Lambda function serialization

core/deployment/src/main/java/io/quarkus/deployment/steps/NativeImageAutoFeatureStep.java

@@ -94,6 +94,7 @@ public class NativeImageAutoFeatureStep {
     static final String RUNTIME_REFLECTION = RuntimeReflection.class.getName();
     static final String JNI_RUNTIME_ACCESS = "com.oracle.svm.core.jni.JNIRuntimeAccess";
     static final String BEFORE_ANALYSIS_ACCESS = Feature.BeforeAnalysisAccess.class.getName();
+    static final String DURING_SETUP_ACCESS = Feature.DuringSetupAccess.class.getName();
     static final String DYNAMIC_PROXY_REGISTRY = "com.oracle.svm.core.jdk.proxy.DynamicProxyRegistry";
     static final String LEGACY_LOCALIZATION_FEATURE = "com.oracle.svm.core.jdk.LocalizationFeature";
     static final String LOCALIZATION_FEATURE = "com.oracle.svm.core.jdk.localization.LocalizationFeature";
@@ -143,7 +144,27 @@ public void write(String s, byte[] bytes) {
                 Object.class.getName(), Feature.class.getName());
         file.addAnnotation("com.oracle.svm.core.annotate.AutomaticFeature");
 
-        //MethodCreator afterReg = file.getMethodCreator("afterRegistration", void.class, "org.graalvm.nativeimage.Feature$AfterRegistrationAccess");
+        MethodCreator duringSetup = file.getMethodCreator("duringSetup", "V", DURING_SETUP_ACCESS);
+        // Register Lambda Capturing Types
+        if (!lambdaCapturingTypeBuildItems.isEmpty()) {
+            ResultHandle runtimeSerializationSupportSingleton = duringSetup.invokeStaticMethod(IMAGE_SINGLETONS_LOOKUP,
+                    duringSetup.loadClassFromTCCL("org.graalvm.nativeimage.impl.RuntimeSerializationSupport"));
+            ResultHandle configAlwaysTrue = duringSetup.invokeStaticMethod(CONFIGURATION_ALWAYS_TRUE);
+
+            for (LambdaCapturingTypeBuildItem i : lambdaCapturingTypeBuildItems) {
+                TryBlock tryBlock = duringSetup.tryBlock();
+
+                tryBlock.invokeInterfaceMethod(REGISTER_LAMBDA_CAPTURING_CLASS, runtimeSerializationSupportSingleton,
+                        configAlwaysTrue,
+                        tryBlock.load(i.getClassName()));
+
+                CatchBlockCreator catchBlock = tryBlock.addCatch(Throwable.class);
+                catchBlock.invokeVirtualMethod(ofMethod(Throwable.class, "printStackTrace", void.class),
+                        catchBlock.getCaughtException());
+            }
+        }
+        duringSetup.returnValue(null);
+
         MethodCreator beforeAn = file.getMethodCreator("beforeAnalysis", "V", BEFORE_ANALYSIS_ACCESS);
         TryBlock overallCatch = beforeAn.tryBlock();
         //TODO: at some point we are going to need to break this up, as if it get too big it will hit the method size limit
@@ -312,25 +333,6 @@ public void write(String s, byte[] bytes) {
                     overallCatch.load(i.serviceDescriptorFile()));
         }
 
-        // Register Lambda Capturing Types
-        if (!lambdaCapturingTypeBuildItems.isEmpty()) {
-            ResultHandle runtimeSerializationSupportSingleton = overallCatch.invokeStaticMethod(IMAGE_SINGLETONS_LOOKUP,
-                    overallCatch.loadClassFromTCCL("org.graalvm.nativeimage.impl.RuntimeSerializationSupport"));
-            ResultHandle configAlwaysTrue = overallCatch.invokeStaticMethod(CONFIGURATION_ALWAYS_TRUE);
-
-            for (LambdaCapturingTypeBuildItem i : lambdaCapturingTypeBuildItems) {
-                TryBlock tryBlock = overallCatch.tryBlock();
-
-                tryBlock.invokeInterfaceMethod(REGISTER_LAMBDA_CAPTURING_CLASS, runtimeSerializationSupportSingleton,
-                        configAlwaysTrue,
-                        tryBlock.load(i.getClassName()));
-
-                CatchBlockCreator catchBlock = tryBlock.addCatch(Throwable.class);
-                catchBlock.invokeVirtualMethod(ofMethod(Throwable.class, "printStackTrace", void.class),
-                        catchBlock.getCaughtException());
-            }
-        }
-
         if (!resourceBundles.isEmpty()) {
             AssignableResultHandle registerMethod = overallCatch.createVariable(Method.class);
             AssignableResultHandle locClass = overallCatch.createVariable(Class.class);

integration-tests/main/src/main/java/io/quarkus/it/rest/ResourceLambda.java

@@ -1,40 +1,41 @@
 package io.quarkus.it.rest;
 
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
+import java.io.Serializable;
 import java.lang.invoke.SerializedLambda;
 import java.util.Comparator;
 
 import io.quarkus.runtime.annotations.RegisterForReflection;
 
 /**
- * This class is registering itself for lambda capturing
+ * This class is registering for lambda capturing
  */
 @RegisterForReflection(lambdaCapturingTypes = "java.util.Comparator", targets = {
         SerializedLambda.class, SerializableDoubleFunction.class }, serialization = true)
 public class ResourceLambda {
-    private static final String file = "target/serialized.txt";
 
     public Class<?> getLambdaFuncClass(Integer n) throws IOException, ClassNotFoundException {
         SerializableDoubleFunction func = new SerializableDoubleFunction(n);
         Comparator<Integer> comp = Comparator.comparingDouble(func);
-        serializeObject(comp);
-        return deserializeObject().getClass();
+
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        serializeObject(out, (Serializable) comp);
+        return deserializeObject(out).getClass();
     }
 
-    private void serializeObject(Object o) throws IOException {
-        FileOutputStream out = new FileOutputStream(file);
-        ObjectOutputStream objectOutputStream = new ObjectOutputStream(out);
+    private void serializeObject(ByteArrayOutputStream byteArrayOutputStream, Serializable o) throws IOException {
+        ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);
         objectOutputStream.writeObject(o);
         objectOutputStream.close();
     }
 
-    private Object deserializeObject() throws IOException, ClassNotFoundException {
-        FileInputStream in = new FileInputStream(file);
-        ObjectInputStream objectInputStream = new ObjectInputStream(in);
+    private Object deserializeObject(ByteArrayOutputStream byteArrayOutputStream) throws IOException, ClassNotFoundException {
+        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
+        ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
         return objectInputStream.readObject();
     }
 }

integration-tests/main/src/main/resources/application.properties

@@ -52,7 +52,6 @@ quarkus.native.resources.excludes = **/unwanted.*
 
 quarkus.log.metrics.enabled=true
 
-#quarkus.native.additional-build-args =-H:ReflectionConfigurationFiles=reflection-config.json,-H:SerializationConfigurationResources=serialization-config.json
 quarkus.native.additional-build-args =-H:ReflectionConfigurationFiles=reflection-config.json
 quarkus.class-loading.removed-resources."io.quarkus\:quarkus-integration-test-shared-library"=io/quarkus/it/shared/RemovedResource.class
 quarkus.class-loading.removed-resources."io.quarkus\:quarkus-integration-test-main"=io/quarkus/it/rest/RemovedJaxRsApplication.class