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LukePulverenti
2013-02-24 16:53:54 -05:00
parent 6c86721f6d
commit 8ce3e74e81
93 changed files with 2458 additions and 1584 deletions
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322
MediaBrowser.Common.Implementations/ScheduledTasks/TaskManager.cs Normal file
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using MediaBrowser.Common.Kernel;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Tasks;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
namespace MediaBrowser.Common.Implementations.ScheduledTasks
{
/// <summary>
/// Class TaskManager
/// </summary>
public class TaskManager : ITaskManager
{
/// <summary>
/// Gets the list of Scheduled Tasks
/// </summary>
/// <value>The scheduled tasks.</value>
public IScheduledTask[] ScheduledTasks { get; private set; }
/// <summary>
/// The _task queue
/// </summary>
private readonly List<Type> _taskQueue = new List<Type>();
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// The _application paths
/// </summary>
private readonly IApplicationPaths _applicationPaths;
/// <summary>
/// The _json serializer
/// </summary>
private readonly IJsonSerializer _jsonSerializer;
/// <summary>
/// Initializes a new instance of the <see cref="TaskManager" /> class.
/// </summary>
/// <param name="applicationPaths">The application paths.</param>
/// <param name="jsonSerializer">The json serializer.</param>
/// <param name="logger">The logger.</param>
/// <exception cref="System.ArgumentException">kernel</exception>
public TaskManager(IApplicationPaths applicationPaths, IJsonSerializer jsonSerializer, ILogger logger)
{
if (applicationPaths == null)
{
throw new ArgumentException("applicationPaths");
}
if (jsonSerializer == null)
{
throw new ArgumentException("jsonSerializer");
}
if (logger == null)
{
throw new ArgumentException("logger");
}
_applicationPaths = applicationPaths;
_jsonSerializer = jsonSerializer;
_logger = logger;
ScheduledTasks = new IScheduledTask[] {};
}
/// <summary>
/// Cancels if running and queue.
/// </summary>
/// <typeparam name="T"></typeparam>
public void CancelIfRunningAndQueue<T>()
where T : IScheduledTask
{
ScheduledTasks.OfType<T>().First().CancelIfRunning();
QueueScheduledTask<T>();
}
/// <summary>
/// Queues the scheduled task.
/// </summary>
/// <typeparam name="T"></typeparam>
public void QueueScheduledTask<T>()
where T : IScheduledTask
{
var scheduledTask = ScheduledTasks.OfType<T>().First();
QueueScheduledTask(scheduledTask);
}
/// <summary>
/// Queues the scheduled task.
/// </summary>
/// <param name="task">The task.</param>
public void QueueScheduledTask(IScheduledTask task)
{
var type = task.GetType();
var scheduledTask = ScheduledTasks.First(t => t.GetType() == type);
lock (_taskQueue)
{
// If it's idle just execute immediately
if (scheduledTask.State == TaskState.Idle)
{
scheduledTask.Execute();
return;
}
if (!_taskQueue.Contains(type))
{
_logger.Info("Queueing task {0}", type.Name);
_taskQueue.Add(type);
}
else
{
_logger.Info("Task already queued: {0}", type.Name);
}
}
}
/// <summary>
/// Called when [task completed].
/// </summary>
/// <param name="task">The task.</param>
public void OnTaskCompleted(IScheduledTask task)
{
// Execute queued tasks
lock (_taskQueue)
{
var copy = _taskQueue.ToList();
foreach (var type in copy)
{
var scheduledTask = ScheduledTasks.First(t => t.GetType() == type);
if (scheduledTask.State == TaskState.Idle)
{
scheduledTask.Execute();
_taskQueue.Remove(type);
}
}
}
}
/// <summary>
/// Adds the tasks.
/// </summary>
/// <param name="tasks">The tasks.</param>
public void AddTasks(IEnumerable<IScheduledTask> tasks)
{
var myTasks = ScheduledTasks.ToList();
myTasks.AddRange(tasks);
ScheduledTasks = myTasks.ToArray();
}
/// <summary>
/// The _scheduled tasks configuration directory
/// </summary>
private string _scheduledTasksConfigurationDirectory;
/// <summary>
/// Gets the scheduled tasks configuration directory.
/// </summary>
/// <value>The scheduled tasks configuration directory.</value>
private string ScheduledTasksConfigurationDirectory
{
get
{
if (_scheduledTasksConfigurationDirectory == null)
{
_scheduledTasksConfigurationDirectory = Path.Combine(_applicationPaths.ConfigurationDirectoryPath, "ScheduledTasks");
if (!Directory.Exists(_scheduledTasksConfigurationDirectory))
{
Directory.CreateDirectory(_scheduledTasksConfigurationDirectory);
}
}
return _scheduledTasksConfigurationDirectory;
}
}
/// <summary>
/// The _scheduled tasks data directory
/// </summary>
private string _scheduledTasksDataDirectory;
/// <summary>
/// Gets the scheduled tasks data directory.
