NCDFE on io.grpc.InternalGlobalInterceptors after updating 1.48.0 -> 1.57.2

[Mike Yawn]

I have a demo program that shows building microservices with Hazelcast + gRPC that works fine using gRPC 1.48.0.

My build system advised that due to CVEs I should upgrade, so I moved to 1.57.2.  Modules upgraded are grpc-netty-shaded (this is the one where the CVE was reported) as well as grpc-stub, grpc-protobuf, and protobuf-java (which was upgraded from 3.21.1 to 3.21.7).

After the upgrade, the server startup fails with the following stack trace:

Exception in thread "main" java.lang.NoClassDefFoundError: io/grpc/InternalGlobalInterceptors
at io.grpc.internal.ServerImplBuilder.getTracerFactories(ServerImplBuilder.java:252)
at io.grpc.internal.ServerImplBuilder.build(ServerImplBuilder.java:243)
at io.grpc.internal.AbstractServerImplBuilder.build(AbstractServerImplBuilder.java:217)
at org.example.grpc.GrpcServer.<init>(GrpcServer.java:42)
at org.hazelcast.msfdemo.invsvc.service.InventoryService.main(InventoryService.java:118)
Caused by: java.lang.ClassNotFoundException: io.grpc.InternalGlobalInterceptors
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:606)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:168)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
... 5 more

The server startup code is:

server = Grpc.newServerBuilderForPort(port, InsecureServerCredentials.create())
.executor(Executors.newFixedThreadPool(16))
.addService(service)
.build();

Any idea what I need to change to resolve this?

Thanks!

Mike

[Larry Safran]

You need to add a dependency on grpc-api (or make sure that you have the 1.57.2 version of it).

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[Mike Yawn]

Thanks, I think that might be part of the problem, but I also neglected to rebuild my protobufs after updating and so older versions of grpc libraries were still getting called.  (protobufs were in separate projects and I didn't think to update the dependencies of those projects and rebuild them).

I think I'm past this now, seeing a different error but at first glance I think it's completely unrelated.