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Table of Contents
outlinetrue

...

CCVPN Closed Loop Diagram

  1. SDC/CLAMP Portal design and activate policy.
  2. SDC/CLAMP config and activate the policy.
  3. SDC/CLAMP distribute the DCAE config.
  4. SDC/CLMAP distribute the alarm correlation rules to Holmes.
  5. 3rd party SOTN controller report link down alarm to DCAE
  6. DCAE will do data cleaning and filtering for the alarms
  7. DCAEk keep track the datas.
  8. Holmes do analysis for the alarms.
  9. Holmes notify the reroute event.
  10. Policy matching the reroute rules.
  11. Policy call SO to delete the old services and create the new services. For the creation flow, a variable route will be recalculated.

CLAMP  

Currently collector’s are not deployed on-demand, they are pre-deployed in DCAE and used by all the mS and all control loops. So the

...

  1. Collector on demand per control loop instance 
  2. Or, common APIs of  collector for updating collector at run time per control loop instantiation
  3. One instance of Holmes engine per control loop
  4. Configurable policy/actor/recipe mapping at PK

DCAE

DCAE  Diagram

       The APIs between SOTN Controller and the alarm notification collector following IETF-RESTCONF/YANG-PUSH notification standard:

  1. RestConf Collector (RC)subscribes for remote failure alarm to SOTN Controller (SC) 
  2. RC requests to set up a persistent connection with the 3rd party SC.
  3. As the connection is standing, SC pushes service route status data to the collector
  4. RC receives alarm data, converts it into JSON format and publishes on DMAAP with topic of ROUTE_ALARM_OUTPUT
  5. UVA consumes the alarm message
  6. UVA requests the RestConf2VES mapping from the mapper. As of CCVPN use case proposal, the RestConf2VES.xml is manually uploaded to the mapper.
  7. Mapper response back the mapping  
  8. UVA converts json alarm into VES  event
  9. UVA publishes the VES event on DMAAP for further correlation 

APIs to SOTN Controller (Restconf)

Subscribe Notification

Functionality

             Collector (Client) and SOTN Controller establishes subscription relationship. 

...

                }

           }

Establish

...

Persistent Connection

Functionality

           Collector establishes long term connectivity persistent connection with SOTN Controller and the controller will continuously Push the subscribed notification over. 

...

                }

          }

Restconf Notification 

This is the Route/LinkId sttatus Termination Point (TP) / Route status notification example from SOTN Controller to Restconf data collector, where "eventTime", "tp-id" and "oper-status" will be used in downstream logic.

Code Block
languagetext
titleService Down Alarm
collapsetrue
  
  "ietf-restconf:notification": {
    "eventTime": "2018-07-28T09:15:03.924Z",
    "ietf-yang-push:push-change-update": {
      "subscription-id": 1,
      "datastore-changes": {
        "ietf-yang-patch:yang-patch": {
          "patch-id": "d1d08ce8-b24d-4efb-a0e7-7b835642f2f1",
          "edit": [
            {
              "edit-id": "0",
              "operation": "merge",
              "target": "/network=providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F11providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F100/node=example-node/ietf-network-topology:termination-point=141234",
              "value": {
                "ietf-network-topology:termination-point": [
                  {
                    "supporting-termination-point": [
                      {
                        "network-ref": "providerId/5555/clientId/6666/topologyId/33",
                        "node-ref": "node-ref-example",
                        "tp-ref": "33488898"
                      }
                    ],
                    "ietf-eth-te-topology:svc": {
                      "client-facing": "true",
                      "supported-classification": {
                        "transparent": "true"
                      }
                    },
                    "ietf-te-topology:te": {
                      "admin-status": "up",
                      "interface-switching-capability": [
                        {
                          "encoding": "lsp-encoding-ethernet",
                          "max-lsp-bandwidth": [
                            {
                              "priority": "7",
                              "te-bandwidth": {
                                "ietf-eth-te-topology:eth-bandwidth": "1000000"
                              }
                            }
                          ],
                          "switching-capability": "switching-l2sc"
                        }
                      ],
                      "oper-status": "updown",
                      "inter-domain-plug-id": "51000"
                    },
                    "ietf-te-topology:te-tp-id": "11234",
                    "tp-id": "11234"
                  }
                ]
              }
            }
          ]
        }
      }
    }
  }

Route Alarm Message

This is the message definition at output of Restconf collector to DMAAP with topic of adds one attribute, "notify_oid", to the above JSON data, and publishes it to DMAAP topic RESTCONF_ALARM_TOPIC.

...

languagetext
titleRestconf Collector Output (JSON)
collapsetrue

...

This added attribute is used by Universal VES Adapter (Mapper) to identify that this JSON data is from Restconf.

Questions (To be answered): 

  1. Universal VES Adapter reads all data from a single DMaaP topic, which is specified in / UniversalVesAdapter / src / main / resources / application.properties and defined in  / UniversalVesAdapter / src / main / resources / dme2 / consumer.properties. We should publish Restconf data to the general topic, instead of a specific one, RESTCONF_ALARM_TOPIC.
  2. If we do publish the data to a Restconf specific topic, Mapper should be tell that the data is from Restconf, and we do not need to add this "notify_oid" attribute.

