openapi: 3.0.3
info:
  title: QoD for enhanced communication
  description: Service Enabling Network Function API for QoS control
  termsOfService: http://swagger.io/terms/
  contact:
    email: project-email@sample.com
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
  version: 0.8.1
externalDocs:
  description: Product documentation at Camara
  url: https://github.com/camaraproject/
security:
  - oAuth2ClientCredentials: []
servers:
  - url: "{apiRoot}/{basePath}"
    variables:
      apiRoot:
        default: http://localhost:9091
        description: API root
      basePath:
        default: qod/v0
        description: Base path for the QoD API
paths:
  /sessions:
    post:
      tags:
        - QoS sessions
      summary: Creates a new session
      description: Creates a new QoS session on demand
      operationId: createSession
      requestBody:
        description: Creates a new session
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/CreateSession"
        required: true
      callbacks:
        notifications:
          "{$request.body#/notificationUrl}/notifications":
            $ref: "#/paths/~1notifications"
      responses:
        "201":
          description: Session created
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/SessionInfo"
        "400":
          description: Invalid input
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              examples:
                Generic400:
                  summary: Schema validation failed
                  value: 
                    code: INVALID_INPUT
                    message: "Schema validation failed at  ..."
                MsisdnRequired:
                  summary: msisdn is required as part of ueId
                  value: 
                    code: INVALID_INPUT
                    message: "Expected property is missing: ueId.msisdn"
                IPv4Required:
                  summary: ipv4addr is required as part of ueId
                  value: 
                    code: INVALID_INPUT
                    message: "Expected property is missing: ueId.ipv4addr"
                IPRequired:
                  summary: Some IP address is required as part of ueId
                  value: 
                    code: INVALID_INPUT
                    message: "Expected property is missing: ueId.ipv4addr or ueId.ipv6addr"
                UePortsRequired:
                  summary: uePorts is required
                  value: 
                    code: INVALID_INPUT
                    message: "Expected property is missing: uePorts"
                QoSRequired:
                  summary: qos is required
                  value: 
                    code: INVALID_INPUT
                    message: "Expected property is missing: qos"
                UePortsRangesNotAllowed:
                  summary: Ranges at uePorts are not allowed
                  value: 
                    code: INVALID_INPUT
                    message: "Ranges not allowed: uePorts"
        "401":
          $ref: "#/components/responses/Generic401"
        "403":
          $ref: "#/components/responses/Generic403"
        "409":
          description: Conflict
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              example:
                code: CONFLICT
                message: "Another session is created for the same UE"
        "500":
          description: Server error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              example:
                code: INTERNAL
                message: "Session could not be created"
        "503":
          $ref: "#/components/responses/Generic503"
  /sessions/{sessionId}:
    get:
      tags:
        - QoS sessions
      summary: "Get session information"
      operationId: getSession
      parameters:
        - name: sessionId
          in: path
          description: Session ID that was obtained from the createSession operation
          required: true
          schema:
            $ref: "#/components/schemas/SessionId"
      responses:
        "200":
          description: Contains information about active session
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/SessionInfo"
        "401":
          $ref: "#/components/responses/Generic401"
        "403":
          $ref: "#/components/responses/Generic403"
        "404":
          $ref: "#/components/responses/SessionNotFound404"
        "500":
          description: Server error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              example:
                code: INTERNAL
                message: "Could not get session information"
        "503":
          $ref: "#/components/responses/Generic503"
    delete:
      tags:
        - QoS sessions
      summary: "Free resources related to QoS session"
      operationId: deleteSession
      parameters:
        - name: sessionId
          in: path
          description: Session ID that was obtained from the createSession operation
          required: true
          schema:
            $ref: "#/components/schemas/SessionId"
      responses:
        "204":
          description: Session deleted
        "401":
          $ref: "#/components/responses/Generic401"
        "403":
          $ref: "#/components/responses/Generic403"
        "404":
          $ref: "#/components/responses/SessionNotFound404"
        "500":
          description: Server error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              example:
                code: INTERNAL
                message: "Session could not be deleted"
        "503":
          $ref: "#/components/responses/Generic503"
  /notifications:
    post:
      tags:
        - Session notifications callback
      summary: "Session notifications callback"
      description: |
        Important: this endpoint is to be implemented by the API consumer.
