.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. Copyright (C) 2020 Nordix

.. _sdnc-a1-controller-api:

.. |nbsp| unicode:: 0xA0
   :trim:

.. |nbh| unicode:: 0x2011
   :trim:

##################
SDNC A1 Controller
##################

The A1 of a Near |nbh| RT |nbsp| RIC can be used through the SDNC A1 Controller.

Any version of the A1 API can be used. A call to the SDNC A1 Controller always contains the actual URL to the
Near |nbh| RT |nbsp| RIC, so here any of the supported API versions can be used. The controller just calls the provided
URL with the provided data.

Get Policy Type
~~~~~~~~~~~~~~~

POST
++++

  Gets a policy type.

   **URL path:**
    /restconf/operations/A1-ADAPTER-API:getA1PolicyType

  **Parameters:**

    None.

  **Body:** (*Required*)

      A JSON. ::

        {
          "input": {
            "near-rt-ric-url": "<url-to-near-rt-ric-to-get-type>"
          }
        }

  **Responses:**

    200:
      A JSON where the body tag contains the JSON object of the policy type. ::

        {
          "output": {
            "http-status": "integer",
            "body": "{
              <policy-type>
            }"
          }
        }

  **Examples:**

    Call: ::

      curl -X POST "http://localhost:8282/restconf/operations/A1-ADAPTER-API:getA1PolicyType"
      -H "Content-Type: application/json" -d "{
        \"input\": {
          \"near-rt-ric-url\": \"http://nearRtRic-sim1:8085/a1-p/policytypes/11\"
        }
      }"

    Result:
      200 ::

        {
          "output": {
            "http-status": 200,
            "body": "{
              "$schema": "http://json-schema.org/draft-07/schema#",
              "title": "Example_QoETarget_1.0.0",
              "description": "Example QoE Target policy type",
              "type": "object",
              "properties": {
                "scope": {
                  "type": "object",
                  "properties": {
                    "ueId": {
                      "type": "string"
                    },
                    "sliceId": {
                      "type": "string"
                    },
                    "qosId": {
                      "type": "string"
                    },
                    "cellId": {
                      "type": "string"
                    }
                  },
                  "additionalProperties": false,
                  "required": [
                    "ueId",
                    "sliceId"
                  ]
                },
                "statement": {
                  "type": "object",
                  "properties": {
                    "qoeScore": {
                      "type": "number"
                    },
                    "initialBuffering": {
                      "type": "number"
                    },
                    "reBuffFreq": {
                      "type": "number"
                    },
                    "stallRatio": {
                      "type": "number"
                    }
                  },
                  "minProperties": 1,
                  "additionalProperties": false
                }
              }
            }
          }
        }"

Put Policy
~~~~~~~~~~

POST
++++

  Creates or updates a policy instance.

   **URL path:**
    /restconf/operations/A1-ADAPTER-API:putA1Policy

  **Parameters:**

    None.

  **Body:** (*Required*)

      A JSON where the body tag contains the JSON object of the policy. ::

        {
          "input": {
            "near-rt-ric-url": "<url-to-near-rt-ric-to-put-policy>",
            "body": "object"
          }
        }

  **Responses:**

    200:
      A JSON with the response. ::

        {
          "output": {
            "http-status": "integer"
          }
        }

  **Examples:**

    Call: ::

      curl -X POST "http://localhost:8282/restconf/operations/A1-ADAPTER-API:getA1PolicyType"
      -H "Content-Type: application/json" -d "{
        \"input\": {
          \"near-rt-ric-url\": \"http://nearRtRic-sim1:8085/a1-p/policytypes/11/policies/3d2157af-6a8f-4a7c-810f-38c2f824bf12\",
          \"body\": \"{
            \"blocking_rate\":20,
            \"enforce\":true,
            \"trigger_threshold\":10,
            \"window_length\":10
          }\"
        }
      }"

    Result:
      200 ::

        {
          "output": {
            "http-status": 200
          }
        }

Get Policy
~~~~~~~~~~

POST
++++

  Gets a policy instance.

   **URL path:**
    /restconf/operations/A1-ADAPTER-API:getA1Policy

  **Parameters:**

    None.

  **Body:** (*Required*)

      A JSON. ::

        {
          "input": {
            "near-rt-ric-url": "<url-to-near-rt-ric-to-get-policy>"
          }
        }

  **Responses:**

    200:
      A JSON where the body tag contains the JSON object of the policy. ::

        {
          "output": {
            "http-status": "integer",
            "body": "{
              <policy>
            }"
          }
        }

  **Examples:**

    Call: ::

      curl -X POST "http://localhost:8282/restconf/operations/A1-ADAPTER-API:getA1Policy"
      -H "Content-Type: application/json" -d "{
        \"input\": {
          \"near-rt-ric-url\": \"http://nearRtRic-sim1:8085/a1-p/policytypes/11/policies/3d2157af-6a8f-4a7c-810f-38c2f824bf12\"
        }
      }"

    Result:
      200 ::

        {
          "output": {
            "http-status": 200,
            "body": "{
              \"blocking_rate\": 20,
              \"enforce\": true,
              \"trigger_threshold\": 10,
              \"window_length\": 10
            }"
          }
        }

Delete Policy
~~~~~~~~~~~~~

POST
++++

  Deletes a policy instance.

   **URL path:**
    /restconf/operations/A1-ADAPTER-API:deleteA1Policy

  **Parameters:**

    None.

  **Body:** (*Required*)

      A JSON. ::

        {
          "input": {
            "near-rt-ric-url": "<url-to-near-rt-ric-to-delete-policy>"
          }
        }

  **Responses:**

    200:
      A JSON with the response. ::

        {
          "output": {
            "http-status": "integer"
          }
        }

  **Examples:**

    Call: ::

      curl -X POST "http://localhost:8282/restconf/operations/A1-ADAPTER-API:deleteA1Policy"
      -H "Content-Type: application/json" -d "{
        \"input\": {
          \"near-rt-ric-url\": \"http://nearRtRic-sim1:8085/a1-p/policytypes/11/policies/3d2157af-6a8f-4a7c-810f-38c2f824bf12\"
        }
      }"

    Result:
      200 ::

        {
          "output": {
            "http-status": 202
          }
        }

Get Policy Status
~~~~~~~~~~~~~~~~~

POST
++++

  Get the status of a policy instance.

   **URL path:**
    /restconf/operations/A1-ADAPTER-API:getA1PolicyStatus

  **Parameters:**

    None.

  **Body:** (*Required*)

      A JSON. ::

        {
          "input": {
            "near-rt-ric-url": "<url-to-near-rt-ric-to-get-policy-status>"
          }
        }

  **Responses:**

    200:
      A JSON where the body tag contains the JSON object with the policy status according to the API version used. ::

        {
          "output": {
            "http-status": "integer",
            "body": "{
              <policy-status-object>
            }"
          }
        }

  **Examples:**

    Call: ::

      curl -X POST "http://localhost:8282/restconf/operations/A1-ADAPTER-API:getA1PolicyStatus"
      -H "Content-Type: application/json" -d "{
        \"input\": {
          \"near-rt-ric-url\": \"http://nearRtRic-sim1:8085/a1-p/policytypes/11/policies/3d2157af-6a8f-4a7c-810f-38c2f824bf12/status\"
        }
      }"

    Result:
      200 ::

        {
          "output": {
            "http-status": 200,
            "body": "{
              "instance_status": "IN EFFECT",
              "has_been_deleted": "true",
              "created_at": "Wed, 01 Apr 2020 07:45:45 GMT"
            }"
          }
        }