orchard中Controller是如何找到的

Orchard 控制器解析1

CompositionStrategy类

CompositionStrategy中跟控制器相关的就是Compose函数。看代码：

 var allRoutes = new List<RouteDescriptor>();
 var controllers = BuildBlueprint(features, IsController, BuildController, excludedTypes);

//通过Feature设置AreaName
 private static ControllerBlueprint BuildController(Type type, Feature feature) {            var areaName = feature.Descriptor.Extension.Id;            var controllerName = type.Name;            if (controllerName.EndsWith("Controller"))                controllerName = controllerName.Substring(0, controllerName.Length - "Controller".Length);            return new ControllerBlueprint {                Type = type,                Feature = feature,                AreaName = areaName,//AreaName在这里加上 便于后面 ControllFactory中去寻找                ControllerName = controllerName,            };
            var areaName = feature.Descriptor.Extension.Id;

            var controllerName = type.Name;
            if (controllerName.EndsWith("Controller"))
                controllerName = controllerName.Substring(0, controllerName.Length - "Controller".Length);

            return new ControllerBlueprint {
                Type = type,
                Feature = feature,
                AreaName = areaName,//AreaName在这里加上 便于后面 ControllFactory中去寻找
                ControllerName = controllerName,
            };
        }

ShellContainerFactory类:

然后再通过ShellContainerFactory 加入orchard容器中

foreach (var item in blueprint.Controllers) {
                  //这里很关键是通过AreaName和ControllerName注入
                  var serviceKeyName = (item.AreaName + "/" + item.ControllerName).ToLowerInvariant();
                  var serviceKeyType = item.Type;
                  RegisterType(builder, item)
                      .EnableDynamicProxy(dynamicProxyContext)
                      .Keyed<IController>(serviceKeyName)//这里供OrchardControllerFactory解析
                      .Keyed<IController>(serviceKeyType)
                      .WithMetadata("ControllerType", item.Type)
                      .InstancePerDependency()
                      .OnActivating(e => {
                          // necessary to inject custom filters dynamically
                          // see FilterResolvingActionInvoker
                          //需要动态注入filter
                          var controller = e.Instance as Controller;
                          if (controller != null)
                              controller.ActionInvoker = (IActionInvoker)e.Context.ResolveService(new TypedService(typeof(IActionInvoker)));
                      });
              }

OrchardControllerFactory

然后控制器工厂OrchardControllerFactory类通过RouteData寻找Controller
路由数据就是在ShellRoute中找到匹配的路由数据

protected override Type GetControllerType(RequestContext requestContext, string controllerName) {
      var routeData = requestContext.RouteData;

      // Determine the area name for the request, and fall back to stock orchard controllers
      var areaName = routeData.GetAreaName();
      //这里通过routeData里的area controllername 然后去寻找Metadata匹配
      // Service name pattern matches the identification strategy
      var serviceKey = (areaName + "/" + controllerName).ToLowerInvariant();

      // Now that the request container is known - try to resolve the controller information
      Meta<Lazy<IController>> info;
      var workContext = requestContext.GetWorkContext();
      if (TryResolve(workContext, serviceKey, out info)) {
          return (Type) info.Metadata["ControllerType"];
      }

      return null;
  }