chore: LCEngineRequestContext insteads of Request.

Engine/Attributes/LCEngineFunctionParamAttribute.cs

@@ -0,0 +1,17 @@
+using System;
+
+namespace LeanCloud.Engine {
+    [AttributeUsage(AttributeTargets.Parameter, AllowMultiple = false)]
+    public class LCEngineFunctionParamAttribute : Attribute {
+        public string ParamName {
+            get;
+        }
+
+        public LCEngineFunctionParamAttribute(string paramName) {
+            if (string.IsNullOrEmpty(paramName)) {
+                throw new ArgumentNullException(nameof(paramName));
+            }
+            ParamName = paramName;
+        }
+    }
+}

Engine/Controllers/LCClassHookController.cs

@@ -25,9 +25,9 @@ namespace LeanCloud.Engine {
 
                 string classHookName = GetClassHookName(className, hookName);
                 if (ClassHooks.TryGetValue(classHookName, out MethodInfo mi)) {
-                    Dictionary<string, object> dict = LCEngine.Decode(body);
+                    Dictionary<string, object> data = LCEngine.Decode(body);
 
-                    LCObjectData objectData = LCObjectData.Decode(dict["object"] as Dictionary<string, object>);
+                    LCObjectData objectData = LCObjectData.Decode(data["object"] as Dictionary<string, object>);
                     objectData.ClassName = className;
                     LCObject obj = LCObject.Create(className);
                     obj.Merge(objectData);
@@ -39,24 +39,22 @@ namespace LeanCloud.Engine {
                         obj.DisableAfterHook();
                     }
 
+                    LCEngine.InitRequestContext(Request);
+
                     LCUser user = null;
-                    if (dict.TryGetValue("user", out object userObj) &&
+                    if (data.TryGetValue("user", out object userObj) &&
                         userObj != null) {
                         user = new LCUser();
                         user.Merge(LCObjectData.Decode(userObj as Dictionary<string, object>));
+                        LCEngineRequestContext.CurrentUser = user;
                     }
 
-                    LCClassHookRequest req = new LCClassHookRequest {
+                    LCObject result = await LCEngine.Invoke(mi, new object[] { obj }) as LCObject;
-                        Object = obj,
-                        CurrentUser = user
-                    };
-
-                    LCObject result = await LCEngine.Invoke(mi, req) as LCObject;
                     if (result != null) {
                         return LCCloud.Encode(result);
                     }
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }

Engine/Controllers/LCFunctionController.cs

@@ -3,11 +3,11 @@ using System.Text.Json;
 using System.Threading.Tasks;
 using System.Collections.Generic;
 using System.Reflection;
+using System.Linq;
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.Extensions.Primitives;
 using Microsoft.AspNetCore.Cors;
-using LeanCloud.Storage.Internal.Codec;
 using LeanCloud.Storage;
+using LeanCloud.Storage.Internal.Codec;
 
 namespace LeanCloud.Engine {
     [ApiController]
@@ -32,26 +32,18 @@ namespace LeanCloud.Engine {
                 LCLogger.Debug(body.ToString());
 
                 if (Functions.TryGetValue(funcName, out MethodInfo mi)) {
-                    LCUser currentUser = null;
+                    LCEngine.InitRequestContext(Request);
-                    if (Request.Headers.TryGetValue("x-lc-session", out StringValues session)) {
+
-                        currentUser = await LCUser.BecomeWithSessionToken(session);
+                    object[] ps = ParseParameters(mi, body);
-                    }
+                    object result = await LCEngine.Invoke(mi, ps.ToArray());
-                    LCCloudFunctionRequest req = new LCCloudFunctionRequest {
+
-                        Meta = new LCCloudFunctionRequestMeta {
-                            RemoteAddress = LCEngine.GetIP(Request)
-                        },
-                        Params = LCEngine.Decode(body),
-                        SessionToken = session.ToString(),
-                        User = currentUser
-                    };
-                    object result = await LCEngine.Invoke(mi, req);
                     if (result != null) {
                         return new Dictionary<string, object> {
                             { "result", result }
                         };
                     }
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }
@@ -64,29 +56,44 @@ namespace LeanCloud.Engine {
                 LCLogger.Debug(body.ToString());
 
