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tracing.py
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1462 lines (1194 loc) · 49.9 KB
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import uuid
import warnings
from datetime import datetime, timedelta, timezone
from enum import Enum
from typing import TYPE_CHECKING
import sentry_sdk
from sentry_sdk.consts import INSTRUMENTER, SPANDATA, SPANSTATUS, SPANTEMPLATE
from sentry_sdk.profiler.continuous_profiler import get_profiler_id
from sentry_sdk.utils import (
capture_internal_exceptions,
get_current_thread_meta,
is_valid_sample_rate,
logger,
nanosecond_time,
should_be_treated_as_error,
)
if TYPE_CHECKING:
from collections.abc import Callable, Mapping, MutableMapping
from typing import (
Any,
Dict,
Iterator,
List,
Optional,
ParamSpec,
Tuple,
TypeVar,
Union,
overload,
)
from typing_extensions import TypedDict, Unpack
P = ParamSpec("P")
R = TypeVar("R")
from sentry_sdk._types import (
Event,
MeasurementUnit,
MeasurementValue,
SamplingContext,
)
from sentry_sdk.profiler.continuous_profiler import ContinuousProfile
from sentry_sdk.profiler.transaction_profiler import Profile
class SpanKwargs(TypedDict, total=False):
trace_id: str
"""
The trace ID of the root span. If this new span is to be the root span,
omit this parameter, and a new trace ID will be generated.
"""
span_id: str
"""The span ID of this span. If omitted, a new span ID will be generated."""
parent_span_id: str
"""The span ID of the parent span, if applicable."""
same_process_as_parent: bool
"""Whether this span is in the same process as the parent span."""
sampled: bool
"""
Whether the span should be sampled. Overrides the default sampling decision
for this span when provided.
"""
op: str
"""
The span's operation. A list of recommended values is available here:
https://develop.sentry.dev/sdk/performance/span-operations/
"""
description: str
"""A description of what operation is being performed within the span. This argument is DEPRECATED. Please use the `name` parameter, instead."""
hub: "Optional[sentry_sdk.Hub]"
"""The hub to use for this span. This argument is DEPRECATED. Please use the `scope` parameter, instead."""
status: str
"""The span's status. Possible values are listed at https://develop.sentry.dev/sdk/event-payloads/span/"""
containing_transaction: "Optional[Transaction]"
"""The transaction that this span belongs to."""
start_timestamp: "Optional[Union[datetime, float]]"
"""
The timestamp when the span started. If omitted, the current time
will be used.
"""
scope: "sentry_sdk.Scope"
"""The scope to use for this span. If not provided, we use the current scope."""
origin: str
"""
The origin of the span.
See https://develop.sentry.dev/sdk/performance/trace-origin/
Default "manual".
"""
name: str
"""A string describing what operation is being performed within the span/transaction."""
class TransactionKwargs(SpanKwargs, total=False):
source: str
"""
A string describing the source of the transaction name. This will be used to determine the transaction's type.
See https://develop.sentry.dev/sdk/event-payloads/transaction/#transaction-annotations for more information.
Default "custom".
"""
parent_sampled: bool
"""Whether the parent transaction was sampled. If True this transaction will be kept, if False it will be discarded."""
baggage: "Baggage"
"""The W3C baggage header value. (see https://www.w3.org/TR/baggage/)"""
ProfileContext = TypedDict(
"ProfileContext",
{
"profiler_id": str,
},
)
BAGGAGE_HEADER_NAME = "baggage"
SENTRY_TRACE_HEADER_NAME = "sentry-trace"
# Transaction source
# see https://develop.sentry.dev/sdk/event-payloads/transaction/#transaction-annotations
class TransactionSource(str, Enum):
COMPONENT = "component"
CUSTOM = "custom"
ROUTE = "route"
TASK = "task"
URL = "url"
VIEW = "view"
def __str__(self) -> str:
return self.value
# These are typically high cardinality and the server hates them
LOW_QUALITY_TRANSACTION_SOURCES = [
TransactionSource.URL,
]
SOURCE_FOR_STYLE = {
"endpoint": TransactionSource.COMPONENT,
"function_name": TransactionSource.COMPONENT,
"handler_name": TransactionSource.COMPONENT,
"method_and_path_pattern": TransactionSource.ROUTE,
"path": TransactionSource.URL,
"route_name": TransactionSource.COMPONENT,
"route_pattern": TransactionSource.ROUTE,
"uri_template": TransactionSource.ROUTE,
"url": TransactionSource.ROUTE,
}
def get_span_status_from_http_code(http_status_code: int) -> str:
"""
Returns the Sentry status corresponding to the given HTTP status code.