Code Block
languagetext
titleRestconf Collector Output (JSON)
collapsetrue
{
  "notify_oid" : "example-mappingfile-id.x.1",
  
  "ietf-restconf:notification": {
    "eventTime": "2018-07-28T09:15:03.924Z",
    "ietf-yang-push:push-change-update": {
      "subscription-id": 1,
      "datastore-changes": {
        "ietf-yang-patch:yang-patch": {
          "patch-id": "d1d08ce8-b24d-4efb-a0e7-7b835642f2f1",
          "edit": [
            {
              "edit-id": "0",
              "operation": "merge",
              "target": "/network=providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F11providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F100/node=example-node/ietf-network-topology:termination-point=141234",
              "value": {
                "ietf-network-topology:termination-point": [
                  {
                    "supporting-termination-point": [
                      {
                        "network-ref": "providerId/5555/clientId/6666/topologyId/33",
                        "node-ref": "node-ref-example",
                        "tp-ref": "33488898"
                      }
                    ],
                    "ietf-eth-te-topology:svc": {
                      "client-facing": "true",
                      "supported-classification": {
                        "transparent": "true"
                      }
                    },
                    "ietf-te-topology:te": {
                      "admin-status": "up",
                      "interface-switching-capability": [
                        {
                          "encoding": "lsp-encoding-ethernet",
                          "max-lsp-bandwidth": [
                            {
                              "priority": "7",
                              "te-bandwidth": {
                                "ietf-eth-te-topology:eth-bandwidth": "1000000"
                              }
                            }
                          ],
                          "switching-capability": "switching-l2sc"
                        }
                      ],
                      "oper-status": "updown",
                      "inter-domain-plug-id": "51000"
                    },
                    "ietf-te-topology:te-tp-id": "11234",
                    "tp-id": "11234"
                  }
                ]
              }
            }
          ]
        }
      }
    }
  }
}                          

VES MAPPER

...

Universal VES Adapter (Mapper)

Mapper reads Restconf data from DMaaP topic RESTCONF_ALARM_TOPIC, and uses Smooks to convert it into a standard VES format.

Mapper uses the Restconf2VES.xml to map the Restconf data to VES data. The Restconf2VES.xml could be uploaded to DCAE at the closed loop deployment from DCAE Designer. For now, it will be manually uploaded to the mapper at the closed loop instantiation.   

Mapping

...

XML Restconf2VES.xml


Code Block
languagetext
titleRestconf2VES.xml
collapsetrue

UVA subscribes RESTCONF_ALARM_TOPIC on DMAAP.

Route Status Alarm 

Code Block
languagetext
titleRoute Status Alarm (VES/CEDM)
collapsetrue
{
#... for illustration, not a working version
 
 "event": {         "commonEventHeader": “varbinds:”:  [{
            "sourceId": "example-target", // 'target' from the restconf notification.     “name”:  “network-ref”,
                 “value”:  “$network-ref”
 "startEpochMicrosec": 1413378172000000,             "eventId": "ab305d54-85b4-a31b-7db2-fb6b977766",  },
          "sequence": 0,       {
     "domain": "fault",            “name” "lastEpochMicrosec": 1413378172000033“node-ref",
            "eventName": "Fault_Route_Status",
         “value”:  “$node-ref”
        "sourceName": "example-target", // 'Target' from the restconf notification.   },
         "priority": "High",        {
    "version": 3.0,             "reportingEntityName": "Domain_Contorller"“name”: “tp-ref”,
         },         "faultFields": {“value”:“$tp-ef”,
              "eventSeverity": "CRITICAL",   },
         "alarmCondition": "Route_Down",        {
    "faultFieldsVersion": 2.0,             "specificProblem": "Fault_SOTN_Service_Status"“name”:  “te-tp-id”,
            "alarmAdditionalInformation": [     “value”:  “$te-tp-id”
         {         },        "name": "linkId",          
                  {
        "value": "example-linkId"         “name”:  “tp-id”,
     },             “value”:  “$tp-id”
 {                 "name": "nodeId"},
                  {
                  “name”: "value": "example-nodeId" “inter-domain-plug-id”,
                },  “value”:  “$inter-domain-plug-id”
            {      }
          "name": "topologyId", ]
          }


The following is how the resulted VES event data looks like. The event will be published to DMaaP topic unauthenticated.SEC_FAULT_OUTPUT, to be consumed by Holmes.

VES Event 

Code Block
languagetext
titleRoute Status Alarm (VES/CEDM)
collapsetrue
{
    "event": {
        "commonEventHeader": {
            "valuesourceId": "example-topologyIdtarget", // 'target' from the restconf notification.
            }"startEpochMicrosec": 1413378172000000,
            "eventId": "ab305d54-85b4-a31b-7db2-fb6b977766",
  {          "sequence": 0,
      "name      "domain": "tp-idfault",
            "lastEpochMicrosec": 1413378172000033,
            "eventName": "Fault_Route_Status",
            "valuesourceName": "example-tp-id" target", // 'Target' from the restconf notification.
            "priority": "High",
            "version": 3.0,
            "reportingEntityName": "Domain_Contorller"
    }    },
        "faultFields": ]{
            "eventSourceTypeeventSeverity": "otherCRITICAL",
            "vfStatusalarmCondition": "ActiveRoute_Status",
        }     }
}

These alarms are published to the unauthenticated.SEC_FAULT_OUTPUT topic of DMaaP.  

DCAE Blueprints

The initial/default configuration of restconf collector and Holmes are specified in the following micro-service blueprints. 

Blueprint for Restconf Collector

...

languagetext
titleRestconf.yaml.template
collapsetrue

Blueprint for Holmes Rule Manager

...

languagetext
titleHolmes-rules.yaml.template
collapsetrue

HOLMES (WIP)

CCVPN Close Loop requires Holmes to correlate route down alarms from SOTN Controllers from different sites. (Refer to this page on Holmes installation,)

In Phase 1, for the minimum, two of the above defined Route_Down_Alarm will be correlated within time window of 15 - 30, for instance, milliseconds.  (Refer to this page as examples.)

Rule Creation

Code Block
languagetext
titleHolmes Rule
collapsetrue
{
 
"ruleName": "CCVPN",
 
"loopControlName": "ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55b",
 
"description": "This rule is designed for the correlation analysis for the CCVPN use case.",
 
"content": "package org.onap.holmes.droolsRule;\n\nimport org.onap.holmes.common.dmaap.DmaapService;\nimport org.onap.holmes.common.api.stat.VesAlarm;\nimport org.onap.holmes.common.aai.CorrelationUtil;\nimport org.onap.holmes.common.dmaap.entity.PolicyMsg;\nimport org.onap.holmes.common.dropwizard.ioc.utils.ServiceLocatorHolder;\nimport org.onap.holmes.common.utils.DroolsLog;\n \n\nrule \"Relation_analysis_Rule\"\nsalience 200\nno-loop true\n    when\n        $root : VesAlarm(alarmIsCleared == 0,\n"faultFieldsVersion": 2.0,
            "specificProblem": "Fault_SOTN_Service_Status",
            "alarmAdditionalInformation": [
                {
                "name": "networkId",                    
                "value": "providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F100"               
                },
                {
                "name": "node",                    
                "value": "example-node"                
                },               
                {
                "name": "tp-id",                    
                "value": "1234"               
                },
                {
                "name": "oper-status",
                "value": "down"
                }
            ]
            "eventSourceType": "other",
            "vfStatus": "Active"
        }
    }
}


DCAE Blueprints

The initial/default configuration of restconf collector and Holmes are specified in the following micro-service blueprints. 

