You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
jellyfin/Emby.Common.Implementations/BaseApplicationHost.cs

901 lines
31 KiB

using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Events;
using Emby.Common.Implementations.Devices;
using Emby.Common.Implementations.IO;
using Emby.Common.Implementations.ScheduledTasks;
using Emby.Common.Implementations.Serialization;
using Emby.Common.Implementations.Updates;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Plugins;
using MediaBrowser.Common.Progress;
using MediaBrowser.Common.Security;
using MediaBrowser.Common.Updates;
using MediaBrowser.Model.Events;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Updates;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Extensions;
using Emby.Common.Implementations.Cryptography;
using Emby.Common.Implementations.Diagnostics;
using Emby.Common.Implementations.Net;
using Emby.Common.Implementations.EnvironmentInfo;
using Emby.Common.Implementations.Threading;
using MediaBrowser.Common;
using MediaBrowser.Common.IO;
using MediaBrowser.Model.Cryptography;
using MediaBrowser.Model.Diagnostics;
using MediaBrowser.Model.Net;
using MediaBrowser.Model.System;
using MediaBrowser.Model.Tasks;
using MediaBrowser.Model.Threading;
#if NETSTANDARD1_6
using System.Runtime.Loader;
#endif
namespace Emby.Common.Implementations
{
/// <summary>
/// Class BaseApplicationHost
/// </summary>
/// <typeparam name="TApplicationPathsType">The type of the T application paths type.</typeparam>
public abstract class BaseApplicationHost<TApplicationPathsType> : IApplicationHost
where TApplicationPathsType : class, IApplicationPaths
{
/// <summary>
/// Occurs when [has pending restart changed].
/// </summary>
public event EventHandler HasPendingRestartChanged;
/// <summary>
/// Occurs when [application updated].
/// </summary>
public event EventHandler<GenericEventArgs<PackageVersionInfo>> ApplicationUpdated;
/// <summary>
/// Gets or sets a value indicating whether this instance has changes that require the entire application to restart.
/// </summary>
/// <value><c>true</c> if this instance has pending application restart; otherwise, <c>false</c>.</value>
public bool HasPendingRestart { get; private set; }
/// <summary>
/// Gets or sets the logger.
/// </summary>
/// <value>The logger.</value>
protected ILogger Logger { get; private set; }
/// <summary>
/// Gets or sets the plugins.
/// </summary>
/// <value>The plugins.</value>
public IPlugin[] Plugins { get; protected set; }
/// <summary>
/// Gets or sets the log manager.
/// </summary>
/// <value>The log manager.</value>
public ILogManager LogManager { get; protected set; }
/// <summary>
/// Gets the application paths.
/// </summary>
/// <value>The application paths.</value>
protected TApplicationPathsType ApplicationPaths { get; private set; }
/// <summary>
/// The json serializer
/// </summary>
public IJsonSerializer JsonSerializer { get; private set; }
/// <summary>
/// The _XML serializer
/// </summary>
protected readonly IXmlSerializer XmlSerializer;
/// <summary>
/// Gets assemblies that failed to load
/// </summary>
/// <value>The failed assemblies.</value>
public List<string> FailedAssemblies { get; protected set; }
/// <summary>
/// Gets all concrete types.
/// </summary>
/// <value>All concrete types.</value>
public Type[] AllConcreteTypes { get; protected set; }
/// <summary>
/// The disposable parts
/// </summary>
protected readonly List<IDisposable> DisposableParts = new List<IDisposable>();
/// <summary>
/// Gets a value indicating whether this instance is first run.
/// </summary>
/// <value><c>true</c> if this instance is first run; otherwise, <c>false</c>.</value>
public bool IsFirstRun { get; private set; }
/// <summary>
/// Gets the kernel.
/// </summary>
/// <value>The kernel.</value>
protected ITaskManager TaskManager { get; private set; }
/// <summary>
/// Gets the HTTP client.
/// </summary>
/// <value>The HTTP client.</value>
public IHttpClient HttpClient { get; private set; }
/// <summary>
/// Gets the network manager.
