698 lines
23 KiB
C#
698 lines
23 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Events;
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using MediaBrowser.Common.Implementations.Archiving;
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using MediaBrowser.Common.Implementations.IO;
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using MediaBrowser.Common.Implementations.ScheduledTasks;
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using MediaBrowser.Common.Implementations.Security;
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using MediaBrowser.Common.Implementations.Serialization;
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using MediaBrowser.Common.Implementations.Updates;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Common.Plugins;
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using MediaBrowser.Common.ScheduledTasks;
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using MediaBrowser.Common.Security;
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using MediaBrowser.Common.Updates;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using MediaBrowser.Model.Updates;
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using SimpleInjector;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Reflection;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Common.Implementations
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{
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/// <summary>
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/// Class BaseApplicationHost
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/// </summary>
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/// <typeparam name="TApplicationPathsType">The type of the T application paths type.</typeparam>
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public abstract class BaseApplicationHost<TApplicationPathsType> : IApplicationHost
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where TApplicationPathsType : class, IApplicationPaths, new()
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{
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/// <summary>
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/// Occurs when [has pending restart changed].
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/// </summary>
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public event EventHandler HasPendingRestartChanged;
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/// <summary>
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/// Occurs when [application updated].
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/// </summary>
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public event EventHandler<GenericEventArgs<Version>> ApplicationUpdated;
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/// <summary>
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/// Gets or sets a value indicating whether this instance has changes that require the entire application to restart.
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/// </summary>
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/// <value><c>true</c> if this instance has pending application restart; otherwise, <c>false</c>.</value>
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public bool HasPendingRestart { get; private set; }
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/// <summary>
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/// Gets or sets the logger.
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/// </summary>
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/// <value>The logger.</value>
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protected ILogger Logger { get; private set; }
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/// <summary>
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/// Gets or sets the plugins.
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/// </summary>
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/// <value>The plugins.</value>
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public IEnumerable<IPlugin> Plugins { get; protected set; }
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/// <summary>
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/// Gets or sets the log manager.
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/// </summary>
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/// <value>The log manager.</value>
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public ILogManager LogManager { get; protected set; }
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/// <summary>
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/// Gets the application paths.
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/// </summary>
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/// <value>The application paths.</value>
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protected TApplicationPathsType ApplicationPaths { get; private set; }
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/// <summary>
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/// The container
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/// </summary>
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protected readonly Container Container = new Container();
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/// <summary>
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/// The json serializer
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/// </summary>
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public readonly IJsonSerializer JsonSerializer = new JsonSerializer();
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/// <summary>
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/// The _XML serializer
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/// </summary>
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protected readonly IXmlSerializer XmlSerializer = new XmlSerializer();
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/// <summary>
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/// Gets assemblies that failed to load
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/// </summary>
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/// <value>The failed assemblies.</value>
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public List<string> FailedAssemblies { get; protected set; }
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/// <summary>
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/// Gets all types within all running assemblies
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/// </summary>
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/// <value>All types.</value>
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public Type[] AllTypes { get; protected set; }
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/// <summary>
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/// Gets all concrete types.
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/// </summary>
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/// <value>All concrete types.</value>
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public Type[] AllConcreteTypes { get; protected set; }
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/// <summary>
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/// The disposable parts
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/// </summary>
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protected readonly List<IDisposable> DisposableParts = new List<IDisposable>();
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/// <summary>
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/// Gets a value indicating whether this instance is first run.
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/// </summary>
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/// <value><c>true</c> if this instance is first run; otherwise, <c>false</c>.</value>
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public bool IsFirstRun { get; private set; }
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/// <summary>
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/// Gets the kernel.
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/// </summary>
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/// <value>The kernel.</value>
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protected ITaskManager TaskManager { get; private set; }
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/// <summary>
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/// Gets the security manager.
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/// </summary>
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/// <value>The security manager.</value>
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protected ISecurityManager SecurityManager { get; private set; }
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/// <summary>
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/// Gets the HTTP client.
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/// </summary>
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/// <value>The HTTP client.</value>
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protected IHttpClient HttpClient { get; private set; }
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/// <summary>
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/// Gets the network manager.
