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package org.onap.holmes.droolsRuleccvpn;

dialect "java"

import org.onap.holmes.common.api.dmaapstat.DmaapServiceVesAlarm;
import org.onap.holmes.common.api.stat.VesAlarmAlarmAdditionalField;
import org.onap.holmes.common.aai.CorrelationUtil.AaiQuery4Ccvpn;
import org.onap.holmes.common.exception.CorrelationException;
import org.onap.holmes.common.dmaap.entity.PolicyMsg;
import org.onap.holmes.common.dropwizard.ioc.dmaap.DmaapService;
import org.onap.holmes.common.utils.ServiceLocatorHolderDroolsLog;
import org.onap.holmes.common.dropwizard.ioc.utils.DroolsLogServiceLocatorHolder;

import com.alibaba.fastjson.JSONArray;

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
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"),
		getAdditionalField(alarm, "oper-status")
	);
}

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 updateAaiStatus(String networkId, String pnfName, String ifName,
		String linkName, String status) {
	AaiQuery4Ccvpn aai = AaiQuery4Ccvpn.newInstance();
	Map<String, Object> body = new HashMap<String, Object>(){
		{
			put("operational-status", status);
		}
	};
	aai.updateLogicLinkStatus(linkName, body);
	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 sb = new StringBuilder();
	for(int i = 0; i < instances.size(); ++i) {
		JSONObject o = instances.getJSONObject(i);
		String name = o.getString("service-instance-name");
		ret.put(name + ".input-parameters", o.getString("input-parameters"));
		sb.append(name).append(",");
	}
	ret.put("service-instance.service-instance-name", sb.substring(0, sb.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
		$a: VesAlarm(eventName.indexOf("Fault_Route_Status") != -1)
	then
	updateAaiStatus (
		getAdditionalField($a, "networkId"),
		getAdditionalField($a, "node"),
		getAdditionalField($a, "tp-id"),
		getLogicLink($a),
		getAdditionalField($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 - $start) < 60000)
	then
	    if (isCorrelated($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);
   		     PolicyMsg policyMsg = dmaapService.getPolicyMsg($root, nullpublishPolicyMsg(msg, "org.onap.holmes.droolsRuleunauthenticated.DCAE_CL_OUTPUT");
	    	}
	        dmaapService$a.publishPolicyMsg(policyMsg, "unauthenticated.DCAE_CL_OUTPUT");
setRootFlag(1);
	        $b.setRootFlag(1);
	        update($a);
	        retractupdate($root$b);
end
 
 
rule "child_handle_Rule"
salience 100
no-loop true
    when
        $child : VesAlarm(alarmIsCleared == 1, rootFlag == 0)
    then
        retract($child
	    }
end

rule "Clear Alarms"
	no-loop true
	salience 100
	when
		$a: VesAlarm(alarmIsCleared == 1, eventName.indexOf("Fault_Route_Status") != -1)
	then
		if (DmaapService.alarmUniqueRequestID.containsKey($a.getEventId())) {
			DmaapService.alarmUniqueRequestID.remove($a.getEventId());
		}

		//TODO: send alarm clearing message to Policy - for now it's not needed.
        //...

		retract($a);
end