ready for review

hapi-fhir-base/src/main/java/ca/uhn/fhir/util/MetaUtil.java

@@ -36,8 +36,33 @@ public class MetaUtil {
 	}
 
 	public static String getSource(FhirContext theContext, IBaseMetaType theMeta) {
-		BaseRuntimeElementCompositeDefinition<?> elementDef = (BaseRuntimeElementCompositeDefinition<?>) theContext.getElementDefinition(theMeta.getClass());
+		if (theContext.getVersion().getVersion().isEqualOrNewerThan(FhirVersionEnum.R4)) {
+			return getSourceR4Plus(theContext, theMeta);
+		} else if (theContext.getVersion().getVersion().equals(FhirVersionEnum.DSTU3)) {
+			return getSourceDstu3((IBaseHasExtensions) theMeta);
+		} else {
+			throw new UnsupportedOperationException(MetaUtil.class.getSimpleName() + ".getSource() not supported on FHIR Version " + theContext.getVersion().getVersion());
+		}
+	}
+
+	private static String getSourceDstu3(IBaseHasExtensions theMeta) {
+		IBaseHasExtensions metaWithExtensions = theMeta;
+		List<? extends IBaseExtension<?, ?>> extensions = metaWithExtensions.getExtension();
+		for (IBaseExtension extension : extensions) {
+			if (Constants.EXT_META_SOURCE.equals(extension.getUrl())) {
+				IPrimitiveType<String> value = (IPrimitiveType<String>) extension.getValue();
+				return value.getValueAsString();
+			}
+		}
+		return null;
+	}
+
+	private static String getSourceR4Plus(FhirContext theFhirContext, IBaseMetaType theMeta) {
+		BaseRuntimeElementCompositeDefinition<?> elementDef = (BaseRuntimeElementCompositeDefinition<?>) theFhirContext.getElementDefinition(theMeta.getClass());
 		BaseRuntimeChildDefinition sourceChild = elementDef.getChildByName("source");
+		if (sourceChild == null) {
+			return null;
+		}
 		List<IBase> sourceValues = sourceChild.getAccessor().getValues(theMeta);
 		String retVal = null;
 		if (sourceValues.size() > 0) {
@@ -66,6 +91,8 @@ public class MetaUtil {
 			IPrimitiveType<String> value = (IPrimitiveType<String>) theContext.getElementDefinition("uri").newInstance();
 			value.setValue(theValue);
 			sourceExtension.setValue(value);
+		} else  {
+			throw new UnsupportedOperationException(MetaUtil.class.getSimpleName() + ".setSource() not supported on FHIR Version " + theContext.getVersion().getVersion());
 		}
 	}
 

hapi-fhir-jpaserver-base/src/test/java/ca/uhn/fhir/jpa/subscription/resthook/RestHookTestDstu3Test.java

@@ -18,6 +18,7 @@ import ca.uhn.fhir.rest.server.IResourceProvider;
 import ca.uhn.fhir.rest.server.RestfulServer;
 import ca.uhn.fhir.rest.server.exceptions.UnprocessableEntityException;
 import ca.uhn.fhir.test.utilities.JettyUtil;
+import ca.uhn.fhir.util.MetaUtil;
 import com.google.common.collect.Lists;
 import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.servlet.ServletContextHandler;
@@ -242,6 +243,33 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		assertEquals(Constants.CT_FHIR_JSON_NEW, ourContentTypes.get(0));
 	}
 
