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Table of Contents

outline	true

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CCVPN Closed Loop Diagram

SDC/CLAMP Portal design and activate policy.
SDC/CLAMP config and activate the policy.
SDC/CLAMP distribute the DCAE config.
SDC/CLMAP distribute the alarm correlation rules to Holmes.
3rd party SOTN controller report link down alarm to DCAE
DCAE will do data cleaning and filtering for the alarms
DCAEk keep track the datas.
Holmes do analysis for the alarms.
Holmes notify the reroute event.
Policy matching the reroute rules.
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

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Collector on demand per control loop instance
Or, common APIs of collector for updating collector at run time per control loop instantiation
One instance of Holmes engine per control loop
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:

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

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}

Establish

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Persistent Connection

Functionality

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

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}

Restconf Notification

This is the 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

language	text
title	Service Down Alarm
collapse	true

  
  "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": "down",
                      "inter-domain-plug-id": "51000"
                    },
                    "ietf-te-topology:te-tp-id": "11234",
                    "tp-id": "1234"
                  }
                ]
              }
            }
          ]
        }
      }
    }
  }

Route Alarm Message

Restconf collector adds one attribute, "notify_oid", to the above JSON data, and publishes it to DMAAP topic RESTCONF_ALARM_TOPIC. This added attribute is used by Universal VES Adapter (Mapper) to identify that this JSON data is from Restconf.

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Code Block

language	text
title	Restconf Collector Output (JSON)
collapse	true

{
  "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=1234",
              "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": "down",
                      "inter-domain-plug-id": "51000"
                    },
                    "ietf-te-topology:te-tp-id": "11234",
                    "tp-id": "1234"
                  }
                ]
              }
            }
          ]
        }
      }
    }
  }
}

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

language	text
title	Restconf2VES.xml
collapse	true

#... for illustration, not a working version
 
           “varbinds:”:  [{
                 “name”:  “network-ref”,
                 “value”:  “$network-ref”
                  },
                  {
                  “name” : “node-ref",
                  “value”:  “$node-ref”
                  },
                  {
                  “name”: “tp-ref”,
                  “value”:“$tp-ef”,
                  },
                  {
                  “name”:  “te-tp-id”,
                  “value”:  “$te-tp-id”
                  },                   
                  {
                  “name”:  “tp-id”,
                  “value”:  “$tp-id”
                  },
                  {
                  “name”:  “inter-domain-plug-id”,
                  “value”:  “$inter-domain-plug-id”
                  }
           ]
      }

...

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

language	text
title	Route Status Alarm (VES/CEDM)
collapse	true

{
    "event": {
        "commonEventHeader": {
            "sourceId": "example-target", // 'target' from the restconf notification.
            "startEpochMicrosec": 1413378172000000,
            "eventId": "ab305d54-85b4-a31b-7db2-fb6b977766",
            "sequence": 0,
            "domain": "fault",
            "lastEpochMicrosec": 1413378172000033,
            "eventName": "Fault_Route_Status",
            "sourceName": "example-target", // 'Target' from the restconf notification.
            "priority": "High",
            "version": 3.0,
            "reportingEntityName": "Domain_Contorller"
        },
        "faultFields": {
            "eventSeverity": "CRITICAL",
            "alarmCondition": "Route_Status",
            "faultFieldsVersion": 2.0,
            "specificProblem": "Fault_SOTN_Service_Status",
            "alarmAdditionalInformation": [
                {
                "name": "providerIdnetworkId",                    
                "value": "5555providerId%2F5555%2FclientId%2F6666%2FtopologyId%2F100"               
                },
                {
                "name": "clientIdnode",                    
                "value": "6666example-node"                
                },               
                {
                "name": "topologyIdtp-id",                    
                "value": "111234"               
                },
                {
                "name": "nodeoper-status",           
                         "value": "example-nodedown"  
                              },
            ]
              "eventSourceType": "other",
   {                 "name"vfStatus": "tp-idActive",
        }
          }
}

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

language	text
title	Restconf.yaml.template
collapse	true

version: '2.1'
services:
   restconfcollector:
            "value"image: "1234restconfcollector"
      container_name: "restconf_collector"
      restart: "always"
      hostname: "restconf-collector"
   labels:
   },    -             {
        "SERVICE_NAME=restconf_collector"

Blueprint for Holmes Rule Manager

Code Block

language	text
title	Holmes-rules.yaml.template
collapse	true

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

language	js
title	Holmes Rule
collapse	true

{
       "namecontent": "oper-status",
                "value": "down"
                }
            ]
            "eventSourceType": "other",
            "vfStatus": "Active"
        }
    }
}

...