Blueprint for Restconf Collector

Code Block
languagetext
titleRestconf.yaml.template
collapsetrue
version: '2.1'
services:
   restconfcollector:
      image: "restconfcollector"
      container_name: "restconf_collector"
      restart: "always"
      hostname: "restconf-collector"
   labels:
       - "SERVICE_NAME=restconf_collector"



Blueprint for Holmes Rule Manager

Code Block
languagetext
titleHolmes-rules.yaml.template
collapsetrue


HOLMES (WIP)

CCVPN Close Loop requires Holmes to correlate route down alarms from SOTN Controllers from different sites. (Refer to this page on Holmes installation,)

In Phase 1, for the minimum, two of the above defined Route_Down_Alarm will be correlated within time window of 15 - 30, for instance, milliseconds.  (Refer to this page as examples.)

Rule Creation

Code Block
languagejs
titleHolmes Rule
collapsetrue
{
    "content":"package org.onap.holmes.ccvpn;\n\ndialect \"java\"\n\nimport org.onap.holmes.common.api.stat.VesAlarm;\nimport org.onap.holmes.common.api.stat.AlarmAdditionalField;\nimport org.onap.holmes.common.aai.AaiQuery4Ccvpn;\nimport org.onap.holmes.common.exception.CorrelationException;\nimport org.onap.holmes.common.dmaap.entity.PolicyMsg;\nimport org.onap.holmes.common.dmaap.DmaapService;\nimport org.onap.holmes.common.utils.DroolsLog;\nimport org.onap.holmes.common.dropwizard.ioc.utils.ServiceLocatorHolder;\n\nimport com.alibaba.fastjson.JSONArray;\nimport com.alibaba.fastjson.JSONObject;\n\nimport java.util.List;\nimport java.util.Map;\nimport java.util.ArrayList;\nimport java.util.HashMap;\nimport java.util.UUID;\n\nfunction String getAdditionalField(VesAlarm a, String field) {\n	List<AlarmAdditionalField> fields = a.getAlarmAdditionalInformation();\n	for (AlarmAdditionalField f : fields) {\n		if (f.getName().equals(field)) {\n			return f.getValue();\n		}\n	}\n	return null;\n}\n\nfunction String getLogicLink(VesAlarm alarm) {\n	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();\n	return aai.getLogicLink(\n		getAdditionalField(alarm, \"networkId\"),\n		getAdditionalField(alarm, \"node\"),\n		getAdditionalField(alarm, \"tp-id\"),\n		null\n	);\n}\n\nfunction boolean isCorrelated(VesAlarm a, VesAlarm b) {\n	String logicLinkA = getLogicLink(a);\n	if (logicLinkA == null)	{\n		return false;\n	}\n\n	String logicLinkB = getLogicLink(b);\n	if (logicLinkB == null) {\n		return false;\n	}\n\n	return logicLinkA.equals(logicLinkB);\n}\n\nfunction void updateAaiLinkStatus(String linkName, String status) {\n	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();\n	Map<String, Object> body = new HashMap<String, Object>(){\n		{\n			put(\"operational-status\", status);\n		}\n	};\n	aai.updateLogicLinkStatus(linkName, body);\n}\n\nfunction void updateAaiTpStatus(String networkId, String pnfName, String ifName, String status) {\n	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();\n	Map<String, Object> body = new HashMap<String, Object>(){\n		{\n			put(\"operational-status\", status);\n		}\n	};\n	aai.updateTerminalPointStatus(networkId, pnfName, ifName, body);\n}\n\nfunction Map<String, Object> getAdditionalResourceInfo(String networkId, String pnfName, String ifName, String status) {\n	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();\n	JSONArray instances = aai.getServiceInstances(networkId, pnfName, ifName, status);\n\n	Map<String, Object> ret = new HashMap<String, Object>();\n\n	StringBuilder sbn = new StringBuilder();\n	StringBuilder sbi = new StringBuilder();\n	for(int i = 0; i < instances.size(); ++i) {\n		JSONObject o = instances.getJSONObject(i);\n		String name = o.getString(\"service-instance-name\");\n		String id = o.getString(\"service-instance-id\");\n		ret.put(id + \".input-parameters\", o.getString(\"input-parameters\"));\n		sbn.append(name).append(\",\");\n		sbi.append(id).append(\",\");\n	}\n	ret.put(\"service-instance.service-instance-name\", sbn.substring(0, sbn.length() -1).toString());\n	ret.put(\"service-instance.service-instance-id\", sbi.substring(0, sbi.length() -1).toString());\n	ret.put(\"vserver.vserver-name\", \"TBD\");\n	ret.put(\"globalSubscriberId\", instances.getJSONObject(0).getString(\"globalSubscriberId\"));\n	ret.put(\"serviceType\", instances.getJSONObject(0).getString(\"serviceType\"));\n\n	return ret;\n}\n\nfunction PolicyMsg createPolicyMsg(VesAlarm alarm) {\n	PolicyMsg m = new PolicyMsg();\n	m.setPolicyVersion(\"1.0.0.5\");\n	m.setPolicyName(\"CCVPN\");\n	m.setPolicyScope(\"service=SOTNService,type=SampleType,closedLoopControlName=CL-CCVPN-d925ed73-8231-4d02-9545-db4e101f88f8\");\n	m.setClosedLoopControlName(DmaapService.loopControlNames.get(\"org.onap.holmes.ccvpn\"));\n	m.setRequestID(UUID.randomUUID().toString());\n	m.setClosedLoopAlarmStart(alarm.getStartEpochMicrosec());\n	m.setClosedLoopAlarmEnd(alarm.getLastEpochMicrosec());\n	m.setTarget(\"vserver.vserver-name\");\n	m.setAai(getAdditionalResourceInfo(\n		getAdditionalField(alarm, \"networkId\"),\n		getAdditionalField(alarm, \"node\"),\n		getAdditionalField(alarm, \"tp-id\"),\n		getAdditionalField(alarm, \"oper-status\")\n	));\n\n	DmaapService.alarmUniqueRequestID.put(alarm.getEventId(), m.getRequestID());\n\n	return m;\n}\n\nrule \"Update AAI Information\"\n	no-loop true\n	salience 300\n	when\n		$a: VesAlarm(eventName.indexOf(\"Fault_Route_Status\") != -1)\n	then\n		updateAaiTpStatus (\n			getAdditionalField($a, \"networkId\"),\n			getAdditionalField($a, \"node\"),\n			getAdditionalField($a, \"tp-id\"),\n			getAdditionalField($a, \"oper-status\")\n		);\nend\n\nrule \"Set Up Correlation\"\n	no-loop true\n	salience 200\n	when\n		$a: VesAlarm($id: eventId, \n						$start: startEpochMicrosec, \n						eventName.indexOf(\"Fault_Route_Status\") != -1)\n		$b: VesAlarm(eventId != $id, \n						eventName.indexOf(\"Fault_Route_Status\") != -1, \n						Math.abs(startEpochMicrosec - $start) < 60000)\n	then\n		String status = \"down\";\n		if (status.equalsIgnoreCase(getAdditionalField($a, \"oper-status\")) \n				&& status.equalsIgnoreCase(getAdditionalField($b, \"oper-status\"))) {\n		    if (isCorrelated($a, $b)){\n		    	// If any of the alarms have been marked as root, a policy message has ever been created and sent. Do NOT send it again.\n		    	if ($a.getRootFlag() != 1 && $b.getRootFlag() != 1) {\n			    	PolicyMsg msg = createPolicyMsg($a);\n			        DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);\n			        dmaapService.publishPolicyMsg(msg, \"unauthenticated.DCAE_CL_OUTPUT\");\n			        updateAaiLinkStatus(getLogicLink($a), status);\n		    	}\n		        $a.setRootFlag(1);\n		        $b.setRootFlag(1);\n		        update($a);\n		        update($b);\n		    }\n	    }\nend\n\nrule \"Clear Alarms\"\n	no-loop true\n	salience 100\n	when\n		$a: VesAlarm(eventName.indexOf(\"Fault_Route_Status\") != -1)\n	then\n		if (\"up\".equalsIgnoreCase(getAdditionalField($a, \"oper-status\"))) {\n			if (DmaapService.alarmUniqueRequestID.containsKey($a.getEventId())) {\n				DmaapService.alarmUniqueRequestID.remove($a.getEventId());\n			}\n	\n			//TODO: send alarm clearing message to Policy - for now it's not needed.\n	        //...\n	\n			retract($a);\n		}\nend\n",
    "description":"This rule is designed for the correlation analysis for the CCVPN use case.",
    "enabled":1,
    "loopControlName":"ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55b",
    "ruleName":"CCVPN"
}


