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sdkUtils.go
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sdkUtils.go
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/*
Copyright 2021 The CloudEvents Authors
SPDX-License-Identifier: Apache-2.0
*/
package instrumentation
import (
"context"
"log"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/jaeger"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
)
const (
JaegerEndpoint = "http://localhost:14268/api/traces"
)
func InitOTelSdk(serviceName string) func() {
ctx := context.Background()
exp, err := jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(JaegerEndpoint)))
if err != nil {
return func() { log.Printf("Failed to create the trace exporter: %v", err) }
}
tp := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exp),
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithResource(resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceNameKey.String(serviceName),
)),
)
otel.SetTracerProvider(tp)
otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
return func() {
if tp == nil {
return
}
if err := tp.Shutdown(ctx); err != nil {
log.Printf("Error shutting down the tracer provider: %v", err)
}
}
}