attribute [rw] last_failure_time
      #   The last time when logs failed to be delivered.
      #   @return [Time]
      #
      # @!attribute [rw] last_failure_message
      #   The message indicating that logs failed to be delivered.
      #   @return [String]
      class LoggingStatus < Struct.new(
        :logging_enabled,
        :bucket_name,
        :s3_key_prefix,
        :last_successful_delivery_time,
        :last_failure_time,
        :last_failure_message)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifyClusterIamRolesMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         add_iam_roles: ["String"],
      #         remove_iam_roles: ["String"],
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the cluster for which you want to associate
      #   or disassociate IAM roles.
      #   @return [String]
      #
      # @!attribute [rw] add_iam_roles
      #   Zero or more IAM roles to associate with the cluster. The roles must
      #   be in their Amazon Resource Name (ARN) format. You can associate up
      #   to 10 IAM roles with a single cluster in a single request.
      #   @return [Array<String>]
      #
      # @!attribute [rw] remove_iam_roles
      #   Zero or more IAM roles in ARN format to disassociate from the
      #   cluster. You can disassociate up to 10 IAM roles from a single
      #   cluster in a single request.
      #   @return [Array<String>]
      class ModifyClusterIamRolesMessage < Struct.new(
        :cluster_identifier,
        :add_iam_roles,
        :remove_iam_roles)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class ModifyClusterIamRolesResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifyClusterMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         cluster_type: "String",
      #         node_type: "String",
      #         number_of_nodes: 1,
      #         cluster_security_groups: ["String"],
      #         vpc_security_group_ids: ["String"],
      #         master_user_password: "String",
      #         cluster_parameter_group_name: "String",
      #         automated_snapshot_retention_period: 1,
      #         preferred_maintenance_window: "String",
      #         cluster_version: "String",
      #         allow_version_upgrade: false,
      #         hsm_client_certificate_identifier: "String",
      #         hsm_configuration_identifier: "String",
      #         new_cluster_identifier: "String",
      #         publicly_accessible: false,
      #         elastic_ip: "String",
      #         enhanced_vpc_routing: false,
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the cluster to be modified.
      #
      #   Example: `examplecluster`
      #   @return [String]
      #
      # @!attribute [rw] cluster_type
      #   The new cluster type.
      #
      #   When you submit your cluster resize request, your existing cluster
      #   goes into a read-only mode. After Amazon Redshift provisions a new
      #   cluster based on your resize requirements, there will be outage for
      #   a period while the old cluster is deleted and your connection is
      #   switched to the new cluster. You can use DescribeResize to track the
      #   progress of the resize request.
      #
      #   Valid Values: ` multi-node | single-node `
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The new node type of the cluster. If you specify a new node type,
      #   you must also specify the number of nodes parameter.
      #
      #   When you submit your request to resize a cluster, Amazon Redshift
      #   sets access permissions for the cluster to read-only. After Amazon
      #   Redshift provisions a new cluster according to your resize
      #   requirements, there will be a temporary outage while the old cluster
      #   is deleted and your connection is switched to the new cluster. When
      #   the new connection is complete, the original access permissions for
      #   the cluster are restored. You can use DescribeResize to track the
      #   progress of the resize request.
      #
      #   Valid Values: ` ds1.xlarge` \| `ds1.8xlarge` \| ` ds2.xlarge` \|
      #   `ds2.8xlarge` \| `dc1.large` \| `dc1.8xlarge`.
      #   @return [String]
      #
      # @!attribute [rw] number_of_nodes
      #   The new number of nodes of the cluster. If you specify a new number
      #   of nodes, you must also specify the node type parameter.
      #
      #   When you submit your request to resize a cluster, Amazon Redshift
      #   sets access permissions for the cluster to read-only. After Amazon
      #   Redshift provisions a new cluster according to your resize
      #   requirements, there will be a temporary outage while the old cluster
      #   is deleted and your connection is switched to the new cluster. When
      #   the new connection is complete, the original access permissions for
      #   the cluster are restored. You can use DescribeResize to track the
      #   progress of the resize request.
      #
      #   Valid Values: Integer greater than `0`.
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_security_groups
      #   A list of cluster security groups to be authorized on this cluster.
      #   This change is asynchronously applied as soon as possible.
      #
      #   Security groups currently associated with the cluster, and not in
      #   the list of groups to apply, will be revoked from the cluster.
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters or hyphens
      #
      #   * First character must be a letter
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens
      #   @return [Array<String>]
      #
      # @!attribute [rw] vpc_security_group_ids
      #   A list of virtual private cloud (VPC) security groups to be
      #   associated with the cluster.
      #   @return [Array<String>]
      #
      # @!attribute [rw] master_user_password
      #   The new password for the cluster master user. This change is
      #   asynchronously applied as soon as possible. Between the time of the
      #   request and the completion of the request, the `MasterUserPassword`
      #   element exists in the `PendingModifiedValues` element of the
      #   operation response.
      #
      #   <note markdown="1"> Operations never return the password, so this operation provides a
      #   way to regain access to the master user account for a cluster if the
      #   password is lost.
      #
      #    </note>
      #
      #   Default: Uses existing setting.
      #
      #   Constraints:
      #
      #   * Must be between 8 and 64 characters in length.
      #
      #   * Must contain at least one uppercase letter.
      #
      #   * Must contain at least one lowercase letter.
      #
      #   * Must contain one number.
      #
      #   * Can be any printable ASCII character (ASCII code 33 to 126) except
      #     ' (single quote), " (double quote), \\, /, @, or space.
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_group_name
      #   The name of the cluster parameter group to apply to this cluster.
      #   This change is applied only after the cluster is rebooted. To reboot
      #   a cluster use RebootCluster.
      #
      #   Default: Uses existing setting.
      #
      #   Constraints: The cluster parameter group must be in the same
      #   parameter group family that matches the cluster version.
      #   @return [String]
      #
      # @!attribute [rw] automated_snapshot_retention_period
      #   The number of days that automated snapshots are retained. If the
      #   value is 0, automated snapshots are disabled. Even if automated
      #   snapshots are disabled, you can still create manual snapshots when
      #   you want with CreateClusterSnapshot.
      #
      #   If you decrease the automated snapshot retention period from its
      #   current value, existing automated snapshots that fall outside of the
      #   new retention period will be immediately deleted.
      #
      #   Default: Uses existing setting.
      #
      #   Constraints: Must be a value from 0 to 35.
      #   @return [Integer]
      #
      # @!attribute [rw] preferred_maintenance_window
      #   The weekly time range (in UTC) during which system maintenance can
      #   occur, if necessary. If system maintenance is necessary during the
      #   window, it may result in an outage.
      #
      #   This maintenance window change is made immediately. If the new
      #   maintenance window indicates the current time, there must be at
      #   least 120 minutes between the current time and end of the window in
      #   order to ensure that pending changes are applied.
      #
      #   Default: Uses existing setting.
      #
      #   Format: ddd:hh24:mi-ddd:hh24:mi, for example `wed:07:30-wed:08:00`.
      #
      #   Valid Days: Mon \| Tue \| Wed \| Thu \| Fri \| Sat \| Sun
      #
