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from datetime import datetime, timedelta
from os import environ
import sys
from sentry_sdk.hub import Hub, _should_send_default_pii
from sentry_sdk.tracing import Transaction
from sentry_sdk._compat import reraise
from sentry_sdk.utils import (
AnnotatedValue,
capture_internal_exceptions,
event_from_exception,
logger,
TimeoutThread,
)
from sentry_sdk.integrations import Integration
from sentry_sdk.integrations._wsgi_common import _filter_headers
from sentry_sdk._types import MYPY
if MYPY:
from typing import Any
from typing import TypeVar
from typing import Callable
from typing import Optional
from sentry_sdk._types import EventProcessor, Event, Hint
F = TypeVar("F", bound=Callable[..., Any])
# Constants
TIMEOUT_WARNING_BUFFER = 1500 # Buffer time required to send timeout warning to Sentry
MILLIS_TO_SECONDS = 1000.0
def _wrap_init_error(init_error):
# type: (F) -> F
def sentry_init_error(*args, **kwargs):
# type: (*Any, **Any) -> Any
hub = Hub.current
integration = hub.get_integration(AwsLambdaIntegration)
if integration is None:
return init_error(*args, **kwargs)
# If an integration is there, a client has to be there.
client = hub.client # type: Any
with capture_internal_exceptions():
with hub.configure_scope() as scope:
scope.clear_breadcrumbs()
exc_info = sys.exc_info()
if exc_info and all(exc_info):
event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "aws_lambda", "handled": False},
)
hub.capture_event(event, hint=hint)
return init_error(*args, **kwargs)
return sentry_init_error # type: ignore
def _wrap_handler(handler):
# type: (F) -> F
def sentry_handler(event, context, *args, **kwargs):
# type: (Any, Any, *Any, **Any) -> Any
hub = Hub.current
integration = hub.get_integration(AwsLambdaIntegration)
if integration is None:
return handler(event, context, *args, **kwargs)
# If an integration is there, a client has to be there.
client = hub.client # type: Any
configured_time = context.get_remaining_time_in_millis()
with hub.push_scope() as scope:
with capture_internal_exceptions():
scope.clear_breadcrumbs()
scope.add_event_processor(
_make_request_event_processor(event, context, configured_time)
)
scope.set_tag("aws_region", context.invoked_function_arn.split(":")[3])
timeout_thread = None
# Starting the Timeout thread only if the configured time is greater than Timeout warning
# buffer and timeout_warning parameter is set True.
if (
integration.timeout_warning
and configured_time > TIMEOUT_WARNING_BUFFER
):
waiting_time = (
configured_time - TIMEOUT_WARNING_BUFFER
) / MILLIS_TO_SECONDS
timeout_thread = TimeoutThread(
waiting_time,
configured_time / MILLIS_TO_SECONDS,
)
# Starting the thread to raise timeout warning exception
timeout_thread.start()
headers = event.get("headers", {})
transaction = Transaction.continue_from_headers(
headers, op="serverless.function", name=context.function_name
)
with hub.start_transaction(transaction):
try:
return handler(event, context, *args, **kwargs)
except Exception:
exc_info = sys.exc_info()
event, hint = event_from_exception(
exc_info,
client_options=client.options,
mechanism={"type": "aws_lambda", "handled": False},
)
hub.capture_event(event, hint=hint)
reraise(*exc_info)
finally:
if timeout_thread:
timeout_thread.stop()
return sentry_handler # type: ignore
def _drain_queue():
# type: () -> None
with capture_internal_exceptions():
hub = Hub.current
integration = hub.get_integration(AwsLambdaIntegration)
if integration is not None:
# Flush out the event queue before AWS kills the
# process.
hub.flush()
class AwsLambdaIntegration(Integration):
identifier = "aws_lambda"
def __init__(self, timeout_warning=False):
# type: (bool) -> None
self.timeout_warning = timeout_warning
@staticmethod
def setup_once():
