Activities of "AI-Bot"

• There is a confirmed performance regression in ABP 9.2.x related to tracking many-to-many navigation properties with large collections, as you described. The issue is specifically triggered when using .Include(x => x.PartnerStudents) with tracking enabled. This is likely due to recent changes in ABP's internal entity tracking and navigation property handling (notably in AbpEfCoreNavigationHelper and AbpEntityEntry).

• As you observed, using .AsNoTracking() avoids the problem, but this is not always a viable workaround if you require change tracking.

• The regression does not exist in 9.0.x, and replacing the affected services with 9.0 versions restores normal performance, confirming the root cause is in the ABP 9.2 changes.

Recommended Actions:

1. Review the official ABP 9.2 migration guide and release notes for any related breaking changes or known issues:

   • ABP 9.2 Migration Guide
   • ABP 9.2 Community Article

2. If you require tracking and cannot use .AsNoTracking(), consider temporarily reverting to ABP 9.0.x for affected DbContext/services until a fix is released.

3. Report the issue with a minimal reproducible example to the ABP GitHub repository if you have not already, to help the team prioritize a fix.

4. Monitor the ABP release notes and GitHub issues for updates regarding this regression.

Sources:

• ABP 9.2 Migration Guide
• ABP 9.2 Community Article

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To implement distributed locking in ABP Framework, you should use the IAbpDistributedLock interface, which is typically backed by Redis. Your usage of TryAcquireAsync is correct, but there are a few important points to ensure the lock works as expected:

1. Make sure you are not using the same Redis instance for both cache and lock with conflicting key prefixes.
2. The lock key must be unique per resource and user to avoid collisions.
3. The lock timeout (TimeSpan.FromSeconds(1)) may be too short if your operation takes longer than 1 second. If the lock is released before the operation completes, concurrent requests can enter the critical section.
4. Always check for null on the handle to confirm the lock was acquired.

Here is a recommended pattern for distributed locking in ABP:

public class MyService : ITransientDependency
{
    private readonly IAbpDistributedLock _distributedLock;

    public MyService(IAbpDistributedLock distributedLock)
    {
        _distributedLock = distributedLock;
    }

    public async Task<IActionResult> InsertFormAnswerJson(Guid id, [FromBody] JsonElement json)
    {
        var currentUserId = _currentUser.Id;
        if (currentUserId == null)
        {
            return Unauthorized();
        }

        var lockKey = $"form-submission-lock:{currentUserId}:{id}";

        // Set a reasonable timeout for the lock
        await using var handle = await _distributedLock.TryAcquireAsync(lockKey, TimeSpan.FromSeconds(30));
        if (handle == null)
        {
            _logger.LogInformation($"form-submission[duplicate]:{currentUserId}:{id}");
            return StatusCode(429, "Duplicate submission detected. Please wait a moment before retrying.");
        }

        try
        {
            _logger.LogInformation($"form-submission:{currentUserId}:{id}");
            await _resultAnswerService.SaveUserAnswerAsync(id, currentUserId.Value, json.GetRawText());
            return Ok();
        }
        catch (Exception)
        {
            return StatusCode(500, "An error occurred while processing your submission.");
        }
    }
}

Key points:

• Increase the lock timeout to cover the maximum expected processing time.
• Do not use the distributed cache as a lock mechanism; use IAbpDistributedLock for locking.
• Ensure your Redis connection is stable and not shared with other applications that may interfere with keyspace.

If you still experience issues, verify your Redis server is accessible and not dropping connections, and that your ABP Redis configuration is correct.

Sources:

• https://abp.io/docs/latest/solution-templates/microservice/distributed-locking

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You can view questions asked by various users on the ABP support forum by visiting the official support questions page:

• https://abp.io/support/questions

On this page, you can browse, search, and filter questions. While there is no explicit "popularity" or "most engaged" filter, you can sort questions by views, votes, or recent activity to find those that have received high engagement and are popular among the community.

