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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* ================================================================================
* Modifications Copyright (C) 2019 Ericsson
* =============================================================================
* 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.appc.seqgen.provider;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.apache.commons.lang.StringUtils;
import org.onap.appc.dg.objects.InventoryModel;
import org.onap.appc.dg.objects.Node;
import org.onap.appc.dg.objects.VnfcDependencyModel;
import org.onap.appc.domainmodel.Vnf;
import org.onap.appc.domainmodel.Vnfc;
import org.onap.appc.domainmodel.Vserver;
import org.onap.appc.domainmodel.lcm.VNFOperation;
import org.onap.appc.exceptions.APPCException;
import org.onap.appc.seqgen.SequenceGenerator;
import org.onap.appc.seqgen.impl.SequenceGeneratorFactory;
import org.onap.appc.seqgen.objects.Constants;
import org.onap.appc.seqgen.objects.PreCheckOption;
import org.onap.appc.seqgen.objects.RequestInfo;
import org.onap.appc.seqgen.objects.RequestInfoBuilder;
import org.onap.appc.seqgen.objects.Response;
import org.onap.appc.seqgen.objects.SequenceGeneratorInput;
import org.onap.appc.seqgen.objects.SequenceGeneratorInputBuilder;
import org.onap.appc.seqgen.objects.Transaction;
import org.opendaylight.controller.md.sal.binding.api.DataBroker;
import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
import org.opendaylight.controller.sal.binding.api.NotificationProviderService;
import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.GenerateSequenceInput;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.GenerateSequenceOutput;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.GenerateSequenceOutputBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.SequenceGeneratorService;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.dependency.info.dependency.info.Vnfcs;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.inventory.info.inventory.info.vnf.info.Vm;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.StatusBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.Transactions;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.TransactionsBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.ActionIdentifier;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.ActionIdentifierBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.PrecheckOptions;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.PrecheckOptionsBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.Responses;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.ResponsesBuilder;
import org.opendaylight.yang.gen.v1.org.onap.appc.sequencegenerator.rev170706.response.transactions.responses.ResponseActionBuilder;
import org.opendaylight.yangtools.yang.common.RpcResult;
import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.google.common.util.concurrent.Futures;
public class SequenceGeneratorProvider implements AutoCloseable,SequenceGeneratorService {
protected DataBroker dataBroker;
protected RpcProviderRegistry rpcRegistry;
protected NotificationProviderService notificationService;
protected BindingAwareBroker.RpcRegistration<SequenceGeneratorService> rpcRegistration;
private final EELFLogger log = EELFManager.getInstance().getLogger(SequenceGeneratorProvider.class);
private final ExecutorService executor;
private final static String APP_NAME = "SequenceGeneratorProvider";
public SequenceGeneratorProvider(DataBroker dataBroker2, NotificationProviderService notificationProviderService,
RpcProviderRegistry rpcRegistry2) {
log.info("Creating provider for " + APP_NAME);
executor = Executors.newFixedThreadPool(1);
this.dataBroker = dataBroker2;
this.notificationService = notificationProviderService;
this.rpcRegistry = rpcRegistry2;
if (this.rpcRegistry != null) {
