GRPC：远程错误和消息中缺少参数

Question

我正在用grpc运行一个简单的python服务器应用程序。这是服务器代码：

类分类器（grpc_cl.BetaClassifierServicer公司)公司名称：

def __init__(self):
    default_config = self.getDefaultConfig()
    self.engine_config = default_config["engine"]
    self.port = default_config["daemon"]["port"]
    # self.engine = loadLSTM3Model(self.engine_config)

def getDefaultConfig(self):
    with open("service.properties.yaml", "r") as stream:
        default_config = yaml.load(stream)
    return default_config

def Analyze(self, request, context):
    file_name = request.sentences_file
    print "This is the file to analyze ", file_name
    error = grpc_cl.Error(error_code = 0, error_message = "OK")

    return grpc_cl.CategoryReply(error)

客户：

^{pr2}$

以及包含以下信息的.proto文件：

syntax = "proto3";

service Classifier{
    rpc Analyze(CategoryRequest) returns (CategoryReply){}
    rpc Train(TrainRequest) returns (CategoryReply){}
}

message CategoryRequest{
    int32 user_context = 1;
    string sentences_file = 2;
}
message CategoryReply{
    Error error = 1;
    string categories_file = 2;
}
message Error{
    int32 error_code = 1;
    string error_message = 2;
}

启动服务器和客户端并将它们连接到各自的端口时，会出现以下错误：

Traceback (most recent call last):
  File "/home/~/service/client.py", line 19, in <module>
    reply = stub.Analyze(classifier_grpc.CategoryRequest(user_context=1, sentences_file="file"), 10000)
  File "/usr/local/lib/python2.7/dist-packages/grpc/framework/crust/implementations.py", line 73, in __call__
    protocol_options, metadata, request)
  File "/usr/local/lib/python2.7/dist-packages/grpc/framework/crust/_calls.py", line 109, in blocking_unary_unary
    return next(rendezvous)
  File "/usr/local/lib/python2.7/dist-packages/grpc/framework/crust/_control.py", line 412, in next
    raise self._termination.abortion_error
grpc.framework.interfaces.face.face.RemoteError

有人知道为什么会这样吗？另外，我可以从CategoryRequest中提取用户上下文，但不能提取句子\u文件字符串，那一个是空的。在

Answer 1

grpc.framework.interfaces.face.face.RemoteError表示服务器在处理请求时发生异常。在

在您的例子中，protobuf参数需要通过关键字指定，即

return grpc_cl.CategoryReply(error)

应该是

return grpc_cl.CategoryReply(error=error)