Global System for Mobile Communications Location Retrieval API

openapi: 3.0.3
info:
  title: Global System for Mobile Communications GSMA Camara Project Endpoint Discovery Application Location Retrieval API
  version: 0.1.0-wip
  description: The Application Discovery API extends beyond the capabilities of the Simple Edge Discovery API by not only locating the nearest Edge Cloud Zone but also directly linking to the application endpoints within those Edge Cloud Zones.
  contact:
    email: sp-edc@lists.camaraproject.org
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0.html
servers:
- url: '{apiRoot}/{basePath}'
  variables:
    apiRoot:
      default: https://localhost:443
      description: API root.
    basePath:
      default: application-endpoint-discovery/vwip
      description: Base path for the Application Endpoint Discovery.
tags:
- name: Location Retrieval
  description: Retrieve the location of a device
paths:
  /retrieve:
    post:
      tags:
      - Location Retrieval
      summary: Global System for Mobile Communications Execute location retrieval for a user equipment
      description: Retrieve the area where a certain user device is localized.
      operationId: retrieveLocation
      parameters:
      - $ref: '#/components/parameters/x-correlator'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RetrievalLocationRequest'
            examples:
              INPUT_PHONE_NUMBER_MAX_AGE:
                summary: Phone number and maxAge
                description: Retrieve location for a device identified by a phone number, providing a maxAge
                value:
                  device:
                    phoneNumber: '+123456789'
                  maxAge: 120
              INPUT_IP_ADDRESS_V4:
                summary: IPv4 address without maxAge
                description: Retrieve location for a device identified by an IPv4 address, without an indication for maxAge
                value:
                  device:
                    ipv4Address:
                      publicAddress: 123.234.1.2
                      publicPort: 1234
              INPUT_NO_DEVICE_AND_MAX_AGE:
                summary: Device not provided, only maxAge
                description: The device has to be deducted from token
                value:
                  maxAge: 120
      responses:
        '200':
          description: Location retrieval result
          headers:
            x-correlator:
              $ref: '#/components/headers/x-correlator'
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Location'
              examples:
                LOCATION_CIRCLE:
                  $ref: '#/components/examples/RETRIEVAL_CIRCLE'
                LOCATION_POLYGON:
                  $ref: '#/components/examples/RETRIEVAL_POLYGON'
        '400':
          $ref: '#/components/responses/Generic400'
        '401':
          $ref: '#/components/responses/Generic401'
        '403':
          $ref: '#/components/responses/Generic403'
        '404':
          $ref: '#/components/responses/RetrieveLocationNotFound404'
        '422':
          $ref: '#/components/responses/RetrieveLocationUnprocessableEntity422'
        '500':
          $ref: '#/components/responses/Generic500'
        '503':
          $ref: '#/components/responses/Generic503'
      security:
      - openId:
        - location-retrieval:read
components:
  responses:
    Generic503:
      description: Service Unavailable
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            GENERIC_503_UNAVAILABLE:
              summary: Generic Unavailable
              description: Service is not available. Temporary situation usually related to maintenance process in the server side
              value:
                status: 503
                code: UNAVAILABLE
                message: Service Unavailable.
    Generic500:
      description: Internal server error
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            GENERIC_500_INTERNAL:
              summary: Generic Internal
              description: Problem in Server side. Regular Server Exception
              value:
                status: 500
                code: INTERNAL
                message: Internal server error
    Generic400:
      description: Bad Request
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            GENERIC_400_INVALID_ARGUMENT:
              summary: Generic Invalid Argument
              description: Invalid Argument. Generic Syntax Exception
              value:
                status: 400
                code: INVALID_ARGUMENT
                message: Client specified an invalid argument, request body or query param.
            GENERIC_400_OUT_OF_RANGE:
              summary: Generic Out of Range
              description: Out of Range. Specific Syntax Exception used when a given field has a pre-defined range or a invalid filter criteria combination is requested
              value:
                status: 400
                code: OUT_OF_RANGE
                message: Client specified an invalid range.
            GENERIC_400_MAX_AGE_NOT_SATISFIABLE:
              value:
                status: 400
                code: LOCATION_RETRIEVAL.MAXAGE_INVALID_ARGUMENT
                message: maxAge threshold cannot be satisfied
    Generic401:
      description: Unauthorized
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            GENERIC_401_UNAUTHENTICATED:
              summary: Generic Unauthenticated
              description: Request cannot be authenticated
              value:
                status: 401
                code: UNAUTHENTICATED
                message: Request not authenticated due to missing, invalid, or expired credentials.
            GENERIC_401_AUTHENTICATION_REQUIRED:
              summary: Generic Authentication Required
              description: New authentication is needed, authentication is no longer valid
              value:
                status: 401
                code: AUTHENTICATION_REQUIRED
                message: New authentication is required.
    RetrieveLocationNotFound404:
      description: Not found
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            LOCATION_RETRIEVAL_404_UNABLE_TO_LOCATE_DEVICE:
              summary: The location server is not able to locate the device
              description: The location server is not able to locate the device
              value:
                status: 404
                code: LOCATION_RETRIEVAL.DEVICE_NOT_FOUND