rpcRegistration = rpcRegistry.addRpcImplementation(SequenceGeneratorService.class, this);
}
log.info("Initialization complete for " + APP_NAME);
}
@Override
public void close() throws Exception {
log.info("Closing provider for " + APP_NAME);
if(this.executor != null){
executor.shutdown();
}
if(this.rpcRegistration != null) {
rpcRegistration.close();
}
log.info("Successfully closed provider for " + APP_NAME);
}
@Override
public Future<RpcResult<GenerateSequenceOutput>> generateSequence(GenerateSequenceInput input) {
RpcResult<GenerateSequenceOutput> rpcResult=null;
log.debug("Received input = " + input );
try {
if(input.getRequestInfo()==null){
throw new APPCException("Request info is missing in the input");
}
SequenceGenerator seqGenerator = SequenceGeneratorFactory.getInstance()
.createSequenceGenerator(VNFOperation.findByString(input.getRequestInfo().getAction().name()));
SequenceGeneratorInput seqGenInput = buildSeqGenInput(input);
List<Transaction> transactions = seqGenerator.generateSequence(seqGenInput);
rpcResult = buildSuccessResponse(transactions);
} catch (Exception e) {
log.error("Error Generating Sequence",e);
rpcResult = buildFailureResponse(e.getMessage());
}
return Futures.immediateFuture(rpcResult);
}
private RpcResult<GenerateSequenceOutput> buildSuccessResponse(List<Transaction> transactions) {
log.info("Building response from the list of transactions");
List<Transactions> transactionList = new LinkedList<>();
for(Transaction transaction: transactions) {
ActionIdentifier actionIdentifier = buildActionIdentifierForResponse(transaction);
List<PrecheckOptions> precheckOptions = buildPrecheckOptionsForResponse(transaction);
List<Responses> responseList = getResponses(transaction);
Transactions transactionObj
= new TransactionsBuilder()
.setActionIdentifier(actionIdentifier)
.setAction(transaction.getAction())
.setActionLevel(transaction.getActionLevel())
.setPrecheckOperator(transaction.getPreCheckOperator())
.setPayload(transaction.getPayload())
.setTransactionId(transaction.getTransactionId())
.setPrecheckOptions(precheckOptions)
.setResponses(responseList)
.build();
transactionList.add(transactionObj);
}
GenerateSequenceOutputBuilder builder = new GenerateSequenceOutputBuilder()
.setTransactions(transactionList);
return RpcResultBuilder
.<GenerateSequenceOutput> status(true)
.withResult(builder.build()).build();
}
private ActionIdentifier buildActionIdentifierForResponse(Transaction transaction) {
log.info("Adding action identifiers to response.");
ActionIdentifier actionIdentifier = null;
if(transaction.getActionIdentifier() != null){
actionIdentifier = new ActionIdentifierBuilder()
.setVnfId(transaction.getActionIdentifier().getVnfId())
.setVnfcName(transaction.getActionIdentifier().getVnfcName())
.setVserverId(transaction.getActionIdentifier().getvServerId())
.build();
}
return actionIdentifier;
}
private List<PrecheckOptions> buildPrecheckOptionsForResponse(Transaction transaction) {
log.info("Adding Precheck options to response");
List<PrecheckOptions> precheckOptions = new LinkedList<>();
if(transaction.getPrecheckOptions() != null){
for(PreCheckOption option:transaction.getPrecheckOptions()){
PrecheckOptions precheckOption = new PrecheckOptionsBuilder()
.setParamName(option.getParamName())
.setParamValue(option.getParamValue())
.setPreTransactionId(option.getPreTransactionId())
.setRule(option.getRule())
.build();
precheckOptions.add(precheckOption);
}
}
return precheckOptions;
}
private List<Responses> getResponses(Transaction transaction) {
List<Responses> responseList = new LinkedList<>();
for(Response resp : transaction.getResponses()){
Map<String,String> responseActions = resp.getResponseAction();
ResponseActionBuilder responseActionBuilder = new ResponseActionBuilder();
if(responseActions.get(Constants.ResponseAction.WAIT.getAction()) != null){
responseActionBuilder = responseActionBuilder.setWait(Integer.parseInt(responseActions.get(Constants.ResponseAction.WAIT.getAction())));
