Add support to consume, process pm message from DB

- Add support for analysing pm data
- Add support to trigger closed loop
- Add support for configDb Interface Implementation
- Add support for Intelligent slicing

Issue-ID: DCAEGEN2-2255
Signed-off-by: dhebeha <dhebeha.mj71@wipro.com>
Change-Id: I185dbb6da45ae6ee74f0a090e2d604914163588b

9 files changed, 868 insertions, 0 deletions

diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/AverageCalculator.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/AverageCalculator.java
new file mode 100644
index 00000000..a003e9c0
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/AverageCalculator.java
@@ -0,0 +1,94 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.annotation.PostConstruct;
+
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+/** 
+ * This class has utility methods for calculating the average of samples
+ */
+@Component
+public class AverageCalculator {
+	private static Logger log = LoggerFactory.getLogger(AverageCalculator.class);
+	private List<String> pmNames;
+
+	@PostConstruct
+	public void init() {
+		pmNames = new ArrayList<>();
+		pmNames.add("PrbUsedDl");
+		pmNames.add("PrbUsedUl");
+	}
+
+	/**
+	 * Find average of samples
+	 */
+	public List<MeasurementObject> findAverageOfSamples(List<List<MeasurementObject>> samples) {
+		int numOfSamples = samples.size();
+		List<MeasurementObject> result = new ArrayList<>();
+		samples.forEach(sample -> 
+		sample.forEach(cellMeasObj -> {
+			int index = result.indexOf(cellMeasObj);
+			if(index != -1) {
+				result.set(index, findSum(result.get(index), cellMeasObj));
+			}
+			else { 
+				result.add(cellMeasObj);
+			}
+		})
+				);
+		return findAvg(result, numOfSamples);
+	}
+
+	/**
+	 * Calculate the sum
+	 */
+	public MeasurementObject findSum(MeasurementObject existing, MeasurementObject current) {
+		pmNames.forEach(pmName -> {
+			int newValue = current.getPmData().get(pmName) + existing.getPmData().get(pmName);
+			existing.getPmData().put(pmName, newValue);
+		});
+		return existing;
+	}
+
+	/**
+	 * Calculate the average
+	 */
+	public List<MeasurementObject> findAvg(List<MeasurementObject> result, int numOfSamples) {
+		result.forEach(cellMeasObj ->
+		pmNames.forEach(pmName -> {
+			int value = (cellMeasObj.getPmData().get(pmName))/numOfSamples;
+			cellMeasObj.getPmData().put(pmName, value);
+		})
+				);
+		log.debug("Average of measurement data samples {}",result);
+		return result;
+	}
+}
+
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ConsumerThread.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ConsumerThread.java
new file mode 100644
index 00000000..39235cd5
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/ConsumerThread.java
@@ -0,0 +1,72 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import org.onap.slice.analysis.ms.configdb.IConfigDbService;
+import org.onap.slice.analysis.ms.models.Configuration;
+import org.onap.slice.analysis.ms.utils.BeanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/** 
+ * This Thread class consumes message from pm data queue and sends onset message to policy
+ */
+public class ConsumerThread extends Thread {
+	private static Logger log = LoggerFactory.getLogger(PmThread.class);
+	private PmDataQueue pmDataQueue;
+	private IConfigDbService configDbService;
+	private SnssaiSamplesProcessor snssaiSamplesProcessor;
+	private long initialDelaySec; 
+
+	/**
+	 * Default constructor.