To illustrate, the content field in the above rule is presented as readable format in the following. We need to convert it to valid json string when uploading to Holmes.


Code Block
languagejava
titleHolmes Rule Content
collapsetrue
package org.onap.holmes.ccvpn;

dialect "java"

import org.onap.holmes.common.api.stat.VesAlarm;
import org.onap.holmes.common.api.stat.AlarmAdditionalField;
import org.onap.holmes.common.aai.AaiQuery4Ccvpn;
import org.onap.holmes.common.exception.CorrelationException;
import org.onap.holmes.common.dmaap.entity.PolicyMsg;
import org.onap.holmes.common.dmaap.DmaapService;
import org.onap.holmes.common.utils.DroolsLog;
import org.onap.holmes.common.dropwizard.ioc.utils.ServiceLocatorHolder;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import java.util.List;
import java.util.Map;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.UUID;

function String getAdditionalField(VesAlarm a, String field) {
	List<AlarmAdditionalField> fields = a.getAlarmAdditionalInformation();
	for (AlarmAdditionalField f : fields) {
		if (f.getName().equals(field)) {
			return f.getValue();
		}
	}
	return null;
}

function String getLogicLink(VesAlarm alarm) {
	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();
	return aai.getLogicLink(
		getAdditionalField(alarm, "networkId"),
		getAdditionalField(alarm, "node"),
		getAdditionalField(alarm, "tp-id"),
		null
	);
}

function boolean isCorrelated(VesAlarm a, VesAlarm b) {
	String logicLinkA = getLogicLink(a);
	if (logicLinkA == null)	{
		return false;
	}

	String logicLinkB = getLogicLink(b);
	if (logicLinkB == null) {
		return false;
	}

	return logicLinkA.equals(logicLinkB);
}

function void updateAaiLinkStatus(String linkName, String status) {
	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();
	Map<String, Object> body = new HashMap<String, Object>(){
		{
			put("operational-status", status);
		}
	};
	aai.updateLogicLinkStatus(linkName, body);
}

function void updateAaiTpStatus(String networkId, String pnfName, String ifName, String status) {
	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();
	Map<String, Object> body = new HashMap<String, Object>(){
		{
			put("operational-status", status);
		}
	};
	aai.updateTerminalPointStatus(networkId, pnfName, ifName, body);
}

function Map<String, Object> getAdditionalResourceInfo(String networkId, String pnfName, String ifName, String status) {
	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();
	JSONArray instances = aai.getServiceInstances(networkId, pnfName, ifName, status);

	Map<String, Object> ret = new HashMap<String, Object>();