Sources:

• https://abp.io/support/questions

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Currently, there is no official, publicly available ABP AI agent or chatbot that you can interact with directly for support or technical questions outside of the existing ABP support channels. The AI-powered solutions and integrations described in ABP documentation and community articles are examples and guides for integrating AI (such as OpenAI or Semantic Kernel) into your own ABP-based applications, not a standalone ABP support chatbot for public use.

If you are interested in adding AI chat capabilities to your own ABP application, you can follow these guides to build an AI assistant within your project:

• Integrate the .NET AI Chat Template with ABP: This allows you to add a chat interface powered by AI models to your ABP app.
• Use OpenAI API with ABP Framework: Step-by-step instructions for connecting OpenAI services to your ABP solution.
• Integrate Semantic Kernel with ABP: For advanced AI plugin and assistant scenarios.

For now, ABP's official support and Q&A channels remain the primary way to get direct answers to your questions.

Sources:

• https://abp.io/community/articles/qavb5p2j
• https://abp.io/community/articles/rsfvihla
• https://abp.io/community/articles/qo5cnuzs

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• You cannot directly add a new entity (i.e., generate the entity class and all related files from scratch) using only ABP CLI commands. The ABP CLI is primarily used for project scaffolding, managing modules, and running code generation tasks that are based on existing entity definitions (such as generating CRUD pages or services for entities you have already defined).

• The ABP Suite and ABP Studio provide a visual interface to define new entities, their properties, and relationships, and then generate all necessary code (entity, DTOs, application services, UI, etc.). The ABP CLI does not fully replicate this functionality. For example, the CLI can generate CRUD pages for an entity if you provide a JSON definition (usually created by Suite), but it does not have a command to define a new entity interactively or via command line parameters in the same way Suite does.

• To generate CRUD pages via CLI, you must first define your entity (typically using Suite or manually), then use a command like:

abp suite generate --entity D:\Projects\BookStore.suite\entities\Book.json --solution D:\Projects\BookStore\Acme.Bookstore.sln

  This command generates CRUD pages for an existing entity definition.

- In summary: ABP CLI does not provide all the features of ABP Suite/Studio, especially for interactive entity creation. It is mainly used for automation and code generation based on existing definitions.

Sources:
- https://abp.io/docs/latest/cli/index
- https://abp.io/docs/latest/suite/generating-crud-page
- https://abp.io/docs/latest/cli/differences-between-old-and-new-cli

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_This response was generated by AI. If it didn’t solve your problem, feel free to post a new answer — our support team will jump in to help you soon._

To resolve the "A possible object cycle was detected" error during external login in ABP, you need to configure the JSON serializer to handle object cycles. In .NET, this is typically done by setting ReferenceHandler.Preserve on JsonSerializerOptions. In ABP Blazor WASM projects, you can configure this globally for your application.

Here is an example of how to configure the JSON serializer to use ReferenceHandler.Preserve in your Blazor WASM project:

1. Configure in Program.cs (Blazor WASM Client):

using System.Text.Json; using System.Text.Json.Serialization;

builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) });

builder.Services.Configure

2. **Configure in Startup (Server Side, if applicable):**

   If you have a server-side (API) project, configure the JSON options in `Startup.cs` or `Program.cs`:

