Mida login on AWS lambda about mida

[desoss]

I've inspected the code you wrote and I've solved the problem described above.
There are no write permissions needed. So no custom file system is needed for the AWS Lambda function.

The problem that I had was related to the fact that I was bundling my Lambda function, compiling it into a single file.
Simply excluding all the Mida dependencies from the produced bundle did the job!

As a suggestion, I would raise an exception in the load() function that you wrote if the .proto files are not correctly loaded.

[Vasile-Peste]

Hello, when using Mida with cTrader, a socket connection is created under the hood to use cTrader's Open API. The messages exchanged between Mida and cTrader are structured with protobuff. The protobuff schemas are loaded from the file system automatically, this error occurs when the protobuff reader was unable to load the .proto files from the file system.

I don't know how AWS Lambda works, but most probably you don't have access to file system and/or you are unable to read this files: https://github.com/Reiryoku-Technologies/cTrader-Layer/tree/master/protobuf
This library is used under the hood by the Mida cTrader plugin

I think you should investigate more about the file system, let me know here, thank you!

[desoss]

Hey @Vasile-Peste, thanks for your answer.
It makes totally sense.

Mounting a custom file system for the AWS Lambda it's possible.
Nevertheless, it would cost slightly more and it'll slow down the code execution because also a VPC has to be configured.

Notice that, it's possible to read/write from a local disk in a Lambda function without a custom file system, but writing is limited to the /tmp directory.

Would it be possible to make configurable the root directory in which the .proto files are stored?