nokiav2/driver/src/main/java/org/onap/vfc/nfvo/driver/vnfm/svnfm/nokia/onap/core/SelfRegistrationManager.java

   1 /*
   2  * Copyright 2016-2017, Nokia Corporation
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.core;
  18
  19 import com.nokia.cbam.lcn.v32.api.SubscriptionsApi;
  20 import com.nokia.cbam.lcn.v32.model.*;
  21 import org.onap.msb.sdk.discovery.common.RouteException;
  22 import org.onap.msb.sdk.discovery.entity.MicroServiceFullInfo;
  23 import org.onap.msb.sdk.discovery.entity.MicroServiceInfo;
  24 import org.onap.msb.sdk.discovery.entity.Node;
  25 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.SystemFunctions;
  26 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider;
  27 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.DriverProperties;
  28 import org.slf4j.Logger;
  29 import org.springframework.beans.factory.annotation.Autowired;
  30 import org.springframework.beans.factory.annotation.Value;
  31 import org.springframework.stereotype.Component;
  32
  33 import java.util.ArrayList;
  34 import java.util.HashSet;
  35
  36 import static com.nokia.cbam.lcn.v32.model.SubscriptionAuthentication.TypeEnum.NONE;
  37 import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.buildFatalFailure;
  38 import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider.NOKIA_LCN_API_VERSION;
  39 import static org.slf4j.LoggerFactory.getLogger;
  40
  41 /**
  42  * Responsible for registering the driver in the core systems.
  43  */
  44 @Component
  45 public class SelfRegistrationManager {
  46     public static final String DRIVER_VERSION = "v1";
  47     public static final String SERVICE_NAME = "NokiaSVNFM";
  48     // 1 means internal 0 means core :)
  49     public static final String INTERNAL_SERVICE = "1";
  50     public static final String SWAGGER_API_DEFINITION = "self.swagger.json";
  51     private static Logger logger = getLogger(SelfRegistrationManager.class);
  52     private final DriverProperties driverProperties;
  53     private final MsbApiProvider msbApiProvider;
  54     private final CbamRestApiProvider cbamRestApiProvider;
  55
  56     @Value("${driverMsbExternalIp}")
  57     private String driverMsbExternalIp;
  58     @Value("${driverVnfmExternalIp}")
  59     private String driverVnfmExternalIp;
  60     @Value("${server.port}")
  61     private String driverPort;
  62     private volatile boolean ready = false;
  63
  64     @Autowired
  65     SelfRegistrationManager(DriverProperties driverProperties, MsbApiProvider msbApiProvider, CbamRestApiProvider cbamRestApiProvider) {
  66         this.cbamRestApiProvider = cbamRestApiProvider;
  67         this.msbApiProvider = msbApiProvider;
  68         this.driverProperties = driverProperties;
  69     }
  70
  71     /**
  72      * Register the driver in micro-service bus and subscribe to LCNs from CBAM
  73      */
  74     public void register() {
  75         //the order is important (only publish it's existence after the subscription has been created)
  76         subscribeToLcn(driverProperties.getVnfmId());
  77         try {
  78             registerMicroService();
  79         } catch (RuntimeException e) {
  80             deleteSubscription(driverProperties.getVnfmId());
  81             throw e;
  82         }
  83         ready = true;
  84     }
  85
  86     /**
  87      * De-register the VNFM driver from the micro-service bus
  88      */
  89     public void deRegister() {
  90         try {
  91             logger.info("Cancelling micro service registration");
  92             msbApiProvider.getMsbClient().cancelMicroServiceInfo(SERVICE_NAME, DRIVER_VERSION);
  93         } catch (RouteException e) {
  94             //ONAP throws 500 internal server error, but deletes the micro service
  95             try {
  96                 msbApiProvider.getMsbClient().queryMicroServiceInfo(SERVICE_NAME, DRIVER_VERSION);
  97                 //the micro service still exists
  98                 throw buildFatalFailure(logger, "Unable to deRegister Nokia VNFM driver", e);
  99             } catch (RouteException e1) {
 100                 logger.info("Unable to query " + SERVICE_NAME + " from MSB (so the service was successfully deleted)", e1);
 101                 // the micro service was deleted (even though 500 HTTP code was reported)
 102             }
 103         }
