plugin security fixes and other abstractions

MediaBrowser.Common/ScheduledTasks/IScheduledTaskWorker.cs

@@ -0,0 +1,86 @@
+using MediaBrowser.Model.Tasks;
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Common.ScheduledTasks
+{
+    /// <summary>
+    /// Interface IScheduledTaskWorker
+    /// </summary>
+    public interface IScheduledTaskWorker : IDisposable
+    {
+        /// <summary>
+        /// Gets or sets the scheduled task.
+        /// </summary>
+        /// <value>The scheduled task.</value>
+        IScheduledTask ScheduledTask { get; }
+
+        /// <summary>
+        /// Gets the last execution result.
+        /// </summary>
+        /// <value>The last execution result.</value>
+        TaskResult LastExecutionResult { get; }
+
+        /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        string Name { get; }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        /// <value>The description.</value>
+        string Description { get; }
+
+        /// <summary>
+        /// Gets the category.
+        /// </summary>
+        /// <value>The category.</value>
+        string Category { get; }
+
+        /// <summary>
+        /// Gets the state.
+        /// </summary>
+        /// <value>The state.</value>
+        TaskState State { get; }
+
+        /// <summary>
+        /// Gets the current progress.
+        /// </summary>
+        /// <value>The current progress.</value>
+        double? CurrentProgress { get; }
+
+        /// <summary>
+        /// Gets the triggers that define when the task will run
+        /// </summary>
+        /// <value>The triggers.</value>
+        /// <exception cref="System.ArgumentNullException">value</exception>
+        IEnumerable<ITaskTrigger> Triggers { get; set; }
+
+        /// <summary>
+        /// Gets the unique id.
+        /// </summary>
+        /// <value>The unique id.</value>
+        Guid Id { get; }
+
+        /// <summary>
+        /// Executes the task
+        /// </summary>
+        /// <returns>Task.</returns>
+        /// <exception cref="System.InvalidOperationException">Cannot execute a Task that is already running</exception>
+        Task Execute();
+
+        /// <summary>
+        /// Stops the task if it is currently executing
+        /// </summary>
+        /// <exception cref="System.InvalidOperationException">Cannot cancel a Task unless it is in the Running state.</exception>
+        void Cancel();
+
+        /// <summary>
+        /// Cancels if running.
+        /// </summary>
+        void CancelIfRunning();
+    }
+}