mh_frame_sps/APT.Infrastructure.EF/TenantBaseDbContext.cs

using System;
using APT.Infrastructure.Api;
using Microsoft.EntityFrameworkCore;

namespace APT.Infrastructure.EF
{
    public abstract class TenantBaseDbContext : DbContext, ITenantDbContext
    {
        public TenantInfo Tenant { get; protected internal set; }
        private readonly IServiceProvider serviceProvider;
        public TenantBaseDbContext(DbContextOptions options, TenantInfo tenant, IServiceProvider serviceProvider)
            : base(options)
        {
            this.serviceProvider = serviceProvider;
            this.Tenant = tenant;
        }
        public TenantBaseDbContext()
           : base()
        {
        }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            if (!string.IsNullOrEmpty(Tenant?.Conn))
            {
                var builderType = typeof(ITenantEntityBuilder<>).MakeGenericType(this.GetType());

                ITenantEntityBuilder entityBuilder = (ITenantEntityBuilder)serviceProvider.GetService(builderType);

                entityBuilder.UpdateEntities(modelBuilder);
            }
            else
            {
                base.OnModelCreating(modelBuilder);
            }

        }
    }
}