120 lines
3.9 KiB
C#
120 lines
3.9 KiB
C#
using MediaBrowser.Common.Kernel;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Common.ScheduledTasks.Tasks
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{
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/// <summary>
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/// Plugin Update Task
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/// </summary>
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[Export(typeof(IScheduledTask))]
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public class SystemUpdateTask : BaseScheduledTask<IKernel>
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{
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/// <summary>
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/// The _app host
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/// </summary>
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private readonly IApplicationHost _appHost;
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/// <summary>
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/// Initializes a new instance of the <see cref="SystemUpdateTask" /> class.
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/// </summary>
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/// <param name="appHost">The app host.</param>
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[ImportingConstructor]
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public SystemUpdateTask([Import("appHost")] IApplicationHost appHost)
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{
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_appHost = appHost;
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}
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/// <summary>
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/// Creates the triggers that define when the task will run
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/// </summary>
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/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
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protected override IEnumerable<BaseTaskTrigger> GetDefaultTriggers()
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{
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return new BaseTaskTrigger[] {
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// 1am
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new DailyTrigger { TimeOfDay = TimeSpan.FromHours(1) },
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new IntervalTrigger { Interval = TimeSpan.FromHours(2)}
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};
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}
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/// <summary>
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/// Returns the task to be executed
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/// </summary>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="progress">The progress.</param>
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/// <returns>Task.</returns>
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protected override async Task ExecuteInternal(CancellationToken cancellationToken, IProgress<double> progress)
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{
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if (!_appHost.CanSelfUpdate) return;
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EventHandler<double> innerProgressHandler = (sender, e) => progress.Report(e * .1);
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// Create a progress object for the update check
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var innerProgress = new Progress<double>();
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innerProgress.ProgressChanged += innerProgressHandler;
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var updateInfo = await _appHost.CheckForApplicationUpdate(cancellationToken, innerProgress).ConfigureAwait(false);
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// Release the event handler
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innerProgress.ProgressChanged -= innerProgressHandler;
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progress.Report(10);
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if (!updateInfo.IsUpdateAvailable)
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{
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progress.Report(100);
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return;
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}
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cancellationToken.ThrowIfCancellationRequested();
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if (Kernel.Configuration.EnableAutoUpdate)
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{
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Logger.Info("Update Revision {0} available. Updating...", updateInfo.AvailableVersion);
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innerProgressHandler = (sender, e) => progress.Report((e * .9) + .1);
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innerProgress = new Progress<double>();
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innerProgress.ProgressChanged += innerProgressHandler;
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await _appHost.UpdateApplication(cancellationToken, innerProgress).ConfigureAwait(false);
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// Release the event handler
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innerProgress.ProgressChanged -= innerProgressHandler;
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Kernel.OnApplicationUpdated(updateInfo.AvailableVersion);
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}
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else
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{
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Logger.Info("A new version of Media Browser is available.");
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}
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progress.Report(100);
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}
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/// <summary>
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/// Gets the name of the task
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/// </summary>
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/// <value>The name.</value>
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public override string Name
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{
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get { return "Check for application updates"; }
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}
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/// <summary>
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/// Gets the description.
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/// </summary>
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/// <value>The description.</value>
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public override string Description
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{
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get { return "Downloads and installs application updates."; }
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}
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}
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}
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