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/// </summary>
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/// <value>The network manager.</value>
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protected INetworkManager NetworkManager { get; private set; }
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/// <summary>
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/// Gets the configuration manager.
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/// </summary>
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/// <value>The configuration manager.</value>
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protected IConfigurationManager ConfigurationManager { get; private set; }
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/// <summary>
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/// Gets or sets the installation manager.
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/// </summary>
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/// <value>The installation manager.</value>
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protected IInstallationManager InstallationManager { get; private set; }
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protected IFileSystem FileSystemManager { get; private set; }
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/// <summary>
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/// Gets or sets the zip client.
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/// </summary>
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/// <value>The zip client.</value>
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protected IZipClient ZipClient { get; private set; }
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protected IIsoManager IsoManager { get; private set; }
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/// <summary>
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/// Initializes a new instance of the <see cref="BaseApplicationHost{TApplicationPathsType}"/> class.
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/// </summary>
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protected BaseApplicationHost(TApplicationPathsType applicationPaths, ILogManager logManager)
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{
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FailedAssemblies = new List<string>();
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ApplicationPaths = applicationPaths;
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LogManager = logManager;
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ConfigurationManager = GetConfigurationManager();
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}
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/// <summary>
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/// Inits this instance.
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/// </summary>
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/// <returns>Task.</returns>
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public virtual async Task Init()
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{
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IsFirstRun = !ConfigurationManager.CommonConfiguration.IsStartupWizardCompleted;
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Logger = LogManager.GetLogger("App");
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LogManager.LogSeverity = ConfigurationManager.CommonConfiguration.EnableDebugLevelLogging
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? LogSeverity.Debug
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: LogSeverity.Info;
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OnLoggerLoaded();
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DiscoverTypes();
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Logger.Info("Version {0} initializing", ApplicationVersion);
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SetHttpLimit();
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await RegisterResources().ConfigureAwait(false);
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FindParts();
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await InstallIsoMounters(CancellationToken.None).ConfigureAwait(false);
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}
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/// <summary>
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/// Called when [logger loaded].
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/// </summary>
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protected virtual void OnLoggerLoaded()
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{
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}
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private void SetHttpLimit()
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{
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try
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{
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// Increase the max http request limit
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ServicePointManager.DefaultConnectionLimit = Math.Max(96, ServicePointManager.DefaultConnectionLimit);
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error setting http limit", ex);
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}
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}
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/// <summary>
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/// Installs the iso mounters.
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/// </summary>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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private async Task InstallIsoMounters(CancellationToken cancellationToken)
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{
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var list = new List<IIsoMounter>();
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foreach (var isoMounter in GetExports<IIsoMounter>())
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{
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try
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{
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if (isoMounter.RequiresInstallation && !isoMounter.IsInstalled)
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{
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Logger.Info("Installing {0}", isoMounter.Name);
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await isoMounter.Install(cancellationToken).ConfigureAwait(false);
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}
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list.Add(isoMounter);
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}
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catch (Exception ex)
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{
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Logger.ErrorException("{0} failed to load.", ex, isoMounter.Name);
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}
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}
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IsoManager.AddParts(list);
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}
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/// <summary>
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/// Runs the startup tasks.
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/// </summary>
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/// <returns>Task.</returns>
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public virtual Task RunStartupTasks()
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{
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return Task.Run(() =>
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{
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Resolve<ITaskManager>().AddTasks(GetExports<IScheduledTask>(false));
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Task.Run(() => ConfigureAutorun());
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ConfigurationManager.ConfigurationUpdated += OnConfigurationUpdated;
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});
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}
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/// <summary>
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/// Configures the autorun.
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/// </summary>
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private void ConfigureAutorun()
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{
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try
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{
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ConfigureAutoRunAtStartup(ConfigurationManager.CommonConfiguration.RunAtStartup);
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}
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catch (Exception ex)
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{
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Logger.ErrorException("Error configuring autorun", ex);
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}
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}
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/// <summary>
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/// Gets the composable part assemblies.
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/// </summary>
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/// <returns>IEnumerable{Assembly}.</returns>
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protected abstract IEnumerable<Assembly> GetComposablePartAssemblies();
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/// <summary>
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/// Gets the configuration manager.
