public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
if (!context.ActionDescriptor.IsControllerAction())
{
await next();
return;
}
var unitOfWorkAttr = _unitOfWorkDefaultOptions
.GetUnitOfWorkAttributeOrNull(context.ActionDescriptor.GetMethodInfo()) ??
_aspnetCoreConfiguration.DefaultUnitOfWorkAttribute;
if (unitOfWorkAttr.IsDisabled)
{
await next();
return;
}
using (var uow = _unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions()))
{
var result = await next();
if (result.Exception == null || result.ExceptionHandled)
{
await uow.CompleteAsync();
}
}
}
public void OnActionExecuting(ActionExecutingContext filterContext)
{
if (filterContext.IsChildAction)
{
return;
}
var methodInfo = filterContext.ActionDescriptor.GetMethodInfoOrNull();
if (methodInfo == null)
{
return;
}
var unitOfWorkAttr =
_unitOfWorkDefaultOptions.GetUnitOfWorkAttributeOrNull(methodInfo) ??
_mvcConfiguration.DefaultUnitOfWorkAttribute;
if (unitOfWorkAttr.IsDisabled)
{
return;
}
SetCurrentUow(
filterContext.HttpContext,
_unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions())
);
}
public void Intercept(IInvocation invocation)
{
MethodInfo method;
try
{
method = invocation.MethodInvocationTarget;
}
catch
{
method = invocation.GetConcreteMethod();
}
var unitOfWorkAttr = _unitOfWorkOptions.GetUnitOfWorkAttributeOrNull(method);
if (unitOfWorkAttr == null || unitOfWorkAttr.IsDisabled)
{
invocation.Proceed();
return;
}
var options = unitOfWorkAttr.CreateOptions();
using (var uow = _unitOfWorkManager.Begin(options))
{
invocation.Proceed();
uow.Complete();
}
//using (var ts = new TransactionScope())//创建一个事务范围对象
//{
// invocation.Proceed();//执行被拦截的方法
// ts.Complete();//事务完成
//}
}
/// <summary>
/// Intercepts a method.
/// </summary>
/// <param name="invocation">Method invocation arguments</param>
public void Intercept(IInvocation invocation)
{
MethodInfo method;
try
{
method = invocation.MethodInvocationTarget;
}
catch
{
method = invocation.GetConcreteMethod();
}
var unitOfWorkAttr = _unitOfWorkOptions.GetUnitOfWorkAttributeOrNull(method);
if (unitOfWorkAttr == null || unitOfWorkAttr.IsDisabled)
{
//No need to a uow
invocation.Proceed();
return;
}
//No current uow, run a new one
PerformUow(invocation, unitOfWorkAttr.CreateOptions());
}
public async Task <HttpResponseMessage> ExecuteActionFilterAsync(HttpActionContext actionContext, CancellationToken cancellationToken, Func <Task <HttpResponseMessage> > continuation)
{
var methodInfo = actionContext.ActionDescriptor.GetMethodInfoOrNull();
if (methodInfo == null)
{
return(await continuation());
}
if (actionContext.ActionDescriptor.IsDynamicAbpAction())
{
return(await continuation());
}
//var unitOfWorkAttr = _unitOfWorkDefaultOptions.GetUnitOfWorkAttributeOrNull(methodInfo) ??
// _webApiConfiguration.DefaultUnitOfWorkAttribute;
var unitOfWorkAttr = _unitOfWorkDefaultOptions.GetUnitOfWorkAttributeOrNull(methodInfo);
if (unitOfWorkAttr.IsDisabled)
{
return(await continuation());
}
using (var uow = _unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions()))
{
var result = await continuation();
await uow.CompleteAsync();
return(result);
}
}
/// <summary>
/// action执行之前，增加工作单元包裹
/// </summary>
/// <param name="filterContext"></param>
public void OnActionExecuting(ActionExecutingContext filterContext)
{
// 非视图方法不增加工作单元
if (filterContext.IsChildAction)
{
return;
}
//获取方法的相关信息
var methodInfo = filterContext.ActionDescriptor.GetMethodInfoOrNull();
if (methodInfo == null)
{
return;
}
//判断该方法（或者其所属类）是否定义了UnitOfWorkAttribute
var unitOfWorkAttr =
_unitOfWorkDefaultOptions.GetUnitOfWorkAttributeOrNull(methodInfo) ??
