001package ca.uhn.fhir.jpa.subscription.match.deliver;
002
003/*-
004 * #%L
005 * HAPI FHIR Subscription Server
006 * %%
007 * Copyright (C) 2014 - 2022 Smile CDR, Inc.
008 * %%
009 * Licensed under the Apache License, Version 2.0 (the "License");
010 * you may not use this file except in compliance with the License.
011 * You may obtain a copy of the License at
012 *
013 *      http://www.apache.org/licenses/LICENSE-2.0
014 *
015 * Unless required by applicable law or agreed to in writing, software
016 * distributed under the License is distributed on an "AS IS" BASIS,
017 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
018 * See the License for the specific language governing permissions and
019 * limitations under the License.
020 * #L%
021 */
022
023import ca.uhn.fhir.i18n.Msg;
024import ca.uhn.fhir.context.FhirContext;
025import ca.uhn.fhir.i18n.Msg;
026import ca.uhn.fhir.interceptor.api.HookParams;
027import ca.uhn.fhir.interceptor.api.IInterceptorBroadcaster;
028import ca.uhn.fhir.interceptor.api.Pointcut;
029import ca.uhn.fhir.jpa.subscription.match.registry.ActiveSubscription;
030import ca.uhn.fhir.jpa.subscription.match.registry.SubscriptionRegistry;
031import ca.uhn.fhir.jpa.subscription.model.CanonicalSubscription;
032import ca.uhn.fhir.jpa.subscription.model.ResourceDeliveryMessage;
033import com.google.common.annotations.VisibleForTesting;
034import org.slf4j.Logger;
035import org.slf4j.LoggerFactory;
036import org.springframework.beans.factory.annotation.Autowired;
037import org.springframework.messaging.Message;
038import org.springframework.messaging.MessageHandler;
039import org.springframework.messaging.MessagingException;
040
041public abstract class BaseSubscriptionDeliverySubscriber implements MessageHandler {
042        private static final Logger ourLog = LoggerFactory.getLogger(BaseSubscriptionDeliverySubscriber.class);
043
044        @Autowired
045        protected FhirContext myFhirContext;
046        @Autowired
047        protected SubscriptionRegistry mySubscriptionRegistry;
048        @Autowired
049        private IInterceptorBroadcaster myInterceptorBroadcaster;
050
051        @Override
052        public void handleMessage(Message theMessage) throws MessagingException {
053                if (!(theMessage.getPayload() instanceof ResourceDeliveryMessage)) {
054                        ourLog.warn("Unexpected payload type: {}", theMessage.getPayload());
055                        return;
056                }
057
058                ResourceDeliveryMessage msg = (ResourceDeliveryMessage) theMessage.getPayload();
059                String subscriptionId = msg.getSubscriptionId(myFhirContext);
060                if (subscriptionId == null) {
061                        ourLog.warn("Subscription has no ID, ignoring");
062                        return;
063                }
064
065                ActiveSubscription updatedSubscription = mySubscriptionRegistry.get(msg.getSubscription().getIdElement(myFhirContext).getIdPart());
066                if (updatedSubscription != null) {
067                        msg.setSubscription(updatedSubscription.getSubscription());
068                }
069
070                try {
071
072                        // Interceptor call: SUBSCRIPTION_BEFORE_DELIVERY
073                        HookParams params = new HookParams()
074                                .add(ResourceDeliveryMessage.class, msg)
075                                .add(CanonicalSubscription.class, msg.getSubscription());
076                        if (!myInterceptorBroadcaster.callHooks(Pointcut.SUBSCRIPTION_BEFORE_DELIVERY, params)) {
077                                return;
078                        }
079
080                        handleMessage(msg);
081
082                        // Interceptor call: SUBSCRIPTION_AFTER_DELIVERY
083                        myInterceptorBroadcaster.callHooks(Pointcut.SUBSCRIPTION_AFTER_DELIVERY, params);
084
085                } catch (Exception e) {
086
087                        String errorMsg = "Failure handling subscription payload for subscription: " + subscriptionId;
088                        ourLog.error(errorMsg, e);
089
090                        // Interceptor call: SUBSCRIPTION_AFTER_DELIVERY
091                        HookParams hookParams = new HookParams()
092                                .add(ResourceDeliveryMessage.class, msg)
093                                .add(Exception.class, e);
094                        if (!myInterceptorBroadcaster.callHooks(Pointcut.SUBSCRIPTION_AFTER_DELIVERY_FAILED, hookParams)) {
095                                return;
096                        }
097
098                        throw new MessagingException(theMessage, Msg.code(2) + errorMsg, e);
099                }
100        }
101
102        public abstract void handleMessage(ResourceDeliveryMessage theMessage) throws Exception;
103
104        @VisibleForTesting
105        public void setFhirContextForUnitTest(FhirContext theCtx) {
106                myFhirContext = theCtx;
107        }
108
109        @VisibleForTesting
110        public void setInterceptorBroadcasterForUnitTest(IInterceptorBroadcaster theInterceptorBroadcaster) {
111                myInterceptorBroadcaster = theInterceptorBroadcaster;
112        }
113
114        @VisibleForTesting
115        public void setSubscriptionRegistryForUnitTest(SubscriptionRegistry theSubscriptionRegistry) {
116                mySubscriptionRegistry = theSubscriptionRegistry;
117        }
118
119        public IInterceptorBroadcaster getInterceptorBroadcaster() {
120                return myInterceptorBroadcaster;
121        }
122}