39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
package utils
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import (
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"context"
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"fmt"
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"time"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp"
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sdkmetric "go.opentelemetry.io/otel/sdk/metric"
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"go.opentelemetry.io/otel/sdk/resource"
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semconv "go.opentelemetry.io/otel/semconv/v1.20.0"
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)
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func NewMeter(svcName string) error {
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// create otlp exporter, notice that here we are using insecure option
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// because we just want to export the trace locally, also notice that
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// here we don't set any endpoint because by default the otel will load
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// the endpoint from the environment variable `OTEL_EXPORTER_OTLP_ENDPOINT`
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exporter, err := otlpmetrichttp.New(
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context.Background(),
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)
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if err != nil {
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return fmt.Errorf("unable to initialize exporter due: %w", err)
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}
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// initialize tracer provider
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tp := sdkmetric.NewMeterProvider(
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sdkmetric.WithReader(sdkmetric.NewPeriodicReader(exporter, sdkmetric.WithInterval(30*time.Second))),
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sdkmetric.WithResource(resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String(svcName),
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)),
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)
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// set tracer provider and propagator properly, this is to ensure all
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// instrumentation library could run well
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otel.SetMeterProvider(tp)
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return nil
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}
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