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

Blueprint for Restconf Collector

...

language	text
title	Restconf.yaml.template
collapse	true

Blueprint for Holmes Rule Manager

...

language	text
title	Holmes-rules.yaml.template
collapse	true

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

language	text
title	Holmes Rule
collapse	true

{
 
"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            $sourceId: sourceId, sourceId != null && !sourceId.equals(\"\"),\n\t\t\t$sourceName: sourceName, sourceName != null && !sourceName.equals(\"\"),\n\t\t\t$startEpochMicrosec: startEpochMicrosec,\n            specificProblem in (\"Fault_SOTN_Service_Failure\"),\n            $eventId: eventId)\n        $child : VesAlarm( eventId != $eventId, parentId == null,\n            specificProblem in (\"Fault_SOTN_Service_Failure\"),\n            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, $child, \"org.onap.holmes.droolsRule\");\n        dmaapService.publishPolicyMsg(policyMsg, \"unauthenticated.DCAE_CL_OUTPUT\");\n\t\t$root.setRootFlag(1);\n\t\tupdate($root);\nend\n\nrule \"root_no_child_handle_Rule\"\nsalience 100\nno-loop true\n    when\n        $root : VesAlarm(alarmIsCleared == 0, rootFlag == 0,\n            sourceId != null && !sourceId.equals(\"\"),\n\t\t\tsourceName != null && !sourceName.equals(\"\"),\n            specificProblem in (\"Fault_SOTN_Service_Failure\"))\n    then\n\t\tDmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);\n\t\tPolicyMsg policyMsg = dmaapService.getPolicyMsg($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    when\n        $child : VesAlarm(alarmIsCleared == 1, rootFlag == 0)\n    then\n\t\tretract($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

language	text
title	Holmes Rule Content
collapse	true

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,
            $sourceId: sourceId, sourceId != null && !sourceId.equals(""),
            $sourceName: sourceName, sourceName != null && !sourceName.equals(""),
            $startEpochMicrosec: startEpochMicrosec,
            specificProblem in ("Fault_SOTN_Service_Failure"),
            $eventId: eventId)
        $child : VesAlarm( eventId != $eventId, parentId == null,
            specificProblem in ("Fault_SOTN_Service_Failure"),
            startEpochMicrosec < $startEpochMicrosec + 60000 && startEpochMicrosec > $startEpochMicrosec - 60000 )
    then
        $child.setParentId($root.getEventId());
        update($child);
end
 
 
rule "root_has_child_handle_Rule"
salience 150
no-loop true
    when
        $root : VesAlarm(alarmIsCleared == 0, rootFlag == 0, $eventId: eventId)
        $child : VesAlarm(eventId != $eventId, parentId == $eventId)
    then
        DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);
        PolicyMsg policyMsg = dmaapService.getPolicyMsg($root, $child, "org.onap.holmes.droolsRule");
        dmaapService.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");
        $root.setRootFlag(1);
        update($root);
end
 
 
rule "root_no_child_handle_Rule"
salience 100
no-loop true
    when
        $root : VesAlarm(alarmIsCleared == 0, rootFlag == 0,
            sourceId != null && !sourceId.equals(""),
            sourceName != null && !sourceName.equals(""),
            specificProblem in ("Fault_SOTN_Service_Failure"))
    then
        DmaapService dmaapService = ServiceLocatorHolder.getLocator().getService(DmaapService.class);
        PolicyMsg policyMsg = dmaapService.getPolicyMsg($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");
        dmaapService.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");
        retract($root);
end
 
 
rule "child_handle_Rule"
salience 100
no-loop true
    when
        $child : VesAlarm(alarmIsCleared == 1, rootFlag == 0)
    then
        retract($child);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

language	java
title	Holmes Rule Content
collapse	true

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

language	text
title	Operational Policy - Yaml
collapse	true

controlLoop:
  version: 2.0.0
  controlLoopName: ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55ba8c24c70c66b
  trigger_policy: unique-policy-id-16-receateE2EServiceReroute
  timeout: 3600
  abatement: false
  
policies:
  - id: unique-policy-id-16-recreateE2EServiceReroute
    name: RecreateConnectivity E2EReroute
Service     description:
    actor: SOSDNC
    recipe: Recreate_E2E_ServiceReroute
    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
  
