Counter example not supported grpc

[shibd]

Describe the bug

我尝试在Counter中增加grpc的实现，启动报错。我在counter的resource文件中输出了raft.desc。经过排查，发现这个类ProtobufMsgFactory只能加载最新的raft.desc，如果我在应用中声明了这个文件，那么jraft-core包中的文件将加载不到。

Exception in thread "main" java.lang.NullPointerException: null default instance: com.alipay.sofa.jraft.rpc.RpcRequests$AppendEntriesRequest
	at com.alipay.sofa.jraft.util.Requires.requireNonNull(Requires.java:55)
	at com.alipay.sofa.jraft.rpc.impl.GrpcServer.registerProcessor(GrpcServer.java:94)
	at com.alipay.sofa.jraft.rpc.RaftRpcServerFactory.addRaftRequestProcessors(RaftRpcServerFactory.java:101)
	at com.alipay.sofa.jraft.rpc.RaftRpcServerFactory.createRaftRpcServer(RaftRpcServerFactory.java:75)
	at com.alipay.sofa.jraft.rpc.RaftRpcServerFactory.createRaftRpcServer(RaftRpcServerFactory.java:61)
	at com.alipay.sofa.jraft.example.counter.CounterServer.<init>(CounterServer.java:53)
	at com.alipay.sofa.jraft.example.counter.CounterServer.main(CounterServer.java:136)

Expected behavior

ProtobufMsgFactory应该要能加载*.desc的文件

Actual behavior

ProtobufMsgFactory 只能加载raft.desc的文件

Minimal yet complete reproducer code (or GitHub URL to code)

参见：shibd#3

Environment

• SOFAJRaft version: master
• JVM version (e.g. java -version): 1.8
• OS version (e.g. uname -a): mac os
• Maven version:
• IDE version:

[sofastack-bot]

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Describe the bug I tried to add the implementation of grpc in Counter and started reporting errors. I output raft.desc in the counter's resource file. After investigation, it was found that this class ProtobufMsgFactory can only load the latest raft.desc. If I declare this file in the application, the files in the jraft-core package will not be loaded. `Exception in thread&quot; main &quot;java.lang.NullPointerException: null default instance: com.alipay.sofa.jraft.rpc.RpcRequests $ AppendEntriesRequest at com.alipay.sofa.jraft.util.Requires.requireNonNull (Requires.java : 55) at com.alipay.sofa.jraft.rpc.impl.GrpcServer.registerProcessor (GrpcServer.java:94) at com.alipay.sofa.jraft.rpc.RaftRpcServerFactory.addRaftRequestProcessors (RaftRpcServerFactory.java:101) at com. alipay.sofa.jraft.rpc.RaftRpcServerFactory.createRaftRpcServer (RaftRpcServerFactory.java:75) at com.alipay.sofa.jraft.rpc.RaftRpcServerFactory.createRaftRpcServer (RaftRpcServerFactory.java:61) at com.alipay.sofa.jraft.example. counter.CounterServer. <init> (CounterServer.java:53) at com.alipay.sofa.jraft.example.counter.CounterServer.main (CounterServer.java:136) ### Expected behavior ProtobufMsgFactoryshould be able to load* .desc的 文件 ### Actual behavior ProtobufMsgFactory can only load raft.descfiles ### Minimal yet complete reproducer code (or GitHub URL to code) See: https://github.com/shibd/sofa-jraft / pull / 2 / files ### Environment-SOFAJRaft version: master-JVM version (egjava -version): 1.8-OS version (eg uname -a`): mac os-Maven version:-IDE version:

[fengjiachun]

jraft-core之外的不应该依靠 ProtobufMsgFactory 来加载，
参考如下方式：
两步：

1. com.alipay.sofa.jraft.rpc.impl.GrpcRaftRpcFactory#registerProtobufSerializer 注册 request 和 response proto
2. com.alipay.sofa.jraft.rpc.impl.MarshallerHelper#registerRespInstance 注册 request 和response 的映射关系

[shibd]

jraft-core之外的不应该依靠 ProtobufMsgFactory 来加载，
参考如下方式：
两步：

1. com.alipay.sofa.jraft.rpc.impl.GrpcRaftRpcFactory#registerProtobufSerializer 注册 request 和 response proto
2. com.alipay.sofa.jraft.rpc.impl.MarshallerHelper#registerRespInstance 注册 request 和response 的映射关系

好的，谢谢。用这个后没问题了，跑通了。shibd#3