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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.seqgen.impl;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.apache.commons.lang3.StringUtils;
import org.onap.appc.dg.flowbuilder.FlowBuilder;
import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModelException;
import org.onap.appc.dg.flowbuilder.impl.FlowBuilderFactory;
import org.onap.appc.dg.objects.FlowStrategies;
import org.onap.appc.dg.objects.InventoryModel;
import org.onap.appc.dg.objects.VnfcDependencyModel;
import org.onap.appc.dg.objects.VnfcFlowModel;
import org.onap.appc.domainmodel.Vnfc;
import org.onap.appc.domainmodel.Vserver;
import org.onap.appc.exceptions.APPCException;
import org.onap.appc.seqgen.SequenceGenerator;
import org.onap.appc.seqgen.objects.ActionIdentifier;
import org.onap.appc.seqgen.objects.Constants;
import org.onap.appc.seqgen.objects.PreCheckOption;
import org.onap.appc.seqgen.objects.Response;
import org.onap.appc.seqgen.objects.SequenceGeneratorInput;
import org.onap.appc.seqgen.objects.Transaction;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import static org.onap.appc.seqgen.objects.Constants.Action;
import static org.onap.appc.seqgen.objects.Constants.ActionLevel;
import static org.onap.appc.seqgen.objects.Constants.ResponseAction;
import static org.onap.appc.seqgen.objects.Constants.ResponseMessage;
import static org.onap.appc.seqgen.objects.Constants.PreCheckOperator;
import static org.onap.appc.seqgen.objects.Constants.Capabilties;
import static org.onap.appc.seqgen.objects.Constants.CapabilityLevel;
import static org.onap.appc.seqgen.objects.Constants.RETRY_COUNT_VALUE;
import static org.onap.appc.seqgen.objects.Constants.WAIT_TIME;
import static org.onap.appc.seqgen.objects.Constants.RETRY_COUNT;
import static org.onap.appc.seqgen.objects.Constants.WAIT_TIME_VALUE;;
public class StartSequenceGenerator implements SequenceGenerator {
private static final EELFLogger logger = EELFManager.getInstance().getLogger(StartSequenceGenerator.class);
private List<Transaction> generateSequenceWithOutDependency(SequenceGeneratorInput input) throws APPCException {
List<Transaction> transactionList = new LinkedList<>();
Integer transactionId = 1;
List<Vserver> vservers = input.getInventoryModel().getVnf().getVservers();
List<Integer> transactionIds = new LinkedList<>();
for (Vserver vm : vservers) {
Transaction transaction = new Transaction();
transaction.setTransactionId(transactionId);
transactionIds.add(transactionId++);
transaction.setAction(Action.START.getActionType());
transaction.setActionLevel(ActionLevel.VM.getAction());
ActionIdentifier actionIdentifier = new ActionIdentifier();
actionIdentifier.setvServerId(vm.getId());
transaction.setActionIdentifier(actionIdentifier);
transaction.setPayload(input.getRequestInfo().getPayload());
if(vservers.size()>1){
Response ignoreResponse = new Response();
ignoreResponse.setResponseMessage(ResponseMessage.FAILURE.getResponse());
Map<String, String> ignoreAction = new HashMap<>();
ignoreAction.put(ResponseAction.IGNORE.getAction(), Boolean.TRUE.toString());
ignoreResponse.setResponseAction(ignoreAction);
transaction.addResponse(ignoreResponse);
}
transactionList.add(transaction);
}
return transactionList;
}
private boolean checkSingleTransaction(List<Vnfc> invVnfcList) {
int vServerCount=0;
for(Vnfc vnfc : invVnfcList) {
List<Vserver> vms = vnfc.getVserverList();
vServerCount=vServerCount+vms.size();
}
return vServerCount <= 1;
}
private void updateResponse(Transaction transaction) {
Response ignoreResponse = new Response();
ignoreResponse.setResponseMessage(ResponseMessage.FAILURE.getResponse());
Map<String, String> ignoreAction = new HashMap<>();
ignoreAction.put(ResponseAction.IGNORE.getAction(), Boolean.TRUE.toString());
ignoreResponse.setResponseAction(ignoreAction);
transaction.addResponse(ignoreResponse);
}
private List<Transaction> generateSequenceWithDependencyModel(VnfcFlowModel flowModel, SequenceGeneratorInput input) throws APPCException {
Integer waitTime = readWaitTime(input);
Integer retryCount = readRetryCount(input);
