I'm building out a series of ProtoBuf definitions for a .NetCore gRPC
application.
I'm using the Orchestrator pattern as I will be creating a series of
microservices.
I am running into issues with my proto definitions throwing compiler errors
as being "undefined."
The definitions are in several different files (with different C#
namespaces).
What follows is a simplified version of my definitions.
Consider the following protobuf files:
**service.proto**
syntax = "proto3";
option csharp_namespace = "RequestHandlerService";
package test;
service Handler
{
rpc AddItem1(G_RequestType1) returns (G_RequestResponse) { }
rpc AddItem2(G_RequestType2) returns (G_RequestResponse) { }
}
message G_RequestType1{
string originId = 1;
string request = 2;
}
message G_RequestType2{
string originId = 1;
string request = 2;
}
message G_RequestResponse{
string response = 1;
}
**windowsservice.proto:**
syntax = "proto3";
import "google/protobuf/timestamp.proto";
option csharp_namespace = "Windows.RequestHandler.Service";
package windows.requesthandler.service;
service WindowsHandler
{
rpc Action1(G_Action1Request) returns (G_Action1Response) { }
rpc Action2(G_Action2Request) returns (G_Action2Reponse) { }
}
message G_Action1Request{
string transactionId = 1;
google.protobuf.Timestamp DateTimeStamp = 2;
string filePath = 3;
}
message G_Action2Request{
string transactionId = 1;
google.protobuf.Timestamp DateTimeStamp = 2;
string textToInsert = 3;
}
message G_Action1Response {
google.protobuf.Timestamp DateTimeStamp = 1;
string fileSecurityStatusMessage = 2;
G_Action1Request action1Request = 3;
}
message G_Action2Response {
google.protobuf.Timestamp DateTimeStamp = 1;
string fileModifierStatusMessage = 2;
G_Action2Request action2Request = 3;
}
message G_WindowsRequest {
int32 requestId = 1;
oneof RequestType{
G_Action1Request action1Request = 2;
G_Action2Request action2Requestion = 3;
}
}
message G_WindowsRequestResponse {
bool wasSuccessful = 1;
string response = 2;
oneof ResponseType{
G_Action1Response action1Response = 3;
G_Action2Response action2Respone = 4;
}
}
**orchestrator.proto**
syntax = "proto3";
option csharp_namespace = "OrchestratorService";
package test;
import "service.proto";
import "windowsservice.proto";
service Orchestrator
{
rpc RegisterClient(G_RegisterClientRequest) returns (stream
G_Response) { }
rpc EnqueueRequest(G_OrchestrationRequest) returns (G_Response) { }
}
message G_OrchestrationRequest{
string originId = 1;
oneof RequestType{
G_RequestType1 requestType1 = 2;
G_RequestType2 requestType2 = 3;
G_Response response = 4;
G_WindowsRequest windowsRequest = 5;
G_WindowsRequestResponse windowsRequestResponse = 6;
}
}
message G_RegisterClientRequest{
string clientId = 1;
}
message G_Response{
bool wasSuccessful = 1;
string response = 2;
}
Here is the <ItemGroup> definition from the csproj file for my Orchestrator
project:
<ItemGroup>
<Protobuf Include="../Protos/orchestrator.proto" GrpcServices="Server"
ProtoRoot="../Protos/">
<Link>Protos/orchestrator.proto</Link>
</Protobuf>
<Protobuf Include="../Protos/service.proto" GrpcServices="Client"
ProtoRoot="../Protos/">
<Link>Protos/service.proto</Link>
</Protobuf>
<Protobuf Include="../Protos/windowsservice.proto"
GrpcServices="Client" ProtoRoot="../Protos/">
<Link>Protos/windowservice.proto</Link>
</Protobuf>
</ItemGroup>
Both **G_WindowsRequest** and **G_WindowsRequestResponse** are throwing a
compiler error saying they are undefined. Is this an issue with
**csharp_namespace** and/or **package** resolution?
Is there a way to enforce separate package/csharp_namespace definitions
within the separate proto definitions, but reference those definitions
within the rolled up "orchestrator" proto file definition?
**Here is a snippet of the compiler errors I am seeing:**
> 2> orchestrator.proto(22,5): error : "G_WindowsRequest" is not
> defined. 2> orchestrator.proto(23,5): error :
> "G_WindowsRequestResponse" is not defined. 2>Done building target
> "_Protobuf_CoreCompile" in project "Protos.csproj" -- FAILED. 2>
> 2>Done building project "Protos.csproj" -- FAILED. 2> 2>Build FAILED.
> 2> 2>orchestrator.proto(22,5): error : "G_WindowsRequest" is not
> defined. 2>orchestrator.proto(23,5): error :
> "G_WindowsRequestResponse" is not defined. 2> 0 Warning(s) 2> 2
> Error(s)
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