private void ConfigFileChangesCacheCallback(string key, object value, System.Web.Caching.CacheItemRemovedReason reason)
{
DetectConfigFileChanges();
// It only considers that the file was modified when the reason is 'DependencyChanged'. This is because the cache item could be removed for other reasons, among them when the AppDomain is restarted (web.config modified, ...)
if (reason == CacheItemRemovedReason.DependencyChanged)
{
// Delete the persistent cache's file and clear the persistent cache stored in memory
new PersistentCacheController().ResetPersistentCache();
LogHelper.Warn <ConfigController>("Routing config file change detected.");
}
}
/// <summary>
/// 一旦bbsmax.config发生了变动会立即触发本静态方法
/// </summary>
/// <param name="key"></param>
/// <param name="cacheItem"></param>
/// <param name="reason"></param>
private static void OnAppConfigRemove(string key, object cacheItem, System.Web.Caching.CacheItemRemovedReason reason)
{
AppConfig newConfig = null;
try
{
newConfig = ReadAppConfig();
}
catch
{
//读取配置文件发生错误
s_AppConfig = null;
HttpRuntime.UnloadAppDomain();
throw;
}
//一旦连接字符串和提供程序发生了变化，马上重启应用程序
if (newConfig.ConnectionString != s_AppConfig.ConnectionString
||
newConfig.DataProviderName != s_AppConfig.DataProviderName
||
newConfig.InstallDirectory != s_AppConfig.InstallDirectory
||
newConfig.PassportClient != s_AppConfig.PassportClient
)
{
s_AppConfig = newConfig;
HttpRuntime.UnloadAppDomain();
}
else
{
string configFilePath = GetConfigFilePath();
//创建一个缓存，目的是监视bbsmax.config文件的改动
HttpRuntime.Cache.Add("bbsmax.config", true, new System.Web.Caching.CacheDependency(configFilePath), Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, CacheItemPriority.NotRemovable, OnAppConfigRemove);
//如果压缩设置发生了变化
if (newConfig.StaticCompress != s_AppConfig.StaticCompress
||
newConfig.DynamicCompress != s_AppConfig.DynamicCompress
||
newConfig.Licence != s_AppConfig.Licence
||
IsOwnerUsernamesSame(newConfig.OwnerUsernames, s_AppConfig.OwnerUsernames)
)
{
s_AppConfig = newConfig;
}
}
}
private void ItemRemoved(string fullKey, object item, System.Web.Caching.CacheItemRemovedReason reason)
{
if (string.IsNullOrWhiteSpace(fullKey))
{
return;
}
// ignore manually removed items, stats will be updated already
if (reason == System.Web.Caching.CacheItemRemovedReason.Removed)
{
return;
}
bool isToken;
bool hasRegion;
string key;
string region;
ParseKeyParts(_instanceKeyLength, fullKey, out isToken, out hasRegion, out region, out key);
if (!isToken)
{
if (hasRegion)
{
Stats.OnRemove(region);
}
else
{
Stats.OnRemove();
}
var cacheItem = item as CacheItem <TCacheValue>;
object originalValue = null;
if (item != null)
{
originalValue = cacheItem.Value;
}
// trigger cachemanager's remove on evicted and expired items
if (reason == System.Web.Caching.CacheItemRemovedReason.Underused)
{
TriggerCacheSpecificRemove(key, region, Core.Internal.CacheItemRemovedReason.Evicted, originalValue);
}
else if (reason == System.Web.Caching.CacheItemRemovedReason.Expired)
{
TriggerCacheSpecificRemove(key, region, Core.Internal.CacheItemRemovedReason.Expired, originalValue);
}
}
}
public static void TimeoutUser(string key, object v, System.Web.Caching.CacheItemRemovedReason r)
{
// return;
if (r == CacheItemRemovedReason.Removed ||
r == CacheItemRemovedReason.DependencyChanged ||
r == CacheItemRemovedReason.Expired)
{
string userId = v.ToString();
WebContext.CreateHttpContext();
try
{
MembersManager.UpdateOnlineStatus(Int32.Parse(userId), false);
}
catch (Exception Ex)
{
throw (Ex);
}
}
}
private static void OnRemoveCallBack(string key, object data, ch.CacheItemRemovedReason reason)
{
switch (reason)
{
case System.Web.Caching.CacheItemRemovedReason.DependencyChanged:
//Log
break;
case System.Web.Caching.CacheItemRemovedReason.Expired:
//Renew
break;
case System.Web.Caching.CacheItemRemovedReason.Removed:
//Log
break;
case System.Web.Caching.CacheItemRemovedReason.Underused:
break;
}
}
//***************************************************************************************************************************************
public static void OnRemove(string key, object cacheItem, System.Web.Caching.CacheItemRemovedReason reason)
{
//When the cache expires then reload it from the API call.
ModuleCatalogueCache.Instance.LoadModules();
}
public static void ReportRemovedAGSTokenCallback(String key, object value,
System.Web.Caching.CacheItemRemovedReason removedReason)
{
GenerateAGSToken();
}
public void RemovedCallback(String k, Object v, System.Web.Caching.CacheItemRemovedReason r)
{
//do stuff when the item is removed
}
