Compiler Warning ASPIREEXPORT006

Version introduced: 13.2

Type '{0}' in [AspireUnion] is not ATS-compatible. Use primitive types, enums, or supported Aspire types.

This diagnostic warning is reported when one or more types specified in an [AspireUnion] attribute cannot be represented across language boundaries by the Aspire Type Specification (ATS). All types in a union must be ATS-compatible (primitive types, enums, or supported Aspire types) so that they can be expressed in generated code for other language runtimes.

Example

The following code generates ASPIREEXPORT006:

[AspireExport("addResource")]
public static IResourceBuilder<ContainerResource> AddResource(
    IDistributedApplicationBuilder builder,
    [AspireUnion(typeof(string), typeof(Func<string>))] object name)  // Func<string> is not ATS-compatible
{
    return builder.AddContainer(name.ToString()!, "myimage");
}

To correct this warning

Replace the incompatible type in the union with an ATS-compatible type:

[AspireExport("addResource")]
public static IResourceBuilder<ContainerResource> AddResource(
    IDistributedApplicationBuilder builder,
    [AspireUnion(typeof(string), typeof(int))] object name)
{
    return builder.AddContainer(name.ToString()!, "myimage");
}

Suppress the warning

Suppress the warning with either of the following methods:

• Set the severity of the rule in the .editorconfig file.

  [*.{cs,vb}]
  dotnet_diagnostic.ASPIREEXPORT006.severity = none

  For more information about editor config files, see Configuration files for code analysis rules.

• Add the following PropertyGroup to your project file:

  <PropertyGroup>
      <NoWarn>$(NoWarn);ASPIREEXPORT006</NoWarn>
  </PropertyGroup>