feat: add NLog
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d24f9d3996
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using System.Text;
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using NLog;
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using NLog.Targets;
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using LogLevel = NLog.LogLevel;
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namespace OliverBooth.Logging;
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/// <summary>
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/// Represents an NLog target which supports colorful output to stdout.
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/// </summary>
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internal sealed class ColorfulConsoleTarget : TargetWithLayout
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="ColorfulConsoleTarget" /> class.
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/// </summary>
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/// <param name="name">The name of the log target.</param>
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public ColorfulConsoleTarget(string name)
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{
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Name = name;
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}
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/// <inheritdoc />
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protected override void Write(LogEventInfo logEvent)
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{
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var message = new StringBuilder();
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message.Append(Layout.Render(logEvent));
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if (logEvent.Level == LogLevel.Warn)
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Console.ForegroundColor = ConsoleColor.Yellow;
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else if (logEvent.Level == LogLevel.Error || logEvent.Level == LogLevel.Fatal)
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Console.ForegroundColor = ConsoleColor.Red;
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if (logEvent.Exception is { } exception)
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message.Append($": {exception}");
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Console.WriteLine(message);
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Console.ResetColor();
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}
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}
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using System.Text;
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using NLog;
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using NLog.Targets;
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using OliverBooth.Services;
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namespace OliverBooth.Logging;
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/// <summary>
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/// Represents an NLog target which writes its output to a log file on disk.
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/// </summary>
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internal sealed class LogFileTarget : TargetWithLayout
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{
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private readonly LoggingService _loggingService;
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/// <summary>
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/// Initializes a new instance of the <see cref="LogFileTarget" /> class.
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/// </summary>
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/// <param name="name">The name of the log target.</param>
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/// <param name="loggingService">The <see cref="LoggingService" />.</param>
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public LogFileTarget(string name, LoggingService loggingService)
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{
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_loggingService = loggingService;
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Name = name;
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}
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/// <inheritdoc />
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protected override void Write(LogEventInfo logEvent)
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{
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_loggingService.ArchiveLogFilesAsync(false).GetAwaiter().GetResult();
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using FileStream stream = _loggingService.LogFile.Open(FileMode.Append, FileAccess.Write);
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using var writer = new StreamWriter(stream, Encoding.UTF8);
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writer.Write(Layout.Render(logEvent));
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if (logEvent.Exception is { } exception)
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writer.Write($": {exception}");
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writer.WriteLine();
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}
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}
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@ -15,6 +15,8 @@
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<ItemGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="7.0.9"/>
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<PackageReference Include="Microsoft.AspNetCore.Mvc.Razor.RuntimeCompilation" Version="7.0.9"/>
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<PackageReference Include="NLog" Version="5.2.3"/>
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<PackageReference Include="NLog.Extensions.Logging" Version="5.3.3"/>
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<PackageReference Include="X10D" Version="3.2.2"/>
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<PackageReference Include="X10D" Version="3.2.2"/>
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<PackageReference Include="X10D.Hosting" Version="3.2.2"/>
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<PackageReference Include="X10D.Hosting" Version="3.2.2"/>
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</ItemGroup>
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</ItemGroup>
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@ -1,5 +1,13 @@
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using NLog.Extensions.Logging;
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using OliverBooth.Services;
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using X10D.Hosting.DependencyInjection;
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WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
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WebApplicationBuilder builder = WebApplication.CreateBuilder(args);
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builder.Logging.ClearProviders();
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builder.Logging.AddNLog();
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builder.Services.AddHostedSingleton<LoggingService>();
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builder.Services.AddRazorPages().AddRazorRuntimeCompilation();
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builder.Services.AddRazorPages().AddRazorRuntimeCompilation();
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builder.Services.AddControllersWithViews();
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builder.Services.AddControllersWithViews();
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builder.Services.AddRouting(options => options.LowercaseUrls = true);
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builder.Services.AddRouting(options => options.LowercaseUrls = true);
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@ -0,0 +1,95 @@
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using System.IO.Compression;
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using NLog;
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using NLog.Config;
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using NLog.Layouts;
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using OliverBooth.Logging;
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using LogLevel = NLog.LogLevel;
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namespace OliverBooth.Services;
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/// <summary>
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/// Represents a class which implements a logging service that supports multiple log targets.
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/// </summary>
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/// <remarks>
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/// This class implements a logging structure similar to that of Minecraft, where historic logs are compressed to a .gz and
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/// the latest log is found in <c>logs/latest.log</c>.
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/// </remarks>
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internal sealed class LoggingService : BackgroundService
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{
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private const string LogFileName = "logs/latest.log";
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/// <summary>
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/// Initializes a new instance of the <see cref="LoggingService" /> class.
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/// </summary>
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public LoggingService()
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{
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LogFile = new FileInfo(LogFileName);
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}
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/// <summary>
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/// Gets or sets the log file.
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/// </summary>
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/// <value>The log file.</value>
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public FileInfo LogFile { get; set; }
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/// <summary>
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/// Archives any existing log files.
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/// </summary>
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public async Task ArchiveLogFilesAsync(bool archiveToday = true)
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{
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var latestFile = new FileInfo(LogFile.FullName);
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if (!latestFile.Exists) return;
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DateTime lastWrite = latestFile.LastWriteTime;
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string lastWriteDate = $"{lastWrite:yyyy-MM-dd}";
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var version = 0;
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string name;
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if (!archiveToday && lastWrite.Date == DateTime.Today) return;
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while (File.Exists(name = Path.Combine(LogFile.Directory!.FullName, $"{lastWriteDate}-{++version}.log.gz")))
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{
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// body ignored
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}
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await using (FileStream source = latestFile.OpenRead())
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{
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await using FileStream output = File.Create(name);
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await using var gzip = new GZipStream(output, CompressionMode.Compress);
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await source.CopyToAsync(gzip);
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}
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latestFile.Delete();
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}
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/// <inheritdoc />
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protected override Task ExecuteAsync(CancellationToken stoppingToken)
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{
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LogFile.Directory?.Create();
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LogManager.Setup(builder => builder.SetupExtensions(extensions =>
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{
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extensions.RegisterLayoutRenderer("TheTime", info => info.TimeStamp.ToString("HH:mm:ss"));
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extensions.RegisterLayoutRenderer("ServiceName", info => info.LoggerName);
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}));
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Layout? layout = Layout.FromString("[${TheTime} ${level:uppercase=true}] [${ServiceName}] ${message}");
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var config = new LoggingConfiguration();
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var fileLogger = new LogFileTarget("FileLogger", this) { Layout = layout };
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var consoleLogger = new ColorfulConsoleTarget("ConsoleLogger") { Layout = layout };
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#if DEBUG
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LogLevel minLevel = LogLevel.Debug;
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#else
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LogLevel minLevel = LogLevel.Info;
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if (!string.IsNullOrWhiteSpace(Environment.GetEnvironmentVariable("ENABLE_DEBUG_LOGGING")))
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minLevel = LogLevel.Debug;
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#endif
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config.AddRule(minLevel, LogLevel.Fatal, consoleLogger);
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config.AddRule(minLevel, LogLevel.Fatal, fileLogger);
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LogManager.Configuration = config;
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return ArchiveLogFilesAsync();
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}
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}
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