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Remove circular dependency between websocket listeners and manager

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pull/3194/head
cvium 4 years ago
parent 3ae39d44da
commit 65e6211c03
7 changed files with 67 additions and 87 deletions
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41
Emby.Server.Implementations/HttpServer/WebSocketManager.cs
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@ -2,9 +2,9 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.WebSockets;
using System.Threading.Tasks;
using Jellyfin.Data.Events;
using MediaBrowser.Controller.Net;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
@ -13,32 +13,23 @@ namespace Emby.Server.Implementations.HttpServer
{
public class WebSocketManager : IWebSocketManager
{
private readonly Lazy<IEnumerable<IWebSocketListener>> _webSocketListeners;
private readonly IWebSocketListener[] _webSocketListeners;
private readonly ILogger<WebSocketManager> _logger;
private readonly ILoggerFactory _loggerFactory;
private bool _disposed = false;
public WebSocketManager(
Lazy<IEnumerable<IWebSocketListener>> webSocketListeners,
IEnumerable<IWebSocketListener> webSocketListeners,
ILogger<WebSocketManager> logger,
ILoggerFactory loggerFactory)
{
_webSocketListeners = webSocketListeners;
_webSocketListeners = webSocketListeners.ToArray();
_logger = logger;
_loggerFactory = loggerFactory;
}
public event EventHandler<GenericEventArgs<IWebSocketConnection>> WebSocketConnected;
/// <inheritdoc />
public async Task WebSocketRequestHandler(HttpContext context)
{
if (_disposed)
{
return;
}
try
{
_logger.LogInformation("WS {IP} request", context.Connection.RemoteIpAddress);
@ -54,7 +45,13 @@ namespace Emby.Server.Implementations.HttpServer
OnReceive = ProcessWebSocketMessageReceived
};
WebSocketConnected?.Invoke(this, new GenericEventArgs<IWebSocketConnection>(connection));
var tasks = new Task[_webSocketListeners.Length];
for (var i = 0; i < _webSocketListeners.Length; ++i)
{
tasks[i] = _webSocketListeners[i].ProcessWebSocketConnectedAsync(connection);
}
await Task.WhenAll(tasks).ConfigureAwait(false);
await connection.ProcessAsync().ConfigureAwait(false);
_logger.LogInformation("WS {IP} closed", context.Connection.RemoteIpAddress);
@ -75,21 +72,13 @@ namespace Emby.Server.Implementations.HttpServer
/// <param name="result">The result.</param>
private Task ProcessWebSocketMessageReceived(WebSocketMessageInfo result)
{
if (_disposed)
{
return Task.CompletedTask;
}
IEnumerable<Task> GetTasks()
var tasks = new Task[_webSocketListeners.Length];
for (var i = 0; i < _webSocketListeners.Length; ++i)
{
var listeners = _webSocketListeners.Value;
foreach (var x in listeners)
{
yield return x.ProcessMessageAsync(result);
}
tasks[i] = _webSocketListeners[i].ProcessMessageAsync(result);
}
return Task.WhenAll(GetTasks());
return Task.WhenAll(tasks);
}
}
}

