Synchrounous communication between services #10013

3 Answer(s)

• 

  0

  AI-Bot created yesterday

  Support Team ABP Agent

  To enable synchronous communication between services in ABP (such as calling DocumentService from InvoiceService), you must reference the correct modules and configure dependencies as described in the official guide.

  Based on your error, the problem is that the dependency injection system cannot resolve the IDocumentsAppService in your InvoiceManager. This typically means the HttpApi.Client module for DocumentService is not referenced or registered properly in InvoiceService.

  Here is the correct approach, following the official documentation:

  1. Reference the HttpApi.Client Project
     • In your InvoiceService.Application (or equivalent) project, add a reference to the DocumentService.HttpApi.Client project:

  <ProjectReference Include="..\..\..\document\src\DocumentService.HttpApi.Client\DocumentService.HttpApi.Client.csproj" />
  

  2. Add Module Dependency
     • In your InvoiceServiceApplicationModule, add a dependency on the DocumentServiceHttpApiClientModule:

  [DependsOn(
           typeof(DocumentServiceHttpApiClientModule)
       )]
       public class InvoiceServiceApplicationModule : AbpModule
       {
           // ...
       }
  

  • The guide's reference to ProductServiceHttpApiClientModule is just an example. You should use the actual module class from your DocumentService.HttpApi.Client project, which is typically named DocumentServiceHttpApiClientModule.

  3. Configure Remote Service Endpoints
     • In your InvoiceService.HttpApi.Host's appsettings.json, configure the remote service endpoint for DocumentService:

  "RemoteServices": {
         "Default": {
           "BaseUrl": "https://your-document-service-url/"
         }
       }
  

  4. Do Not Use Contracts Module for Remote Calls

     • The Contracts module (DocumentServiceContractsModule) is for sharing DTOs and interfaces, not for enabling remote HTTP calls. You must use the HttpApi.Client module for remote service proxies.

  5. Rebuild and Restart

     • After making these changes, rebuild your solution and restart the services.

  If you follow these steps and ensure the correct module is referenced and registered, the DI system will be able to resolve IDocumentsAppService as a dynamic HTTP proxy, and your error should be resolved.

  Sources:

  • Synchronous Interservice Communication (ABP Docs)

  ---

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• 

  0

  carl.hallqvist created yesterday

  I dont have any DocumentService.HttpApi.Client project. Only DocumentService, and since we are using multiple repos (InvoiceService and DocumentService are separated in different Git repos), we would rather not include the DocuemntService code in the InvoiceSerivce repo.

  Best regards,

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• 

  0

  maliming created 19 hours ago

  Support Team Fullstack Developer

  hi

  Could you share some code to help us understand your case?

  You can use Static C# API Client Proxies between your services.

  https://abp.io/docs/latest/framework/api-development/static-csharp-clients?_redirected=B8ABF606AA1BDF5C629883DF1061649A

  Thanks.

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