See: https://develop.sentry.dev/sdk/event-payloads/contexts/#trace-context
"""
if http_status_code < 400:
return SPANSTATUS.OK
elif 400 <= http_status_code < 500:
if http_status_code == 403:
return SPANSTATUS.PERMISSION_DENIED
elif http_status_code == 404:
return SPANSTATUS.NOT_FOUND
elif http_status_code == 429:
return SPANSTATUS.RESOURCE_EXHAUSTED
elif http_status_code == 413:
return SPANSTATUS.FAILED_PRECONDITION
elif http_status_code == 401:
return SPANSTATUS.UNAUTHENTICATED
elif http_status_code == 409:
return SPANSTATUS.ALREADY_EXISTS
else:
return SPANSTATUS.INVALID_ARGUMENT
elif 500 <= http_status_code < 600:
if http_status_code == 504:
return SPANSTATUS.DEADLINE_EXCEEDED
elif http_status_code == 501:
return SPANSTATUS.UNIMPLEMENTED
elif http_status_code == 503:
return SPANSTATUS.UNAVAILABLE
else:
return SPANSTATUS.INTERNAL_ERROR
return SPANSTATUS.UNKNOWN_ERROR
class _SpanRecorder:
"""Limits the number of spans recorded in a transaction."""
__slots__ = ("maxlen", "spans", "dropped_spans")
def __init__(self, maxlen: int) -> None:
# FIXME: this is `maxlen - 1` only to preserve historical behavior
# enforced by tests.
# Either this should be changed to `maxlen` or the JS SDK implementation
# should be changed to match a consistent interpretation of what maxlen
# limits: either transaction+spans or only child spans.
self.maxlen = maxlen - 1
self.spans: "List[Span]" = []
self.dropped_spans: int = 0
def add(self, span: "Span") -> None:
if len(self.spans) > self.maxlen:
span._span_recorder = None
self.dropped_spans += 1
else:
self.spans.append(span)
class Span:
"""A span holds timing information of a block of code.
Spans can have multiple child spans thus forming a span tree.
:param trace_id: The trace ID of the root span. If this new span is to be the root span,
omit this parameter, and a new trace ID will be generated.
:param span_id: The span ID of this span. If omitted, a new span ID will be generated.
:param parent_span_id: The span ID of the parent span, if applicable.
:param same_process_as_parent: Whether this span is in the same process as the parent span.
:param sampled: Whether the span should be sampled. Overrides the default sampling decision
for this span when provided.
:param op: The span's operation. A list of recommended values is available here:
https://develop.sentry.dev/sdk/performance/span-operations/
:param description: A description of what operation is being performed within the span.
.. deprecated:: 2.15.0
Please use the `name` parameter, instead.
:param name: A string describing what operation is being performed within the span.
:param hub: The hub to use for this span.
.. deprecated:: 2.0.0
Please use the `scope` parameter, instead.
:param status: The span's status. Possible values are listed at
https://develop.sentry.dev/sdk/event-payloads/span/
:param containing_transaction: The transaction that this span belongs to.
:param start_timestamp: The timestamp when the span started. If omitted, the current time
will be used.
:param scope: The scope to use for this span. If not provided, we use the current scope.
