Abp vNext异常处理的缺陷/改造方案

吐槽Abp Vnext异常处理! 哎呀,是一个喷子

目前项目使用Abp VNext开发,免不了要全局处理异常、提示服务器异常信息。

1. Abp官方异常处理

Abp项目默认会启动内置的异常处理,默认不将异常信息发送到客户端。
在AppModule文件ConfigureServices方法中使用以下代码:

 Configure<AbpExceptionHandlingOptions>(options =>
{
      options.SendExceptionsDetailsToClients = true;
});

可将异常信息发送到客户端:如下图:

{
"error": {
"code": null,
"message": "ERROR [42000] [Cloudera][ImpalaODBC] (360) Syntax error occurred during query execution: [HY000] : AnalysisException: Could not resolve column/field reference: 'ug_fed89221846a42dc8427932b2965a020'\n",
"details": "OdbcException: ERROR [42000] [Cloudera][ImpalaODBC] (360) Syntax error occurred during query execution: [HY000] : AnalysisException: Could not resolve column/field reference: 'ug_fed89221846a42dc8427932b2965a020'\n\nSTACK TRACE: at Gridsum.EAP.Olap.ExecuteQueryLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/ExecuteQueryLayer.cs:line 81\n at Gridsum.EAP.Olap.DistributedCacheLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/DistributedCacheLayer.cs:line 50\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, DistributedCacheEntryOptions options, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 60\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, CancellationToken token) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 47\n at Gridsum.EAP.Application.UserGroupService.ClearUserGroupUserAsync(UserGroupUpdateUserDto updateDto, String idshort, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 332\n at Gridsum.EAP.Application.UserGroupService.UpdateUserGroupUserAsync(UserGroupUpdateUserDto updateDto, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 370\n at Castle.DynamicProxy.AsyncInterceptorBase.ProceedAsynchronous[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo "42000] [Cloudera][ImpalaODBC] (360 "42000] [Cloudera][ImpalaODBC] (360) Syntax error occurred during query execution: [HY000] : AnalysisException: Could not resolve column/field reference: 'ug_fed89221846a42dc8427932b2965a020'\n\nSTACK TRACE: at Gridsum.EAP.Olap.ExecuteQueryLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/ExecuteQueryLayer.cs:line 81\n at Gridsum.EAP.Olap.DistributedCacheLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/DistributedCacheLayer.cs:line 50\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, DistributedCacheEntryOptions options, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 60\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, CancellationToken token) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 47\n at Gridsum.EAP.Application.UserGroupService.ClearUserGroupUserAsync(UserGroupUpdateUserDto updateDto, String idshort, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 332\n at Gridsum.EAP.Application.UserGroupService.UpdateUserGroupUserAsync(UserGroupUpdateUserDto updateDto, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 370\n at Castle.DynamicProxy.AsyncInterceptorBase.ProceedAsynchronous[TResult") Syntax error occurred during query execution: [HY000] : AnalysisException: Could not resolve column/field reference: 'ug_fed89221846a42dc8427932b2965a020'\n\nSTACK TRACE: at Gridsum.EAP.Olap.ExecuteQueryLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/ExecuteQueryLayer.cs:line 81\n at Gridsum.EAP.Olap.DistributedCacheLayer.HandleQueryAsync(QueryContext queryContext, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/Olap/DistributedCacheLayer.cs:line 50\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, DistributedCacheEntryOptions options, CancellationToken cancellationToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 60\n at Gridsum.EAP.DataQuery.AbstractQueryExecutor`1.ExecuteQueryAsync(TQuery query, CancellationToken token) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.DataQuery/AbstractQueryExecutor.cs:line 47\n at Gridsum.EAP.Application.UserGroupService.ClearUserGroupUserAsync(UserGroupUpdateUserDto updateDto, String idshort, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 332\n at Gridsum.EAP.Application.UserGroupService.UpdateUserGroupUserAsync(UserGroupUpdateUserDto updateDto, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.Application/UserGroup/UserGroupService.cs:line 370\n at Castle.DynamicProxy.AsyncInterceptorBase.ProceedAsynchronous[TResult")\n at Volo.Abp.Castle.DynamicProxy.CastleAbpMethodInvocationAdapterWithReturnValue`1.ProceedAsync()\n at Volo.Abp.Validation.ValidationInterceptor.InterceptAsync(IAbpMethodInvocation invocation)\n at Volo.Abp.Castle.DynamicProxy.CastleAsyncAbpInterceptorAdapter`1.InterceptAsync[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo, Func`3 proceed "TResult")\n at Castle.DynamicProxy.AsyncInterceptorBase.ProceedAsynchronous[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo "TResult")\n at Volo.Abp.Castle.DynamicProxy.CastleAbpMethodInvocationAdapterWithReturnValue`1.ProceedAsync()\n at Volo.Abp.Auditing.AuditingInterceptor.InterceptAsync(IAbpMethodInvocation invocation)\n at Volo.Abp.Castle.DynamicProxy.CastleAsyncAbpInterceptorAdapter`1.InterceptAsync[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo, Func`3 proceed "TResult")\n at Castle.DynamicProxy.AsyncInterceptorBase.ProceedAsynchronous[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo "TResult")\n at Volo.Abp.Castle.DynamicProxy.CastleAbpMethodInvocationAdapterWithReturnValue`1.ProceedAsync()\n at Volo.Abp.Uow.UnitOfWorkInterceptor.InterceptAsync(IAbpMethodInvocation invocation)\n at Volo.Abp.Castle.DynamicProxy.CastleAsyncAbpInterceptorAdapter`1.InterceptAsync[TResult](IInvocation invocation, IInvocationProceedInfo proceedInfo, Func`3 proceed "TResult")\n at Gridsum.EAP.Controllers.UserGroupController.UpdateUserGroupUserAsync(String id, CancellationToken cancelToken) in /home/gitlab-runner/builds/ttRjAPVA/0/eap/website/app/src/Gridsum.EAP.HttpApi/Controllers/UserGroupController.cs:line 320\n at lambda_method3440(Closure , Object )\n at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextExceptionFilterAsync>g__Awaited|25_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)\n",
"data": null,
"validationErrors": null
}
}

