我正在使用ASP.Net Web API 2 / .Net 4.5.2.
Thread.CurrentPrincipal = callingPrincipal;
但是当我这样做时,我得到一个ObjectDisposedException：
System.ObjectDisposedException: Safe handle has been closed
如何将当前主体保留在后台工作项中？
我可以以某种方式复制校长吗？
public void Run<T>(Action<T> action)
{
_logger.Debug("Queueing background work item");
var callingPrincipal = Thread.CurrentPrincipal;
HostingEnvironment.QueueBackgroundWorkItem(token =>
{
try
{
// UNCOMMENT - THROWS EXCEPTION
// Thread.CurrentPrincipal = callingPrincipal;
_logger.Debug("Executing queued background work item");
using (var scope = DependencyResolver.BeginLifetimeScope())
{
var service = scope.Resolve<T>();
action(service);
}
}
catch (Exception ex)
{
_logger.Fatal(ex);
}
finally
{
_logger.Debug("Completed queued background work item");
}
});
}
解决方法
事实证明,ClaimsPrincipal现在有一个复制构造函数.
var principal = new ClaimsPrincipal(Thread.CurrentPrincipal);
这似乎可以在保留所有身份和声明信息的同时解决问题.完整的功能如下：
public void Run<T>(Action<T> action)
{
_logger.Debug("Queueing background work item");
var principal = new ClaimsPrincipal(Thread.CurrentPrincipal);
HostingEnvironment.QueueBackgroundWorkItem(token =>
{
try
{
Thread.CurrentPrincipal = principal;
_logger.Debug("Executing queued background work item");
using (var scope = DependencyResolver.BeginLifetimeScope())
{
var service = scope.Resolve<T>();
action(service);
}
}
catch (Exception ex)
{
_logger.Fatal(ex);
}
finally
{
_logger.Debug("Completed queued background work item");
}
});
}
