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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package xrayconfig // import "go.opentelemetry.io/contrib/instrumentation/github.com/aws/aws-lambda-go/otellambda/xrayconfig"
import (
"context"
"os"
lambdadetector "go.opentelemetry.io/contrib/detectors/aws/lambda"
"go.opentelemetry.io/contrib/instrumentation/github.com/aws/aws-lambda-go/otellambda"
"go.opentelemetry.io/contrib/propagators/aws/xray"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
"go.opentelemetry.io/otel/propagation"
sdktrace "go.opentelemetry.io/otel/sdk/trace" //nolint:depguard // NewTracerProvider requires the SDK
)
func xrayEventToCarrier([]byte) propagation.TextMapCarrier {
xrayTraceID := os.Getenv("_X_AMZN_TRACE_ID")
return propagation.HeaderCarrier{"X-Amzn-Trace-Id": []string{xrayTraceID}}
}
// NewTracerProvider returns a TracerProvider configured with an exporter,
// ID generator, and lambda resource detector to send trace data to AWS X-Ray
// via a Collector instance listening on localhost.
func NewTracerProvider(ctx context.Context) (*sdktrace.TracerProvider, error) {
exp, err := otlptracegrpc.New(ctx, otlptracegrpc.WithInsecure())
if err != nil {
return nil, err
}
detector := lambdadetector.NewResourceDetector()
resource, err := detector.Detect(ctx)
if err != nil {
return nil, err
}
return sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exp),
sdktrace.WithIDGenerator(xray.NewIDGenerator()),
sdktrace.WithResource(resource),
), nil
}
// WithEventToCarrier returns an otellambda.Option to enable
// an otellambda.EventToCarrier function which reads the XRay trace
// information from the environment and returns this information in
// a propagation.HeaderCarrier.
func WithEventToCarrier() otellambda.Option {
return otellambda.WithEventToCarrier(xrayEventToCarrier)
}
// WithPropagator returns an otellambda.Option to enable the xray.Propagator.
func WithPropagator() otellambda.Option {
return otellambda.WithPropagator(xray.Propagator{})
}
// WithRecommendedOptions returns a list of all otellambda.Option(s)
// recommended for the otellambda package when using AWS XRay.
func WithRecommendedOptions(tp *sdktrace.TracerProvider) []otellambda.Option {
return []otellambda.Option{WithEventToCarrier(), WithPropagator(), otellambda.WithTracerProvider(tp), otellambda.WithFlusher(tp)}
}
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