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from collections.abc import Set
from copy import deepcopy
import sentry_sdk
from sentry_sdk.consts import OP, SPANDATA
from sentry_sdk.integrations import (
_DEFAULT_FAILED_REQUEST_STATUS_CODES,
DidNotEnable,
Integration,
)
from sentry_sdk.integrations.asgi import SentryAsgiMiddleware
from sentry_sdk.integrations.logging import ignore_logger
from sentry_sdk.scope import should_send_default_pii
from sentry_sdk.tracing import SOURCE_FOR_STYLE, TransactionSource
from sentry_sdk.tracing_utils import has_span_streaming_enabled
from sentry_sdk.utils import (
ensure_integration_enabled,
event_from_exception,
transaction_from_function,
)
try:
from litestar import Litestar, Request # type: ignore
from litestar.data_extractors import ConnectionDataExtractor # type: ignore
from litestar.exceptions import HTTPException # type: ignore
from litestar.handlers.base import BaseRouteHandler # type: ignore
from litestar.middleware import DefineMiddleware # type: ignore
from litestar.routes.http import HTTPRoute # type: ignore
except ImportError:
raise DidNotEnable("Litestar is not installed")
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from typing import Any, Optional, Union
from litestar.middleware import MiddlewareProtocol
from litestar.types import ( # type: ignore
HTTPReceiveMessage,
HTTPScope,
Message,
Middleware,
Receive,
Send,
WebSocketReceiveMessage,
)
from litestar.types import (
Scope as LitestarScope,
)
from litestar.types.asgi_types import ASGIApp # type: ignore
from sentry_sdk._types import Event, Hint
_DEFAULT_TRANSACTION_NAME = "generic Litestar request"
class LitestarIntegration(Integration):
identifier = "litestar"
origin = f"auto.http.{identifier}"
def __init__(
self,
failed_request_status_codes: "Set[int]" = _DEFAULT_FAILED_REQUEST_STATUS_CODES,
) -> None:
self.failed_request_status_codes = failed_request_status_codes
@staticmethod
def setup_once() -> None:
patch_app_init()
patch_middlewares()
patch_http_route_handle()
# The following line follows the pattern found in other integrations such as `DjangoIntegration.setup_once`.
# The Litestar `ExceptionHandlerMiddleware.__call__` catches exceptions and does the following
# (among other things):
# 1. Logs them, some at least (such as 500s) as errors
# 2. Calls after_exception hooks
# The `LitestarIntegration`` provides an after_exception hook (see `patch_app_init` below) to create a Sentry event
# from an exception, which ends up being called during step 2 above. However, the Sentry `LoggingIntegration` will
# by default create a Sentry event from error logs made in step 1 if we do not prevent it from doing so.
ignore_logger("litestar")
class SentryLitestarASGIMiddleware(SentryAsgiMiddleware):
def __init__(
self, app: "ASGIApp", span_origin: str = LitestarIntegration.origin
) -> None:
super().__init__(
app=app,
unsafe_context_data=False,
transaction_style="endpoint",
mechanism_type="asgi",
span_origin=span_origin,
asgi_version=3,
)
def _capture_request_exception(self, exc: Exception) -> None:
"""Avoid catching exceptions from request handlers.
Those exceptions are already handled in Litestar.after_exception handler.
We still catch exceptions from application lifespan handlers.
"""
pass
def patch_app_init() -> None:
"""
Replaces the Litestar class's `__init__` function in order to inject `after_exception` handlers and set the
`SentryLitestarASGIMiddleware` as the outmost middleware in the stack.