                 if (Functions.TryGetValue(funcName, out MethodInfo mi)) {
-                    LCUser currentUser = null;
+                    LCEngine.InitRequestContext(Request);
-                    if (Request.Headers.TryGetValue("x-lc-session", out StringValues session)) {
+
-                        currentUser = await LCUser.BecomeWithSessionToken(session);
+                    object[] ps = ParseParameters(mi, body);
-                    }
+                    object result = await LCEngine.Invoke(mi, ps);
-                    LCCloudRPCRequest req = new LCCloudRPCRequest {
+
-                        Meta = new LCCloudFunctionRequestMeta {
-                            RemoteAddress = LCEngine.GetIP(Request)
-                        },
-                        Params = LCDecoder.Decode(LCEngine.Decode(body)),
-                        SessionToken = session.ToString(),
-                        User = currentUser
-                    };
-                    object result = await LCEngine.Invoke(mi, req);
                     if (result != null) {
                         return new Dictionary<string, object> {
                             { "result", LCCloud.Encode(result) }
                         };
                     }
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }
         }
+
+        private static object[] ParseParameters(MethodInfo mi, JsonElement body) {
+            Dictionary<string, object> parameters = LCEngine.Decode(body);
+            List<object> ps = new List<object>();
+
+            if (mi.GetParameters().Length > 0) {
+                if (Array.Exists(mi.GetParameters(),
+                    p => p.GetCustomAttribute<LCEngineFunctionParamAttribute>() != null)) {
+                    // 如果包含 LCEngineFunctionParamAttribute 的参数，则按照配对方式传递参数
+                    foreach (ParameterInfo pi in mi.GetParameters()) {
+                        LCEngineFunctionParamAttribute attr = pi.GetCustomAttribute<LCEngineFunctionParamAttribute>();
+                        if (attr != null) {
+                            string paramName = attr.ParamName;
+                            ps.Add(parameters[paramName]);
+                        }
+                    }
+                } else {
+                    ps.Add(LCDecoder.Decode(LCEngine.Decode(body)));
+                }
+            }
+
+            return ps.ToArray();
+        }
     }
 }

Engine/Controllers/LCUserHookController.cs

@@ -24,10 +24,12 @@ namespace LeanCloud.Engine {
                 LCEngine.CheckHookKey(Request);
 
                 if (UserHooks.TryGetValue(LCEngine.OnSMSVerified, out MethodInfo mi)) {
+                    LCEngine.InitRequestContext(Request);
+
                     Dictionary<string, object> dict = LCEngine.Decode(body);
                     return await Invoke(mi, dict);
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }
@@ -42,10 +44,12 @@ namespace LeanCloud.Engine {
                 LCEngine.CheckHookKey(Request);
 
                 if (UserHooks.TryGetValue(LCEngine.OnEmailVerified, out MethodInfo mi)) {
+                    LCEngine.InitRequestContext(Request);
+
                     Dictionary<string, object> dict = LCEngine.Decode(body);
                     return await Invoke(mi, dict);
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }
@@ -60,10 +64,12 @@ namespace LeanCloud.Engine {
                 LCEngine.CheckHookKey(Request);
 
                 if (UserHooks.TryGetValue(LCEngine.OnLogin, out MethodInfo mi)) {
+                    LCEngine.InitRequestContext(Request);
+
                     Dictionary<string, object> dict = LCEngine.Decode(body);
                     return await Invoke(mi, dict);
                 }
-                return default;
+                return body;
             } catch (Exception e) {
                 return StatusCode(500, e.Message);
             }
@@ -73,14 +79,10 @@ namespace LeanCloud.Engine {
             LCObjectData objectData = LCObjectData.Decode(dict["object"] as Dictionary<string, object>);
             objectData.ClassName = "_User";
 
-            LCObject obj = LCObject.Create("_User");
+            LCObject user = LCObject.Create("_User");
-            obj.Merge(objectData);
+            user.Merge(objectData);
 
