It doesnt really make sense to cache a stub in redis, just like it wouldn't
make sense to serialize a socket,
or a thread pool. Those kind of objects only have an use in a given process.
On Wed, May 6, 2020 at 9:06 PM <georgepfos...@gmail.com> wrote:
> Hello,
>
> I would like to cache a GRPC stub into redis. Is this possible? When I try
> I get serialzation errors. I've tried adding serialization methods onto the
> generated stub classes but still get serialization errors. I am using java
> but open to using other implementations.
>
> Thanks in advance for the insight!
>
> Here is my serialization code.
>
> ManagedChannel channel = ManagedChannelBuilder.forAddress("localhost", 9002)
> .usePlaintext()
> .build();
> MyGrpc.MyStub myStub = MyGrpc.newStub(channel);
> StreamObserver<MessageResponse> responseObserver = new
> ServerCallStreamObserver<MessageResponse>() {
> ...
> };
> myStub.doubleStream(responseObserver);
>
> ByteArrayOutputStream bos = new ByteArrayOutputStream();
> ObjectOutputStream out = new ObjectOutputStream(bos);
> out.writeObject(myStub);
> out.flush();
> byte[] value = bos.toByteArray();
> bos.close();
>
> Jedis jedis = new Jedis("localhost", 6379);
> byte[] key = "key".getBytes();
> jedis.setex(key, 10, value);
>
> byte[] bytes = jedis.get(key);
> ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
> ObjectInput in = new ObjectInputStream(bis);
> MyGrpc.myStub cachedStub = (MyGrpc.MyStub) in.readObject();
>
>
> When I try to deserialize the object I get the following error.
>
>
> Exception in thread "main" java.io.NotSerializableException:
> ai.com.proxy.generated.MyGrpc$MyStub
> at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1184)
> at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:348)
> at ai.com.proxy.ProxyApplication.main(ProxyApplication.java:83)
>
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Christian Rivasseau
Co-founder and CTO @ Lefty <http://www.lefty.io>
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