/// </summary>
/// <value>The network manager.</value>
protected INetworkManager NetworkManager { get; private set; }
/// <summary>
/// Gets the configuration manager.
/// </summary>
/// <value>The configuration manager.</value>
protected IConfigurationManager ConfigurationManager { get; private set; }
protected IFileSystem FileSystemManager { get; private set; }
protected IIsoManager IsoManager { get; private set; }
protected IProcessFactory ProcessFactory { get; private set; }
protected ITimerFactory TimerFactory { get; private set; }
protected ISocketFactory SocketFactory { get; private set; }
/// <summary>
/// Gets the name.
/// </summary>
/// <value>The name.</value>
public abstract string Name { get; }
/// <summary>
/// Gets a value indicating whether this instance is running as service.
/// </summary>
/// <value><c>true</c> if this instance is running as service; otherwise, <c>false</c>.</value>
public abstract bool IsRunningAsService { get; }
protected ICryptoProvider CryptographyProvider = new CryptographyProvider();
protected IEnvironmentInfo EnvironmentInfo { get; private set; }
private DeviceId _deviceId;
public string SystemId
{
get
{
if (_deviceId == null)
{
_deviceId = new DeviceId(ApplicationPaths, LogManager.GetLogger("SystemId"), FileSystemManager);
}
return _deviceId.Value;
}
}
public virtual string OperatingSystemDisplayName
{
get { return EnvironmentInfo.OperatingSystemName; }
}
/// <summary>
/// The container
/// </summary>
protected readonly SimpleInjector.Container Container = new SimpleInjector.Container();
protected ISystemEvents SystemEvents { get; private set; }
protected IMemoryStreamFactory MemoryStreamFactory { get; private set; }
/// <summary>
/// Initializes a new instance of the <see cref="BaseApplicationHost{TApplicationPathsType}"/> class.
/// </summary>
protected BaseApplicationHost(TApplicationPathsType applicationPaths,
ILogManager logManager,
IFileSystem fileSystem,
IEnvironmentInfo environmentInfo,
ISystemEvents systemEvents,
IMemoryStreamFactory memoryStreamFactory,
INetworkManager networkManager)
{
NetworkManager = networkManager;
EnvironmentInfo = environmentInfo;
SystemEvents = systemEvents;
MemoryStreamFactory = memoryStreamFactory;
// hack alert, until common can target .net core
BaseExtensions.CryptographyProvider = CryptographyProvider;
XmlSerializer = new MyXmlSerializer(fileSystem, logManager.GetLogger("XmlSerializer"));
FailedAssemblies = new List<string>();
ApplicationPaths = applicationPaths;
LogManager = logManager;
FileSystemManager = fileSystem;
ConfigurationManager = GetConfigurationManager();
// Initialize this early in case the -v command line option is used
Logger = LogManager.GetLogger("App");
}
/// <summary>
/// Inits this instance.