"""
__slots__ = (
"_trace_id",
"_span_id",
"parent_span_id",
"same_process_as_parent",
"sampled",
"op",
"description",
"_measurements",
"start_timestamp",
"_start_timestamp_monotonic_ns",
"status",
"timestamp",
"_tags",
"_data",
"_span_recorder",
"hub",
"_context_manager_state",
"_containing_transaction",
"scope",
"origin",
"name",
"_flags",
"_flags_capacity",
)
def __init__(
self,
trace_id: "Optional[str]" = None,
span_id: "Optional[str]" = None,
parent_span_id: "Optional[str]" = None,
same_process_as_parent: bool = True,
sampled: "Optional[bool]" = None,
op: "Optional[str]" = None,
description: "Optional[str]" = None,
hub: "Optional[sentry_sdk.Hub]" = None, # deprecated
status: "Optional[str]" = None,
containing_transaction: "Optional[Transaction]" = None,
start_timestamp: "Optional[Union[datetime, float]]" = None,
scope: "Optional[sentry_sdk.Scope]" = None,
origin: str = "manual",
name: "Optional[str]" = None,
) -> None:
self._trace_id = trace_id
self._span_id = span_id
self.parent_span_id = parent_span_id
self.same_process_as_parent = same_process_as_parent
self.sampled = sampled
self.op = op
self.description = name or description
self.status = status
self.hub = hub # backwards compatibility
self.scope = scope
self.origin = origin
self._measurements: "Dict[str, MeasurementValue]" = {}
self._tags: "MutableMapping[str, str]" = {}
self._data: "Dict[str, Any]" = {}
self._containing_transaction = containing_transaction
self._flags: "Dict[str, bool]" = {}
self._flags_capacity = 10
if hub is not None:
warnings.warn(
"The `hub` parameter is deprecated. Please use `scope` instead.",
DeprecationWarning,
stacklevel=2,
)
self.scope = self.scope or hub.scope
if start_timestamp is None:
start_timestamp = datetime.now(timezone.utc)
elif isinstance(start_timestamp, float):
start_timestamp = datetime.fromtimestamp(start_timestamp, timezone.utc)
self.start_timestamp = start_timestamp
try:
# profiling depends on this value and requires that
# it is measured in nanoseconds
self._start_timestamp_monotonic_ns = nanosecond_time()
except AttributeError:
pass
#: End timestamp of span
self.timestamp: "Optional[datetime]" = None
self._span_recorder: "Optional[_SpanRecorder]" = None
self.update_active_thread()
self.set_profiler_id(get_profiler_id())
# TODO this should really live on the Transaction class rather than the Span
# class
def init_span_recorder(self, maxlen: int) -> None:
if self._span_recorder is None:
self._span_recorder = _SpanRecorder(maxlen)
@property
def trace_id(self) -> str:
if not self._trace_id:
self._trace_id = uuid.uuid4().hex
return self._trace_id
@trace_id.setter
def trace_id(self, value: str) -> None:
self._trace_id = value
@property
def span_id(self) -> str:
if not self._span_id:
self._span_id = uuid.uuid4().hex[16:]
return self._span_id
@span_id.setter
def span_id(self, value: str) -> None:
self._span_id = value
def __repr__(self) -> str:
return (
"<%s(op=%r, description:%r, trace_id=%r, span_id=%r, parent_span_id=%r, sampled=%r, origin=%r)>"
% (
self.__class__.__name__,
self.op,
self.description,
self.trace_id,
self.span_id,
self.parent_span_id,
self.sampled,
self.origin,
)
)
def __enter__(self) -> "Span":
scope = self.scope or sentry_sdk.get_current_scope()
old_span = scope.span
scope.span = self
self._context_manager_state = (scope, old_span)
return self
def __exit__(
self, ty: "Optional[Any]", value: "Optional[Any]", tb: "Optional[Any]"
) -> None:
if value is not None and should_be_treated_as_error(ty, value):
self.set_status(SPANSTATUS.INTERNAL_ERROR)
with capture_internal_exceptions():
scope, old_span = self._context_manager_state
del self._context_manager_state
self.finish(scope)
scope.span = old_span
@property
def containing_transaction(self) -> "Optional[Transaction]":
"""The ``Transaction`` that this span belongs to.
The ``Transaction`` is the root of the span tree,
so one could also think of this ``Transaction`` as the "root span"."""
# this is a getter rather than a regular attribute so that transactions
# can return `self` here instead (as a way to prevent them circularly
# referencing themselves)
return self._containing_transaction
def start_child(
self, instrumenter: str = INSTRUMENTER.SENTRY, **kwargs: "Any"
) -> "Span":
"""
Start a sub-span from the current span or transaction.
Takes the same arguments as the initializer of :py:class:`Span`. The
trace id, sampling decision, transaction pointer, and span recorder are
inherited from the current span/transaction.
The instrumenter parameter is deprecated for user code, and it will
be removed in the next major version. Going forward, it should only
be used by the SDK itself.
