Merge pull request #10165 from geoand/#10164

Warn when a spring-web class is not annotated with @RestController

extensions/spring-web/deployment/pom.xml

@@ -41,6 +41,11 @@
             <artifactId>rest-assured</artifactId>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>

extensions/spring-web/deployment/src/main/java/io/quarkus/spring/web/deployment/SpringWebProcessor.java

@@ -25,6 +25,7 @@
 import org.jboss.jandex.IndexView;
 import org.jboss.jandex.MethodInfo;
 import org.jboss.jandex.Type;
+import org.jboss.logging.Logger;
 import org.jboss.resteasy.core.MediaTypeMap;
 import org.jboss.resteasy.plugins.server.servlet.ResteasyContextParameters;
 import org.jboss.resteasy.spi.ResteasyDeployment;
@@ -63,6 +64,8 @@
 
 public class SpringWebProcessor {
 
+    private static final Logger LOGGER = Logger.getLogger(SpringWebProcessor.class.getName());
+
     private static final DotName REST_CONTROLLER_ANNOTATION = DotName
             .createSimple("org.springframework.web.bind.annotation.RestController");
 
@@ -162,6 +165,8 @@ public void process(BeanArchiveIndexBuildItem beanArchiveIndexBuildItem,
             BuildProducer<ServletInitParamBuildItem> initParamProducer,
             BuildProducer<ResteasyDeploymentCustomizerBuildItem> deploymentCustomizerProducer) {
 
+        validateControllers(beanArchiveIndexBuildItem);
+
         final IndexView index = beanArchiveIndexBuildItem.getIndex();
         final Collection<AnnotationInstance> annotations = index.getAnnotations(REST_CONTROLLER_ANNOTATION);
         if (annotations.isEmpty()) {
@@ -190,6 +195,35 @@ public void accept(ResteasyDeployment resteasyDeployment) {
         reflectiveClass.produce(new ReflectiveClassBuildItem(true, false, false, SpringResourceBuilder.class.getName()));
     }
 
+    /**
+     * Make sure the controllers have the proper annotation and warn if not
+     */
+    private void validateControllers(BeanArchiveIndexBuildItem beanArchiveIndexBuildItem) {
+        Collection<AnnotationInstance> annotations = beanArchiveIndexBuildItem.getIndex().getAnnotations(REQUEST_MAPPING);
+        Set<DotName> classesWithoutRestController = new HashSet<>();
+        for (AnnotationInstance annotation : annotations) {
+            ClassInfo targetClass;
+            if (annotation.target().kind() == AnnotationTarget.Kind.CLASS) {
+                targetClass = annotation.target().asClass();
+            } else if (annotation.target().kind() == AnnotationTarget.Kind.METHOD) {
+                targetClass = annotation.target().asMethod().declaringClass();
+            } else {
+                continue;
+            }
+
+            if (targetClass.classAnnotation(REST_CONTROLLER_ANNOTATION) == null) {
+                classesWithoutRestController.add(targetClass.name());
+            }
+        }
+
+        if (!classesWithoutRestController.isEmpty()) {
+            for (DotName dotName : classesWithoutRestController) {
+                LOGGER.warn("Class '" + dotName
+                        + "' uses '@RequestMapping' but was not annotated with '@RestContoller' and will therefore be ignored.");
+            }
+        }
+    }
+
     @BuildStep(onlyIf = IsDevelopment.class)
     @Record(STATIC_INIT)
     public void registerWithDevModeNotFoundMapper(BeanArchiveIndexBuildItem beanArchiveIndexBuildItem,

extensions/spring-web/deployment/src/test/java/io/quarkus/spring/web/test/MissingRestControllerTest.java

@@ -0,0 +1,63 @@
+package io.quarkus.spring.web.test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.List;
+import java.util.logging.LogRecord;
+
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.quarkus.test.ProdBuildResults;
+import io.quarkus.test.ProdModeTestResults;
+import io.quarkus.test.QuarkusProdModeTest;
+
+public class MissingRestControllerTest {
+
+    @RegisterExtension
+    static final QuarkusProdModeTest config = new QuarkusProdModeTest()
+            .setArchiveProducer(() -> ShrinkWrap.create(JavaArchive.class)
+                    .addClasses(NonAnnotatedController.class, ProperController.class))
+            .setApplicationName("missing-rest-controller")
+            .setApplicationVersion("0.1-SNAPSHOT")
+            .setLogRecordPredicate(r -> "io.quarkus.spring.web.deployment.SpringWebProcessor".equals(r.getLoggerName()));
+
+    @ProdBuildResults
+    private ProdModeTestResults prodModeTestResults;
+
+    @Test
+    public void testBuildLogs() {
+        List<LogRecord> buildLogRecords = prodModeTestResults.getRetainedBuildLogRecords();
+        assertThat(buildLogRecords).isNotEmpty();
+        assertThat(buildLogRecords).hasOnlyOneElementSatisfying(r -> {
+            assertThat(r.getMessage())
+                    .contains("but was not annotated with")
+                    .contains(NonAnnotatedController.class.getName())
+                    .doesNotContain(ProperController.class.getName());
+        });
+    }
+
+    @RequestMapping("/non")
+    public static class NonAnnotatedController {
+
+        @GetMapping("/hello")
+        public String greet() {
+            return "hello";
+        }
+    }
+
+    @RestController
+    @RequestMapping("/proper")
+    public static class ProperController {
+
+        @GetMapping("/hello")
+        public String greet() {
+            return "hello";
+        }
+    }
+}