mirror of
https://github.com/jellyfin/jellyfin.git
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Add Argument*Exceptions now use proper nameof operators. Added exception messages to quite a few Argument*Exceptions. Fixed rethorwing to be proper syntax. Added a ton of null checkes. (This is only a start, there are about 500 places that need proper null handling) Added some TODOs to log certain exceptions. Fix sln again. Fixed all AssemblyInfo's and added proper copyright (where I could find them) We live in *current year*. Fixed the use of braces. Fixed a ton of properties, and made a fair amount of functions static that should be and can be static. Made more Methods that should be static static. You can now use static to find bad functions! Removed unused variable. And added one more proper XML comment.
247 lines
9 KiB
C#
247 lines
9 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.LiveTv;
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using Microsoft.Extensions.Logging;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Serialization;
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using MediaBrowser.Controller.Library;
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namespace Emby.Server.Implementations.LiveTv.TunerHosts
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{
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public abstract class BaseTunerHost
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{
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protected readonly IServerConfigurationManager Config;
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protected readonly ILogger Logger;
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protected IJsonSerializer JsonSerializer;
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protected readonly IMediaEncoder MediaEncoder;
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protected readonly IFileSystem FileSystem;
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private readonly ConcurrentDictionary<string, ChannelCache> _channelCache =
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new ConcurrentDictionary<string, ChannelCache>(StringComparer.OrdinalIgnoreCase);
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protected BaseTunerHost(IServerConfigurationManager config, ILogger logger, IJsonSerializer jsonSerializer, IMediaEncoder mediaEncoder, IFileSystem fileSystem)
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{
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Config = config;
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Logger = logger;
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JsonSerializer = jsonSerializer;
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MediaEncoder = mediaEncoder;
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FileSystem = fileSystem;
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}
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public virtual bool IsSupported => true;
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protected abstract Task<List<ChannelInfo>> GetChannelsInternal(TunerHostInfo tuner, CancellationToken cancellationToken);
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public abstract string Type { get; }
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public async Task<List<ChannelInfo>> GetChannels(TunerHostInfo tuner, bool enableCache, CancellationToken cancellationToken)
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{
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ChannelCache cache = null;
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var key = tuner.Id;
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if (enableCache && !string.IsNullOrEmpty(key) && _channelCache.TryGetValue(key, out cache))
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{
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return cache.Channels.ToList();
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}
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var result = await GetChannelsInternal(tuner, cancellationToken).ConfigureAwait(false);
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var list = result.ToList();
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//logger.LogInformation("Channels from {0}: {1}", tuner.Url, JsonSerializer.SerializeToString(list));
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if (!string.IsNullOrEmpty(key) && list.Count > 0)
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{
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cache = cache ?? new ChannelCache();
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cache.Channels = list;
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_channelCache.AddOrUpdate(key, cache, (k, v) => cache);
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}
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return list;
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}
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protected virtual List<TunerHostInfo> GetTunerHosts()
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{
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return GetConfiguration().TunerHosts
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.Where(i => string.Equals(i.Type, Type, StringComparison.OrdinalIgnoreCase))
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.ToList();
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}
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public async Task<List<ChannelInfo>> GetChannels(bool enableCache, CancellationToken cancellationToken)
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{
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var list = new List<ChannelInfo>();
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var hosts = GetTunerHosts();
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foreach (var host in hosts)
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{
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var channelCacheFile = Path.Combine(Config.ApplicationPaths.CachePath, host.Id + "_channels");
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try
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{
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var channels = await GetChannels(host, enableCache, cancellationToken).ConfigureAwait(false);
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var newChannels = channels.Where(i => !list.Any(l => string.Equals(i.Id, l.Id, StringComparison.OrdinalIgnoreCase))).ToList();
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list.AddRange(newChannels);
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if (!enableCache)
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{
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try
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{
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FileSystem.CreateDirectory(FileSystem.GetDirectoryName(channelCacheFile));
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JsonSerializer.SerializeToFile(channels, channelCacheFile);
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}
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catch (IOException)
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{
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}
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}
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error getting channel list");
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if (enableCache)
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{
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try
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{
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var channels = JsonSerializer.DeserializeFromFile<List<ChannelInfo>>(channelCacheFile);
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list.AddRange(channels);
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}
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catch (IOException)
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{
