The current API for creating and subsequently retrieving decisions surrounding DCAE mS configuration policies has many problems and limitations. We are capturing these limitations here so that they can be addressed in Dublin for the new Policy Lifecycle API.
Casablanca DCAE mS Policy Model
tosca_definitions_version: tosca_simple_yaml_1_0_0 data_types: policy.data.metricsPerEventName: properties: controlLoopSchemaType: type: string description: Specifies Control Loop Schema Type for the event Name e.g. VNF, VM constraints: - valid_values: - VM - VNF eventName: type: string description: Event name to which thresholds need to be applied policyName: type: string description: TCA Policy Scope Name policyScope: type: string description: TCA Policy Scope policyVersion: type: string description: TCA Policy Scope Version thresholds: type: list description: Thresholds associated with eventName entry_schema: type: policy.data.thresholds policy.data.tca_policy: properties: domain: type: string description: Domain name to which TCA needs to be applied constraints: - equal: measurementsForVfScaling metricsPerEventName: type: list description: Contains eventName and threshold details that need to be applied to given eventName entry_schema: type: policy.data.metricsPerEventName policy.data.thresholds: properties: closedLoopControlName: type: string description: Closed Loop Control Name associated with the threshold closedLoopEventStatus: type: string description: Closed Loop Event Status of the threshold constraints: - valid_values: - ONSET - ABATED direction: type: string description: Direction of the threshold constraints: - valid_values: - LESS - LESS_OR_EQUAL - GREATER - GREATER_OR_EQUAL - EQUAL fieldPath: type: string description: Json field Path as per CEF message which needs to be analyzed for TCA severity: type: string description: Threshold Event Severity constraints: - valid_values: - CRITICAL - MAJOR - MINOR - WARNING - NORMAL thresholdValue: type: integer description: Threshold value for the field Path inside CEF message version: type: string description: Version number associated with the threshold node_types: policy.nodes.Root: derived_from: tosca.nodes.Root properties: policyDescription: required: false type: string policyName: required: true type: string policyScope: required: true type: string policyVersion: required: true type: string policy.nodes.tca: derived_from: policy.nodes.Root properties: tca_policy: type: map description: TCA Policy JSON entry_schema: type: policy.data.tca_policy
Example Policy Data You Would Expect To Generate
{ "domain": "measurementsForVfScaling", "metricsPerEventName": [ { "eventName": "Mfvs_eNodeB_RANKPI", "controlLoopSchemaType": "VNF", "policyScope": "resource=vFirewall;type=configuration", "policyName": "configuration.dcae.microservice.tca.xml", "policyVersion": "v0.0.1", "thresholds": [ { "closedLoopControlName": "CL-FRWL-LOW-TRAFFIC-SIG-d925ed73-8231-4d02-9545-db4e101f88f8", "closedLoopEventStatus": "ONSET", "version": "1.0.2", "fieldPath": "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated", "thresholdValue": 4000, "direction": "LESS_OR_EQUAL", "severity": "MAJOR" }, { "closedLoopControlName": "CL-FRWL-HIGH-TRAFFIC-SIG-EA36FE84-9342-5E13-A656-EC5F21309A09", "closedLoopEventStatus": "ONSET", "version": "1.0.2", "fieldPath": "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated", "thresholdValue": 20000, "direction": "GREATER_OR_EQUAL", "severity": "CRITICAL" }, { "closedLoopControlName": "CL-FRWL-HIGH-TRAFFIC-SIG-EA36FE84-9342-5E13-A656-EC5F21309A09", "closedLoopEventStatus": "ABATED", "version": "1.0.2", "fieldPath": "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated", "thresholdValue": 0, "direction": "EQUAL", "severity": "CRITICAL" } ] }, { "eventName": "vLoadBalancer", "controlLoopSchemaType": "VNF", "policyScope": "resource=vLoadBalancer;type=configuration", "policyName": "configuration.dcae.microservice.tca.xml", "policyVersion": "v0.0.1", "thresholds": [ { "closedLoopControlName": "CL-LBAL-LOW-TRAFFIC-SIG-FB480F95-A453-6F24-B767-FD703241AB1A", "closedLoopEventStatus": "ONSET", "version": "1.0.2", "fieldPath": "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated", "thresholdValue": 500, "direction": "LESS_OR_EQUAL", "severity": "MAJOR" }, { "closedLoopControlName": "CL-LBAL-LOW-TRAFFIC-SIG-0C5920A6-B564-8035-C878-0E814352BC2B", "closedLoopEventStatus": "ONSET", "version": "1.0.2", "fieldPath": "$.event.measurementsForVfScalingFields.vNicPerformanceArray[*].receivedBroadcastPacketsAccumulated", "thresholdValue": 5000, "direction": "GREATER_OR_EQUAL", "severity": "CRITICAL" } ] } ] }