+	 */
+	public ConsumerThread() {
+		super();
+		this.pmDataQueue = BeanUtil.getBean(PmDataQueue.class);
+		this.configDbService = BeanUtil.getBean(IConfigDbService.class);
+		this.snssaiSamplesProcessor = BeanUtil.getBean(SnssaiSamplesProcessor.class);
+		this.initialDelaySec = Configuration.getInstance().getInitialDelaySeconds();
+	}
+
+	/**
+	 * Consumes data from PM data queue, process the data and sends onset message to policy if needed
+	 */
+	@Override
+	public void run() {    
+		boolean done = false;
+		String snssai = "";
+		while (!done) {
+			try {
+				Thread.sleep(initialDelaySec);
+				snssai = pmDataQueue.getSnnsaiFromQueue();
+				if (!snssai.equals("")) {
+					log.info("Consumer thread started for s-nssai {}",snssai);    
+					snssaiSamplesProcessor.processSamplesOfSnnsai(snssai, configDbService.fetchNetworkFunctionsOfSnssai(snssai));
+				}
+			} catch (Exception e) {
+				log.error("Exception in Consumer Thread ", e);
+				done = true;
+			}
+		}
+	}
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/IPmEventProcessor.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/IPmEventProcessor.java
new file mode 100644
index 00000000..0a67df81
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/IPmEventProcessor.java
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.List;
+import java.util.Map;
+
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.onap.slice.analysis.ms.models.pmnotification.Event;
+
+/** 
+ * Interface for pm event processor
+ */
+public interface IPmEventProcessor {
+	public Map<String, List<MeasurementObject>> processEvent(Event event);
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/MLMessageProcessor.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/MLMessageProcessor.java
new file mode 100644
index 00000000..bee7b30e
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/MLMessageProcessor.java
@@ -0,0 +1,73 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.PostConstruct;
+
+import org.onap.slice.analysis.ms.configdb.IConfigDbService;
+import org.onap.slice.analysis.ms.models.CUModel;
+import org.onap.slice.analysis.ms.models.MLOutputModel;
+import org.onap.slice.analysis.ms.models.policy.AdditionalProperties;
+import org.onap.slice.analysis.ms.utils.BeanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+/**
+ * Process the message sent by ML service and sends notification to policy
+ */
+@Component
+@Scope("Prototype")
+public class MLMessageProcessor {
+	private static Logger log = LoggerFactory.getLogger(MLMessageProcessor.class);
+
+	private IConfigDbService configDbService;
+	private PolicyService policyService;
+
+
+	@PostConstruct
+	public void init() {
+		configDbService = BeanUtil.getBean(IConfigDbService.class);
+	}
+	
+	public void processMLMsg(MLOutputModel mlOutputMsg) {
+		String snssai = mlOutputMsg.getSnssai();
+		List<CUModel> cuData = mlOutputMsg.getData();
+		Map<String, List<String>>  ricToCellMapping = configDbService.fetchRICsOfSnssai(snssai);
+		log.debug("RIC to cell mapping of S-NSSAI {} is {}",snssai,ricToCellMapping);
+		for(CUModel cuModel: cuData) {
+			String cellId = String.valueOf(cuModel.getCellCUList().get(0).getCellLocalId());
+			ricToCellMapping.forEach((ricId, cells) -> {
+				if(cells.contains(cellId)) {
+					cuModel.setNearRTRICId(ricId);
+				}
+			});
+		}
+		AdditionalProperties<MLOutputModel> addProps = new AdditionalProperties<>();
+		addProps.setResourceConfig(mlOutputMsg);
+		policyService.sendOnsetMessageToPolicy(snssai, addProps, configDbService.fetchServiceDetails(snssai));	
+	}
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmDataQueue.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmDataQueue.java
new file mode 100644
index 00000000..d907bfed
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmDataQueue.java
@@ -0,0 +1,96 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Queue;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.onap.slice.analysis.ms.models.SubCounter;
+import org.springframework.stereotype.Component;
+
+/** 
+ * This class represents the data structure for storing the pm events 