      #   Constraints: Must be at least 30 minutes.
      #   @return [String]
      #
      # @!attribute [rw] cluster_version
      #   The new version number of the Amazon Redshift engine to upgrade to.
      #
      #   For major version upgrades, if a non-default cluster parameter group
      #   is currently in use, a new cluster parameter group in the cluster
      #   parameter group family for the new version must be specified. The
      #   new cluster parameter group can be the default for that cluster
      #   parameter group family. For more information about parameters and
      #   parameter groups, go to [Amazon Redshift Parameter Groups][1] in the
      #   *Amazon Redshift Cluster Management Guide*.
      #
      #   Example: `1.0`
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html
      #   @return [String]
      #
      # @!attribute [rw] allow_version_upgrade
      #   If `true`, major version upgrades will be applied automatically to
      #   the cluster during the maintenance window.
      #
      #   Default: `false`
      #   @return [Boolean]
      #
      # @!attribute [rw] hsm_client_certificate_identifier
      #   Specifies the name of the HSM client certificate the Amazon Redshift
      #   cluster uses to retrieve the data encryption keys stored in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_configuration_identifier
      #   Specifies the name of the HSM configuration that contains the
      #   information the Amazon Redshift cluster can use to retrieve and
      #   store keys in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] new_cluster_identifier
      #   The new identifier for the cluster.
      #
      #   Constraints:
      #
      #   * Must contain from 1 to 63 alphanumeric characters or hyphens.
      #
      #   * Alphabetic characters must be lowercase.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique for all clusters within an AWS account.
      #
      #   Example: `examplecluster`
      #   @return [String]
      #
      # @!attribute [rw] publicly_accessible
      #   If `true`, the cluster can be accessed from a public network. Only
      #   clusters in VPCs can be set to be publicly available.
      #   @return [Boolean]
      #
      # @!attribute [rw] elastic_ip
      #   The Elastic IP (EIP) address for the cluster.
      #
      #   Constraints: The cluster must be provisioned in EC2-VPC and
      #   publicly-accessible through an Internet gateway. For more
      #   information about provisioning clusters in EC2-VPC, go to [Supported
      #   Platforms to Launch Your Cluster][1] in the Amazon Redshift Cluster
      #   Management Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#cluster-platforms
      #   @return [String]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      class ModifyClusterMessage < Struct.new(
        :cluster_identifier,
        :cluster_type,
        :node_type,
        :number_of_nodes,
        :cluster_security_groups,
        :vpc_security_group_ids,
        :master_user_password,
        :cluster_parameter_group_name,
        :automated_snapshot_retention_period,
        :preferred_maintenance_window,
        :cluster_version,
        :allow_version_upgrade,
        :hsm_client_certificate_identifier,
        :hsm_configuration_identifier,
        :new_cluster_identifier,
        :publicly_accessible,
        :elastic_ip,
        :enhanced_vpc_routing)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifyClusterParameterGroupMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String", # required
      #         parameters: [ # required
      #           {
      #             parameter_name: "String",
      #             parameter_value: "String",
      #             description: "String",
      #             source: "String",
      #             data_type: "String",
      #             allowed_values: "String",
      #             apply_type: "static", # accepts static, dynamic
      #             is_modifiable: false,
      #             minimum_engine_version: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of the parameter group to be modified.
      #   @return [String]
      #
      # @!attribute [rw] parameters
      #   An array of parameters to be modified. A maximum of 20 parameters
      #   can be modified in a single request.
      #
      #   For each parameter to be modified, you must supply at least the
      #   parameter name and parameter value; other name-value pairs of the
      #   parameter are optional.
      #
      #   For the workload management (WLM) configuration, you must supply all
      #   the name-value pairs in the wlm\_json\_configuration parameter.
      #   @return [Array<Types::Parameter>]
      class ModifyClusterParameterGroupMessage < Struct.new(
        :parameter_group_name,
        :parameters)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class ModifyClusterResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifyClusterSubnetGroupMessage
      #   data as a hash:
      #
      #       {
      #         cluster_subnet_group_name: "String", # required
      #         description: "String",
      #         subnet_ids: ["String"], # required
      #       }
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the subnet group to be modified.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A text description of the subnet group to be modified.
      #   @return [String]
      #
      # @!attribute [rw] subnet_ids
      #   An array of VPC subnet IDs. A maximum of 20 subnets can be modified
      #   in a single request.
      #   @return [Array<String>]
      class ModifyClusterSubnetGroupMessage < Struct.new(
        :cluster_subnet_group_name,
        :description,
        :subnet_ids)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_subnet_group
      #   Describes a subnet group.
      #   @return [Types::ClusterSubnetGroup]
      class ModifyClusterSubnetGroupResult < Struct.new(
        :cluster_subnet_group)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifyEventSubscriptionMessage
      #   data as a hash:
      #
      #       {
      #         subscription_name: "String", # required
      #         sns_topic_arn: "String",
      #         source_type: "String",
      #         source_ids: ["String"],
      #         event_categories: ["String"],
      #         severity: "String",
      #         enabled: false,
      #       }
      # @!attribute [rw] subscription_name
      #   The name of the modified Amazon Redshift event notification
      #   subscription.
      #   @return [String]
      #
      # @!attribute [rw] sns_topic_arn
      #   The Amazon Resource Name (ARN) of the SNS topic to be used by the
      #   event notification subscription.
      #   @return [String]
      #
      # @!attribute [rw] source_type
      #   The type of source that will be generating the events. For example,
      #   if you want to be notified of events generated by a cluster, you
      #   would set this parameter to cluster. If this value is not specified,
      #   events are returned for all Amazon Redshift objects in your AWS
      #   account. You must specify a source type in order to specify source
      #   IDs.
      #
      #   Valid values: cluster, cluster-parameter-group,
      #   cluster-security-group, and cluster-snapshot.
      #   @return [String]
      #
      # @!attribute [rw] source_ids
      #   A list of one or more identifiers of Amazon Redshift source objects.
      #   All of the objects must be of the same type as was specified in the
      #   source type parameter. The event subscription will return only
      #   events generated by the specified objects. If not specified, then
      #   events are returned for all objects within the source type
      #   specified.
      #
      #   Example: my-cluster-1, my-cluster-2
      #
      #   Example: my-snapshot-20131010
      #   @return [Array<String>]
      #
      # @!attribute [rw] event_categories
      #   Specifies the Amazon Redshift event categories to be published by
      #   the event notification subscription.
      #
      #   Values: Configuration, Management, Monitoring, Security
      #   @return [Array<String>]
      #
      # @!attribute [rw] severity
      #   Specifies the Amazon Redshift event severity to be published by the
      #   event notification subscription.
      #
      #   Values: ERROR, INFO
      #   @return [String]
      #
      # @!attribute [rw] enabled
      #   A Boolean value indicating if the subscription is enabled. `true`
      #   indicates the subscription is enabled
      #   @return [Boolean]
      class ModifyEventSubscriptionMessage < Struct.new(
        :subscription_name,
        :sns_topic_arn,
        :source_type,
        :source_ids,
        :event_categories,
        :severity,
        :enabled)
        include Aws::Structure
      end