List<Transaction> transactionList = new LinkedList<>();
Integer transactionId = 1;
Iterator<List<Vnfc>> itr = flowModel.getModelIterator();
while (itr.hasNext()) {
List<Vnfc> vnfcs = itr.next();
for (Vnfc vnfc : vnfcs) {
List<Vserver> vms = vnfc.getVserverList();
List<Integer> transactionIds = new LinkedList<>();
if(!vms.isEmpty()) {
for (Vserver vm : vms) {
Transaction transaction = new Transaction();
transaction.setTransactionId(transactionId);
transactionIds.add(transactionId++);
transaction.setAction(Action.START.getActionType());
transaction.setActionLevel(ActionLevel.VM.getAction());
ActionIdentifier actionIdentifier = new ActionIdentifier();
actionIdentifier.setvServerId(vm.getId());
transaction.setActionIdentifier(actionIdentifier);
transaction.setPayload(input.getRequestInfo().getPayload());
Response ignoreResponse = new Response();
ignoreResponse.setResponseMessage(ResponseMessage.FAILURE.getResponse());
Map<String, String> ignoreAction = new HashMap<>();
ignoreAction.put(ResponseAction.IGNORE.getAction(), Boolean.TRUE.toString());
ignoreResponse.setResponseAction(ignoreAction);
transaction.addResponse(ignoreResponse);
transactionList.add(transaction);
}
boolean startApplicationSupported = readApplicationStartCapability(input);
if (startApplicationSupported) {
Transaction startAppTransaction = new Transaction();
startAppTransaction.setTransactionId(transactionId++);
startAppTransaction.setAction(Action.START_APPLICATION.getActionType());
startAppTransaction.setActionLevel(ActionLevel.VNFC.getAction());
ActionIdentifier startActionIdentifier = new ActionIdentifier();
startActionIdentifier.setVnfcName(vnfc.getVnfcName());
startAppTransaction.setActionIdentifier(startActionIdentifier);
startAppTransaction.setPayload(input.getRequestInfo().getPayload());
List<PreCheckOption> preCheckOptions = buildPreCheckOptions(transactionIds);
startAppTransaction.setPreCheckOperator(PreCheckOperator.ANY.getOperator());
startAppTransaction.setPrecheckOptions(preCheckOptions);
transactionList.add(startAppTransaction);
}
boolean healthCheckSupported = readHealthCheckCapabilites(input.getCapability());
if (healthCheckSupported) {
Transaction healthCheckTransaction = new Transaction();
healthCheckTransaction.setTransactionId(transactionId++);
healthCheckTransaction.setAction(Action.HEALTH_CHECK.getActionType());
healthCheckTransaction.setActionLevel(ActionLevel.VNFC.getAction());
ActionIdentifier healthCheckActionIdentifier = new ActionIdentifier();
healthCheckActionIdentifier.setVnfcName(vnfc.getVnfcName());
healthCheckTransaction.setActionIdentifier(healthCheckActionIdentifier);
healthCheckTransaction.setPayload(input.getRequestInfo().getPayload());
Response retryResponse = new Response();
retryResponse.setResponseMessage(ResponseMessage.UNHEALTHY.getResponse());
Map<String, String> retryAction = new HashMap<>();
retryAction.put(ResponseAction.RETRY.getAction(), retryCount.toString());
retryAction.put(ResponseAction.WAIT.getAction(), waitTime.toString());
retryResponse.setResponseAction(retryAction);
healthCheckTransaction.addResponse(retryResponse);
Response healthyResponse = new Response();
healthyResponse.setResponseMessage(ResponseMessage.HEALTHY.getResponse());
Map<String, String> healthyAction = new HashMap<>();
healthyAction.put(ResponseAction.CONTINUE.getAction().toLowerCase(), Boolean.TRUE.toString());
healthyResponse.setResponseAction(healthyAction);
healthCheckTransaction.addResponse(healthyResponse);
Response failureResponse = new Response();
failureResponse.setResponseMessage(ResponseMessage.FAILURE.getResponse());
Map<String, String> failureResonseAction = new HashMap<>();
failureResonseAction.put(ResponseAction.STOP.getAction(), Boolean.TRUE.toString());
failureResponse.setResponseAction(failureResonseAction);
healthCheckTransaction.addResponse(failureResponse);
transactionList.add(healthCheckTransaction);
}
}
}
}
return transactionList;
}
private List<PreCheckOption> buildPreCheckOptions(List<Integer> transactionIds) {
List<PreCheckOption> preCheckOptions = new LinkedList<>();
for (Integer vmTransactionId : transactionIds) {
