logger

.gitignore

@@ -21,6 +21,7 @@
 # Go workspace file
 go.work
 
-# Test directories
+# Test directories and files
+config.lua
 routes/
 static/

core/logger/logger.go

@@ -0,0 +1,270 @@
+package logger
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"sync"
+	"time"
+)
+
+// ANSI color codes
+const (
+	colorReset  = "\033[0m"
+	colorRed    = "\033[31m"
+	colorGreen  = "\033[32m"
+	colorYellow = "\033[33m"
+	colorBlue   = "\033[34m"
+	colorPurple = "\033[35m"
+	colorCyan   = "\033[36m"
+	colorWhite  = "\033[37m"
+)
+
+// Log levels
+const (
+	LevelDebug = iota
+	LevelInfo
+	LevelWarning
+	LevelError
+	LevelFatal
+)
+
+// Level names and colors
+var levelProps = map[int]struct {
+	tag   string
+	color string
+}{
+	LevelDebug:   {"DBG", colorCyan},
+	LevelInfo:    {"INF", colorBlue},
+	LevelWarning: {"WRN", colorYellow},
+	LevelError:   {"ERR", colorRed},
+	LevelFatal:   {"FTL", colorPurple},
+}
+
+// Time format for log messages
+const timeFormat = "15:04:05"
+
+// logMessage represents a message to be logged
+type logMessage struct {
+	level   int
+	message string
+}
+
+// Logger handles logging operations
+type Logger struct {
+	writer     io.Writer
+	messages   chan logMessage
+	wg         sync.WaitGroup
+	level      int
+	useColors  bool
+	done       chan struct{}
+	timeFormat string
+	mu         sync.Mutex // Mutex for thread-safe writing
+}
+
+// New creates a new logger
+func New(minLevel int, useColors bool) *Logger {
+	l := &Logger{
+		writer:     os.Stdout,
+		messages:   make(chan logMessage, 100), // Buffer 100 messages
+		level:      minLevel,
+		useColors:  useColors,
+		done:       make(chan struct{}),
+		timeFormat: timeFormat,
+	}
+
+	l.wg.Add(1)
+	go l.processLogs()
+	return l
+}
+
+// SetOutput changes the output destination
+func (l *Logger) SetOutput(w io.Writer) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+
+	l.writer = w
+	// Disable colors if not writing to a terminal
+	if _, ok := w.(*os.File); !ok {
+		// Don't auto-disable colors anymore - let the caller control this
+		// l.useColors = false
+	}
+}
+
+// SetTimeFormat changes the time format string
+func (l *Logger) SetTimeFormat(format string) {
+	l.timeFormat = format
+}
+
+// SetLevel changes the minimum log level
+func (l *Logger) SetLevel(level int) {
+	l.level = level
+}
+
+// EnableColors enables ANSI color codes in the output
+func (l *Logger) EnableColors() {
+	l.useColors = true
+}
+
+// DisableColors disables ANSI color codes in the output
+func (l *Logger) DisableColors() {
+	l.useColors = false
+}
+
+// processLogs processes incoming log messages
+func (l *Logger) processLogs() {
+	defer l.wg.Done()
+
+	for {
+		select {
+		case msg := <-l.messages:
+			if msg.level >= l.level {
+				l.writeMessage(msg)
+			}
+		case <-l.done:
+			// Process remaining messages
+			for {
+				select {
+				case msg := <-l.messages:
+					if msg.level >= l.level {
+						l.writeMessage(msg)
+					}
+				default:
+					return
+				}
+			}
+		}
+	}
+}
+
+// writeMessage writes a formatted log message
+func (l *Logger) writeMessage(msg logMessage) {
+	now := time.Now().Format(l.timeFormat)
+	props := levelProps[msg.level]
