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A ConfigurationManager wrapper that allows the developer to store credentials and a like settings in a machine specific config file that takes precedence when loading over web.config
public class MachineConfigurationManager
{
private const string ConfigFileCacheKey = "ConfigFileCacheKey";
private static readonly ILog Logger = LogManager.GetLogger(typeof(MachineConfigurationManager));
public static void Init()
{
var _file = GetConfigFile();
if (!_file.Exists)
{
if (Logger.IsInfoEnabled)
{
Logger.InfoFormat("No machine specific configuration exists. {0} is created.", _file.FullName);
}
var _appSettings = new Dictionary<string, string>();
foreach (var _key in ConfigurationManager.AppSettings.AllKeys)
{
_appSettings.Add(_key, ConfigurationManager.AppSettings[_key]);
}
File.WriteAllText(_file.FullName, JsonConvert.SerializeObject(_appSettings, Formatting.Indented));
}
}
public static MachineAppSetting AppSettings
{
get
{
return new MachineAppSetting();
}
}
private static FileInfo GetConfigFile()
{
return new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "\\machine." + Environment.MachineName.ToLower() + ".config");
}
public class MachineAppSetting
{
public string this[string key]
{
get
{
Dictionary<string, string> _appSettings = (Dictionary<string, string>)HttpRuntime.Cache.Get(ConfigFileCacheKey);
if (_appSettings == null)
{
_appSettings = JsonConvert.DeserializeObject<Dictionary<string,string>>(File.ReadAllText(GetConfigFile().FullName));
HttpRuntime.Cache.Add(
ConfigFileCacheKey,
_appSettings,
new CacheDependency(GetConfigFile().FullName),
Cache.NoAbsoluteExpiration,
TimeSpan.FromDays(1),
CacheItemPriority.AboveNormal,
delegate(string s, object value, CacheItemRemovedReason reason)
{
if (Logger.IsInfoEnabled)
{
Logger.InfoFormat("Machine configuration cache is cleared (Reason: " + reason + ")");
}
});
}
if (_appSettings.ContainsKey(key))
{
return _appSettings[key];
}
return ConfigurationManager.AppSettings[key];
}
}
}
}
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