PreCheckOption option = new PreCheckOption();
option.setPreTransactionId(vmTransactionId);
option.setParamName("status");
option.setParamValue("success");
preCheckOptions.add(option);
}
return preCheckOptions;
}
@Override
public List<Transaction> generateSequence(SequenceGeneratorInput input) throws APPCException {
if (input.getRequestInfo().getActionLevel().equals(ActionLevel.VNF.getAction()) && input.getDependencyModel() != null) {
if(isVnfcPresent(input)) {
FlowStrategies flowStrategy = readFlowStrategy(input);
VnfcFlowModel flowModel = null;
try {
flowModel = buildFlowModel(input.getInventoryModel()
, input.getDependencyModel(), flowStrategy);
} catch (InvalidDependencyModelException invalidDependencyModelException) {
logger.error("Error Generating Sequence", invalidDependencyModelException);
throw new APPCException(invalidDependencyModelException.getMessage(), invalidDependencyModelException);
}
logger.debug("Flow Model " + flowModel);
return generateSequenceWithDependencyModel(flowModel, input);
}
else throw new APPCException("Vnfc details is missing in the input");
} else {
logger.info("Generating sequence without dependency model");
return generateSequenceWithOutDependency(input);
}
}
private VnfcFlowModel buildFlowModel(InventoryModel inventoryModel, VnfcDependencyModel dependencyModel, FlowStrategies flowStrategy) throws APPCException, InvalidDependencyModelException {
FlowBuilder flowBuilder = FlowBuilderFactory.getInstance().getFlowBuilder(flowStrategy);
if (flowBuilder == null) {
throw new APPCException("Flow Strategy not supported " + flowStrategy);
}
return flowBuilder.buildFlowModel(dependencyModel, inventoryModel);
}
private FlowStrategies readFlowStrategy(SequenceGeneratorInput sequenceGeneratorInput) {
Map<String, String> tunableParams = sequenceGeneratorInput.getTunableParams();
FlowStrategies strategy=null;
String strategyStr = null;
if (tunableParams != null) {
strategyStr = tunableParams.get(Constants.STRATEGY);
strategy = FlowStrategies.findByString(strategyStr);
}
if (strategy == null)
strategy= FlowStrategies.FORWARD;
return strategy;
}
private boolean readHealthCheckCapabilites(Map<String, List<String>> capabilities) {
if (capabilities != null) {
List<String> vnfcCapabilities = capabilities.get(CapabilityLevel.VNFC.getLevel());
if (vnfcCapabilities != null)
return vnfcCapabilities.stream()
.anyMatch(p -> Capabilties.HEALTH_CHECK.getCapability().equalsIgnoreCase(p));
}
return false;
}
private boolean readApplicationStartCapability(SequenceGeneratorInput input) {
Map<String, List<String>> capability = input.getCapability();
if (capability != null) {
List<String> vnfcCapabilities = capability.get(CapabilityLevel.VNFC.getLevel());
if (vnfcCapabilities != null)
return vnfcCapabilities.stream().anyMatch(p -> Capabilties.START_APPLICATION.getCapability().equalsIgnoreCase(p));
}
return false;
}
private Integer readRetryCount(SequenceGeneratorInput input) throws APPCException {
String paramValStr = input.getTunableParams().get(RETRY_COUNT);
if (StringUtils.isEmpty(paramValStr)) {
return RETRY_COUNT_VALUE;
}
try {
return Integer.parseInt(paramValStr);
} catch (NumberFormatException e) {
String message = "Invalid Number for Retry Count " + paramValStr;
logger.error(message, e);
throw new APPCException(message);
}
}
private boolean isVnfcPresent(SequenceGeneratorInput input){
boolean vnfcPresent=true;
List<Vserver> vservers = input.getInventoryModel().getVnf().getVservers();
for (Vserver vm : vservers) {
if(!(vm.getVnfc()!=null&& vm.getVnfc().getVnfcType()!=null&& vm.getVnfc().getVnfcName()!=null)){
vnfcPresent=false;break;
}
}
return vnfcPresent;
}
private Integer readWaitTime(SequenceGeneratorInput input) throws APPCException {
String paramValStr = input.getTunableParams().get(WAIT_TIME);
if (StringUtils.isEmpty(paramValStr)) {
return WAIT_TIME_VALUE;
}
try {
return Integer.parseInt(paramValStr);
} catch (NumberFormatException e) {
String message = "Invalid Number for Wait Time " + paramValStr;
logger.error(message, e);
throw new APPCException(message);
}
}
}
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