Version 0.2 changes

2026-10-02 08:19:12 +00:00 · 2016-03-05 15:25:01 +01:00
parent 92e69371b4
commit 8c12f027b8
370 changed files with 40993 additions and 26326 deletions
@@ -0,0 +1,115 @@
+//
+// Cluster.cs
+//
+// Author:
+//       Carsten Sonne Larsen <cs@innolan.net>
+//
+// Copyright (c) 2014 Carsten Sonne Larsen
+//
+// 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 Ntp.Analyzer.Log;
+using System.Threading;
+
+namespace Ntp.Process
+{
+    public sealed class Cluster
+    {
+        public Cluster(Scheduler scheduler, IEnumerable<IRequest> peers, LogBase log)
+        {
+            this.scheduler = scheduler;
+            this.peers = peers;
+            this.log = log;
+        }
+
+        private readonly Scheduler scheduler;
+        private readonly IEnumerable<IRequest> peers;
+        private readonly LogBase log;
+
+        public void Activate()
+        {
+            log.WriteLine("Starting cluster module.", Severity.Info);
+
+            bool activated = true;
+
+            while (true)
+            {
+
+                bool otherActive = false;
+
+                foreach (IRequest request in peers)
+                {
+
+                    try
+                    {
+                        string answer = request.Send("ping");
+
+                        if (answer != null && answer == "*" && activated)
+                        {
+                            log.WriteLine("Cluster node alive: " + request, Severity.Notice);
+                        }
+                        else if (answer != null && answer == "active" && activated)
+                        {
+                            log.WriteLine("Cluster node active: " + request, Severity.Notice);
+                        }
+                        else if (activated)
+                        {
+                            log.WriteLine("Cluster node dead: " + request, Severity.Notice);
+                        }
+
+                        if (answer != null && answer == "active")
+                        {
+                            otherActive = true;
+                        }
+                    }
+                    catch (Exception)
+                    {
+                        log.WriteLine("Error while contacting cluster node " + request, Severity.Warn);
+                    }
+                }
+
+                if (!otherActive)
+                {
+                    //log.WriteLine ("No other nodes active. Activting node.", Severity.Notice);
+
+                    try
+                    {
+                        scheduler.RunOneCycle();
+                    }
+                    catch (Exception e)
+                    {
+                        log.WriteLine("Error in scheduler module. Arborting.", Severity.Error);
+                        log.WriteLine(e.ToString(), Severity.Error);
+                        return;
+                    }
+                }
+                else
+                {
+                    //log.WriteLine ("Other node active. Going to fallback mode.", Severity.Notice);
+
+                    Thread.Sleep(10000);
+                }
+
+                activated = false;
+            }
+        }
+    }
+}