public void Intercept(IInvocation invocation)
{
MethodInfo methodInfo = invocation.MethodInvocationTarget;
if (methodInfo == null)
{
methodInfo = invocation.Method;
}
List<MethodBoundaryAttribute> attributes = GetAttributes(methodInfo);
if (attributes.Count == 0)
{
invocation.Proceed();
}
else
{
MethodExecutionArgs args = new MethodExecutionArgs(
invocation.InvocationTarget, invocation.Method, invocation.Arguments);
InvokeEntry(attributes, args);
try
{
if (args.FlowBehavior == FlowBehavior.Return)
invocation.ReturnValue = args.ReturnValue;
else
invocation.Proceed();
args.ReturnValue = invocation.ReturnValue;
InvokeSuccess(attributes, args);
}
catch (System.Exception err)
{
args.Exception = err;
InvokeException(attributes, args);
if (args.FlowBehavior == FlowBehavior.Return)
{
invocation.ReturnValue = args.ReturnValue;
return;
}
if (args.FlowBehavior != FlowBehavior.Continue)
throw err;
}
finally
{
InvokeExit(attributes, args);
}
}
}
public virtual void OnEntry(MethodExecutionArgs args)
{
}
public virtual void OnSuccess(MethodExecutionArgs args)
{
}
public virtual void OnExit(MethodExecutionArgs args)
{
}
public virtual void OnException(MethodExecutionArgs args)
{
}
private void InvokeEntry(List<MethodBoundaryAttribute> attributes, MethodExecutionArgs args)
{
foreach (MethodBoundaryAttribute attr in attributes)
{
attr.OnEntry(args);
}
}