Content Comparison

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Interfaces

1. NST selection Request (from SO)
   1. Input: Service profiler parameters.

      {

      "requestInfo":{

      "transactionId":"c86b3019-39f4-4cd3-b847-b22afe9f36dc",

      "requestId":"c86b3019-39f4-4cd3-b847-b22afe9f36dc",

      "sourceId":"so",

      "timeout":600,

      "callbackUrl":"http://0.0.0.0:9000/callback/"

      },

      "serviceProfile":{

      "serviceProfileParameters":{

      "latency":20,

      "areaTrafficCapDL" : 10000,

      "coverageAreaTAList" : "India"
      }

      }

      }

2. Fetch Optimization policies
   1. vnfPolicy - it will identify the inventoryProvider and inventoryType - Forms demand policy.
   2. Attribute policy - for storing the serviceprofileparameters and its value as attribute - value pair- Constraint policy.
   3. QueryPolicy -  Its used to query the serviceprofileparameters from the input so that it can be added as a value to the attribute.
3. NST selection request - HASHAS 
   1. Demand: NST
   2. Constraint: Attribute policy for matching whether nst templates have these attributes.
4. Fetch NST metadata from AAI
   
   1. Output: List of all NSTs metadata .metadata 
   2. Sample Request:

      curl --user AAI:AAI -X GET -H "X-FromAppId:AAI" -H "X-TransactionId:get_aai_subscr" -H "Accept:application/json" -H "Content-Type:application/json" -k "https://10.31.4.27:30233/aai/v21/service-design-and-creation/models?model-role=NST&depth=2"

   3. Sample Response: 

      Code Block

      { "model":[ { "model-invariant-id":"50cd1233-dbec-4a46-a24f-46345a23635e", "model-type":"service", "model-role":"NST", "resource-version":"1607656942756", "model-vers":{ "model-ver":[ { "model-version-id":"bac7e4cb-c27e-48a8-999e-87531f192a1d", "model-name":"EmbbNST", "model-version":"1.0", "model-description":"TestNst", "resource-version":"1607656942756", "model-elements":{ "model-element":[ { "model-element-uuid":"23ecdf3f-f3fa-4715-8a86-65dc33c60cd2", "new-data-del-flag":"T", "cardinality":"unbounded", "resource-version":"1607656942756", "relationship-list":{ "relationship":[ { "related-to":"model-ver", "relationship-label":"org.onap.relationships.inventory.IsA", "related-link":"/aai/v21/service-design-and-creation/models/model/82194af1-3c2c-485a-8f44-420e22a9eaa4/model-vers/model-ver/46b92144-923a-4d20-b85a-3cbd847668a9", "relationship-data":[ { "relationship-key":"model.model-invariant-id", "relationship-value":"82194af1-3c2c-485a-8f44-420e22a9eaa4" }, { "relationship-key":"model-ver.model-version-id", "relationship-value":"46b92144-923a-4d20-b85a-3cbd847668a9" } ], "related-to-property":[ { "property-key":"model-ver.model-name", "property-value":"service-instance" } ] } ] } } ] } } ] } } ] }

      
      

5. Fetch NST candidate from SDC
   1. Input: NST metadata
   2. Sample Request: 

      curl -X GET -H "authorization: Basic YWFpOktwOGJKNFNYc3pNMFdYbGhhazNlSGxjc2UyZ0F3ODR2YW9HR21KdlV5MlU=" -H "x-ecomp-instanceid:AAI" -H 'Accept:application/octet-stream' -k https://10.31.4.27:30204/sdc/v1/catalog/services/bac7e4cb-c27e-48a8-999e-87531f192a1d/toscaModel

   3. Output: List of NST candidates matching the metadata
   4. Sample Response: 

      View file
      name nst.csar height 250

6. Run optimization  - taking attribute constraint, the candidates are filtered out matching the attributes.
7. Solution list is formed
   
   1. Solution List. Solution object have nst candidates matching the input service profile params.

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Sample Has Template:

