Stratara.Validation 3.1.3

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package Stratara.Validation --version 3.1.3
                    


                    

                
NuGet\Install-Package Stratara.Validation -Version 3.1.3
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Stratara.Validation" Version="3.1.3" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Stratara.Validation" Version="3.1.3" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Stratara.Validation" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Stratara.Validation --version 3.1.3
                    


                    

                
#r "nuget: Stratara.Validation, 3.1.3"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Stratara.Validation@3.1.3
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Stratara.Validation&version=3.1.3
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Stratara.Validation&version=3.1.3
                    


                            Install as a Cake Tool

Stratara.Validation

License: FSL-1.1-MIT (Functional Source License — source-available; converts to MIT after 2 years). Not OSI-approved OSS.

Vendor-neutral request validation for Stratara's CQRS pipeline. A mediator pipeline behavior runs your IValidator<T> implementations before the handler and throws an aggregated StrataraValidationException when validation fails — no third-party validation dependency in the default path.

Quick start

// 1. Register the behavior (outermost) + discover validators.
builder.Services
    .AddStrataraValidation()
    .AddValidatorsFromAssemblyContaining<IAppMarker>();

// 2. Write a validator (the contracts live in Stratara.Abstractions.Validation).
public sealed class CreateOrderValidator : IValidator<CreateOrder>
{
    public ValueTask<ValidationResult> ValidateAsync(CreateOrder cmd, CancellationToken ct = default)
        => ValueTask.FromResult(string.IsNullOrWhiteSpace(cmd.CustomerId)
            ? new ValidationResult([new ValidationFailure(nameof(cmd.CustomerId), "Customer is required.")])
            : ValidationResult.Success);
}

// 3. Catch the failure in your global handler and map it to your error model.
catch (StrataraValidationException ex)
{
    // ex.Failures -> RFC-7807 ProblemDetails 400, your error codes, etc.
}

How it works

  • AddStrataraValidation() registers IPipelineBehavior for both request shapes (IRequest and IRequest<TResult>). Register it before other behaviors so validation runs outermost — before authorization, auditing, and the handler.
  • All validators for a request run; their failures are aggregated.
  • Severity policy: only ValidationSeverity.Error blocks (throws StrataraValidationException). Warning and Info failures pass through and are logged.

Contracts

The validation contracts (IValidator<T>, ValidationResult, ValidationFailure, ValidationSeverity, StrataraValidationException) live in Stratara.Abstractions (namespace Stratara.Abstractions.Validation) so consumers can implement validators and catch the exception without referencing this behavior package.

The contract shape is FluentValidation-compatible; an optional Stratara.Validation.FluentValidation adapter can be shipped to plug FluentValidation validators into the same pipeline.

Dependencies

  • Stratara.Abstractions
  • Stratara.Mediator
  • Stratara.Diagnostics
  • Microsoft.Extensions.DependencyInjection.Abstractions
  • Microsoft.Extensions.Logging.Abstractions
Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
3.1.3 0 6/10/2026
3.1.2 60 6/5/2026
3.1.1 574 6/1/2026
3.1.0 86 5/30/2026

### Added

- **Mediator tenant-isolation behavior** (`Stratara.Mediator`) — `AddStrataraTenantIsolation()`
 registers a pipeline behavior that enforces tenant isolation at the mediator entrance, before the
 handler runs, for any request that opts in via the new `ITenantScopedRequest` marker
 (`Stratara.Abstractions.Multitenancy`). The behavior compares the request's `TenantId` (data owner)
 against the ambient session's data-owner tenant and rejects a mismatch with the new
 `TenantAccessDeniedException` (translated to HTTP 403 on ASP.NET hosts). `TenantIsolationMode.Default`
 enforces only the subject match (privileged cross-tenant operations pass when the endpoint promoted
 the session subject to the target); `TenantIsolationMode.Strict` additionally routes every
 cross-tenant operation through the new `ICrossTenantAuthorizer`, whose shipped default denies all
 cross-tenant access until a consumer registers its own authorizer. Complements the existing
 database-side `ApplyGlobalTenantQueryFilters` with a command-/query-entrance guard. New log-event
 IDs `114_101`/`114_102`/`114_003` in `Stratara.Diagnostics`.
- **`Stratara.Abstractions.Persistence.ConcurrencyConflictException`** — provider-agnostic
 wrapper for an optimistic-concurrency conflict detected during commit. Allows framework-level
 code in `Stratara.Projections` (and any consumer outside the `EntityFrameworkCore` package) to
 react to concurrency without taking an EF Core dependency. EF Core's `DbUpdateConcurrencyException`
 (and provider equivalents) flow through this type.

### Changed

- **`EfTransaction.SaveChangesAsync`** (in `Stratara.EventSourcing.EntityFrameworkCore`) now
 wraps `DbUpdateConcurrencyException` thrown by EF Core in the new
 `ConcurrencyConflictException`. PostgreSQL unique-violation paths remain on `DbUpdateException`
 (different semantics — duplicate-key on insert vs. stale-row on update/delete).
- **`EventSource.SaveChangesAsync`** (write-side append flow) extends its concurrency-handling
 catch to the new exception type so the existing append-conflict recovery path keeps working
 after the wrap. Behaviour for both EF concurrency conflicts and PostgreSQL unique violations
 is unchanged.

### Fixed

- **`TenantProjection` no longer aborts the event bundle on a parallel delete race.** The two
 delete handlers (`TenantDeleted`, `CustomerTenantsDeleted`) now swallow
 `ConcurrencyConflictException` silently — a missing row is the desired end-state of a delete.
 Before this fix, a consumer-side customer-delete cascade saga that emits both
 `CustomerTenantsDeleted` and a follow-up `TenantDeleted` for the same tenants would race the
 two parallel projection bundles on the same `TenantView` row; the loser threw
 `DbUpdateConcurrencyException` out of `SaveChangesAsync`, which propagated through
 `ProjectionWorker` and caused `RabbitMqBus` to roll back the entire bundle — including
 sibling projections that had already committed. Update handlers (rename / activate /
 deactivate / locale / customer-assigned) keep their current behaviour: a concurrency failure
 there is a real race that propagates.