-            LCUserHookRequest req = new LCUserHookRequest {
+            return await LCEngine.Invoke(mi, new object[] { user }) as LCObject;
-                CurrentUser = obj as LCUser
-            };
-
-            return await LCEngine.Invoke(mi, req) as LCObject;
         }
     }
 }

Engine/LCEngine.cs

@@ -7,8 +7,9 @@ using System.Text.Json;
 using Microsoft.AspNetCore.Http;
 using Newtonsoft.Json;
 using Microsoft.Extensions.Primitives;
-using LeanCloud.Common;
 using Microsoft.Extensions.DependencyInjection;
+using LeanCloud.Common;
+using LeanCloud.Storage;
 
 namespace LeanCloud.Engine {
     public class LCEngine {
@@ -202,6 +203,27 @@ namespace LeanCloud.Engine {
             LCLogger.Debug($"{key} : {Environment.GetEnvironmentVariable(key)}");
         }
 
+        internal static async Task<object> Invoke(MethodInfo mi, object[] parameters) {
+            try {
+                if (mi.ReturnType == typeof(Task) ||
+                    (mi.ReturnType.IsGenericType && mi.ReturnType.GetGenericTypeDefinition() == typeof(Task<>))) {
+                    Task task = mi.Invoke(null, parameters) as Task;
+                    await task;
+                    return task.GetType().GetProperty("Result")?.GetValue(task);
+                }
+                return mi.Invoke(null, parameters);
+            } catch (TargetInvocationException e) {
+                Exception ex = e.InnerException;
+                if (ex is LCException lcEx) {
+                    throw new Exception(JsonConvert.SerializeObject(new Dictionary<string, object> {
+                        { "code", lcEx.Code },
+                        { "message", lcEx.Message }
+                    }));
+                }
+                throw ex;
+            }
+        }
+
         internal static async Task<object> Invoke(MethodInfo mi, object request) {
             try {
                 object[] ps = null;
@@ -234,6 +256,16 @@ namespace LeanCloud.Engine {
             return dict;
         }
 
+        internal static void InitRequestContext(HttpRequest request) {
+            LCEngineRequestContext.Init();
+
+            LCEngineRequestContext.RemoteAddress = GetIP(request);
+
+            if (request.Headers.TryGetValue("x-lc-session", out StringValues session)) {
+                LCEngineRequestContext.SessionToken = session;
+            }
+        }
+
         internal static string GetIP(HttpRequest request) {
             if (request.Headers.TryGetValue("x-real-ip", out StringValues ip)) {
                 return ip.ToString();

Engine/LCEngineRequestContext.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using LeanCloud.Storage;
+
+namespace LeanCloud.Engine {
+    public class LCEngineRequestContext {
+        public const string RemoteAddressKey = "remoteAddressKey";
+        public const string SessionTokenKey = "sessionToken";
+        public const string CurrentUserKey = "currentUser";
+
+        private static ThreadLocal<Dictionary<string, object>> requestContext = new ThreadLocal<Dictionary<string, object>>();
+
+        public static void Init() {
+            if (requestContext.IsValueCreated) {
+                requestContext.Value.Clear();
+            }
+            requestContext.Value = new Dictionary<string, object>();
+        }
+
+        public static void Set(string key, object value) {
+            if (!requestContext.IsValueCreated) {
+                requestContext.Value = new Dictionary<string, object>();
+            }
+            requestContext.Value[key] = value;
+        }
+
+        public static object Get(string key) {
+            if (!requestContext.IsValueCreated) {
+                return null;
+            }
+            return requestContext.Value[key];
+        }
+        
+        public static string RemoteAddress {
+            get {
+                object remoteAddress = Get(RemoteAddressKey);
+                if (remoteAddress != null) {
+                    return remoteAddress as string;
+                }
+                return null;
+            }
+            set {
+                Set(RemoteAddressKey, value);
+            }
+        }
+
+        public static string SessionToken {
+            get {
+                object sessionToken = Get(SessionTokenKey);
+                if (sessionToken != null) {
+                    return sessionToken as string;
+                }
+                return null;
+            }
+            set {
+                Set(SessionTokenKey, value);
+            }
+        }
+
+        public static LCUser CurrentUser {
+            get {
+                object currentUser = Get(CurrentUserKey);
+                if (currentUser != null) {
+                    return currentUser as LCUser;
+                }
+                return null;
+            }
+            set {
+                Set(CurrentUserKey, value);
+            }
+        }
+    }
+}