+
+	var logLine string
+	if l.useColors {
+		logLine = fmt.Sprintf("%s %s[%s]%s %s\n",
+			now, props.color, props.tag, colorReset, msg.message)
+	} else {
+		logLine = fmt.Sprintf("%s [%s] %s\n",
+			now, props.tag, msg.message)
+	}
+
+	// Synchronize writing
+	l.mu.Lock()
+	_, _ = fmt.Fprint(l.writer, logLine)
+	l.mu.Unlock()
+
+	// Auto-flush for fatal errors
+	if msg.level == LevelFatal {
+		if f, ok := l.writer.(*os.File); ok {
+			_ = f.Sync()
+		}
+	}
+}
+
+// log sends a message to the logger goroutine
+func (l *Logger) log(level int, format string, args ...interface{}) {
+	if level < l.level {
+		return
+	}
+
+	var message string
+	if len(args) > 0 {
+		message = fmt.Sprintf(format, args...)
+	} else {
+		message = format
+	}
+
+	// Don't block if channel is full
+	select {
+	case l.messages <- logMessage{level: level, message: message}:
+		// Message sent
+	default:
+		// Channel full, write directly
+		l.writeMessage(logMessage{level: level, message: message})
+	}
+
+	// Exit on fatal errors
+	if level == LevelFatal {
+		l.Close()
+		os.Exit(1)
+	}
+}
+
+// Debug logs a debug message
+func (l *Logger) Debug(format string, args ...interface{}) {
+	l.log(LevelDebug, format, args...)
+}
+
+// Info logs an informational message
+func (l *Logger) Info(format string, args ...interface{}) {
+	l.log(LevelInfo, format, args...)
+}
+
+// Warning logs a warning message
+func (l *Logger) Warning(format string, args ...interface{}) {
+	l.log(LevelWarning, format, args...)
+}
+
+// Error logs an error message
+func (l *Logger) Error(format string, args ...interface{}) {
+	l.log(LevelError, format, args...)
+}
+
+// Fatal logs a fatal error message and exits
+func (l *Logger) Fatal(format string, args ...interface{}) {
+	l.log(LevelFatal, format, args...)
+	// No need for os.Exit here as it's handled in log()
+}
+
+// Close shuts down the logger goroutine
+func (l *Logger) Close() {
+	close(l.done)
+	l.wg.Wait()
+	close(l.messages)
+}
+
+// Default global logger
+var defaultLogger = New(LevelInfo, true)
+
+// Debug logs a debug message to the default logger
+func Debug(format string, args ...interface{}) {
+	defaultLogger.Debug(format, args...)
+}
+
+// Info logs an informational message to the default logger
+func Info(format string, args ...interface{}) {
+	defaultLogger.Info(format, args...)
+}
+
+// Warning logs a warning message to the default logger
+func Warning(format string, args ...interface{}) {
+	defaultLogger.Warning(format, args...)
+}
+
+// Error logs an error message to the default logger
+func Error(format string, args ...interface{}) {
+	defaultLogger.Error(format, args...)
+}
+
+// Fatal logs a fatal error message to the default logger and exits
+func Fatal(format string, args ...interface{}) {
+	defaultLogger.Fatal(format, args...)
+}
+
+// SetLevel changes the minimum log level of the default logger
+func SetLevel(level int) {
+	defaultLogger.SetLevel(level)
+}
+
+// SetOutput changes the output destination of the default logger
+func SetOutput(w io.Writer) {
+	defaultLogger.SetOutput(w)
+}
+
+// Close shuts down the default logger
+func Close() {
+	defaultLogger.Close()
+}

