logger/slog: initial import

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

logger/noop.go

@@ -0,0 +1,90 @@
+package logger
+
+import (
+	"context"
+)
+
+type noopLogger struct {
+	opts Options
+}
+
+func NewLogger(opts ...Option) Logger {
+	options := NewOptions(opts...)
+	return &noopLogger{opts: options}
+}
+
+func (l *noopLogger) V(lvl Level) bool {
+	return false
+}
+
+func (l *noopLogger) Level(lvl Level) {
+}
+
+func (l *noopLogger) Init(opts ...Option) error {
+	for _, o := range opts {
+		o(&l.opts)
+	}
+	return nil
+}
+
+func (l *noopLogger) Clone(opts ...Option) Logger {
+	nl := &noopLogger{opts: l.opts}
+	for _, o := range opts {
+		o(&nl.opts)
+	}
+	return nl
+}
+
+func (l *noopLogger) Fields(attrs ...interface{}) Logger {
+	return l
+}
+
+func (l *noopLogger) Options() Options {
+	return l.opts
+}
+
+func (l *noopLogger) String() string {
+	return "noop"
+}
+
+func (l *noopLogger) Log(ctx context.Context, lvl Level, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Info(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Debug(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Error(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Trace(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Warn(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Fatal(ctx context.Context, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Logf(ctx context.Context, lvl Level, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Infof(ctx context.Context, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Debugf(ctx context.Context, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Errorf(ctx context.Context, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Tracef(ctx context.Context, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Warnf(ctx context.Context, msg string, attrs ...interface{}) {
+}
+
+func (l *noopLogger) Fatalf(ctx context.Context, msg string, attrs ...interface{}) {
+}