1 files changed, 137 insertions, 0 deletions
diff --git a/so-etsi-sol003-adapter-pkgm/so-etsi-sol003-adapter-pkgm-service/src/main/java/org/onap/so/adapters/etsisol003adapter/pkgm/subscriptionmgmt/NotificationManager.java b/so-etsi-sol003-adapter-pkgm/so-etsi-sol003-adapter-pkgm-service/src/main/java/org/onap/so/adapters/etsisol003adapter/pkgm/subscriptionmgmt/NotificationManager.java
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+++ b/so-etsi-sol003-adapter-pkgm/so-etsi-sol003-adapter-pkgm-service/src/main/java/org/onap/so/adapters/etsisol003adapter/pkgm/subscriptionmgmt/NotificationManager.java
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+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2020 Nordix Foundation.
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.so.adapters.etsisol003adapter.pkgm.subscriptionmgmt;
+
+import static org.slf4j.LoggerFactory.getLogger;
+import java.util.List;
+import java.util.Optional;
+import org.onap.so.adapters.etsisol003adapter.etsicatalog.notification.model.PkgChangeNotification;
+import org.onap.so.adapters.etsisol003adapter.etsicatalog.notification.model.PkgOnboardingNotification;
+import org.onap.so.adapters.etsisol003adapter.pkgm.extclients.vnfm.notification.model.VnfPackageChangeNotification;
+import org.onap.so.adapters.etsisol003adapter.pkgm.extclients.vnfm.notification.model.VnfPackageOnboardingNotification;
+import org.onap.so.adapters.etsisol003adapter.pkgm.model.PkgmSubscriptionRequest;
+import org.onap.so.adapters.etsisol003adapter.pkgm.model.SubscriptionsAuthentication;
+import org.onap.so.adapters.etsisol003adapter.pkgm.model.SubscriptionsAuthentication.AuthTypeEnum;
+import org.onap.so.adapters.etsisol003adapter.pkgm.rest.exceptions.AuthenticationTypeNotSupportedException;
+import org.onap.so.adapters.etsisol003adapter.pkgm.rest.exceptions.ConversionFailedException;
+import org.onap.so.adapters.etsisol003adapter.pkgm.rest.exceptions.NotificationTypeNotSupportedException;
+import org.onap.so.adapters.etsisol003adapter.pkgm.rest.exceptions.SubscriptionNotFoundException;
+import org.slf4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.convert.ConversionService;
+import org.springframework.stereotype.Service;
+
+/**
+ * Manages package management subscription notifications to the VNFMs
+ *
+ * @author Andrew Lamb (andrew.a.lamb@est.tech)
+ *
+ */
+@Service
+public class NotificationManager {
+
+    private static final Logger logger = getLogger(NotificationManager.class);
+    private final ConversionService conversionService;
+    private final SubscriptionManager subscriptionManager;
+    private final NotificationServiceProviderFactory notificationServiceProviderFactory;
+
+    @Autowired
+    public NotificationManager(final SubscriptionManager subscriptionManager, final ConversionService conversionService,
+            final NotificationServiceProviderFactory notificationServiceProviderFactory) {
+        this.subscriptionManager = subscriptionManager;
+        this.conversionService = conversionService;
+        this.notificationServiceProviderFactory = notificationServiceProviderFactory;
+    }
+
+    /**
+     * Process a subscription notification. Checks for a subscription request stored in the adapter and if there is, it
+     * sends the notification to the subscribed vnfm.
+     * 
+     * @param notification the notification to send to the vnfm
+     * @param subscriptionId the id of the subscription request
+     * @return true if the notification is successfully sent
+     */
+    public boolean processSubscriptionNotification(final Object notification, final String subscriptionId) {
+        final Optional<PkgmSubscriptionRequest> optionalSubscription =
+                subscriptionManager.getSubscriptionRequest(subscriptionId);
+        if (optionalSubscription.isPresent()) {
+            final PkgmSubscriptionRequest subscriptionRequest = optionalSubscription.get();
+            return notifyVnfm(subscriptionRequest, notification);
+        }
+        final String errorMessage = "No subscription found with subscriptionId " + subscriptionId
+                + ". Unable to forward notification to subscriber.";
+        logger.error(errorMessage);
+        throw new SubscriptionNotFoundException(errorMessage);
+    }
+
+    private boolean notifyVnfm(final PkgmSubscriptionRequest subscriptionRequest, final Object notification) {
+        if (!(notification instanceof PkgOnboardingNotification) && !(notification instanceof PkgChangeNotification)) {
+            final String errorMessage =
+                    "An error occurred.  Notification type not supported for: " + notification.getClass();
+            logger.error(errorMessage);
+            throw new NotificationTypeNotSupportedException(errorMessage);
+        }
+
+        final SubscriptionsAuthentication subscriptionsAuthentication = subscriptionRequest.getAuthentication();
+        final AuthTypeEnum authType = getAuthType(subscriptionsAuthentication.getAuthType());
+        final NotificationServiceProvider sender = notificationServiceProviderFactory.getNotificationSender(authType);
+
+        final Object vnfmNotificationObject = convertEtsiCatalogNotification(notification);
+
+        if (sender.send(vnfmNotificationObject, subscriptionsAuthentication, subscriptionRequest.getCallbackUri())) {
+            logger.info("Notification delivered successfully {}", notification);
+            return true;
+        }
+
+        logger.error("Failed to deliver notification.");
+        return false;
+    }
+
+    private SubscriptionsAuthentication.AuthTypeEnum getAuthType(final List<AuthTypeEnum> authTypes) {
+        if (authTypes.contains(SubscriptionsAuthentication.AuthTypeEnum.TLS_CERT)) {
+            return SubscriptionsAuthentication.AuthTypeEnum.TLS_CERT;
+        }
+        if (authTypes.contains(SubscriptionsAuthentication.AuthTypeEnum.OAUTH2_CLIENT_CREDENTIALS)) {
+            return SubscriptionsAuthentication.AuthTypeEnum.OAUTH2_CLIENT_CREDENTIALS;
+        }
+        if (authTypes.contains(SubscriptionsAuthentication.AuthTypeEnum.BASIC)) {
+            return SubscriptionsAuthentication.AuthTypeEnum.BASIC;
+        }
+        final String errorMessage =
+                "An error occurred. No supported authentication type provided in subscription request.";
+        logger.error(errorMessage);
+        throw new AuthenticationTypeNotSupportedException(errorMessage);
+    }
+
+    private Object convertEtsiCatalogNotification(final Object etsiCatalogNotification) {
+        logger.info("Converting notification:\n {}", etsiCatalogNotification);
+        if (conversionService.canConvert(etsiCatalogNotification.getClass(), VnfPackageOnboardingNotification.class)) {
+            return conversionService.convert(etsiCatalogNotification, VnfPackageOnboardingNotification.class);
+        } else if (conversionService.canConvert(etsiCatalogNotification.getClass(),
+                VnfPackageChangeNotification.class)) {
+            return conversionService.convert(etsiCatalogNotification, VnfPackageChangeNotification.class);
+        }
+        final String errorMessage = "An error occurred. Unable to convert provided notification object.";
+        logger.error(errorMessage + "\n" + etsiCatalogNotification);
+        throw new ConversionFailedException(errorMessage);
+    }
+
+}