      # @!attribute [rw] event_subscription
      #   Describes event subscriptions.
      #   @return [Types::EventSubscription]
      class ModifyEventSubscriptionResult < Struct.new(
        :event_subscription)
        include Aws::Structure
      end

      # @note When making an API call, pass ModifySnapshotCopyRetentionPeriodMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         retention_period: 1, # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the cluster for which you want to change
      #   the retention period for automated snapshots that are copied to a
      #   destination region.
      #
      #   Constraints: Must be the valid name of an existing cluster that has
      #   cross-region snapshot copy enabled.
      #   @return [String]
      #
      # @!attribute [rw] retention_period
      #   The number of days to retain automated snapshots in the destination
      #   region after they are copied from the source region.
      #
      #   If you decrease the retention period for automated snapshots that
      #   are copied to a destination region, Amazon Redshift will delete any
      #   existing automated snapshots that were copied to the destination
      #   region and that fall outside of the new retention period.
      #
      #   Constraints: Must be at least 1 and no more than 35.
      #   @return [Integer]
      class ModifySnapshotCopyRetentionPeriodMessage < Struct.new(
        :cluster_identifier,
        :retention_period)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class ModifySnapshotCopyRetentionPeriodResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes an orderable cluster option.
      # @!attribute [rw] cluster_version
      #   The version of the orderable cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_type
      #   The cluster type, for example `multi-node`.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type for the orderable cluster.
      #   @return [String]
      #
      # @!attribute [rw] availability_zones
      #   A list of availability zones for the orderable cluster.
      #   @return [Array<Types::AvailabilityZone>]
      class OrderableClusterOption < Struct.new(
        :cluster_version,
        :cluster_type,
        :node_type,
        :availability_zones)
        include Aws::Structure
      end

      # Contains the output from the DescribeOrderableClusterOptions action.
      # @!attribute [rw] orderable_cluster_options
      #   An `OrderableClusterOption` structure containing information about
      #   orderable options for the cluster.
      #   @return [Array<Types::OrderableClusterOption>]
      #
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      class OrderableClusterOptionsMessage < Struct.new(
        :orderable_cluster_options,
        :marker)
        include Aws::Structure
      end

      # Describes a parameter in a cluster parameter group.
      # @note When making an API call, pass Parameter
      #   data as a hash:
      #
      #       {
      #         parameter_name: "String",
      #         parameter_value: "String",
      #         description: "String",
      #         source: "String",
      #         data_type: "String",
      #         allowed_values: "String",
      #         apply_type: "static", # accepts static, dynamic
      #         is_modifiable: false,
      #         minimum_engine_version: "String",
      #       }
      # @!attribute [rw] parameter_name
      #   The name of the parameter.
      #   @return [String]
      #
      # @!attribute [rw] parameter_value
      #   The value of the parameter.
      #   @return [String]
      #
      # @!attribute [rw] description
      #   A description of the parameter.
      #   @return [String]
      #
      # @!attribute [rw] source
      #   The source of the parameter value, such as "engine-default" or
      #   "user".
      #   @return [String]
      #
      # @!attribute [rw] data_type
      #   The data type of the parameter.
      #   @return [String]
      #
      # @!attribute [rw] allowed_values
      #   The valid range of values for the parameter.
      #   @return [String]
      #
      # @!attribute [rw] apply_type
      #   Specifies how to apply the WLM configuration parameter. Some
      #   properties can be applied dynamically, while other properties
      #   require that any associated clusters be rebooted for the
      #   configuration changes to be applied. For more information about
      #   parameters and parameter groups, go to [Amazon Redshift Parameter
      #   Groups][1] in the *Amazon Redshift Cluster Management Guide*.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html
      #   @return [String]
      #
      # @!attribute [rw] is_modifiable
      #   If `true`, the parameter can be modified. Some parameters have
      #   security or operational implications that prevent them from being
      #   changed.
      #   @return [Boolean]
      #
      # @!attribute [rw] minimum_engine_version
      #   The earliest engine version to which the parameter can apply.
      #   @return [String]
      class Parameter < Struct.new(
        :parameter_name,
        :parameter_value,
        :description,
        :source,
        :data_type,
        :allowed_values,
        :apply_type,
        :is_modifiable,
        :minimum_engine_version)
        include Aws::Structure
      end

      # Describes cluster attributes that are in a pending state. A change to
      # one or more the attributes was requested and is in progress or will be
      # applied.
      # @!attribute [rw] master_user_password
      #   The pending or in-progress change of the master user password for
      #   the cluster.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The pending or in-progress change of the cluster's node type.
      #   @return [String]
      #
      # @!attribute [rw] number_of_nodes
      #   The pending or in-progress change of the number of nodes in the
      #   cluster.
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_type
      #   The pending or in-progress change of the cluster type.
      #   @return [String]
      #
      # @!attribute [rw] cluster_version
      #   The pending or in-progress change of the service version.
      #   @return [String]
      #
      # @!attribute [rw] automated_snapshot_retention_period
      #   The pending or in-progress change of the automated snapshot
      #   retention period.
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_identifier
      #   The pending or in-progress change of the new identifier for the
      #   cluster.
      #   @return [String]
      #
      # @!attribute [rw] publicly_accessible
      #   The pending or in-progress change of the ability to connect to the
      #   cluster from the public network.
      #   @return [Boolean]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      class PendingModifiedValues < Struct.new(
        :master_user_password,
        :node_type,
        :number_of_nodes,
        :cluster_type,
        :cluster_version,
        :automated_snapshot_retention_period,
        :cluster_identifier,
        :publicly_accessible,
        :enhanced_vpc_routing)
        include Aws::Structure
      end

      # @note When making an API call, pass PurchaseReservedNodeOfferingMessage
      #   data as a hash:
      #
      #       {
      #         reserved_node_offering_id: "String", # required
      #         node_count: 1,
      #       }
      # @!attribute [rw] reserved_node_offering_id
      #   The unique identifier of the reserved node offering you want to
      #   purchase.
      #   @return [String]
      #
      # @!attribute [rw] node_count
      #   The number of reserved nodes that you want to purchase.
      #
      #   Default: `1`
      #   @return [Integer]
      class PurchaseReservedNodeOfferingMessage < Struct.new(
        :reserved_node_offering_id,
        :node_count)
        include Aws::Structure
      end

      # @!attribute [rw] reserved_node
      #   Describes a reserved node. You can call the
      #   DescribeReservedNodeOfferings API to obtain the available reserved
      #   node offerings.
      #   @return [Types::ReservedNode]
      class PurchaseReservedNodeOfferingResult < Struct.new(
        :reserved_node)
        include Aws::Structure
      end

      # @note When making an API call, pass RebootClusterMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The cluster identifier.
      #   @return [String]
      class RebootClusterMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class RebootClusterResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes a recurring charge.
      # @!attribute [rw] recurring_charge_amount
      #   The amount charged per the period of time specified by the recurring
      #   charge frequency.
      #   @return [Float]
      #
      # @!attribute [rw] recurring_charge_frequency
      #   The frequency at which the recurring charge amount is applied.
      #   @return [String]
      class RecurringCharge < Struct.new(
        :recurring_charge_amount,
        :recurring_charge_frequency)
        include Aws::Structure
      end

      # Describes a reserved node. You can call the
      # DescribeReservedNodeOfferings API to obtain the available reserved
      # node offerings.
      # @!attribute [rw] reserved_node_id
      #   The unique identifier for the reservation.
      #   @return [String]
      #
      # @!attribute [rw] reserved_node_offering_id
      #   The identifier for the reserved node offering.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type of the reserved node.
      #   @return [String]
      #
      # @!attribute [rw] start_time
      #   The time the reservation started. You purchase a reserved node
      #   offering for a duration. This is the start time of that duration.
      #   @return [Time]
      #
      # @!attribute [rw] duration
      #   The duration of the node reservation in seconds.
      #   @return [Integer]
      #
      # @!attribute [rw] fixed_price
      #   The fixed cost Amazon Redshift charges you for this reserved node.
      #   @return [Float]
      #
      # @!attribute [rw] usage_price
      #   The hourly rate Amazon Redshift charges you for this reserved node.
      #   @return [Float]
      #
      # @!attribute [rw] currency_code
      #   The currency code for the reserved cluster.
      #   @return [String]
      #
      # @!attribute [rw] node_count
      #   The number of reserved compute nodes.
      #   @return [Integer]
      #
      # @!attribute [rw] state
      #   The state of the reserved compute node.
      #
      #   Possible Values:
      #
      #   * pending-payment-This reserved node has recently been purchased,
      #     and the sale has been approved, but payment has not yet been
      #     confirmed.
      #
      #   * active-This reserved node is owned by the caller and is available
      #     for use.
      #
      #   * payment-failed-Payment failed for the purchase attempt.
      #   @return [String]
      #
      # @!attribute [rw] offering_type
      #   The anticipated utilization of the reserved node, as defined in the
      #   reserved node offering.
      #   @return [String]
      #
      # @!attribute [rw] recurring_charges
      #   The recurring charges for the reserved node.
      #   @return [Array<Types::RecurringCharge>]
      class ReservedNode < Struct.new(
        :reserved_node_id,
        :reserved_node_offering_id,
        :node_type,
        :start_time,
        :duration,
        :fixed_price,
        :usage_price,
        :currency_code,
        :node_count,
        :state,
        :offering_type,
        :recurring_charges)
        include Aws::Structure
      end