80
Emby.Server.Implementations/Session/SessionWebSocketListener.cs
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@ -4,7 +4,6 @@ using System.Linq;
using System.Net.WebSockets;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Events;
using MediaBrowser.Controller.Net;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Net;
@ -22,50 +21,48 @@ namespace Emby.Server.Implementations.Session
/// <summary>
/// The timeout in seconds after which a WebSocket is considered to be lost.
/// </summary>
public const int WebSocketLostTimeout = 60;
private const int WebSocketLostTimeout = 60;
/// <summary>
/// The keep-alive interval factor; controls how often the watcher will check on the status of the WebSockets.
/// </summary>
public const float IntervalFactor = 0.2f;
private const float IntervalFactor = 0.2f;
/// <summary>
/// The ForceKeepAlive factor; controls when a ForceKeepAlive is sent.
/// </summary>
public const float ForceKeepAliveFactor = 0.75f;
private const float ForceKeepAliveFactor = 0.75f;
/// <summary>
/// The _session manager.
/// Lock used for accesing the KeepAlive cancellation token.
/// </summary>
private readonly ISessionManager _sessionManager;
private readonly object _keepAliveLock = new object();
/// <summary>
/// The _logger.
/// The WebSocket watchlist.
/// </summary>
private readonly ILogger<SessionWebSocketListener> _logger;
private readonly ILoggerFactory _loggerFactory;
private readonly IWebSocketManager _webSocketManager;
private readonly HashSet<IWebSocketConnection> _webSockets = new HashSet<IWebSocketConnection>();
/// <summary>
/// The KeepAlive cancellation token.
/// Lock used for accessing the WebSockets watchlist.
/// </summary>
private CancellationTokenSource _keepAliveCancellationToken;
private readonly object _webSocketsLock = new object();
/// <summary>
/// Lock used for accesing the KeepAlive cancellation token.
/// The _session manager.
/// </summary>
private readonly object _keepAliveLock = new object();
private readonly ISessionManager _sessionManager;
/// <summary>
/// The WebSocket watchlist.
/// The _logger.
/// </summary>
private readonly HashSet<IWebSocketConnection> _webSockets = new HashSet<IWebSocketConnection>();
private readonly ILogger<SessionWebSocketListener> _logger;
private readonly ILoggerFactory _loggerFactory;
/// <summary>
/// Lock used for accesing the WebSockets watchlist.
/// The KeepAlive cancellation token.
/// </summary>
private readonly object _webSocketsLock = new object();
private CancellationTokenSource _keepAliveCancellationToken;
/// <summary>
/// Initializes a new instance of the <see cref="SessionWebSocketListener" /> class.
@ -73,32 +70,42 @@ namespace Emby.Server.Implementations.Session
/// <param name="logger">The logger.</param>
/// <param name="sessionManager">The session manager.</param>
/// <param name="loggerFactory">The logger factory.</param>
/// <param name="webSocketManager">The HTTP server.</param>
public SessionWebSocketListener(
ILogger<SessionWebSocketListener> logger,
ISessionManager sessionManager,
ILoggerFactory loggerFactory,
IWebSocketManager webSocketManager)
ILoggerFactory loggerFactory)
{
_logger = logger;
_sessionManager = sessionManager;
_loggerFactory = loggerFactory;
_webSocketManager = webSocketManager;
}
webSocketManager.WebSocketConnected += OnServerManagerWebSocketConnected;
/// <inheritdoc />
public void Dispose()
{
StopKeepAlive();
}
private async void OnServerManagerWebSocketConnected(object sender, GenericEventArgs<IWebSocketConnection> e)
/// <summary>
/// Processes the message.
/// </summary>
/// <param name="message">The message.</param>
/// <returns>Task.</returns>
public Task ProcessMessageAsync(WebSocketMessageInfo message)
=> Task.CompletedTask;
/// <inheritdoc />
public async Task ProcessWebSocketConnectedAsync(IWebSocketConnection connection)
{
var session = GetSession(e.Argument.QueryString, e.Argument.RemoteEndPoint.ToString());
var session = GetSession(connection.QueryString, connection.RemoteEndPoint.ToString());
if (session != null)
{
EnsureController(session, e.Argument);
await KeepAliveWebSocket(e.Argument).ConfigureAwait(false);
EnsureController(session, connection);
await KeepAliveWebSocket(connection).ConfigureAwait(false);
}
else
{
_logger.LogWarning("Unable to determine session based on query string: {0}", e.Argument.QueryString);
_logger.LogWarning("Unable to determine session based on query string: {0}", connection.QueryString);
}
}
@ -119,21 +126,6 @@ namespace Emby.Server.Implementations.Session
return _sessionManager.GetSessionByAuthenticationToken(token, deviceId, remoteEndpoint);
}
/// <inheritdoc />
public void Dispose()
{
_webSocketManager.WebSocketConnected -= OnServerManagerWebSocketConnected;
StopKeepAlive();
}
/// <summary>
/// Processes the message.
/// </summary>
/// <param name="message">The message.</param>
/// <returns>Task.</returns>
public Task ProcessMessageAsync(WebSocketMessageInfo message)
=> Task.CompletedTask;
private void EnsureController(SessionInfo session, IWebSocketConnection connection)
{
var controllerInfo = session.EnsureController<WebSocketController>(

