jellyfin/MediaBrowser.Server.Implementations/Session/SessionManager.cs
2013-10-22 15:03:21 -04:00

618 lines
23 KiB
C#

using MediaBrowser.Common.Events;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Session;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Session
{
/// <summary>
/// Class SessionManager
/// </summary>
public class SessionManager : ISessionManager
{
/// <summary>
/// The _user data repository
/// </summary>
private readonly IUserDataManager _userDataRepository;
/// <summary>
/// The _user repository
/// </summary>
private readonly IUserRepository _userRepository;
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
private readonly ILibraryManager _libraryManager;
/// <summary>
/// Gets or sets the configuration manager.
/// </summary>
/// <value>The configuration manager.</value>
private readonly IServerConfigurationManager _configurationManager;
/// <summary>
/// The _active connections
/// </summary>
private readonly ConcurrentDictionary<string, SessionInfo> _activeConnections =
new ConcurrentDictionary<string, SessionInfo>(StringComparer.OrdinalIgnoreCase);
/// <summary>
/// Occurs when [playback start].
/// </summary>
public event EventHandler<PlaybackProgressEventArgs> PlaybackStart;
/// <summary>
/// Occurs when [playback progress].
/// </summary>
public event EventHandler<PlaybackProgressEventArgs> PlaybackProgress;
/// <summary>
/// Occurs when [playback stopped].
/// </summary>
public event EventHandler<PlaybackProgressEventArgs> PlaybackStopped;
/// <summary>
/// Initializes a new instance of the <see cref="SessionManager"/> class.
/// </summary>
/// <param name="userDataRepository">The user data repository.</param>
/// <param name="configurationManager">The configuration manager.</param>
/// <param name="logger">The logger.</param>
/// <param name="userRepository">The user repository.</param>
public SessionManager(IUserDataManager userDataRepository, IServerConfigurationManager configurationManager, ILogger logger, IUserRepository userRepository)
{
_userDataRepository = userDataRepository;
_configurationManager = configurationManager;
_logger = logger;
_userRepository = userRepository;
}
/// <summary>
/// Gets all connections.
/// </summary>
/// <value>All connections.</value>
public IEnumerable<SessionInfo> Sessions
{
get { return _activeConnections.Values.OrderByDescending(c => c.LastActivityDate).ToList(); }
}
/// <summary>
/// Logs the user activity.
/// </summary>
/// <param name="clientType">Type of the client.</param>
/// <param name="appVersion">The app version.</param>
/// <param name="deviceId">The device id.</param>
/// <param name="deviceName">Name of the device.</param>
/// <param name="user">The user.</param>
/// <returns>Task.</returns>
/// <exception cref="System.UnauthorizedAccessException"></exception>
/// <exception cref="System.ArgumentNullException">user</exception>
public async Task<SessionInfo> LogSessionActivity(string clientType, string appVersion, string deviceId, string deviceName, User user)
{
if (string.IsNullOrEmpty(clientType))
{
throw new ArgumentNullException("clientType");
}
if (string.IsNullOrEmpty(appVersion))
{
throw new ArgumentNullException("appVersion");
}
if (string.IsNullOrEmpty(deviceId))
{
throw new ArgumentNullException("deviceId");
}
if (string.IsNullOrEmpty(deviceName))
{
throw new ArgumentNullException("deviceName");
}
if (user != null && user.Configuration.IsDisabled)
{
throw new UnauthorizedAccessException(string.Format("The {0} account is currently disabled. Please consult with your administrator.", user.Name));
}
var activityDate = DateTime.UtcNow;
var session = GetSessionInfo(clientType, appVersion, deviceId, deviceName, user);
session.LastActivityDate = activityDate;
if (user == null)
{
return session;
}
var lastActivityDate = user.LastActivityDate;
user.LastActivityDate = activityDate;
// Don't log in the db anymore frequently than 10 seconds
if (lastActivityDate.HasValue && (activityDate - lastActivityDate.Value).TotalSeconds < 10)
{
return session;
}
// Save this directly. No need to fire off all the events for this.
