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import contextlib
import inspect
import os
import re
import sys
from collections.abc import Mapping
from datetime import timedelta
from functools import wraps
from urllib.parse import quote, unquote
import uuid
import sentry_sdk
from sentry_sdk.consts import OP, SPANDATA
from sentry_sdk.utils import (
capture_internal_exceptions,
filename_for_module,
Dsn,
logger,
match_regex_list,
qualname_from_function,
to_string,
is_sentry_url,
_is_external_source,
_module_in_list,
)
from sentry_sdk._types import TYPE_CHECKING
if TYPE_CHECKING:
from typing import Any
from typing import Dict
from typing import Generator
from typing import Optional
from typing import Union
from types import FrameType
SENTRY_TRACE_REGEX = re.compile(
"^[ \t]*" # whitespace
"([0-9a-f]{32})?" # trace_id
"-?([0-9a-f]{16})?" # span_id
"-?([01])?" # sampled
"[ \t]*$" # whitespace
)
# This is a normal base64 regex, modified to reflect that fact that we strip the
# trailing = or == off
base64_stripped = (
# any of the characters in the base64 "alphabet", in multiples of 4
"([a-zA-Z0-9+/]{4})*"
# either nothing or 2 or 3 base64-alphabet characters (see
# https://en.wikipedia.org/wiki/Base64#Decoding_Base64_without_padding for
# why there's never only 1 extra character)
"([a-zA-Z0-9+/]{2,3})?"
)
class EnvironHeaders(Mapping): # type: ignore
def __init__(
self,
environ, # type: Mapping[str, str]
prefix="HTTP_", # type: str
):
# type: (...) -> None
self.environ = environ
self.prefix = prefix
def __getitem__(self, key):
# type: (str) -> Optional[Any]
return self.environ[self.prefix + key.replace("-", "_").upper()]
def __len__(self):
# type: () -> int
return sum(1 for _ in iter(self))
def __iter__(self):
# type: () -> Generator[str, None, None]
for k in self.environ:
if not isinstance(k, str):
continue
k = k.replace("-", "_").upper()
if not k.startswith(self.prefix):
continue
yield k[len(self.prefix) :]
def has_tracing_enabled(options):
# type: (Optional[Dict[str, Any]]) -> bool
"""
Returns True if either traces_sample_rate or traces_sampler is
defined and enable_tracing is set and not false.
"""
if options is None:
return False
return bool(
options.get("enable_tracing") is not False
and (
options.get("traces_sample_rate") is not None
or options.get("traces_sampler") is not None
)
)
@contextlib.contextmanager
def record_sql_queries(
cursor, # type: Any
query, # type: Any
params_list, # type: Any
paramstyle, # type: Optional[str]
executemany, # type: bool
record_cursor_repr=False, # type: bool
span_origin="manual", # type: str
):
# type: (...) -> Generator[sentry_sdk.tracing.Span, None, None]
# TODO: Bring back capturing of params by default
if sentry_sdk.get_client().options["_experiments"].get("record_sql_params", False):
if not params_list or params_list == [None]:
params_list = None
if paramstyle == "pyformat":
paramstyle = "format"
else:
params_list = None
paramstyle = None
query = _format_sql(cursor, query)
data = {}
if params_list is not None:
data["db.params"] = params_list
if paramstyle is not None:
data["db.paramstyle"] = paramstyle
if executemany:
data["db.executemany"] = True
if record_cursor_repr and cursor is not None:
data["db.cursor"] = cursor
with capture_internal_exceptions():
sentry_sdk.add_breadcrumb(message=query, category="query", data=data)
with sentry_sdk.start_span(
op=OP.DB,
description=query,
origin=span_origin,
) as span:
for k, v in data.items():
span.set_data(k, v)
yield span
def maybe_create_breadcrumbs_from_span(scope, span):
# type: (sentry_sdk.Scope, sentry_sdk.tracing.Span) -> None
if span.op == OP.DB_REDIS:
scope.add_breadcrumb(
message=span.description, type="redis", category="redis", data=span._tags
)
elif span.op == OP.HTTP_CLIENT:
scope.add_breadcrumb(type="http", category="httplib", data=span._data)
elif span.op == "subprocess":
scope.add_breadcrumb(
type="subprocess",
category="subprocess",
message=span.description,
data=span._data,
)
def add_query_source(span):
# type: (sentry_sdk.tracing.Span) -> None
"""
Adds OTel compatible source code information to the span
"""
client = sentry_sdk.get_client()
if not client.is_active():
return
if span.timestamp is None or span.start_timestamp is None:
return
should_add_query_source = client.options.get("enable_db_query_source", True)
if not should_add_query_source:
return
duration = span.timestamp - span.start_timestamp
threshold = client.options.get("db_query_source_threshold_ms", 0)
slow_query = duration / timedelta(milliseconds=1) > threshold
if not slow_query:
return
project_root = client.options["project_root"]
in_app_include = client.options.get("in_app_include")
in_app_exclude = client.options.get("in_app_exclude")
# Find the correct frame
frame = sys._getframe() # type: Union[FrameType, None]
while frame is not None:
try:
abs_path = frame.f_code.co_filename
except Exception:
abs_path = ""
try:
namespace = frame.f_globals.get("__name__") # type: Optional[str]
except Exception:
namespace = None
is_sentry_sdk_frame = namespace is not None and namespace.startswith(
"sentry_sdk."