   ```csharp
services.AddControllers()
       .AddJsonOptions(options =>
       {
           options.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.Preserve;
           options.JsonSerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
       });

3. Restart your application after making these changes.

This configuration will allow the serializer to handle object cycles and prevent the exception you encountered.

Sources:

• ABP Support: A cycle during the cache serialization
• Microsoft Docs: ReferenceHandler.Preserve

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• The [InterceptedBy] attribute is not available in ABP 9.1.0, and AbpCastleProxyOptions has been removed in recent ABP versions.
• The recommended way to apply a custom interceptor to specific services or methods in ABP 9.1.0 is to register your interceptor globally and, inside your interceptor logic, check for the presence of your custom attribute (as you are already doing). This allows you to conditionally execute logic only for methods or classes marked with your attribute.
• Conditional registration of interceptors based on a custom attribute is not natively supported in ABP 9.1.0. Instead, you must use the pattern you have implemented: register the interceptor for all services, and inside the interceptor, check for your custom attribute before executing your logic.

Your current approach—checking for the attribute within the interceptor—is the correct and supported method in ABP 9.1.0.

No verified source available for this specific query.

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• The error you are experiencing on the standard ABP Audit Log Blazor page is caused by a NullReferenceException in the HttpMethodColumnComponent. This typically happens when the component tries to access a property or value that is unexpectedly null in the audit log data.

• This issue is often related to missing or null values in the audit log records, especially for fields like HttpMethod. In ABP, some audit log entries (such as those created for background jobs, event handlers, or internal processes) may not have HTTP context, resulting in null values for HttpMethod or related fields.

• The ABP Framework intentionally allows these fields to be nullable, as not all audit logs are tied to HTTP requests. If you want to avoid this error, you should update your UI or customize the component to handle null values gracefully. For example, you can check for null before rendering the HTTP method or display a placeholder (like "-") when the value is missing.

• Alternatively, you can create a custom audit log contributor or configure AbpAuditingOptions to filter out or handle such cases. See the official documentation for more details:

  • https://abp.io/docs/latest/modules/audit-logging
  • https://abp.io/support/questions/9397

• This is not a database or configuration issue, but a UI rendering issue due to unhandled nulls in the standard component. Customizing the component to check for nulls will resolve the random error.

Sources:

• https://abp.io/docs/latest/modules/audit-logging
• https://abp.io/support/questions/9397

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To revoke (invalidate) a token using the /connect/revocation endpoint in ABP's OpenIddict integration, you must enable the persistent token feature. By default, OpenIddict does not persist tokens unless you configure it to do so. Without persistence, the revocation endpoint cannot find and invalidate the token, so the token remains valid even though the endpoint returns a 200 status code.

Key Points:

• Token revocation requires token persistence. You need to enable the OpenIddict token storage feature so that tokens are saved in the database.
• If you do not enable persistence, the /connect/revocation endpoint cannot actually revoke tokens, even though it returns a success response.
• There is no supported way to revoke tokens without persistence, and you do not need to convert the token into a Guid. The persistence mechanism handles token identification and revocation.

How to enable token persistence:

1. Ensure you have installed the OpenIddict Entity Framework Core stores or another supported store.
2. Configure OpenIddict to use the token store in your module:

services.AddOpenIddict()
       .AddCore(options =>
       {
           options.UseEntityFrameworkCore()
                  .UseDbContext<YourDbContext>();
       });

3. Run the necessary database migrations to create the token tables.

After enabling persistence, token revocation via /connect/revocation will work as expected.

Sources:

• https://abp.io/docs/latest/modules/openiddict

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• This error typically occurs when there is a problem with authentication or license validation while downloading ABP Commercial module source code (such as LeptonX Pro) using ABP Suite or the CLI. The error message "'<' is an invalid start of a value" usually means that an HTML error page (often a 403 Forbidden or similar) was returned instead of the expected JSON, which is often due to a failed authentication or expired/invalid license.

• To resolve this issue, follow these steps:

  1. Run abp logout in your terminal to clear any cached credentials.
  2. Run abp login and authenticate again with your valid ABP Commercial credentials.
  3. Retry the source code download using Suite or the CLI.

• If you are still unable to download the source code after re-authenticating, ensure that:

  • Your ABP Commercial license is active and valid for the LeptonX Pro module.
  • You are using the correct module name and version (matching your license and project version).
  • There are no network issues or firewalls blocking access to abp.io.

• If the problem persists after these steps, please contact Volosoft support directly with your license details for further assistance.

Sources:

• https://abp.io/docs/latest/ui-themes/lepton-x/mvc
• https://abp.io/docs/latest/ui-themes/lepton/

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