                message: The location server is not able to locate the mobile
            GENERIC_404_DEVICE_NOT_FOUND:
              summary: Some identifier cannot be matched to a device
              description: One or more of the provided device identifiers do not match any device
              value:
                status: 404
                code: DEVICE_NOT_FOUND
                message: No device found for a provided identifier
    RetrieveLocationUnprocessableEntity422:
      description: Unprocessable Entity
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            LOCATION_RETRIEVAL_422_UNABLE_TO_FULFILL_MAX_AGE:
              summary: Unable to provide expected frehsness
              description: Unable to provide expected frehsness for location retrieval request
              value:
                status: 422
                code: LOCATION_RETRIEVAL.UNABLE_TO_FULFILL_MAX_AGE
                message: Unable to provide expected freshness for location
            GENERIC_422_UNPROCESSABLE_ENTITY:
              summary: Unprocessable entity
              description: The request was well-formed but was unable to be processed due to semantic errors or not applicable values. This is the generic error code for 422 responses.
              value:
                status: 422
                code: UNPROCESSABLE_ENTITY
                message: 'Value not acceptable: ...'
            GENERIC_422_DEVICE_NOT_APPLICABLE:
              summary: Service not applicable to the device
              description: The provided device is not compatible with the requested operation, according to the service provider rules.
              value:
                status: 422
                code: DEVICE_NOT_APPLICABLE
                message: The device is not applicable for the requested operation
            GENERIC_422_DEVICE_IDENTIFIERS_MISMATCH:
              summary: Device identifiers mismatch
              description: Several device identifiers are provided but do not match the same device
              value:
                status: 422
                code: DEVICE_IDENTIFIERS_MISMATCH
                message: The provided device identifiers do not match the same device
            GENERIC_422_UNSUPPORTED_DEVICE_IDENTIFIERS:
              summary: None of the provided device identifiers is supported by the implementation
              description: Message may list the supported device identifiers
              value:
                status: 422
                code: UNSUPPORTED_DEVICE_IDENTIFIERS
                message: 'Supported device supported are: ...'
            GENERIC_422_UNIDENTIFIABLE_DEVICE:
              summary: No identifier provided
              description: No device identifier provided for the device to be located
              value:
                status: 422
                code: UNIDENTIFIABLE_DEVICE
                message: A device must be provided
    Generic403:
      description: Forbidden
      headers:
        x-correlator:
          $ref: '#/components/headers/x-correlator'
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorInfo'
          examples:
            GENERIC_403_PERMISSION_DENIED:
              summary: Generic Permission Denied
              description: Permission denied. OAuth2 token access does not have the required scope or when the user fails operational security
              value:
                status: 403
                code: PERMISSION_DENIED
                message: Client does not have sufficient permissions to perform this action.
            GENERIC_403_INVALID_TOKEN_CONTEXT:
              summary: Invalid access token context
              description: Reflects some inconsistency between information in some field of the API and the related OAuth2 Token
              value:
                status: 403
                code: INVALID_TOKEN_CONTEXT
                message: '{{field}} is not consistent with access token.'
  examples:
    RETRIEVAL_POLYGON:
      summary: polygon-based device location retrieval
      description: The device is localized within a polygon delimited by the provided coordinates.
      value:
        lastLocationTime: '2023-10-17T13:18:23.682Z'
        area:
          areaType: POLYGON
          boundary:
          - latitude: 45.754114
            longitude: 4.860374
          - latitude: 45.753845
            longitude: 4.863185
          - latitude: 45.75249
            longitude: 4.861876
          - latitude: 45.751224
            longitude: 4.861125
          - latitude: 45.751442
            longitude: 4.859827
    RETRIEVAL_CIRCLE:
      summary: circle-based device location retrieval
      description: The device is localized within a circle with a center at the specified coordinates and a radius of 800 meters.
      value:
        lastLocationTime: '2023-10-17T13:18:23.682Z'
        area:
          areaType: CIRCLE
          center:
            latitude: 45.754114
            longitude: 4.860374
          radius: 800
  parameters:
    x-correlator:
      name: x-correlator
      in: header
      description: Correlation id for the different services
      schema:
        type: string
  schemas:
    RetrievalLocationRequest:
      description: Request to retrieve the location of a device. Device is not required when using a 3-legged access token, following the rules in the description.
      type: object
      properties:
        device:
          $ref: '#/components/schemas/Device'
        maxAge:
          type: integer
          description: Maximum age of the location information which is accepted for the location retrieval (in seconds). Absence of maxAge means "any age" and maxAge=0 means a fresh calculation.
    SingleIpv4Addr:
      description: A single IPv4 address with no subnet mask
      type: string
      format: ipv4
      example: 84.125.93.10
    Location:
      type: object
      description: Device location
      required:
      - lastLocationTime
      - area
      properties:
        lastLocationTime:
          description: Last date and time when the device was localized. It must follow RFC 3339 and must have time zone. Recommended format is yyyy-MM-dd'T'HH:mm:ss.SSSZ (i.e. which allows 2023-07-03T14:27:08.312+02:00 or 2023-07-03T12:27:08.312Z)
          type: string
          format: date-time
        area:
          $ref: '#/components/schemas/Area'
    AreaType:
      type: string
      description: 'Type of this area.