        The QoD server will call this endpoint whenever any network related event occurs.
        Currently only SESSION_TERMINATED event is implemented. Any other network events are ignored.
      operationId: postNotification
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: "#/components/schemas/Notification"
      responses:
        "204":
          description: Successful notification
        "400":
          $ref: "#/components/responses/Generic400"
        "401":
          $ref: "#/components/responses/Generic401"
        "403":
          $ref: "#/components/responses/Generic403"
        "500":
          description: Server error
          content:
            application/json:
              schema:
                $ref: "#/components/schemas/ErrorInfo"
              example:
                code: INTERNAL
                message: "Failed to handle notification"
        "503":
          $ref: "#/components/responses/Generic503"
      security:
        - apiKey: []
components:
  securitySchemes:
    oAuth2ClientCredentials:
      type: oauth2
      description: This API uses OAuth 2 with the client credentials grant flow.
      flows:
        clientCredentials:
          tokenUrl: "{tokenUrl}"
          scopes: {}
    apiKey:
      type: apiKey
      description: API key to authorize requests
      name: apikey
      in: query
  schemas:
    SessionId:
      type: string
      format: uuid
      description: Session ID in UUID format
    SessionInfo:
      description: Session related information.
      allOf:
        - $ref: "#/components/schemas/CreateSession"
        - type: object
          required:
            - id
            - duration
            - startedAt
            - expiresAt
          properties:
            id:
              $ref: "#/components/schemas/SessionId"
            startedAt:
              type: integer
              example: 1639479600
              description: Timestamp of session start in seconds since unix epoch
              format: int64
            expiresAt:
              type: integer
              example: 1639566000
              description: Timestamp of session expiration if the session was not deleted, in seconds since unix epoch
              format: int64
            messages:
              type: array
              items:
                $ref: "#/components/schemas/Message"
    CreateSession:
      description: Data type with attributes required for creating a session
      type: object
      properties:
        duration:
          type: integer
          example: 86400
          description: |
            Session duration in seconds. Maximal value of 24 hours is used if not set.
            After session has expired the client will receive SESSION_TERMINATED event. See notification callback.
          format: int32
          minimum: 1
          maximum: 86400
          default: 86400
        ueId:
          $ref: "#/components/schemas/UeId"
        asId:
          $ref: "#/components/schemas/AsId"
        uePorts:
          $ref: "#/components/schemas/PortsSpec"
        asPorts:
          $ref: "#/components/schemas/PortsSpec"
        qos:
          $ref: "#/components/schemas/QosProfile"
        notificationUrl:
          type: string
          format: uri
          example: "https://application-server.com"
          description: Allows asynchronous delivery of session related events
        notificationAuthToken:
          type: string
          example: "c8974e592c2fa383d4a3960714"
          description: Authentication token for callback API
      required:
        - ueId
        - asId
        - qos
    Port:
      type: integer
      minimum: 0
      maximum: 65535
    PortsSpec:
      type: object
      minProperties: 1
      properties:
        ranges:
          type: array
          minItems: 1
          items:
            type: object
            required:
              - from
              - to
            properties:
              from:
                $ref: "#/components/schemas/Port"
              to:
                $ref: "#/components/schemas/Port"
        ports:
          type: array
          minItems: 1
          items:
            $ref: "#/components/schemas/Port"
      example:
        ranges:
          - from: 5010
            to: 5020
        ports:
          - 5060
          - 5070
      description: |
        Ports may be specified as a list of ranges or single ports.
