public void InitProviders()
{
lock (_syncObj)
{
if (_listProviders != null)
{
return;
}
_listProviders = new MediaListProviderDictionary();
_listProviders.ProviderRequested += OnProviderRequested;
_providerPluginItemStateTracker = new FixedItemStateTracker("Media Lists - Provider registration");
IPluginManager pluginManager = ServiceRegistration.Get <IPluginManager>();
foreach (PluginItemMetadata itemMetadata in pluginManager.GetAllPluginItemMetadata(MediaListProviderBuilder.MEDIA_LIST_PROVIDER_PATH))
{
try
{
MediaListProviderRegistration providerRegistration = pluginManager.RequestPluginItem <MediaListProviderRegistration>(MediaListProviderBuilder.MEDIA_LIST_PROVIDER_PATH, itemMetadata.Id, _providerPluginItemStateTracker);
if (providerRegistration == null)
{
ServiceRegistration.Get <ILogger>().Warn("Could not instantiate Media List provider with id '{0}'", itemMetadata.Id);
}
else
{
IMediaListProvider provider = Activator.CreateInstance(providerRegistration.ProviderClass) as IMediaListProvider;
if (provider == null)
{
throw new PluginInvalidStateException("Could not create IMediaListProvider instance of class {0}", providerRegistration.ProviderClass);
}
if (_listProviders.ContainsKey(providerRegistration.Key))
{
//The default providers cannot replace existing providers
if (provider.GetType().Assembly != System.Reflection.Assembly.GetExecutingAssembly())
{
//Replace the provider
_listProviders[providerRegistration.Key] = provider;
ServiceRegistration.Get <ILogger>().Info("Successfully replaced Media List '{1}' with provider '{0}' (Id '{2}')", itemMetadata.Attributes["ClassName"], itemMetadata.Attributes["Key"], itemMetadata.Id);
}
}
else
{
_listProviders.Add(providerRegistration.Key, provider);
ServiceRegistration.Get <ILogger>().Info("Successfully activated Media List '{1}' with provider '{0}' (Id '{2}')", itemMetadata.Attributes["ClassName"], itemMetadata.Attributes["Key"], itemMetadata.Id);
}
}
}
catch (PluginInvalidStateException e)
{
ServiceRegistration.Get <ILogger>().Warn("Cannot add IMediaListProvider extension with id '{0}'", e, itemMetadata.Id);
}
}
}
}
public async Task <bool> UpdateProviderAsync(IMediaListProvider provider, int maxItems, UpdateReason updateReason)
{
try
{
return(await provider.UpdateItemsAsync(maxItems, updateReason));
}
catch (Exception ex)
{
ServiceRegistration.Get <ILogger>().Error("Error updating Media List {0}", provider.GetType().Name, ex);
return(false);
}
}
protected virtual void OnProviderRequested(IMediaListProvider provider)
{
ProviderRequested?.Invoke(this, new ProviderEventArgs(provider));
}
public ProviderWrapper(IMediaListProvider provider)
{
_provider = provider;
_nextUpdateTime = DateTime.MinValue;
}
public ProviderEventArgs(IMediaListProvider provider)
{
_provider = provider;
}
public void Add(string key, IMediaListProvider value)
{
lock (_syncObj)
_providers.Add(key, new ProviderWrapper(value));
}
