How to Upsert and Remove Obsolete Permissions During the Seed Operation in ABP? #10354

3 Answer(s)

• 

  0

  AI-Bot created 7 hours ago

  Support Team ABP Agent

  1. Solution

  ABP does not provide a built‑in “synchronize / upsert and delete obsolete” helper for permission grants, but it is straightforward to implement on top of the existing permission management APIs.

  The recommended approach for seeding permissions is:

  • Use an IDataSeedContributor.
  • Use IPermissionDefinitionManager (and/or your own configuration) to know which permissions should be granted.
  • Use IPermissionGrantRepository (or IPermissionGrantStore / IPermissionManager) to:
    • Read current grants for a given provider (e.g. a role or user) and tenant.
    • Insert missing grants.
    • Delete obsolete grants that are not in your current desired set.

  Below is an example that performs full synchronization (“database must equal seed definition”) for a given role.

  1.1. Define the desired permission set

  Typically, you maintain the desired permissions in code (constants, config, etc.):

  public static class MyPermissionSeed
  {
      // Permission names; these should exist as defined permissions
      public static readonly string[] AdminRolePermissions =
      {
          "MyApp.Permissions.UserManagement",
          "MyApp.Permissions.Reports.View",
          "MyApp.Permissions.Reports.Edit",
          // ...
      };
  
      public const string ProviderName = "R"; // "R" = Role (same as RolePermissionValueProvider.ProviderName)
      public const string AdminRoleName = "admin"; // or your own role name
  }
  

  Note: For role permission provider name, ABP uses RolePermissionValueProvider.ProviderName (usually "R").

  1.2. Implement a syncing IDataSeedContributor

  This contributor will be executed by your DbMigrator and will:

  1. Resolve the admin role id.
  2. Load all existing permission grants for this role.
  3. Add missing ones.
  4. Delete obsolete ones.

  using System;
  using System.Collections.Generic;
  using System.Linq;
  using System.Threading.Tasks;
  using Volo.Abp.Data;
  using Volo.Abp.DependencyInjection;
  using Volo.Abp.PermissionManagement;
  using Volo.Abp.Uow;
  using Volo.Abp.Users;
  using Volo.Abp.MultiTenancy;
  
  public class PermissionSyncDataSeedContributor :
      IDataSeedContributor,
      ITransientDependency
  {
      private readonly IPermissionGrantRepository _permissionGrantRepository;
      private readonly IUnitOfWorkManager _unitOfWorkManager;
      private readonly IPermissionDefinitionManager _permissionDefinitionManager;
      private readonly ICurrentTenant _currentTenant;
      private readonly IRoleIdLookupService _roleIdLookupService; 
      // You can implement this or just use IdentityRoleManager directly.
  
      public PermissionSyncDataSeedContributor(
          IPermissionGrantRepository permissionGrantRepository,
          IUnitOfWorkManager unitOfWorkManager,
          IPermissionDefinitionManager permissionDefinitionManager,
          ICurrentTenant currentTenant,
          IRoleIdLookupService roleIdLookupService)
      {
          _permissionGrantRepository = permissionGrantRepository;
          _unitOfWorkManager = unitOfWorkManager;
          _permissionDefinitionManager = permissionDefinitionManager;
          _currentTenant = currentTenant;
          _roleIdLookupService = roleIdLookupService;
      }
  
      public async Task SeedAsync(DataSeedContext context)
      {
          // If you have multi-tenancy, you may want to loop tenants.
          using var uow = _unitOfWorkManager.Begin(requiresNew: true, isTransactional: true);
  
          // Resolve the role id (provider key) for the admin role
          var adminRoleId = await _roleIdLookupService.GetRoleIdByNameAsync(
              MyPermissionSeed.AdminRoleName,
              context.TenantId);
  
          if (adminRoleId == null)
          {
              await uow.CompleteAsync();
              return; // role not found; nothing to do
          }
  
          var providerName = MyPermissionSeed.ProviderName;
          var providerKey = adminRoleId.ToString();
  
          // 1) Desired set from seed (filter out undefined permissions just in case)
          var allPermissionDefinitions = await _permissionDefinitionManager.GetPermissionsAsync();
          var validPermissionNames = new HashSet<string>(
              allPermissionDefinitions.Select(p => p.Name)
          );
  
          var desiredPermissionNames = MyPermissionSeed.AdminRolePermissions
              .Where(validPermissionNames.Contains)
              .ToHashSet();
  