See:
- https://docs.litestar.dev/2/usage/applications.html#after-exception
- https://docs.litestar.dev/2/usage/middleware/using-middleware.html
"""
old__init__ = Litestar.__init__
@ensure_integration_enabled(LitestarIntegration, old__init__)
def injection_wrapper(self: "Litestar", *args: "Any", **kwargs: "Any") -> None:
kwargs["after_exception"] = [
exception_handler,
*(kwargs.get("after_exception") or []),
]
middleware = kwargs.get("middleware") or []
kwargs["middleware"] = [SentryLitestarASGIMiddleware, *middleware]
old__init__(self, *args, **kwargs)
Litestar.__init__ = injection_wrapper
def patch_middlewares() -> None:
old_resolve_middleware_stack = BaseRouteHandler.resolve_middleware
@ensure_integration_enabled(LitestarIntegration, old_resolve_middleware_stack)
def resolve_middleware_wrapper(self: "BaseRouteHandler") -> "list[Middleware]":
return [
enable_span_for_middleware(middleware)
for middleware in old_resolve_middleware_stack(self)
]
BaseRouteHandler.resolve_middleware = resolve_middleware_wrapper
def enable_span_for_middleware(middleware: "Middleware") -> "Middleware":
if (
not hasattr(middleware, "__call__") # noqa: B004
or middleware is SentryLitestarASGIMiddleware
):
return middleware
if isinstance(middleware, DefineMiddleware):
old_call: "ASGIApp" = middleware.middleware.__call__
else:
old_call = middleware.__call__
async def _create_span_call(
self: "MiddlewareProtocol",
scope: "LitestarScope",
receive: "Receive",
send: "Send",
) -> None:
client = sentry_sdk.get_client()
if client.get_integration(LitestarIntegration) is None:
return await old_call(self, scope, receive, send)
middleware_name = self.__class__.__name__
if has_span_streaming_enabled(client.options):
with sentry_sdk.traces.start_span(
name=middleware_name,
attributes={
"sentry.op": OP.MIDDLEWARE_LITESTAR,
"sentry.origin": LitestarIntegration.origin,
},
) as middleware_span:
middleware_span.set_attribute(SPANDATA.MIDDLEWARE_NAME, middleware_name)
# Creating spans for the "receive" callback
async def _sentry_receive(
*args: "Any", **kwargs: "Any"
) -> "Union[HTTPReceiveMessage, WebSocketReceiveMessage]":
if client.get_integration(LitestarIntegration) is None:
return await receive(*args, **kwargs)
with sentry_sdk.traces.start_span(
name=getattr(receive, "__qualname__", str(receive)),
attributes={
"sentry.op": OP.MIDDLEWARE_LITESTAR_RECEIVE,
"sentry.origin": LitestarIntegration.origin,
},
) as span:
span.set_attribute(SPANDATA.MIDDLEWARE_NAME, middleware_name)
return await receive(*args, **kwargs)
receive_name = getattr(receive, "__name__", str(receive))
receive_patched = receive_name == "_sentry_receive"
new_receive = _sentry_receive if not receive_patched else receive
# Creating spans for the "send" callback
async def _sentry_send(message: "Message") -> None:
if client.get_integration(LitestarIntegration) is None:
return await send(message)
with sentry_sdk.traces.start_span(
name=getattr(send, "__qualname__", str(send)),
attributes={
"sentry.op": OP.MIDDLEWARE_LITESTAR_SEND,
"sentry.origin": LitestarIntegration.origin,
},
) as span:
span.set_attribute(SPANDATA.MIDDLEWARE_NAME, middleware_name)
return await send(message)
send_name = getattr(send, "__name__", str(send))
send_patched = send_name == "_sentry_send"
new_send = _sentry_send if not send_patched else send
return await old_call(self, scope, new_receive, new_send)
else:
with sentry_sdk.start_span(
op=OP.MIDDLEWARE_LITESTAR,
name=middleware_name,
origin=LitestarIntegration.origin,
) as middleware_span:
middleware_span.set_tag("litestar.middleware_name", middleware_name)
# Creating spans for the "receive" callback
async def _sentry_receive(
*args: "Any", **kwargs: "Any"
) -> "Union[HTTPReceiveMessage, WebSocketReceiveMessage]":
if client.get_integration(LitestarIntegration) is None:
return await receive(*args, **kwargs)
with sentry_sdk.start_span(
op=OP.MIDDLEWARE_LITESTAR_RECEIVE,
name=getattr(receive, "__qualname__", str(receive)),
origin=LitestarIntegration.origin,
