package tracer import ( "context" "go.unistack.org/micro/v4/options" "go.unistack.org/micro/v4/util/id" ) var _ Tracer = (*noopTracer)(nil) type noopTracer struct { opts Options spans []Span } func (t *noopTracer) Spans() []Span { return t.spans } func (t *noopTracer) Start(ctx context.Context, name string, opts ...options.Option) (context.Context, Span) { options := NewSpanOptions(opts...) span := &noopSpan{ name: name, ctx: ctx, tracer: t, kind: options.Kind, } span.spanID.s, _ = id.New() span.traceID.s, _ = id.New() if span.ctx == nil { span.ctx = context.Background() } t.spans = append(t.spans, span) return NewSpanContext(ctx, span), span } func (t *noopTracer) Flush(_ context.Context) error { return nil } func (t *noopTracer) Init(opts ...options.Option) error { for _, o := range opts { o(&t.opts) } return nil } func (t *noopTracer) Name() string { return t.opts.Name } type noopStringer struct { s string } func (s noopStringer) String() string { return s.s } type noopSpan struct { ctx context.Context tracer Tracer name string statusMsg string traceID noopStringer spanID noopStringer kind SpanKind status SpanStatus } func (s *noopSpan) Finish(_ ...options.Option) { } func (s *noopSpan) Context() context.Context { return s.ctx } func (s *noopSpan) Tracer() Tracer { return s.tracer } func (s *noopSpan) AddEvent(_ string, _ ...options.Option) { } func (s *noopSpan) SetName(name string) { s.name = name } func (s *noopSpan) AddLogs(_ ...interface{}) { } func (s *noopSpan) AddLabels(_ ...interface{}) { } func (s *noopSpan) Kind() SpanKind { return s.kind } func (s *noopSpan) TraceID() string { return s.traceID.String() } func (s *noopSpan) SpanID() string { return s.spanID.String() } func (s *noopSpan) Status() (SpanStatus, string) { return s.status, s.statusMsg } func (s *noopSpan) SetStatus(st SpanStatus, msg string) { s.status = st s.statusMsg = msg } // NewTracer returns new memory tracer func NewTracer(opts ...options.Option) Tracer { return &noopTracer{ opts: NewOptions(opts...), } }