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/// </summary>
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/// <returns>IConfigurationManager.</returns>
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protected abstract IConfigurationManager GetConfigurationManager();
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/// <summary>
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/// Finds the parts.
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/// </summary>
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protected virtual void FindParts()
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{
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Plugins = GetExports<IPlugin>();
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}
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/// <summary>
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/// Discovers the types.
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/// </summary>
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protected void DiscoverTypes()
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{
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FailedAssemblies.Clear();
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var assemblies = GetComposablePartAssemblies().ToList();
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foreach (var assembly in assemblies)
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{
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Logger.Info("Loading {0}", assembly.FullName);
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}
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AllTypes = assemblies.SelectMany(GetTypes).ToArray();
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AllConcreteTypes = AllTypes.Where(t => t.IsClass && !t.IsAbstract && !t.IsInterface && !t.IsGenericType).ToArray();
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}
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/// <summary>
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/// Registers resources that classes will depend on
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/// </summary>
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/// <returns>Task.</returns>
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protected virtual Task RegisterResources()
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{
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return Task.Run(() =>
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{
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RegisterSingleInstance(ConfigurationManager);
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RegisterSingleInstance<IApplicationHost>(this);
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RegisterSingleInstance<IApplicationPaths>(ApplicationPaths);
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TaskManager = new TaskManager(ApplicationPaths, JsonSerializer, Logger);
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RegisterSingleInstance(JsonSerializer);
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RegisterSingleInstance(XmlSerializer);
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RegisterSingleInstance(LogManager);
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RegisterSingleInstance(Logger);
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RegisterSingleInstance(TaskManager);
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FileSystemManager = CreateFileSystemManager();
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RegisterSingleInstance(FileSystemManager);
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HttpClient = new HttpClientManager.HttpClientManager(ApplicationPaths, Logger, FileSystemManager);
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RegisterSingleInstance(HttpClient);
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NetworkManager = CreateNetworkManager();
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RegisterSingleInstance(NetworkManager);
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SecurityManager = new PluginSecurityManager(this, HttpClient, JsonSerializer, ApplicationPaths, NetworkManager);
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RegisterSingleInstance(SecurityManager);
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InstallationManager = new InstallationManager(Logger, this, ApplicationPaths, HttpClient, JsonSerializer, SecurityManager, NetworkManager, ConfigurationManager);
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RegisterSingleInstance(InstallationManager);
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ZipClient = new ZipClient();
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RegisterSingleInstance(ZipClient);
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IsoManager = new IsoManager();
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RegisterSingleInstance(IsoManager);
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});
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}
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protected virtual IFileSystem CreateFileSystemManager()
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{
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return new CommonFileSystem(Logger, true);
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}
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/// <summary>
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/// Gets a list of types within an assembly
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/// 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
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/// </summary>
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/// <param name="assembly">The assembly.</param>
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/// <returns>IEnumerable{Type}.</returns>
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/// <exception cref="System.ArgumentNullException">assembly</exception>
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protected IEnumerable<Type> GetTypes(Assembly assembly)
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{
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if (assembly == null)
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{
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throw new ArgumentNullException("assembly");
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}
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try
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{
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return assembly.GetTypes();
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}
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catch (ReflectionTypeLoadException ex)
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{
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// If it fails we can still get a list of the Types it was able to resolve
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return ex.Types.Where(t => t != null);
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}
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}
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protected abstract INetworkManager CreateNetworkManager();
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/// <summary>
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/// Creates an instance of type and resolves all constructor dependancies
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/// </summary>
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/// <param name="type">The type.</param>
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/// <returns>System.Object.</returns>
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public object CreateInstance(Type type)
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{
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try
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{
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return Container.GetInstance(type);
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}
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catch (Exception ex)
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{
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Logger.Error("Error creating {0}", ex, type.Name);
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throw;
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}
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}
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/// <summary>
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/// Creates the instance safe.