    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

language	text
title	DCAE Control Loop Event (Holmes)
collapse	true

{
    "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-instanceinformation.service-instance-id" : "service-instance-id-example-1",
        "network-information. network-id " : "id"
    },
    "closedLoopAlarmStart": 1484677482204798,
    "closedLoopEventStatus": "ONSET",
    "closedLoopControlName": "ControlLoop-CCVPN-2179b738-fd36-4843-a71a-a8c24c70c55ba8c24c70c66b",
    "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 following APIs are used to support the above looking up.

Status Update

Code Block

language	text
title	Update TP Status
collapse	true

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

language	text
title	Update Logic-link Status
collapse	true

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

language	text
title	Get vpn-binding from TP
collapse	true

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

language	text
title	Get all 3 services instances from CCVPN
collapse	true

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": {
                      "relationship" : [
                      ]
                  }
                },
                {
                  "service-instance-id": "some id 3",
                  "service-instance-name": "some name 3",
                  "environment-context": "some context 3",
                  "workload-context": "some workload 3",
                  "relationship-list": {
                      "relationship" : [
                      ]
                  }
                }
              ]
          },
          "relationship-list": {
              "relationship" : [
              ]
          }
        }
      }
    ]
}


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

language	text
title	Get Logic-link from TP
collapse	true

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" : [
		{
        "p-interface" : {
             "interface-name":{ifName}",                  
			 "network-ref": "some ref",
             "transparent": "some blue",
             "operational-status":"some speed{status}",
             "speed-value" : "some speed",
             "relationship-list":
                "relationship" : [
                    {
                      "related-to" : "logic-link",
                      "related-link" :'url of logical-link",
                      "relationship-data":[
                          "relationship-key" : "logical-link.link.name",
                          "relationship-value"; "some name"
                      ]
                    }
              ]
           } 
    ]
}

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

Code Block

language	text
title	Query service instances for CCVPN
collapse	true

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": [
          	{
          	"related-to": "pnf",
          	"related-link": "/aai/v11/network/pnfs/pnf/MME-0001",
          	"relationship-data": [
    				{     
                	"relationship-key": "pnf.pnf-id",       
                	"relationship-value": "176d9eba-1662-4289-8396-0097b50fd466"
    				}
    			],
          	"related-to-property": [
					{
					"property-key": "pnf.pnf-name",       
					"property-value": "MME-0001"
    				}
    			]
  			}  
		]
	}
}

Others

Code Block

language	text
title	Query for Logical-links
collapse	true

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" : [
                {
                     "related-to": "p-interface",
                     "related-link": "url of p-interface 1",
                     "relationship-data":[
                          "relationship-key" : "p-interface.interface-name",
                          "relationship-value" : "some name 1"
                      ]
                }
             ],  
           },
           {
            "relationship" : [
                {
                     "related-to": "p-interface",
                     "related-link": "url of p-interface 2",
                     "relationship-data":[
                          "relationship-key" : "p-interface.interface-name",
                          "relationship-value" : "some name 2"
                      ]
                }
               ],  
            }    
      ]
 }

Versions Compared

Old Version 66

New Version Current

Key

CCVPN Closed Loop Diagram

CLAMP

DCAE

DCAE Diagram

APIs to SOTN Controller (Restconf)

Subscribe Notification

Establish

Persistent Connection

Restconf Notification

Route Alarm Message

Universal VES Adapter (Mapper)

Mapping XML Restconf2VES.xml

VES Event

DCAE Blueprints

Blueprint for Restconf Collector

Blueprint for Holmes Rule Manager

HOLMES (WIP)

Rule Creation

Blueprint for Restconf Collector

Blueprint for Holmes Rule Manager

HOLMES (WIP)

Rule Creation

Rule Execution

POLICY

Policy Creation

AAI Enrichment APIs

Status Update

Service Instance ID Look Up

Alarm Correlation

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

Others