# type: () -> None
# Python 2.7: Everything is in `__main__`.
#
# Python 3.7: If the bootstrap module is *already imported*, it is the
# one we actually want to use (no idea what's in __main__)
#
# On Python 3.8 bootstrap is also importable, but will be the same file
# as __main__ imported under a different name:
#
# sys.modules['__main__'].__file__ == sys.modules['bootstrap'].__file__
# sys.modules['__main__'] is not sys.modules['bootstrap']
#
# Such a setup would then make all monkeypatches useless.
if "bootstrap" in sys.modules:
lambda_bootstrap = sys.modules["bootstrap"] # type: Any
elif "__main__" in sys.modules:
lambda_bootstrap = sys.modules["__main__"]
else:
logger.warning(
"Not running in AWS Lambda environment, "
"AwsLambdaIntegration disabled (could not find bootstrap module)"
)
return
if not hasattr(lambda_bootstrap, "handle_event_request"):
logger.warning(
"Not running in AWS Lambda environment, "
"AwsLambdaIntegration disabled (could not find handle_event_request)"
)
return
pre_37 = hasattr(lambda_bootstrap, "handle_http_request") # Python 3.6 or 2.7
if pre_37:
old_handle_event_request = lambda_bootstrap.handle_event_request
def sentry_handle_event_request(request_handler, *args, **kwargs):
# type: (Any, *Any, **Any) -> Any
request_handler = _wrap_handler(request_handler)
return old_handle_event_request(request_handler, *args, **kwargs)
lambda_bootstrap.handle_event_request = sentry_handle_event_request
old_handle_http_request = lambda_bootstrap.handle_http_request
def sentry_handle_http_request(request_handler, *args, **kwargs):
# type: (Any, *Any, **Any) -> Any
request_handler = _wrap_handler(request_handler)
return old_handle_http_request(request_handler, *args, **kwargs)
lambda_bootstrap.handle_http_request = sentry_handle_http_request
# Patch to_json to drain the queue. This should work even when the
# SDK is initialized inside of the handler
old_to_json = lambda_bootstrap.to_json
def sentry_to_json(*args, **kwargs):
# type: (*Any, **Any) -> Any
_drain_queue()
return old_to_json(*args, **kwargs)
lambda_bootstrap.to_json = sentry_to_json
else:
lambda_bootstrap.LambdaRuntimeClient.post_init_error = _wrap_init_error(
lambda_bootstrap.LambdaRuntimeClient.post_init_error
)
old_handle_event_request = lambda_bootstrap.handle_event_request
def sentry_handle_event_request( # type: ignore
lambda_runtime_client, request_handler, *args, **kwargs
):
request_handler = _wrap_handler(request_handler)
return old_handle_event_request(
lambda_runtime_client, request_handler, *args, **kwargs
)
lambda_bootstrap.handle_event_request = sentry_handle_event_request
# Patch the runtime client to drain the queue. This should work
# even when the SDK is initialized inside of the handler
def _wrap_post_function(f):
# type: (F) -> F
def inner(*args, **kwargs):
# type: (*Any, **Any) -> Any
_drain_queue()
return f(*args, **kwargs)
return inner # type: ignore
lambda_bootstrap.LambdaRuntimeClient.post_invocation_result = (
_wrap_post_function(
lambda_bootstrap.LambdaRuntimeClient.post_invocation_result
)
)
lambda_bootstrap.LambdaRuntimeClient.post_invocation_error = (
_wrap_post_function(
lambda_bootstrap.LambdaRuntimeClient.post_invocation_error
)
)
def _make_request_event_processor(aws_event, aws_context, configured_timeout):
# type: (Any, Any, Any) -> EventProcessor
start_time = datetime.utcnow()
def event_processor(event, hint, start_time=start_time):
# type: (Event, Hint, datetime) -> Optional[Event]
remaining_time_in_milis = aws_context.get_remaining_time_in_millis()
exec_duration = configured_timeout - remaining_time_in_milis
extra = event.setdefault("extra", {})
extra["lambda"] = {
"function_name": aws_context.function_name,
"function_version": aws_context.function_version,
"invoked_function_arn": aws_context.invoked_function_arn,
"aws_request_id": aws_context.aws_request_id,
"execution_duration_in_millis": exec_duration,
"remaining_time_in_millis": remaining_time_in_milis,
}
extra["cloudwatch logs"] = {
"url": _get_cloudwatch_logs_url(aws_context, start_time),
"log_group": aws_context.log_group_name,
"log_stream": aws_context.log_stream_name,
}
request = event.get("request", {})
if "httpMethod" in aws_event:
request["method"] = aws_event["httpMethod"]
request["url"] = _get_url(aws_event, aws_context)
if "queryStringParameters" in aws_event:
request["query_string"] = aws_event["queryStringParameters"]
if "headers" in aws_event:
request["headers"] = _filter_headers(aws_event["headers"])
if _should_send_default_pii():
user_info = event.setdefault("user", {})
id = aws_event.get("identity", {}).get("userArn")
if id is not None:
user_info.setdefault("id", id)
ip = aws_event.get("identity", {}).get("sourceIp")
if ip is not None:
user_info.setdefault("ip_address", ip)
if "body" in aws_event:
request["data"] = aws_event.get("body", "")
else:
if aws_event.get("body", None):
# Unfortunately couldn't find a way to get structured body from AWS
# event. Meaning every body is unstructured to us.
request["data"] = AnnotatedValue("", {"rem": [["!raw", "x", 0, 0]]})
event["request"] = request
return event
return event_processor
def _get_url(event, context):
# type: (Any, Any) -> str
path = event.get("path", None)
headers = event.get("headers", {})
host = headers.get("Host", None)
proto = headers.get("X-Forwarded-Proto", None)
if proto and host and path:
return "{}://{}{}".format(proto, host, path)
return "awslambda:///{}".format(context.function_name)
def _get_cloudwatch_logs_url(context, start_time):
# type: (Any, datetime) -> str
"""
Generates a CloudWatchLogs console URL based on the context object
Arguments:
context {Any} -- context from lambda handler
Returns:
str -- AWS Console URL to logs.
"""
formatstring = "%Y-%m-%dT%H:%M:%SZ"
url = (
"https://console.aws.amazon.com/cloudwatch/home?region={region}"
"#logEventViewer:group={log_group};stream={log_stream}"
";start={start_time};end={end_time}"
).format(
region=environ.get("AWS_REGION"),
log_group=context.log_group_name,
log_stream=context.log_stream_name,
start_time=(start_time - timedelta(seconds=1)).strftime(formatstring),
end_time=(datetime.utcnow() + timedelta(seconds=2)).strftime(formatstring),
)
return url
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