	StringBuilder sbn = new StringBuilder();
	StringBuilder sbi = new StringBuilder();
	for(int i = 0; i < instances.size(); ++i) {
		JSONObject o = instances.getJSONObject(i);
		String name = o.getString("service-instance-name");
		String id = o.getString("service-instance-id");
		ret.put(id + ".input-parameters", o.getString("input-parameters"));
		sbn.append(name).append(",");
		sbi.append(id).append(",");
	}
	ret.put("service-instance.service-instance-name", sbn.substring(0, sbn.length() -1).toString());
	ret.put("service-instance.service-instance-id", sbi.substring(0, sbi.length() -1).toString());
	ret.put("vserver.vserver-name", "TBD");
	ret.put("globalSubscriberId", instances.getJSONObject(0).getString("globalSubscriberId"));
	ret.put("serviceType", instances.getJSONObject(0).getString("serviceType"));

	return ret;
}

function PolicyMsg createPolicyMsg(VesAlarm alarm) {
	PolicyMsg m = new PolicyMsg();
	m.setPolicyVersion("1.0.0.5");
	m.setPolicyName("CCVPN");
	m.setPolicyScope("service=SOTNService,type=SampleType,closedLoopControlName=CL-CCVPN-d925ed73-8231-4d02-9545-db4e101f88f8");
	m.setClosedLoopControlName(DmaapService.loopControlNames.get("org.onap.holmes.ccvpn"));
	m.setRequestID(UUID.randomUUID().toString());
	m.setClosedLoopAlarmStart(alarm.getStartEpochMicrosec());
	m.setClosedLoopAlarmEnd(alarm.getLastEpochMicrosec());
	m.setTarget("vserver.vserver-name");
	m.setAai(getAdditionalResourceInfo(
		getAdditionalField(alarm, "networkId"),
		getAdditionalField(alarm, "node"),
		getAdditionalField(alarm, "tp-id"),
		getAdditionalField(alarm, "oper-status")
	));

	DmaapService.alarmUniqueRequestID.put(alarm.getEventId(), m.getRequestID());

	return m;
}

rule "Update AAI Information"
	no-loop true
	salience 300
	when
		$a: VesAlarm(eventName.indexOf("Fault_Route_Status") != -1)
	then
		updateAaiTpStatus (
			getAdditionalField($a, "networkId"),
			getAdditionalField($a, "node"),
			getAdditionalField($a, "tp-id"),
			getAdditionalField($a, "oper-status")
		);
end

rule "Set Up Correlation"
	no-loop true
	salience 200
	when
		$a: VesAlarm($id: eventId, 
						$start: startEpochMicrosec, 
						eventName.indexOf("Fault_Route_Status") != -1)
		$b: VesAlarm(eventId != $id, 
						eventName.indexOf("Fault_Route_Status") != -1, 
						Math.abs(startEpochMicrosec - $start) < 60000)
	then
		String status = "down";
		if (status.equalsIgnoreCase(getAdditionalField($a, "oper-status")) 
				&& status.equalsIgnoreCase(getAdditionalField($b, "oper-status"))) {
		    if (isCorrelated($a, $b)){
		    	// If any of the alarms have been marked as root, a policy message has ever been created and sent. Do NOT send it again.
		    	if ($a.getRootFlag() != 1 && $b.getRootFlag() != 1) {
			    	PolicyMsg msg = createPolicyMsg($a);
			        DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);
			        dmaapService.publishPolicyMsg(msg, "unauthenticated.DCAE_CL_OUTPUT");
			        updateAaiLinkStatus(getLogicLink($a), status);
		    	}
		        $a.setRootFlag(1);
		        $b.setRootFlag(1);
		        update($a);
		        update($b);
		    }
	    }
end

rule "Clear Alarms"
	no-loop true
	salience 100
	when
		$a: VesAlarm(eventName.indexOf("Fault_Route_Status") != -1)
	then
		if ("up".equalsIgnoreCase(getAdditionalField($a, "oper-status"))) {
			if (DmaapService.alarmUniqueRequestID.containsKey($a.getEventId())) {
				DmaapService.alarmUniqueRequestID.remove($a.getEventId());
			}
	
			//TODO: send alarm clearing message to Policy - for now it's not needed.
	        //...
	
			retract($a);
		}
end


Rule Execution


After the correlation is done successfully,  there should be a corresponding control loop event defined in the following section published on the unauthenticated.DCAE_CL_OUTPUT topic of DMaaP.

POLICY

Policy Creation

Code Block
languagetext
titleOperational Policy - Yaml
collapsetrue
controlLoop:
  version: 2.0.0
  controlLoopName: ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c66b
  trigger_policy: unique-policy-id-16-Reroute
  timeout: 3600
  abatement: false
  
policies:
  - id: unique-policy-id-16-Reroute
    name: Connectivity Reroute
    description:
    actor: SDNC
    recipe: Reroute
    target:
      type: VM
    retry: 3
    timeout: 1200
    success: final_success
    failure: final_failure
    failure_timeout: final_failure_timeout
    failure_retries: final_failure_retries
    failure_exception: final_failure_exception
    failure_guard: final_failure_guard

  


For now, Policy bases on the parameters looked up and encoded in by Holmes to the 'AAI' portion of the following event to invoke SDNC API to re-route the network connectivity. 

Code Block
languagetext
titleDCAE Control Loop Event (Holmes)
collapsetrue
{
    "closedLoopEventClient": "DCAE.HolmesInstance",
    "policyVersion": "1.0.0.5",
    "policyName": "CCVPN",
    "policyScope": "service=SOTNService,type=SampleType,closedLoopControlName=CL-CCVPN-d925ed73-8231-4d02-9545-db4e101f88f8",
    "target_type": "VM",
    "AAI": {
        "vserver.vserver-name" : "TBD",
		"globalSubscriberId" : "e151059a-d924-4629-845f-264db19e50b4",
		"serviceType" : "SOTN",
        "service-information.service-instance-id" : "service-instance-id-example-1",
        "network-information. network-id " : "id"
    },
    "closedLoopAlarmStart": 1484677482204798,
    "closedLoopEventStatus": "ONSET",
    "closedLoopControlName": "ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c66b",
    "version": "1.0.2",
    "target": "vserver.vserver-name",
    "requestID": "97964e10-686e-4790-8c45-bdfa61df770f",
    "from": "DCAE"
}


Policy Engine subscribes the unauthenticated.DCAE_CL_OUTPUT on DMAAP. 

