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BaseApplicationHost.cs
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BaseApplicationHost.cs
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using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Events;
using MediaBrowser.Common.Implementations.Archiving;
using MediaBrowser.Common.Implementations.Devices;
using MediaBrowser.Common.Implementations.IO;
using MediaBrowser.Common.Implementations.ScheduledTasks;
using MediaBrowser.Common.Implementations.Security;
using MediaBrowser.Common.Implementations.Serialization;
using MediaBrowser.Common.Implementations.Updates;
using MediaBrowser.Common.Net;
using MediaBrowser.Common.Plugins;
using MediaBrowser.Common.Progress;
using MediaBrowser.Common.ScheduledTasks;
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 ServiceStack;
using SimpleInjector;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using CommonIO;
namespace MediaBrowser.Common.Implementations
{
/// <summary>
/// Class BaseApplicationHost
/// </summary>
/// <typeparam name="TApplicationPathsType">The type of the T application paths type.</typeparam>
public abstract class BaseApplicationHost<TApplicationPathsType> : IApplicationHost, IDependencyContainer
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 IEnumerable<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 container
/// </summary>
protected readonly Container Container = new Container();
/// <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 security manager.
/// </summary>
/// <value>The security manager.</value>
protected ISecurityManager SecurityManager { 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; }
/// <summary>
/// Gets or sets the installation manager.
/// </summary>
/// <value>The installation manager.</value>
protected IInstallationManager InstallationManager { get; private set; }
protected IFileSystem FileSystemManager { get; private set; }
/// <summary>
/// Gets or sets the zip client.
/// </summary>
/// <value>The zip client.</value>
protected IZipClient ZipClient { get; private set; }
protected IIsoManager IsoManager { 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; }
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 Environment.OSVersion.VersionString; }
}
/// <summary>
/// Initializes a new instance of the <see cref="BaseApplicationHost{TApplicationPathsType}"/> class.
/// </summary>
protected BaseApplicationHost(TApplicationPathsType applicationPaths,
ILogManager logManager,
IFileSystem fileSystem)
{
XmlSerializer = new MediaBrowser.Common.Implementations.Serialization.XmlSerializer (fileSystem);
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)
{
try
{
// https://github.com/ServiceStack/ServiceStack/blob/master/tests/ServiceStack.WebHost.IntegrationTests/Web.config#L4
Licensing.RegisterLicense("1001-e1JlZjoxMDAxLE5hbWU6VGVzdCBCdXNpbmVzcyxUeXBlOkJ1c2luZXNzLEhhc2g6UHVNTVRPclhvT2ZIbjQ5MG5LZE1mUTd5RUMzQnBucTFEbTE3TDczVEF4QUNMT1FhNXJMOWkzVjFGL2ZkVTE3Q2pDNENqTkQyUktRWmhvUVBhYTBiekJGUUZ3ZE5aZHFDYm9hL3lydGlwUHI5K1JsaTBYbzNsUC85cjVJNHE5QVhldDN6QkE4aTlvdldrdTgyTk1relY2eis2dFFqTThYN2lmc0JveHgycFdjPSxFeHBpcnk6MjAxMy0wMS0wMX0=");
}
catch
{
// Failing under mono
}
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())));
builder.AppendLine(string.Format("Operating system: {0}", Environment.OSVersion));
builder.AppendLine(string.Format("Processor count: {0}", Environment.ProcessorCount));
builder.AppendLine(string.Format("64-Bit OS: {0}", Environment.Is64BitOperatingSystem));
builder.AppendLine(string.Format("64-Bit Process: {0}", Environment.Is64BitProcess));
builder.AppendLine(string.Format("Program data path: {0}", appPaths.ProgramDataPath));
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));
}
}
builder.AppendLine(string.Format("Application Path: {0}", appPaths.ApplicationPath));
return builder;
}
protected virtual IJsonSerializer CreateJsonSerializer()
{
return new JsonSerializer(FileSystemManager);
}
private void SetHttpLimit()
{
try
{
// Increase the max http request limit
ServicePointManager.DefaultConnectionLimit = Math.Max(96, ServicePointManager.DefaultConnectionLimit);
}
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()
{
RegisterModules();
ConfigurationManager.AddParts(GetExports<IConfigurationFactory>());
Plugins = GetExports<IPlugin>();
}
/// <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 => t.IsClass && !t.IsAbstract && !t.IsInterface && !t.IsGenericType)
.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);
RegisterSingleInstance(JsonSerializer);
RegisterSingleInstance(XmlSerializer);
RegisterSingleInstance(LogManager);
RegisterSingleInstance(Logger);
RegisterSingleInstance(TaskManager);
RegisterSingleInstance(FileSystemManager);
HttpClient = new HttpClientManager.HttpClientManager(ApplicationPaths, LogManager.GetLogger("HttpClient"), FileSystemManager);
RegisterSingleInstance(HttpClient);
NetworkManager = CreateNetworkManager(LogManager.GetLogger("NetworkManager"));
RegisterSingleInstance(NetworkManager);
SecurityManager = new PluginSecurityManager(this, HttpClient, JsonSerializer, ApplicationPaths, LogManager);
RegisterSingleInstance(SecurityManager);
InstallationManager = new InstallationManager(LogManager.GetLogger("InstallationManager"), this, ApplicationPaths, HttpClient, JsonSerializer, SecurityManager, ConfigurationManager, FileSystemManager);
RegisterSingleInstance(InstallationManager);
ZipClient = new ZipClient(FileSystemManager);
RegisterSingleInstance(ZipClient);
IsoManager = new IsoManager();
RegisterSingleInstance(IsoManager);
return Task.FromResult (true);
}
private void RegisterModules()
{
var moduleTypes = GetExportTypes<IDependencyModule>();
foreach (var type in moduleTypes)
{
try
{
var instance = Activator.CreateInstance(type) as IDependencyModule;
if (instance != null)
instance.BindDependencies(this);
}
catch (Exception ex)
{
Logger.ErrorException("Error setting up dependency bindings for " + type.Name, ex);
}
}
}
/// <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);
}
}
protected abstract INetworkManager CreateNetworkManager(ILogger logger);
/// <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.Error("Error creating {0}", ex, type.Name);
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.Error("Error creating {0}", ex, type.Name);
// Don't blow up in release mode
return null;
}
}
void IDependencyContainer.RegisterSingleInstance<T>(T obj, bool manageLifetime)
{
RegisterSingleInstance(obj, manageLifetime);
}
/// <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);
}
}
}
void IDependencyContainer.RegisterSingleInstance<T>(Func<T> func)
{
RegisterSingleInstance(func);
}
/// <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);
}
void IDependencyContainer.Register(Type typeInterface, Type typeImplementation)
{
Container.Register(typeInterface, typeImplementation);
}
/// <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
{
return Assembly.Load(File.ReadAllBytes(file));
}
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);
return AllConcreteTypes.AsParallel().Where(currentType.IsAssignableFrom);
}
/// <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;
}
/// <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();
}
}
}