jellyfin/Emby.Server.Implementations/ScheduledTasks/SystemUpdateTask.cs

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using MediaBrowser.Common;
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Model.Logging;
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using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Model.Tasks;
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namespace Emby.Server.Implementations.ScheduledTasks
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{
/// <summary>
/// Plugin Update Task
/// </summary>
public class SystemUpdateTask : IScheduledTask
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{
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/// <summary>
/// The _app host
/// </summary>
private readonly IApplicationHost _appHost;
/// <summary>
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/// Gets or sets the configuration manager.
/// </summary>
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/// <value>The configuration manager.</value>
private IConfigurationManager ConfigurationManager { get; set; }
/// <summary>
/// Gets or sets the logger.
/// </summary>
/// <value>The logger.</value>
private ILogger Logger { get; set; }
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/// <summary>
/// Initializes a new instance of the <see cref="SystemUpdateTask" /> class.
/// </summary>
/// <param name="appHost">The app host.</param>
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/// <param name="configurationManager">The configuration manager.</param>
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/// <param name="logger">The logger.</param>
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public SystemUpdateTask(IApplicationHost appHost, IConfigurationManager configurationManager, ILogger logger)
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{
_appHost = appHost;
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ConfigurationManager = configurationManager;
Logger = logger;
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}
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/// <summary>
/// Creates the triggers that define when the task will run
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
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{
return new[] {
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// At startup
new TaskTriggerInfo {Type = TaskTriggerInfo.TriggerStartup},
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// Every so often
new TaskTriggerInfo { Type = TaskTriggerInfo.TriggerInterval, IntervalTicks = TimeSpan.FromHours(24).Ticks}
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};
}
/// <summary>
/// Returns the task to be executed
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
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{
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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
innerProgress.ProgressChanged -= innerProgressHandler;
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progress.Report(10);
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if (!updateInfo.IsUpdateAvailable)
{
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Logger.Debug("No application update available.");
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progress.Report(100);
return;
}
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cancellationToken.ThrowIfCancellationRequested();
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if (!_appHost.CanSelfUpdate) return;
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if (ConfigurationManager.CommonConfiguration.EnableAutoUpdate)
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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;
await _appHost.UpdateApplication(updateInfo.Package, cancellationToken, innerProgress).ConfigureAwait(false);
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// Release the event handler
innerProgress.ProgressChanged -= innerProgressHandler;
}
else
{
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Logger.Info("A new version of " + _appHost.Name + " is available.");
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}
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progress.Report(100);
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}
/// <summary>
/// Gets the name of the task
/// </summary>
/// <value>The name.</value>
public string Name
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{
get { return "Check for application updates"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public string Description
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{
get { return "Downloads and installs application updates."; }
}
/// <summary>
/// Gets the category.
/// </summary>
/// <value>The category.</value>
public string Category
{
get { return "Application"; }
}
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public string Key
{
get { return "SystemUpdateTask"; }
}
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}
}