}
if(responseActions.get(Constants.ResponseAction.RETRY.getAction()) != null){
responseActionBuilder = responseActionBuilder.setRetry(Integer.parseInt(responseActions.get(Constants.ResponseAction.RETRY.getAction())));
}
if(responseActions.get(Constants.ResponseAction.CONTINUE.getAction().toLowerCase())!=null){
responseActionBuilder = responseActionBuilder
.setContinue(Boolean.parseBoolean(responseActions.get(Constants.ResponseAction.CONTINUE.getAction().toLowerCase())));
}
if(responseActions.get(Constants.ResponseAction.IGNORE.getAction()) != null){
responseActionBuilder = responseActionBuilder.setIgnore(Boolean.parseBoolean(responseActions.get(Constants.ResponseAction.IGNORE.getAction())));
}
if(responseActions.get(Constants.ResponseAction.STOP.getAction()) != null){
responseActionBuilder = responseActionBuilder.setStop(Boolean.parseBoolean(responseActions.get(Constants.ResponseAction.STOP.getAction())));
}
if(responseActions.get(Constants.ResponseAction.JUMP.getAction()) != null){
responseActionBuilder = responseActionBuilder.setJump(Integer.parseInt(responseActions.get(Constants.ResponseAction.JUMP.getAction())));
}
Responses response = new ResponsesBuilder()
.setResponseMessage(resp.getResponseMessage())
.setResponseAction(responseActionBuilder.build())
.build();
responseList.add(response);
}
return responseList;
}
private SequenceGeneratorInput buildSeqGenInput(GenerateSequenceInput input) throws APPCException {
log.info("Building SequenceGeneratorInput from Yang object GenerateSequenceInput.");
validateMandatory(input);
RequestInfo requestInfo = buildRequestInfoForSeqGenInput(input);
InventoryModel inventoryModel = readInventoryModel(input);
VnfcDependencyModel dependencyModel = readDependencyModel(input);
if(dependencyModel != null){
validateInventoryModelWithDependencyModel(dependencyModel, inventoryModel);
}
SequenceGeneratorInputBuilder builder = new SequenceGeneratorInputBuilder()
.requestInfo(requestInfo)
.inventoryModel(inventoryModel)
.dependendcyModel(dependencyModel);
builder = buildCapabilitiesForSeqGenInput(input, builder);
builder = buildTunableParamsForSeqGenInput(input, builder);
return builder.build();
}
private SequenceGeneratorInputBuilder buildTunableParamsForSeqGenInput(GenerateSequenceInput input, SequenceGeneratorInputBuilder builder) {
log.info("Initializing Tunable Parameters based on YANG object.");
if(input.getTunableParameters() != null){
builder = builder.tunableParameter(Constants.RETRY_COUNT,String.valueOf(input.getTunableParameters().getRetryCount()))
.tunableParameter(Constants.WAIT_TIME,String.valueOf(input.getTunableParameters().getWaitTime()));
if(input.getTunableParameters().getStrategy() != null){
builder = builder.tunableParameter(Constants.STRATEGY,input.getTunableParameters().getStrategy().name());
}
}
return builder;
}
private SequenceGeneratorInputBuilder buildCapabilitiesForSeqGenInput(GenerateSequenceInput input, SequenceGeneratorInputBuilder builder) {
log.info("Initializing capabilities based on YANG object.");
if(input.getCapabilities() != null){
if(input.getCapabilities().getVnf() != null){
builder = builder.capability("vnf", input.getCapabilities().getVnf());
}
if(input.getCapabilities().getVnfc() != null){
builder = builder.capability("vnfc", input.getCapabilities().getVnfc());
}
if(input.getCapabilities().getVm() != null){
builder = builder.capability("vm", input.getCapabilities().getVm());
}
if(input.getCapabilities().getVfModule() != null){
builder = builder.capability("vf-module", input.getCapabilities().getVfModule());
}
}
return builder;
}
private void validateInventoryModelWithDependencyModel(VnfcDependencyModel dependencyModel, InventoryModel inventoryModel) throws APPCException {
Set<String> dependencyModelVnfcSet = new HashSet<>();
Set<String> dependencyModelMandatoryVnfcSet = new HashSet<>();
Set<String> inventoryModelVnfcsSet = new HashSet<>();