) as span:
span.set_tag("litestar.middleware_name", middleware_name)
return await receive(*args, **kwargs)
receive_name = getattr(receive, "__name__", str(receive))
receive_patched = receive_name == "_sentry_receive"
new_receive = _sentry_receive if not receive_patched else receive
# Creating spans for the "send" callback
async def _sentry_send(message: "Message") -> None:
if client.get_integration(LitestarIntegration) is None:
return await send(message)
with sentry_sdk.start_span(
op=OP.MIDDLEWARE_LITESTAR_SEND,
name=getattr(send, "__qualname__", str(send)),
origin=LitestarIntegration.origin,
) as span:
span.set_tag("litestar.middleware_name", middleware_name)
return await send(message)
send_name = getattr(send, "__name__", str(send))
send_patched = send_name == "_sentry_send"
new_send = _sentry_send if not send_patched else send
return await old_call(self, scope, new_receive, new_send)
not_yet_patched = old_call.__name__ not in ["_create_span_call"]
if not_yet_patched:
if isinstance(middleware, DefineMiddleware):
middleware.middleware.__call__ = _create_span_call
else:
middleware.__call__ = _create_span_call
return middleware
def patch_http_route_handle() -> None:
old_handle = HTTPRoute.handle
async def handle_wrapper(
self: "HTTPRoute", scope: "HTTPScope", receive: "Receive", send: "Send"
) -> None:
if sentry_sdk.get_client().get_integration(LitestarIntegration) is None:
return await old_handle(self, scope, receive, send)
sentry_scope = sentry_sdk.get_isolation_scope()
request: "Request[Any, Any]" = scope["app"].request_class(
scope=scope, receive=receive, send=send
)
extracted_request_data = ConnectionDataExtractor(
parse_body=True, parse_query=True
)(request)
body = extracted_request_data.pop("body")
request_data = await body
route_handler = scope.get("route_handler")
func = None
if route_handler.name is not None:
name = route_handler.name
# Accounts for use of type `Ref` in earlier versions of litestar without the need to reference it as a type
elif hasattr(route_handler.fn, "value"):
func = route_handler.fn.value
else:
func = route_handler.fn
if func is not None:
name = transaction_from_function(func)
source = SOURCE_FOR_STYLE["endpoint"]
if not name:
name = _DEFAULT_TRANSACTION_NAME
source = TransactionSource.ROUTE
sentry_sdk.set_transaction_name(name, source)
sentry_scope.set_transaction_name(name, source)
def event_processor(event: "Event", _: "Hint") -> "Event":
request_info = event.get("request", {})
request_info["content_length"] = len(scope.get("_body", b""))
if should_send_default_pii():
request_info["cookies"] = extracted_request_data["cookies"]
if request_data is not None:
request_info["data"] = request_data
event["request"] = deepcopy(request_info)
return event
sentry_scope._name = LitestarIntegration.identifier
sentry_scope.add_event_processor(event_processor)
return await old_handle(self, scope, receive, send)
HTTPRoute.handle = handle_wrapper
def retrieve_user_from_scope(scope: "LitestarScope") -> "Optional[dict[str, Any]]":
scope_user = scope.get("user")
if isinstance(scope_user, dict):
return scope_user
if hasattr(scope_user, "asdict"): # dataclasses
return scope_user.asdict()
return None
@ensure_integration_enabled(LitestarIntegration)
def exception_handler(exc: Exception, scope: "LitestarScope") -> None:
user_info: "Optional[dict[str, Any]]" = None
if should_send_default_pii():
user_info = retrieve_user_from_scope(scope)
if user_info and isinstance(user_info, dict):
sentry_scope = sentry_sdk.get_isolation_scope()
sentry_scope.set_user(user_info)
if isinstance(exc, HTTPException):
integration = sentry_sdk.get_client().get_integration(LitestarIntegration)
if (
integration is not None
and exc.status_code not in integration.failed_request_status_codes
):
return
event, hint = event_from_exception(
exc,
client_options=sentry_sdk.get_client().options,
mechanism={"type": LitestarIntegration.identifier, "handled": False},
)
sentry_sdk.capture_event(event, hint=hint)