/
jaeger.go
71 lines (62 loc) · 1.56 KB
/
jaeger.go
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package tracing
import (
"fmt"
"github.com/opentracing/opentracing-go"
"github.com/sirupsen/logrus"
"github.com/uber/jaeger-client-go"
jaegercfg "github.com/uber/jaeger-client-go/config"
)
// TracerProvider enum
type Provider int
const (
// Jaeger provider
Jaeger Provider = iota
// Zipkin provider
Zipkin
)
// TracerConfig for tracer
type TracerConfig struct {
Provider Provider
ServiceName string
Host string
Port string
}
// NewTracer via TracerConfig, returns opentracing.Tracer
func NewTracer(cfg TracerConfig) opentracing.Tracer {
var tracer opentracing.Tracer
switch cfg.Provider {
case Zipkin:
logrus.Error("No implements yet.")
// fmt.Sprintf("http://%s:%s/api/v1/spans",cfg.Host, cfg.Port)
break
case Jaeger:
tracer = newJaegerTracer(cfg)
break
default:
logrus.Errorf("unsported provider %s, use opentracing.GlobalTracer()", cfg.Provider)
tracer = opentracing.GlobalTracer()
}
return tracer
}
func newJaegerTracer(tc TracerConfig) opentracing.Tracer {
cfg := jaegercfg.Configuration{
ServiceName: tc.ServiceName,
Sampler: &jaegercfg.SamplerConfig{
Type: jaeger.SamplerTypeConst,
Param: 1,
},
Reporter: &jaegercfg.ReporterConfig{
LogSpans: true,
LocalAgentHostPort: fmt.Sprintf("%s:%s", tc.Host, tc.Port),
},
}
logrus.Infof("Using Jaeger HTTP tracer: %s", fmt.Sprintf("%s:%s", tc.Host, tc.Port))
tracer, _, err := cfg.NewTracer()
if err != nil {
logrus.Fatalf("unable to create Jaeger tracer: %+v", err)
}
if tracer == nil {
tracer = opentracing.GlobalTracer()
}
return tracer
}