Rename

Esiur/Core/AsyncReply.cs

@@ -0,0 +1,351 @@
+/*
+ 
+Copyright (c) 2017 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Esiur.Resource;
+using System.Reflection;
+using System.Threading;
+using System.Runtime.CompilerServices;
+using System.Diagnostics;
+
+namespace Esiur.Core
+{
+    [AsyncMethodBuilder(typeof(AsyncReplyBuilder))]
+    public class AsyncReply 
+    {
+        public bool Debug = false;
+
+        protected List<Action<object>> callbacks = new List<Action<object>>();
+        protected object result;
+
+        protected List<Action<AsyncException>> errorCallbacks = new List<Action<AsyncException>>();
+
+        protected List<Action<ProgressType, int, int>> progressCallbacks = new List<Action<ProgressType, int, int>>();
+
+        protected List<Action<object>> chunkCallbacks = new List<Action<object>>();
+
+        //List<AsyncAwaiter> awaiters = new List<AsyncAwaiter>();
+
+        object asyncLock = new object();
+
+        //public Timer timeout;// = new Timer()
+        protected bool resultReady = false;
+        AsyncException exception;
+        // StackTrace trace;
+        AutoResetEvent mutex = new AutoResetEvent(false);
+
+        public static int MaxId;
+
+        public int Id;
+
+        public bool Ready
+        {
+            get { return resultReady; }
+
+        }
+
+
+        public object Wait()
+        {
+            if (resultReady)
+                return result;
+
+            if (Debug)
+                Console.WriteLine($"AsyncReply: {Id} Wait");
+
+            //mutex = new AutoResetEvent(false);
+            mutex.WaitOne();
+
+            if (Debug)
+                Console.WriteLine($"AsyncReply: {Id} Wait ended");
+
+
+            return result;
+        }
+
+
+        public object Wait(int millisecondsTimeout)
+        {
+            if (resultReady)
+                return result;
+
+            if (Debug)
+                Console.WriteLine($"AsyncReply: {Id} Wait");
+
+            if (!mutex.WaitOne(millisecondsTimeout))
+            {
+                var e = new Exception("AsyncReply timeout");
+                TriggerError(e);
+                throw e;
+            }
+
+            if (Debug)
+                Console.WriteLine($"AsyncReply: {Id} Wait ended");
+
+            return result;
+        }
+
+        public object Result
+        {
+            get { return result; }
+        }
+
+
+        public AsyncReply Then(Action<object> callback)
+        {
+            //lock (callbacksLock)
+            //{
+            lock (asyncLock)
+            {
+                //  trace = new StackTrace();
+
+                if (resultReady)
+                {
+                    if (Debug)
+                        Console.WriteLine($"AsyncReply: {Id} Then ready");
+
+                    callback(result);
+                    return this;
+                }
+
+
+                //timeout = new Timer(x =>
+                //{
+                //    // Get calling method name
+                //    Console.WriteLine(trace.GetFrame(1).GetMethod().Name);
+
+                //    var tr = String.Join("\r\n", trace.GetFrames().Select(f => f.GetMethod().Name));
+                //    timeout.Dispose();
+
+                //    tr = trace.ToString();
+                //    throw new Exception("Request timeout " + Id);
+                //}, null, 15000, 0);
+
+
+                if (Debug)
+                    Console.WriteLine($"AsyncReply: {Id} Then pending");
+
+
+
+                callbacks.Add(callback);
+
+                return this;
+            }
+        }
+
+
+
+        public AsyncReply Error(Action<AsyncException> callback)
+        {
+            // lock (callbacksLock)
+            //  {
+            errorCallbacks.Add(callback);
+
+            if (exception != null)
+                callback(exception);
+
+            return this;
+            //}
+        }
+
+        public AsyncReply Progress(Action<ProgressType, int, int> callback)
+        {
+            //lock (callbacksLock)
+            //{
+            progressCallbacks.Add(callback);
+            return this;
+            //}
+        }
+
+
+        public AsyncReply Chunk(Action<object> callback)
+        {
+            // lock (callbacksLock)
+            // {
+            chunkCallbacks.Add(callback);
+            return this;
+            // }
+        }
+
+        public void Trigger(object result)
+        {
+            lock (asyncLock)
+            {
+                //timeout?.Dispose();
+
+                if (Debug)
+                    Console.WriteLine($"AsyncReply: {Id} Trigger");
+
+                if (resultReady)
+                    return;
+
+                this.result = result;
+
+                resultReady = true;
+
+                //if (mutex != null)
+                mutex.Set();
+
+                foreach (var cb in callbacks)
+                    cb(result);
+
+
+                if (Debug)
+                    Console.WriteLine($"AsyncReply: {Id} Trigger ended");
+
+            }
+        }
+
+        public void TriggerError(Exception exception)
+        {
+            //timeout?.Dispose();
+
+            if (resultReady)
+                return;
+
+            if (exception is AsyncException)
+                this.exception = exception as AsyncException;
+            else
+                this.exception = new AsyncException(exception);
+
+            
+            // lock (callbacksLock)
+            // {
+            foreach (var cb in errorCallbacks)
+                cb(this.exception);
+            //  }
+
+            mutex?.Set();
+
+        }
+
+        public void TriggerProgress(ProgressType type, int value, int max)
+        {
+            //timeout?.Dispose();
+
+            //lock (callbacksLock)
+            //{
+            foreach (var cb in progressCallbacks)
+                cb(type, value, max);
+
+            //}
+        }
+
+
+        public void TriggerChunk(object value)
+        {
+
+            //timeout?.Dispose();
+
+            
+            //lock (callbacksLock)
+            //{
+            foreach (var cb in chunkCallbacks)
+                cb(value);
+
+            //}
+        }
+
+        public AsyncAwaiter GetAwaiter()
+        {
+            return new AsyncAwaiter(this);
+        }
+
+
+
+        public AsyncReply()
+        {
+            //   this.Debug = true;
+            Id = MaxId++;
+        }
+
+        public AsyncReply(object result)
+        {
+            //   this.Debug = true;
+            resultReady = true;
+            this.result = result;
+
+            Id = MaxId++;
+        }
+
+        /*
+    public AsyncReply<T> Then(Action<T> callback)
+        {
+           base.Then(new Action<object>(o => callback((T)o)));
+            return this;
+        }
+
+        public void Trigger(T result)
+        {
+            Trigger((object)result);
+        }
+
+        public Task<bool> MoveNext(CancellationToken cancellationToken)
+        {
+            throw new NotImplementedException();
+        }
+
+        public void Dispose()
+        {
+         }
+
+        public AsyncReply()
+        {
+            
+        }
+
+        public new Task<T> Task
+        {
+            get
+            {
+                return base.Task.ContinueWith<T>((t) =>
+                {
+
+#if NETSTANDARD
+                    return (T)t.GetType().GetTypeInfo().GetProperty("Result").GetValue(t);
+#else
+                    return (T)t.GetType().GetProperty("Result").GetValue(t);
+#endif
+                });
+            }
+        }
+
+        public T Current => throw new NotImplementedException();
+
+        public AsyncReply(T result)
+            : base(result)
+        {
+
+        }
+
+ */
+
+
+
+    }
+}