init

Common/DTS.Common.Utilities/KeywordAlert.cs

@@ -0,0 +1,46 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace DTS.Common.Utilities
+{
+    public sealed class KeywordAlert
+    {
+        public static KeywordAlert Instance { get; } = new KeywordAlert();
+
+        private List<string> alerts = null;
+
+        private const string KeywordFile = "Keywords.txt";
+        private KeywordAlert()
+        {
+            try
+            {
+                if (System.IO.File.Exists(KeywordFile))
+                {
+                    alerts = new List<string>(System.IO.File.ReadAllLines(KeywordFile));
+                }
+            }
+            catch (System.Exception) { }
+        }
+
+        public void ProcessMsg(string msg)
+        {
+            if (null != alerts)
+            {
+                System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(DoWork), msg);
+            }
+        }
+        private void DoWork(object o)
+        {
+            var msg = o as string;
+            var keys = alerts.ToArray();//avoid accessing the list since many threads may be operating simultaneously
+
+            var matches = from k in keys.AsParallel() where msg.Contains(k) select k;
+            if (matches.Any())
+            {
+                var foundKeys = string.Join(", ", matches.ToArray());
+            }
+        }
+    }
+}