      # Describes a reserved node offering.
      # @!attribute [rw] reserved_node_offering_id
      #   The offering identifier.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type offered by the reserved node offering.
      #   @return [String]
      #
      # @!attribute [rw] duration
      #   The duration, in seconds, for which the offering will reserve the
      #   node.
      #   @return [Integer]
      #
      # @!attribute [rw] fixed_price
      #   The upfront fixed charge you will pay to purchase the specific
      #   reserved node offering.
      #   @return [Float]
      #
      # @!attribute [rw] usage_price
      #   The rate you are charged for each hour the cluster that is using the
      #   offering is running.
      #   @return [Float]
      #
      # @!attribute [rw] currency_code
      #   The currency code for the compute nodes offering.
      #   @return [String]
      #
      # @!attribute [rw] offering_type
      #   The anticipated utilization of the reserved node, as defined in the
      #   reserved node offering.
      #   @return [String]
      #
      # @!attribute [rw] recurring_charges
      #   The charge to your account regardless of whether you are creating
      #   any clusters using the node offering. Recurring charges are only in
      #   effect for heavy-utilization reserved nodes.
      #   @return [Array<Types::RecurringCharge>]
      class ReservedNodeOffering < Struct.new(
        :reserved_node_offering_id,
        :node_type,
        :duration,
        :fixed_price,
        :usage_price,
        :currency_code,
        :offering_type,
        :recurring_charges)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] reserved_node_offerings
      #   A list of `ReservedNodeOffering` objects.
      #   @return [Array<Types::ReservedNodeOffering>]
      class ReservedNodeOfferingsMessage < Struct.new(
        :marker,
        :reserved_node_offerings)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] reserved_nodes
      #   The list of `ReservedNode` objects.
      #   @return [Array<Types::ReservedNode>]
      class ReservedNodesMessage < Struct.new(
        :marker,
        :reserved_nodes)
        include Aws::Structure
      end

      # @note When making an API call, pass ResetClusterParameterGroupMessage
      #   data as a hash:
      #
      #       {
      #         parameter_group_name: "String", # required
      #         reset_all_parameters: false,
      #         parameters: [
      #           {
      #             parameter_name: "String",
      #             parameter_value: "String",
      #             description: "String",
      #             source: "String",
      #             data_type: "String",
      #             allowed_values: "String",
      #             apply_type: "static", # accepts static, dynamic
      #             is_modifiable: false,
      #             minimum_engine_version: "String",
      #           },
      #         ],
      #       }
      # @!attribute [rw] parameter_group_name
      #   The name of the cluster parameter group to be reset.
      #   @return [String]
      #
      # @!attribute [rw] reset_all_parameters
      #   If `true`, all parameters in the specified parameter group will be
      #   reset to their default values.
      #
      #   Default: `true`
      #   @return [Boolean]
      #
      # @!attribute [rw] parameters
      #   An array of names of parameters to be reset. If *ResetAllParameters*
      #   option is not used, then at least one parameter name must be
      #   supplied.
      #
      #   Constraints: A maximum of 20 parameters can be reset in a single
      #   request.
      #   @return [Array<Types::Parameter>]
      class ResetClusterParameterGroupMessage < Struct.new(
        :parameter_group_name,
        :reset_all_parameters,
        :parameters)
        include Aws::Structure
      end

      # Describes the result of a cluster resize operation.
      # @!attribute [rw] target_node_type
      #   The node type that the cluster will have after the resize operation
      #   is complete.
      #   @return [String]
      #
      # @!attribute [rw] target_number_of_nodes
      #   The number of nodes that the cluster will have after the resize
      #   operation is complete.
      #   @return [Integer]
      #
      # @!attribute [rw] target_cluster_type
      #   The cluster type after the resize operation is complete.
      #
      #   Valid Values: `multi-node` \| `single-node`
      #   @return [String]
      #
      # @!attribute [rw] status
      #   The status of the resize operation.
      #
      #   Valid Values: `NONE` \| `IN_PROGRESS` \| `FAILED` \| `SUCCEEDED`
      #   @return [String]
      #
      # @!attribute [rw] import_tables_completed
      #   The names of tables that have been completely imported .
      #
      #   Valid Values: List of table names.
      #   @return [Array<String>]
      #
      # @!attribute [rw] import_tables_in_progress
      #   The names of tables that are being currently imported.
      #
      #   Valid Values: List of table names.
      #   @return [Array<String>]
      #
      # @!attribute [rw] import_tables_not_started
      #   The names of tables that have not been yet imported.
      #
      #   Valid Values: List of table names
      #   @return [Array<String>]
      #
      # @!attribute [rw] avg_resize_rate_in_mega_bytes_per_second
      #   The average rate of the resize operation over the last few minutes,
      #   measured in megabytes per second. After the resize operation
      #   completes, this value shows the average rate of the entire resize
      #   operation.
      #   @return [Float]
      #
      # @!attribute [rw] total_resize_data_in_mega_bytes
      #   The estimated total amount of data, in megabytes, on the cluster
      #   before the resize operation began.
      #   @return [Integer]
      #
      # @!attribute [rw] progress_in_mega_bytes
      #   While the resize operation is in progress, this value shows the
      #   current amount of data, in megabytes, that has been processed so
      #   far. When the resize operation is complete, this value shows the
      #   total amount of data, in megabytes, on the cluster, which may be
      #   more or less than TotalResizeDataInMegaBytes (the estimated total
      #   amount of data before resize).
      #   @return [Integer]
      #
      # @!attribute [rw] elapsed_time_in_seconds
      #   The amount of seconds that have elapsed since the resize operation
      #   began. After the resize operation completes, this value shows the
      #   total actual time, in seconds, for the resize operation.
      #   @return [Integer]
      #
      # @!attribute [rw] estimated_time_to_completion_in_seconds
      #   The estimated time remaining, in seconds, until the resize operation
      #   is complete. This value is calculated based on the average resize
      #   rate and the estimated amount of data remaining to be processed.
      #   Once the resize operation is complete, this value will be 0.
      #   @return [Integer]
      class ResizeProgressMessage < Struct.new(
        :target_node_type,
        :target_number_of_nodes,
        :target_cluster_type,
        :status,
        :import_tables_completed,
        :import_tables_in_progress,
        :import_tables_not_started,
        :avg_resize_rate_in_mega_bytes_per_second,
        :total_resize_data_in_mega_bytes,
        :progress_in_mega_bytes,
        :elapsed_time_in_seconds,
        :estimated_time_to_completion_in_seconds)
        include Aws::Structure
      end

