From 751e1a107195f0c9c98c866e8267a5a760545982 Mon Sep 17 00:00:00 2001
From: vnugent <public@vaughnnugent.com>
Date: Thu, 12 Jan 2023 17:47:41 -0500
Subject: Large project reorder and consolidation

---
 .../src/MemorySessionEntrypoint.cs                 | 95 ++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100644 libs/VNLib.Plugins.Sessions.Memory/src/MemorySessionEntrypoint.cs

(limited to 'libs/VNLib.Plugins.Sessions.Memory/src/MemorySessionEntrypoint.cs')

diff --git a/libs/VNLib.Plugins.Sessions.Memory/src/MemorySessionEntrypoint.cs b/libs/VNLib.Plugins.Sessions.Memory/src/MemorySessionEntrypoint.cs
new file mode 100644
index 0000000..57c3898
--- /dev/null
+++ b/libs/VNLib.Plugins.Sessions.Memory/src/MemorySessionEntrypoint.cs
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 2022 Vaughn Nugent
+* 
+* Library: VNLib
+* Package: VNLib.Plugins.Essentials.Sessions.Memory
+* File: MemorySessionEntrypoint.cs 
+*
+* MemorySessionEntrypoint.cs is part of VNLib.Plugins.Essentials.Sessions.Memory which is part of the larger 
+* VNLib collection of libraries and utilities.
+*
+* VNLib.Plugins.Essentials.Sessions.Memory is free software: you can redistribute it and/or modify 
+* it under the terms of the GNU Affero General Public License as 
+* published by the Free Software Foundation, either version 3 of the
+* License, or (at your option) any later version.
+*
+* VNLib.Plugins.Essentials.Sessions.Memory is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU Affero General Public License for more details.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program.  If not, see https://www.gnu.org/licenses/.
+*/
+
+using System;
+using System.Text.Json;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Collections.Generic;
+
+using VNLib.Net.Http;
+using VNLib.Utils.Logging;
+using VNLib.Utils.Extensions;
+using VNLib.Plugins.Essentials.Sessions;
+using VNLib.Plugins.Extensions.Loading.Events;
+using VNLib.Plugins.Extensions.Loading;
+
+namespace VNLib.Plugins.Sessions.Memory
+{
+
+    /// <summary>
+    /// Dynamically loadable session provider
+    /// </summary>
+    public sealed class MemorySessionEntrypoint : ISessionProvider, IIntervalScheduleable
+    {
+        const string WEB_SESSION_CONFIG = "web";
+
+        private MemorySessionStore? _sessions;
+
+        public bool CanProcess(IHttpEvent entity)
+        {
+            //Web sessions can always be provided
+            return _sessions != null;
+        }
+
+        public ValueTask<SessionHandle> GetSessionAsync(IHttpEvent entity, CancellationToken cancellationToken)
+        {
+            return _sessions!.GetSessionAsync(entity, cancellationToken);
+        }
+
+        public void Load(PluginBase plugin, ILogProvider localized)
+        {
+            //Get websessions config element
+
+            IReadOnlyDictionary<string, JsonElement> webSessionConfig = plugin.GetConfig(WEB_SESSION_CONFIG);
+
+            MemorySessionConfig config = new()
+            {
+                SessionLog = localized,
+                MaxAllowedSessions = webSessionConfig["cache_size"].GetInt32(),
+                SessionIdSizeBytes = webSessionConfig["cookie_size"].GetUInt32(),
+                SessionTimeout = webSessionConfig["valid_for_sec"].GetTimeSpan(TimeParseType.Seconds),
+                SessionCookieID = webSessionConfig["cookie_name"].GetString() ?? throw new KeyNotFoundException($"Missing required element 'cookie_name' for config '{WEB_SESSION_CONFIG}'"),
+            };
+
+            _sessions = new(config);
+
+            //Begin listening for expired records
+            _ = plugin.DeferTask(() => _sessions.CleanupExiredAsync(localized, plugin.UnloadToken));
+
+            //Schedule garbage collector
+            plugin.ScheduleInterval(this, TimeSpan.FromMinutes(1));
+
+            //Call cleanup on exit
+            _ = plugin.RegisterForUnload(_sessions.Cleanup);
+        }
+
+        Task IIntervalScheduleable.OnIntervalAsync(ILogProvider log, CancellationToken cancellationToken)
+        {
+            //Cleanup expired sessions on interval
+            _sessions?.GC();
+            return Task.CompletedTask;
+        }
+    }
+}
-- 
cgit