graal | Java toolkit for querying knowledge bases within | Rule Engine library

Have you seem this example - https://github.com/spring-projects-experimental/spring-native/tree/main/samples/cloud-function-aws?

Also, there were issues with that new CustomRuntimeEventLoop that have already been addressed, so consider using the latest snapshot.

This is how I would do it.

The recommended way to use Graal.js is via the polyglot API: https://www.graalvm.org/reference-manual/embed-languages/

Not the same probably would work with the ScriptEngine API, but here's the example using the polyglot API.

1. Wrap the function definition in ()
2. return the functions to Java
3. Not pictured, but you probably build a map from the column name to a list of functions to invoke on it.
4. Call the functions on the data.

It is a JVM limitation that we cannot inject private fields without using reflection.

You have 2 options:

1. Make the field package private instead of private
2. Add @ReflectiveAccess onto the field to generate the necessary graal reflective metadata

Ideally, once you connect you should wait for the connection status, before you start asking for the list of profiles.

These are some code snippets you could use:

Device discovery

Solution : Bouncy Castle security provider was unable to register with JCE provider.tried downgrading the version of sshd-core dependency library to 1.2 for JDK11

Could you try with a clean ~/.m2/repository/ (just move yours away before trying)?

I've created my native image in a docker, I deleted some lines in my native image command line that throws an exception while cretating the native image. This lines tried to find some files that aren't in that place. Also, I delete some lines that were from an old version of GraalVM. Those lines are this:

You call unescape({code:'CU_USER'}) while unescape expects a String. Thus, the object you provide as argument is converted to a String (to [object Object] actually) and thus the header variable on the JavaScript side holds a String, not an Object as you expect.

The solution would be to simply remove the unescape, i.e. use graalEngine.eval("var header = " + message); instead.

An alternative solution would be to pass in a Java object. You seem to have tried that with the commented out graalEngine.put("header",message); line. Note that I suppose don't want to pass in a Java string; what you typically want to pass in was a Java object that has a code field. Note that for this to work you need to enable the hostAccess permission to the engine (for more details, check https://github.com/graalvm/graaljs/blob/master/docs/user/ScriptEngine.md).

solution draft:

This error is not related to reflection.

Feature and AutomaticFeature are GraalVM native image concepts that allow programmatic configuration for the native iamge, more details can be found for example in the javadoc: https://github.com/oracle/graal/blob/master/sdk/src/org.graalvm.nativeimage/src/org/graalvm/nativeimage/hosted/Feature.java#L59

The error you show happens during the image generation, this is a normal java process, which doesn't need to have reflection configured etc. Those are the configuration for the runtime behavior.

What the error says is that AwsSdkAutomaticFeature (source tries to call void io.micronaut.core.graal.AutomaticFeatureUtils.initializeAtBuildTime(org.graalvm.nativeimage.hosted.Feature$BeforeAnalysisAccess, java.lang.String) but there's no such method. Most probable cause is the version mismatch between the dependency and the core micronaut library that contain graal support.