/// </summary>
/// <returns>Task.</returns>
public virtual async Task Init(IProgress<double> progress)
{
progress.Report(1);
JsonSerializer = CreateJsonSerializer();
OnLoggerLoaded(true);
LogManager.LoggerLoaded += (s, e) => OnLoggerLoaded(false);
IsFirstRun = !ConfigurationManager.CommonConfiguration.IsStartupWizardCompleted;
progress.Report(2);
LogManager.LogSeverity = ConfigurationManager.CommonConfiguration.EnableDebugLevelLogging
? LogSeverity.Debug
: LogSeverity.Info;
progress.Report(3);
DiscoverTypes();
progress.Report(14);
SetHttpLimit();
progress.Report(15);
var innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(p => progress.Report(.8 * p + 15));
await RegisterResources(innerProgress).ConfigureAwait(false);
FindParts();
progress.Report(95);
await InstallIsoMounters(CancellationToken.None).ConfigureAwait(false);
progress.Report(100);
}
protected virtual void OnLoggerLoaded(bool isFirstLoad)
{
Logger.Info("Application version: {0}", ApplicationVersion);
if (!isFirstLoad)
{
LogEnvironmentInfo(Logger, ApplicationPaths, false);
}
// Put the app config in the log for troubleshooting purposes
Logger.LogMultiline("Application configuration:", LogSeverity.Info, new StringBuilder(JsonSerializer.SerializeToString(ConfigurationManager.CommonConfiguration)));
if (Plugins != null)
{
var pluginBuilder = new StringBuilder();
foreach (var plugin in Plugins)
{
pluginBuilder.AppendLine(string.Format("{0} {1}", plugin.Name, plugin.Version));
}
Logger.LogMultiline("Plugins:", LogSeverity.Info, pluginBuilder);
}
}
public static void LogEnvironmentInfo(ILogger logger, IApplicationPaths appPaths, bool isStartup)
{
logger.LogMultiline("Emby", LogSeverity.Info, GetBaseExceptionMessage(appPaths));
}
protected static StringBuilder GetBaseExceptionMessage(IApplicationPaths appPaths)
{
var builder = new StringBuilder();
builder.AppendLine(string.Format("Command line: {0}", string.Join(" ", Environment.GetCommandLineArgs())));
#if NET46
builder.AppendLine(string.Format("Operating system: {0}", Environment.OSVersion));
builder.AppendLine(string.Format("64-Bit OS: {0}", Environment.Is64BitOperatingSystem));
builder.AppendLine(string.Format("64-Bit Process: {0}", Environment.Is64BitProcess));
Type type = Type.GetType("Mono.Runtime");
if (type != null)
{
MethodInfo displayName = type.GetMethod("GetDisplayName", BindingFlags.NonPublic | BindingFlags.Static);
if (displayName != null)
{
builder.AppendLine("Mono: " + displayName.Invoke(null, null));
}
}
#endif
builder.AppendLine(string.Format("Processor count: {0}", Environment.ProcessorCount));
builder.AppendLine(string.Format("Program data path: {0}", appPaths.ProgramDataPath));
builder.AppendLine(string.Format("Application Path: {0}", appPaths.ApplicationPath));
return builder;
}
protected abstract IJsonSerializer CreateJsonSerializer();
private void SetHttpLimit()
{
try
{
// Increase the max http request limit
#if NET46
ServicePointManager.DefaultConnectionLimit = Math.Max(96, ServicePointManager.DefaultConnectionLimit);
#endif
}
catch (Exception ex)
{
Logger.ErrorException("Error setting http limit", ex);
}
}
/// <summary>
/// Installs the iso mounters.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task InstallIsoMounters(CancellationToken cancellationToken)
{
var list = new List<IIsoMounter>();
foreach (var isoMounter in GetExports<IIsoMounter>())
{
try
{
if (isoMounter.RequiresInstallation && !isoMounter.IsInstalled)
{
Logger.Info("Installing {0}", isoMounter.Name);
await isoMounter.Install(cancellationToken).ConfigureAwait(false);
}
list.Add(isoMounter);
}
catch (Exception ex)
{
Logger.ErrorException("{0} failed to load.", ex, isoMounter.Name);
}
}
IsoManager.AddParts(list);
}
/// <summary>
/// Runs the startup tasks.
/// </summary>
/// <returns>Task.</returns>
public virtual Task RunStartupTasks()
{
Resolve<ITaskManager>().AddTasks(GetExports<IScheduledTask>(false));
ConfigureAutorun();
ConfigurationManager.ConfigurationUpdated += OnConfigurationUpdated;
return Task.FromResult(true);
}
/// <summary>
/// Configures the autorun.
/// </summary>
private void ConfigureAutorun()
{
try
{
ConfigureAutoRunAtStartup(ConfigurationManager.CommonConfiguration.RunAtStartup);
}
catch (Exception ex)
{
Logger.ErrorException("Error configuring autorun", ex);
}
}
/// <summary>
/// Gets the composable part assemblies.
/// </summary>
/// <returns>IEnumerable{Assembly}.</returns>
protected abstract IEnumerable<Assembly> GetComposablePartAssemblies();
/// <summary>
/// Gets the configuration manager.
