// HandleStreamingRPC is an internal method. Do not use!
func (server *Server) HandleStreamingRPC(
grpcStream core.LeverRPC_HandleStreamingRPCServer) error {
ctx := grpcStream.Context()
err := setInternalRPCGateway(ctx)
if err != nil {
return err
}
leverURL, err := extractLeverURL(ctx)
if err != nil {
return err
}
fstMsg, err := grpcStream.Recv()
if err != nil {
return err
}
rpc := fstMsg.GetRpc()
if rpc == nil {
return fmt.Errorf("First message needs to have RPC field set")
}
if rpc.GetArgsOneof() == nil {
return fmt.Errorf("RPC has no args oneof")
}
// Reply with an empty msg (first response message must be empty).
grpcStream.Send(&core.StreamMessage{})
server.lock.RLock()
entry, handlerOK := server.streamingHandlers[leverURL.Method]
resourceOK := true
if leverURL.Resource != "" {
_, resourceOK = server.resources[leverURL.Resource]
}
server.lock.RUnlock()
if !handlerOK {
return fmt.Errorf("Method not found")
}
if !resourceOK {
return fmt.Errorf("Resource not found")
}
_, err = callHandler(ctx, leverURL.Resource, entry, rpc, grpcStream)
return err
}
