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#!/usr/bin/env python3
"""Test script to verify OpenTelemetry W3C Trace Context header injection."""
from opentelemetry.trace.propagation.tracecontext import TraceContextTextMapPropagator
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider
# Setup tracer
provider = TracerProvider()
trace.set_tracer_provider(provider)
tracer = trace.get_tracer('test')
# Create span and inject headers
headers = {}
with tracer.start_as_current_span('test-span'):
TraceContextTextMapPropagator().inject(headers)
print("Headers injected by OpenTelemetry:")
for key, value in headers.items():
print(f" {key}: {value}")
if not headers:
print(" (no headers - check if span is current)")
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