/// <summary>
/// Instances this instance.
/// </summary>
/// <returns>
/// </returns>
/// <remarks>
/// </remarks>
public static LogProvider Instance()
{
// Use the cache because the reflection used later is expensive
var cache = HttpRuntime.Cache;
// Get the names of providers
var config = ProviderConfiguration.GetProviderConfiguration(ProviderType);
// If config not found (missing web.config)
if (config == null)
{
// Try to provide a default anyway
var defaultNode = new XmlDocument();
defaultNode.LoadXml(
"<log defaultProvider=\"Log4NetLog\"><providers><clear /><add name=\"Log4NetLog\" type=\"Appleseed.Framework.Logging.Log4NetLogProvider, Appleseed.Provider.Implementation\" /></providers></log>");
// Get the names of providers
config = new ProviderConfiguration();
config.LoadValuesFromConfigurationXml(defaultNode.DocumentElement);
}
// Read specific configuration information for this provider
var providerSettings = (ProviderSettings)config.Providers[config.DefaultProvider];
// In the cache?
var cacheKey = "Appleseed::Configuration::Log::" + config.DefaultProvider;
if (cache[cacheKey] == null)
{
// The assembly should be in \bin or GAC, so we simply need
// to get an instance of the type
try
{
cache.Insert(cacheKey, ProviderHelper.InstantiateProvider(providerSettings, typeof(LogProvider)));
}
catch (Exception e)
{
throw new Exception("Unable to load provider", e);
}
}
return (LogProvider)cache[cacheKey];
}
/// <summary>
/// Creates the specified parent.
/// </summary>
/// <param name="parent">
/// The parent.
/// </param>
/// <param name="context">
/// The context.
/// </param>
/// <param name="node">
/// The configuration node.
/// </param>
/// <returns>
/// The create.
/// </returns>
/// <remarks>
/// </remarks>
public virtual object Create(object parent, object context, XmlNode node)
{
var config = new ProviderConfiguration();
config.LoadValuesFromConfigurationXml(node);
return config;
}