Hangfire: update to NET Core 3.0

[ghd258]

update to NET Core 3.0

[odinserj]

I'm not aware of any issues caused by running Hangfire in .NET Core 3.0 applications. It's distributed as a package that includes a netstandard2.0 package that's fully compatible with .NET Core 3.0.

[odinserj]

It even works with the Worker Service template with Hangfire.NetCore package referenced:

using Hangfire;
using Microsoft.Extensions.Hosting;

namespace WorkerService2
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args).Build().Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .ConfigureServices((hostContext, services) =>
                {
                    services.AddHangfire(config => config.UseSqlServerStorage("connection_string"));
                    services.AddHangfireServer();
                });
    }
}

[AutismPatient]

If there is no problem, I use it for the project

[rchybicki]

In version 1.7.7 on netcoreapp3.0 AddHangfireServer() is not available

[odinserj]

@rchybicki, are you sure?

[rchybicki]

@odinserj It's good that you asked, after you wrote I checked again and was able to make it work. For anyone that might encounter the same:
-I updated from 1.6 to 1.7 while updating from netcoreapp 2.2 to 3.0 using paket upgrade.
-I got the services.AddHangfireServer() is unavailable error. I checked that on another project I'm using services.AddHangfireServer() with aspnetcore3 and 1.7.6.
-I downgraded to 1.7.6, still no services.AddHangfireServer()

• I did a "paket clear-cache --clear-local" and "paked upgrade" after, still no go
• I updated paket and redid clear cache and update, voila, it's working on 1.7.7 and netcoreapp3.0.
  My guess is that the older paket version had a problem with .net core 3.0 package resolution

[Goxiaoy]

@odinserj Actually I have some problems after upgrade to .net core 3.0

According to this https://docs.microsoft.com/en-us/aspnet/core/migration/22-to-30?view=aspnetcore-3.0&tabs=visual-studio

There are some packages referenced by Hangfire.AspNetCore never produced after .net core 3.0

    <PackageReference Include="Microsoft.AspNetCore.Hosting.Abstractions" Version="2.0.0" />
    <PackageReference Include="Microsoft.AspNetCore.Http.Abstractions" Version="2.0.0" />
    <PackageReference Include="Microsoft.AspNetCore.Antiforgery" Version="2.0.0" />

And error occurs onced I add Hangfire.AspNetCore to my project

Cannot find reference assembly 'Microsoft.AspNetCore.Antiforgery.dll' file for package Microsoft.AspNetCore.Antiforgery.Reference
    System.InvalidOperationException: Cannot find reference assembly 'Microsoft.AspNetCore.Antiforgery.dll' file for package Microsoft.AspNetCore.Antiforgery.Reference
   at Microsoft.Extensions.DependencyModel.Resolution.ReferenceAssemblyPathResolver.TryResolveAssemblyPaths(CompilationLibrary library, List`1 assemblies)
   at Microsoft.Extensions.DependencyModel.Resolution.CompositeCompilationAssemblyResolver.TryResolveAssemblyPaths(CompilationLibrary library, List`1 assemblies)
   at Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths(ICompilationAssemblyResolver resolver, List`1 assemblies)
   at Microsoft.Extensions.DependencyModel.CompilationLibrary.ResolveReferencePaths()

[Goxiaoy]

Modify Hangfire.AspNetCore.csproj would work

modify

    <TargetFrameworks>net451;net461;netstandard1.3;netstandard2.0;netcoreapp3.0</TargetFrameworks>

add

  <ItemGroup Condition="'$(TargetFramework)'=='netcoreapp3.0'">
    <PackageReference Include="Microsoft.Extensions.DependencyInjection.Abstractions" Version="3.0.0" />
    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="3.0.0" />
  </ItemGroup>

  <ItemGroup Condition="'$(TargetFramework)'=='netcoreapp3.0'">
    <FrameworkReference Include="Microsoft.AspNetCore.App" />
  </ItemGroup>

[drungrin]

I believe you shoud refactor and have the IHostBuilder code on a new nuget package, keeping only the dashboard and aspnet specific stuff on the Hangfire.AspNetCore package, since you can AddHostedService on aspnet core.