      # @note When making an API call, pass RestoreFromClusterSnapshotMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         snapshot_identifier: "String", # required
      #         snapshot_cluster_identifier: "String",
      #         port: 1,
      #         availability_zone: "String",
      #         allow_version_upgrade: false,
      #         cluster_subnet_group_name: "String",
      #         publicly_accessible: false,
      #         owner_account: "String",
      #         hsm_client_certificate_identifier: "String",
      #         hsm_configuration_identifier: "String",
      #         elastic_ip: "String",
      #         cluster_parameter_group_name: "String",
      #         cluster_security_groups: ["String"],
      #         vpc_security_group_ids: ["String"],
      #         preferred_maintenance_window: "String",
      #         automated_snapshot_retention_period: 1,
      #         kms_key_id: "String",
      #         node_type: "String",
      #         enhanced_vpc_routing: false,
      #         additional_info: "String",
      #         iam_roles: ["String"],
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster that will be created from restoring
      #   the snapshot.
      #
      #   Constraints:
      #
      #   * Must contain from 1 to 63 alphanumeric characters or hyphens.
      #
      #   * Alphabetic characters must be lowercase.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #   * Must be unique for all clusters within an AWS account.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_identifier
      #   The name of the snapshot from which to create the new cluster. This
      #   parameter isn't case sensitive.
      #
      #   Example: `my-snapshot-id`
      #   @return [String]
      #
      # @!attribute [rw] snapshot_cluster_identifier
      #   The name of the cluster the source snapshot was created from. This
      #   parameter is required if your IAM user has a policy containing a
      #   snapshot resource element that specifies anything other than * for
      #   the cluster name.
      #   @return [String]
      #
      # @!attribute [rw] port
      #   The port number on which the cluster accepts connections.
      #
      #   Default: The same port as the original cluster.
      #
      #   Constraints: Must be between `1115` and `65535`.
      #   @return [Integer]
      #
      # @!attribute [rw] availability_zone
      #   The Amazon EC2 Availability Zone in which to restore the cluster.
      #
      #   Default: A random, system-chosen Availability Zone.
      #
      #   Example: `us-east-1a`
      #   @return [String]
      #
      # @!attribute [rw] allow_version_upgrade
      #   If `true`, major version upgrades can be applied during the
      #   maintenance window to the Amazon Redshift engine that is running on
      #   the cluster.
      #
      #   Default: `true`
      #   @return [Boolean]
      #
      # @!attribute [rw] cluster_subnet_group_name
      #   The name of the subnet group where you want to cluster restored.
      #
      #   A snapshot of cluster in VPC can be restored only in VPC. Therefore,
      #   you must provide subnet group name where you want the cluster
      #   restored.
      #   @return [String]
      #
      # @!attribute [rw] publicly_accessible
      #   If `true`, the cluster can be accessed from a public network.
      #   @return [Boolean]
      #
      # @!attribute [rw] owner_account
      #   The AWS customer account used to create or copy the snapshot.
      #   Required if you are restoring a snapshot you do not own, optional if
      #   you own the snapshot.
      #   @return [String]
      #
      # @!attribute [rw] hsm_client_certificate_identifier
      #   Specifies the name of the HSM client certificate the Amazon Redshift
      #   cluster uses to retrieve the data encryption keys stored in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] hsm_configuration_identifier
      #   Specifies the name of the HSM configuration that contains the
      #   information the Amazon Redshift cluster can use to retrieve and
      #   store keys in an HSM.
      #   @return [String]
      #
      # @!attribute [rw] elastic_ip
      #   The elastic IP (EIP) address for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_parameter_group_name
      #   The name of the parameter group to be associated with this cluster.
      #
      #   Default: The default Amazon Redshift cluster parameter group. For
      #   information about the default parameter group, go to [Working with
      #   Amazon Redshift Parameter Groups][1].
      #
      #   Constraints:
      #
      #   * Must be 1 to 255 alphanumeric characters or hyphens.
      #
      #   * First character must be a letter.
      #
      #   * Cannot end with a hyphen or contain two consecutive hyphens.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-parameter-groups.html
      #   @return [String]
      #
      # @!attribute [rw] cluster_security_groups
      #   A list of security groups to be associated with this cluster.
      #
      #   Default: The default cluster security group for Amazon Redshift.
      #
      #   Cluster security groups only apply to clusters outside of VPCs.
      #   @return [Array<String>]
      #
      # @!attribute [rw] vpc_security_group_ids
      #   A list of Virtual Private Cloud (VPC) security groups to be
      #   associated with the cluster.
      #
      #   Default: The default VPC security group is associated with the
      #   cluster.
      #
      #   VPC security groups only apply to clusters in VPCs.
      #   @return [Array<String>]
      #
      # @!attribute [rw] preferred_maintenance_window
      #   The weekly time range (in UTC) during which automated cluster
      #   maintenance can occur.
      #
      #   Format: `ddd:hh24:mi-ddd:hh24:mi`
      #
      #   Default: The value selected for the cluster from which the snapshot
      #   was taken. For more information about the time blocks for each
      #   region, see [Maintenance Windows][1] in Amazon Redshift Cluster
      #   Management Guide.
      #
      #   Valid Days: Mon \| Tue \| Wed \| Thu \| Fri \| Sat \| Sun
      #
      #   Constraints: Minimum 30-minute window.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-maintenance-windows
      #   @return [String]
      #
      # @!attribute [rw] automated_snapshot_retention_period
      #   The number of days that automated snapshots are retained. If the
      #   value is 0, automated snapshots are disabled. Even if automated
      #   snapshots are disabled, you can still create manual snapshots when
      #   you want with CreateClusterSnapshot.
      #
      #   Default: The value selected for the cluster from which the snapshot
      #   was taken.
      #
      #   Constraints: Must be a value from 0 to 35.
      #   @return [Integer]
      #
      # @!attribute [rw] kms_key_id
      #   The AWS Key Management Service (KMS) key ID of the encryption key
      #   that you want to use to encrypt data in the cluster that you restore
      #   from a shared snapshot.
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type that the restored cluster will be provisioned with.
      #
      #   Default: The node type of the cluster from which the snapshot was
      #   taken. You can modify this if you are using any DS node type. In
      #   that case, you can choose to restore into another DS node type of
      #   the same size. For example, you can restore ds1.8xlarge into
      #   ds2.8xlarge, or ds2.xlarge into ds1.xlarge. If you have a DC
      #   instance type, you must restore into that same instance type and
      #   size. In other words, you can only restore a dc1.large instance type
      #   into another dc1.large instance type. For more information about
      #   node types, see [ About Clusters and Nodes][1] in the *Amazon
      #   Redshift Cluster Management Guide*
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-about-clusters-and-nodes
      #   @return [String]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      #
      # @!attribute [rw] additional_info
      #   Reserved.
      #   @return [String]
      #
      # @!attribute [rw] iam_roles
      #   A list of AWS Identity and Access Management (IAM) roles that can be
      #   used by the cluster to access other AWS services. You must supply
      #   the IAM roles in their Amazon Resource Name (ARN) format. You can
      #   supply up to 10 IAM roles in a single request.
      #
      #   A cluster can have up to 10 IAM roles associated at any time.
      #   @return [Array<String>]
      class RestoreFromClusterSnapshotMessage < Struct.new(
        :cluster_identifier,
        :snapshot_identifier,
        :snapshot_cluster_identifier,
        :port,
        :availability_zone,
        :allow_version_upgrade,
        :cluster_subnet_group_name,
        :publicly_accessible,
        :owner_account,
        :hsm_client_certificate_identifier,
        :hsm_configuration_identifier,
        :elastic_ip,
        :cluster_parameter_group_name,
        :cluster_security_groups,
        :vpc_security_group_ids,
        :preferred_maintenance_window,
        :automated_snapshot_retention_period,
        :kms_key_id,
        :node_type,
        :enhanced_vpc_routing,
        :additional_info,
        :iam_roles)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class RestoreFromClusterSnapshotResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes the status of a cluster restore action. Returns null if the
      # cluster was not created by restoring a snapshot.
      # @!attribute [rw] status
      #   The status of the restore action. Returns starting, restoring,
      #   completed, or failed.
      #   @return [String]
      #
      # @!attribute [rw] current_restore_rate_in_mega_bytes_per_second
      #   The number of megabytes per second being transferred from the backup
      #   storage. Returns the average rate for a completed backup.
      #   @return [Float]
      #
      # @!attribute [rw] snapshot_size_in_mega_bytes
      #   The size of the set of snapshot data used to restore the cluster.
      #   @return [Integer]
      #
      # @!attribute [rw] progress_in_mega_bytes
      #   The number of megabytes that have been transferred from snapshot
      #   storage.
      #   @return [Integer]
      #
      # @!attribute [rw] elapsed_time_in_seconds
      #   The amount of time an in-progress restore has been running, or the
      #   amount of time it took a completed restore to finish.
      #   @return [Integer]
      #
      # @!attribute [rw] estimated_time_to_completion_in_seconds
      #   The estimate of the time remaining before the restore will complete.
      #   Returns 0 for a completed restore.
      #   @return [Integer]
      class RestoreStatus < Struct.new(
        :status,
        :current_restore_rate_in_mega_bytes_per_second,
        :snapshot_size_in_mega_bytes,
        :progress_in_mega_bytes,
        :elapsed_time_in_seconds,
        :estimated_time_to_completion_in_seconds)
        include Aws::Structure
      end