Engine/Requests/LCClassHookRequest.cs

@@ -1,13 +0,0 @@
-using LeanCloud.Storage;
-
-namespace LeanCloud.Engine {
-    public class LCClassHookRequest {
-        public LCObject Object {
-            get; set;
-        }
-
-        public LCUser CurrentUser {
-            get; set;
-        }
-    }
-}

Engine/Requests/LCCloudFunctionRequest.cs

@@ -1,28 +0,0 @@
-using System.Collections.Generic;
-using LeanCloud.Storage;
-
-namespace LeanCloud.Engine {
-    public class LCCloudFunctionRequestMeta {
-        public string RemoteAddress {
-            get; set;
-        }
-    }
-
-    public class LCCloudFunctionRequest {
-        public LCCloudFunctionRequestMeta Meta {
-            get; set;
-        }
-
-        public Dictionary<string, object> Params {
-            get; set;
-        }
-
-        public LCUser User {
-            get; set;
-        }
-
-        public string SessionToken {
-            get; set;
-        }
-    }
-}

Engine/Requests/LCCloudRPCRequest.cs

@@ -1,21 +0,0 @@
-using LeanCloud.Storage;
-
-namespace LeanCloud.Engine {
-    public class LCCloudRPCRequest {
-        public LCCloudFunctionRequestMeta Meta {
-            get; set;
-        }
-
-        public object Params {
-            get; set;
-        }
-
-        public LCUser User {
-            get; set;
-        }
-
-        public string SessionToken {
-            get; set;
-        }
-    }
-}

Engine/Requests/LCUserHookRequest.cs

@@ -1,9 +0,0 @@
-using LeanCloud.Storage;
-
-namespace LeanCloud.Engine {
-    public class LCUserHookRequest {
-        public LCUser CurrentUser {
-            get; set;
-        }
-    }
-}

Storage/Storage.Test/CloudTest.cs

@@ -10,7 +10,8 @@ namespace Storage.Test {
         [SetUp]
         public void SetUp() {
             LCLogger.LogDelegate += Utils.Print;
-            LCApplication.Initialize("ikGGdRE2YcVOemAaRbgp1xGJ-gzGzoHsz", "NUKmuRbdAhg1vrb2wexYo1jo", "https://ikggdre2.lc-cn-n1-shared.com");
+            //LCApplication.Initialize("ikGGdRE2YcVOemAaRbgp1xGJ-gzGzoHsz", "NUKmuRbdAhg1vrb2wexYo1jo", "https://ikggdre2.lc-cn-n1-shared.com");
+            LCApplication.Initialize("8ijVI3gBAnPGynW0rVfh5gHP-gzGzoHsz", "265r8JSHhNYpV0qIJBvUWrQY", "https://8ijvi3gb.lc-cn-n1-shared.com");
         }
 
         [TearDown]
@@ -24,7 +25,7 @@ namespace Storage.Test {
                 { "name", "world" }
             });
             TestContext.WriteLine(response["result"]);
-            Assert.AreEqual(response["result"], "hello, world");
+            Assert.AreEqual(response["result"], "Hello, world!");
         }
 
