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using System;
using System.Threading.Tasks;
using Jellyfin.Data.Enums;
using Jellyfin.Data.Events;
using MediaBrowser.Controller.Authentication;
using MediaBrowser.Controller.Net;
using MediaBrowser.Model.Activity;
using MediaBrowser.Model.Session;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Api.WebSocketListeners;
/// <summary>
/// Class ActivityLogWebSocketListener.
/// </summary>
public class ActivityLogWebSocketListener : BasePeriodicWebSocketListener<ActivityLogEntry[], WebSocketListenerState>
{
/// <summary>
/// The _kernel.
/// </summary>
private readonly IActivityManager _activityManager;
private bool _disposed;
/// <summary>
/// Initializes a new instance of the <see cref="ActivityLogWebSocketListener"/> class.
/// </summary>
/// <param name="logger">Instance of the <see cref="ILogger{ActivityLogWebSocketListener}"/> interface.</param>
/// <param name="activityManager">Instance of the <see cref="IActivityManager"/> interface.</param>
public ActivityLogWebSocketListener(ILogger<ActivityLogWebSocketListener> logger, IActivityManager activityManager)
: base(logger)
{
_activityManager = activityManager;
_activityManager.EntryCreated += OnEntryCreated;
}
/// <inheritdoc />
protected override SessionMessageType Type => SessionMessageType.ActivityLogEntry;
/// <inheritdoc />
protected override SessionMessageType StartType => SessionMessageType.ActivityLogEntryStart;
/// <inheritdoc />
protected override SessionMessageType StopType => SessionMessageType.ActivityLogEntryStop;
/// <summary>
/// Gets the data to send.
/// </summary>
/// <returns>Task{SystemInfo}.</returns>
protected override Task<ActivityLogEntry[]> GetDataToSend()
{
return Task.FromResult(Array.Empty<ActivityLogEntry>());
}
/// <inheritdoc />
protected override async ValueTask DisposeAsyncCore()
{
if (!_disposed)
{
_activityManager.EntryCreated -= OnEntryCreated;
_disposed = true;
}
await base.DisposeAsyncCore().ConfigureAwait(false);
}
/// <summary>
/// Starts sending messages over an activity log web socket.
/// </summary>
/// <param name="message">The message.</param>
protected override void Start(WebSocketMessageInfo message)
{
if (!message.Connection.AuthorizationInfo.IsApiKey
&& (message.Connection.AuthorizationInfo.User is null
|| !message.Connection.AuthorizationInfo.User.HasPermission(PermissionKind.IsAdministrator)))
{
throw new AuthenticationException("Only admin users can retrieve the activity log.");
}
base.Start(message);
}
private void OnEntryCreated(object? sender, GenericEventArgs<ActivityLogEntry> e)
{
SendData(true);
}
}
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