[BUG] SkiaSharp v3.116.0 System.TypeInitializationException when executing as Azure Linux Function (.NET 9.0 - isolated)

[HmichaelG]

Description

The following code executes successfully...

1. when executed locally within VS2022.
2. when executed within Docker desktop

but fails when executed as an Azure Linux Function app (.NET 9.0 - isolated).

Code

The test project: https://github.com/HmichaelG/SkiaTest

program.cs

using Microsoft.Azure.Functions.Worker.Builder;
using Microsoft.Extensions.Hosting;

var builder = FunctionsApplication.CreateBuilder(args);

builder.ConfigureFunctionsWebApplication();

// Application Insights isn't enabled by default. See https://aka.ms/AAt8mw4.
// builder.Services
//     .AddApplicationInsightsTelemetryWorkerService()
//     .ConfigureFunctionsApplicationInsights();

builder.Build().Run();

function

using System;
using Microsoft.Azure.Functions.Worker;
using Microsoft.Extensions.Logging;
using SkiaSharp;
using System.IO;

namespace SkiaTest
{
    public class SkiaTest
    {
        private readonly ILogger _logger;

        public SkiaTest(ILoggerFactory loggerFactory)
        {
            _logger = loggerFactory.CreateLogger<SkiaTest>();
        }

        [Function("SkiaTest")]
        public void Run([TimerTrigger("0 */5 * * * *", RunOnStartup = true)] TimerInfo myTimer)
        {
            var path = Path.GetTempPath();
            var outputFile = Path.Combine(path, "report.pdf");

            _logger.LogInformation("Writing to file...");
            // Create a PDF document
            var metadata = new SKDocumentPdfMetadata
            {
                Author = "Your Name",
                Title = "Sample PDF Report",
                Creation = DateTime.Now,
                Modified = DateTime.Now
            };

            using (var stream = File.Create(outputFile))
            {
                var document = SKDocument.CreatePdf(stream, metadata);
                using (var canvas = document.BeginPage(612, 792)) // A4 size in points
                {
                    canvas.Clear(SKColors.White);
                    using (var paint = new SKPaint
                    {
                        Color = SKColors.Black,
                        TextSize = 24
                    })
                    {
                        canvas.DrawText("Hello, World!", 100, 100, paint);
                    }
                }
                document.EndPage();
                document.Close();
            }
            _logger.LogInformation($"File written to: {outputFile}");

            if (myTimer.ScheduleStatus is not null)
            {
                _logger.LogInformation($"Next timer schedule at: {myTimer.ScheduleStatus.Next}");
            }
        }

    }
}

Expected Behavior

a report named "report.pdf" be created in the temp directory.

Actual Behavior

Result: Function 'SkiaTest', Invocation id '0245d8d8-2e4c-4d91-8363-5828a29c182a': An exception was thrown by the invocation.
Exception: System.TypeInitializationException: The type initializer for 'SkiaSharp.SKAbstractManagedWStream' threw an exception.
 ---> System.DllNotFoundException: Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider using a tool like strace. If you're using glibc, consider setting the LD_DEBUG environment variable: 
/usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0/libSkiaSharp.so: cannot open shared object file: No such file or directory
/home/site/wwwroot/libSkiaSharp.so: cannot open shared object file: No such file or directory
/usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0/liblibSkiaSharp.so: cannot open shared object file: No such file or directory
/home/site/wwwroot/liblibSkiaSharp.so: cannot open shared object file: No such file or directory
/usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0/libSkiaSharp: cannot open shared object file: No such file or directory
/home/site/wwwroot/libSkiaSharp: cannot open shared object file: No such file or directory
/usr/share/dotnet/shared/Microsoft.NETCore.App/9.0.0/liblibSkiaSharp: cannot open shared object file: No such file or directory
/home/site/wwwroot/liblibSkiaSharp: cannot open shared object file: No such file or directory

