Add project files.

1 files changed, 53 insertions, 0 deletions

diff --git a/VNLib.Plugins.Extensions.Loading/Events/EventManagment.cs b/VNLib.Plugins.Extensions.Loading/Events/EventManagment.cs
new file mode 100644
index 0000000..1afac22
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+++ b/VNLib.Plugins.Extensions.Loading/Events/EventManagment.cs
@@ -0,0 +1,53 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+using VNLib.Utils.Logging;
+
+namespace VNLib.Plugins.Extensions.Loading.Events
+{
+
+    /// <summary>
+    /// A deletage to form a method signature for shedulable interval callbacks
+    /// </summary>
+    /// <param name="log">The plugin's default log provider</param>
+    /// <param name="pluginExitToken">The plugin's exit token</param>
+    /// <returns>A task the represents the asynchronous work</returns>
+    public delegate Task AsyncSchedulableCallback(ILogProvider log, CancellationToken pluginExitToken);
+
+    /// <summary>
+    /// Provides event schedueling extensions for plugins
+    /// </summary>
+    public static class EventManagment
+    {
+        /// <summary>
+        /// Schedules an asynchronous event interval for the current plugin, that is active until canceled or until the plugin unloads
+        /// </summary>
+        /// <param name="plugin"></param>
+        /// <param name="asyncCallback">An asyncrhonous callback method.</param>
+        /// <param name="interval">The event interval</param>
+        /// <returns>An <see cref="EventHandle"/> that can manage the interval state</returns>
+        /// <exception cref="ObjectDisposedException"></exception>
+        /// <remarks>If exceptions are raised during callback execution, they are written to the plugin's default log provider</remarks>
+        public static EventHandle ScheduleInterval(this PluginBase plugin, AsyncSchedulableCallback asyncCallback, TimeSpan interval)
+        {
+            plugin.ThrowIfUnloaded();
+            
+            plugin.Log.Verbose("Interval for {t} scheduled", interval);
+            //Load new event handler
+            return new(asyncCallback, interval, plugin);
+        }
+        /// <summary>
+        /// Registers an <see cref="IIntervalScheduleable"/> type's event handler for 
+        /// raising timed interval events
+        /// </summary>
+        /// <param name="plugin"></param>
+        /// <param name="scheduleable">The instance to schedule for timeouts</param>
+        /// <param name="interval">The timeout interval</param>
+        /// <returns>An <see cref="EventHandle"/> that can manage the interval state</returns>
+        /// <exception cref="ObjectDisposedException"></exception>
+        /// <remarks>If exceptions are raised during callback execution, they are written to the plugin's default log provider</remarks>
+        public static EventHandle ScheduleInterval(this PluginBase plugin, IIntervalScheduleable scheduleable, TimeSpan interval) => 
+            ScheduleInterval(plugin, scheduleable.OnIntervalAsync, interval);
+    }
+}