PdfGenerationCommandHandlerApproach2.cs

public class PdfGenerationRequestHandler : IRequestHandler<PdfGenerationCommand, PdfGenerationResponse>
{
    private readonly IPdfGenerator _pdfGenerator;

    public PdfGenerationRequestHandler(IPdfGenerator pdfGenerator)
    {
        _pdfGenerator = pdfGenerator;
    }

    public async Task<PdfGenerationResponse> Handle(PdfGenerationCommand command, CancellationToken cancellationToken, IProgress<int> progress)
    {
        // Generate the PDF using the provided HTML content
        var pdfBytes = await _pdfGenerator.GeneratePdfAsync(command.HtmlContent);

        // Generate a unique document ID
        var documentId = Guid.NewGuid().ToString();

        // Return the PDF content and document ID in the response
        return new PdfGenerationResponse
        {
            PdfContent = pdfBytes,
            DocumentId = documentId
        };
    }
}
public class PdfGenerationCommandHandler : CommandHandler<PdfGenerationCommand>
{
    private readonly IRequestHandler<PdfGenerationCommand, PdfGenerationResponse> _requestHandler;
    private CancellationTokenSource _cancellationTokenSource;

    public PdfGenerationCommandHandler(IRequestHandler<PdfGenerationCommand, PdfGenerationResponse> requestHandler)
    {
        _requestHandler = requestHandler;
    }

    public override async Task Handle(PdfGenerationCommand command)
    {
        // Create a CancellationTokenSource and pass its token to the request handler
        _cancellationTokenSource = new CancellationTokenSource();
        var token = _cancellationTokenSource.Token;

        var response = await _requestHandler.Handle(command, token, null);

        // Pass the response to the calling process via the output pipe
        var serializedResponse = JsonConvert.SerializeObject(response);
        await Console.Out.WriteLineAsync(serializedResponse);
    }

    public override void Cancel()
    {
        // Cancel the operation by cancelling the token source
        _cancellationTokenSource?.Cancel();
    }
}