jellyfin/Jellyfin.Server/Helpers/StartupHelpers.cs
2023-08-23 09:10:48 +02:00

301 lines
12 KiB
C#

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Text;
using System.Threading.Tasks;
using Emby.Server.Implementations;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Extensions;
using MediaBrowser.Model.IO;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Serilog;
using ILogger = Microsoft.Extensions.Logging.ILogger;
namespace Jellyfin.Server.Helpers;
/// <summary>
/// A class containing helper methods for server startup.
/// </summary>
public static class StartupHelpers
{
private static readonly string[] _relevantEnvVarPrefixes = { "JELLYFIN_", "DOTNET_", "ASPNETCORE_" };
/// <summary>
/// Logs relevant environment variables and information about the host.
/// </summary>
/// <param name="logger">The logger to use.</param>
/// <param name="appPaths">The application paths to use.</param>
public static void LogEnvironmentInfo(ILogger logger, IApplicationPaths appPaths)
{
// Distinct these to prevent users from reporting problems that aren't actually problems
var commandLineArgs = Environment
.GetCommandLineArgs()
.Distinct();
// Get all relevant environment variables
var allEnvVars = Environment.GetEnvironmentVariables();
var relevantEnvVars = new Dictionary<object, object>();
foreach (var key in allEnvVars.Keys)
{
if (_relevantEnvVarPrefixes.Any(prefix => key.ToString()!.StartsWith(prefix, StringComparison.OrdinalIgnoreCase)))
{
relevantEnvVars.Add(key, allEnvVars[key]!);
}
}
logger.LogInformation("Environment Variables: {EnvVars}", relevantEnvVars);
logger.LogInformation("Arguments: {Args}", commandLineArgs);
logger.LogInformation("Operating system: {OS}", RuntimeInformation.OSDescription);
logger.LogInformation("Architecture: {Architecture}", RuntimeInformation.OSArchitecture);
logger.LogInformation("64-Bit Process: {Is64Bit}", Environment.Is64BitProcess);
logger.LogInformation("User Interactive: {IsUserInteractive}", Environment.UserInteractive);
logger.LogInformation("Processor count: {ProcessorCount}", Environment.ProcessorCount);
logger.LogInformation("Program data path: {ProgramDataPath}", appPaths.ProgramDataPath);
logger.LogInformation("Web resources path: {WebPath}", appPaths.WebPath);
logger.LogInformation("Application directory: {ApplicationPath}", appPaths.ProgramSystemPath);
}
/// <summary>
/// Create the data, config and log paths from the variety of inputs(command line args,
/// environment variables) or decide on what default to use. For Windows it's %AppPath%
/// for everything else the
/// <a href="https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html">XDG approach</a>
/// is followed.
/// </summary>
/// <param name="options">The <see cref="StartupOptions" /> for this instance.</param>
/// <returns><see cref="ServerApplicationPaths" />.</returns>
public static ServerApplicationPaths CreateApplicationPaths(StartupOptions options)
{
// LocalApplicationData
// Windows: %LocalAppData%
// macOS: NSApplicationSupportDirectory
// UNIX: $XDG_DATA_HOME
var dataDir = options.DataDir
?? Environment.GetEnvironmentVariable("JELLYFIN_DATA_DIR")
?? Path.Join(
Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
"jellyfin");
var configDir = options.ConfigDir ?? Environment.GetEnvironmentVariable("JELLYFIN_CONFIG_DIR");
if (configDir is null)
{
configDir = Path.Join(dataDir, "config");
if (options.DataDir is null
&& !Directory.Exists(configDir)
&& !OperatingSystem.IsWindows()
&& !OperatingSystem.IsMacOS())
{
// UNIX: $XDG_CONFIG_HOME
configDir = Path.Join(
Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
"jellyfin");
}
}
var cacheDir = options.CacheDir ?? Environment.GetEnvironmentVariable("JELLYFIN_CACHE_DIR");
if (cacheDir is null)
{
if (OperatingSystem.IsWindows() || OperatingSystem.IsMacOS())
{
cacheDir = Path.Join(dataDir, "cache");
}
else
{
cacheDir = Path.Join(GetXdgCacheHome(), "jellyfin");
}
}
var webDir = options.WebDir ?? Environment.GetEnvironmentVariable("JELLYFIN_WEB_DIR");
if (webDir is null)
{
webDir = Path.Join(AppContext.BaseDirectory, "jellyfin-web");
}
var logDir = options.LogDir ?? Environment.GetEnvironmentVariable("JELLYFIN_LOG_DIR");
if (logDir is null)
{
logDir = Path.Join(dataDir, "log");
}
// Normalize paths. Only possible with GetFullPath for now - https://github.com/dotnet/runtime/issues/2162
dataDir = Path.GetFullPath(dataDir);
logDir = Path.GetFullPath(logDir);
configDir = Path.GetFullPath(configDir);
cacheDir = Path.GetFullPath(cacheDir);
webDir = Path.GetFullPath(webDir);
// Ensure the main folders exist before we continue
try
{
Directory.CreateDirectory(dataDir);
Directory.CreateDirectory(logDir);
Directory.CreateDirectory(configDir);
Directory.CreateDirectory(cacheDir);
}
catch (IOException ex)
{
Console.Error.WriteLine("Error whilst attempting to create folder");
Console.Error.WriteLine(ex.ToString());
Environment.Exit(1);
}
return new ServerApplicationPaths(dataDir, logDir, configDir, cacheDir, webDir);
}
private static string GetXdgCacheHome()
{
// $XDG_CACHE_HOME defines the base directory relative to which
// user specific non-essential data files should be stored.
var cacheHome = Environment.GetEnvironmentVariable("XDG_CACHE_HOME");
// If $XDG_CACHE_HOME is either not set or a relative path,
// a default equal to $HOME/.cache should be used.
if (cacheHome is null || !cacheHome.StartsWith('/'))
{
cacheHome = Path.Join(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
".cache");
}
return cacheHome;
}
/// <summary>
/// Gets the path for the unix socket Kestrel should bind to.