/// </summary>
/// <returns>IConfigurationManager.</returns>
protected abstract IConfigurationManager GetConfigurationManager();
/// <summary>
/// Finds the parts.
/// </summary>
protected virtual void FindParts()
{
ConfigurationManager.AddParts(GetExports<IConfigurationFactory>());
Plugins = GetExports<IPlugin>().Select(LoadPlugin).Where(i => i != null).ToArray();
}
private IPlugin LoadPlugin(IPlugin plugin)
{
try
{
var assemblyPlugin = plugin as IPluginAssembly;
if (assemblyPlugin != null)
{
#if NET46
var assembly = plugin.GetType().Assembly;
var assemblyName = assembly.GetName();
var attribute = (GuidAttribute)assembly.GetCustomAttributes(typeof(GuidAttribute), true)[0];
var assemblyId = new Guid(attribute.Value);
var assemblyFileName = assemblyName.Name + ".dll";
var assemblyFilePath = Path.Combine(ApplicationPaths.PluginsPath, assemblyFileName);
assemblyPlugin.SetAttributes(assemblyFilePath, assemblyFileName, assemblyName.Version, assemblyId);
#elif NETSTANDARD1_6
var typeInfo = plugin.GetType().GetTypeInfo();
var assembly = typeInfo.Assembly;
var assemblyName = assembly.GetName();
var attribute = (GuidAttribute)assembly.GetCustomAttribute(typeof(GuidAttribute));
var assemblyId = new Guid(attribute.Value);
var assemblyFileName = assemblyName.Name + ".dll";
var assemblyFilePath = Path.Combine(ApplicationPaths.PluginsPath, assemblyFileName);
assemblyPlugin.SetAttributes(assemblyFilePath, assemblyFileName, assemblyName.Version, assemblyId);
#else
return null;
#endif
}
var isFirstRun = !File.Exists(plugin.ConfigurationFilePath);
plugin.SetStartupInfo(isFirstRun, File.GetLastWriteTimeUtc, s => Directory.CreateDirectory(s));
}
catch (Exception ex)
{
Logger.ErrorException("Error loading plugin {0}", ex, plugin.GetType().FullName);
return null;
}
return plugin;
}
/// <summary>
/// Discovers the types.
/// </summary>
protected void DiscoverTypes()
{
FailedAssemblies.Clear();
var assemblies = GetComposablePartAssemblies().ToList();
foreach (var assembly in assemblies)
{
Logger.Info("Loading {0}", assembly.FullName);
}
AllConcreteTypes = assemblies
.SelectMany(GetTypes)
.Where(t =>
{
#if NET46
return t.IsClass && !t.IsAbstract && !t.IsInterface && !t.IsGenericType;
#endif
#if NETSTANDARD1_6
var typeInfo = t.GetTypeInfo();
return typeInfo.IsClass && !typeInfo.IsAbstract && !typeInfo.IsInterface && !typeInfo.IsGenericType;
#endif
return false;
})
.ToArray();
}
/// <summary>
/// Registers resources that classes will depend on
/// </summary>
/// <returns>Task.</returns>
protected virtual Task RegisterResources(IProgress<double> progress)
{
RegisterSingleInstance(ConfigurationManager);
RegisterSingleInstance<IApplicationHost>(this);
RegisterSingleInstance<IApplicationPaths>(ApplicationPaths);
TaskManager = new TaskManager(ApplicationPaths, JsonSerializer, LogManager.GetLogger("TaskManager"), FileSystemManager, SystemEvents);
RegisterSingleInstance(JsonSerializer);
RegisterSingleInstance(XmlSerializer);
RegisterSingleInstance(MemoryStreamFactory);
RegisterSingleInstance(SystemEvents);
RegisterSingleInstance(LogManager);
RegisterSingleInstance(Logger);
RegisterSingleInstance(TaskManager);
RegisterSingleInstance(EnvironmentInfo);
RegisterSingleInstance(FileSystemManager);
HttpClient = new HttpClientManager.HttpClientManager(ApplicationPaths, LogManager.GetLogger("HttpClient"), FileSystemManager, MemoryStreamFactory);
