ThTenantDatabaseBackgroundInitializer.cs
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using System.Collections.Concurrent;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Uow;
using Yi.Framework.TenantManagement.Application.Contracts;
namespace FoodLabeling.Th.Application.MultiTenancy;
/// <summary>
/// 使用独立 DI Scope 在后台执行 <see cref="ITenantService.InitAsync"/>，避免阻塞 HTTP 请求。
/// </summary>
public class ThTenantDatabaseBackgroundInitializer
: IThTenantDatabaseBackgroundInitializer, ISingletonDependency
{
private readonly IServiceScopeFactory _scopeFactory;
private readonly ILogger<ThTenantDatabaseBackgroundInitializer> _logger;
private static readonly ConcurrentDictionary<Guid, byte> Running = new();
public ThTenantDatabaseBackgroundInitializer(
IServiceScopeFactory scopeFactory,
ILogger<ThTenantDatabaseBackgroundInitializer> logger)
{
_scopeFactory = scopeFactory;
_logger = logger;
}
/// <inheritdoc />
public void Enqueue(Guid tenantId)
{
if (!Running.TryAdd(tenantId, 0))
{
_logger.LogInformation("租户 {TenantId} 业务库初始化已在进行中，跳过重复入队", tenantId);
return;
}
_ = Task.Run(() => RunInitAsync(tenantId));
}
private async Task RunInitAsync(Guid tenantId)
{
try
{
_logger.LogInformation("租户 {TenantId} 业务库后台初始化开始", tenantId);
using var scope = _scopeFactory.CreateScope();
var uowManager = scope.ServiceProvider.GetRequiredService<IUnitOfWorkManager>();
var tenantService = scope.ServiceProvider.GetRequiredService<ITenantService>();
using var uow = uowManager.Begin(requiresNew: true, isTransactional: false);
await tenantService.InitAsync(tenantId);
await uow.CompleteAsync();
_logger.LogInformation("租户 {TenantId} 业务库后台初始化完成", tenantId);
}
catch (Exception ex)
{
_logger.LogError(ex, "租户 {TenantId} 业务库后台初始化失败", tenantId);
}
finally
{
Running.TryRemove(tenantId, out _);
}
}
}