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Dapr + Outbox Event Eto Deserialization error #5596

9 months ago Kysymys

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Provide us with the following info:

ABP Framework version: v7.2
UI Type: Blazor Server
Database System: EF Core ( MySQL )
Tiered (for MVC) or Auth Server Separated (for Angular): yes
Exception message and full stack trace:

System.ArgumentNullException: Value cannot be null. (Parameter 'returnType')
   at System.Text.Json.ThrowHelper.ThrowArgumentNullException(String parameterName)
   at System.Text.Json.JsonSerializer.Deserialize(String json, Type returnType, JsonSerializerOptions options)
   at Volo.Abp.Json.SystemTextJson.AbpSystemTextJsonSerializer.Deserialize(Type type, String jsonString, Boolean camelCase) in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.Json.SystemTextJson\Volo\Abp\Json\SystemTextJson\AbpSystemTextJsonSerializer.cs:line 30
   at Volo.Abp.Dapr.Utf8JsonDaprSerializer.Deserialize(Byte[] value, Type type) in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.Dapr\Volo\Abp\Dapr\Utf8JsonDaprSerializer.cs:line 24
   at Volo.Abp.EventBus.Dapr.DaprDistributedEventBus.PublishManyFromOutboxAsync(IEnumerable`1 outgoingEvents, OutboxConfig outboxConfig) in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.EventBus.Dapr\Volo\Abp\EventBus\Dapr\DaprDistributedEventBus.cs:line 153
   at Volo.Abp.EventBus.Distributed.OutboxSender.PublishOutgoingMessagesInBatchAsync(List`1 waitingEvents) in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.EventBus\Volo\Abp\EventBus\Distributed\OutboxSender.cs:line 128
   at Volo.Abp.EventBus.Distributed.OutboxSender.RunAsync() in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.EventBus\Volo\Abp\EventBus\Distributed\OutboxSender.cs:line 89
   at Volo.Abp.EventBus.Distributed.OutboxSender.RunAsync() in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.EventBus\Volo\Abp\EventBus\Distributed\OutboxSender.cs:line 106
   at Volo.Abp.EventBus.Distributed.OutboxSender.TimerOnElapsed(AbpAsyncTimer arg) in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.EventBus\Volo\Abp\EventBus\Distributed\OutboxSender.cs:line 68
   at Volo.Abp.Threading.AbpAsyncTimer.Timer_Elapsed() in C:\source\AppEngine\AppEngine\abp\framework\src\Volo.Abp.Threading\Volo\Abp\Threading\AbpAsyncTimer.cs:line 105

Steps to reproduce the issue:
- New tierd microservice project
- Outbox configured for the microservice to be tested
- Dapr event bus configured for the microservice
- aggregate root entity that publishes a custom changed event in this microservice
- dapr and sidecar setup for the microservice that has the aggregate root entity
- controller and appservice to update this entity
- using swagger, update the entity
- see that an event is pushed to the outbox
- see logs that now show above error

[Serializable]
public class PaymentTerm_UpdatedEto
{
    public PaymentTerm_UpdatedEto() { }

    public PaymentTerm_UpdatedEto(
        Guid paymentTermId,
        PaymentTermEto oldPaymentTerm,
        PaymentTermEto newPaymentTerm)
    {
        Check.NotDefaultOrNull<Guid>(paymentTermId, nameof(paymentTermId));
        Check.NotNull(oldPaymentTerm, nameof(oldPaymentTerm));
        Check.NotNull(newPaymentTerm, nameof(newPaymentTerm));

        PaymentTermId = paymentTermId;
        OldPaymentTerm = oldPaymentTerm;
        NewPaymentTerm = newPaymentTerm;
    }


    public Guid PaymentTermId { get; set; }

    public PaymentTermEto OldPaymentTerm { get; set; }

    public PaymentTermEto NewPaymentTerm { get; set; }
}

[Serializable]
public class PaymentTermEto
{
    public Guid Id { get; set; }
    public Guid? TenantId { get; set; }

    public string Name { get; set; }
}

public class PaymentTerm :
    AuditedAggregateRoot<Guid>,
    IMultiTenant
{
    public PaymentTerm(
        Guid id,
        string name,
        Guid? tenantId = null)
    {
        Id = id;

        SetName(name);

        TenantId = tenantId;
    }


    public string Name { get; protected set; }

    public Guid? TenantId { get; protected set; }


    private void SetName([NotNull] string name)
    {
        Check.NotNullOrWhiteSpace(name, nameof(name));
        Check.Length(name, nameof(name),
            PaymentTermConsts.NameMaxLength, PaymentTermConsts.NameMinLength);

        //do not trigger Entity changed event if the value is the same
        if (Name?.ToLower() != name.ToLower())
        {
            PaymentTermEto eto = null;
            
            if (Name != null)
                eto = ToEto();

            Name = name;

            if (null != eto)
                PublishChangedEvent(eto);
        }
    }
	
	
	private void PublishChangedEvent(PaymentTermEto old)
    {
        ClearDistributedEvents();

        AddDistributedEvent(new PaymentTerm_UpdatedEto(this.Id, old, this.ToEto()));
    }

    private PaymentTermEto ToEto()
    {
        return new PaymentTermEto
        {
            Id = Id,
            TenantId = TenantId,
            Name = Name
        };
    }

}

If i do not use the outbox the event is pushed correctly over the dapr bus. Zipkin shows this.

any help is appreciated, thank you for your time

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