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tracer.go
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/
tracer.go
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package tracer
import (
"github.com/opentracing/opentracing-go"
"github.com/uber/jaeger-client-go"
"io"
"github.com/alexeykirinyuk/go-product-api/internal/config"
"github.com/rs/zerolog/log"
jaegercfg "github.com/uber/jaeger-client-go/config"
)
// NewTracer - returns new tracer.
func NewTracer(cfg *config.Config) (io.Closer, error) {
cfgTracer := &jaegercfg.Configuration{
ServiceName: cfg.Jaeger.Service,
Sampler: &jaegercfg.SamplerConfig{
Type: jaeger.SamplerTypeConst,
Param: 1,
},
Reporter: &jaegercfg.ReporterConfig{
LogSpans: true,
LocalAgentHostPort: cfg.Jaeger.Host + cfg.Jaeger.Port,
},
}
tracer, closer, err := cfgTracer.NewTracer(jaegercfg.Logger(jaeger.StdLogger))
if err != nil {
log.Err(err).Msgf("failed init jaeger: %v", err)
return nil, err
}
opentracing.SetGlobalTracer(tracer)
log.Info().Msgf("Traces started")
return closer, nil
}