traefik/pkg/tracing/zipkin/zipkin.go
Ludovic Fernandez f1b085fa36 Move code to pkg
2019-03-15 09:42:03 +01:00

50 lines
1.5 KiB
Go

package zipkin
import (
"io"
"time"
"github.com/containous/traefik/pkg/log"
"github.com/opentracing/opentracing-go"
zipkin "github.com/openzipkin/zipkin-go-opentracing"
)
// Name sets the name of this tracer.
const Name = "zipkin"
// Config provides configuration settings for a zipkin tracer.
type Config struct {
HTTPEndpoint string `description:"HTTP Endpoint to report traces to." export:"false"`
SameSpan bool `description:"Use Zipkin SameSpan RPC style traces." export:"true"`
ID128Bit bool `description:"Use Zipkin 128 bit root span IDs." export:"true"`
Debug bool `description:"Enable Zipkin debug." export:"true"`
SampleRate float64 `description:"The rate between 0.0 and 1.0 of requests to trace." export:"true"`
}
// Setup sets up the tracer
func (c *Config) Setup(serviceName string) (opentracing.Tracer, io.Closer, error) {
collector, err := zipkin.NewHTTPCollector(c.HTTPEndpoint)
if err != nil {
return nil, nil, err
}
recorder := zipkin.NewRecorder(collector, c.Debug, "0.0.0.0:0", serviceName)
tracer, err := zipkin.NewTracer(
recorder,
zipkin.ClientServerSameSpan(c.SameSpan),
zipkin.TraceID128Bit(c.ID128Bit),
zipkin.DebugMode(c.Debug),
zipkin.WithSampler(zipkin.NewBoundarySampler(c.SampleRate, time.Now().Unix())),
)
if err != nil {
return nil, nil, err
}
// Without this, child spans are getting the NOOP tracer
opentracing.SetGlobalTracer(tracer)
log.WithoutContext().Debug("Zipkin tracer configured")
return tracer, collector, nil
}