await _userRepository.SaveUser(user, CancellationToken.None).ConfigureAwait(false);
return session;
}
/// <summary>
/// Updates the now playing item id.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="item">The item.</param>
/// <param name="isPaused">if set to <c>true</c> [is paused].</param>
/// <param name="currentPositionTicks">The current position ticks.</param>
private void UpdateNowPlayingItem(SessionInfo session, BaseItem item, bool isPaused, bool isMuted, long? currentPositionTicks = null)
{
session.IsMuted = isMuted;
session.IsPaused = isPaused;
session.NowPlayingPositionTicks = currentPositionTicks;
session.NowPlayingItem = item;
session.LastActivityDate = DateTime.UtcNow;
}
/// <summary>
/// Removes the now playing item id.
/// </summary>
/// <param name="session">The session.</param>
/// <param name="item">The item.</param>
private void RemoveNowPlayingItem(SessionInfo session, BaseItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
if (session.NowPlayingItem != null && session.NowPlayingItem.Id == item.Id)
{
session.NowPlayingItem = null;
session.NowPlayingPositionTicks = null;
session.IsPaused = false;
}
}
/// <summary>
/// Gets the connection.
/// </summary>
/// <param name="clientType">Type of the client.</param>
/// <param name="appVersion">The app version.</param>
/// <param name="deviceId">The device id.</param>
/// <param name="deviceName">Name of the device.</param>
/// <param name="user">The user.</param>
/// <returns>SessionInfo.</returns>
private SessionInfo GetSessionInfo(string clientType, string appVersion, string deviceId, string deviceName, User user)
{
var key = clientType + deviceId + appVersion;
var connection = _activeConnections.GetOrAdd(key, keyName => new SessionInfo
{
Client = clientType,
DeviceId = deviceId,
ApplicationVersion = appVersion,
Id = Guid.NewGuid()
});
connection.DeviceName = deviceName;
connection.User = user;
return connection;
}
/// <summary>
/// Used to report that playback has started for an item
/// </summary>
/// <param name="info">The info.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">info</exception>
public async Task OnPlaybackStart(PlaybackInfo info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (info.SessionId == Guid.Empty)
{
throw new ArgumentNullException("info");
}
var session = Sessions.First(i => i.Id.Equals(info.SessionId));
var item = info.Item;
UpdateNowPlayingItem(session, item, false, false);
session.CanSeek = info.CanSeek;
session.QueueableMediaTypes = info.QueueableMediaTypes;
var key = item.GetUserDataKey();
var user = session.User;
var data = _userDataRepository.GetUserData(user.Id, key);
data.PlayCount++;
data.LastPlayedDate = DateTime.UtcNow;
if (!(item is Video))
{
data.Played = true;
}
await _userDataRepository.SaveUserData(user.Id, key, data, UserDataSaveReason.PlaybackStart, CancellationToken.None).ConfigureAwait(false);
// Nothing to save here
// Fire events to inform plugins
EventHelper.QueueEventIfNotNull(PlaybackStart, this, new PlaybackProgressEventArgs
{
Item = item,
User = user
}, _logger);
}
/// <summary>
/// Used to report playback progress for an item
/// </summary>
/// <param name="info">The info.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
/// <exception cref="System.ArgumentOutOfRangeException">positionTicks</exception>
public async Task OnPlaybackProgress(PlaybackProgressInfo info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (info.PositionTicks.HasValue && info.PositionTicks.Value < 0)
{
throw new ArgumentOutOfRangeException("positionTicks");
}
var session = Sessions.First(i => i.Id.Equals(info.SessionId));
UpdateNowPlayingItem(session, info.Item, info.IsPaused, info.IsMuted, info.PositionTicks);
var key = info.Item.GetUserDataKey();
var user = session.User;
if (info.PositionTicks.HasValue)
{
var data = _userDataRepository.GetUserData(user.Id, key);
UpdatePlayState(info.Item, data, info.PositionTicks.Value);
await _userDataRepository.SaveUserData(user.Id, key, data, UserDataSaveReason.PlaybackProgress, CancellationToken.None).ConfigureAwait(false);
