libgit2 / libgit2/libgit2sharp
AWS Lambda - Unable to load library
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- C#
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Description
Reproduction steps
dotnet tool install -g Amazon.Lambda.Tools
dotnet new --install Amazon.Lambda.Templates
dotnet new lambda.EmptyFunction --name LambdaGit
cd LambdaGit/src/LambdaGit
dotnet add package LibGit2Sharp --version 0.27.0-preview-0034
--- add "new LibGit2Sharp.Repository();" in "FunctionHandler" function in "Function.cs"
dotnet lambda deploy-function LambdaGit --function-role LambdaGitRole
dotnet lambda invoke-function LambdaGit --payload "LambdaOK"
Actual behavior
Payload:
{
"errorType": "TypeInitializationException",
"errorMessage": "The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception.",
"stackTrace": [
"at LibGit2Sharp.Core.NativeMethods.git_repository_new(git_repository*& repo)",
"at LibGit2Sharp.Core.Proxy.git_repository_new()",
"at LibGit2Sharp.Repository..ctor(String path, RepositoryOptions options, RepositoryRequiredParameter requiredParameter)",
"at lambda_method(Closure , Stream , Stream , LambdaContextInternal )"
],
"cause": {
"errorType": "DllNotFoundException",
"errorMessage": "Unable to load shared library 'git2-ef5a385' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libgit2-ef5a385: cannot open shared object file: No such file or directory",
"stackTrace": [
"at LibGit2Sharp.Core.NativeMethods.git_libgit2_init()",
"at LibGit2Sharp.Core.NativeMethods.InitializeNativeLibrary()",
"at LibGit2Sharp.Core.NativeMethods..cctor()"
]
}
}
Log Tail:
START RequestId: 0e940c07-4526-411d-9f47-ffbfc2cd3a73 Version: $LATEST
The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception.: TypeInitializationException
at LibGit2Sharp.Core.NativeMethods.git_repository_new(git_repository*& repo)
at LibGit2Sharp.Core.Proxy.git_repository_new()
at LibGit2Sharp.Repository..ctor(String path, RepositoryOptions options, RepositoryRequiredParameter requiredParameter)
at lambda_method(Closure , Stream , Stream , LambdaContextInternal )
at LibGit2Sharp.Core.NativeMethods.git_libgit2_init()
at LibGit2Sharp.Core.NativeMethods.InitializeNativeLibrary()
at LibGit2Sharp.Core.NativeMethods..cctor()
END RequestId: 0e940c07-4526-411d-9f47-ffbfc2cd3a73
REPORT RequestId: 0e940c07-4526-411d-9f47-ffbfc2cd3a73 Duration: 702.47 ms Billed Duration: 800 ms Memory Size: 256 MB Max Memory Used: 69 MB Init Duration: 156.11 ms
Version of LibGit2Sharp (release number or SHA1)
I tested all 84 available versions of GitLib2Sharp on Nuget. None of them worked.
Operating system(s) tested; .NET runtime tested
Amazon Linux 2
.NET Platform: 3.1
I analyzed several related issues in the GitLib2Sharp, aws-lambda-dotnet and Docker repositories but I was unable to solve this problem.
Please help me.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the reproduction in the issue, especially Function.cs and its FunctionHandler, using the Amazon.Lambda.Tools deployment and the LibGit2Sharp 0.27.0-preview-0034 package. Trace the failure through NativeMethods.InitializeNativeLibrary and compare the deployed Lambda environment with the reported DllNotFoundException. Done means the deployed function can construct LibGit2Sharp.Repository and invoke successfully without the native-library error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- aws, csharp
- Domain
- backend, cloud
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100