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using System;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Plugins;
using MediaBrowser.Common.Updates;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Plugins;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Updates;
namespace Emby.Server.Implementations.EntryPoints
{
/// <summary>
/// Class WebSocketEvents.
/// </summary>
public class ServerEventNotifier : IServerEntryPoint
{
/// <summary>
/// The installation manager.
/// </summary>
private readonly IInstallationManager _installationManager;
/// <summary>
/// The kernel.
/// </summary>
private readonly IServerApplicationHost _appHost;
/// <summary>
/// The task manager.
/// </summary>
private readonly ITaskManager _taskManager;
private readonly ISessionManager _sessionManager;
/// <summary>
/// Initializes a new instance of the <see cref="ServerEventNotifier"/> class.
/// </summary>
/// <param name="appHost">The application host.</param>
/// <param name="installationManager">The installation manager.</param>
/// <param name="taskManager">The task manager.</param>
/// <param name="sessionManager">The session manager.</param>
public ServerEventNotifier(
IServerApplicationHost appHost,
IInstallationManager installationManager,
ITaskManager taskManager,
ISessionManager sessionManager)
{
_installationManager = installationManager;
_appHost = appHost;
_taskManager = taskManager;
_sessionManager = sessionManager;
}
/// <inheritdoc />
public Task RunAsync()
{
_appHost.HasPendingRestartChanged += OnHasPendingRestartChanged;
_installationManager.PluginUninstalled += OnPluginUninstalled;
_installationManager.PackageInstalling += OnPackageInstalling;
_installationManager.PackageInstallationCancelled += OnPackageInstallationCancelled;
_installationManager.PackageInstallationCompleted += OnPackageInstallationCompleted;
_installationManager.PackageInstallationFailed += OnPackageInstallationFailed;
_taskManager.TaskCompleted += OnTaskCompleted;
return Task.CompletedTask;
}
private async void OnPackageInstalling(object sender, InstallationInfo e)
{
await SendMessageToAdminSessions("PackageInstalling", e).ConfigureAwait(false);
}
private async void OnPackageInstallationCancelled(object sender, InstallationInfo e)
{
await SendMessageToAdminSessions("PackageInstallationCancelled", e).ConfigureAwait(false);
}
private async void OnPackageInstallationCompleted(object sender, InstallationInfo e)
{
await SendMessageToAdminSessions("PackageInstallationCompleted", e).ConfigureAwait(false);
}
private async void OnPackageInstallationFailed(object sender, InstallationFailedEventArgs e)
{
await SendMessageToAdminSessions("PackageInstallationFailed", e.InstallationInfo).ConfigureAwait(false);
}
private async void OnTaskCompleted(object sender, TaskCompletionEventArgs e)
{
await SendMessageToAdminSessions("ScheduledTaskEnded", e.Result).ConfigureAwait(false);
}
/// <summary>
/// Installations the manager_ plugin uninstalled.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The e.</param>
private async void OnPluginUninstalled(object sender, IPlugin e)
{
await SendMessageToAdminSessions("PluginUninstalled", e).ConfigureAwait(false);
}
/// <summary>
/// Handles the HasPendingRestartChanged event of the kernel control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
private async void OnHasPendingRestartChanged(object sender, EventArgs e)
{
await _sessionManager.SendRestartRequiredNotification(CancellationToken.None).ConfigureAwait(false);
}
private async Task SendMessageToAdminSessions<T>(string name, T data)
{
try
{
await _sessionManager.SendMessageToAdminSessions(name, data, CancellationToken.None).ConfigureAwait(false);
}
catch (Exception)
{
}
}
/// <inheritdoc />
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
/// <summary>
/// Releases unmanaged and - optionally - managed resources.
/// </summary>
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool dispose)
{
if (dispose)
{
_installationManager.PluginUninstalled -= OnPluginUninstalled;
_installationManager.PackageInstalling -= OnPackageInstalling;
_installationManager.PackageInstallationCancelled -= OnPackageInstallationCancelled;
_installationManager.PackageInstallationCompleted -= OnPackageInstallationCompleted;
_installationManager.PackageInstallationFailed -= OnPackageInstallationFailed;
_appHost.HasPendingRestartChanged -= OnHasPendingRestartChanged;
_taskManager.TaskCompleted -= OnTaskCompleted;
}
}
}
}
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