"""
if kwargs.get("description") is not None:
warnings.warn(
"The `description` parameter is deprecated. Please use `name` instead.",
DeprecationWarning,
stacklevel=2,
)
configuration_instrumenter = sentry_sdk.get_client().options["instrumenter"]
if instrumenter != configuration_instrumenter:
return NoOpSpan()
kwargs.setdefault("sampled", self.sampled)
child = Span(
trace_id=self.trace_id,
parent_span_id=self.span_id,
containing_transaction=self.containing_transaction,
**kwargs,
)
span_recorder = (
self.containing_transaction and self.containing_transaction._span_recorder
)
if span_recorder:
span_recorder.add(child)
return child
@classmethod
def continue_from_environ(
cls,
environ: "Mapping[str, str]",
**kwargs: "Any",
) -> "Transaction":
"""
DEPRECATED: Use :py:meth:`sentry_sdk.continue_trace`.
Create a Transaction with the given params, then add in data pulled from
the ``sentry-trace`` and ``baggage`` headers from the environ (if any)
before returning the Transaction.
This is different from :py:meth:`~sentry_sdk.tracing.Span.continue_from_headers`
in that it assumes header names in the form ``HTTP_HEADER_NAME`` -
such as you would get from a WSGI/ASGI environ -
rather than the form ``header-name``.
:param environ: The ASGI/WSGI environ to pull information from.
"""
return Transaction.continue_from_headers(EnvironHeaders(environ), **kwargs)
@classmethod
def continue_from_headers(
cls,
headers: "Mapping[str, str]",
*,
_sample_rand: "Optional[str]" = None,
**kwargs: "Any",
) -> "Transaction":
"""
DEPRECATED: Use :py:meth:`sentry_sdk.continue_trace`.
Create a transaction with the given params (including any data pulled from
the ``sentry-trace`` and ``baggage`` headers).
:param headers: The dictionary with the HTTP headers to pull information from.
:param _sample_rand: If provided, we override the sample_rand value from the
incoming headers with this value. (internal use only)
"""
logger.warning("Deprecated: use sentry_sdk.continue_trace instead.")
# TODO-neel move away from this kwargs stuff, it's confusing and opaque
# make more explicit
baggage = Baggage.from_incoming_header(
headers.get(BAGGAGE_HEADER_NAME), _sample_rand=_sample_rand
)
kwargs.update({BAGGAGE_HEADER_NAME: baggage})
sentrytrace_kwargs = extract_sentrytrace_data(
headers.get(SENTRY_TRACE_HEADER_NAME)
)
if sentrytrace_kwargs is not None:
kwargs.update(sentrytrace_kwargs)
# If there's an incoming sentry-trace but no incoming baggage header,
# for instance in traces coming from older SDKs,
# baggage will be empty and immutable and won't be populated as head SDK.
baggage.freeze()
transaction = Transaction(**kwargs)
transaction.same_process_as_parent = False
return transaction
def iter_headers(self) -> "Iterator[Tuple[str, str]]":
"""
Creates a generator which returns the span's ``sentry-trace`` and ``baggage`` headers.
If the span's containing transaction doesn't yet have a ``baggage`` value,
this will cause one to be generated and stored.
"""
if not self.containing_transaction:
# Do not propagate headers if there is no containing transaction. Otherwise, this
# span ends up being the root span of a new trace, and since it does not get sent
# to Sentry, the trace will be missing a root transaction. The dynamic sampling
# context will also be missing, breaking dynamic sampling & traces.
return
yield SENTRY_TRACE_HEADER_NAME, self.to_traceparent()
baggage = self.containing_transaction.get_baggage().serialize()
if baggage:
yield BAGGAGE_HEADER_NAME, baggage
@classmethod
def from_traceparent(
cls,
traceparent: "Optional[str]",
**kwargs: "Any",
) -> "Optional[Transaction]":
"""
DEPRECATED: Use :py:meth:`sentry_sdk.continue_trace`.
Create a ``Transaction`` with the given params, then add in data pulled from
the given ``sentry-trace`` header value before returning the ``Transaction``.