+ */
+@Component
+public class PmDataQueue {
+	private Map<SubCounter, Queue<List<MeasurementObject>>> subCounterMap = Collections.synchronizedMap(new LinkedHashMap<SubCounter, Queue<List<MeasurementObject>>>());
+	private Queue<String> snssaiList = new LinkedBlockingQueue<>();
+
+	/**
+	 * put the measurement data for (an S-NSSAI from a network function) in the queue
+	 */
+	public void putDataToQueue(SubCounter subCounter, List<MeasurementObject> measurementObjectData) {
+		Queue<List<MeasurementObject>> measQueue;
+		if (subCounterMap.containsKey(subCounter)){
+			subCounterMap.get(subCounter).add(measurementObjectData);
+		}
+		else {
+			measQueue = new LinkedBlockingQueue<>();
+			measQueue.add(measurementObjectData);
+			subCounterMap.put(subCounter, measQueue);
+		}
+	}
+
+	/**
+	 * get the measurement data for (an S-NSSAI from a network function) from the queue
+	 * returns the specified number of samples
+	 */
+	public List<List<MeasurementObject>> getSamplesFromQueue(SubCounter subCounter, int samples) {
+		List<List<MeasurementObject>> sampleList = new LinkedList<>();
+		if (subCounterMap.containsKey(subCounter)){
+			Queue<List<MeasurementObject>> measQueue = subCounterMap.get(subCounter);
+			while(samples > 0) {
+				sampleList.add(measQueue.remove());
+				samples --;
+			}
+		}
+		return sampleList;
+	}
+
+	/**
+	 * put S-NSSAI to the queue
+	 */
+	public void putSnssaiToQueue(String snssai) {
+		if (!snssaiList.contains(snssai)) 
+			snssaiList.add(snssai);
+	}
+
+	/**
+	 * get S-NSSAI from the queue
+	 */
+	public String getSnnsaiFromQueue() {
+		String snssai = "";
+		try {
+			snssai = snssaiList.remove();
+		}
+		catch(Exception e) {
+
+		}
+		return snssai;
+	}
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmEventProcessor.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmEventProcessor.java
new file mode 100644
index 00000000..99c24c8a
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmEventProcessor.java
@@ -0,0 +1,105 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.onap.slice.analysis.ms.models.pmnotification.Event;
+import org.onap.slice.analysis.ms.models.pmnotification.MeasInfoList;
+import org.onap.slice.analysis.ms.models.pmnotification.MeasResult;
+import org.onap.slice.analysis.ms.models.pmnotification.MeasValuesList;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+/** 
+ * This class is responsible for processing PmEvent
+ */
+@Component
+@Scope("prototype")
+public class PmEventProcessor implements IPmEventProcessor{
+	protected Map<String, List<MeasurementObject>> instanceMap = new HashMap<>();
+
+
+	/**
+	 * Process the PM event
+	 */
+	public Map<String, List<MeasurementObject>> processEvent(Event event) {
+		List<MeasInfoList> measurements = event.getPerf3gppFields().getMeasDataCollection().getMeasInfoList();
+		measurements.forEach(measurement -> {
+			List<String> collectedSubCounters = measurement.getMeasTypes().getsMeasTypesList();
+			List<MeasValuesList> subCounterMeasurements = measurement.getMeasValuesList();	
+			subCounterMeasurements.forEach(subCounterMeasurement -> processMeasurementObjectData(collectedSubCounters, subCounterMeasurement));
+		});
+		return instanceMap;
+	}
+
+	/**
+	 * Process the measurement data from every measurement object. eg cell
+	 */
+	public void processMeasurementObjectData(List<String> collectedSubCounters, MeasValuesList subCounterMeasurement) {
+		List<MeasResult> measResultList = subCounterMeasurement.getMeasResults();
+		String measObjId = subCounterMeasurement.getMeasObjInstId();
+		measResultList.forEach(measResult -> {
+			String pmName = collectedSubCounters.get(measResult.getP()-1);
+			Integer pmValue = Integer.valueOf(measResult.getsValue());
+			Map<String,String> pmMapping = getMapKey(pmName);
+			String snssai = pmMapping.get("snssai");
+			String pm = pmMapping.get("pm"); 
+			Map<String, Integer> pmData = new HashMap<>();
+			pmData.put(pm, pmValue);
+			if (instanceMap.containsKey(snssai)) {
+				int index = instanceMap.get(snssai).indexOf(new MeasurementObject(measObjId));