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}
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}
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}
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}
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return list;
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}
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protected abstract Task<List<MediaSourceInfo>> GetChannelStreamMediaSources(TunerHostInfo tuner, ChannelInfo channel, CancellationToken cancellationToken);
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public async Task<List<MediaSourceInfo>> GetChannelStreamMediaSources(string channelId, CancellationToken cancellationToken)
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{
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if (string.IsNullOrEmpty(channelId))
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{
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throw new ArgumentNullException(nameof(channelId));
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}
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if (IsValidChannelId(channelId))
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{
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var hosts = GetTunerHosts();
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foreach (var host in hosts)
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{
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try
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{
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var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
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var channelInfo = channels.FirstOrDefault(i => string.Equals(i.Id, channelId, StringComparison.OrdinalIgnoreCase));
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if (channelInfo != null)
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{
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return await GetChannelStreamMediaSources(host, channelInfo, cancellationToken).ConfigureAwait(false);
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}
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error getting channels");
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}
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}
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}
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return new List<MediaSourceInfo>();
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}
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protected abstract Task<ILiveStream> GetChannelStream(TunerHostInfo tuner, ChannelInfo channel, string streamId, List<ILiveStream> currentLiveStreams, CancellationToken cancellationToken);
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public async Task<ILiveStream> GetChannelStream(string channelId, string streamId, List<ILiveStream> currentLiveStreams, CancellationToken cancellationToken)
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{
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if (string.IsNullOrEmpty(channelId))
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{
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throw new ArgumentNullException(nameof(channelId));
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}
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if (!IsValidChannelId(channelId))
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{
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throw new FileNotFoundException();
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}
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var hosts = GetTunerHosts();
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var hostsWithChannel = new List<Tuple<TunerHostInfo, ChannelInfo>>();
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foreach (var host in hosts)
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{
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try
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{
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var channels = await GetChannels(host, true, cancellationToken).ConfigureAwait(false);
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var channelInfo = channels.FirstOrDefault(i => string.Equals(i.Id, channelId, StringComparison.OrdinalIgnoreCase));
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if (channelInfo != null)
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{
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hostsWithChannel.Add(new Tuple<TunerHostInfo, ChannelInfo>(host, channelInfo));
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}
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error getting channels");
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}
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}
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foreach (var hostTuple in hostsWithChannel)
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{
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var host = hostTuple.Item1;
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var channelInfo = hostTuple.Item2;
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try
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{
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var liveStream = await GetChannelStream(host, channelInfo, streamId, currentLiveStreams, cancellationToken).ConfigureAwait(false);
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var startTime = DateTime.UtcNow;
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await liveStream.Open(cancellationToken).ConfigureAwait(false);
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var endTime = DateTime.UtcNow;
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Logger.LogInformation("Live stream opened after {0}ms", (endTime - startTime).TotalMilliseconds);
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return liveStream;
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}
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catch (Exception ex)
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{
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Logger.LogError(ex, "Error opening tuner");
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}
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}
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throw new LiveTvConflictException();
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}
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protected virtual string ChannelIdPrefix => Type + "_";
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protected virtual bool IsValidChannelId(string channelId)
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{
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if (string.IsNullOrEmpty(channelId))
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{
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throw new ArgumentNullException(nameof(channelId));
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}
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return channelId.StartsWith(ChannelIdPrefix, StringComparison.OrdinalIgnoreCase);
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}
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protected LiveTvOptions GetConfiguration()
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{
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return Config.GetConfiguration<LiveTvOptions>("livetv");
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}
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private class ChannelCache
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{
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public List<ChannelInfo> Channels;
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}
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}
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}
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