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using System;
using System.IO;
using System.Linq;
using Serilog;
using Serilog.Core;
using VNLib.Tools.Build.Executor.Model;
namespace VNLib.Tools.Build.Executor.Constants
{
internal static class Config
{
//relative local directores to the project root
public const string BUILD_DIR_NAME = ".build";
public const string LOG_DIR_NAME = ".build/log";
public const string BUILD_CONFIG = "build.conf.json";
public const string SCRATCH_DIR = ".build/scratch";
public const string SUM_DIR = ".build/sums";
public const string OUTPUT_DIR = ".build/output";
public const string SLEET_DIR = ".build/feed";
/// <summary>
/// Gets the system wide <see cref="Logger"/> log writer instance
/// </summary>
public static Logger Log { get; } = GetLog();
const string Template = "{Message:lj}{NewLine}{Exception}";
private static Logger GetLog()
{
string[] args = Environment.GetCommandLineArgs();
LoggerConfiguration conf = new();
if (args.Contains("-v") || args.Contains("--verbose"))
{
//Check for verbose logging level
conf.MinimumLevel.Verbose();
}
else if (args.Contains("-d") || args.Contains("--debug"))
{
//Check for debug
conf.MinimumLevel.Debug();
}
else
{
//Default information level
conf.MinimumLevel.Information();
}
//Create a console logger unless the silent flag is set
if (!args.Contains("-s"))
{
conf.WriteTo.Console(outputTemplate: Template);
}
//Creat the new log file
string logFilePath = Path.Combine(LOG_DIR_NAME, $"{DateTimeOffset.Now.ToUnixTimeSeconds()}-log.txt");
//Setup the log file output
conf.WriteTo.File(logFilePath, outputTemplate: Template);
return conf.CreateLogger();
}
/// <summary>
/// Cleans up old build log files, so that only 100 log files remain in the log directory
/// </summary>
public static void TrimLogs(IDirectoryIndex dirIndex, int maxLogs)
{
try
{
//Get all log files in the log directory and cleanup any files after the max log count
FileInfo[] toDelete = dirIndex.LogDir.EnumerateFiles("*.txt", SearchOption.TopDirectoryOnly)
.OrderByDescending(static f => f.LastWriteTimeUtc)
.Skip(maxLogs)
.ToArray();
foreach (FileInfo file in toDelete)
{
file.Delete();
}
Log.Debug("Cleaned {file} log files", toDelete.Length);
}
catch (Exception ex)
{
Log.Warning(ex, "Failed to cleanup log files");
}
}
}
}
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