+				if (index == -1) {
+					instanceMap.get(snssai).add(new MeasurementObject(measObjId,pmData));
+				}
+				else {
+					instanceMap.get(snssai).get(index).getPmData().put(pmName, pmValue);
+				}		    	
+			}
+			else {
+				List<MeasurementObject> l = new LinkedList<>();
+				l.add(new MeasurementObject(measObjId,pmData));
+				instanceMap.put(snssai, l);
+			}
+		});
+	}
+
+	/**
+	 * Fetch pm name and S-NSSAI
+	 */
+	public Map<String, String> getMapKey(String pmName) {
+		String [] pmNameArr = pmName.split("\\.");
+		String snssai = "";
+		String pm = pmNameArr[1];
+		Map<String, String> result = new HashMap<>();
+		result.put("pm", pm);
+		if ((pm.equalsIgnoreCase("PrbUsedDl")) || (pm.equalsIgnoreCase("PrbUsedUl"))){
+			snssai = pmNameArr[2];
+		}
+		result.put("snssai", snssai);
+		return result;
+	}
+}
\ No newline at end of file
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmThread.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmThread.java
new file mode 100644
index 00000000..d9091b3c
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PmThread.java
@@ -0,0 +1,92 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.List;
+import java.util.Map;
+
+import org.onap.slice.analysis.ms.data.repository.PerformanceNotificationsRepository;
+import org.onap.slice.analysis.ms.dmaap.NewPmNotification;
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.onap.slice.analysis.ms.models.SubCounter;
+import org.onap.slice.analysis.ms.models.pmnotification.PmNotification;
+import org.onap.slice.analysis.ms.utils.BeanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/** 
+ * This Thread class consumes pm message from database and puts it in the queue for further processing
+ */
+public class PmThread extends Thread {
+	private static Logger log = LoggerFactory.getLogger(PmThread.class);
+	private NewPmNotification newPmNotification;
+	private PerformanceNotificationsRepository performanceNotificationsRepository;
+	private IPmEventProcessor pmEventProcessor;
+	private PmDataQueue pmDataQueue;
+
+	/**
+	 * parameterized constructor.
+	 */
+	public PmThread(NewPmNotification newPmNotification) {
+		super();
+		this.newPmNotification = newPmNotification;
+		this.performanceNotificationsRepository = BeanUtil.getBean(PerformanceNotificationsRepository.class);
+		this.pmEventProcessor = BeanUtil.getBean(IPmEventProcessor.class);
+		this.pmDataQueue = BeanUtil.getBean(PmDataQueue.class);
+	}
+
+	/**
+	 * check for new PM notification. Fetch notification from the database, process and put it in the pm data queue
+	 */
+	@Override
+	public void run() {
+		log.info("PM thread starting ...");        
+		boolean done = false;
+		PmNotification pmNotification;
+		Map<String, List<MeasurementObject>> processedData;
+		while (!done) {
+			try {
+				Thread.sleep(1000);
+				if (newPmNotification.getNewNotif()) {
+					log.info("New PM notification from Dmaap");
+					String pmNotificationString = performanceNotificationsRepository.getPerformanceNotificationFromQueue();
+					if(pmNotificationString != null) {
+						ObjectMapper mapper = new ObjectMapper();
+						pmNotification = mapper.readValue(pmNotificationString, PmNotification.class);
+						processedData = pmEventProcessor.processEvent(pmNotification.getEvent());
+						String networkFunction = pmNotification.getEvent().getPerf3gppFields().getMeasDataCollection().getMeasuredEntityDn();
+						processedData.forEach((key,value) -> {
+							SubCounter subCounter = new SubCounter(networkFunction, key);
+							pmDataQueue.putDataToQueue(subCounter, value);
+							pmDataQueue.putSnssaiToQueue(subCounter.getMeasuredObject());
+						});
+					}
+				}
+			} catch (Exception e) {
+				log.error("Exception in PM Thread ", e);
+				done = true;
+			}
+		}
+	}
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PolicyService.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PolicyService.java
new file mode 100644
index 00000000..80063398
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/PolicyService.java
