update portable projects

ServiceStack/Host/ServiceExec.cs

@@ -0,0 +1,156 @@
+//Copyright (c) Service Stack LLC. All Rights Reserved.
+//License: https://raw.github.com/ServiceStack/ServiceStack/master/license.txt
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection;
+using System.Threading.Tasks;
+using MediaBrowser.Model.Services;
+
+namespace ServiceStack.Host
+{
+    public static class ServiceExecExtensions
+    {
+        public static IEnumerable<MethodInfo> GetActions(this Type serviceType)
+        {
+            foreach (var mi in serviceType.GetRuntimeMethods().Where(i => i.IsPublic && !i.IsStatic))
+            {
+                if (mi.GetParameters().Length != 1)
+                    continue;
+
+                var actionName = mi.Name.ToUpper();
+                if (!HttpMethods.AllVerbs.Contains(actionName) && actionName != ActionContext.AnyAction)
+                    continue;
+
+                yield return mi;
+            }
+        }
+    }
+
+    internal static class ServiceExecGeneral
+    {
+        public static Dictionary<string, ActionContext> execMap = new Dictionary<string, ActionContext>();
+
+        public static void CreateServiceRunnersFor(Type requestType, List<ActionContext> actions)
+        {
+            foreach (var actionCtx in actions)
+            {
+                if (execMap.ContainsKey(actionCtx.Id)) continue;
+
+                execMap[actionCtx.Id] = actionCtx;
+            }
+        }
+
+        public static async Task<object> Execute(Type serviceType, IRequest request, object instance, object requestDto, string requestName)
+        {
+            var actionName = request.Verb
+                ?? HttpMethods.Post; //MQ Services
+
+            ActionContext actionContext;
+            if (ServiceExecGeneral.execMap.TryGetValue(ActionContext.Key(serviceType, actionName, requestName), out actionContext)
+                || ServiceExecGeneral.execMap.TryGetValue(ActionContext.AnyKey(serviceType, requestName), out actionContext))
+            {
+                if (actionContext.RequestFilters != null)
+                {
+                    foreach (var requestFilter in actionContext.RequestFilters)
+                    {
+                        requestFilter.RequestFilter(request, request.Response, requestDto);
+                        if (request.Response.IsClosed) return null;
+                    }
+                }
+
+                var response = actionContext.ServiceAction(instance, requestDto);
+
+                var taskResponse = response as Task;
+                if (taskResponse != null)
+                {
+                    await taskResponse.ConfigureAwait(false);
+                    response = ServiceStackHost.Instance.GetTaskResult(taskResponse, requestName);
+                }
+
+                return response;
+            }
+
+            var expectedMethodName = actionName.Substring(0, 1) + actionName.Substring(1).ToLower();
+            throw new NotImplementedException(string.Format("Could not find method named {1}({0}) or Any({0}) on Service {2}", requestDto.GetType().GetOperationName(), expectedMethodName, serviceType.GetOperationName()));
+        }
+
+        public static List<ActionContext> Reset(Type serviceType)
+        {
+            var actions = new List<ActionContext>();
+
+            foreach (var mi in serviceType.GetActions())
+            {
+                var actionName = mi.Name.ToUpper();
+                var args = mi.GetParameters();
+
+                var requestType = args[0].ParameterType;
+                var actionCtx = new ActionContext
+                {
+                    Id = ActionContext.Key(serviceType, actionName, requestType.GetOperationName())
+                };
+
+                try
+                {
+                    actionCtx.ServiceAction = CreateExecFn(serviceType, requestType, mi);
+                }
+                catch
+                {
+                    //Potential problems with MONO, using reflection for fallback
+                    actionCtx.ServiceAction = (service, request) =>
+                                              mi.Invoke(service, new[] { request });
+                }
+
+                var reqFilters = new List<IHasRequestFilter>();
+
+                foreach (var attr in mi.GetCustomAttributes(true))
+                {
+                    var hasReqFilter = attr as IHasRequestFilter;
+
+                    if (hasReqFilter != null)
+                        reqFilters.Add(hasReqFilter);
+                }
+
+                if (reqFilters.Count > 0)
+                    actionCtx.RequestFilters = reqFilters.OrderBy(i => i.Priority).ToArray();
+
+                actions.Add(actionCtx);
+            }
+
+            return actions;
+        }
+
+        private static ActionInvokerFn CreateExecFn(Type serviceType, Type requestType, MethodInfo mi)
+        {
+            var serviceParam = Expression.Parameter(typeof(object), "serviceObj");
+            var serviceStrong = Expression.Convert(serviceParam, serviceType);
+
+            var requestDtoParam = Expression.Parameter(typeof(object), "requestDto");
+            var requestDtoStrong = Expression.Convert(requestDtoParam, requestType);
+
+            Expression callExecute = Expression.Call(
+            serviceStrong, mi, requestDtoStrong);
+
+            if (mi.ReturnType != typeof(void))
+            {
+                var executeFunc = Expression.Lambda<ActionInvokerFn>
+                (callExecute, serviceParam, requestDtoParam).Compile();
+
+                return executeFunc;
+            }
+            else
+            {
+                var executeFunc = Expression.Lambda<VoidActionInvokerFn>
+                (callExecute, serviceParam, requestDtoParam).Compile();
+
+                return (service, request) =>
+                {
+                    executeFunc(service, request);
+                    return null;
+                };
+            }
+        }
+    }
+}