经过几天倒腾,发现Abp VNext的异常处理有几个问题。

2.Abp异常处理存在的缺陷

  1. 并没有如官方所述:自动处理所有异常,需要满足官方所说的任意一个条件
    Abp vNext异常处理的缺陷/改造方案

这就导致当Controller Action方法返回类型不是object result(并有异常抛出)时,则根本捕获不到异常,这应该算Abp的一个Bug

  1. 输出的异常没有TraceId, 不利于日志排查
  2. 发送到客户端的日志字段message,detail字段过于详细冗长,不能用于前端显示

当然你也可以使用上面所说的配置:不将异常信息发送到客户端,但这样就因噎废食了。

3. 异常处理的目标

虽然Abp的异常处理有缺陷, 但只是异常信息应用上的缺陷,
Abp异常处理①对异常的划分、②异常信息的本地化、③出现异常时写日志 支持的还是相当好。

我们考虑基于Abp的异常处理做一些扩展,(若扩展不了做一些替换 ..

  1. 对所有Controller-Action方法捕获异常, [修复Abp Bug]
  2. 在Abp的异常处理结果中添加 TraceId
  3. 希望将服务端异常划分为几大类,简化前端显示;同时也不妨碍开发者查看详细异常信息。

4. 揪出Abp异常处理缺陷的根源

Abp异常处理的核心对象AbpExceptionFilter,实现IAsyncExceptionFilter过滤器, ITransientDependency瞬时注入接口。

这是一个ServiceFilterAttribute, 你可以认为有如下

[ServiceFilter(typeof(AbpExceptionFilter))]

特性,作用在每一个Controller的Action方法上。

一旦某个Controller的Action方法发生异常, 会先后执行如下代码:

public async Task OnExceptionAsync(ExceptionContext context)
{
     if (!ShouldHandleException(context))
     {
          return;
     }
     await HandleAndWrapException(context);
}
  1. ShouldHandleException(context) :监测是否应该处理异常,据查该函数确实存在我上文说的问题:并不能捕获所有的Action方法的异常。
  2. HandleAndWrapException(context): 异常处理步骤:
    • 根据Abp内置的异常类型,自动确定状态码 (这个在Abp官方文档有讲)
    • 序列化异常对象,并向客户端输出如下格式:
    {
"error": {
"code": null,
"message": "ERROR [42000] [Cloudera][ImpalaODBC] (360) Syntax error occurred during query execution: [HY000] : AnalysisException: Could not resolve column/field reference: 'ug_fed89221846a42dc8427932b2965a020'\n",
"details":xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx......,
"data": null,
"validationErrors": null
}
}

① 输出的信息,从一开始就没有包含TraceId;
② 这个格式的日志过于详细,messagedetails字段均不能用于前端显示。

  • 写日志,默认异常级别为Error

掌握了以上源码,我们就可以针对性的修改Abp的核心异常处理类AbpExceptionFilter

5. Abp异常处理顽疾的修复方案

光说不练假把式

Abp的AbpExceptionFilter不是抽象类,没法重载,为大道我们设定的3个目标。
考虑使用针对性的ExceptionFilter替换默认的AbpExceptionFilter

①. 新建EapExceptionFilter,内容拷贝自AbpExceptionFilter, 并做出如下针对性修改:

Abp vNext异常处理的缺陷/改造方案

Abp vNext异常处理的缺陷/改造方案

②. 在AppModule替换默认的AbpExceptionFilter为新的EapExceptionFilter过滤器:

 context.Services.AddMvc(options =>
{
      options.Filters.ReplaceOne(x=> (x as ServiceFilterAttribute)?.ServiceType?.Name==nameof(AbpExceptionFilter), new ServiceFilterAttribute(typeof(EapExceptionFilter)));  
})

改造的效果如下:

Abp vNext异常处理的缺陷/改造方案

That's All

如果大家真切使用了Abp VNext最新版,

相信我在第2点提到的Abp异常处理的顽疾,Abp使用者会感同身受;

第3点提出的几个目标也是企业级异常处理 要解决的痛点。

此异常处理的思路也可推及到其他非Abp项目.

改造方案在Abp官方github issue上: https://github.com/abpframework/abp/issues/6761
本人经验之谈,如果问题或看法,请不吝赐教!

  1. https://github.com/abpframework/abp/blob/dev/framework/src/Volo.Abp.AspNetCore.Mvc/Volo/Abp/AspNetCore/Mvc/ExceptionHandling/AbpExceptionFilter.cs
  2. https://docs.microsoft.com/en-us/aspnet/core/mvc/controllers/filters?view=aspnetcore-5.0
发表评论

评论已关闭。

相关文章