Adding the UI to the same repo. Made some default theme progress
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LukePulverenti Luke Pulverenti luke pulverenti
parent
d8c01ded6e
commit
119dfc3ac7
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using MediaBrowser.Common.Logging;
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using MediaBrowser.Common.Plugins;
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using MediaBrowser.Common.Serialization;
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using MediaBrowser.Model.DTO;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.ComponentModel.Composition.Hosting;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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namespace MediaBrowser.UI.Controller
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{
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/// <summary>
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/// This keeps ui plugin assemblies in sync with plugins installed on the server
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/// </summary>
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public class PluginUpdater
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{
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/// <summary>
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/// Gets the list of currently installed UI plugins
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/// </summary>
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[ImportMany(typeof(BasePlugin))]
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private IEnumerable<BasePlugin> CurrentPlugins { get; set; }
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private CompositionContainer CompositionContainer { get; set; }
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public async Task<PluginUpdateResult> UpdatePlugins()
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{
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// First load the plugins that are currently installed
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ReloadComposableParts();
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Logger.LogInfo("Downloading list of installed plugins");
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PluginInfo[] allInstalledPlugins = await UIKernel.Instance.ApiClient.GetInstalledPluginsAsync().ConfigureAwait(false);
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IEnumerable<PluginInfo> uiPlugins = allInstalledPlugins.Where(p => p.DownloadToUI);
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PluginUpdateResult result = new PluginUpdateResult();
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result.DeletedPlugins = DeleteUninstalledPlugins(uiPlugins);
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await DownloadPluginAssemblies(uiPlugins, result).ConfigureAwait(false);
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// If any new assemblies were downloaded we'll have to reload the CurrentPlugins list
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if (result.NewlyInstalledPlugins.Any())
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{
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ReloadComposableParts();
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}
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result.UpdatedConfigurations = await DownloadPluginConfigurations(uiPlugins).ConfigureAwait(false);
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CompositionContainer.Dispose();
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return result;
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}
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/// <summary>
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/// Downloads plugin assemblies from the server, if they need to be installed or updated.
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/// </summary>
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private async Task DownloadPluginAssemblies(IEnumerable<PluginInfo> uiPlugins, PluginUpdateResult result)
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{
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List<PluginInfo> newlyInstalledPlugins = new List<PluginInfo>();
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List<PluginInfo> updatedPlugins = new List<PluginInfo>();
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// Loop through the list of plugins that are on the server
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foreach (PluginInfo pluginInfo in uiPlugins)
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{
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// See if it is already installed in the UI
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BasePlugin installedPlugin = CurrentPlugins.FirstOrDefault(p => p.AssemblyFileName.Equals(pluginInfo.AssemblyFileName, StringComparison.OrdinalIgnoreCase));
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// Download the plugin if it is not present, or if the current version is out of date
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bool downloadPlugin = installedPlugin == null;
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if (installedPlugin != null)
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{
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Version serverVersion = Version.Parse(pluginInfo.Version);
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downloadPlugin = serverVersion > installedPlugin.Version;
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}
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if (downloadPlugin)
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{
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await DownloadPlugin(pluginInfo).ConfigureAwait(false);
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if (installedPlugin == null)
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{
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newlyInstalledPlugins.Add(pluginInfo);
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}
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else
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{
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updatedPlugins.Add(pluginInfo);
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}
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}
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}
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result.NewlyInstalledPlugins = newlyInstalledPlugins;
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result.UpdatedPlugins = updatedPlugins;
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}
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/// <summary>
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/// Downloads plugin configurations from the server.