for (Node<Vnfc> node : dependencyModel.getDependencies()) {
dependencyModelVnfcSet.add(node.getChild().getVnfcType().toLowerCase());
if (node.getChild().isMandatory()) {
dependencyModelMandatoryVnfcSet.add(node.getChild().getVnfcType().toLowerCase());
}
}
for (Vnfc vnfc : inventoryModel.getVnf().getVnfcs()) {
inventoryModelVnfcsSet.add(vnfc.getVnfcType().toLowerCase());
}
// if dependency model and inventory model contains same set of VNFCs, validation succeed and hence return
if (dependencyModelVnfcSet.equals(inventoryModelVnfcsSet)) {
return;
}
if (inventoryModelVnfcsSet.size() >= dependencyModelVnfcSet.size()) {
Set<String> difference = new HashSet<>(inventoryModelVnfcsSet);
difference.removeAll(dependencyModelVnfcSet);
log.error("Dependency model is missing following vnfc type(s): " + difference);
throw new APPCException("Dependency model is missing following vnfc type(s): " + difference);
} else {
Set<String> difference = new HashSet<>(dependencyModelMandatoryVnfcSet);
difference.removeAll(inventoryModelVnfcsSet);
if (difference.size() > 0) {
log.error("Inventory model is missing following mandatory vnfc type(s): " + difference);
throw new APPCException("VMs missing for the mandatory VNFC : " + difference);
}
}
}
private RequestInfo buildRequestInfoForSeqGenInput(GenerateSequenceInput input) {
log.info("Building RequestInfo from Yang object");
RequestInfoBuilder requestInfobuilder = buildRequestInformation(input);
if(input.getRequestInfo().getActionIdentifier() != null){
requestInfobuilder = buildActionIdentifiers(input, requestInfobuilder);
}
return requestInfobuilder.build();
}
private RequestInfoBuilder buildActionIdentifiers(GenerateSequenceInput input, RequestInfoBuilder requestInfobuilder) {
log.info("Initializing actionIdentifier for RequestInfo");
requestInfobuilder = requestInfobuilder
.actionIdentifier()
.vnfId(input.getRequestInfo().getActionIdentifier().getVnfId())
.vnfcName(input.getRequestInfo().getActionIdentifier().getVnfcName())
.vServerId(input.getRequestInfo().getActionIdentifier().getVserverId());
return requestInfobuilder;
}
private RequestInfoBuilder buildRequestInformation(GenerateSequenceInput input) {
log.info("Initializing action, actionLevel and payload for RequestInfo");
return new RequestInfoBuilder()
.action(input.getRequestInfo().getAction().name())
.actionLevel(input.getRequestInfo().getActionLevel().getName().toLowerCase())
.payload(input.getRequestInfo().getPayload());
}
private void validateMandatory(GenerateSequenceInput input) throws APPCException {
if(input.getRequestInfo() == null){
throw new APPCException("Request Info is not present in the request");
}
if(input.getRequestInfo().getAction() == null){
throw new APPCException("Action is not present in the request");
}
if(input.getInventoryInfo() == null){
throw new APPCException("inventoryInfo is not provided in the input");
}
if (input.getInventoryInfo().getVnfInfo() == null) {
log.error("vnfInfo is null in the input");
throw new APPCException("vnfInfo is missing in the input");
}
if(input.getInventoryInfo().getVnfInfo().getVm().isEmpty()){
log.error("Null vm information in input.");
throw new APPCException("VnfInfo is missing in the input");
}
log.info("Mandatory information present in the request.");
}
private VnfcDependencyModel readDependencyModel(GenerateSequenceInput input) throws APPCException{
log.info("Initializing DependencyModel from YANG model.");
if(input.getDependencyInfo() == null || input.getDependencyInfo().getVnfcs() == null || input.getDependencyInfo().getVnfcs().isEmpty()){
log.info("No dependency model information is present for the request.");
return null;
}
List<Vnfcs> vnfcs = input.getDependencyInfo().getVnfcs();
Set<Node<org.onap.appc.domainmodel.Vnfc>> dependencies = new HashSet<>();
Set<String> parentVnfcs = new HashSet<>();
Set<String> allVnfcTypes = new HashSet<>();
for(Vnfcs vnfcObj:vnfcs) {
org.onap.appc.domainmodel.Vnfc vnfc = new org.onap.appc.domainmodel.Vnfc();
