I'm trying to share a CompletionQueue between multiple servers on different
ports. The desired setup is as follows (and I'm very open to alternative
designs if I'm doing something conceptually wrong.)
public client (x509) -> firewall -> server : 5001
server : 5002
(unsecure, or basic SSL) <- internal client
The basic idea is that I have APIs that I want to expose to external
clients, and APIs that I only want to expose to other services inside our
datacenter. I don't want either type of client to be able to access the
APIs for the other type of client.
I read https://groups.google.com/forum/#!topic/grpc-io/iag1a5RPez0 which
asserts that it's possible to create multiple servers on different ports.
All I can see in ServerBuilder is various ways to allow multiple servers to
*all* listen on multiple ports. I want to have server 1 listen on port 1,
and server 2 listen on port 2. I've got an async application right now and
want to share one CompletionQueue between the two services. Is this
possible?
I'm starting my server using:
void *MakeTag(::std::function<void(bool)> function) {
return static_cast<void *>(new ::std::function<void(bool)>(function));
}
void RunTag(void *tag, bool ok) {
(*static_cast<::std::function<void(bool)> *>(tag))(ok);
}
void FreeTag(void *tag) {
delete static_cast<::std::function<void(bool)> *>(tag);
}
...
::grpc::ServerBuilder builder;
builder.AddListeningPort(server_address, MakeServerCredentials());
builder.RegisterService(&service);
::std::unique_ptr<::grpc::ServerCompletionQueue> cq =
builder.AddCompletionQueue();
::std::unique_ptr<::grpc::Server> server(builder.BuildAndStart());
new Request(server.get(), &service, cq.get());
void *tag;
bool ok;
while (true) {
GPR_ASSERT(cq->Next(&tag, &ok));
grpc_core::ExecCtx exec_ctx;
// Null tag means no action.
if (tag) {
RunTag(tag, ok);
FreeTag(tag);
}
}
My workaround today is to create 2 ServerBuilders in 2 threads. That feels
wrong.
Thanks,
Austin
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