_mvcConfiguration.DefaultUnitOfWorkAttribute;
//该方法禁用了UnitOfWork，直接返回
if (unitOfWorkAttr.IsDisabled)
{
return;
}
//启用了UnitOfWork，则将请求上下文及该方法包裹在一个工作单元中
SetCurrentUow(
filterContext.HttpContext,
_unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions())
);
}
public async Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
{
//不是控制器方法，直接调用该方法并返回，无需工作单元
if (!context.ActionDescriptor.IsControllerAction())
{
await next();
return;
}
//获取方法或者所属类定义的工作单元，如果没有，给默认的工作单元实例
var unitOfWorkAttr = _unitOfWorkDefaultOptions
.GetUnitOfWorkAttributeOrNull(context.ActionDescriptor.GetMethodInfo()) ??
_aspnetCoreConfiguration.DefaultUnitOfWorkAttribute;
//未启用UOW的直接调用action，否则用UOW实例将action包裹
if (unitOfWorkAttr.IsDisabled)
{
await next();
return;
}
//自动将UOW特性解析成工作单元模块
using (var uow = _unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions()))
{
//2020年8月25日 疑问是：这里只有一个action，它要工作单元有什么用处？？
var result = await next();
if (result.Exception == null || result.ExceptionHandled)
{
await uow.CompleteAsync();
}
}
}
public async Task OnPageHandlerExecutionAsync(PageHandlerExecutingContext context, PageHandlerExecutionDelegate next)
{
var unitOfWorkAttr = _unitOfWorkDefaultOptions
.GetUnitOfWorkAttributeOrNull(context.HandlerMethod.MethodInfo) ??
_aspnetCoreConfiguration.DefaultUnitOfWorkAttribute;
if (unitOfWorkAttr.IsDisabled)
{
await next();
return;
}
var uowOpts = new UnitOfWorkOptions
{
IsTransactional = unitOfWorkAttr.IsTransactional,
IsolationLevel = unitOfWorkAttr.IsolationLevel,
Timeout = unitOfWorkAttr.Timeout,
Scope = unitOfWorkAttr.Scope
};
using (var uow = _unitOfWorkManager.Begin(uowOpts))
{
var result = await next();
if (result.Exception == null || result.ExceptionHandled)
{
await uow.CompleteAsync();
}
}
}
/// <summary>
/// 截取一个方法。
/// </summary>
/// <param name="invocation">方法调用参数</param>
public void Intercept(IInvocation invocation)
{
MethodInfo method;
try
{
method = invocation.MethodInvocationTarget;
}
catch
{
method = invocation.GetConcreteMethod();
}
var unitOfWorkAttr = _unitOfWorkOptions.GetUnitOfWorkAttributeOrNull(method);
if (unitOfWorkAttr == null || unitOfWorkAttr.IsDisabled)
{
//不需要UOW
invocation.Proceed();
return;
}
//没有当前UOW，运行新的UOW
PerformUow(invocation, unitOfWorkAttr.CreateOptions());
}
public override void InterceptSynchronous(IInvocation invocation)
{
var method = GetMethodInfo(invocation);
var unitOfWorkAttr = _unitOfWorkOptions.GetUnitOfWorkAttributeOrNull(method);
if (unitOfWorkAttr == null || unitOfWorkAttr.IsDisabled)
{
invocation.Proceed();
return;
}
using (var uow = _unitOfWorkManager.Begin(unitOfWorkAttr.CreateOptions()))
{
invocation.Proceed();
uow.Complete();
}
}