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Tridion Event System app.config helpers
using System;
using System.Configuration;
using System.Reflection;
using System.Runtime.Caching;
namespace Tridion.EventSystem
{
/// <summary>
/// Configuration file should be named the same as the Event System DLL with '.config' at the end.
/// ie. TridionEventSystem.dll.config
/// The location should be the same folder as where the .dll file is.
///
/// Jan 8,2015
/// Original code from: https://code.google.com/p/yet-another-tridion-blog/source/browse/trunk/Yet+Another+Event+System/Com.Mitza.YAES/ConfigurationManager.cs
/// Code-haircut provided by R. Curlette
/// </summary>
public static class ConfigurationManagerEventSystem
{
private const double CACHE_TIME_IN_MINUTES = 6000;
private static ObjectCache Cache
{
get
{
return MemoryCache.Default;
}
}
/// <summary>
/// Returns the configuration value corresponding to the given key from Configuration corresponding to the current executing DLL AppSettings section
/// </summary>
public static string GetAppSetting(string key)
{
try
{
if (!Cache.Contains(key))
{
KeyValueConfigurationElement configElement = DllConfiguration.AppSettings.Settings[key];
if (configElement != null)
{
string value = configElement.Value;
if (!string.IsNullOrEmpty(value))
{
StoreInCache(key, value);
return value;
}
}
}
else // get from cache
{
return Cache[key].ToString();
}
} catch(Exception ex)
{
// do nothing
}
return string.Empty;
}
/// <summary>
/// Returns the Configuration object next to the current executing DLL
/// </summary>
private static Configuration _dllConfiguration = null;
private static Configuration DllConfiguration
{
get
{
if (_dllConfiguration == null)
{
try
{
ExeConfigurationFileMap fileMap = new ExeConfigurationFileMap()
{
ExeConfigFilename = Assembly.GetExecutingAssembly().Location + ".config"
};
_dllConfiguration = System.Configuration.ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None);
} catch(Exception ex)
{
// do nothing
}
}
return _dllConfiguration;
}
}
/// <summary>
/// Store any object in the cache
/// </summary>
/// <param name="key">Identification of the item</param>
/// <param name="item">The object to store (can be a page, component, schema, etc) </param>
public static void StoreInCache(string key, object item)
{
CacheItemPolicy policy = new CacheItemPolicy();
policy.AbsoluteExpiration = DateTime.Now.AddMinutes(CACHE_TIME_IN_MINUTES);
policy.Priority = CacheItemPriority.Default;
Cache.Add(key, item, policy);
}
}
}
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