"""
if not traceparent:
return None
return cls.continue_from_headers(
{SENTRY_TRACE_HEADER_NAME: traceparent}, **kwargs
)
def to_traceparent(self) -> str:
if self.sampled is True:
sampled = "1"
elif self.sampled is False:
sampled = "0"
else:
sampled = None
traceparent = "%s-%s" % (self.trace_id, self.span_id)
if sampled is not None:
traceparent += "-%s" % (sampled,)
return traceparent
def to_baggage(self) -> "Optional[Baggage]":
"""Returns the :py:class:`~sentry_sdk.tracing_utils.Baggage`
associated with this ``Span``, if any. (Taken from the root of the span tree.)
"""
if self.containing_transaction:
return self.containing_transaction.get_baggage()
return None
def set_tag(self, key: str, value: "Any") -> None:
self._tags[key] = value
def set_data(self, key: str, value: "Any") -> None:
self._data[key] = value
def update_data(self, data: "Dict[str, Any]") -> None:
self._data.update(data)
def set_flag(self, flag: str, result: bool) -> None:
if len(self._flags) < self._flags_capacity:
self._flags[flag] = result
def set_status(self, value: str) -> None:
self.status = value
def set_measurement(
self, name: str, value: float, unit: "MeasurementUnit" = ""
) -> None:
"""
.. deprecated:: 2.28.0
This function is deprecated and will be removed in the next major release.
"""
warnings.warn(
"`set_measurement()` is deprecated and will be removed in the next major version. Please use `set_data()` instead.",
DeprecationWarning,
stacklevel=2,
)
self._measurements[name] = {"value": value, "unit": unit}
def set_thread(
self, thread_id: "Optional[int]", thread_name: "Optional[str]"
) -> None:
if thread_id is not None:
self.set_data(SPANDATA.THREAD_ID, str(thread_id))
if thread_name is not None:
self.set_data(SPANDATA.THREAD_NAME, thread_name)
def set_profiler_id(self, profiler_id: "Optional[str]") -> None:
if profiler_id is not None:
self.set_data(SPANDATA.PROFILER_ID, profiler_id)
def set_http_status(self, http_status: int) -> None:
self.set_tag(
"http.status_code", str(http_status)
) # TODO-neel remove in major, we keep this for backwards compatibility
self.set_data(SPANDATA.HTTP_STATUS_CODE, http_status)
self.set_status(get_span_status_from_http_code(http_status))
def is_success(self) -> bool:
return self.status == "ok"
def finish(
self,
scope: "Optional[sentry_sdk.Scope]" = None,
end_timestamp: "Optional[Union[float, datetime]]" = None,
) -> "Optional[str]":
"""
Sets the end timestamp of the span.
Additionally it also creates a breadcrumb from the span,
if the span represents a database or HTTP request.
:param scope: The scope to use for this transaction.
If not provided, the current scope will be used.
:param end_timestamp: Optional timestamp that should
be used as timestamp instead of the current time.
:return: Always ``None``. The type is ``Optional[str]`` to match
the return value of :py:meth:`sentry_sdk.tracing.Transaction.finish`.
"""
if self.timestamp is not None:
# This span is already finished, ignore.
return None
try:
if end_timestamp:
if isinstance(end_timestamp, float):
end_timestamp = datetime.fromtimestamp(end_timestamp, timezone.utc)
self.timestamp = end_timestamp
else:
elapsed = nanosecond_time() - self._start_timestamp_monotonic_ns
self.timestamp = self.start_timestamp + timedelta(
microseconds=elapsed / 1000
)
except AttributeError:
self.timestamp = datetime.now(timezone.utc)
scope = scope or sentry_sdk.get_current_scope()
# Copy conversation_id from scope to span data if this is an AI span
conversation_id = scope.get_conversation_id()
if conversation_id:
has_ai_op = SPANDATA.GEN_AI_OPERATION_NAME in self._data
is_ai_span_op = self.op is not None and (
self.op.startswith("ai.") or self.op.startswith("gen_ai.")