@@ -0,0 +1,111 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+
+package org.onap.slice.analysis.ms.service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+import javax.annotation.PostConstruct;
+
+import org.onap.slice.analysis.ms.dmaap.PolicyDmaapClient;
+import org.onap.slice.analysis.ms.models.Configuration;
+import org.onap.slice.analysis.ms.models.policy.AAI;
+import org.onap.slice.analysis.ms.models.policy.AdditionalProperties;
+import org.onap.slice.analysis.ms.models.policy.OnsetMessage;
+import org.onap.slice.analysis.ms.models.policy.Payload;
+import org.onap.slice.analysis.ms.utils.DmaapUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+@Component
+public class PolicyService {
+	private PolicyDmaapClient policyDmaapClient;
+	private static Logger log = LoggerFactory.getLogger(PolicyService.class);
+
+	@PostConstruct
+	public void init() {
+		Configuration configuration = Configuration.getInstance();
+		policyDmaapClient = new PolicyDmaapClient(new DmaapUtils(), configuration);
+	}
+	
+	protected <T> OnsetMessage formPolicyOnsetMessage(String snssai, AdditionalProperties<T> addProps, Map<String, String> serviceDetails) {
+		OnsetMessage onsetmsg = new OnsetMessage();
+		Payload payload = new Payload();
+		payload.setGlobalSubscriberId(serviceDetails.get("globalSubscriberId"));
+		payload.setSubscriptionServiceType(serviceDetails.get("subscriptionServiceType"));
+		payload.setNetworkType("AN");
+		payload.setName(serviceDetails.get("ranNFNSSIId"));
+		payload.setServiceInstanceID(serviceDetails.get("ranNFNSSIId"));
+
+		addProps.setModifyAction("");
+		Map<String, String> nsiInfo = new HashMap<>();
+		nsiInfo.put("nsiId", UUID.randomUUID().toString());
+		nsiInfo.put("nsiName", "");
+		addProps.setNsiInfo(nsiInfo);
+		addProps.setScriptName("AN");
+		addProps.setSliceProfileId(serviceDetails.get("sliceProfileId"));
+		addProps.setModifyAction("reconfigure");
+		List<String> snssaiList = new ArrayList<>();
+		snssaiList.add(snssai);
+		addProps.setSnssaiList(snssaiList);
+
+		payload.setAdditionalProperties(addProps);
+		onsetmsg.setPayload(payload);
+
+		onsetmsg.setClosedLoopControlName("ControlLoop-Slicing-116d7b00-dbeb-4d03-8719-d0a658fa735b");
+		onsetmsg.setClosedLoopAlarmStart(System.currentTimeMillis());
+		onsetmsg.setClosedLoopEventClient("microservice.sliceAnalysisMS");
+		onsetmsg.setClosedLoopEventStatus("ONSET");
+		onsetmsg.setRequestID(UUID.randomUUID().toString());
+		onsetmsg.setTarget("vserver.vserver-name");
+		onsetmsg.setTargetType("VNF");
+		onsetmsg.setFrom("DCAE");
+		onsetmsg.setVersion("1.0.2");
+		AAI aai = new AAI();
+		aai.setVserverIsClosedLoopDisabled("false");
+		aai.setVserverProvStatus("ACTIVE");
+		aai.setVserverVserverName(serviceDetails.get("ranNFNSSIId"));
+		onsetmsg.setAai(aai); 
+		return onsetmsg;
+	}
+
+	protected <T> void sendOnsetMessageToPolicy(String snssai, AdditionalProperties<T> addProps, Map<String, String> serviceDetails) {
+		OnsetMessage onsetMessage = formPolicyOnsetMessage(snssai, addProps, serviceDetails);
+		ObjectMapper obj = new ObjectMapper();
+		String msg =  "";
+		try { 
+			log.debug("Policy onset message for S-NSSAI: {} is {}", snssai, msg);
+			msg = obj.writeValueAsString(onsetMessage);
+			policyDmaapClient.sendNotificationToPolicy(msg);
+		} 
+		catch (Exception e) { 
+			log.error("Error sending notification to policy, {}",e.getMessage());
+		} 		
+	}
+
+}
diff --git a/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/SnssaiSamplesProcessor.java b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/SnssaiSamplesProcessor.java
new file mode 100644
index 00000000..2e56190f
--- /dev/null
+++ b/components/slice-analysis-ms/src/main/java/org/onap/slice/analysis/ms/service/SnssaiSamplesProcessor.java
@@ -0,0 +1,190 @@
+/*******************************************************************************
+ *  ============LICENSE_START=======================================================
+ *  slice-analysis-ms
+ *  ================================================================================
+ *   Copyright (C) 2020 Wipro Limited.
