/// <summary>
/// Creates a configuration section handler.
/// </summary>
/// <param name="parent">Parent object.</param>
/// <param name="configContext">Configuration context object.</param>
/// <param name="section">Section XML node.</param>
/// <returns>The created section handler object.</returns>
public object Create(object parent, object configContext, XmlNode section)
{
var config = new FrameworkConfig();
var dynamicDiscoveryNode = section.SelectSingleNode("DynamicDiscovery");
if (dynamicDiscoveryNode != null && dynamicDiscoveryNode.Attributes != null)
{
var attribute = dynamicDiscoveryNode.Attributes["Enabled"];
if (attribute != null)
config.DynamicDiscovery = Convert.ToBoolean(attribute.Value);
}
var engineNode = section.SelectSingleNode("Engine");
if (engineNode != null && engineNode.Attributes != null)
{
var attribute = engineNode.Attributes["Type"];
if (attribute != null)
config.EngineType = attribute.Value;
}
var themeNode = section.SelectSingleNode("Themes");
if (themeNode != null && themeNode.Attributes != null)
{
var attribute = themeNode.Attributes["basePath"];
if (attribute != null)
config.ThemeBasePath = attribute.Value;
}
return config;
}
/// <summary>
/// Creates a factory instance and adds a http application injecting facility.
/// </summary>
/// <returns>A new factory</returns>
public static IEngine CreateEngineInstance(FrameworkConfig config)
{
if (config != null && !string.IsNullOrEmpty(config.EngineType))
{
var engineType = Type.GetType(config.EngineType);
if (engineType == null)
throw new ConfigurationErrorsException("The type '" + engineType + "' could not be found. Please check the configuration at /configuration/umcconfig/engine[@engineType] or check for missing assemblies.");
if (!typeof(IEngine).IsAssignableFrom(engineType))
throw new ConfigurationErrorsException("The type '" + engineType + "' doesn't implement 'Framework.Infrastructure.IEngine' and cannot be configured in /configuration/nop/engine[@engineType] for that purpose.");
return Activator.CreateInstance(engineType) as IEngine;
}
return new FrameworkEngine();
}
public virtual void Configure(IEngine engine, ContainerManager containerManager, EventBroker broker, FrameworkConfig configuration)
{
//other dependencies
//containerManager.AddComponentInstance<FrameworkConfig>(configuration, "framework.configuration");
containerManager.AddComponentInstance<IEngine>(engine, "framework.engine");
containerManager.AddComponentInstance<ContainerConfigurer>(this, "framework.containerConfigurer");
//type finder
containerManager.AddComponent<ITypeFinder, WebAppTypeFinder>("framework.typeFinder");
//register dependencies provided by other assemblies
var typeFinder = containerManager.Resolve<ITypeFinder>();
containerManager.UpdateContainer(x =>
{
var drTypes = typeFinder.FindClassesOfType<IDependencyRegistrar>();
var drInstances = new List<IDependencyRegistrar>();
//循环注册遍历实现IDependencyRegistrar接口的类
foreach (var drType in drTypes)
drInstances.Add((IDependencyRegistrar)Activator.CreateInstance(drType));
//sort
drInstances = drInstances.AsQueryable().OrderBy(t => t.Order).ToList();
foreach (var dependencyRegistrar in drInstances)
dependencyRegistrar.Register(x, typeFinder);
});
//event broker
containerManager.AddComponentInstance(broker);
//service registration
containerManager.AddComponent<DependencyAttributeRegistrator>("framework.serviceRegistrator");
var registrator = containerManager.Resolve<DependencyAttributeRegistrator>();
var services = registrator.FindServices();
var configurations = GetComponentConfigurations(configuration);
services = registrator.FilterServices(services, configurations);
registrator.RegisterServices(services);
}
protected virtual string[] GetComponentConfigurations(FrameworkConfig configuration)
{
var configurations = new List<string>();
string trustConfiguration = (this.GetTrustLevel() > System.Web.AspNetHostingPermissionLevel.Medium)
? ConfigurationKeys.FullTrust
: ConfigurationKeys.MediumTrust;
configurations.Add(trustConfiguration);
return configurations.ToArray();
}