)
if has_ai_op or is_ai_span_op:
self.set_data("gen_ai.conversation.id", conversation_id)
maybe_create_breadcrumbs_from_span(scope, self)
return None
def to_json(self) -> "Dict[str, Any]":
"""Returns a JSON-compatible representation of the span."""
rv: "Dict[str, Any]" = {
"trace_id": self.trace_id,
"span_id": self.span_id,
"parent_span_id": self.parent_span_id,
"same_process_as_parent": self.same_process_as_parent,
"op": self.op,
"description": self.description,
"start_timestamp": self.start_timestamp,
"timestamp": self.timestamp,
"origin": self.origin,
}
if self.status:
rv["status"] = self.status
# TODO-neel remove redundant tag in major
self._tags["status"] = self.status
if len(self._measurements) > 0:
rv["measurements"] = self._measurements
tags = self._tags
if tags:
rv["tags"] = tags
data = {}
data.update(self._flags)
data.update(self._data)
if data:
rv["data"] = data
return rv
def get_trace_context(self) -> "Any":
rv: "Dict[str, Any]" = {
"trace_id": self.trace_id,
"span_id": self.span_id,
"parent_span_id": self.parent_span_id,
"op": self.op,
"description": self.description,
"origin": self.origin,
}
if self.status:
rv["status"] = self.status
if self.containing_transaction:
rv["dynamic_sampling_context"] = (
self.containing_transaction.get_baggage().dynamic_sampling_context()
)
data = {}
thread_id = self._data.get(SPANDATA.THREAD_ID)
if thread_id is not None:
data["thread.id"] = thread_id
thread_name = self._data.get(SPANDATA.THREAD_NAME)
if thread_name is not None:
data["thread.name"] = thread_name
if data:
rv["data"] = data
return rv
def get_profile_context(self) -> "Optional[ProfileContext]":
profiler_id = self._data.get(SPANDATA.PROFILER_ID)
if profiler_id is None:
return None
return {
"profiler_id": profiler_id,
}
def update_active_thread(self) -> None:
thread_id, thread_name = get_current_thread_meta()
self.set_thread(thread_id, thread_name)
# Private aliases matching StreamedSpan's private API
_to_traceparent = to_traceparent
_to_baggage = to_baggage
_iter_headers = iter_headers
_get_trace_context = get_trace_context
class Transaction(Span):
"""The Transaction is the root element that holds all the spans
for Sentry performance instrumentation.
:param name: Identifier of the transaction.
Will show up in the Sentry UI.
:param parent_sampled: Whether the parent transaction was sampled.
If True this transaction will be kept, if False it will be discarded.
:param baggage: The W3C baggage header value.
(see https://www.w3.org/TR/baggage/)
:param source: A string describing the source of the transaction name.
This will be used to determine the transaction's type.
See https://develop.sentry.dev/sdk/event-payloads/transaction/#transaction-annotations
for more information. Default "custom".
:param kwargs: Additional arguments to be passed to the Span constructor.
See :py:class:`sentry_sdk.tracing.Span` for available arguments.
"""
__slots__ = (
"name",
"source",
"parent_sampled",
# used to create baggage value for head SDKs in dynamic sampling
"sample_rate",
"_measurements",
"_contexts",
"_profile",
"_continuous_profile",
"_baggage",
"_sample_rand",
)
def __init__( # type: ignore[misc]
self,
name: str = "",
parent_sampled: "Optional[bool]" = None,
baggage: "Optional[Baggage]" = None,
source: str = TransactionSource.CUSTOM,
**kwargs: "Unpack[SpanKwargs]",
) -> None:
super().__init__(**kwargs)
self.name = name
self.source = source
self.sample_rate: "Optional[float]" = None
self.parent_sampled = parent_sampled
self._measurements: "Dict[str, MeasurementValue]" = {}
self._contexts: "Dict[str, Any]" = {}
self._profile: "Optional[Profile]" = None
self._continuous_profile: "Optional[ContinuousProfile]" = None
self._baggage = baggage
baggage_sample_rand = (
None if self._baggage is None else self._baggage._sample_rand()
)
if baggage_sample_rand is not None:
self._sample_rand = baggage_sample_rand
else:
self._sample_rand = _generate_sample_rand(self.trace_id)
def __repr__(self) -> str:
return (
"<%s(name=%r, op=%r, trace_id=%r, span_id=%r, parent_span_id=%r, sampled=%r, source=%r, origin=%r)>"
% (
self.__class__.__name__,
self.name,
self.op,
self.trace_id,
self.span_id,
self.parent_span_id,
self.sampled,
self.source,
self.origin,
)
)
def _possibly_started(self) -> bool:
"""Returns whether the transaction might have been started.