vnfc.setVnfcType(vnfcObj.getVnfcType());
allVnfcTypes.add(vnfcObj.getVnfcType());
vnfc.setResilienceType(vnfcObj.getResilience());
Node<Vnfc> currentNode = buildVnfcNodeForDependenyInfo(dependencies, vnfcObj, vnfc);
for(String parentVnfcType:vnfcObj.getParents()) {
parentVnfcs.add(parentVnfcType);
Node<Vnfc> parentNode = readNode(parentVnfcType, dependencies);
if(parentNode == null){
Vnfc parentVnfc = new Vnfc();
parentVnfc.setVnfcType(parentVnfcType);
parentNode = new Node<>(parentVnfc);
currentNode.addParent(parentVnfc);
dependencies.add(parentNode);
}
else{
currentNode.addParent(parentNode.getChild());
}
}
}
for(String parent:parentVnfcs){
if(!allVnfcTypes.contains(parent)){
throw new APPCException("Dependency model missing vnfc type " + parent);
}
}
return new VnfcDependencyModel(dependencies);
}
private Node<Vnfc> buildVnfcNodeForDependenyInfo(Set<Node<Vnfc>> dependencies, Vnfcs vnfcObj, Vnfc vnfc) {
Node<Vnfc> currentNode = readNode(vnfcObj.getVnfcType(), dependencies);
if(currentNode == null){
currentNode = new Node<>(vnfc);
dependencies.add(currentNode);
}
else{
currentNode.getChild().setResilienceType(vnfcObj.getResilience());
currentNode.getChild().setMandatory(vnfcObj.isMandatory());
}
return currentNode;
}
private Node<org.onap.appc.domainmodel.Vnfc> readNode(String vnfcType, Set<Node<org.onap.appc.domainmodel.Vnfc>> dependencies) {
for(Node<org.onap.appc.domainmodel.Vnfc> node : dependencies){
if(node.getChild().getVnfcType().equalsIgnoreCase(vnfcType)){
return node;
}
}
return null;
}
private InventoryModel readInventoryModel(GenerateSequenceInput input) throws APPCException {
log.info("Initializing InventoryModel from Yang input model");
Vnf vnf = createVnfForInventoryModel(input);
Map<org.onap.appc.domainmodel.Vnfc, List<Vserver>> map = new HashMap<>();
buildVserverDetailsForInventoryModel(input, vnf, map);
for(Map.Entry<org.onap.appc.domainmodel.Vnfc, List<Vserver>> entry:map.entrySet()){
org.onap.appc.domainmodel.Vnfc vnfc = entry.getKey();
List<Vserver> vmList = entry.getValue();
vnfc.addVservers(vmList);
}
return new InventoryModel(vnf);
}
private void buildVserverDetailsForInventoryModel(GenerateSequenceInput input, Vnf vnf, Map<Vnfc, List<Vserver>> map) throws APPCException {
if(input.getInventoryInfo().getVnfInfo().getVm().size() < 1) {
throw new APPCException("vnfInfo is missing in the input");
}
for(Vm vm:input.getInventoryInfo().getVnfInfo().getVm()) {
if(StringUtils.isBlank(vm.getVserverId())){
throw new APPCException("vserver-id not found ");
}
Vserver vserver=new Vserver();
vserver.setId(vm.getVserverId());
if(!StringUtils.isBlank(vm.getVnfc().getVnfcName()) &&
!StringUtils.isBlank(vm.getVnfc().getVnfcType())) {
Vnfc vfc = new Vnfc();
vfc.setVnfcName(vm.getVnfc().getVnfcName());
vfc.setVnfcType(vm.getVnfc().getVnfcType());
vserver.setVnfc(vfc);
List<Vserver> vms = map.get(vfc);
if(vms ==null) {
vms = new LinkedList<>();
map.put(vfc,vms);
}
vms.add(vserver);
}
vnf.addVserver(vserver);
}
}
private Vnf createVnfForInventoryModel(GenerateSequenceInput input) {
log.info("Setting VnfId and VnfType values for Vnf Inventory Model ");
Vnf vnf=new Vnf();
vnf.setVnfId(input.getInventoryInfo().getVnfInfo().getVnfId());
vnf.setVnfType(input.getInventoryInfo().getVnfInfo().getVnfType());
vnf.setIdentityUrl(input.getInventoryInfo().getVnfInfo().getIdentityUrl());
return vnf;
}
private RpcResult<GenerateSequenceOutput> buildFailureResponse(String errorMessage){
GenerateSequenceOutputBuilder sequenceGeneratorOutputBuilder=new GenerateSequenceOutputBuilder();
StatusBuilder statusBuilder = new StatusBuilder();
statusBuilder.setCode(401);
statusBuilder.setMessage(errorMessage);
sequenceGeneratorOutputBuilder.setStatus(statusBuilder.build());
return RpcResultBuilder
.<GenerateSequenceOutput> status(true)
.withResult(sequenceGeneratorOutputBuilder.build())
.build();
}
}
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