         [Test]
@@ -41,5 +42,35 @@ namespace Storage.Test {
                 Assert.NotNull(item.ObjectId);
             }
         }
+
+        [Test]
+        public async Task RPCObject() {
+            LCQuery<LCObject> query = new LCQuery<LCObject>("Todo");
+            LCObject todo = await query.Get("6052cd87b725a143ea83dbf8");
+            object result = await LCCloud.RPC("getTodo", todo);
+            LCObject obj = result as LCObject;
+            TestContext.WriteLine(obj.ToString());
+        }
+
+        [Test]
+        public async Task RPCObjects() {
+            Dictionary<string, object> parameters = new Dictionary<string, object> {
+                { "limit", 20 }
+            };
+            List<object> result = await LCCloud.RPC("getTodos", parameters) as List<object>;
+            IEnumerable<LCObject> todos = result.Cast<LCObject>();
+            foreach (LCObject todo in todos) {
+                TestContext.WriteLine(todo.ObjectId);
+            }
+        }
+
+        [Test]
+        public async Task RPCObjectMap() {
+            Dictionary<string, object> result = await LCCloud.RPC("getTodoMap") as Dictionary<string, object>;
+            foreach (KeyValuePair<string, object> kv in result) {
+                LCObject todo = kv.Value as LCObject;
+                TestContext.WriteLine(todo.ObjectId);
+            }
+        }
     }
 }

Storage/Storage/LCCloud.cs

@@ -55,15 +55,23 @@ namespace LeanCloud.Storage {
         }
 
         public static object Encode(object parameters) {
+            if (parameters == null) {
+                return new Dictionary<string, object>();
+            }
+
             if (parameters is LCObject lcObj) {
                 return EncodeLCObject(lcObj);
-            } else if (parameters is IList<LCObject> list) {
+            }
+
+            if (parameters is IList<LCObject> list) {
                 List<object> l = new List<object>();
                 foreach (LCObject obj in list) {
                     l.Add(EncodeLCObject(obj));
                 }
                 return l;
-            } else if (parameters is IDictionary<string, LCObject> dict) {
+            }
+
+            if (parameters is IDictionary<string, LCObject> dict) {
                 Dictionary<string, object> d = new Dictionary<string, object>();
                 foreach (KeyValuePair<string, LCObject> item in dict) {
                     d[item.Key] = EncodeLCObject(item.Value);
@@ -75,9 +83,11 @@ namespace LeanCloud.Storage {
         }
 
         static object EncodeLCObject(LCObject obj) {
-            obj.ApplyCustomProperties();
             Dictionary<string, object> dict = LCObjectData.Encode(obj.data);
             dict["__type"] = "Object";
+            foreach (KeyValuePair<string, object> kv in obj.estimatedData) {
+                dict[kv.Key] = kv.Value;
+            }
             return dict;
         }
     }

Storage/Storage/LCHookObject.cs

@@ -46,13 +46,15 @@ namespace LeanCloud.Storage {
             ApplyOperation(IgnoreHooksKey, op);
         }
 
-        public ReadOnlyCollection<string> UpdatedKeys {
+        public ReadOnlyCollection<string> GetUpdatedKeys() {
-            get {
+            if (this["_updatedKeys"] == null) {
+                return null;
+            }
+
             return (this["_updatedKeys"] as List<object>)
                 .Cast<string>()
                 .ToList()
                 .AsReadOnly();
         }
     }
-    }
 }

Storage/Storage/LCObject.cs

@@ -494,7 +494,7 @@ namespace LeanCloud.Storage {
             data.CreatedAt = objectData.CreatedAt != null ? objectData.CreatedAt : data.CreatedAt;
             data.UpdatedAt = objectData.UpdatedAt != null ? objectData.UpdatedAt : data.UpdatedAt;
             // 先将本地的预估数据直接替换
-            ApplyCustomProperties();
+            data.CustomPropertyDict = estimatedData;
             // 再将服务端的数据覆盖
             foreach (KeyValuePair<string, object> kv in objectData.CustomPropertyDict) {
                 string key = kv.Key;
@@ -509,10 +509,6 @@ namespace LeanCloud.Storage {
             isNew = false;
         }
 
-        public void ApplyCustomProperties() {
-            data.CustomPropertyDict = estimatedData;
-        }
-
         void RebuildEstimatedData() {
             estimatedData = new Dictionary<string, object>();
             foreach (KeyValuePair<string, object> kv in data.CustomPropertyDict) {