}
EventHelper.QueueEventIfNotNull(PlaybackProgress, this, new PlaybackProgressEventArgs
{
Item = info.Item,
User = user,
PlaybackPositionTicks = info.PositionTicks
}, _logger);
}
/// <summary>
/// Used to report that playback has ended for an item
/// </summary>
/// <param name="info">The info.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">info</exception>
/// <exception cref="System.ArgumentOutOfRangeException">positionTicks</exception>
public async Task OnPlaybackStopped(PlaybackStopInfo info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (info.Item == null)
{
throw new ArgumentException("PlaybackStopInfo.Item cannot be null");
}
if (info.SessionId == Guid.Empty)
{
throw new ArgumentException("PlaybackStopInfo.SessionId cannot be Guid.Empty");
}
if (info.PositionTicks.HasValue && info.PositionTicks.Value < 0)
{
throw new ArgumentOutOfRangeException("positionTicks");
}
var session = Sessions.First(i => i.Id.Equals(info.SessionId));
RemoveNowPlayingItem(session, info.Item);
var key = info.Item.GetUserDataKey();
var user = session.User;
var data = _userDataRepository.GetUserData(user.Id, key);
if (info.PositionTicks.HasValue)
{
UpdatePlayState(info.Item, data, info.PositionTicks.Value);
}
else
{
// If the client isn't able to report this, then we'll just have to make an assumption
data.PlayCount++;
data.Played = true;
data.PlaybackPositionTicks = 0;
}
await _userDataRepository.SaveUserData(user.Id, key, data, UserDataSaveReason.PlaybackFinished, CancellationToken.None).ConfigureAwait(false);
EventHelper.QueueEventIfNotNull(PlaybackStopped, this, new PlaybackProgressEventArgs
{
Item = info.Item,
User = user,
PlaybackPositionTicks = info.PositionTicks
}, _logger);
}
/// <summary>
/// Updates playstate position for an item but does not save
/// </summary>
/// <param name="item">The item</param>
/// <param name="data">User data for the item</param>
/// <param name="positionTicks">The current playback position</param>
private void UpdatePlayState(BaseItem item, UserItemData data, long positionTicks)
{
var hasRuntime = item.RunTimeTicks.HasValue && item.RunTimeTicks > 0;
// If a position has been reported, and if we know the duration
if (positionTicks > 0 && hasRuntime)
{
var pctIn = Decimal.Divide(positionTicks, item.RunTimeTicks.Value) * 100;
// Don't track in very beginning
if (pctIn < _configurationManager.Configuration.MinResumePct)
{
positionTicks = 0;
}
// If we're at the end, assume completed
else if (pctIn > _configurationManager.Configuration.MaxResumePct || positionTicks >= item.RunTimeTicks.Value)
{
positionTicks = 0;
data.Played = true;
}
else
{
// Enforce MinResumeDuration
var durationSeconds = TimeSpan.FromTicks(item.RunTimeTicks.Value).TotalSeconds;
if (durationSeconds < _configurationManager.Configuration.MinResumeDurationSeconds)
{
positionTicks = 0;
data.Played = true;
}
}
}
else if (!hasRuntime)
{
// If we don't know the runtime we'll just have to assume it was fully played
data.Played = true;
positionTicks = 0;
}
if (item is Audio)
{
positionTicks = 0;
}
data.PlaybackPositionTicks = positionTicks;
}
/// <summary>
/// Gets the session for remote control.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <returns>SessionInfo.</returns>
/// <exception cref="ResourceNotFoundException"></exception>
private SessionInfo GetSessionForRemoteControl(Guid sessionId)
{
var session = Sessions.First(i => i.Id.Equals(sessionId));
if (session == null)
{
throw new ResourceNotFoundException(string.Format("Session {0} not found.", sessionId));
}
if (!session.SupportsRemoteControl)
{
throw new ArgumentException(string.Format("Session {0} does not support remote control.", session.Id));
}
return session;
}
/// <summary>
/// Sends the system command.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <param name="command">The command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendSystemCommand(Guid sessionId, SystemCommand command, CancellationToken cancellationToken)
{
var session = GetSessionForRemoteControl(sessionId);
