Azure Functions - Don't Like System.Text.Json

Question

Azure Functions - Don't Like System.Text.Json

euangordon opened this issue 3 years ago · 6 comments

I have been trying to use deepl in an Azure Function and am battling against errors because of System.Text.Json.

Error:
System.AggregateException: One or more errors occurred. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Text.Json, Version=5.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.

Issue is mentioned in this issue:
Azure/azure-functions-host#5469

What I am wondering, is if it is possible to use Newtonsoft.Json instead of System.Text.Json. Microsoft seem to be moving everything over to Newtonsoft instead.

Answer 1 · 2022-01-20T15:56:33.000Z

Hi Euan,

thanks for filing this issue. Is it possible that you are mixing something up? DeepL.NET is using Newtonsoft JSON and not System.Text.Json. Do you want me to switch to System.Text.Json? I have actually thought about switching over to System.Text.Json, but in that case I would have to bump up the target framework, because netstandard2.0 does not have support for System.Text.Json. I am not quite sure how that would effect downstream users, maybe some of them still require netstandard2.0, because it is still widely in use.

Answer 2 · 2022-01-20T15:59:29.000Z

Also, have you had a look at the official library? I have developed DeepL.NET, because there was no official client library for .NET, but lately DeepL has started developing their own library: https://github.com/DeepLcom/deepl-dotnet.

Answer 3 · 2022-01-20T16:00:08.000Z

I believe they are using System.Text.Json, because they are dual targeting netstandard2.0 and .NET 5

Answer 4 · 2022-01-20T16:15:11.000Z

Hi David,

Sorry, I should have logged it on their Repo. I will create it over there too.

Firstly, I tried using theirs and got no where because of the System.Text.Json issue. With Azure Functions, I could not see how it was possible to use it without some magic. Did some Googling / Stackoverflow and I don't think it is possible.

Azure Functions depenencies are a bit of a nightmare and seem to be getting harder to manage dependencies if you are doing anything slightly more complex. They often target exact versions of dependencies like Newtonsoft.Json, so as soon as you need a different version things start getting a little messy.

I then tried this project and also received some errors, I can't remember exactly what at the moment. Could try again if you want to know.

So I ended up moving over to just writing a simple Client Post that does what I need and nothing more. (Just a simple ZH to EN-GB for plain text).

Answer 5 · 2022-01-27T20:05:34.000Z

Hi Euan,

I am sorry to hear that you have so many problems with Azure Functions. If it is still possible, it would be nice to know what errors you encountered.

Answer 6 · 2022-02-01T21:01:12.000Z

Hi Euan,

since this is not really an issue for this implementation of DeepL for .NET I am going to close this issue for now. Please feel free to reopen or create a new one if there is something that I can do.