Get Java Class<?> type object before deserialization of payload

[tex1988]

Hello!
Does anyone know how to get the class type or fully qualified class name of a payload before it's deserialized? Looking for something similar to Kryo's functionality (kryo.readClass)

[chaokunyang]

You can invoke fory.getClassResolver().readClassInfo()

[tex1988]

I still can't understand how to get Fory from ThreadSafeFory. Here is my code that build Fory

        ForyBuilder builder = Fory.builder()
                .withLanguage(Language.JAVA)
                .withRefTracking(true)
                .withAsyncCompilation(true);
        boolean isRegistrationRequired = allowedListClasses != null && !allowedListClasses.isEmpty();
        builder.requireClassRegistration(isRegistrationRequired);
        ThreadSafeFory fory = builder.buildThreadSafeForyPool(minPoolSize, maxPoolSize);
        if (isRegistrationRequired) {
            for (Class<?> clazz : allowedListClasses) {
                fory.register(clazz);
            }
        }

buildThreadSafeForyPool returns a ThreadSafeFory, which extends BaseFory. Neither of these types has a public getClassResolver() method.
The actual implementation returned by builder.buildThreadSafeForyPool is ThreadPoolFory, which extends AbstractThreadSafeFory. Neither of them provides access to this method or to the underlying Fory instance from the pool.

I can’t avoid using a pooled wrapper because I’m working with virtual threads and don’t want to implement pool management myself.

[chaokunyang]

Then you can't use readClassInfo. We won't add readClassInfo to ThreadSafeFory. readClassInfo is not designed for being used in a multil-threaded scenarios

[chaokunyang]

BTW, kryo.readClass is also not thread-safe. Kryo class is similair to Fory class

[tex1988]

Kryo provides a simple pool class that allows me to borrow a Kryo instance and return it to the pool in a straightforward way. It would be nice to have an ability to borrow instance from ThreadPoolFory and return it mannualy

[chaokunyang]

A pull request would be great. You can add it to ThreadPoolFory