AAI Enrichment APIs

DCAE VES event  A&AI enrichment for previous use cases are defined here as reference.   More CCVPN related AAI API discussion can be found on this page, 

Note:  pnfName = Nodeid and p-interface-name = tp-id

  • The query logic from tp-id through service instance is that : p-interface   →   vpn-vpnbinding →  connectivity → service instance.  Then from service-instance to 'customer-request' for service instance recreation for phase 1.
  • For event from different tp-id to be correlated:  p-interface →  logical link, then logic link is the same from ONAP domain.
  • When link down event is detected, Closed Loop needs to update logical-link/p-interface's operational-status to “DOWN” for the recreated service instance picking up new links.

The following APIs are used to support the above looking up.

Status Update

Code Block
languagetext
titleUpdate TP Status
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/network-resources/network-resource/{networkId}/pnfs/pnf/{pnfName}/p-interfaces/p-interface/{ifName}
Method: PATCH
Request Body:
{
    "operational-status": "some status"
}
Code Block
languagetext
titleUpdate Logic-link Status
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/logical-links/logical-link/{linkName}
Method: PATCH
Request Body:
{
    "operational-status": "some status"
}

Service Instance ID Look Up

Code Block
languagetext
titleGet vpn-binding from TP
collapsetrue
URL:
https://<AAI host>:<AAI port>/aai/v14/network/network-resources/network-resource/{networkId}/pnfs/pnf/{pnfName}/p-interfaces?interface-name={ifName}&operational-status={status}
Method: GET
Request Body:
{
}

Response Body:
{
    "results": [
      {
        "p-interface": {
          "interface-name": "{ifName}",
          "network-ref": "some ref",
          "transparent": "some value",
          "operational-status ": "{status}",
          "speed-value": "some speed",
          "relationship-list": {
              "relationship" : [
                  {
                      "related-to": "vpn-binding",
                      "related-link": "url of vpn-binding",
                      "relationship-data": [
                         "relationship-key": "vpn-binding.vpn-id",
                         "relationship-value": "some id"
                      ]
                  }
              ]
          }
        }
      }
    ]
}
Code Block
languagetext
titleGet connectivity from vpn-binding
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/vpn-bindings?vpn-id={vpnId}
Method: GET
Request Body:
{
}

Response Body:
{
    "results": [
      {
        "vpn-binding": {
          "vpn-id": "{vpnId}",
          "vpn-name": "some name",
          "access-provider-id": "provider id",
          "access-client-id": "client id",
          "access-topology-id": "topology id",
          "src-access-node-id": "src node id",
          "src-access-ltp-id": "src ltp id",
          "dst-access-node-id": "dst node id",
          "dst-access-ltp-id": "dst ltp id,
          "operational-status": "some status",
          "relationship-list": {
              "relationship" : [
                  {
                      "related-to": "connectivity",
                      "related-link": "url of connectivity",
                      "relationship-data": [
                         "relationship-key": "connectivity. connectivity-id",
						 "relationship-value": "some id"
                      ]
                  }
              ]
           }
        }
      }
    ]
}
Code Block
languagetext
titleQuery service instances by connectivity
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/connectivities/connectivity/{connectivityId}
Method: Get
Request Body:
{
}
Response Body:
{
    "results": [
      {
        "connectivity": {
          "connectivity-id": "{connectivityId}",
          "bandwidth-profile-name": "some profile",
          "vpn-type": "some type",
          "cir": "cir value",
          "eir": "eir value",
          "cbs": "cbs value",
          "ebs": "ebs value",
          "color-aware": "color value",
          "coupling-flag": "flag value",
          "etht-svc-name": "some name",
          "access-provider-id": "provider id",
          "access-client-id": "client id",
          "access-topology-id": "topology id",
          "access-node-id": "node id",
          "access-ltp-id": "ltp id",
          "connectivity-selflink": "some URL",
          "cvlan ": "some tag",
          "operational-status": "some status",
          "relationship-list": {
              "relationship" : [
                  { 
                      "related-to": "service-instance",
                      "related-link": "url of service-instance",
                      "relationship-data": [                         
							"relationship-key": "service-instance.service-instance-id",                         
							"relationship-value": "some id"
                      ]
                  }
              ]
          }
      }
    ]
Code Block
languagetext
titleGet all 3 services instances from CCVPN
collapsetrue
From service-instance URL:

URL: https://<AAI host>:<AAI port>/aai/v14/business/customers/customer/{global-customer-id}/service-subscriptions/service-subscription/{service-type}/service-instances?service-instance-id={servId}

Derive the service-subscription URL:
URL: https://<AAI host>:<AAI port>/aai/v14/business/customers/customer/{global-customer-id}/service-subscriptions/service-subscription/{service-type}