        CIRCLE - The area is defined as a circle.

        POLYGON - The area is defined as a polygon.

        '
      enum:
      - CIRCLE
      - POLYGON
    PhoneNumber:
      description: A public identifier addressing a telephone subscription. In mobile networks it corresponds to the MSISDN (Mobile Station International Subscriber Directory Number). In order to be globally unique it has to be formatted in international format, according to E.164 standard, prefixed with '+'.
      type: string
      pattern: ^\+[1-9][0-9]{4,14}$
      example: '+123456789'
    DeviceIpv4Addr:
      type: object
      description: 'The device should be identified by either the public (observed) IP address and port as seen by the application server, or the private (local) and any public (observed) IP addresses in use by the device (this information can be obtained by various means, for example from some DNS servers).


        If the allocated and observed IP addresses are the same (i.e. NAT is not in use) then  the same address should be specified for both publicAddress and privateAddress.


        If NAT64 is in use, the device should be identified by its publicAddress and publicPort, or separately by its allocated IPv6 address (field ipv6Address of the Device object)


        In all cases, publicAddress must be specified, along with at least one of either privateAddress or publicPort, dependent upon which is known. In general, mobile devices cannot be identified by their public IPv4 address alone.

        '
      properties:
        publicAddress:
          $ref: '#/components/schemas/SingleIpv4Addr'
        privateAddress:
          $ref: '#/components/schemas/SingleIpv4Addr'
        publicPort:
          $ref: '#/components/schemas/Port'
      anyOf:
      - required:
        - publicAddress
        - privateAddress
      - required:
        - publicAddress
        - publicPort
      example:
        publicAddress: 84.125.93.10
        publicPort: 59765
    Area:
      description: Base schema for all areas
      type: object
      properties:
        areaType:
          $ref: '#/components/schemas/AreaType'
      required:
      - areaType
      discriminator:
        propertyName: areaType
        mapping:
          CIRCLE: '#/components/schemas/Circle'
          POLYGON: '#/components/schemas/Polygon'
    ErrorInfo:
      description: Common schema for errors
      type: object
      required:
      - status
      - code
      - message
      properties:
        status:
          type: integer
          description: HTTP status code returned along with this error response
        code:
          type: string
          description: Code given to this error
        message:
          type: string
          description: Detailed error description
    DeviceIpv6Address:
      description: 'The device should be identified by the observed IPv6 address, or by any single IPv6 address from within the subnet allocated to the device (e.g. adding ::0 to the /64 prefix).

        '
      type: string
      format: ipv6
      example: 2001:db8:85a3:8d3:1319:8a2e:370:7344
    Port:
      description: TCP or UDP port number
      type: integer
      minimum: 0
      maximum: 65535
    Device:
      description: 'End-user equipment able to connect to a mobile network. Examples of devices include smartphones or IoT sensors/actuators.


        The developer can choose to provide the below specified device identifiers:


        * `ipv4Address`

        * `ipv6Address`

        * `phoneNumber`

        * `networkAccessIdentifier`


        NOTE1: the MNO might support only a subset of these options. The API invoker can provide multiple identifiers to be compatible across different MNOs. In this case the identifiers MUST belong to the same device

        NOTE2: for the Commonalities release v0.4, we are enforcing that the networkAccessIdentifier is only part of the schema for future-proofing, and CAMARA does not currently allow its use. After the CAMARA meta-release work is concluded and the relevant issues are resolved, its use will need to be explicitly documented in the guidelines.

        '
      type: object
      properties:
        phoneNumber:
          $ref: '#/components/schemas/PhoneNumber'
        networkAccessIdentifier:
          $ref: '#/components/schemas/NetworkAccessIdentifier'
        ipv4Address:
          $ref: '#/components/schemas/DeviceIpv4Addr'
        ipv6Address:
          $ref: '#/components/schemas/DeviceIpv6Address'
      minProperties: 1
    NetworkAccessIdentifier:
      description: A public identifier addressing a subscription in a mobile network. In 3GPP terminology, it corresponds to the GPSI formatted with the External Identifier ({Local Identifier}@{Domain Identifier}). Unlike the telephone number, the network access identifier is not subjected to portability ruling in force, and is individually managed by each operator.
      type: string
      example: 123456789@domain.com
  headers:
    x-correlator:
      description: Correlation id for the different services
      schema:
        type: string
  securitySchemes:
    openId:
      description: OpenID Provider Configuration Information.
      type: openIdConnect
      openIdConnectUrl: .well-known/openid-configuration
externalDocs:
  description: Product documentation at CAMARA.
  url: https://github.com/camaraproject/EdgeCloud