feat(client): file logging + llama.cpp fallback cooldown and parallel options

2026-08-02 01:24:09 +02:00
parent 44b09ffa86
commit b849cfd4b7
7 changed files with 457 additions and 121 deletions
@@ -0,0 +1,113 @@
+using System.Text;
+using Microsoft.Extensions.Logging;
+
+namespace Ngino.Client;
+
+internal sealed class FileLoggerProvider : ILoggerProvider
+{
+    private const long DefaultMaxFileSizeBytes = 5L * 1024 * 1024;
+    private const string LogFileName = "ngino-client.log";
+    private const string RotatedLogFileName = "ngino-client.log.1";
+
+    private readonly string _directory;
+    private readonly long _maxFileSizeBytes;
+    private readonly object _lock = new();
+    private StreamWriter _writer = null!;
+    private string _currentFile = null!;
+
+    public FileLoggerProvider(string directory, long maxFileSizeBytes = DefaultMaxFileSizeBytes)
+    {
+        _directory = directory;
+        _maxFileSizeBytes = maxFileSizeBytes;
+        Directory.CreateDirectory(directory);
+        OpenFile();
+    }
+
+    public string LogDirectory => _directory;
+
+    public ILogger CreateLogger(string categoryName) => new FileLogger(this, categoryName);
+
+    public void WriteLog(DateTime timestamp, LogLevel level, string category, string message)
+    {
+        lock (_lock)
+        {
+            var line = $"{timestamp:yyyy-MM-dd HH:mm:ss.fff} [{level}] {category}: {message}";
+            if (_writer.BaseStream.Length + line.Length + 2 > _maxFileSizeBytes)
+            {
+                RotateFile();
+            }
+
+            _writer.WriteLine(line);
+        }
+    }
+
+    public void Dispose()
+    {
+        lock (_lock)
+        {
+            _writer.Dispose();
+        }
+    }
+
+    private void OpenFile()
+    {
+        _currentFile = Path.Combine(_directory, LogFileName);
+        _writer = new StreamWriter(
+            new FileStream(_currentFile, FileMode.Append, FileAccess.Write, FileShare.ReadWrite),
+            new UTF8Encoding(encoderShouldEmitUTF8Identifier: false))
+        {
+            AutoFlush = true
+        };
+    }
+
+    private void RotateFile()
+    {
+        _writer.Dispose();
+
+        var rotatedFile = Path.Combine(_directory, RotatedLogFileName);
+        try
+        {
+            File.Delete(rotatedFile);
+            if (File.Exists(_currentFile))
+            {
+                File.Move(_currentFile, rotatedFile);
+            }
+        }
+        catch (IOException)
+        {
+        }
+        catch (UnauthorizedAccessException)
+        {
+        }
+
+        OpenFile();
+    }
+}
+
+internal sealed class FileLogger(FileLoggerProvider provider, string category) : ILogger
+{
+    public IDisposable? BeginScope<TState>(TState state) where TState : notnull => null;
+
+    public bool IsEnabled(LogLevel logLevel) => logLevel >= LogLevel.Trace;
+
+    public void Log<TState>(
+        LogLevel logLevel,
+        EventId eventId,
+        TState state,
+        Exception? exception,
+        Func<TState, Exception?, string> formatter)
+    {
+        if (!IsEnabled(logLevel))
+        {
+            return;
+        }
+
+        var message = formatter(state, exception);
+        if (exception is not null)
+        {
+            message += Environment.NewLine + exception;
+        }
+
+        provider.WriteLog(DateTime.Now, logLevel, category, message);
+    }
+}