Method: GET
Request Body:
{
}
Response Body:
{
    "results": [
      {
        "service-subscription": {
          "service-type": "{service-type}",
          "temp-ub-sub-account-id": "some sub account",
          "service-instances": {
              "service-instance": [
                {
                  "service-instance-id": "some id 1",
                  "service-instance-name": "some name 1",
                  "environment-context": "some context 1",
                  "workload-context": "some workload 1",
                  "relationship-list": {
                      "relationship" : [
                      ]
                  }
                },
                {
                  "service-instance-id": "some id 2",
                  "service-instance-name": "some name 2",
                  "environment-context": "some context 2",
                  "workload-context": "some workload 2",
                  "relationship-list": {
                $sourceId: sourceId, sourceId != null && !sourceId.equals(\"\"),\n\t\t\t$sourceName: sourceName, sourceName != null && !sourceName.equals(\"\"),\n\t\t\t$startEpochMicrosec: startEpochMicrosec,\n"relationship" : [
                      ]
       specificProblem in (\"Fault_SOTN_Service_Failure\"),\n         }
  $eventId: eventId)\n        $child : VesAlarm( eventId != $eventId, parentId == null,\n},
                {
                 specificProblem in (\"Fault_SOTN_Service_Failure\"),\n "service-instance-id": "some id 3",
            startEpochMicrosec < $startEpochMicrosec + 60000 && startEpochMicrosec > $startEpochMicrosec - 60000 )\n    then\n\t\t$child.setParentId($root.getEventId());\n\t\tupdate($child);\n\t\t\nend\n\nrule \"root_has_child_handle_Rule\"\nsalience 150\nno-loop true\n\twhen\n\t\t$root : VesAlarm(alarmIsCleared == 0, rootFlag == 0, $eventId: eventId)\n\t\t$child : VesAlarm(eventId != $eventId, parentId == $eventId)\n\tthen\n\t\tDmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);\n\t\tPolicyMsg policyMsg = dmaapService.getPolicyMsg($root, $child, \"org.onap.holmes.droolsRule\");\n "service-instance-name": "some name 3",
                  "environment-context": "some context 3",
                 dmaapService.publishPolicyMsg(policyMsg, \"unauthenticated.DCAE_CL_OUTPUT\");\n\t\t$root.setRootFlag(1);\n\t\tupdate($root);\nend\n\nrule \"root_no_child_handle_Rule\"\nsalience 100\nno-loop true\n    when\n"workload-context": "some workload 3",
                 $root "relationship-list": {
 VesAlarm(alarmIsCleared == 0, rootFlag == 0,\n            sourceId != null && !sourceId.equals(\"\"),\n\t\t\tsourceName != null && !sourceName.equals(\"\"),\n"relationship" : [
                      ]
  specificProblem in (\"Fault_SOTN_Service_Failure\"))\n        then\n\t\tDmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);\n\t\tPolicyMsg policyMsg = dmaapService.getPolicyMsg($root, null, \"org.onap.holmes.droolsRule\");\n }
        dmaapService.publishPolicyMsg(policyMsg, \"unauthenticated.DCAE_CL_OUTPUT\");\n\t\t$root.setRootFlag(1);\n\t\tupdate($root);\nend\n\nrule \"root_cleared_handle_Rule\"\nsalience 100\nno-loop true\n    when\n}
       $root : VesAlarm(alarmIsCleared == 1, rootFlag == 1)\n ]
   then\n\t\tDmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);\n\t\tPolicyMsg policyMsg = dmaapService.getPolicyMsg($root, null, \"org.onap.holmes.droolsRule\");\n },
        dmaapService.publishPolicyMsg(policyMsg, \"unauthenticated.DCAE_CL_OUTPUT\");\n\t\tretract($root);\nend\n\nrule \"child_handle_Rule\"\nsalience 100\nno-loop true\n"relationship-list": {
      when\n        $child"relationship" : VesAlarm(alarmIsCleared == 1, rootFlag == 0)\n    then\n\t\tretract($child);\nend",
 
"enabled": 1
 
}

To illustrate, the content field in the above rule is presented as readable format in the following. We need to convert it to valid json string when uploading to Holmes.

Code Block
languagetext
titleHolmes Rule Content
collapsetrue
package org.onap.holmes.droolsRule;
 
 
import org.onap.holmes.common.dmaap.DmaapService;
import org.onap.holmes.common.api.stat.VesAlarm;
import org.onap.holmes.common.aai.CorrelationUtil;
import org.onap.holmes.common.dmaap.entity.PolicyMsg;
import org.onap.holmes.common.dropwizard.ioc.utils.ServiceLocatorHolder;
import org.onap.holmes.common.utils.DroolsLog;
 
 
rule "Relation_analysis_Rule"
salience 200
no-loop true
    when
        $root : VesAlarm(alarmIsCleared == 0,
      [
              ]
          }
        }
      }
    ]
}


For each
item in results: -   Get item.service-subscription.service-instances
	-   For each data in service-instances:
	-   Get service-instance object
 

Alarm Correlation

Code Block
languagetext
titleGet Logic-link from TP
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/pnfs/pnf/{pnfName}/p-interfaces?interface-name={ifName}&operational-status={status}
Method: GET
Resquest Body:
{
}


Response Body:
{    
	"results" : [
		{
      $sourceId: sourceId, sourceId != null && !sourceId.equals(""), "p-interface" : {
              $sourceName: sourceName, sourceName != null && !sourceName.equals(""),"interface-name":{ifName}",                  
 $startEpochMicrosec: startEpochMicrosec			 "network-ref": "some ref",
            specificProblem in"transparent": ("Fault_SOTN_Service_Failure"),"some blue",
             $eventId: eventId)"operational-status":"{status}",
         $child : VesAlarm( eventId != $eventId, parentId == null "speed-value" : "some speed",
            specificProblem in ("Fault_SOTN_Service_Failure"),"relationship-list":
            startEpochMicrosec < $startEpochMicrosec + 60000 && startEpochMicrosec > $startEpochMicrosec - 60000 )"relationship" : [
         then         $child.setParentId($root.getEventId());  {
      update($child);
end
 
  rule "root_has_child_handle_Rule"
salience 150
no-loop true     when         $root"related-to" : VesAlarm(alarmIsCleared == 0, rootFlag == 0, $eventId: eventId) "logic-link",
                 $child : VesAlarm(eventId != $eventId, parentId == $eventId)
 "related-link" :'url of logical-link",
   then         DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);       "relationship-data":[
 PolicyMsg policyMsg = dmaapService.getPolicyMsg($root, $child, "org.onap.holmes.droolsRule");         dmaapService.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");           $root.setRootFlag(1);"relationship-key" : "logical-link.link.name",
        update($root); end     rule "root_no_child_handle_Rule" salience 100 no-loop true     when  "relationship-value"; "some name"
    $root : VesAlarm(alarmIsCleared == 0, rootFlag == 0,           ]
 sourceId != null && !sourceId.equals(""),             sourceName != null}
&& !sourceName.equals(""),             specificProblem]
in ("Fault_SOTN_Service_Failure"))          then } 
    ]
 DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);
        PolicyMsg policyMsg = dmaapService.getPolicyMsg($root, null, "org.onap.holmes.droolsRule");
        dmaapService.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");
        $root.setRootFlag(1);
        update($root);
nend
 
 
rule "root_cleared_handle_Rule"
salience 100
no-loop true
    when
        $root : VesAlarm(alarmIsCleared == 1, rootFlag == 1)
    then
        DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);
        PolicyMsg policyMsg = dmaapService.getPolicyMsg($root, null, "org.onap.holmes.droolsRule");
}