      # @note When making an API call, pass RestoreTableFromClusterSnapshotMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #         snapshot_identifier: "String", # required
      #         source_database_name: "String", # required
      #         source_schema_name: "String",
      #         source_table_name: "String", # required
      #         target_database_name: "String",
      #         target_schema_name: "String",
      #         new_table_name: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The identifier of the Amazon Redshift cluster to restore the table
      #   to.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_identifier
      #   The identifier of the snapshot to restore the table from. This
      #   snapshot must have been created from the Amazon Redshift cluster
      #   specified by the `ClusterIdentifier` parameter.
      #   @return [String]
      #
      # @!attribute [rw] source_database_name
      #   The name of the source database that contains the table to restore
      #   from.
      #   @return [String]
      #
      # @!attribute [rw] source_schema_name
      #   The name of the source schema that contains the table to restore
      #   from. If you do not specify a `SourceSchemaName` value, the default
      #   is `public`.
      #   @return [String]
      #
      # @!attribute [rw] source_table_name
      #   The name of the source table to restore from.
      #   @return [String]
      #
      # @!attribute [rw] target_database_name
      #   The name of the database to restore the table to.
      #   @return [String]
      #
      # @!attribute [rw] target_schema_name
      #   The name of the schema to restore the table to.
      #   @return [String]
      #
      # @!attribute [rw] new_table_name
      #   The name of the table to create as a result of the current request.
      #   @return [String]
      class RestoreTableFromClusterSnapshotMessage < Struct.new(
        :cluster_identifier,
        :snapshot_identifier,
        :source_database_name,
        :source_schema_name,
        :source_table_name,
        :target_database_name,
        :target_schema_name,
        :new_table_name)
        include Aws::Structure
      end

      # @!attribute [rw] table_restore_status
      #   Describes the status of a RestoreTableFromClusterSnapshot operation.
      #   @return [Types::TableRestoreStatus]
      class RestoreTableFromClusterSnapshotResult < Struct.new(
        :table_restore_status)
        include Aws::Structure
      end

      # @note When making an API call, pass RevokeClusterSecurityGroupIngressMessage
      #   data as a hash:
      #
      #       {
      #         cluster_security_group_name: "String", # required
      #         cidrip: "String",
      #         ec2_security_group_name: "String",
      #         ec2_security_group_owner_id: "String",
      #       }
      # @!attribute [rw] cluster_security_group_name
      #   The name of the security Group from which to revoke the ingress
      #   rule.
      #   @return [String]
      #
      # @!attribute [rw] cidrip
      #   The IP range for which to revoke access. This range must be a valid
      #   Classless Inter-Domain Routing (CIDR) block of IP addresses. If
      #   `CIDRIP` is specified, `EC2SecurityGroupName` and
      #   `EC2SecurityGroupOwnerId` cannot be provided.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_name
      #   The name of the EC2 Security Group whose access is to be revoked. If
      #   `EC2SecurityGroupName` is specified, `EC2SecurityGroupOwnerId` must
      #   also be provided and `CIDRIP` cannot be provided.
      #   @return [String]
      #
      # @!attribute [rw] ec2_security_group_owner_id
      #   The AWS account number of the owner of the security group specified
      #   in the `EC2SecurityGroupName` parameter. The AWS access key ID is
      #   not an acceptable value. If `EC2SecurityGroupOwnerId` is specified,
      #   `EC2SecurityGroupName` must also be provided. and `CIDRIP` cannot be
      #   provided.
      #
      #   Example: `111122223333`
      #   @return [String]
      class RevokeClusterSecurityGroupIngressMessage < Struct.new(
        :cluster_security_group_name,
        :cidrip,
        :ec2_security_group_name,
        :ec2_security_group_owner_id)
        include Aws::Structure
      end

      # @!attribute [rw] cluster_security_group
      #   Describes a security group.
      #   @return [Types::ClusterSecurityGroup]
      class RevokeClusterSecurityGroupIngressResult < Struct.new(
        :cluster_security_group)
        include Aws::Structure
      end

      # @note When making an API call, pass RevokeSnapshotAccessMessage
      #   data as a hash:
      #
      #       {
      #         snapshot_identifier: "String", # required
      #         snapshot_cluster_identifier: "String",
      #         account_with_restore_access: "String", # required
      #       }
      # @!attribute [rw] snapshot_identifier
      #   The identifier of the snapshot that the account can no longer
      #   access.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_cluster_identifier
      #   The identifier of the cluster the snapshot was created from. This
      #   parameter is required if your IAM user has a policy containing a
      #   snapshot resource element that specifies anything other than * for
      #   the cluster name.
      #   @return [String]
      #
      # @!attribute [rw] account_with_restore_access
      #   The identifier of the AWS customer account that can no longer
      #   restore the specified snapshot.
      #   @return [String]
      class RevokeSnapshotAccessMessage < Struct.new(
        :snapshot_identifier,
        :snapshot_cluster_identifier,
        :account_with_restore_access)
        include Aws::Structure
      end

      # @!attribute [rw] snapshot
      #   Describes a snapshot.
      #   @return [Types::Snapshot]
      class RevokeSnapshotAccessResult < Struct.new(
        :snapshot)
        include Aws::Structure
      end

      # @note When making an API call, pass RotateEncryptionKeyMessage
      #   data as a hash:
      #
      #       {
      #         cluster_identifier: "String", # required
      #       }
      # @!attribute [rw] cluster_identifier
      #   The unique identifier of the cluster that you want to rotate the
      #   encryption keys for.
      #
      #   Constraints: Must be the name of valid cluster that has encryption
      #   enabled.
      #   @return [String]
      class RotateEncryptionKeyMessage < Struct.new(
        :cluster_identifier)
        include Aws::Structure
      end

