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Opentelemetry tracer initilization
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package main | |
import ( | |
"context" | |
"crypto/tls" | |
"go.opentelemetry.io/otel" | |
"go.opentelemetry.io/otel/exporters/otlp/otlptrace" | |
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp" | |
"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" | |
) | |
// tracingConfig is used to configure the driver used to send traces to the Otel Collector | |
type tracingConfig struct { | |
CollectorAddress string | |
Environment string | |
ServiceName string | |
ServiceVersion string | |
} | |
var ( | |
// traceExporter exports trace data in the OTLP wire format. | |
traceExporter *otlptrace.Exporter | |
// tracerProvider holds a new and configured sdktrace.TracerProvider. | |
tracerProvider *sdktrace.TracerProvider | |
) | |
// initTracer initializes and configures a trace provider in order to generate traces and send them to a collector. | |
func initTracer(ctx context.Context, conf tracingConfig) error { | |
var err error | |
traceExporter, err = otlptracehttp.New(ctx, | |
otlptracehttp.WithTLSClientConfig( | |
&tls.Config{InsecureSkipVerify: true}, | |
), | |
otlptracehttp.WithEndpoint(conf.CollectorAddress), | |
otlptracehttp.WithCompression(otlptracehttp.GzipCompression), | |
) | |
if err != nil { | |
return err | |
} | |
res, err := resource.New(ctx, | |
resource.WithAttributes( | |
semconv.ServiceNameKey.String(conf.ServiceName), | |
semconv.DeploymentEnvironmentKey.String(conf.Environment), | |
semconv.ServiceVersionKey.String(conf.ServiceVersion), | |
), | |
) | |
if err != nil { | |
return err | |
} | |
bsp := sdktrace.NewBatchSpanProcessor(traceExporter) | |
tracerProvider = sdktrace.NewTracerProvider( | |
sdktrace.WithSampler(sdktrace.AlwaysSample()), | |
sdktrace.WithResource(res), | |
sdktrace.WithSpanProcessor(bsp), | |
) | |
otel.SetTracerProvider(tracerProvider) | |
otel.SetTextMapPropagator( | |
propagation.NewCompositeTextMapPropagator( | |
propagation.TraceContext{}, | |
propagation.Baggage{}, | |
)) | |
return nil | |
} |
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