return session.SessionController.SendSystemCommand(command, cancellationToken);
}
/// <summary>
/// Sends the message command.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <param name="command">The command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendMessageCommand(Guid sessionId, MessageCommand command, CancellationToken cancellationToken)
{
var session = GetSessionForRemoteControl(sessionId);
return session.SessionController.SendMessageCommand(command, cancellationToken);
}
/// <summary>
/// Sends the play command.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <param name="command">The command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendPlayCommand(Guid sessionId, PlayRequest command, CancellationToken cancellationToken)
{
var session = GetSessionForRemoteControl(sessionId);
var items = command.ItemIds.Select(i => _libraryManager.GetItemById(new Guid(i)))
.ToList();
if (items.Any(i => i.LocationType == LocationType.Virtual))
{
throw new ArgumentException("Virtual items are not playable.");
}
if (command.PlayCommand != PlayCommand.PlayNow)
{
if (items.Any(i => !session.QueueableMediaTypes.Contains(i.MediaType, StringComparer.OrdinalIgnoreCase)))
{
throw new ArgumentException(string.Format("Session {0} is unable to queue the requested media type.", session.Id));
}
}
return session.SessionController.SendPlayCommand(command, cancellationToken);
}
/// <summary>
/// Sends the browse command.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <param name="command">The command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendBrowseCommand(Guid sessionId, BrowseRequest command, CancellationToken cancellationToken)
{
var session = GetSessionForRemoteControl(sessionId);
return session.SessionController.SendBrowseCommand(command, cancellationToken);
}
/// <summary>
/// Sends the playstate command.
/// </summary>
/// <param name="sessionId">The session id.</param>
/// <param name="command">The command.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendPlaystateCommand(Guid sessionId, PlaystateRequest command, CancellationToken cancellationToken)
{
var session = GetSessionForRemoteControl(sessionId);
if (command.Command == PlaystateCommand.Seek && !session.CanSeek)
{
throw new ArgumentException(string.Format("Session {0} is unable to seek.", session.Id));
}
return session.SessionController.SendPlaystateCommand(command, cancellationToken);
}
/// <summary>
/// Sends the restart required message.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendRestartRequiredNotification(CancellationToken cancellationToken)
{
var sessions = Sessions.Where(i => i.IsActive && i.SessionController != null).ToList();
var tasks = sessions.Select(session => Task.Run(async () =>
{
try
{
await session.SessionController.SendRestartRequiredNotification(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error in SendRestartRequiredNotification.", ex);
}
}));
return Task.WhenAll(tasks);
}
/// <summary>
/// Sends the server shutdown notification.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendServerShutdownNotification(CancellationToken cancellationToken)
{
var sessions = Sessions.Where(i => i.IsActive && i.SessionController != null).ToList();
var tasks = sessions.Select(session => Task.Run(async () =>
{
try
{
await session.SessionController.SendServerShutdownNotification(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error in SendServerShutdownNotification.", ex);
}
}));
return Task.WhenAll(tasks);
}
/// <summary>
/// Sends the server restart notification.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public Task SendServerRestartNotification(CancellationToken cancellationToken)
{
var sessions = Sessions.Where(i => i.IsActive && i.SessionController != null).ToList();
var tasks = sessions.Select(session => Task.Run(async () =>
{
try
{
await session.SessionController.SendServerRestartNotification(cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.ErrorException("Error in SendServerRestartNotification.", ex);
}
}));
return Task.WhenAll(tasks);
}
}
}