      # @!attribute [rw] cluster
      #   Describes a cluster.
      #   @return [Types::Cluster]
      class RotateEncryptionKeyResult < Struct.new(
        :cluster)
        include Aws::Structure
      end

      # Describes a snapshot.
      # @!attribute [rw] snapshot_identifier
      #   The snapshot identifier that is provided in the request.
      #   @return [String]
      #
      # @!attribute [rw] cluster_identifier
      #   The identifier of the cluster for which the snapshot was taken.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_create_time
      #   The time (UTC) when Amazon Redshift began the snapshot. A snapshot
      #   contains a copy of the cluster data as of this exact time.
      #   @return [Time]
      #
      # @!attribute [rw] status
      #   The snapshot status. The value of the status depends on the API
      #   operation used.
      #
      #   * CreateClusterSnapshot and CopyClusterSnapshot returns status as
      #     "creating".
      #
      #   * DescribeClusterSnapshots returns status as "creating",
      #     "available", "final snapshot", or "failed".
      #
      #   * DeleteClusterSnapshot returns status as "deleted".
      #   @return [String]
      #
      # @!attribute [rw] port
      #   The port that the cluster is listening on.
      #   @return [Integer]
      #
      # @!attribute [rw] availability_zone
      #   The Availability Zone in which the cluster was created.
      #   @return [String]
      #
      # @!attribute [rw] cluster_create_time
      #   The time (UTC) when the cluster was originally created.
      #   @return [Time]
      #
      # @!attribute [rw] master_username
      #   The master user name for the cluster.
      #   @return [String]
      #
      # @!attribute [rw] cluster_version
      #   The version ID of the Amazon Redshift engine that is running on the
      #   cluster.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_type
      #   The snapshot type. Snapshots created using CreateClusterSnapshot and
      #   CopyClusterSnapshot will be of type "manual".
      #   @return [String]
      #
      # @!attribute [rw] node_type
      #   The node type of the nodes in the cluster.
      #   @return [String]
      #
      # @!attribute [rw] number_of_nodes
      #   The number of nodes in the cluster.
      #   @return [Integer]
      #
      # @!attribute [rw] db_name
      #   The name of the database that was created when the cluster was
      #   created.
      #   @return [String]
      #
      # @!attribute [rw] vpc_id
      #   The VPC identifier of the cluster if the snapshot is from a cluster
      #   in a VPC. Otherwise, this field is not in the output.
      #   @return [String]
      #
      # @!attribute [rw] encrypted
      #   If `true`, the data in the snapshot is encrypted at rest.
      #   @return [Boolean]
      #
      # @!attribute [rw] kms_key_id
      #   The AWS Key Management Service (KMS) key ID of the encryption key
      #   that was used to encrypt data in the cluster from which the snapshot
      #   was taken.
      #   @return [String]
      #
      # @!attribute [rw] encrypted_with_hsm
      #   A boolean that indicates whether the snapshot data is encrypted
      #   using the HSM keys of the source cluster. `true` indicates that the
      #   data is encrypted using HSM keys.
      #   @return [Boolean]
      #
      # @!attribute [rw] accounts_with_restore_access
      #   A list of the AWS customer accounts authorized to restore the
      #   snapshot. Returns `null` if no accounts are authorized. Visible only
      #   to the snapshot owner.
      #   @return [Array<Types::AccountWithRestoreAccess>]
      #
      # @!attribute [rw] owner_account
      #   For manual snapshots, the AWS customer account used to create or
      #   copy the snapshot. For automatic snapshots, the owner of the
      #   cluster. The owner can perform all snapshot actions, such as sharing
      #   a manual snapshot.
      #   @return [String]
      #
      # @!attribute [rw] total_backup_size_in_mega_bytes
      #   The size of the complete set of backup data that would be used to
      #   restore the cluster.
      #   @return [Float]
      #
      # @!attribute [rw] actual_incremental_backup_size_in_mega_bytes
      #   The size of the incremental backup.
      #   @return [Float]
      #
      # @!attribute [rw] backup_progress_in_mega_bytes
      #   The number of megabytes that have been transferred to the snapshot
      #   backup.
      #   @return [Float]
      #
      # @!attribute [rw] current_backup_rate_in_mega_bytes_per_second
      #   The number of megabytes per second being transferred to the snapshot
      #   backup. Returns `0` for a completed backup.
      #   @return [Float]
      #
      # @!attribute [rw] estimated_seconds_to_completion
      #   The estimate of the time remaining before the snapshot backup will
      #   complete. Returns `0` for a completed backup.
      #   @return [Integer]
      #
      # @!attribute [rw] elapsed_time_in_seconds
      #   The amount of time an in-progress snapshot backup has been running,
      #   or the amount of time it took a completed backup to finish.
      #   @return [Integer]
      #
      # @!attribute [rw] source_region
      #   The source region from which the snapshot was copied.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   The list of tags for the cluster snapshot.
      #   @return [Array<Types::Tag>]
      #
      # @!attribute [rw] restorable_node_types
      #   The list of node types that this cluster snapshot is able to restore
      #   into.
      #   @return [Array<String>]
      #
      # @!attribute [rw] enhanced_vpc_routing
      #   An option that specifies whether to create the cluster with enhanced
      #   VPC routing enabled. To create a cluster that uses enhanced VPC
      #   routing, the cluster must be in a VPC. For more information, see
      #   [Enhanced VPC Routing][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #   If this option is `true`, enhanced VPC routing is enabled.
      #
      #   Default: false
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/enhanced-vpc-routing.html
      #   @return [Boolean]
      class Snapshot < Struct.new(
        :snapshot_identifier,
        :cluster_identifier,
        :snapshot_create_time,
        :status,
        :port,
        :availability_zone,
        :cluster_create_time,
        :master_username,
        :cluster_version,
        :snapshot_type,
        :node_type,
        :number_of_nodes,
        :db_name,
        :vpc_id,
        :encrypted,
        :kms_key_id,
        :encrypted_with_hsm,
        :accounts_with_restore_access,
        :owner_account,
        :total_backup_size_in_mega_bytes,
        :actual_incremental_backup_size_in_mega_bytes,
        :backup_progress_in_mega_bytes,
        :current_backup_rate_in_mega_bytes_per_second,
        :estimated_seconds_to_completion,
        :elapsed_time_in_seconds,
        :source_region,
        :tags,
        :restorable_node_types,
        :enhanced_vpc_routing)
        include Aws::Structure
      end

      # The snapshot copy grant that grants Amazon Redshift permission to
      # encrypt copied snapshots with the specified customer master key (CMK)
      # from AWS KMS in the destination region.
      #
      # For more information about managing snapshot copy grants, go to
      # [Amazon Redshift Database Encryption][1] in the *Amazon Redshift
      # Cluster Management Guide*.
      #
      #
      #
      # [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-db-encryption.html
      # @!attribute [rw] snapshot_copy_grant_name
      #   The name of the snapshot copy grant.
      #   @return [String]
      #
      # @!attribute [rw] kms_key_id
      #   The unique identifier of the customer master key (CMK) in AWS KMS to
      #   which Amazon Redshift is granted permission.
      #   @return [String]
      #
      # @!attribute [rw] tags
      #   A list of tag instances.
      #   @return [Array<Types::Tag>]
      class SnapshotCopyGrant < Struct.new(
        :snapshot_copy_grant_name,
        :kms_key_id,
        :tags)
        include Aws::Structure
      end

