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using System;
using System.Linq;
using System.Threading;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Model.Configuration;
namespace MediaBrowser.Controller.BaseItemManager
{
/// <inheritdoc />
public class BaseItemManager : IBaseItemManager
{
private readonly IServerConfigurationManager _serverConfigurationManager;
private int _metadataRefreshConcurrency = 0;
/// <summary>
/// Initializes a new instance of the <see cref="BaseItemManager"/> class.
/// </summary>
/// <param name="serverConfigurationManager">Instance of the <see cref="IServerConfigurationManager"/> interface.</param>
public BaseItemManager(IServerConfigurationManager serverConfigurationManager)
{
_serverConfigurationManager = serverConfigurationManager;
_metadataRefreshConcurrency = GetMetadataRefreshConcurrency();
SetupMetadataThrottler();
_serverConfigurationManager.ConfigurationUpdated += OnConfigurationUpdated;
}
/// <inheritdoc />
public SemaphoreSlim MetadataRefreshThrottler { get; private set; }
/// <inheritdoc />
public bool IsMetadataFetcherEnabled(BaseItem baseItem, LibraryOptions libraryOptions, string name)
{
if (baseItem is Channel)
{
// Hack alert.
return true;
}
if (baseItem.SourceType == SourceType.Channel)
{
// Hack alert.
return !baseItem.EnableMediaSourceDisplay;
}
var typeOptions = libraryOptions.GetTypeOptions(baseItem.GetType().Name);
if (typeOptions != null)
{
return typeOptions.MetadataFetchers.Contains(name, StringComparer.OrdinalIgnoreCase);
}
if (!libraryOptions.EnableInternetProviders)
{
return false;
}
var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, GetType().Name, StringComparison.OrdinalIgnoreCase));
return itemConfig == null || !itemConfig.DisabledMetadataFetchers.Contains(name, StringComparer.OrdinalIgnoreCase);
}
/// <inheritdoc />
public bool IsImageFetcherEnabled(BaseItem baseItem, LibraryOptions libraryOptions, string name)
{
if (baseItem is Channel)
{
// Hack alert.
return true;
}
if (baseItem.SourceType == SourceType.Channel)
{
// Hack alert.
return !baseItem.EnableMediaSourceDisplay;
}
var typeOptions = libraryOptions.GetTypeOptions(baseItem.GetType().Name);
if (typeOptions != null)
{
return typeOptions.ImageFetchers.Contains(name, StringComparer.OrdinalIgnoreCase);
}
if (!libraryOptions.EnableInternetProviders)
{
return false;
}
var itemConfig = _serverConfigurationManager.Configuration.MetadataOptions.FirstOrDefault(i => string.Equals(i.ItemType, GetType().Name, StringComparison.OrdinalIgnoreCase));
return itemConfig == null || !itemConfig.DisabledImageFetchers.Contains(name, StringComparer.OrdinalIgnoreCase);
}
/// <summary>
/// Called when the configuration is updated.
/// It will refresh the metadata throttler if the relevant config changed.
/// </summary>
private void OnConfigurationUpdated(object sender, EventArgs e)
{
int newMetadataRefreshConcurrency = GetMetadataRefreshConcurrency();
if (_metadataRefreshConcurrency != newMetadataRefreshConcurrency)
{
_metadataRefreshConcurrency = newMetadataRefreshConcurrency;
SetupMetadataThrottler();
}
}
/// <summary>
/// Creates the metadata refresh throttler.
/// </summary>
private void SetupMetadataThrottler()
{
MetadataRefreshThrottler = new SemaphoreSlim(_metadataRefreshConcurrency);
}
/// <summary>
/// Returns the metadata refresh concurrency.
/// </summary>
private int GetMetadataRefreshConcurrency()
{
var concurrency = _serverConfigurationManager.Configuration.LibraryMetadataRefreshConcurrency;
if (concurrency <= 0)
{
concurrency = Environment.ProcessorCount;
}
return concurrency;
}
}
}
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