+ *   ==============================================================================
+ *     Licensed under the Apache License, Version 2.0 (the "License");
+ *     you may not use this file except in compliance with the License.
+ *     You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *     Unless required by applicable law or agreed to in writing, software
+ *     distributed under the License is distributed on an "AS IS" BASIS,
+ *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *     See the License for the specific language governing permissions and
+ *     limitations under the License.
+ *     ============LICENSE_END=========================================================
+ *
+ *******************************************************************************/
+package org.onap.slice.analysis.ms.service;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import javax.annotation.PostConstruct;
+
+import org.onap.slice.analysis.ms.configdb.IConfigDbService;
+import org.onap.slice.analysis.ms.models.Configuration;
+import org.onap.slice.analysis.ms.models.MeasurementObject;
+import org.onap.slice.analysis.ms.models.SubCounter;
+import org.onap.slice.analysis.ms.models.policy.AdditionalProperties;
+import org.onap.slice.analysis.ms.utils.BeanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+/** 
+ * This class process the measurement data of an S-NSSAI
+ */
+@Component
+@Scope("Prototype")
+public class SnssaiSamplesProcessor {
+	private static Logger log = LoggerFactory.getLogger(SnssaiSamplesProcessor.class);
+
+	private PolicyService policyService;
+	private IConfigDbService configDbService;
+	private PmDataQueue pmDataQueue;
+	private AverageCalculator averageCalculator;
+	private List<MeasurementObject> snssaiMeasurementList = new ArrayList<>();
+	private Map<String, List<String>> ricToCellMapping = new HashMap<>();
+	private Map<String, Map<String, Integer>> ricToPrbsMapping = new HashMap<>();
+	private Map<String, Map<String, Integer>> ricToThroughputMapping = new HashMap<>();
+	private int samples;
+	private List<String> pmsToCompute;	
+	private Map<String, String> prbThroughputMapping = new HashMap<>(); 
+	private int minPercentageChange;
+	
+	@PostConstruct
+	public void init() {
+		Configuration configuration = Configuration.getInstance();
+		samples = configuration.getSamples();
+		pmsToCompute = new ArrayList<>();
+		pmsToCompute.add("PrbUsedDl");
+		pmsToCompute.add("PrbUsedUl");
+		prbThroughputMapping = new HashMap<>();
+		prbThroughputMapping.put("PrbUsedDl", "dLThptPerSlice");
+		prbThroughputMapping.put("PrbUsedUl", "uLThptPerSlice");
+		minPercentageChange = configuration.getMinPercentageChange();
+		policyService = BeanUtil.getBean(PolicyService.class);
+		configDbService = BeanUtil.getBean(IConfigDbService.class);
+		pmDataQueue = BeanUtil.getBean(PmDataQueue.class);
+		averageCalculator = BeanUtil.getBean(AverageCalculator.class);
+	}
+
+	/**
+	 * process the measurement data of an S-NSSAI
+	 */
+	public void processSamplesOfSnnsai(String snssai, List<String> networkFunctions) {
+		networkFunctions.forEach(nf -> {
+			log.debug("Average of samples for {}:", snssai);
+			addToMeasurementList(averageCalculator.findAverageOfSamples(pmDataQueue.getSamplesFromQueue(new SubCounter(nf, snssai), samples)));
+		});		
+		ricToCellMapping = configDbService.fetchRICsOfSnssai(snssai);	
+		log.debug("RIC to Cell Mapping for {} S-NSSAI: {}", snssai, ricToCellMapping);
+		Map<String, Map<String, Integer>> ricConfiguration = configDbService.fetchCurrentConfigurationOfRIC(snssai);
