Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
A Java agent for fixing exports for an app that is not yet Java 9 aware.
import java.lang.instrument.Instrumentation;
import java.lang.reflect.Layer;
import java.lang.reflect.Module;
import java.util.*;
public class WeakeningAgent {
public static void premain(String argument, Instrumentation instrumentation) {
boolean full = argument != null && argument.equals("full");
Set<Module> importing = new HashSet<>(), exporting = new HashSet<>();
Layer.boot().modules().forEach(module -> {
if (module.getDescriptor().isAutomatic()) {
importing.add(module);
} else if (!module.getDescriptor().isWeak()) {
exporting.add(module);
}
});
for (Module module : exporting) {
Map<String, Set<Module>> exports = new HashMap<>();
for (String pkg : module.getPackages()) {
exports.put(pkg, importing);
}
instrumentation.redefineModule(module,
Collections.emptySet(),
full ? exports : Collections.emptyMap(),
exports,
Collections.emptySet(),
Collections.emptyMap());
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.