 104         deleteSubscription(driverProperties.getVnfmId());
 105     }
 106
 107     /**
 108      * @return the swagger API definition
 109      */
 110     public byte[] getSwaggerApiDefinition() {
 111         return SystemFunctions.systemFunctions().loadFile(SWAGGER_API_DEFINITION);
 112     }
 113
 114     private String getDriverVnfmUrl() {
 115         return "http://" + driverVnfmExternalIp + ":" + driverPort + DriverProperties.BASE_URL;
 116     }
 117
 118     private void deleteSubscription(String vnfmId) {
 119         logger.info("Deleting CBAM LCN subscription");
 120         SubscriptionsApi lcnApi = cbamRestApiProvider.getCbamLcnApi(vnfmId);
 121         try {
 122             String callbackUrl = getDriverVnfmUrl() + DriverProperties.LCN_URL;
 123             for (Subscription subscription : lcnApi.subscriptionsGet(NOKIA_LCN_API_VERSION).blockingFirst()) {
 124                 if (subscription.getCallbackUrl().equals(callbackUrl)) {
 125                     lcnApi.subscriptionsSubscriptionIdDelete(subscription.getId(), NOKIA_LCN_API_VERSION);
 126                 }
 127             }
 128         } catch (Exception e) {
 129             throw buildFatalFailure(logger, "Unable to delete CBAM LCN subscription", e);
 130         }
 131     }
 132
 133     private MicroServiceFullInfo registerMicroService() {
 134         logger.info("Registering micro service");
 135         MicroServiceInfo microServiceInfo = new MicroServiceInfo();
 136         microServiceInfo.setUrl(DriverProperties.BASE_URL);
 137         //the PATH should not be set
 138         microServiceInfo.setProtocol("REST");
 139         microServiceInfo.setVisualRange(INTERNAL_SERVICE);
 140         microServiceInfo.setServiceName(SERVICE_NAME);
 141         microServiceInfo.setVersion(DRIVER_VERSION);
 142         microServiceInfo.setEnable_ssl(false);
 143         Node node = new Node();
 144         microServiceInfo.setNodes(new HashSet<>());
 145         microServiceInfo.getNodes().add(node);
 146         node.setIp(driverMsbExternalIp);
 147         node.setPort(driverPort);
 148         node.setTtl("0");
 149         try {
 150             return msbApiProvider.getMsbClient().registerMicroServiceInfo(microServiceInfo);
 151         } catch (RouteException e) {
 152             throw buildFatalFailure(logger, "Unable to register Nokia VNFM driver", e);
 153         }
 154     }
 155
 156     private void subscribeToLcn(String vnfmId) {
 157         String callbackUrl = getDriverVnfmUrl() + DriverProperties.LCN_URL;
 158         logger.info("Subscribing to CBAM LCN {} with callback to {}", driverProperties.getCbamLcnUrl(), callbackUrl);
 159         SubscriptionsApi lcnApi = cbamRestApiProvider.getCbamLcnApi(vnfmId);
 160         try {
 161             for (Subscription subscription : lcnApi.subscriptionsGet(NOKIA_LCN_API_VERSION).blockingFirst()) {
 162                 if (subscription.getCallbackUrl().equals(callbackUrl)) {
 163                     return;
 164                 }
 165             }
 166             CreateSubscriptionRequest request = new CreateSubscriptionRequest();
 167             request.setFilter(new SubscriptionFilter());
 168             request.getFilter().setNotificationTypes(new ArrayList<>());
 169             request.getFilter().getNotificationTypes().add(VnfNotificationType.VNFLIFECYCLECHANGENOTIFICATION);
 170             request.setCallbackUrl(callbackUrl);
 171             request.getFilter().addOperationTypesItem(OperationType.HEAL);
 172             request.getFilter().addOperationTypesItem(OperationType.INSTANTIATE);
 173             request.getFilter().addOperationTypesItem(OperationType.SCALE);
 174             request.getFilter().addOperationTypesItem(OperationType.TERMINATE);
 175             SubscriptionAuthentication subscriptionAuthentication = new SubscriptionAuthentication();
 176             subscriptionAuthentication.setType(NONE);
 177             request.setAuthentication(subscriptionAuthentication);
 178             lcnApi.subscriptionsPost(request, NOKIA_LCN_API_VERSION);
 179         } catch (Exception e) {
 180             throw buildFatalFailure(logger, "Unable to subscribe to CBAM LCN", e);
 181         }
 182     }
 183
 184     /**
 185      * @return is the component ready to serve requests
 186      */
 187     public boolean isReady() {
 188         return ready;
 189     }
 190 }