How to generate a self-contained HttpApi.Client package for integration services only? #10876

2 Answer(s)

• 

  0

  AI-Bot created 21 days ago

  Support Team ABP Agent

  • In ABP 10.6, the C# proxy generator is not a “dependency graph / transitive closure” generator.
    When you run abp generate-proxy -t csharp ... -st integration, ABP determines the “models to generate” primarily by namespace grouping (service namespace and related model namespaces), not by recursively walking every referenced DTO/enum type across other namespaces. That’s why you see:

    • DTOs in the same namespace getting generated even if not referenced by the integration service signatures, and
    • referenced DTOs/enums from other namespaces not generated, causing compile errors in a standalone HttpApi.Client package.

  • Recommended/supported approach for independently deployed apps (AppA → NuGet → AppB):

    1. Create a dedicated Integration Contracts surface (a stable boundary) and generate/publish the client from that:
       • Put integration service interfaces + integration DTOs/enums into a dedicated project/namespace (e.g. AppA.Integration.Contracts).
       • Keep them separate from internal application DTOs.
       • Generate the C# client proxies from integration services and package them.
    2. If you want to reuse “shared enums” without duplicating, the supported way is to move those shared enums (and any shared DTOs) into a shared contracts assembly that is part of your integration boundary and is published alongside (or referenced by) the client package.
       Practically:
       • Move StatusNumber, NumberType, etc. into something like AppA.Domain.Shared but in an integration-safe namespace/package (or a new AppA.Integration.Shared project).
       • Reference that shared package from both AppA and AppB.
       • Keep the integration DTOs referencing only types from:
         • ABP framework packages, and
         • your published shared integration contracts packages.

  • What you’re doing now (moving Integration services + IntegrationDto into a separate namespace) is essentially the intended boundary.
    The missing piece is: anything used by that boundary must also live in (or be referenced by) that boundary, otherwise the generated client can’t be self-contained because the generator won’t chase types across your whole solution and emit a perfect closure.

  • What not to rely on

    • --without-contracts is for the opposite scenario: it assumes the consumer already references the target service’s *.Application.Contracts package so types are reused (and avoids duplication). It won’t help you make a single self-contained package if you don’t publish those contracts.

  Sources (verified):

  • https://abp.io/docs/10.6/framework/api-development/static-csharp-clients
  • https://abp.io/docs/10.6/release-info/migration-guides/abp-7-0
  • https://abp.io/docs/10.6/release-info/migration-guides/abp-7-4

  ---

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  0

  maliming created 21 days ago

  Support Team Fullstack Developer

  Hi,

  The C# proxy generator picks the DTOs by the namespace prefix of the service class, not by the types your method signatures actually use. That's why DTOs that only share the namespace get generated, and types your contracts depend on but live elsewhere don't. There is no switch to change that today.

  So rather than generating the contracts, publish them - that's what our own modules do. Volo.Abp.Identity.HttpApi.Client references the published Volo.Abp.Identity.Application.Contracts and is generated with --without-contracts, so it carries client proxy classes only and nothing is duplicated.

  For you that is a small AppA.Integration.Contracts project with the two integration service interfaces and their *IntegrationDto types. It references AppA.Domain.Shared, so StatusNumber and NumberType stay exactly where they are - no move, no second declaration. AppA.Application.Contracts references the new project, and you publish AppA.Domain.Shared and AppA.Integration.Contracts next to AppA.HttpApi.Client.

  [DependsOn(
      typeof(AppADomainSharedModule),
      typeof(AbpDddApplicationContractsModule)
  )]
  public class AppAIntegrationContractsModule : AbpModule
  {
  }
  

  In AppA.HttpApi.Client, swap the AppA.Application.Contracts project reference for AppA.Integration.Contracts, replace that one entry in DependsOn and keep the rest, and register the proxies over the contracts assembly:

  [DependsOn(
      typeof(AppAIntegrationContractsModule), // replaces AppAApplicationContractsModule
      typeof(AbpHttpClientModule),
      typeof(AbpIdentityHttpApiClientModule), // the other module dependencies stay as they are
      // ...
  )]
  public class AppAHttpApiClientModule : AbpModule
  {
      public const string RemoteServiceName = "Default";
  
      public override void ConfigureServices(ServiceConfigurationContext context)
      {
          context.Services.AddStaticHttpClientProxies(
              typeof(AppAIntegrationContractsModule).Assembly,
              RemoteServiceName
          );
  
          Configure<AbpVirtualFileSystemOptions>(options =>
          {
              options.FileSets.AddEmbedded<AppAHttpApiClientModule>();
          });
      }
  }
  

  Remove the previously generated files before you regenerate - generate-proxy overwrites and adds, it never removes, so the 73 old DTOs would stay behind and keep producing CS0436. remove-proxy deletes the whole ClientProxies folder, so move any partial proxy class you have customized out of the way first:

  abp remove-proxy -t csharp
  abp generate-proxy -t csharp -u https://localhost:44314/ -m app -st integration --without-contracts
  

  You end up with the two client proxy classes and the proxy json, no DTOs. AppB references AppA.HttpApi.Client and gets the contracts and the enums through it, so there is a single declaration of each enum and no dependency on AppA.Application.Contracts.

  We'll also improve the generator to emit the types a contract actually depends on instead of relying on the namespace grouping.

  Thanks

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