+
+	@Test
+	public void testRestHookSubscriptionSource() throws Exception {
+		String payload = "application/fhir+json";
+
+		String source = "foosource";
+		String criteria = "Observation?_source=" + source;
+
+		Subscription subscription = newSubscription(criteria, payload, ourListenerServerBase, null);
+		MethodOutcome methodOutcome = ourClient.create().resource(subscription).execute();
+		Subscription savedSub = (Subscription) methodOutcome.getResource();
+		assertInMemoryTag(savedSub);
+		mySubscriptionIds.add(methodOutcome.getId());
+
+		waitForQueueToDrain();
+
+		Observation observation = new Observation();
+		MetaUtil.setSource(myFhirCtx, observation, source);
+		ourClient.create().resource(observation).execute();
+
+		// Should see 1 subscription notification
+		waitForQueueToDrain();
+		waitForSize(0, ourCreatedObservations);
+		waitForSize(1, ourUpdatedObservations);
+		assertEquals(Constants.CT_FHIR_JSON_NEW, ourContentTypes.get(0));
+	}
+
 	@Test
 	public void testRestHookSubscriptionApplicationJson() throws Exception {
 		String payload = "application/json";
@@ -474,11 +502,17 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		assertEquals("In-memory", tag.getDisplay());
 
 		// Wait for subscription to be moved to active
-		await().until(()-> Subscription.SubscriptionStatus.ACTIVE.equals(ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute().getStatus()));
+		await().until(() -> Subscription.SubscriptionStatus.ACTIVE.equals(ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute().getStatus()));
 
 		Subscription subscriptionActivated = ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute();
 		assertEquals(Subscription.SubscriptionStatus.ACTIVE, subscriptionActivated.getStatus());
-		tags = subscriptionActivated.getMeta().getTag();
+		assertInMemoryTag(subscriptionActivated);
+	}
+
+	private void assertInMemoryTag(Subscription theSubscription) {
+		List<Coding> tags;
+		Coding tag;
+		tags = theSubscription.getMeta().getTag();
 		assertEquals(1, tags.size());
 		tag = tags.get(0);
 		assertEquals(JpaConstants.EXT_SUBSCRIPTION_MATCHING_STRATEGY, tag.getSystem());
@@ -501,7 +535,7 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 		assertEquals("Database", tag.getDisplay());
 
 		// Wait for subscription to be moved to active
-		await().until(()-> Subscription.SubscriptionStatus.ACTIVE.equals(ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute().getStatus()));
+		await().until(() -> Subscription.SubscriptionStatus.ACTIVE.equals(ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute().getStatus()));
 
 		Subscription subscription = ourClient.read().resource(Subscription.class).withId(subscriptionId.toUnqualifiedVersionless()).execute();
 		assertEquals(Subscription.SubscriptionStatus.ACTIVE, subscription.getStatus());
@@ -624,9 +658,9 @@ public class RestHookTestDstu3Test extends BaseResourceProviderDstu3Test {
 
 		ourListenerServer.setHandler(proxyHandler);
 		JettyUtil.startServer(ourListenerServer);
-        ourListenerPort = JettyUtil.getPortForStartedServer(ourListenerServer);
+		ourListenerPort = JettyUtil.getPortForStartedServer(ourListenerServer);
-        ourListenerServerBase = "http://localhost:" + ourListenerPort + "/fhir/context";
+		ourListenerServerBase = "http://localhost:" + ourListenerPort + "/fhir/context";
-        ourNotificationListenerServer = "http://localhost:" + ourListenerPort + "/fhir/subscription";
+		ourNotificationListenerServer = "http://localhost:" + ourListenerPort + "/fhir/subscription";
 	}
 
 	@AfterClass

hapi-fhir-structures-dstu3/src/test/java/ca/uhn/fhir/util/MetaUtilTest.java

@@ -0,0 +1,19 @@
+package ca.uhn.fhir.util;
+
+import ca.uhn.fhir.context.FhirContext;
+import org.hl7.fhir.dstu3.model.Observation;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class MetaUtilTest {
+	FhirContext ourFhirContext = FhirContext.forDstu3();
+
+	@Test
+	public void testSetGetDstu3() {
+		String source = "testSource";
+		Observation observation = new Observation();
+		MetaUtil.setSource(ourFhirContext, observation, source);
+		assertEquals(source, MetaUtil.getSource(ourFhirContext, observation.getMeta()));
+	}
+}