Onresume not fires and Workflow remains suspended

Hi,

I created a solution based on the tutorial on https://medium.com/codex/part-6-of-building-workflow-driven-net-applications-with-elsa-2-9b3167c612dd .

At the Updateblockchain step workflow remains suspended.

Source code is DocumentManagement.zip

Thanks…

`

namespace DocumentManagement.Workflows.Activities { [Activity( Category = “Document Management”, Description = “Saves a hash of the specified file onto the blockchain to prevent tampering.” )] public class UpdateBlockchain : Activity { public record UpdateBlockchainContext(string WorkflowInstanceId, string ActivityId, string FileSignature);

    private readonly IBackgroundJobClient _backgroundJobClient;
    private readonly IWorkflowInstanceDispatcher _workflowInstanceDispatcher;

    public UpdateBlockchain(IBackgroundJobClient backgroundJobClient, IWorkflowInstanceDispatcher workflowInstanceDispatcher)
    {
        _backgroundJobClient = backgroundJobClient;
        _workflowInstanceDispatcher = workflowInstanceDispatcher;
    }

    [ActivityInput(
        Label = "File",
        Hint = "The file to store its hash of onto the blockchain. Can be byte[] or Stream.",
        SupportedSyntaxes = new[] { SyntaxNames.JavaScript, SyntaxNames.Liquid },
        DefaultWorkflowStorageProvider = TransientWorkflowStorageProvider.ProviderName
    )]
    public object File { get; set; } = default!;

    [ActivityOutput(Hint = "The computed file signature as stored on the blockchain.")]
    public string Output { get; set; } = default!;

    /// <summary>
    /// Invoked by Hangfire as a background job.
    /// </summary>
    public async Task SubmitToBlockChainAsync(UpdateBlockchainContext context, CancellationToken cancellationToken)
    {
        // Simulate storing it on an imaginary blockchain out there.
        await Task.Delay(TimeSpan.FromSeconds(15), cancellationToken);

        // Resume the suspended workflow.
        await _workflowInstanceDispatcher.DispatchAsync(new ExecuteWorkflowInstanceRequest(context.WorkflowInstanceId, context.ActivityId, new WorkflowInput(context.FileSignature)), cancellationToken);
    }

    protected override async ValueTask<IActivityExecutionResult> OnExecuteAsync(ActivityExecutionContext context)
    {
        // Compute hash.
        var bytes = File is Stream stream ? await stream.ReadBytesToEndAsync() : File is byte[] buffer ? buffer : throw new NotSupportedException();
        var fileSignature = ComputeSignature(bytes);

        // Schedule background work using Hangfire.
        _backgroundJobClient.Enqueue(() => SubmitToBlockChainAsync(new UpdateBlockchainContext(context.WorkflowInstance.Id, context.ActivityId, fileSignature), CancellationToken.None));

        // Suspend the workflow.
        return Suspend();
    }

    protected override IActivityExecutionResult OnResume(ActivityExecutionContext context)
    {
        // When we resume, simply complete this activity.
        var fileSignature = context.GetInput<string>();
        Output = fileSignature;
        return Done();
    }

    private static string ComputeSignature(byte[] bytes)
    {
        using var algorithm = SHA256.Create();
        var hashValue = algorithm.ComputeHash(bytes);
        return Convert.ToBase64String(hashValue);
    }
}

}`

[sfmskywalker]

I’ll take a look as soon as I can, this issue is on my shortlist for this week.

[osmankoc]

Hello there.

I took a break for workflows for some time. Today i gave another try on this issue, and finally found the problem. The issue is probably lowercase to create job que name is working according to local culture.

execute-workflow-ınstance-request-default

{“WorkerCount”:1,“Queues”:[“default”,“trigger-workflows-request”,“execute-workflow-definition-request-default”,“execute-workflow-ınstance-request-default”],“StartedAt”:“2023-07-28T14:25:49.0071871Z”}

after i addd this line at the top of the Program.cs it worked well.

Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.InvariantCulture;