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/// </summary>
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private async Task<List<PluginInfo>> DownloadPluginConfigurations(IEnumerable<PluginInfo> uiPlugins)
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{
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List<PluginInfo> updatedPlugins = new List<PluginInfo>();
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// Loop through the list of plugins that are on the server
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foreach (PluginInfo pluginInfo in uiPlugins)
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{
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// See if it is already installed in the UI
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BasePlugin installedPlugin = CurrentPlugins.First(p => p.AssemblyFileName.Equals(pluginInfo.AssemblyFileName, StringComparison.OrdinalIgnoreCase));
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if (installedPlugin.ConfigurationDateLastModified < pluginInfo.ConfigurationDateLastModified)
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{
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await DownloadPluginConfiguration(installedPlugin, pluginInfo).ConfigureAwait(false);
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updatedPlugins.Add(pluginInfo);
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}
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}
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return updatedPlugins;
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}
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/// <summary>
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/// Downloads a plugin assembly from the server
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/// </summary>
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private async Task DownloadPlugin(PluginInfo plugin)
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{
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Logger.LogInfo("Downloading {0} Plugin", plugin.Name);
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string path = Path.Combine(UIKernel.Instance.ApplicationPaths.PluginsPath, plugin.AssemblyFileName);
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// First download to a MemoryStream. This way if the download is cut off, we won't be left with a partial file
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using (MemoryStream memoryStream = new MemoryStream())
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{
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Stream assemblyStream = await UIKernel.Instance.ApiClient.GetPluginAssemblyAsync(plugin).ConfigureAwait(false);
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await assemblyStream.CopyToAsync(memoryStream).ConfigureAwait(false);
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memoryStream.Position = 0;
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using (FileStream fileStream = new FileStream(path, FileMode.Create))
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{
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await memoryStream.CopyToAsync(fileStream).ConfigureAwait(false);
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}
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}
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}
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/// <summary>
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/// Downloads the latest configuration for a plugin
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/// </summary>
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private async Task DownloadPluginConfiguration(BasePlugin plugin, PluginInfo pluginInfo)
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{
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Logger.LogInfo("Downloading {0} Configuration", plugin.Name);
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object config = await UIKernel.Instance.ApiClient.GetPluginConfigurationAsync(pluginInfo, plugin.ConfigurationType).ConfigureAwait(false);
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XmlSerializer.SerializeToFile(config, plugin.ConfigurationFilePath);
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File.SetLastWriteTimeUtc(plugin.ConfigurationFilePath, pluginInfo.ConfigurationDateLastModified);
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}
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/// <summary>
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/// Deletes any plugins that have been uninstalled from the server
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/// </summary>
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private IEnumerable<string> DeleteUninstalledPlugins(IEnumerable<PluginInfo> uiPlugins)
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{
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var deletedPlugins = new List<string>();
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foreach (BasePlugin plugin in CurrentPlugins)
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{
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PluginInfo latest = uiPlugins.FirstOrDefault(p => p.AssemblyFileName.Equals(plugin.AssemblyFileName, StringComparison.OrdinalIgnoreCase));
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if (latest == null)
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{
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DeletePlugin(plugin);
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deletedPlugins.Add(plugin.Name);
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}
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}
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return deletedPlugins;
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}
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/// <summary>
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/// Deletes an installed ui plugin.
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/// Leaves config and data behind in the event it is later re-installed
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/// </summary>
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private void DeletePlugin(BasePlugin plugin)
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{
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Logger.LogInfo("Deleting {0} Plugin", plugin.Name);
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string path = plugin.AssemblyFilePath;
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if (File.Exists(path))
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{
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File.Delete(path);
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}
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}
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/// <summary>
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/// Re-uses MEF within the kernel to discover installed plugins
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/// </summary>
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private void ReloadComposableParts()
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{
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if (CompositionContainer != null)
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{
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CompositionContainer.Dispose();
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}
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CompositionContainer = UIKernel.Instance.GetCompositionContainer();
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CompositionContainer.ComposeParts(this);
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CompositionContainer.Catalog.Dispose();
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foreach (BasePlugin plugin in CurrentPlugins)
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{
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plugin.Initialize(UIKernel.Instance, false);
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}
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}
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}
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public class PluginUpdateResult
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{
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public IEnumerable<string> DeletedPlugins { get; set; }
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public IEnumerable<PluginInfo> NewlyInstalledPlugins { get; set; }
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public IEnumerable<PluginInfo> UpdatedPlugins { get; set; }
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public IEnumerable<PluginInfo> UpdatedConfigurations { get; set; }
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}
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}
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