dotnet core 3.1 (Docker)

[WoodsterDK]

Hi there,

I seem to have trouble getting it to run from a dotnet core 3.1 docker image.
If I run the app it works, but as soon as it is being dockerized, it doesn't work.

Missing dependencies or any ideas?

[fw2568]

Hi,

without any details it is difficult to gues what kind of problems you had, but in general it is working. But as YaNco uses the native SAP RFC SDK you have to consider its requirements for a docker container.
Beside using the linux native libraries within docker, you have to take care of the LD_LIBRARY_PATH variable, that has to point to the sdk binaries.
Here you can find a working sample application that is using also docker: https://github.com/dbosoft/SAPHub

dockerfile: https://github.com/dbosoft/SAPHub/blob/main/src/SAPHub.SAPConnector/Dockerfile

Please notice the ENV statement that sets the LD_LIBRARY_PATH to the container's /app directory:

https://github.com/dbosoft/SAPHub/blob/8e9d6c1d47e6a053c5ba579d4d4df41e50116369/src/SAPHub.SAPConnector/Dockerfile#L21-L24

Hope that helps. If you still facing problems please provide a example with source.

Best Regards,
Frank

[WoodsterDK]

@fw2568 thanks for looking into it.

I'm out of office the next couple of days, but for sure will look into it, and get back.

Can you do a stand alone core 3.1 example app to test with as well...?

Again, Thanks...

[WoodsterDK]

@fw2568 Hi Frank,
I just received the Linux files and it seems to be working with a dotnet 5 app -> docker image.
When running the docker image the connection is successful.

When doing it as a dotnet core 3.1 app - I still get this error:
"System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Threading.Tasks.Dataflow, Version=5.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.'"

And that is when debugging from Visual Studio.

Could you try to do a simple dotnet core 3.1 I can try to use as templete - to see if I can figure out what is wrong?

[fw2568]

Could you please share the code?
Here a sample app where it is working with netcore 3.1: https://github.com/fw2568/YancoAzureFunctionTest/tree/master/YaNCo_netcore31

[WoodsterDK]

@fw2568 Just tried your test app, and that seems to be working when debugging dotnet core from Visual Studio.
I must have messed something up in the project - will try to start from scratch....

Thanks for you help so far....

[fw2568]

For some reason final solution is not visible in discussion, adding it here for documentation:

reply from WoodsterDK:

OK - I didn't use the nuget dependencies, and just had the System.Threading.Tasks.Dataflow.dll copied to the output folder - BUT it seems only to work for dotnet core 3.1, if it is added as a reference in the project, and not just present in the folder.
So it seems to work - WUHOO...