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