Update MON:

- gestione tramite REDIS CHANNEL - refresh sincrono
2022-07-12 18:44:57 +02:00
parent 97741b4973
commit ee043f81be
8 changed files with 318 additions and 30 deletions
@@ -0,0 +1,135 @@
+using NLog;
+using StackExchange.Redis;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MP.Data
+{
+    public class MessagePipe
+    {
+        #region Private Fields
+
+        private bool enableLog = false;
+        private IConnectionMultiplexer redis;
+        private IDatabase? redisDb;
+
+        #endregion Private Fields
+
+        #region Protected Fields
+
+        protected static Logger Log = LogManager.GetCurrentClassLogger();
+
+        #endregion Protected Fields
+
+        #region Public Constructors
+
+        public MessagePipe(IConnectionMultiplexer redisConn, string channelName, bool enableLog = false)
+        {
+            _channel = channelName;
+            redis = redisConn;
+            redisDb = redis.GetDatabase();
+            this.enableLog = enableLog;
+            // aggiungo sottoscrittore
+            setupSubscriber();
+        }
+
+        #endregion Public Constructors
+
+        #region Public Events
+
+        public event EventHandler EA_NewMessage = delegate { };
+
+        #endregion Public Events
+
+        #region Private Properties
+
+        /// <summary>
+        /// Canale associato al gestore pipeline messaggi
+        /// </summary>
+        private string _channel { get; set; } = "";
+
+        #endregion Private Properties
+
+        #region Private Methods
+
+        private void setupSubscriber()
+        {
+            ISubscriber sub = redis.GetSubscriber();
+            //Subscribe to the channel named messages
+            sub.Subscribe(_channel, (channel, message) =>
+            {
+                Log.Trace($"ch {channel} | {message}");
+                // messaggio
+                PubSubEventArgs mea = new PubSubEventArgs(message);
+                // se qualcuno ascolta sollevo evento nuovo valore...
+                if (EA_NewMessage != null)
+                {
+                    EA_NewMessage(this, mea);
+                }
+            });
+            Log.Info($"Subscribed {_channel}");
+        }
+
+        #endregion Private Methods
+
+        #region Public Methods
+
+        public bool saveAndSendMessage(string memKey, string message)
+        {
+            bool answ = false;
+            // invio notifica tramite il canale richiesto
+            answ = sendMessage(message);
+            if (redisDb != null)
+            {
+                redisDb.StringSetAsync(memKey, message);
+                if (enableLog)
+                {
+                    Log.Info($"Redis Cache Key: {memKey}");
+                }
+            }
+            return answ;
+        }
+
+        /// <summary>
+        /// Invio messaggio sul canale
+        /// </summary>
+        /// <param name="newMess"></param>
+        /// <returns></returns>
+        public bool sendMessage(string newMess)
+        {
+            bool answ = false;
+            ISubscriber sub = redis.GetSubscriber();
+            sub.Publish(_channel, newMess);
+            return answ;
+        }
+
+        #endregion Public Methods
+
+        /// <summary>
+        /// Invio messaggio sul canale + salvataggio in cache REDIS
+        /// </summary>
+        /// <param name="memKey">Chiave REDIS x salvare valore</param>
+        /// <param name="message"></param>
+    }
+
+    public class PubSubEventArgs : EventArgs
+    {
+        #region Public Constructors
+
+        public PubSubEventArgs(string messaggio)
+        {
+            this.newMessage = messaggio;
+        }
+
+        #endregion Public Constructors
+
+        #region Public Properties
+
+        public string newMessage { get; set; } = "";
+
+        #endregion Public Properties
+    }
+}