{
   "name":"urllc_sample",
   "files":{

   },
   "limit":10,
   "num_solution":"1",
   "timeout":1200,
   "template":{
      "homing_template_version":"2020-08-13",
      "demands":{
         "nst_demand":[
            {
               "inventory_provider":"aai",
               "inventory_type":"nst",
               "unique":"true",
               "region":"RegionOne",
               "filtering_attributes":{
                  "model-role":"nst"
               }
            }
         ]
      },
      "constraints":{
         "nst_Threshold":{
            "type":"threshold",
            "demands":[
               "nst_demand"
            ],
            "properties":{
               "evaluate":[
                  {
                     "attribute":"latency",
                     "operator":"lte",
                     "threshold":30,
                     "unit":"ms"
                  }
               ]
            }
         }      },
      "optimization":{
         "goal": "minimize",
         "operation_function": {
            "operator": "sum",
            "operands": [{
               "function": "attribute",
               "params": {
                  "demand": "nst_demand",
                  "attribute": "latency"
               }
            }]
         }
      }
   }
}

Consumed APIs

GET NST metadata from AAI

GET NST cabdidates from SDC by the metadata got

Policies:

1. Attribute policy

   Code Block

   { "Threshold_nst": { "metadata": { "policy-id": "Threshold_nst", "policy-version": 1 }, "properties": { "geography": [], "identity": "Threshold_nst", "resources": [ "nst" ], "scope": [ "OSDF_GUILIN" ], "services": [ "nst" ], "thresholdProperties": [ { "attribute": "latency", "operator": "lte", "threshold": { "get_param": "latency" }, "unit": "ms" }, { "attribute": "reliability", "operator": "gte", "threshold": { "get_param": "reliability" }, "unit": "" } ] }, "type": "onap.policies.optimization.resource.ThresholdPolicy", "type_version": "1.0.0", "version": "1.0.0" } }

   
   

2. Query Policy

{
   "queryPolicy_nst": {
      "type": "onap.policies.optimization.service.QueryPolicy",
      "version": "1.0.0",
      "type_version": "1.0.0",
      "metadata": {
         "policy-id": "queryPolicy_nst",
         "policy-version": 1
      },
      "properties": {
      "scope": [
         "OSDF_GUILIN"
      ],
      "services": [
         "nst"
      ],
      "geography": [],
      "identity": "queryPolicy_nst",
      "queryProperties": [
         {
           "attribute": "latency",
           "attribute_location": "latency"
         },
         {
            "attribute": "reliability",
            "attribute_location": "reliability"
         }
      ]
    }
  }
}

3. vnf policy

{	
  "vnfPolicy_nst": {	
    "type": "onap.policies.optimization.resource.VnfPolicy",
    "version": "1.0.0",
    "type_version": "1.0.0",
    "metadata": {
      "policy-id": "vnfPolicy_nst",
      "policy-version": 1
    },
    "properties": {
      "scope": [
        "OSDF_GUILIN",
      ],
      "resources": [
        "nst"
      ],
      "services": [
        "nst"
      ],
      "identity": "vnf_nst",
      "applicableResources": "any",
      "vnfProperties": [
        {
		  "inventory_provider":"aai",
          "inventory_type":"nst",
          "unique":"true",
          "region":"RegionOne",
          "filtering_attributes":{
              "service-role":"nst"
          }
        }
      ]
    }
  }
}

{
    "nst_minimize_latency": {
        "metadata": {
            "policy-id": "nst_minimize_latency",
            "policy-version": 1
        },
        "properties": {
            "geography": [],
            "identity": "optimization",
            "goal": "minimize",
            "operation_function": {
                "operator": "sum",
                "operands": [
                    {
                        "function": "attribute",
                        "params": {
                            "attribute": "latency",
                            "demand": "nst"
                        }
                    }
                ]
            },
            "resources": [
                "nst"
            ],
            "scope": [
                "OSDF_GUILIN"
            ],
            "services": [
                "nst"
            ]
        },
        "type": "onap.policies.optimization.resource.OptimizationPolicy",
        "type_version": "2.0.0",
        "version": "1.0.0"
    }
}