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extracted provider manager. took more off the kernel

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This commit is contained in:
LukePulverenti
2013-03-08 00:08:27 -05:00
parent 211d24e66e
commit 9911df11e8
54 changed files with 756 additions and 636 deletions
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137
MediaBrowser.Controller/Providers/BaseMetadataProvider.cs
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@@ -1,5 +1,4 @@
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Model.Logging;
@@ -12,7 +11,7 @@ namespace MediaBrowser.Controller.Providers
/// <summary>
/// Class BaseMetadataProvider
/// </summary>
public abstract class BaseMetadataProvider : IDisposable
public abstract class BaseMetadataProvider
{
/// <summary>
/// Gets the logger.
@@ -27,16 +26,6 @@ namespace MediaBrowser.Controller.Providers
/// <value>The configuration manager.</value>
protected IServerConfigurationManager ConfigurationManager { get; private set; }
// Cache these since they will be used a lot
/// <summary>
/// The false task result
/// </summary>
protected static readonly Task<bool> FalseTaskResult = Task.FromResult(false);
/// <summary>
/// The true task result
/// </summary>
protected static readonly Task<bool> TrueTaskResult = Task.FromResult(true);
/// <summary>
/// The _id
/// </summary>
@@ -135,7 +124,7 @@ namespace MediaBrowser.Controller.Providers
/// <param name="providerVersion">The provider version.</param>
/// <param name="status">The status.</param>
/// <exception cref="System.ArgumentNullException">item</exception>
protected virtual void SetLastRefreshed(BaseItem item, DateTime value, string providerVersion, ProviderRefreshStatus status = ProviderRefreshStatus.Success)
public virtual void SetLastRefreshed(BaseItem item, DateTime value, string providerVersion, ProviderRefreshStatus status = ProviderRefreshStatus.Success)
{
if (item == null)
{
@@ -162,7 +151,7 @@ namespace MediaBrowser.Controller.Providers
/// <param name="item">The item.</param>
/// <param name="value">The value.</param>
/// <param name="status">The status.</param>
protected virtual void SetLastRefreshed(BaseItem item, DateTime value, ProviderRefreshStatus status = ProviderRefreshStatus.Success)
public void SetLastRefreshed(BaseItem item, DateTime value, ProviderRefreshStatus status = ProviderRefreshStatus.Success)
{
SetLastRefreshed(item, value, ProviderVersion, status);
}
@@ -254,76 +243,7 @@ namespace MediaBrowser.Controller.Providers
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public async Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
{
if (item == null)
{
throw new ArgumentNullException();
}
cancellationToken.ThrowIfCancellationRequested();
Logger.Info("Running for {0}", item.Path ?? item.Name ?? "--Unknown--");
// This provides the ability to cancel just this one provider
var innerCancellationTokenSource = new CancellationTokenSource();
Kernel.Instance.ProviderManager.OnProviderRefreshBeginning(this, item, innerCancellationTokenSource);
try
{
var task = FetchAsyncInternal(item, force, CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, innerCancellationTokenSource.Token).Token);
await task.ConfigureAwait(false);
if (task.IsFaulted)
{
// Log the AggregateException
if (task.Exception != null)
{
Logger.ErrorException("AggregateException:", task.Exception);
}
return false;
}
return task.Result;
}
catch (OperationCanceledException ex)
{
Logger.Info("{0} cancelled for {1}", GetType().Name, item.Name);
// If the outer cancellation token is the one that caused the cancellation, throw it
if (cancellationToken.IsCancellationRequested && ex.CancellationToken == cancellationToken)
{
throw;
}
return false;
}
catch (Exception ex)
{
Logger.ErrorException("failed refreshing {0}", ex, item.Name);
SetLastRefreshed(item, DateTime.UtcNow, ProviderRefreshStatus.Failure);
return true;
}
finally
{
innerCancellationTokenSource.Dispose();
Kernel.Instance.ProviderManager.OnProviderRefreshCompleted(this, item);
}
}
/// <summary>
/// Fetches metadata and returns true or false indicating if any work that requires persistence was done
/// </summary>
/// <param name="item">The item.</param>
/// <param name="force">if set to <c>true</c> [force].</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
protected abstract Task<bool> FetchAsyncInternal(BaseItem item, bool force, CancellationToken cancellationToken);
public abstract Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken);
/// <summary>
/// Gets the priority.
@@ -331,23 +251,6 @@ namespace MediaBrowser.Controller.Providers
/// <value>The priority.</value>
public abstract MetadataProviderPriority Priority { get; }
/// <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)
{
}
/// <summary>
/// Returns true or false indicating if the provider should refresh when the contents of it's directory changes
/// </summary>
@@ -386,34 +289,4 @@ namespace MediaBrowser.Controller.Providers
return item.FileSystemStamp;
}
}
/// <summary>
/// Determines when a provider should execute, relative to others
/// </summary>
public enum MetadataProviderPriority
{
// Run this provider at the beginning
/// <summary>
/// The first
/// </summary>
First = 1,
// Run this provider after all first priority providers
/// <summary>
/// The second
/// </summary>
Second = 2,
// Run this provider after all second priority providers
/// <summary>
/// The third
/// </summary>
Third = 3,
// Run this provider last
/// <summary>
/// The last
/// </summary>
Last = 4
}
}