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feat: propagate W3C baggage headers into OTel context #124

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feat: propagate W3C baggage headers into OTel context #124

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4 changes: 4 additions & 0 deletions src/sap_cloud_sdk/core/telemetry/middleware/starlette_a2a.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@
import logging
from contextvars import ContextVar
from typing import Any, Dict
from opentelemetry import context as otel_context, propagate

from sap_cloud_sdk.core.telemetry.constants import (
ATTR_SAP_TRIGGER_TYPE,
Expand Down Expand Up @@ -32,9 +33,12 @@ def __init__(self, app: Any, attrs_var: ContextVar[Dict[str, Any]]) -> None:

async def dispatch(self, request: Request, call_next: Any) -> Response:
token = self._attrs_var.set(_extract_ias_attrs(request))
ctx = propagate.extract(request.headers)
ctx_token = otel_context.attach(ctx)
try:
return await call_next(request)
finally:
otel_context.detach(ctx_token)
self._attrs_var.reset(token)


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