Allows Vert.x HTTP Options customization

extensions/vertx-http/deployment/src/main/java/io/quarkus/vertx/http/deployment/VertxHttpProcessor.java

@@ -18,6 +18,7 @@
 import io.quarkus.arc.deployment.AdditionalBeanBuildItem;
 import io.quarkus.arc.deployment.BeanContainerBuildItem;
 import io.quarkus.arc.deployment.SyntheticBeanBuildItem;
+import io.quarkus.arc.deployment.UnremovableBeanBuildItem;
 import io.quarkus.arc.processor.BuiltinScope;
 import io.quarkus.bootstrap.classloading.ClassPathElement;
 import io.quarkus.bootstrap.classloading.QuarkusClassLoader;
@@ -46,6 +47,7 @@
 import io.quarkus.runtime.shutdown.ShutdownConfig;
 import io.quarkus.vertx.core.deployment.CoreVertxBuildItem;
 import io.quarkus.vertx.core.deployment.EventLoopCountBuildItem;
+import io.quarkus.vertx.http.HttpServerOptionsCustomizer;
 import io.quarkus.vertx.http.deployment.devmode.HttpRemoteDevClientProvider;
 import io.quarkus.vertx.http.deployment.devmode.NotFoundPageDisplayableEndpointBuildItem;
 import io.quarkus.vertx.http.deployment.spi.FrameworkEndpointsBuildItem;
@@ -113,6 +115,11 @@ AdditionalBeanBuildItem additionalBeans() {
                 .build();
     }
 
+    @BuildStep
+    UnremovableBeanBuildItem shouldNotRemoveHttpServerOptionsCustomizers() {
+        return UnremovableBeanBuildItem.beanTypes(HttpServerOptionsCustomizer.class);
+    }
+
     /**
      * Workaround for https://github.com/quarkusio/quarkus/issues/4720 by filtering Vertx multiple instance warning in dev
      * mode.

extensions/vertx-http/deployment/src/test/java/io/quarkus/vertx/http/customizers/HttpServerOptionsCustomizerTest.java

@@ -0,0 +1,69 @@
+package io.quarkus.vertx.http.customizers;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import javax.enterprise.context.ApplicationScoped;
+import javax.enterprise.event.Observes;
+import javax.inject.Inject;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusUnitTest;
+import io.quarkus.vertx.http.HttpServerOptionsCustomizer;
+import io.restassured.RestAssured;
+import io.vertx.core.http.HttpServerOptions;
+import io.vertx.mutiny.ext.web.Router;
+
+public class HttpServerOptionsCustomizerTest {
+
+    @RegisterExtension
+    static final QuarkusUnitTest config = new QuarkusUnitTest()
+            .withApplicationRoot((jar) -> jar
+                    .addClasses(MyBean.class, MyCustomizer.class));
+
+    @Inject
+    MyCustomizer customizer;
+
+    @Test
+    void test() {
+        Assertions.assertThat(customizer.count()).isEqualTo(1);
+        Assertions.assertThat(RestAssured.get("http://localhost:9998").body().asString()).isEqualTo("hello");
+    }
+
+    @ApplicationScoped
+    public static class MyBean {
+
+        public void init(@Observes Router router) {
+            router.get().handler(rc -> rc.endAndForget("hello"));
+        }
+
+    }
+
+    @ApplicationScoped
+    public static class MyCustomizer implements HttpServerOptionsCustomizer {
+
+        AtomicInteger count = new AtomicInteger();
+
+        @Override
+        public void customizeHttpServer(HttpServerOptions options) {
+            count.incrementAndGet();
+            options.setPort(9998);
+        }
+
+        @Override
+        public void customizeHttpsServer(HttpServerOptions options) {
+            count.incrementAndGet();
+        }
+
+        @Override
+        public void customizeDomainSocketServer(HttpServerOptions options) {
+            count.incrementAndGet();
+        }
+
+        public int count() {
+            return count.get();
+        }
+    }
+}

extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/HttpServerOptionsCustomizer.java

@@ -0,0 +1,37 @@
+package io.quarkus.vertx.http;
+
+import io.vertx.core.http.HttpServerOptions;
+
+/**
+ * Interface exposed by beans willing to customizing the HTTP server options.
+ * <p>
+ * This interface is composed of three methods allowing the customization of the different servers: HTTP, HTTPS and
+ * domain socket.
+ * <p>
+ * The passed {@link HttpServerOptions} must be customized in the body of the implementation. The default implementations
+ * are no-op.
+ */
+public interface HttpServerOptionsCustomizer {
+
+    /**
+     * Allows customizing the HTTP server options.
+     */
+    default void customizeHttpServer(HttpServerOptions options) {
+        // NO-OP
+    }
+
+    /**
+     * Allows customizing the HTTPS server options.
+     */
+    default void customizeHttpsServer(HttpServerOptions options) {
+        // NO-OP
+    }
+
+    /**
+     * Allows customizing the server listening on a domain socket if any.
+     */
+    default void customizeDomainSocketServer(HttpServerOptions options) {
+        // NO-OP
+    }
+
+}

extensions/vertx-http/runtime/src/main/java/io/quarkus/vertx/http/runtime/VertxHttpRecorder.java

