Repository.Clone() not working within a Azure Function (Unable to load DLL 'git2-6311e88')

[anthonyhuebers]

I'm trying to clone repositories in an Azure Function to determine if repositories are up and cloneable.

The following code does work in a Console App (.NET Core) project but not in an Azure function project

var tempPath = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString("D"));
Directory.CreateDirectory(tempPath);

var cloneDirectory = Path.Combine(tempPath, "clone");

var repositoryLocation = @"https://github.com/anthonyhuebers/GitClone.git";
var cloneResult = Repository.Clone(repositoryLocation, cloneDirectory, new CloneOptions());

In an Azure function project i get the following exception message:

The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception.

With inner exception:

Unable to load DLL 'git2-6311e88': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

Any idea why it's not working? You can reproduce the problem by checking my git repository: https://github.com/anthonyhuebers/GitClone. I'm using LibGit2Sharp 0.25.0

[ethomson]

This is a dup of #1533. Fundamentally, we do not know if Azure Functions supports native method calls (PInvoke) - and if it does - where or how to load those libraries. If you have information or know how to debug this, that would be helpful.

[anthonyhuebers]

This morning I solved the problem. I used an Azure Function v1 (.NET Framework instead of .NET Standard) with the LibGit2Sharp 0.21.0.176. When you include the native binary in the release it is working!

[ethomson]

Thanks for this information, @anthonyhuebers.

[helizabethwhite]

I was running into a similar problem (albeit with a different git2-xxxx hash) and found that I had also been using an Azure Function v1. Trying with an Azure Function v2 fixed it 👍

[ethomson]

Thanks for the info @helizabethwhite. Closing this since we seem to
Have a solution.

[ethomson]

(Oops it was already closed. In that case I’m reopening it accidentally so that I can dramatically close it again.)

[juhankki]

@anthonyhuebers @helizabethwhite
How did you get this to work?

I get the same error using Functions Runtime 2.0
I've also tried older versions, different dotnet core sdk's, and both 32- and 64-bit architectures, but still get that 'Unable to load DLL 'git2-xxxx'' error.

[juhankki]

I think I figured it out.
Runtime needs to be set to win-x64 in publishing settings (in addition to runtime setting in Azure)