ISB003 Exported brokered services are valid

When a type is annotated with the [ExportBrokeredService] attribute, certain rules must be followed.

In particular, any such type must implement the IExportedBrokeredService interface.

Examples of patterns that are flagged by this analyzer

The following code generates a diagnostic.

[ExportBrokeredService("name", "1.0")]
class Foo
{
}

Solution

Fix the error by implementing the IExportedBrokeredService interface.

[ExportBrokeredService("name", "1.0")]
class Foo : IExportedBrokeredService
{
    ServiceRpcDescriptor IExportedBrokeredService.Descriptor { get; } = new ServiceJsonRpcDescriptor(
        new ServiceMoniker("CallBackService", new Version(0, 1)),
        ServiceJsonRpcDescriptor.Formatters.UTF8,
        ServiceJsonRpcDescriptor.MessageDelimiters.HttpLikeHeaders);

    Task IExportedBrokeredService.InitializeAsync(CancellationToken cancellationToken) => Task.CompletedTask;
}