/// </summary>
/// <param name="startupConfig">The startup config.</param>
/// <param name="appPaths">The application paths.</param>
/// <returns>The path for Kestrel to bind to.</returns>
public static string GetUnixSocketPath(IConfiguration startupConfig, IApplicationPaths appPaths)
{
var socketPath = startupConfig.GetUnixSocketPath();
if (string.IsNullOrEmpty(socketPath))
{
const string SocketFile = "jellyfin.sock";
var xdgRuntimeDir = Environment.GetEnvironmentVariable("XDG_RUNTIME_DIR");
if (xdgRuntimeDir is null)
{
// Fall back to config dir
socketPath = Path.Join(appPaths.ConfigurationDirectoryPath, SocketFile);
}
else
{
socketPath = Path.Join(xdgRuntimeDir, SocketFile);
}
}
return socketPath;
}
/// <summary>
/// Sets the unix file permissions for Kestrel's socket file.
/// </summary>
/// <param name="startupConfig">The startup config.</param>
/// <param name="socketPath">The socket path.</param>
/// <param name="logger">The logger.</param>
[UnsupportedOSPlatform("windows")]
public static void SetUnixSocketPermissions(IConfiguration startupConfig, string socketPath, ILogger logger)
{
var socketPerms = startupConfig.GetUnixSocketPermissions();
if (!string.IsNullOrEmpty(socketPerms))
{
File.SetUnixFileMode(socketPath, (UnixFileMode)Convert.ToInt32(socketPerms, 8));
logger.LogInformation("Kestrel unix socket permissions set to {SocketPerms}", socketPerms);
}
}
/// <summary>
/// Initialize the logging configuration file using the bundled resource file as a default if it doesn't exist
/// already.
/// </summary>
/// <param name="appPaths">The application paths.</param>
/// <returns>A task representing the creation of the configuration file, or a completed task if the file already exists.</returns>
public static async Task InitLoggingConfigFile(IApplicationPaths appPaths)
{
// Do nothing if the config file already exists
string configPath = Path.Combine(appPaths.ConfigurationDirectoryPath, Program.LoggingConfigFileDefault);
if (File.Exists(configPath))
{
return;
}
// Get a stream of the resource contents
// NOTE: The .csproj name is used instead of the assembly name in the resource path
const string ResourcePath = "Jellyfin.Server.Resources.Configuration.logging.json";
Stream resource = typeof(Program).Assembly.GetManifestResourceStream(ResourcePath)
?? throw new InvalidOperationException($"Invalid resource path: '{ResourcePath}'");
await using (resource.ConfigureAwait(false))
{
Stream dst = new FileStream(configPath, FileMode.CreateNew, FileAccess.Write, FileShare.None, IODefaults.FileStreamBufferSize, FileOptions.Asynchronous);
await using (dst.ConfigureAwait(false))
{
// Copy the resource contents to the expected file path for the config file
await resource.CopyToAsync(dst).ConfigureAwait(false);
}
}
}
/// <summary>
/// Initialize Serilog using configuration and fall back to defaults on failure.
/// </summary>
/// <param name="configuration">The configuration object.</param>
/// <param name="appPaths">The application paths.</param>
public static void InitializeLoggingFramework(IConfiguration configuration, IApplicationPaths appPaths)
{
try
{
// Serilog.Log is used by SerilogLoggerFactory when no logger is specified
Log.Logger = new LoggerConfiguration()
.ReadFrom.Configuration(configuration)
.Enrich.FromLogContext()
.Enrich.WithThreadId()
.CreateLogger();
}
catch (Exception ex)
{
Log.Logger = new LoggerConfiguration()
.WriteTo.Console(
outputTemplate: "[{Timestamp:HH:mm:ss}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message:lj}{NewLine}{Exception}",
formatProvider: CultureInfo.InvariantCulture)
.WriteTo.Async(x => x.File(
Path.Combine(appPaths.LogDirectoryPath, "log_.log"),
rollingInterval: RollingInterval.Day,
outputTemplate: "[{Timestamp:yyyy-MM-dd HH:mm:ss.fff zzz}] [{Level:u3}] [{ThreadId}] {SourceContext}: {Message}{NewLine}{Exception}",
formatProvider: CultureInfo.InvariantCulture,
encoding: Encoding.UTF8))
.Enrich.FromLogContext()
.Enrich.WithThreadId()
.CreateLogger();
Log.Logger.Fatal(ex, "Failed to create/read logger configuration");
}
}
/// <summary>
/// Call static initialization methods for the application.
/// </summary>
public static void PerformStaticInitialization()
{
// Make sure we have all the code pages we can get
// Ref: https://docs.microsoft.com/en-us/dotnet/api/system.text.codepagesencodingprovider.instance?view=netcore-3.0#remarks
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
// Increase the max http request limit
// The default connection limit is 10 for ASP.NET hosted applications and 2 for all others.
ServicePointManager.DefaultConnectionLimit = Math.Max(96, ServicePointManager.DefaultConnectionLimit);
// Disable the "Expect: 100-Continue" header by default
// http://stackoverflow.com/questions/566437/http-post-returns-the-error-417-expectation-failed-c
ServicePointManager.Expect100Continue = false;
}
}