unnamed module of loader

[zzhi]

apm-grpc-1.x-plugin-8.7.0.jar cause an error

Caused by: java.lang.ClassCastException: class io.grpc.ClientInterceptors$InterceptorChannel cannot be cast to class io.grpc.ManagedChannel (io.grpc.ClientInterceptors$InterceptorChannel and io.grpc.ManagedChannel are in unnamed module of loader org.springframework.boot.loader.LaunchedURLClassLoader @ccb4b1b)

the code:
ManagedChannel channe2 = (ManagedChannel) blockingStub.getChannel();

[wu-sheng]

Maybe you are using some specific classloader? Just guess.

[zzhi]

before use java agent plugins it ok ; after use agent plugins ,throw error like that . when i delete only the apm-grpc-1.x-plugin-8.7.0.jar , ok again

[zzhi]

after

before

[zzhi]

debug the code
i find the org.apache.skywalking.apm.plugin.grpc.v1.client.AbstractStubInterceptor

change ManagedChannel to io.grpc.ClientInterceptors$InterceptorChannel
how to get the ManagedChannelOrphanWrapper from ClientInterceptors$InterceptorChannel 's channel
@wu-sheng

[zzhi]

[wu-sheng]

Maybe you are in some special cases or unsupported versions, check here about what we are testing. https://github.com/apache/skywalking-java/tree/main/test/plugin/scenarios/grpc-scenario

These were tested versions, https://github.com/apache/skywalking-java/blob/main/test/plugin/scenarios/grpc-scenario/support-version.list

[zzhi]

thanks

[zyk888333]

hello, how did you solve this problem?