RegisterSingleInstance(HttpClient);
RegisterSingleInstance(NetworkManager);
IsoManager = new IsoManager();
RegisterSingleInstance(IsoManager);
ProcessFactory = new ProcessFactory();
RegisterSingleInstance(ProcessFactory);
TimerFactory = new TimerFactory();
RegisterSingleInstance(TimerFactory);
SocketFactory = new SocketFactory(null);
RegisterSingleInstance(SocketFactory);
RegisterSingleInstance(CryptographyProvider);
return Task.FromResult(true);
}
/// <summary>
/// Gets a list of types within an assembly
/// This will handle situations that would normally throw an exception - such as a type within the assembly that depends on some other non-existant reference
/// </summary>
/// <param name="assembly">The assembly.</param>
/// <returns>IEnumerable{Type}.</returns>
/// <exception cref="System.ArgumentNullException">assembly</exception>
protected IEnumerable<Type> GetTypes(Assembly assembly)
{
if (assembly == null)
{
throw new ArgumentNullException("assembly");
}
try
{
return assembly.GetTypes();
}
catch (ReflectionTypeLoadException ex)
{
if (ex.LoaderExceptions != null)
{
foreach (var loaderException in ex.LoaderExceptions)
{
Logger.Error("LoaderException: " + loaderException.Message);
}
}
// If it fails we can still get a list of the Types it was able to resolve
return ex.Types.Where(t => t != null);
}
}
/// <summary>
/// Creates an instance of type and resolves all constructor dependancies
/// </summary>
/// <param name="type">The type.</param>
/// <returns>System.Object.</returns>
public object CreateInstance(Type type)
{
try
{
return Container.GetInstance(type);
}
catch (Exception ex)
{
Logger.ErrorException("Error creating {0}", ex, type.FullName);
throw;
}
}
/// <summary>
/// Creates the instance safe.
/// </summary>
/// <param name="type">The type.</param>
/// <returns>System.Object.</returns>
protected object CreateInstanceSafe(Type type)
{
try
{
return Container.GetInstance(type);
}
catch (Exception ex)
{
Logger.ErrorException("Error creating {0}", ex, type.FullName);
// Don't blow up in release mode
return null;
}
}
/// <summary>
/// Registers the specified obj.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj">The obj.</param>
/// <param name="manageLifetime">if set to <c>true</c> [manage lifetime].</param>
protected void RegisterSingleInstance<T>(T obj, bool manageLifetime = true)
where T : class
{
Container.RegisterSingleton(obj);
if (manageLifetime)
{
var disposable = obj as IDisposable;
if (disposable != null)
{
DisposableParts.Add(disposable);
}
}
}
/// <summary>
/// Registers the single instance.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="func">The func.</param>
protected void RegisterSingleInstance<T>(Func<T> func)
where T : class
{
Container.RegisterSingleton(func);
}
/// <summary>
/// Resolves this instance.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns>``0.</returns>
public T Resolve<T>()
{
return (T)Container.GetRegistration(typeof(T), true).GetInstance();
}
/// <summary>
/// Resolves this instance.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns>``0.</returns>
public T TryResolve<T>()
{
var result = Container.GetRegistration(typeof(T), false);
if (result == null)
{
return default(T);
}
return (T)result.GetInstance();
}
/// <summary>
/// Loads the assembly.