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/// </summary>
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/// <param name="type">The type.</param>
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/// <returns>System.Object.</returns>
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protected object CreateInstanceSafe(Type type)
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{
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try
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{
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return Container.GetInstance(type);
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}
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catch (Exception ex)
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{
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Logger.Error("Error creating {0}", ex, type.Name);
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#if DEBUG
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throw;
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#endif
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// Don't blow up in release mode
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return null;
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}
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}
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/// <summary>
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/// Registers the specified obj.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="obj">The obj.</param>
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/// <param name="manageLifetime">if set to <c>true</c> [manage lifetime].</param>
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protected void RegisterSingleInstance<T>(T obj, bool manageLifetime = true)
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where T : class
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{
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Container.RegisterSingle(obj);
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if (manageLifetime)
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{
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var disposable = obj as IDisposable;
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if (disposable != null)
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{
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DisposableParts.Add(disposable);
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}
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}
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}
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/// <summary>
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/// Registers the single instance.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="func">The func.</param>
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protected void RegisterSingleInstance<T>(Func<T> func)
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where T : class
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{
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Container.RegisterSingle(func);
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}
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/// <summary>
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/// Resolves this instance.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns>``0.</returns>
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public T Resolve<T>()
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{
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return (T)Container.GetRegistration(typeof(T), true).GetInstance();
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}
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/// <summary>
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/// Resolves this instance.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns>``0.</returns>
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public T TryResolve<T>()
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{
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var result = Container.GetRegistration(typeof(T), false);
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if (result == null)
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{
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return default(T);
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}
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return (T)result.GetInstance();
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}
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/// <summary>
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/// Loads the assembly.
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/// </summary>
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/// <param name="file">The file.</param>
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/// <returns>Assembly.</returns>
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protected Assembly LoadAssembly(string file)
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{
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try
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{
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return Assembly.Load(File.ReadAllBytes((file)));
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}
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catch (Exception ex)
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{
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FailedAssemblies.Add(file);
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Logger.ErrorException("Error loading assembly {0}", ex, file);
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return null;
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}
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}
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/// <summary>
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/// Gets the export types.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <returns>IEnumerable{Type}.</returns>
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public IEnumerable<Type> GetExportTypes<T>()
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{
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var currentType = typeof(T);
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return AllConcreteTypes.AsParallel().Where(currentType.IsAssignableFrom);
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}
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/// <summary>
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/// Gets the exports.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="manageLiftime">if set to <c>true</c> [manage liftime].</param>
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/// <returns>IEnumerable{``0}.</returns>
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public IEnumerable<T> GetExports<T>(bool manageLiftime = true)
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{
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var parts = GetExportTypes<T>()
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.Select(CreateInstanceSafe)
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.Where(i => i != null)
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.Cast<T>()
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.ToList();
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if (manageLiftime)
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{
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lock (DisposableParts)
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{
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DisposableParts.AddRange(parts.OfType<IDisposable>());
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}
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}
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return parts;
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}
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/// <summary>
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/// Gets the current application version
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/// </summary>
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/// <value>The application version.</value>
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public Version ApplicationVersion
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{
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get
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{
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return GetType().Assembly.GetName().Version;
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}
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}
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/// <summary>
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/// Handles the ConfigurationUpdated event of the ConfigurationManager control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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/// <exception cref="System.NotImplementedException"></exception>
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protected virtual void OnConfigurationUpdated(object sender, EventArgs e)
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{
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ConfigureAutorun();
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}
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protected abstract void ConfigureAutoRunAtStartup(bool autorun);
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/// <summary>
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/// Removes the plugin.
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/// </summary>
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/// <param name="plugin">The plugin.</param>
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public void RemovePlugin(IPlugin plugin)
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{
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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()
|
|
{
|
|
HasPendingRestart = true;
|
|
|
|
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);
|
|
|
|
part.Dispose();
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <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="newVersion">The new version.</param>
|
|
protected void OnApplicationUpdated(Version newVersion)
|
|
{
|
|
Logger.Info("Application has been updated to version {0}", newVersion);
|
|
|
|
EventHelper.QueueEventIfNotNull(ApplicationUpdated, this, new GenericEventArgs<Version> { Argument = newVersion }, Logger);
|
|
|
|
NotifyPendingRestart();
|
|
}
|
|
}
|
|
}
|