If this returns False, we know that the transaction was not started
with sentry_sdk.start_transaction, and therefore the transaction will
be discarded.
"""
# We must explicitly check self.sampled is False since self.sampled can be None
return self._span_recorder is not None or self.sampled is False
def __enter__(self) -> "Transaction":
if not self._possibly_started():
logger.debug(
"Transaction was entered without being started with sentry_sdk.start_transaction."
"The transaction will not be sent to Sentry. To fix, start the transaction by"
"passing it to sentry_sdk.start_transaction."
)
super().__enter__()
if self._profile is not None:
self._profile.__enter__()
return self
def __exit__(
self, ty: "Optional[Any]", value: "Optional[Any]", tb: "Optional[Any]"
) -> None:
if self._profile is not None:
self._profile.__exit__(ty, value, tb)
if self._continuous_profile is not None:
self._continuous_profile.stop()
super().__exit__(ty, value, tb)
@property
def containing_transaction(self) -> "Transaction":
"""The root element of the span tree.
In the case of a transaction it is the transaction itself.
"""
# Transactions (as spans) belong to themselves (as transactions). This
# is a getter rather than a regular attribute to avoid having a circular
# reference.
return self
def _get_scope_from_finish_args(
self,
scope_arg: "Optional[Union[sentry_sdk.Scope, sentry_sdk.Hub]]",
hub_arg: "Optional[Union[sentry_sdk.Scope, sentry_sdk.Hub]]",
) -> "Optional[sentry_sdk.Scope]":
"""
Logic to get the scope from the arguments passed to finish. This
function exists for backwards compatibility with the old finish.
TODO: Remove this function in the next major version.
"""
scope_or_hub = scope_arg
if hub_arg is not None:
warnings.warn(
"The `hub` parameter is deprecated. Please use the `scope` parameter, instead.",
DeprecationWarning,
stacklevel=3,
)
scope_or_hub = hub_arg
if isinstance(scope_or_hub, sentry_sdk.Hub):
warnings.warn(
"Passing a Hub to finish is deprecated. Please pass a Scope, instead.",
DeprecationWarning,
stacklevel=3,
)
return scope_or_hub.scope
return scope_or_hub
def _get_log_representation(self) -> str:
return "{op}transaction <{name}>".format(
op=("<" + self.op + "> " if self.op else ""), name=self.name
)
def finish(
self,
scope: "Optional[sentry_sdk.Scope]" = None,
end_timestamp: "Optional[Union[float, datetime]]" = None,
*,
hub: "Optional[sentry_sdk.Hub]" = None,
) -> "Optional[str]":
"""Finishes the transaction and sends it to Sentry.
All finished spans in the transaction will also be sent to Sentry.
:param scope: The Scope to use for this transaction.
If not provided, the current Scope will be used.
:param end_timestamp: Optional timestamp that should
be used as timestamp instead of the current time.
:param hub: The hub to use for this transaction.
This argument is DEPRECATED. Please use the `scope`
parameter, instead.
:return: The event ID if the transaction was sent to Sentry,
otherwise None.
"""
if self.timestamp is not None:
# This transaction is already finished, ignore.
return None
# For backwards compatibility, we must handle the case where `scope`
# or `hub` could both either be a `Scope` or a `Hub`.
scope: "Optional[sentry_sdk.Scope]" = self._get_scope_from_finish_args(
scope, hub
)
scope = scope or self.scope or sentry_sdk.get_current_scope()
client = sentry_sdk.get_client()
if not client.is_active():
# We have no active client and therefore nowhere to send this transaction.
return None
if self._span_recorder is None:
# Explicit check against False needed because self.sampled might be None
if self.sampled is False:
logger.debug("Discarding transaction because sampled = False")
else:
logger.debug(
"Discarding transaction because it was not started with sentry_sdk.start_transaction"
)
# This is not entirely accurate because discards here are not
# exclusively based on sample rate but also traces sampler, but
# we handle this the same here.
if client.transport and has_tracing_enabled(client.options):
if client.monitor and client.monitor.downsample_factor > 0:
reason = "backpressure"
else:
reason = "sample_rate"
client.transport.record_lost_event(reason, data_category="transaction")
# Only one span (the transaction itself) is discarded, since we did not record any spans here.
client.transport.record_lost_event(reason, data_category="span")