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Fix <nil> tracer value in KV

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Michael 2018-02-23 11:16:03 +01:00 committed by Traefiker Bot
parent e28ebf1c62
commit 088b8fb348
1 changed files with 19 additions and 4 deletions
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23
middlewares/tracing/tracing.go
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@ -19,10 +19,25 @@ type Tracing struct {
Jaeger *jaeger.Config `description:"Settings for jaeger"` Jaeger *jaeger.Config `description:"Settings for jaeger"`
Zipkin *zipkin.Config `description:"Settings for zipkin"` Zipkin *zipkin.Config `description:"Settings for zipkin"`
opentracing.Tracer tracer opentracing.Tracer
closer io.Closer closer io.Closer
} }
// StartSpan delegates to opentracing.Tracer
func (t *Tracing) StartSpan(operationName string, opts ...opentracing.StartSpanOption) opentracing.Span {
return t.tracer.StartSpan(operationName, opts...)
}
// Inject delegates to opentracing.Tracer
func (t *Tracing) Inject(sm opentracing.SpanContext, format interface{}, carrier interface{}) error {
return t.tracer.Inject(sm, format, carrier)
}
// Extract delegates to opentracing.Tracer
func (t *Tracing) Extract(format interface{}, carrier interface{}) (opentracing.SpanContext, error) {
return t.tracer.Extract(format, carrier)
}
// Backend describes things we can use to setup tracing // Backend describes things we can use to setup tracing
type Backend interface { type Backend interface {
Setup(serviceName string) (opentracing.Tracer, io.Closer, error) Setup(serviceName string) (opentracing.Tracer, io.Closer, error)
@ -34,9 +49,9 @@ func (t *Tracing) Setup() {
switch t.Backend { switch t.Backend {
case jaeger.Name: case jaeger.Name:
t.Tracer, t.closer, err = t.Jaeger.Setup(t.ServiceName) t.tracer, t.closer, err = t.Jaeger.Setup(t.ServiceName)
case zipkin.Name: case zipkin.Name:
t.Tracer, t.closer, err = t.Zipkin.Setup(t.ServiceName) t.tracer, t.closer, err = t.Zipkin.Setup(t.ServiceName)
default: default:
log.Warnf("Unknown tracer %q", t.Backend) log.Warnf("Unknown tracer %q", t.Backend)
return return
@ -49,7 +64,7 @@ func (t *Tracing) Setup() {
// IsEnabled determines if tracing was successfully activated // IsEnabled determines if tracing was successfully activated
func (t *Tracing) IsEnabled() bool { func (t *Tracing) IsEnabled() bool {
if t == nil || t.Tracer == nil { if t == nil || t.tracer == nil {
return false return false
} }
return true return true