2
Jellyfin.Api/WebSocketListeners/ActivityLogWebSocketListener.cs
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@ -58,7 +58,7 @@ namespace Jellyfin.Api.WebSocketListeners
private void OnEntryCreated(object? sender, GenericEventArgs<ActivityLogEntry> e)
{
SendData(true);
SendData(true).GetAwaiter().GetResult();
}
}
}

12
Jellyfin.Server/CoreAppHost.cs
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@ -82,13 +82,11 @@ namespace Jellyfin.Server
ServiceCollection.AddSingleton<IUserManager, UserManager>();
ServiceCollection.AddSingleton<IDisplayPreferencesManager, DisplayPreferencesManager>();
ServiceCollection.AddScoped<IWebSocketListener, SessionWebSocketListener>();
ServiceCollection.AddScoped<IWebSocketListener, ActivityLogWebSocketListener>();
ServiceCollection.AddScoped<IWebSocketListener, ScheduledTasksWebSocketListener>();
ServiceCollection.AddScoped<IWebSocketListener, SessionInfoWebSocketListener>();
// TODO fix circular dependency on IWebSocketManager
ServiceCollection.AddScoped(serviceProvider => new Lazy<IEnumerable<IWebSocketListener>>(serviceProvider.GetRequiredService<IEnumerable<IWebSocketListener>>));
// TODO search the assemblies instead of adding them manually?
ServiceCollection.AddSingleton<IWebSocketListener, SessionWebSocketListener>();
ServiceCollection.AddSingleton<IWebSocketListener, ActivityLogWebSocketListener>();
ServiceCollection.AddSingleton<IWebSocketListener, ScheduledTasksWebSocketListener>();
ServiceCollection.AddSingleton<IWebSocketListener, SessionInfoWebSocketListener>();
base.RegisterServices();
}

2
MediaBrowser.Controller/Net/BasePeriodicWebSocketListener.cs
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@ -92,6 +92,8 @@ namespace MediaBrowser.Controller.Net
return Task.CompletedTask;
}
public Task ProcessWebSocketConnectedAsync(IWebSocketConnection connection) => Task.CompletedTask;
/// <summary>
/// Starts sending messages over a web socket.
/// </summary>

9
MediaBrowser.Controller/Net/IWebSocketListener.cs
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@ -3,7 +3,7 @@ using System.Threading.Tasks;
namespace MediaBrowser.Controller.Net
{
/// <summary>
///This is an interface for listening to messages coming through a web socket connection.
/// Interface for listening to messages coming through a web socket connection.
/// </summary>
public interface IWebSocketListener
{
@ -13,5 +13,12 @@ namespace MediaBrowser.Controller.Net
/// <param name="message">The message.</param>
/// <returns>Task.</returns>
Task ProcessMessageAsync(WebSocketMessageInfo message);
/// <summary>
/// Processes a new web socket connection.
/// </summary>
/// <param name="connection">An instance of the <see cref="IWebSocketConnection"/> interface.</param>
/// <returns>Task.</returns>
Task ProcessWebSocketConnectedAsync(IWebSocketConnection connection);
}
}

8
MediaBrowser.Controller/Net/IWebSocketManager.cs
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@ -1,7 +1,4 @@
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Jellyfin.Data.Events;
using Microsoft.AspNetCore.Http;
namespace MediaBrowser.Controller.Net
@ -11,11 +8,6 @@ namespace MediaBrowser.Controller.Net
/// </summary>
public interface IWebSocketManager
{
/// <summary>
/// Occurs when [web socket connected].
/// </summary>
event EventHandler<GenericEventArgs<IWebSocketConnection>> WebSocketConnected;
/// <summary>
/// The HTTP request handler.
/// </summary>

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