/// </summary>
/// <param name="file">The file.</param>
/// <returns>Assembly.</returns>
protected Assembly LoadAssembly(string file)
{
try
{
#if NET46
return Assembly.Load(File.ReadAllBytes(file));
#elif NETSTANDARD1_6
return AssemblyLoadContext.Default.LoadFromStream(new MemoryStream(File.ReadAllBytes(file)));
#endif
return null;
}
catch (Exception ex)
{
FailedAssemblies.Add(file);
Logger.ErrorException("Error loading assembly {0}", ex, file);
return null;
}
}
/// <summary>
/// Gets the export types.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns>IEnumerable{Type}.</returns>
public IEnumerable<Type> GetExportTypes<T>()
{
var currentType = typeof(T);
#if NET46
return AllConcreteTypes.Where(currentType.IsAssignableFrom);
#elif NETSTANDARD1_6
var currentTypeInfo = currentType.GetTypeInfo();
return AllConcreteTypes.Where(currentTypeInfo.IsAssignableFrom);
#endif
return new List<Type>();
}
/// <summary>
/// Gets the exports.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="manageLiftime">if set to <c>true</c> [manage liftime].</param>
/// <returns>IEnumerable{``0}.</returns>
public IEnumerable<T> GetExports<T>(bool manageLiftime = true)
{
var parts = GetExportTypes<T>()
.Select(CreateInstanceSafe)
.Where(i => i != null)
.Cast<T>()
.ToList();
if (manageLiftime)
{
lock (DisposableParts)
{
DisposableParts.AddRange(parts.OfType<IDisposable>());
}
}
return parts;
}
/// <summary>
/// Gets the application version.
/// </summary>
/// <value>The application version.</value>
public abstract Version ApplicationVersion { get; }
/// <summary>
/// Handles the ConfigurationUpdated event of the ConfigurationManager control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
/// <exception cref="System.NotImplementedException"></exception>
protected virtual void OnConfigurationUpdated(object sender, EventArgs e)
{
ConfigureAutorun();
}
protected abstract void ConfigureAutoRunAtStartup(bool autorun);
/// <summary>
/// Removes the plugin.
/// </summary>
/// <param name="plugin">The plugin.</param>
public void RemovePlugin(IPlugin plugin)
{
var list = Plugins.ToList();
list.Remove(plugin);
Plugins = list.ToArray();
}
/// <summary>
/// Gets a value indicating whether this instance can self restart.
/// </summary>
/// <value><c>true</c> if this instance can self restart; otherwise, <c>false</c>.</value>
public abstract bool CanSelfRestart { get; }
/// <summary>
/// Notifies that the kernel that a change has been made that requires a restart
/// </summary>
public void NotifyPendingRestart()
{
var changed = !HasPendingRestart;
HasPendingRestart = true;
if (changed)
{
EventHelper.QueueEventIfNotNull(HasPendingRestartChanged, this, EventArgs.Empty, Logger);
}
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public void Dispose()
{
Dispose(true);
}
/// <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)
{
var type = GetType();
Logger.Info("Disposing " + type.Name);
var parts = DisposableParts.Distinct().Where(i => i.GetType() != type).ToList();
DisposableParts.Clear();
foreach (var part in parts)
{
Logger.Info("Disposing " + part.GetType().Name);
try
{
part.Dispose();
}
catch (Exception ex)
{
Logger.ErrorException("Error disposing {0}", ex, part.GetType().Name);
}
}
}
}
/// <summary>
/// Restarts this instance.
/// </summary>
public abstract Task Restart();
/// <summary>
/// Gets or sets a value indicating whether this instance can self update.
/// </summary>
/// <value><c>true</c> if this instance can self update; otherwise, <c>false</c>.</value>
public abstract bool CanSelfUpdate { get; }
/// <summary>
/// Checks for update.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task{CheckForUpdateResult}.</returns>
public abstract Task<CheckForUpdateResult> CheckForApplicationUpdate(CancellationToken cancellationToken,
IProgress<double> progress);
/// <summary>
/// Updates the application.
/// </summary>
/// <param name="package">The package that contains the update</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task.</returns>
public abstract Task UpdateApplication(PackageVersionInfo package, CancellationToken cancellationToken,
IProgress<double> progress);
/// <summary>
/// Shuts down.
/// </summary>
public abstract Task Shutdown();
/// <summary>
/// Called when [application updated].
/// </summary>
/// <param name="package">The package.</param>
protected void OnApplicationUpdated(PackageVersionInfo package)
{
Logger.Info("Application has been updated to version {0}", package.versionStr);
EventHelper.FireEventIfNotNull(ApplicationUpdated, this, new GenericEventArgs<PackageVersionInfo>
{
Argument = package
}, Logger);
NotifyPendingRestart();
}
}
}