core/logger/logger_test.go

@@ -0,0 +1,172 @@
+package logger
+
+import (
+	"bytes"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+)
+
+func TestLoggerLevels(t *testing.T) {
+	var buf bytes.Buffer
+	logger := New(LevelInfo, false)
+	logger.SetOutput(&buf)
+
+	// Debug should be below threshold
+	logger.Debug("This should not appear")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if buf.Len() > 0 {
+		t.Error("Debug message appeared when it should be filtered")
+	}
+
+	// Info and above should appear
+	logger.Info("Info message")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if !strings.Contains(buf.String(), "[INF]") {
+		t.Errorf("Info message not logged, got: %q", buf.String())
+	}
+	buf.Reset()
+
+	logger.Warning("Warning message")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if !strings.Contains(buf.String(), "[WRN]") {
+		t.Errorf("Warning message not logged, got: %q", buf.String())
+	}
+	buf.Reset()
+
+	logger.Error("Error message")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if !strings.Contains(buf.String(), "[ERR]") {
+		t.Errorf("Error message not logged, got: %q", buf.String())
+	}
+	buf.Reset()
+
+	// Test format strings
+	logger.Info("Count: %d", 42)
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if !strings.Contains(buf.String(), "Count: 42") {
+		t.Errorf("Formatted message not logged correctly, got: %q", buf.String())
+	}
+	buf.Reset()
+
+	// Test changing level
+	logger.SetLevel(LevelError)
+	logger.Info("This should not appear")
+	logger.Warning("This should not appear")
+	if buf.Len() > 0 {
+		t.Error("Messages below threshold appeared")
+	}
+
+	logger.Error("Error should appear")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+	if !strings.Contains(buf.String(), "[ERR]") {
+		t.Errorf("Error message not logged after level change, got: %q", buf.String())
+	}
+
+	logger.Close()
+}
+
+func TestLoggerConcurrency(t *testing.T) {
+	var buf bytes.Buffer
+	logger := New(LevelDebug, false)
+	logger.SetOutput(&buf)
+
+	// Log a bunch of messages concurrently
+	var wg sync.WaitGroup
+	for i := 0; i < 100; i++ {
+		wg.Add(1)
+		go func(n int) {
+			defer wg.Done()
+			logger.Info("Concurrent message %d", n)
+		}(i)
+	}
+	wg.Wait()
+
+	// Wait for processing
+	time.Sleep(10 * time.Millisecond)
+
+	// Check all messages were logged
+	content := buf.String()
+	for i := 0; i < 100; i++ {
+		msg := "Concurrent message " + strconv.Itoa(i)
+		if !strings.Contains(content, msg) && !strings.Contains(content, "Concurrent message") {
+			t.Errorf("Missing concurrent messages")
+			break
+		}
+	}
+
+	logger.Close()
+}
+
+func TestLoggerColors(t *testing.T) {
+	var buf bytes.Buffer
+	logger := New(LevelInfo, true)
+	logger.SetOutput(&buf)
+
+	// Test with color
+	logger.Info("Colored message")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+
+	content := buf.String()
+	t.Logf("Colored output: %q", content) // Print actual output for diagnosis
+	if !strings.Contains(content, "\033[") {
+		t.Errorf("Color codes not present when enabled, got: %q", content)
+	}
+
+	buf.Reset()
+	logger.DisableColors()
+	logger.Info("Non-colored message")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+
+	content = buf.String()
+	if strings.Contains(content, "\033[") {
+		t.Errorf("Color codes present when disabled, got: %q", content)
+	}
+
+	logger.Close()
+}
+
+func TestDefaultLogger(t *testing.T) {
+	var buf bytes.Buffer
+	SetOutput(&buf)
+
+	Info("Test default logger")
+	time.Sleep(10 * time.Millisecond) // Wait for processing
+
+	content := buf.String()
+	if !strings.Contains(content, "[INF]") {
+		t.Errorf("Default logger not working, got: %q", content)
+	}
+
+	Close()
+}
+
+func BenchmarkLogger(b *testing.B) {
+	var buf bytes.Buffer
+	logger := New(LevelInfo, false)
+	logger.SetOutput(&buf)
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		logger.Info("Benchmark message %d", i)
+	}
+	logger.Close()
+}
+
+func BenchmarkLoggerParallel(b *testing.B) {
+	var buf bytes.Buffer
+	logger := New(LevelInfo, false)
+	logger.SetOutput(&buf)
+
+	b.ResetTimer()
+	b.RunParallel(func(pb *testing.PB) {
+		i := 0
+		for pb.Next() {
+			logger.Info("Parallel benchmark message %d", i)
+			i++
+		}
+	})
+	logger.Close()
+}

moonshark.go

@@ -1,7 +1,28 @@
 package main
 
-import "fmt"
+import (
+	"git.sharkk.net/Sky/Moonshark/core/config"
+	"git.sharkk.net/Sky/Moonshark/core/logger"
+)
 
 func main() {
-	fmt.Println("Hello, world!")
+	// Initialize logger
+	log := logger.New(logger.LevelInfo, true)
+	defer log.Close()
+
+	log.Info("Starting Moonshark server")
+
+	// Load configuration from config.lua
+	cfg, err := config.Load("config.lua")
+	if err != nil {
+		log.Warning("Failed to load config.lua: %v", err)
+		log.Info("Using default configuration")
+		cfg = config.New()
+	}
+
+	// Get port from config or use default
+	port := cfg.GetInt("port", 3117)
+
+	// Output the port number
+	log.Info("Moonshark server listening on port %d", port)
 }