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feat(chalice): Add span streaming support to Chalice integration #6503

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feat(chalice): Add span streaming support to Chalice integration #6503

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feat(chalice): Add span streaming support to Chalice integration
ericapisani Jun 4, 2026
6df89ee
cleanup
ericapisani Jun 4, 2026
d637c2f
address potential data loss issue - https://github.com/getsentry/sent…
ericapisani Jun 4, 2026
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154 changes: 126 additions & 28 deletions sentry_sdk/integrations/chalice.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,18 @@
from functools import wraps

import sentry_sdk
import sentry_sdk.traces
from sentry_sdk.consts import OP
from sentry_sdk.integrations import DidNotEnable, Integration
from sentry_sdk.integrations._wsgi_common import _filter_headers
from sentry_sdk.integrations.aws_lambda import _make_request_event_processor
from sentry_sdk.integrations.cloud_resource_context import (
CLOUD_PLATFORM,
CLOUD_PROVIDER,
)
from sentry_sdk.traces import SegmentSource, SpanStatus
from sentry_sdk.tracing import TransactionSource
from sentry_sdk.tracing_utils import has_span_streaming_enabled
from sentry_sdk.utils import (
capture_internal_exceptions,
event_from_exception,
Expand Down Expand Up @@ -40,18 +49,42 @@
scope.add_event_processor(
_make_request_event_processor(event, context, configured_time)
)
try:
return ChaliceEventSourceHandler.__call__(self, event, context)
except Exception:
exc_info = sys.exc_info()
event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},

if has_span_streaming_enabled(client.options):
span = sentry_sdk.traces.start_span(
name=context.function_name,
parent_span=None,
attributes=_get_lambda_span_attributes(context),
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)
sentry_sdk.capture_event(event, hint=hint)
client.flush()
reraise(*exc_info)
try:
return ChaliceEventSourceHandler.__call__(self, event, context)
except Exception:
exc_info = sys.exc_info()
span.status = SpanStatus.ERROR.value
sentry_event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},
)
sentry_sdk.capture_event(sentry_event, hint=hint)
reraise(*exc_info)
finally:
span.end()
client.flush()

else:
try:
return ChaliceEventSourceHandler.__call__(self, event, context)
except Exception:
exc_info = sys.exc_info()
sentry_event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},
)
sentry_sdk.capture_event(sentry_event, hint=hint)
client.flush()
reraise(*exc_info)


def _get_view_function_response(
Expand All @@ -63,38 +96,81 @@
with sentry_sdk.isolation_scope() as scope:
with capture_internal_exceptions():
configured_time = app.lambda_context.get_remaining_time_in_millis()
scope.set_transaction_name(
app.lambda_context.function_name,
source=TransactionSource.COMPONENT,
)

scope.add_event_processor(
_make_request_event_processor(
app.current_request.to_dict(),
app.lambda_context,
configured_time,
)
)
try:
return view_function(**function_args)
except Exception as exc:
if isinstance(exc, ChaliceViewError):

if has_span_streaming_enabled(client.options):
aws_context = app.lambda_context
request_dict = app.current_request.to_dict()
headers = request_dict.get("headers", {})

header_attrs: "Dict[str, Any]" = {}
for header, value in _filter_headers(
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headers, use_annotated_value=False
).items():
header_attrs[f"http.request.header.{header.lower()}"] = value

additional_attrs: "Dict[str, Any]" = {}
if "method" in request_dict:
additional_attrs["http.request.method"] = request_dict["method"]

span = sentry_sdk.traces.start_span(
name=aws_context.function_name,
parent_span=None,
attributes={
**_get_lambda_span_attributes(aws_context),
**header_attrs,
**additional_attrs,
},
)
try:
return view_function(**function_args)
except Exception as exc:
if isinstance(exc, ChaliceViewError):
raise

Check warning on line 135 in sentry_sdk/integrations/chalice.py

View check run for this annotation

@sentry/warden / warden: find-bugs

Missing `continue_trace` call before `start_span` breaks distributed tracing in streaming path 

In the streaming path, `sentry_sdk.traces.continue_trace(headers)` is never called before `start_span`, so incoming `sentry-trace`/`traceparent`/`baggage` headers from HTTP requests are never propagated — every Chalice invocation starts a fresh, unconnected trace instead of joining the upstream trace. Add `sentry_sdk.traces.continue_trace(headers)` before the `start_span` call (mirroring the GCP integration at `gcp.py:133`).
exc_info = sys.exc_info()
span.status = SpanStatus.ERROR.value
sentry_event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},
)
sentry_sdk.capture_event(sentry_event, hint=hint)
raise
exc_info = sys.exc_info()
event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},
finally:
span.end()
client.flush()
else:
scope.set_transaction_name(
app.lambda_context.function_name,
source=TransactionSource.COMPONENT,
)
sentry_sdk.capture_event(event, hint=hint)
client.flush()
raise
try:
return view_function(**function_args)
except Exception as exc:
if isinstance(exc, ChaliceViewError):
raise
exc_info = sys.exc_info()
sentry_event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "chalice", "handled": False},
)
sentry_sdk.capture_event(sentry_event, hint=hint)
client.flush()
raise

return wrapped_view_function # type: ignore


class ChaliceIntegration(Integration):
identifier = "chalice"
origin = f"auto.function.{identifier}"

@staticmethod
def setup_once() -> None:
Expand Down Expand Up @@ -129,3 +205,25 @@
RestAPIEventHandler._get_view_function_response = sentry_event_response
# for everything else (like events)
chalice.app.EventSourceHandler = EventSourceHandler


def _get_lambda_span_attributes(aws_context: "Any") -> "Dict[str, Any]":
invoked_arn = aws_context.invoked_function_arn
split_invoked_arn = invoked_arn.split(":")
aws_region = split_invoked_arn[3] if len(split_invoked_arn) > 3 else "unknown"
Comment on lines +211 to +213
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@ericapisani ericapisani Jun 4, 2026

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Although AWS sets this value and it's unlikely to be malformed, these extra guards were added to ensure that if it were, we don't crash the user's application


return {
"sentry.op": OP.FUNCTION_AWS,
"sentry.origin": ChaliceIntegration.origin,
"sentry.span.source": SegmentSource.COMPONENT,
"cloud.platform": CLOUD_PLATFORM.AWS_LAMBDA,
"cloud.provider": CLOUD_PROVIDER.AWS,
"faas.name": aws_context.function_name,
"cloud.region": aws_region,
"cloud.resource_id": invoked_arn,
"aws.lambda.invoked_arn": invoked_arn,
"faas.invocation_id": aws_context.aws_request_id,
"faas.version": aws_context.function_version,
"aws.log.group.names": [aws_context.log_group_name],
"aws.log.stream.names": [aws_context.log_stream_name],
}
1 change: 1 addition & 0 deletions sentry_sdk/integrations/cloud_resource_context.py
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ class CLOUD_PLATFORM: # noqa: N801
"""

AWS_EC2 = "aws_ec2"
AWS_LAMBDA = "aws_lambda"
GCP_COMPUTE_ENGINE = "gcp_compute_engine"


Expand Down
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