+		Map<String, Integer> sliceConfiguration = configDbService.fetchCurrentConfigurationOfSlice(snssai);
+		log.debug("RIC Configuration: {}", ricConfiguration);
+		log.debug("Slice Configuration: {}", sliceConfiguration);
+		pmsToCompute.forEach(pm -> {
+			sumOfPrbsAcrossCells(pm);
+			int sum = computeSum(pm);
+			computeThroughput(sliceConfiguration, sum, pm);
+			calculatePercentageChange(ricConfiguration, pm);
+		});
+		updateConfiguration();	
+		if(ricToThroughputMapping.size() > 0) {
+			AdditionalProperties<Map<String, Map<String, Integer>>> addProps = new AdditionalProperties<>();
+			addProps.setResourceConfig(ricToThroughputMapping);
+			policyService.sendOnsetMessageToPolicy(snssai, addProps, configDbService.fetchServiceDetails(snssai));
+		}
+
+	}
+
+	/**
+	 * process the measurement data of an S-NSSAI
+	 */
+	protected void updateConfiguration() {
+		Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
+		Map.Entry<String, Map<String,Integer>> entry = null;
+		while(it.hasNext()) {
+			entry = it.next();
+			if(entry.getValue().size() == 0) {
+				it.remove();
+			}
+		}
+	}
+
+	private void addToMeasurementList(List<MeasurementObject> sample) {
+		snssaiMeasurementList.addAll(sample);
+	}
+
+	/**
+	 * Calculate the change in the configuration value and keep the configuration only if it is greater than a
+	 * specific limit 
+	 */
+	protected void calculatePercentageChange(Map<String, Map<String, Integer>> ricConfiguration, String pm) {
+		Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToThroughputMapping.entrySet().iterator();
+		Map.Entry<String, Map<String,Integer>> entry = null;
+		float existing = 0;
+		float change = 0;
+		while(it.hasNext()) {
+			entry = it.next();
+			existing = ricConfiguration.get(entry.getKey()).get(pm);
+			change = ((Math.abs(entry.getValue().get(pm) - existing))/existing)*100;
+			if (change <= minPercentageChange) {
+				ricToThroughputMapping.get(entry.getKey()).remove(pm);
+			}
+		}
+	}
+	
+	protected void sumOfPrbsAcrossCells(String pmName) {
+		ricToCellMapping.forEach((ric,cells) -> {
+			int sumOfPrbs = 0;
+			for(String cell : cells) {
+				int index = snssaiMeasurementList.indexOf(new MeasurementObject(cell));
+				sumOfPrbs += snssaiMeasurementList.get(index).getPmData().get(pmName);
+			}
+			if(ricToPrbsMapping.containsKey(ric)) {
+				ricToPrbsMapping.get(ric).put(pmName, sumOfPrbs);
+			}
+			else {
+				Map<String, Integer> pmToPrbMapping  = new HashMap<>();
+				pmToPrbMapping.put(pmName, sumOfPrbs);
+				ricToPrbsMapping.put(ric, pmToPrbMapping);
+			}
+		});
+	}
+
+	protected Integer computeSum(String pm) {
+		return ricToPrbsMapping.entrySet().stream().map(x -> x.getValue().get(pm)).reduce(0, Integer::sum);
+	}
+
+	protected void computeThroughput(Map<String, Integer> sliceConfiguration, int sum, String pm) {
+		Iterator<Map.Entry<String, Map<String,Integer>>> it = ricToPrbsMapping.entrySet().iterator();
+		Map.Entry<String, Map<String,Integer>> entry = null;
+		Map<String, Integer> throughtputMap = null;
+		String ric = "";
+		int value = 0;
+		while(it.hasNext()) {
+			entry = it.next();
+			ric = entry.getKey();
+			value = Math.round(((float)entry.getValue().get(pm)/sum)*(float)sliceConfiguration.get(prbThroughputMapping.get(pm)));
+			if(ricToThroughputMapping.containsKey(ric)) {
+				ricToThroughputMapping.get(ric).put(prbThroughputMapping.get(pm), value);
+			}
+			else {
+				throughtputMap = new HashMap<>();
+				throughtputMap.put(prbThroughputMapping.get(pm), value);
+				ricToThroughputMapping.put(ric, throughtputMap);
+			}
+		}
+
+	}
+
+}