          // 2) Load current grants for this provider (role) & tenant
          var currentGrants = await _permissionGrantRepository.GetListAsync(
              name: null,
              providerName: providerName,
              providerKey: providerKey,
              tenantId: context.TenantId
          );
  
          var currentPermissionNames = currentGrants
              .Select(g => g.Name)
              .ToHashSet();
  
          // 3) Determine which to add and which to delete
          var toAdd = desiredPermissionNames.Except(currentPermissionNames).ToList();
          var toDelete = currentPermissionNames.Except(desiredPermissionNames).ToList();
  
          // 4) Insert missing
          foreach (var permissionName in toAdd)
          {
              await _permissionGrantRepository.InsertAsync(
                  new PermissionGrant(
                      GuidGenerator.Create(),
                      permissionName,
                      providerName,
                      providerKey,
                      context.TenantId
                  ),
                  autoSave: false
              );
          }
  
          // 5) Delete obsolete
          if (toDelete.Any())
          {
              foreach (var permissionName in toDelete)
              {
                  var grant = currentGrants.FirstOrDefault(g => g.Name == permissionName);
                  if (grant != null)
                  {
                      await _permissionGrantRepository.DeleteAsync(grant, autoSave: false);
                  }
              }
          }
  
          await uow.CompleteAsync();
      }
  }
  

  Important points:

  • Upsert behaviour:
    • “Insert” is handled by creating new PermissionGrant entities for the toAdd list.
    • “Update” is usually not needed because a grant record is just “permission granted”; if it exists, it’s already “true”.
  • Delete obsolete: we compute toDelete and remove those grants.
  • Multi‑tenancy:
    • Use DataSeedContext.TenantId to seed per tenant.
    • If you want to seed all tenants from host side, resolve tenant list and call SeedAsync (or the inner logic) for each.

  1.3. Role Id Lookup example

  You can use IdentityRoleManager (from Volo.Abp.Identity) to find the role id, wrapped in a small service:

  using System;
  using System.Threading.Tasks;
  using Volo.Abp.Identity;
  
  public interface IRoleIdLookupService
  {
      Task<Guid?> GetRoleIdByNameAsync(string roleName, Guid? tenantId);
  }
  
  public class RoleIdLookupService : IRoleIdLookupService
  {
      private readonly IdentityRoleManager _roleManager;
  
      public RoleIdLookupService(IdentityRoleManager roleManager)
      {
          _roleManager = roleManager;
      }
  
      public async Task<Guid?> GetRoleIdByNameAsync(string roleName, Guid? tenantId)
      {
          var role = await _roleManager.FindByNameAsync(roleName);
          return role?.Id;
      }
  }
  

  You can simplify this and inject IdentityRoleManager directly into the seed contributor if you prefer.

  1.4. Where to place it

  • Place your PermissionSyncDataSeedContributor in a Domain project (e.g., *.Domain).
  • Ensure the DbMigrator project references the module that contains this contributor and the permission definitions (usually *.Application.Contracts or *.Domain.Shared for definitions).

  ---

  2. Sources

  • Data seeding infrastructure and IDataSeedContributor in ABP:
    https://abp.io/docs/latest/framework/infrastructure/data-seeding

  • ABP’s own permission seeding pattern (PermissionDataSeedContributor):
    https://github.com/abpframework/abp/blob/e3e1779de6df5d26f01cdc8e99ac9cbcb3d24d3c/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/PermissionDataSeedContributor.cs#L26

  ---

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• 

  0

  tufan.dayi created 6 hours ago

  Hello,

  While researching this topic, we found your previous answer in (https://abp.io/support/questions/7941/Permissions-update-and-delete) this support question.

  However, after trying the suggestions mentioned there, we were unfortunately not able to achieve the desired result.

  Thanks.

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• 

  0

  maliming created 5 hours ago

  Support Team Fullstack Developer

  hi

  Add or update all permissions present in the new seed data set (insert/update)

  You can inject the IPermissionGrantRepository to add new permissions.

  See https://github.com/abpframework/abp/blob/dev/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/PermissionDataSeeder.cs

  Delete obsolete permissions from the database—meaning, any permission record that existed previously but is no longer defined in the current seed set should be removed automatically.

  You can inject the IPermissionManager to delete permissions from the database.

  https://github.com/abpframework/abp/blob/dev/modules/permission-management/src/Volo.Abp.PermissionManagement.Domain/Volo/Abp/PermissionManagement/IPermissionManager.cs

  Thanks.

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