@@ -47,6 +47,7 @@
 import io.netty.handler.codec.http.HttpHeaderNames;
 import io.netty.handler.codec.http.HttpResponseStatus;
 import io.quarkus.arc.Arc;
+import io.quarkus.arc.InstanceHandle;
 import io.quarkus.arc.runtime.BeanContainer;
 import io.quarkus.bootstrap.runner.Timing;
 import io.quarkus.credentials.CredentialsProvider;
@@ -69,6 +70,7 @@
 import io.quarkus.runtime.util.ClassPathUtils;
 import io.quarkus.vertx.core.runtime.VertxCoreRecorder;
 import io.quarkus.vertx.core.runtime.config.VertxConfiguration;
+import io.quarkus.vertx.http.HttpServerOptionsCustomizer;
 import io.quarkus.vertx.http.runtime.HttpConfiguration.InsecureRequests;
 import io.quarkus.vertx.http.runtime.devmode.RemoteSyncHandler;
 import io.quarkus.vertx.http.runtime.devmode.VertxHttpHotReplacementSetup;
@@ -125,13 +127,19 @@ public class VertxHttpRecorder {
 
     public static final String MAX_REQUEST_SIZE_KEY = "io.quarkus.max-request-size";
 
-    /** Order mark for route with priority over the default route (add an offset from this mark) **/
+    /**
+     * Order mark for route with priority over the default route (add an offset from this mark)
+     **/
     public static final int BEFORE_DEFAULT_ROUTE_ORDER_MARK = 1_000;
 
-    /** Default route order (i.e. Static Resources, Servlet) **/
+    /**
+     * Default route order (i.e. Static Resources, Servlet)
+     **/
     public static final int DEFAULT_ROUTE_ORDER = 10_000;
 
-    /** Order mark for route without priority over the default route (add an offset from this mark) **/
+    /**
+     * Order mark for route without priority over the default route (add an offset from this mark)
+     **/
     public static final int AFTER_DEFAULT_ROUTE_ORDER_MARK = 20_000;
 
     private static final Logger LOGGER = Logger.getLogger(VertxHttpRecorder.class.getName());
@@ -629,6 +637,7 @@ private void warnIfProxyAddressForwardingAllowedWithMultipleHeaders(HttpConfigur
     private static void doServerStart(Vertx vertx, HttpBuildTimeConfig httpBuildTimeConfig,
             HttpConfiguration httpConfiguration, LaunchMode launchMode,
             Supplier<Integer> eventLoops, List<String> websocketSubProtocols, boolean auxiliaryApplication) throws IOException {
+
         // Http server configuration
         HttpServerOptions httpServerOptions = createHttpServerOptions(httpBuildTimeConfig, httpConfiguration, launchMode,
                 websocketSubProtocols);
@@ -637,6 +646,24 @@ private static void doServerStart(Vertx vertx, HttpBuildTimeConfig httpBuildTime
         HttpServerOptions sslConfig = createSslOptions(httpBuildTimeConfig, httpConfiguration, launchMode,
                 websocketSubProtocols);
 
+        // Customize
+        if (Arc.container() != null) {
+            List<InstanceHandle<HttpServerOptionsCustomizer>> instances = Arc.container()
+                    .listAll(HttpServerOptionsCustomizer.class);
+            for (InstanceHandle<HttpServerOptionsCustomizer> instance : instances) {
+                HttpServerOptionsCustomizer customizer = instance.get();
+                if (httpServerOptions != null) {
+                    customizer.customizeHttpServer(httpServerOptions);
+                }
+                if (sslConfig != null) {
+                    customizer.customizeHttpsServer(sslConfig);
+                }
+                if (domainSocketOptions != null) {
+                    customizer.customizeDomainSocketServer(domainSocketOptions);
+                }
+            }
+        }
+
         if (httpConfiguration.insecureRequests != HttpConfiguration.InsecureRequests.ENABLED && sslConfig == null) {
             throw new IllegalStateException("Cannot set quarkus.http.redirect-insecure-requests without enabling SSL.");
         }