/// </summary>
/// <value>The scheduled tasks data directory.</value>
private string ScheduledTasksDataDirectory
{
get
{
if (_scheduledTasksDataDirectory == null)
{
_scheduledTasksDataDirectory = Path.Combine(_applicationPaths.DataPath, "ScheduledTasks");
if (!Directory.Exists(_scheduledTasksDataDirectory))
{
Directory.CreateDirectory(_scheduledTasksDataDirectory);
}
}
return _scheduledTasksDataDirectory;
}
}
/// <summary>
/// Gets the history file path.
/// </summary>
/// <value>The history file path.</value>
private string GetHistoryFilePath(IScheduledTask task)
{
return Path.Combine(ScheduledTasksDataDirectory, task.Id + ".js");
}
/// <summary>
/// Gets the configuration file path.
/// </summary>
/// <param name="task">The task.</param>
/// <returns>System.String.</returns>
private string GetConfigurationFilePath(IScheduledTask task)
{
return Path.Combine(ScheduledTasksConfigurationDirectory, task.Id + ".js");
}
/// <summary>
/// Called when [task completed].
/// </summary>
/// <param name="task">The task.</param>
/// <param name="startTime">The start time.</param>
/// <param name="endTime">The end time.</param>
/// <param name="status">The status.</param>
public void OnTaskCompleted(IScheduledTask task, DateTime startTime, DateTime endTime, TaskCompletionStatus status)
{
var elapsedTime = endTime - startTime;
_logger.Info("{0} {1} after {2} minute(s) and {3} seconds", task.Name, status, Math.Truncate(elapsedTime.TotalMinutes), elapsedTime.Seconds);
var result = new TaskResult
{
StartTimeUtc = startTime,
EndTimeUtc = endTime,
Status = status,
Name = task.Name,
Id = task.Id
};
_jsonSerializer.SerializeToFile(result, GetHistoryFilePath(task));
//task.LastExecutionResult = result;
}
/// <summary>
/// Gets the last execution result.
/// </summary>
/// <param name="task">The task.</param>
/// <returns>TaskResult.</returns>
public TaskResult GetLastExecutionResult(IScheduledTask task)
{
return _jsonSerializer.DeserializeFromFile<TaskResult>(GetHistoryFilePath(task));
}
/// <summary>
/// Loads the triggers.
/// </summary>
/// <param name="task">The task.</param>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public IEnumerable<ITaskTrigger> LoadTriggers(IScheduledTask task)
{
try
{
return _jsonSerializer.DeserializeFromFile<IEnumerable<TaskTriggerInfo>>(GetConfigurationFilePath(task))
.Select(ScheduledTaskHelpers.GetTrigger)
.ToList();
}
catch (IOException)
{
// File doesn't exist. No biggie. Return defaults.
return task.GetDefaultTriggers();
}
}
/// <summary>
/// Saves the triggers.
/// </summary>
/// <param name="task">The task.</param>
/// <param name="triggers">The triggers.</param>
public void SaveTriggers(IScheduledTask task, IEnumerable<ITaskTrigger> triggers)
{
_jsonSerializer.SerializeToFile(triggers.Select(ScheduledTaskHelpers.GetTriggerInfo), GetConfigurationFilePath(task));
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool dispose)
{
foreach (var task in ScheduledTasks)
{
task.Dispose();
}
}
}
}

119
MediaBrowser.Common.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs Normal file
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using MediaBrowser.Common.Kernel;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Common.Implementations.ScheduledTasks.Tasks
{
/// <summary>
/// Deletes old cache files
/// </summary>
public class DeleteCacheFileTask : BaseScheduledTask<IKernel>
{
/// <summary>
/// Initializes a new instance of the <see cref="DeleteCacheFileTask" /> class.
/// </summary>
/// <param name="kernel">The kernel.</param>
/// <param name="taskManager">The task manager.</param>
/// <param name="logger">The logger.</param>
public DeleteCacheFileTask(IKernel kernel, ITaskManager taskManager, ILogger logger)
: base(kernel, taskManager, logger)
{
}
/// <summary>
/// Creates the triggers that define when the task will run
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public override IEnumerable<ITaskTrigger> GetDefaultTriggers()
{
var trigger = new DailyTrigger { TimeOfDay = TimeSpan.FromHours(2) }; //2am
return new[] { trigger };
}
/// <summary>
/// Returns the task to be executed
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
protected override Task ExecuteInternal(CancellationToken cancellationToken, IProgress<double> progress)
{
return Task.Run(() =>
{
var minDateModified = DateTime.UtcNow.AddMonths(-2);
DeleteCacheFilesFromDirectory(cancellationToken, Kernel.ApplicationPaths.CachePath, minDateModified, progress);
});
}
/// <summary>
/// Deletes the cache files from directory with a last write time less than a given date
/// </summary>
/// <param name="cancellationToken">The task cancellation token.</param>
/// <param name="directory">The directory.</param>
/// <param name="minDateModified">The min date modified.</param>
/// <param name="progress">The progress.</param>
private void DeleteCacheFilesFromDirectory(CancellationToken cancellationToken, string directory, DateTime minDateModified, IProgress<double> progress)
{
var filesToDelete = new DirectoryInfo(directory).EnumerateFileSystemInfos("*", SearchOption.AllDirectories)
.Where(f => !f.Attributes.HasFlag(FileAttributes.Directory) && f.LastWriteTimeUtc < minDateModified)
.ToList();
var index = 0;
foreach (var file in filesToDelete)
{
double percent = index;
percent /= filesToDelete.Count;
progress.Report(100 * percent);
cancellationToken.ThrowIfCancellationRequested();
File.Delete(file.FullName);
index++;
}
progress.Report(100);
}
/// <summary>
/// Gets the name of the task
/// </summary>
/// <value>The name.</value>
public override string Name
{
get { return "Cache file cleanup"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public override string Description
{
get { return "Deletes cache files no longer needed by the system"; }
}
/// <summary>
/// Gets the category.
