108 lines
3.0 KiB
C#
108 lines
3.0 KiB
C#
using MediaBrowser.Model.Events;
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using MediaBrowser.Model.Tasks;
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using System;
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using System.Threading;
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namespace MediaBrowser.Common.ScheduledTasks
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{
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/// <summary>
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/// Represents a task trigger that runs repeatedly on an interval
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/// </summary>
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public class IntervalTrigger : ITaskTrigger
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{
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/// <summary>
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/// Gets or sets the interval.
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/// </summary>
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/// <value>The interval.</value>
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public TimeSpan Interval { get; set; }
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/// <summary>
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/// Gets or sets the timer.
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/// </summary>
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/// <value>The timer.</value>
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private Timer Timer { get; set; }
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/// <summary>
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/// Gets the execution properties of this task.
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/// </summary>
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/// <value>
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/// The execution properties of this task.
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/// </value>
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public TaskExecutionOptions TaskOptions { get; set; }
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/// <summary>
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/// Gets or sets the first run delay.
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/// </summary>
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/// <value>The first run delay.</value>
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public TimeSpan FirstRunDelay { get; set; }
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public IntervalTrigger()
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{
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FirstRunDelay = TimeSpan.FromHours(1);
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}
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/// <summary>
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/// Stars waiting for the trigger action
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/// </summary>
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/// <param name="lastResult">The last result.</param>
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/// <param name="isApplicationStartup">if set to <c>true</c> [is application startup].</param>
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public void Start(TaskResult lastResult, bool isApplicationStartup)
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{
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DisposeTimer();
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var triggerDate = lastResult != null ?
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lastResult.EndTimeUtc.Add(Interval) :
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DateTime.UtcNow.Add(FirstRunDelay);
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if (DateTime.UtcNow > triggerDate)
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{
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if (isApplicationStartup)
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{
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triggerDate = DateTime.UtcNow.AddMinutes(1);
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}
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else
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{
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triggerDate = DateTime.UtcNow.AddSeconds(10);
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}
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}
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Timer = new Timer(state => OnTriggered(), null, triggerDate - DateTime.UtcNow, TimeSpan.FromMilliseconds(-1));
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}
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/// <summary>
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/// Stops waiting for the trigger action
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/// </summary>
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public void Stop()
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{
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DisposeTimer();
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}
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/// <summary>
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/// Disposes the timer.
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/// </summary>
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private void DisposeTimer()
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{
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if (Timer != null)
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{
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Timer.Dispose();
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}
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}
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/// <summary>
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/// Occurs when [triggered].
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/// </summary>
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public event EventHandler<GenericEventArgs<TaskExecutionOptions>> Triggered;
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/// <summary>
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/// Called when [triggered].
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/// </summary>
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private void OnTriggered()
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{
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if (Triggered != null)
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{
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Triggered(this, new GenericEventArgs<TaskExecutionOptions>(TaskOptions));
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}
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}
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}
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}
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