   at SkiaSharp.SkiaApi.sk_managedwstream_set_procs(SKManagedWStreamDelegates procs)
   at SkiaSharp.SkiaApi.sk_managedwstream_set_procs(SKManagedWStreamDelegates procs)
   at SkiaSharp.SKAbstractManagedWStream..cctor()
   --- End of inner exception stack trace ---
   at SkiaSharp.SKAbstractManagedWStream..ctor(Boolean owns)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream, Boolean disposeManagedStream, Boolean owns)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream, Boolean disposeManagedStream)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream)
   at SkiaSharp.SKDocument.CreatePdf(Stream stream, SKDocumentPdfMetadata metadata)
   at SkiaTest.SkiaTest.Run(TimerInfo myTimer) in D:\source\FunctionAppLatest\FunctionApp1\SkiaTest.cs:line 36
   at SkiaTest.DirectFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\source\FunctionAppLatest\FunctionApp1\obj\Release\net9.0\linux-x64\Microsoft.Azure.Functions.Worker.Sdk.Generators\Microsoft.Azure.Functions.Worker.Sdk.Generators.FunctionExecutorGenerator\GeneratedFunctionExecutor.g.cs:line 37
   at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\_work\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 13
   at Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore.FunctionsHttpProxyingMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\_work\1\s\extensions\Worker.Extensions.Http.AspNetCore\src\FunctionsMiddleware\FunctionsHttpProxyingMiddleware.cs:line 38
   at Microsoft.Azure.Functions.Worker.FunctionsApplication.InvokeFunctionAsync(FunctionContext context) in D:\a\_work\1\s\src\DotNetWorker.Core\FunctionsApplication.cs:line 96
Stack:    at SkiaSharp.SKAbstractManagedWStream..ctor(Boolean owns)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream, Boolean disposeManagedStream, Boolean owns)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream, Boolean disposeManagedStream)
   at SkiaSharp.SKManagedWStream..ctor(Stream managedStream)
   at SkiaSharp.SKDocument.CreatePdf(Stream stream, SKDocumentPdfMetadata metadata)
   at SkiaTest.SkiaTest.Run(TimerInfo myTimer) in D:\source\FunctionAppLatest\FunctionApp1\SkiaTest.cs:line 36
   at SkiaTest.DirectFunctionExecutor.ExecuteAsync(FunctionContext context) in D:\source\FunctionAppLatest\FunctionApp1\obj\Release\net9.0\linux-x64\Microsoft.Azure.Functions.Worker.Sdk.Generators\Microsoft.Azure.Functions.Worker.Sdk.Generators.FunctionExecutorGenerator\GeneratedFunctionExecutor.g.cs:line 37
   at Microsoft.Azure.Functions.Worker.OutputBindings.OutputBindingsMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\_work\1\s\src\DotNetWorker.Core\OutputBindings\OutputBindingsMiddleware.cs:line 13
   at Microsoft.Azure.Functions.Worker.Extensions.Http.AspNetCore.FunctionsHttpProxyingMiddleware.Invoke(FunctionContext context, FunctionExecutionDelegate next) in D:\a\_work\1\s\extensions\Worker.Extensions.Http.AspNetCore\src\FunctionsMiddleware\FunctionsHttpProxyingMiddleware.cs:line 38
   at Microsoft.Azure.Functions.Worker.FunctionsApplication.InvokeFunctionAsync(FunctionContext context) in D:\a\_work\1\s\src\DotNetWorker.Core\FunctionsApplication.cs:line 96 

Version of SkiaSharp

3.116.0 (Current)

Last Known Good Version of SkiaSharp

2.88.7 (Deprecated)

IDE / Editor

Visual Studio (Windows)

Platform / Operating System

Linux

Platform / Operating System Version

Azure Linux Function app - .NET 9.0

Please note this appears to be a .NET 9.0 issue.
SkiaSharp 2.88.7 works fine on .NET 8.0
SkiaSharp 2.887 + fails on .NET 9.0

Devices

Not applicable

Relevant Screenshots

No response

Relevant Log Output

No response

Code of Conduct

• I agree to follow this project's Code of Conduct