Example for registration via feature

Author: maschnetwork

pom.xml

@@ -345,6 +345,7 @@
     </profiles>
 
     <dependencies>
+
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
@@ -370,6 +371,11 @@
             <version>1.4</version>
             <scope>test</scope>
         </dependency>
+        <dependency>
+            <groupId>org.graalvm.sdk</groupId>
+            <artifactId>graal-sdk</artifactId>
+            <version>23.1.1</version>
+        </dependency>
     </dependencies>
     <build>
         <resources>

src/main/java/software/amazon/awssdk/crt/graalvm/JNIRegistrationFeature.java

@@ -0,0 +1,19 @@
+package software.amazon.awssdk.crt.graalvm;
+
+
+import org.graalvm.nativeimage.hosted.Feature;
+import org.graalvm.nativeimage.hosted.RuntimeJNIAccess;
+import software.amazon.awssdk.crt.http.HttpRequestBase;
+
+
+class JNIRegistrationFeature implements Feature {
+    public void beforeAnalysis(BeforeAnalysisAccess access) {
+        try {
+            RuntimeJNIAccess.register(HttpRequestBase.class);
+            RuntimeJNIAccess.register(HttpRequestBase.class.getDeclaredField("bodyStream"));
+        } catch (NoSuchFieldException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
+

src/main/resources/META-INF/native-image/software.amazon.awssdk/crt/aws-crt/jni-config.json

@@ -174,10 +174,6 @@
     "name":"software.amazon.awssdk.crt.http.HttpRequest",
     "methods":[{"name":"<init>","parameterTypes":["java.nio.ByteBuffer","software.amazon.awssdk.crt.http.HttpRequestBodyStream"] }]
   },
-  {
-    "name":"software.amazon.awssdk.crt.http.HttpRequestBase",
-    "fields":[{"name":"bodyStream"}]
-  },
   {
     "name":"software.amazon.awssdk.crt.http.HttpRequestBodyStream",
     "methods":[{"name":"getLength","parameterTypes":[] }, {"name":"resetPosition","parameterTypes":[] }, {"name":"sendRequestBody","parameterTypes":["java.nio.ByteBuffer"] }]

src/main/resources/META-INF/native-image/software.amazon.awssdk/crt/aws-crt/native-image.properties

@@ -1 +1 @@
-Args=-H:ClassInitialization=org.slf4j:build_time
+Args=-H:ClassInitialization=org.slf4j:build_time --features=software.amazon.awssdk.crt.graalvm.JNIRegistrationFeature