    QosProfile:
      type: string
      enum:
        - QOS_E
        - QOS_S
        - QOS_M
        - QOS_L
      description: |
        * `QOS_E` - Qualifier for enhanced communication profile
        * `QOS_S` - Qualifier for the requested QoS profile _S_
        * `QOS_M` - Qualifier for the requested QoS profile _M_
        * `QOS_L` - Qualifier for the requested QoS profile _L_
    Notification:
      type: object
      required:
        - sessionId
        - event
      properties:
        sessionId:
          $ref: "#/components/schemas/SessionId"
        event:
          $ref: "#/components/schemas/SessionEvent"
    SessionEvent:
      type: string
      enum:
        - SESSION_TERMINATED
    ErrorInfo:
      type: object
      required:
        - code
        - message
      properties:
        code:
          type: string
          description: Code given to this error
        message:
          type: string
          description: Detailed error description
    UeId:
      type: object
      minProperties: 1
      properties:
        externalId:
          $ref: "#/components/schemas/ExternalId"
        msisdn:
          $ref: "#/components/schemas/MSISDN"
        ipv4addr:
          $ref: "#/components/schemas/Ipv4Addr"
        ipv6addr:
          $ref: "#/components/schemas/Ipv6Addr"
      description: User equipment identifier
    AsId:
      type: object
      minProperties: 1
      properties:
        ipv4addr:
          $ref: "#/components/schemas/Ipv4Addr"
        ipv6addr:
          $ref: "#/components/schemas/Ipv6Addr"
      description: Application server identifier
    ExternalId:
      type: string
      example: "123456789@domain.com"
    MSISDN:
      type: string
      pattern: '^\+?[0-9]{5,15}$'
      example: "123456789"
      description: Subscriber number in E.164 format (starting with country code). Optionally prefixed with '+'.
    Ipv4Addr:
      type: string
      format: ipv4
      pattern: '^([01]?\d\d?|2[0-4]\d|25[0-5])(?:\.(?:[01]?\d\d?|2[0-4]\d|25[0-5])){3}(\/([0-9]|[1-2][0-9]|3[0-2]))?$'
      example: "192.168.0.1/24"
      description: |
        IPv4 address may be specified in form <address/mask> as:
          - address - an IPv4 number in dotted-quad form 1.2.3.4. Only this exact IP number will match the flow control rule.
          - address/mask - an IP number as above with a mask width of the form 1.2.3.4/24.
            In this case, all IP numbers from 1.2.3.0 to 1.2.3.255 will match. The bit width MUST be valid for the IP version.
    Ipv6Addr:
      type: string
      format: ipv6
      allOf:
        - pattern: '^((:|(0?|([1-9a-f][0-9a-f]{0,3}))):)((0?|([1-9a-f][0-9a-f]{0,3})):){0,6}(:|(0?|([1-9a-f][0-9a-f]{0,3})))(\/(([0-9])|([0-9]{2})|(1[0-1][0-9])|(12[0-8])))?$'
        - pattern: '^((([^:]+:){7}([^:]+))|((([^:]+:)*[^:]+)?::(([^:]+:)*[^:]+)?))(\/.+)?$'
      example: "2001:db8:85a3:8d3:1319:8a2e:370:7344"
      description: |
        IPv6 address, following IETF 5952 format, may be specified in form <address/mask> as:
          - address - The /128 subnet is optional for single addresses:
            - 2001:db8:85a3:8d3:1319:8a2e:370:7344
            - 2001:db8:85a3:8d3:1319:8a2e:370:7344/128
          - address/mask - an IP v6 number with a mask:
            - 2001:db8:85a3:8d3::0/64
            - 2001:db8:85a3:8d3::/64
    Message:
      type: object
      properties:
        severity:
          type: string
          enum: ["INFO", "WARNING"]
          description: Message severity
        description:
          type: string
          description: Detailed message text
      required:
        - severity
        - description
  responses:
    Generic400:
      description: Invalid input
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/ErrorInfo"
          example:
            code: INVALID_INPUT
            message: "Schema validation failed at  ..."
    Generic401:
      description: Unauthorized
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/ErrorInfo"
          example:
            code: UNAUTHORIZED
            message: "Authorization failed: ..."
    Generic403:
      description: Forbidden
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/ErrorInfo"
          example:
            code: FORBIDDEN
            message: "Operation not allowed: ..."
    SessionNotFound404:
      description: Session not found
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/ErrorInfo"
          example:
            code: NOT_FOUND
            message: "Session Id does not exist"
    Generic503:
      description: Service unavailable
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/ErrorInfo"
          example:
            code: SERVICE_UNAVAILABLE
            message: "Service unavailable"