/
config.go
77 lines (65 loc) · 2.04 KB
/
config.go
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package main
import (
"context"
"log"
"os"
"time"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
otgrpc "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/sdk/resource"
sdk "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
)
const serviceVersion = "v1.0.0"
func ConfigureOpentelemetry(ctx context.Context) func() {
exp, err := newGRPCExporter(ctx)
if err != nil {
log.Fatalf("failed to initialize exporter: %v", err)
}
tp := newTraceProvider(exp)
otel.SetTracerProvider(tp)
// Register the trace context and baggage propagators
// so data is propagated across services/processes.
otel.SetTextMapPropagator(
// W3C Trace Context propagator
propagation.NewCompositeTextMapPropagator(
propagation.TraceContext{},
propagation.Baggage{},
),
)
return func() {
// Handle this error in a sensible manner where possible.
_ = tp.Shutdown(ctx)
}
}
func newGRPCExporter(ctx context.Context) (*otlptrace.Exporter, error) {
opts := []otgrpc.Option{
otgrpc.WithEndpoint(os.Getenv("OTEL_EXPORTER_OTLP_TRACES_ENDPOINT")),
otgrpc.WithInsecure(),
otgrpc.WithTimeout(5 * time.Second),
}
client := otgrpc.NewClient(opts...)
return otlptrace.New(ctx, client)
}
// Create a new tracer provider with a batch span processor and the otlp exporter.
func newTraceProvider(exp *otlptrace.Exporter) *sdk.TracerProvider {
// service.name attribute is required.
r, _ := resource.Merge(
resource.Default(),
resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceNameKey.String(os.Getenv("SERVICE_NAME")),
semconv.ServiceVersionKey.String(serviceVersion),
semconv.TelemetrySDKVersionKey.String("v1.12.0"),
semconv.TelemetrySDKLanguageGo,
attribute.String("environment", "demo"),
),
)
return sdk.NewTracerProvider(
sdk.WithSampler(sdk.AlwaysSample()),
sdk.WithResource(r),
sdk.WithSpanProcessor(sdk.NewBatchSpanProcessor(exp)))
}