      # @!attribute [rw] marker
      #   An optional parameter that specifies the starting point to return a
      #   set of response records. When the results of a
      #   `DescribeSnapshotCopyGrant` request exceed the value specified in
      #   `MaxRecords`, AWS returns a value in the `Marker` field of the
      #   response. You can retrieve the next set of response records by
      #   providing the returned marker value in the `Marker` parameter and
      #   retrying the request.
      #
      #   Constraints: You can specify either the **SnapshotCopyGrantName**
      #   parameter or the **Marker** parameter, but not both.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_copy_grants
      #   The list of `SnapshotCopyGrant` objects.
      #   @return [Array<Types::SnapshotCopyGrant>]
      class SnapshotCopyGrantMessage < Struct.new(
        :marker,
        :snapshot_copy_grants)
        include Aws::Structure
      end

      # Contains the output from the DescribeClusterSnapshots action.
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      #
      # @!attribute [rw] snapshots
      #   A list of Snapshot instances.
      #   @return [Array<Types::Snapshot>]
      class SnapshotMessage < Struct.new(
        :marker,
        :snapshots)
        include Aws::Structure
      end

      # Describes a subnet.
      # @!attribute [rw] subnet_identifier
      #   The identifier of the subnet.
      #   @return [String]
      #
      # @!attribute [rw] subnet_availability_zone
      #   Describes an availability zone.
      #   @return [Types::AvailabilityZone]
      #
      # @!attribute [rw] subnet_status
      #   The status of the subnet.
      #   @return [String]
      class Subnet < Struct.new(
        :subnet_identifier,
        :subnet_availability_zone,
        :subnet_status)
        include Aws::Structure
      end

      # Describes the status of a RestoreTableFromClusterSnapshot operation.
      # @!attribute [rw] table_restore_request_id
      #   The unique identifier for the table restore request.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   A value that describes the current state of the table restore
      #   request.
      #
      #   Valid Values: `SUCCEEDED`, `FAILED`, `CANCELED`, `PENDING`,
      #   `IN_PROGRESS`
      #   @return [String]
      #
      # @!attribute [rw] message
      #   A description of the status of the table restore request. Status
      #   values include `SUCCEEDED`, `FAILED`, `CANCELED`, `PENDING`,
      #   `IN_PROGRESS`.
      #   @return [String]
      #
      # @!attribute [rw] request_time
      #   The time that the table restore request was made, in Universal
      #   Coordinated Time (UTC).
      #   @return [Time]
      #
      # @!attribute [rw] progress_in_mega_bytes
      #   The amount of data restored to the new table so far, in megabytes
      #   (MB).
      #   @return [Integer]
      #
      # @!attribute [rw] total_data_in_mega_bytes
      #   The total amount of data to restore to the new table, in megabytes
      #   (MB).
      #   @return [Integer]
      #
      # @!attribute [rw] cluster_identifier
      #   The identifier of the Amazon Redshift cluster that the table is
      #   being restored to.
      #   @return [String]
      #
      # @!attribute [rw] snapshot_identifier
      #   The identifier of the snapshot that the table is being restored
      #   from.
      #   @return [String]
      #
      # @!attribute [rw] source_database_name
      #   The name of the source database that contains the table being
      #   restored.
      #   @return [String]
      #
      # @!attribute [rw] source_schema_name
      #   The name of the source schema that contains the table being
      #   restored.
      #   @return [String]
      #
      # @!attribute [rw] source_table_name
      #   The name of the source table being restored.
      #   @return [String]
      #
      # @!attribute [rw] target_database_name
      #   The name of the database to restore the table to.
      #   @return [String]
      #
      # @!attribute [rw] target_schema_name
      #   The name of the schema to restore the table to.
      #   @return [String]
      #
      # @!attribute [rw] new_table_name
      #   The name of the table to create as a result of the table restore
      #   request.
      #   @return [String]
      class TableRestoreStatus < Struct.new(
        :table_restore_request_id,
        :status,
        :message,
        :request_time,
        :progress_in_mega_bytes,
        :total_data_in_mega_bytes,
        :cluster_identifier,
        :snapshot_identifier,
        :source_database_name,
        :source_schema_name,
        :source_table_name,
        :target_database_name,
        :target_schema_name,
        :new_table_name)
        include Aws::Structure
      end

      # @!attribute [rw] table_restore_status_details
      #   A list of status details for one or more table restore requests.
      #   @return [Array<Types::TableRestoreStatus>]
      #
      # @!attribute [rw] marker
      #   A pagination token that can be used in a subsequent
      #   DescribeTableRestoreStatus request.
      #   @return [String]
      class TableRestoreStatusMessage < Struct.new(
        :table_restore_status_details,
        :marker)
        include Aws::Structure
      end

      # A tag consisting of a name/value pair for a resource.
      # @note When making an API call, pass Tag
      #   data as a hash:
      #
      #       {
      #         key: "String",
      #         value: "String",
      #       }
      # @!attribute [rw] key
      #   The key, or name, for the resource tag.
      #   @return [String]
      #
      # @!attribute [rw] value
      #   The value for the resource tag.
      #   @return [String]
      class Tag < Struct.new(
        :key,
        :value)
        include Aws::Structure
      end

      # A tag and its associated resource.
      # @!attribute [rw] tag
      #   The tag for the resource.
      #   @return [Types::Tag]
      #
      # @!attribute [rw] resource_name
      #   The Amazon Resource Name (ARN) with which the tag is associated. For
      #   example, `arn:aws:redshift:us-east-1:123456789:cluster:t1`.
      #   @return [String]
      #
      # @!attribute [rw] resource_type
      #   The type of resource with which the tag is associated. Valid
      #   resource types are:
      #
      #   * Cluster
      #
      #   * CIDR/IP
      #
      #   * EC2 security group
      #
      #   * Snapshot
      #
      #   * Cluster security group
      #
      #   * Subnet group
      #
      #   * HSM connection
      #
      #   * HSM certificate
      #
      #   * Parameter group
      #
      #   For more information about Amazon Redshift resource types and
      #   constructing ARNs, go to [Constructing an Amazon Redshift Amazon
      #   Resource Name (ARN)][1] in the Amazon Redshift Cluster Management
      #   Guide.
      #
      #
      #
      #   [1]: http://docs.aws.amazon.com/redshift/latest/mgmt/constructing-redshift-arn.html
      #   @return [String]
      class TaggedResource < Struct.new(
        :tag,
        :resource_name,
        :resource_type)
        include Aws::Structure
      end

      # @!attribute [rw] tagged_resources
      #   A list of tags with their associated resources.
      #   @return [Array<Types::TaggedResource>]
      #
      # @!attribute [rw] marker
      #   A value that indicates the starting point for the next set of
      #   response records in a subsequent request. If a value is returned in
      #   a response, you can retrieve the next set of records by providing
      #   this returned marker value in the `Marker` parameter and retrying
      #   the command. If the `Marker` field is empty, all response records
      #   have been retrieved for the request.
      #   @return [String]
      class TaggedResourceListMessage < Struct.new(
        :tagged_resources,
        :marker)
        include Aws::Structure
      end

      # Describes the members of a VPC security group.
      # @!attribute [rw] vpc_security_group_id
      #   The identifier of the VPC security group.
      #   @return [String]
      #
      # @!attribute [rw] status
      #   The status of the VPC security group.
      #   @return [String]
      class VpcSecurityGroupMembership < Struct.new(
        :vpc_security_group_id,
        :status)
        include Aws::Structure
      end

    end
  end
end