/// </summary>
/// <value>The category.</value>
public override string Category
{
get
{
return "Maintenance";
}
}
}
}

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MediaBrowser.Common.Implementations/ScheduledTasks/Tasks/DeleteLogFileTask.cs Normal file
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using MediaBrowser.Common.Kernel;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Common.Implementations.ScheduledTasks.Tasks
{
/// <summary>
/// Deletes old log files
/// </summary>
public class DeleteLogFileTask : BaseScheduledTask<IKernel>
{
/// <summary>
/// Initializes a new instance of the <see cref="DeleteLogFileTask" /> class.
/// </summary>
/// <param name="kernel">The kernel.</param>
/// <param name="taskManager">The task manager.</param>
/// <param name="logger">The logger.</param>
public DeleteLogFileTask(IKernel kernel, ITaskManager taskManager, ILogger logger)
: base(kernel, taskManager, logger)
{
}
/// <summary>
/// Creates the triggers that define when the task will run
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public override IEnumerable<ITaskTrigger> GetDefaultTriggers()
{
var trigger = new DailyTrigger { TimeOfDay = TimeSpan.FromHours(2) }; //2am
return new[] { trigger };
}
/// <summary>
/// Returns the task to be executed
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
protected override Task ExecuteInternal(CancellationToken cancellationToken, IProgress<double> progress)
{
return Task.Run(() =>
{
// Delete log files more than n days old
var minDateModified = DateTime.UtcNow.AddDays(-(Kernel.Configuration.LogFileRetentionDays));
var filesToDelete = new DirectoryInfo(Kernel.ApplicationPaths.LogDirectoryPath).EnumerateFileSystemInfos("*", SearchOption.AllDirectories)
.Where(f => f.LastWriteTimeUtc < minDateModified)
.ToList();
var index = 0;
foreach (var file in filesToDelete)
{
double percent = index;
percent /= filesToDelete.Count;
progress.Report(100 * percent);
cancellationToken.ThrowIfCancellationRequested();
File.Delete(file.FullName);
index++;
}
progress.Report(100);
});
}
/// <summary>
/// Gets the name of the task
/// </summary>
/// <value>The name.</value>
public override string Name
{
get { return "Log file cleanup"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public override string Description
{
get { return string.Format("Deletes log files that are more than {0} days old.", Kernel.Configuration.LogFileRetentionDays); }
}
/// <summary>
/// Gets the category.
/// </summary>
/// <value>The category.</value>
public override string Category
{
get
{
return "Maintenance";
}
}
}
}

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MediaBrowser.Common.Implementations/ScheduledTasks/Tasks/ReloadLoggerTask.cs Normal file
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using MediaBrowser.Common.Kernel;
using MediaBrowser.Common.ScheduledTasks;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Common.Implementations.ScheduledTasks.Tasks
{
/// <summary>
/// Class ReloadLoggerFileTask
/// </summary>
public class ReloadLoggerFileTask : BaseScheduledTask<IKernel>
{
/// <summary>
/// Initializes a new instance of the <see cref="ReloadLoggerFileTask" /> class.
/// </summary>
/// <param name="kernel">The kernel.</param>
/// <param name="taskManager">The task manager.</param>
/// <param name="logger">The logger.</param>
public ReloadLoggerFileTask(IKernel kernel, ITaskManager taskManager, ILogger logger)
: base(kernel, taskManager, logger)
{
}
/// <summary>
/// Gets the default triggers.
/// </summary>
/// <returns>IEnumerable{BaseTaskTrigger}.</returns>
public override IEnumerable<ITaskTrigger> GetDefaultTriggers()
{
var trigger = new DailyTrigger { TimeOfDay = TimeSpan.FromHours(0) }; //12am
return new[] { trigger };
}
/// <summary>
/// Executes the internal.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
protected override Task ExecuteInternal(CancellationToken cancellationToken, IProgress<double> progress)
{
cancellationToken.ThrowIfCancellationRequested();
progress.Report(0);
return Task.Run(() => Kernel.ReloadLogger());
}
/// <summary>
/// Gets the name.
/// </summary>
/// <value>The name.</value>
public override string Name
{
get { return "Start new log file"; }
}
/// <summary>
/// Gets the description.
/// </summary>
/// <value>The description.</value>
public override string Description
{
get { return "Moves logging to a new file to help reduce log file sizes."; }
}
}
}

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