Look up for 'input-parameters' by 'service-instance-id'

Code Block
languagetext
titleQuery service instances for CCVPN
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/business/customers/customer/{global-custoner-id}/service-subscriptions/service-subscription/{service-type}/service-instances?service-instance-id={serviceId}
Method: GET
Request Body:
{
}
Response Body:
{
	"service-instance-id": "{service-instance-id}",
    "service-instance-name" : "instance name",
	"service-type": "some type",
	"service-role": "some role",
	"model-invariant-id": "model id",
	"model-version-id": "model version",
	"input-parameters:"request parameters",  // ... This is the service instance recreation input looked up by CL.
	"resource-version": "some version"
}


Example of response body:
{
	"service-instance-id": "176d9eba-1662-4289-8396-0097b50fd485",
	"service-type": "E2E Service",
	"service-role": "E2E Service",
	"model-invariant-id": "c22a9483-d2b6-49cc-b1f7-ef34c93572a1",
	"model-version-id": "71d0e396-e246-4c23-aa57-6da2043d6209",
	"input-parameters:".....;",             // ... This is the service instance recreation input looked up by CL.
	"resource-version": "1528975017336"
	"relationship-list": {
    	 "relationship": [
       dmaapService.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");  	{
      retract($root); end   	"related-to": "pnf",
rule "child_handle_Rule" salience 100 no-loop true     when
	"related-link": "/aai/v11/network/pnfs/pnf/MME-0001",
       $child : VesAlarm(alarmIsCleared == 1, rootFlag == 0)
    then 	"relationship-data": [
    				{     
      retract($child); end

Rule Execution

After the correlation is done successfully,  there should be a corresponding control loop event defined in the following section published on the unauthenticated.DCAE_CL_OUTPUT topic of DMaaP.

POLICY

Policy Creation

Code Block
languagetext
titleOperational Policy
collapsetrue
controlLoop:   version: 2.0.0   controlLoopName: ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55b   trigger_policy: unique-policy-id-16-deleteE2EService	"relationship-key": "pnf.pnf-id",   timeout: 3600   abatement:
false   policies:   - id: unique-policy-id-16-deleteE2EService     name: Delete E2E Service
 	"relationship-value": "176d9eba-1662-4289-8396-0097b50fd466"
   description: 				}
   actor: SO 			],
    recipe: DeleteE2EService     target	"related-to-property": [
					{
					"property-key": "pnf.pnf-name",   type: VM   
 retry: 3					"property-value": "MME-0001"
    timeout: 1200				}
    			]
success: unique-policy-id-17-createE2EService
 			}  
 failure: final_failure
    failure_timeout: final_failure_timeout
    failure_retries: final_failure_retries
    failure_exception: final_failure_exception
    failure_guard: final_failure_guard


  - id: unique-policy-id-17-createE2EService
    name: Create E2E Service
    description:
    actor: SO
    recipe: CreateE2EService
    target:
      type: VM
    retry: 3
    timeout: 1200
    success: final_success
    failure: final_failure
    failure_timeout: final_failure_timeout
    failure_retries: final_failure_retries
    failure_exception: final_failure_exception
    failure_guard: final_failure_guard
  
Code Block
languagetext
titleDCAE Control Loop Event (Holmes)
collapsetrue
{
    "closedLoopEventClient": "DCAE.HolmesInstance",
    "policyVersion": "1.0.0.5",
    "policyName": "CCVPN",
    "policyScope": "service=SOTNService,type=SampleType,closedLoopControlName=CL-CCVPN-d925ed73-8231-4d02-9545-db4e101f88f8",
    "target_type": "VM",
    "AAI": {		]
	}
}

Others

Code Block
languagetext
titleQuery for Logical-links
collapsetrue
URL: https://<AAI host>:<AAI port>/aai/v14/network/logical-links?link-name={linkName}&operational-status={status}
Method: GET
{
}

Response Body:
{
"results": [
    "logic-links" : {
      "link-name" : "{linkName}",
      "operational-status": "{status}",
      "model-invariant-id": "some invariant",
      "model-version-id"  : "some version",
      "link-id":"some id",
      "relationship-list"  : [
            {
            "relationship" : [
                {
                     "service-instance.service-instance-id" related-to": "TBDp-interface",
    },     "closedLoopAlarmStart": 1484677482204798,     "closedLoopEventStatus": "ONSET",     "closedLoopControlNamerelated-link": "ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55burl of p-interface 1",
    "version": "1.0.2",           "target": "vserver.vserver-name",     "requestIDrelationship-data": "97964e10-686e-4790-8c45-bdfa61df770f",[
         "from": "DCAE"
}

Policy Engine subscribes the unauthenticated.DCAE_CL_OUTPUT on DMAAP. 

AAI Enrichment APIs

DCAE VES event  A&AI enrichment for previous use cases are defined here as reference.  The following describe those supporting CCVPN Closed Loop, 

Code Block
languagetext
titleQuery for Logical-links
collapsetrue


URL: https://<AAI host>:<AAI port>/aai/v14/network/logical-links?link-name={linkName}&operational-status={status}
Method: GET
{
}


Response Body:
{
"results": [
    "logic-links" : {                "relationship-key" : "p-interface.interface-name",
                          "relationship-value" : "some name 1"
                      ]
      "link-name" : "{linkName}",       "operational-status": "{status}",
      "model-invariant-id": "some invariant",     ],  "model-version-id"
 : "some version",       "link-id":"some id", },
        "relationship-list"  : [{
            "relationship" : [
                {
                     "related-to": "p-interface",
                     "related-link": "url of p-interface 12",
                     "relationship-data":[
                          "relationship-key" : "p-interface.interface-name",
                          "relationship-value" : "some name 12"
                      ]
                }
               ],  
            }    
      ]
 }