ASP.NET当前会话对象-注入日志逻辑
本文关键字:注入 日志 对象 NET 会话 ASP | 更新日期: 2023-09-27 18:21:40
在我正在开发的应用程序中,我们使用的是InProc ASP.NET SessionState对象。
我想找到一种方法,每当有代码读取或写入Session对象时,都可以记录消息。
我知道Item[]索引,我想我应该以某种方式注入代码。。或者可能继承HttpSessionState类?
选项、想法、经验。。。?
只是一个加法。
(编辑:我让它更通用了一点)
首先,一个抽象包装的接口
interface ISessionStateItemCollectionWrapper : ISessionStateItemCollection
{
ISessionStateItemCollection WrappedCollection { get; set; }
}
由于我想在读取或写入会话项时进行日志记录,我为ISessionStateItemCollection 添加了一个包装器
public class SessionStateItemCollectionWithInstrumentation : ISessionStateItemCollectionWrapper
{
public ISessionStateItemCollection WrappedCollection { get; set; }
//...
//...
//...
public object this[string name]
{
get
{
LogRead();
return _wrappedCollection[name];
}
set
{
LogWrite();
_wrappedCollection[name] = value;
}
}
//...
//More log on some methods
//...
}
然后,为了注入它,我继承了SessionStateStoreData
class SessionStoreDataItemsInjector<T> : SessionStateStoreData where T:ISessionStateItemCollectionWrapper, new()
{
public SessionStoreDataItemsInjector(SessionStateStoreData wrappedData)
: base(new T()
{
WrappedCollection = wrappedData.Items
}, wrappedData.StaticObjects, wrappedData.Timeout)
{
}
}
然后我把它连接到唐提供的类
abstract class InProcSessionStateInjected<T> : SessionStateStoreProviderBase where T : ISessionStateItemCollectionWrapper, new()
{
private SessionStateStoreProviderBase inProcSessionStore;
public override void Initialize(string name, System.Collections.Specialized.NameValueCollection config)
{
var inProcSessionStoreType = typeof(SessionStateStoreProviderBase).Assembly.GetType("System.Web.SessionState.InProcSessionStateStore");
inProcSessionStore = (SessionStateStoreProviderBase)Activator.CreateInstance(inProcSessionStoreType);
inProcSessionStore.Initialize(name, config);
}
public override SessionStateStoreData CreateNewStoreData(HttpContext context, int timeout)
{
var sessionStateStoreData = inProcSessionStore.CreateNewStoreData(context, timeout);
return sessionStateStoreData.Items.GetType() != typeof(T) ? new SessionStoreDataItemsInjector<T>(sessionStateStoreData) : sessionStateStoreData;
}
public override SessionStateStoreData GetItem(HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
{
var sessionStateStoreData = inProcSessionStore.GetItem(context, id, out locked, out lockAge, out lockId, out actions);
if (sessionStateStoreData != null && sessionStateStoreData.Items.GetType() != typeof(T))
{
return new SessionStoreDataItemsInjector<T>(sessionStateStoreData);
}
return sessionStateStoreData;
}
public override SessionStateStoreData GetItemExclusive(HttpContext context, string id, out bool locked, out TimeSpan lockAge, out object lockId, out SessionStateActions actions)
{
var sessionStateStoreData = inProcSessionStore.GetItemExclusive(context, id, out locked, out lockAge, out lockId, out actions);
if (sessionStateStoreData != null && sessionStateStoreData.Items.GetType() != typeof(T))
{
return new SessionStoreDataItemsInjector<T>(sessionStateStoreData);
}
return sessionStateStoreData;
}
您可以创建一个自定义SessionStateProvider,并从该提供程序中实例化InProcSessionStateStore的实例,并使用它来完成与会话存储处理相关的所有工作。
从这个自定义SessionStateProvider中,您可以执行所有日志记录。
所以你必须做的是:
-
创建一个继承SessionStateStoreProviderBase类的新类,假设其名称为"MySessionStateProvider"
-
实现所有抽象类方法。
-
在类的构造函数中,使用Reflection创建InProcSessionStateStore类的实例(当为InProc配置时,ASP.NET使用该实例来存储会话状态-您的情况)将此实例存储在变量中
- 在所有重写的方法中使用InProc类的上述实例来执行必要的操作
- 在Web.Config中配置此新提供程序
- 最后但同样重要的是,实现日志记录
以下是示例代码(如果您需要一个包含更多信息的工作示例,还可以链接到其他人是如何创建自定义提供程序的)
https://msdn.microsoft.com/en-us/library/system.web.sessionstate.sessionstatestoreproviderbase(v=vs.110).aspxhttp://www.codeproject.com/Articles/102000/ASP-NET-Custom-Session-Store-Provider-compatible-w
Web.Config
<sessionState mode="Custom" customProvider="custom_provider" ... >
<providers>
<add name="custom_provider" type="Xxxx.xxx.MySessionStateProvider"/>
</providers>
</sessionState>
MySessionStateProvider类代码:
public class MySessionStateProvider : System.Web.SessionState.SessionStateStoreProviderBase {
private readonly SessionStateStoreProviderBase InProcSessionStore;
public MySessionStateProvider() {
var inProcSessionStoreType = typeof(System.Web.SessionState.SessionStateStoreProviderBase).Assembly.GetType("System.Web.SessionState.InProcSessionStateStore");
InProcSessionStore = (System.Web.SessionState.SessionStateStoreProviderBase)Activator.CreateInstance(inProcSessionStoreType);
InProcSessionStore.Initialize(null, null);
}
public override SessionStateStoreData CreateNewStoreData(HttpContext context, int timeout) {
return InProcSessionStore.CreateNewStoreData(context, timeout);
}
public override void CreateUninitializedItem(HttpContext context, string id, int timeout) {
InProcSessionStore.CreateUninitializedItem(context, id, timeout);
}
public override void Dispose() {
InProcSessionStore.Dispose();
}
//... Implement the rest of the method in the same manner.
public override bool SetItemExpireCallback(SessionStateItemExpireCallback expireCallback) {
return InProcSessionStore.SetItemExpireCallback(expireCallback);
}
}