definitions:
  schemas:
    NsInstanceUsageSubscriptionRequest:
      description: >-
        This type represents a subscription request related to notifications about NS
        instance usage. It shall comply with the provisions defined in table 8.6.2.2-1.
      type: object
      required:
        - callbackUri
      properties:
        filter:
          description: >-
            Filter settings for this subscription, to define the subset of all notifications
            this subscription relates to. A particular notification is sent to the subscriber
            if the filter matches, or if there is no filter.
          $ref: "#/definitions/schemas/NsInstanceUsageNotificationsFilter"
        callbackUri:
          description: >-
            The URI of the endpoint to send the notification to.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Uri"
        authentication:
          description: >-
            Authentication parameters to configure the use of Authorization when sending
            notifications corresponding to this subscription, as defined in clause 8.3.4
            of ETSI GS NFV-SOL 013.

            This attribute shall only be present if the subscriber requires authorization
            of notifications.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/SubscriptionAuthentication"

    NsInstanceUsageSubscription:
      description: >-
        This type represents a subscription related to notifications about NS instance usage.
        It shall comply with the provisions defined in table 8.6.2.3-1.
      type: object
      required:
        - id
        - callbackUri
        - _links
      properties:
        id:
          description: >-
            Identifier that identifies the subscription.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Identifier"
        filter:
          description: >-
            Filter settings for this subscription, to define the subset of all notifications
            this subscription relates to. A particular notification is sent to the subscriber
            if the filter matches, or if there is no filter.
          $ref: "#/definitions/schemas/NsInstanceUsageNotificationsFilter"
        callbackUri:
          description: >-
            The URI of the endpoint to send the notification to.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Uri"
        _links:
          description: >-
            Links to resources related to this resource.
          type: object
          required:
            - self
          properties:
            self:
              description: >-
                URI of this resource.
              $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Link"

    NsInstanceUsageNotification:
      description: >-
        This type represents an NS instance usage notification, which indicates the start
        or end of usage of an NS instance as a part of a composite NS managed by the NFVO-C.
        It shall comply with the provisions defined in table 8.6.2.4-1.
      type: object
      required:
        - id
        - notificationType
        - subscriptionId
        - timeStamp
        - nsInstanceId
        - status
        - _links
      properties:
        id:
          description: >-
            Identifier of this notification. If a notification is sent multiple times due
            to multiple subscriptions, the "id" attribute of all these notifications shall
            have the same value.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Identifier"
        notificationType:
          description: >-
            Discriminator for the different notification types. Shall be set to
            "NsInstanceUsageNotification" for this notification type.
          type: string
        subscriptionId:
          description: >-
            Identifier of the subscription that this notification relates to.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Identifier"
        timeStamp:
          description: >-
            Date and time of the generation of the notification.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/DateTime"
        nsInstanceId:
          description: >-
            Identifier of the NS instance affected.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Identifier"
        status:
          description: >-
            Indicates whether this notification reports about the start of the usage of
            an NS instance or about the end of the usage of an NS instance.
          $ref: "#/definitions/schemas/NsInstanceUsageStatusType"
        _links:
          description: >-
            Links to resources related to this notification.
          $ref: "../../components/SOL011_schemas.yaml#/components/schemas/NotificationLink"

    NsInstanceUsageNotificationsFilter:
      description: >-
        This type represents a subscription filter related to notifications about NS
        instance usage. It shall comply with the provisions defined in table 8.6.3.1-1.
      type: object
      properties:
        notificationTypes:
          description: >-
            Match particular notification types.

            Permitted values:
            - NsInstanceUsageNotification

            NOTE: The permitted values of the "notificationTypes" attribute are spelled
            exactly as the names of the notification types to facilitate automated code
            generation systems.
          type: array
          items:
            type: string
            enum:
              - NsInstanceUsageNotification
        nsInstanceId:
          description: >-
            If present, match NS instances with an instance identifier listed in this attribute.
          type: array
          items:
            $ref: "../../components/SOL011_schemas.yaml#/components/schemas/Identifier"
        status:
          description: >-
            If present, match a particular status of usage of an NS instance.
          $ref: "#/definitions/schemas/NsInstanceUsageStatusType"

    NsInstanceUsageStatusType:
      description: >-
        The enumeration NsInstanceUsageStatusType shall comply with the provisions defined
        in table 8.6.4.3-1.
      type: string
      enum:
        - START
        - END