micro/tracer/memory/memory.go

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package memory
import (
"context"
"time"
"go.unistack.org/micro/v3/tracer"
"go.unistack.org/micro/v3/util/id"
)
var _ tracer.Tracer = (*Tracer)(nil)
type Tracer struct {
opts tracer.Options
spans []tracer.Span
}
func (t *Tracer) Spans() []tracer.Span {
return t.spans
}
func (t *Tracer) Start(ctx context.Context, name string, opts ...tracer.SpanOption) (context.Context, tracer.Span) {
options := tracer.NewSpanOptions(opts...)
span := &Span{
name: name,
ctx: ctx,
tracer: t,
kind: options.Kind,
startTime: time.Now(),
}
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 tracer.NewSpanContext(ctx, span), span
}
func (t *Tracer) Flush(_ context.Context) error {
return nil
}
func (t *Tracer) Init(opts ...tracer.Option) error {
for _, o := range opts {
o(&t.opts)
}
return nil
}
func (t *Tracer) Name() string {
return t.opts.Name
}
type noopStringer struct {
s string
}
func (s noopStringer) String() string {
return s.s
}
type Span struct {
ctx context.Context
tracer tracer.Tracer
name string
statusMsg string
startTime time.Time
finishTime time.Time
traceID noopStringer
spanID noopStringer
events []*Event
labels []interface{}
logs []interface{}
kind tracer.SpanKind
status tracer.SpanStatus
}
func (s *Span) Finish(_ ...tracer.SpanOption) {
s.finishTime = time.Now()
}
func (s *Span) Context() context.Context {
return s.ctx
}
func (s *Span) Tracer() tracer.Tracer {
return s.tracer
}
type Event struct {
name string
labels []interface{}
}
func (s *Span) AddEvent(name string, opts ...tracer.EventOption) {
options := tracer.NewEventOptions(opts...)
s.events = append(s.events, &Event{name: name, labels: options.Labels})
}
func (s *Span) SetName(name string) {
s.name = name
}
func (s *Span) AddLogs(kv ...interface{}) {
s.logs = append(s.logs, kv...)
}
func (s *Span) AddLabels(kv ...interface{}) {
s.labels = append(s.labels, kv...)
}
func (s *Span) Kind() tracer.SpanKind {
return s.kind
}
func (s *Span) TraceID() string {
return s.traceID.String()
}
func (s *Span) SpanID() string {
return s.spanID.String()
}
func (s *Span) Status() (tracer.SpanStatus, string) {
return s.status, s.statusMsg
}
func (s *Span) SetStatus(st tracer.SpanStatus, msg string) {
s.status = st
s.statusMsg = msg
}
// NewTracer returns new memory tracer
func NewTracer(opts ...tracer.Option) *Tracer {
return &Tracer{
opts: tracer.NewOptions(opts...),
}
}