feat: add independent platform modules and multi-provider storage

logx/logx.go

@@ -21,14 +21,14 @@ import (
 // standard stream. File takes precedence over Output and appends to the named
 // file.
 type Config struct {
-	Level       string
-	Format      string
-	Output      string
-	File        string
-	Service     string
-	Environment string
-	AddSource   bool
-	Writer      io.Writer
+	Level       string    `json:"level"`
+	Format      string    `json:"format"`
+	Output      string    `json:"output"`
+	File        string    `json:"file"`
+	Service     string    `json:"service"`
+	Environment string    `json:"environment"`
+	AddSource   bool      `json:"addSource"`
+	Writer      io.Writer `json:"-"`
 }
 
 // Default returns the default production-friendly logger configuration.
@@ -45,6 +45,7 @@ func Default() Config {
 type Logger struct {
 	logger *slog.Logger
 	closer *closeState
+	level  *slog.LevelVar
 }
 
 type closeState struct {
@@ -78,7 +79,9 @@ func New(cfg Config) (*Logger, error) {
 		return nil, err
 	}
 
-	opts := &slog.HandlerOptions{Level: level, AddSource: cfg.AddSource}
+	dynamicLevel := new(slog.LevelVar)
+	dynamicLevel.Set(level)
+	opts := &slog.HandlerOptions{Level: dynamicLevel, AddSource: cfg.AddSource}
 	var handler slog.Handler
 	if cfg.Format == "text" {
 		handler = slog.NewTextHandler(writer, opts)
@@ -97,7 +100,7 @@ func New(cfg Config) (*Logger, error) {
 	if closeWriter != nil {
 		closer = &closeState{fn: closeWriter}
 	}
-	return &Logger{logger: logger, closer: closer}, nil
+	return &Logger{logger: logger, closer: closer, level: dynamicLevel}, nil
 }
 
 // Setup replaces the process-wide logger used by the package-level helpers.
@@ -152,14 +155,27 @@ func (l *Logger) With(args ...any) *Logger {
 	if l == nil || l.logger == nil {
 		return defaultLogger.Load().With(args...)
 	}
-	return &Logger{logger: l.logger.With(args...), closer: l.closer}
+	return &Logger{logger: l.logger.With(args...), closer: l.closer, level: l.level}
 }
 
 func (l *Logger) WithGroup(name string) *Logger {
 	if l == nil || l.logger == nil {
 		return defaultLogger.Load().WithGroup(name)
 	}
-	return &Logger{logger: l.logger.WithGroup(name), closer: l.closer}
+	return &Logger{logger: l.logger.WithGroup(name), closer: l.closer, level: l.level}
+}
+
+// SetLevel atomically changes the threshold shared by this logger and children.
+func (l *Logger) SetLevel(value string) error {
+	if l == nil || l.level == nil {
+		return errors.New("logx: logger does not support dynamic levels")
+	}
+	level, err := parseLevel(value)
+	if err != nil {
+		return err
+	}
+	l.level.Set(level)
+	return nil
 }
 
 // Close releases resources owned by the root logger. It is safe to call more