improvements mid may 2025 (#24)

* General improvements and bug fixes.

* Improve tests coverage.

* fixup! Improve tests coverage.

* Update README.md with latest changes.

* Fix the uint32

* Resolve issue with race condition for logging.

* fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* Fix the test of the rate limiter

* Add default ratelimit.json file

* Update dependencies.

* Significant refactor.

* fixup! Significant refactor.

* fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

* fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! fixup! Merge remote-tracking branch 'origin/main' into improvements-mid-apr-2025

logging/logger.go

@@ -42,6 +42,7 @@ type Logger struct {
 	timeFormat  string
 	minLogLevel int
 	showCaller  bool
+	mu          sync.Mutex // Mutex to protect concurrent access to output
 }
 
 // LogMessage represents a log message with optional pairs.
@@ -82,7 +83,9 @@ func New() *Logger {
 
 // SetOutput sets the output destination for the logger.
 func (l *Logger) SetOutput(output io.Writer) *Logger {
+	l.mu.Lock()
 	l.output = output
+	l.mu.Unlock()
 	return l
 }
 
@@ -150,8 +153,11 @@ func (l *Logger) log(level int, m *LogMessage) {
 		fmt.Fprintln(os.Stderr, "Error marshalling log message:", err)
 		return
 	}
-
+	// Lock the mutex before writing to the output to prevent race conditions
+	l.mu.Lock()
 	_, err = l.output.Write(buffer.Bytes())
+	l.mu.Unlock()
+
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "Error writing log message:", err)
 	}

logging/logger_race_test.go

@@ -0,0 +1,54 @@
+package libpack_logger
+
+import (
+	"bytes"
+	"sync"
+	"testing"
+)
+
+// Test_LogConcurrentAccess verifies that the logger correctly handles concurrent access
+// without race conditions
+func TestLogConcurrentAccess(t *testing.T) {
+	output := &bytes.Buffer{}
+	logger := New().SetOutput(output).SetMinLogLevel(LEVEL_DEBUG)
+
+	// Number of concurrent goroutines
+	numGoroutines := 100
+	// Wait group to synchronize goroutines
+	var wg sync.WaitGroup
+	wg.Add(numGoroutines)
+
+	// Launch multiple goroutines to log concurrently
+	for i := 0; i < numGoroutines; i++ {
+		go func(id int) {
+			defer wg.Done()
+			msg := &LogMessage{
+				Message: "concurrent log test",
+				Pairs: map[string]interface{}{
+					"goroutine_id": id,
+				},
+			}
+			// Use different log levels to test all paths
+			switch id % 5 {
+			case 0:
+				logger.Debug(msg)
+			case 1:
+				logger.Info(msg)
+			case 2:
+				logger.Warn(msg)
+			case 3:
+				logger.Error(msg)
+			case 4:
+				logger.Fatal(msg)
+			}
+		}(i)
+	}
+
+	// Wait for all goroutines to complete
+	wg.Wait()
+
+	// If we make it here without a race detector failure, the test passes
+	if output.Len() == 0 {
+		t.Error("Expected log output, but got none")
+	}
+}