mirror of
https://github.com/jellyfin/jellyfin.git
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228 lines
8.6 KiB
C#
228 lines
8.6 KiB
C#
using System.Net;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using System;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Model.Serialization;
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namespace MediaBrowser.Controller.Providers.Music
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{
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class LastfmProviderException : ApplicationException
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{
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public LastfmProviderException(string msg)
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: base(msg)
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{
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}
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}
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/// <summary>
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/// Class MovieDbProvider
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/// </summary>
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public abstract class LastfmBaseProvider : BaseMetadataProvider
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{
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protected static readonly SemaphoreSlim LastfmResourcePool = new SemaphoreSlim(5, 5);
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/// <summary>
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/// Initializes a new instance of the <see cref="LastfmBaseProvider" /> class.
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/// </summary>
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/// <param name="jsonSerializer">The json serializer.</param>
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/// <param name="httpClient">The HTTP client.</param>
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/// <param name="logManager">The log manager.</param>
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/// <param name="configurationManager">The configuration manager.</param>
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/// <exception cref="System.ArgumentNullException">jsonSerializer</exception>
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protected LastfmBaseProvider(IJsonSerializer jsonSerializer, IHttpClient httpClient, ILogManager logManager, IServerConfigurationManager configurationManager)
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: base(logManager, configurationManager)
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{
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if (jsonSerializer == null)
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{
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throw new ArgumentNullException("jsonSerializer");
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}
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if (httpClient == null)
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{
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throw new ArgumentNullException("httpClient");
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}
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JsonSerializer = jsonSerializer;
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HttpClient = httpClient;
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}
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/// <summary>
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/// Gets the json serializer.
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/// </summary>
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/// <value>The json serializer.</value>
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protected IJsonSerializer JsonSerializer { get; private set; }
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/// <summary>
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/// Gets the HTTP client.
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/// </summary>
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/// <value>The HTTP client.</value>
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protected IHttpClient HttpClient { get; private set; }
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/// <summary>
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/// The name of the local json meta file for this item type
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/// </summary>
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protected string LocalMetaFileName { get; set; }
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/// <summary>
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/// Gets the priority.
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/// </summary>
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/// <value>The priority.</value>
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public override MetadataProviderPriority Priority
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{
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get { return MetadataProviderPriority.Second; }
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}
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/// <summary>
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/// Gets a value indicating whether [requires internet].
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/// </summary>
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/// <value><c>true</c> if [requires internet]; otherwise, <c>false</c>.</value>
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public override bool RequiresInternet
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{
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get
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{
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return true;
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}
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}
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/// <summary>
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/// If we save locally, refresh if they delete something
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/// </summary>
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protected override bool RefreshOnFileSystemStampChange
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{
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get
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{
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return ConfigurationManager.Configuration.SaveLocalMeta;
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}
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}
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protected const string RootUrl = @"http://ws.audioscrobbler.com/2.0/?";
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protected static string ApiKey = "7b76553c3eb1d341d642755aecc40a33";
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protected override bool NeedsRefreshInternal(BaseItem item, BaseProviderInfo providerInfo)
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{
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if (item.DontFetchMeta) return false;
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if (ConfigurationManager.Configuration.SaveLocalMeta && HasFileSystemStampChanged(item, providerInfo))
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{
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//If they deleted something from file system, chances are, this item was mis-identified the first time
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item.SetProviderId(MetadataProviders.Musicbrainz, null);
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Logger.Debug("LastfmProvider reports file system stamp change...");
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return true;
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}
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if (providerInfo.LastRefreshStatus == ProviderRefreshStatus.CompletedWithErrors)
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{
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Logger.Debug("LastfmProvider for {0} - last attempt had errors. Will try again.", item.Path);
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return true;
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}
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var downloadDate = providerInfo.LastRefreshed;
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if (ConfigurationManager.Configuration.MetadataRefreshDays == -1 && downloadDate != DateTime.MinValue)
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{
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return false;
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}
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if (DateTime.Today.Subtract(item.DateCreated).TotalDays > 180 && downloadDate != DateTime.MinValue)
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return false; // don't trigger a refresh data for item that are more than 6 months old and have been refreshed before
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if (DateTime.Today.Subtract(downloadDate).TotalDays < ConfigurationManager.Configuration.MetadataRefreshDays) // only refresh every n days
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return false;
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Logger.Debug("LastfmProvider - " + item.Name + " needs refresh. Download date: " + downloadDate + " item created date: " + item.DateCreated + " Check for Update age: " + ConfigurationManager.Configuration.MetadataRefreshDays);
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return true;
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}
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/// <summary>
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/// Fetches metadata and returns true or false indicating if any work that requires persistence was done
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="force">if set to <c>true</c> [force].</param>
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/// <param name="cancellationToken">The cancellation token</param>
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/// <returns>Task{System.Boolean}.</returns>
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protected override async Task<bool> FetchAsyncInternal(BaseItem item, bool force, CancellationToken cancellationToken)
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{
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if (item.DontFetchMeta)
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{
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Logger.Info("LastfmProvider - Not fetching because requested to ignore " + item.Name);
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return false;
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}
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cancellationToken.ThrowIfCancellationRequested();
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if (!ConfigurationManager.Configuration.SaveLocalMeta || !HasLocalMeta(item) || (force && !HasLocalMeta(item)))
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{
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try
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{
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await FetchData(item, cancellationToken).ConfigureAwait(false);
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SetLastRefreshed(item, DateTime.UtcNow);
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}
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catch (LastfmProviderException)
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{
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SetLastRefreshed(item, DateTime.UtcNow, ProviderRefreshStatus.CompletedWithErrors);
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}
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return true;
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}
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Logger.Debug("LastfmProvider not fetching because local meta exists for " + item.Name);
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SetLastRefreshed(item, DateTime.UtcNow);
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return true;
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}
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/// <summary>
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/// Determines whether [has local meta] [the specified item].
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/// </summary>
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/// <param name="item">The item.</param>
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/// <returns><c>true</c> if [has local meta] [the specified item]; otherwise, <c>false</c>.</returns>
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private bool HasLocalMeta(BaseItem item)
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{
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return item.ResolveArgs.ContainsMetaFileByName(LocalMetaFileName);
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}
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/// <summary>
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/// Fetches the items data.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken"></param>
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/// <returns>Task.</returns>
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protected async Task FetchData(BaseItem item, CancellationToken cancellationToken)
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{
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var id = item.GetProviderId(MetadataProviders.Musicbrainz) ?? await FindId(item, cancellationToken).ConfigureAwait(false);
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if (id != null)
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{
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Logger.Debug("LastfmProvider - getting info with id: " + id);
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cancellationToken.ThrowIfCancellationRequested();
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item.SetProviderId(MetadataProviders.Musicbrainz, id);
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await FetchLastfmData(item, id, cancellationToken).ConfigureAwait(false);
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}
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else
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{
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Logger.Info("LastfmProvider could not find " + item.Name + ". Check name on Last.fm.");
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}
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}
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protected abstract Task<string> FindId(BaseItem item, CancellationToken cancellationToken);
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protected abstract Task FetchLastfmData(BaseItem item, string id, CancellationToken cancellationToken);
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/// <summary>
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/// Encodes an URL.
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/// </summary>
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/// <param name="name">The name.</param>
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/// <returns>System.String.</returns>
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protected static string UrlEncode(string name)
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{
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return WebUtility.UrlEncode(name);
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}
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}
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}
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