Closed
Description
Expected Behavior
To be able to call SdkBytes.asByteArray via reflection, necessary for the method to be called from Clojure via interop. See also https://dev.clojure.org/jira/browse/CLJ-1243 and https://bugs.java.com/bugdatabase/view_bug.do?bug_id=4283544.
Current Behavior
Via clojure reflection:
java.lang.IllegalArgumentException
Can't call public method of non-public class: public final byte[]
software.amazon.awssdk.core.BytesWrapper.asByteArray()
In reproduction case below:
Exception in thread "main" java.lang.IllegalAccessException: Class ReflectionFail can not access a member of class software.amazon.awssdk.core.BytesWrapper with modifiers "public final"
at sun.reflect.Reflection.ensureMemberAccess(Reflection.java:102)
at java.lang.reflect.AccessibleObject.slowCheckMemberAccess(AccessibleObject.java:296)
at java.lang.reflect.AccessibleObject.checkAccess(AccessibleObject.java:288)
at java.lang.reflect.Method.invoke(Method.java:491)
at ReflectionFail.main(ReflectionFail.java:10)
Possible Solution
Make BytesWrapper public, similarly to netty/netty#1780
Steps to Reproduce (for bugs)
import software.amazon.awssdk.core.SdkBytes;
import java.lang.reflect.Method;
public class ReflectionFail {
public static void main(String[] args) throws Exception {
SdkBytes bytes = SdkBytes.fromUtf8String("test");
// Works
bytes.asByteArray();
// Doesn't work:
Class klass = bytes.getClass();
Method method = klass.getMethod("asByteArray");
method.invoke(bytes);
}
}Context
This issue came up in trying to convert an SdkBytes inside a DynamoDB AttributeValue to a byte array using asByteArray.
Currently we're working around this by using method.setAccessible(true); on the reflected Method, which allows us to call asByteArray on SdkBytes in Clojure via reflection.
Your Environment
- AWS Java SDK version used: 2.5.25
- JDK version used: 1.8.0_202
- Operating System and version: macOS 10.14.4