)
should_be_included = not _is_external_source(abs_path)
if namespace is not None:
if in_app_exclude and _module_in_list(namespace, in_app_exclude):
should_be_included = False
if in_app_include and _module_in_list(namespace, in_app_include):
# in_app_include takes precedence over in_app_exclude, so doing it
# at the end
should_be_included = True
if (
abs_path.startswith(project_root)
and should_be_included
and not is_sentry_sdk_frame
):
break
frame = frame.f_back
else:
frame = None
# Set the data
if frame is not None:
try:
lineno = frame.f_lineno
except Exception:
lineno = None
if lineno is not None:
span.set_data(SPANDATA.CODE_LINENO, frame.f_lineno)
try:
namespace = frame.f_globals.get("__name__")
except Exception:
namespace = None
if namespace is not None:
span.set_data(SPANDATA.CODE_NAMESPACE, namespace)
try:
filepath = frame.f_code.co_filename
except Exception:
filepath = None
if filepath is not None:
if namespace is not None:
in_app_path = filename_for_module(namespace, filepath)
elif project_root is not None and filepath.startswith(project_root):
in_app_path = filepath.replace(project_root, "").lstrip(os.sep)
else:
in_app_path = filepath
span.set_data(SPANDATA.CODE_FILEPATH, in_app_path)
try:
code_function = frame.f_code.co_name
except Exception:
code_function = None
if code_function is not None:
span.set_data(SPANDATA.CODE_FUNCTION, frame.f_code.co_name)
def extract_sentrytrace_data(header):
# type: (Optional[str]) -> Optional[Dict[str, Union[str, bool, None]]]
"""
Given a `sentry-trace` header string, return a dictionary of data.
"""
if not header:
return None
if header.startswith("00-") and header.endswith("-00"):
header = header[3:-3]
match = SENTRY_TRACE_REGEX.match(header)
if not match:
return None
trace_id, parent_span_id, sampled_str = match.groups()
parent_sampled = None
if trace_id:
trace_id = "{:032x}".format(int(trace_id, 16))
if parent_span_id:
parent_span_id = "{:016x}".format(int(parent_span_id, 16))
if sampled_str:
parent_sampled = sampled_str != "0"
return {
"trace_id": trace_id,
"parent_span_id": parent_span_id,
"parent_sampled": parent_sampled,
}
def _format_sql(cursor, sql):
# type: (Any, str) -> Optional[str]
real_sql = None
# If we're using psycopg2, it could be that we're
# looking at a query that uses Composed objects. Use psycopg2's mogrify
# function to format the query. We lose per-parameter trimming but gain
# accuracy in formatting.
try:
if hasattr(cursor, "mogrify"):
real_sql = cursor.mogrify(sql)
if isinstance(real_sql, bytes):
real_sql = real_sql.decode(cursor.connection.encoding)
except Exception:
real_sql = None
return real_sql or to_string(sql)
class PropagationContext:
"""
The PropagationContext represents the data of a trace in Sentry.
"""
__slots__ = (
"_trace_id",
"_span_id",
"parent_span_id",
"parent_sampled",
"dynamic_sampling_context",
)
def __init__(
self,
trace_id=None, # type: Optional[str]
span_id=None, # type: Optional[str]
parent_span_id=None, # type: Optional[str]
parent_sampled=None, # type: Optional[bool]
dynamic_sampling_context=None, # type: Optional[Dict[str, str]]
):
# type: (...) -> None
self._trace_id = trace_id
"""The trace id of the Sentry trace."""
self._span_id = span_id
"""The span id of the currently executing span."""
self.parent_span_id = parent_span_id
"""The id of the parent span that started this span.
The parent span could also be a span in an upstream service."""
self.parent_sampled = parent_sampled
"""Boolean indicator if the parent span was sampled.
Important when the parent span originated in an upstream service,
because we watn to sample the whole trace, or nothing from the trace."""
self.dynamic_sampling_context = dynamic_sampling_context
"""Data that is used for dynamic sampling decisions."""
@classmethod
def from_incoming_data(cls, incoming_data):
# type: (Dict[str, Any]) -> Optional[PropagationContext]
propagation_context = None
normalized_data = normalize_incoming_data(incoming_data)
baggage_header = normalized_data.get(BAGGAGE_HEADER_NAME)
if baggage_header:
propagation_context = PropagationContext()
propagation_context.dynamic_sampling_context = Baggage.from_incoming_header(
baggage_header
).dynamic_sampling_context()
sentry_trace_header = normalized_data.get(SENTRY_TRACE_HEADER_NAME)
if sentry_trace_header:
sentrytrace_data = extract_sentrytrace_data(sentry_trace_header)
if sentrytrace_data is not None:
if propagation_context is None:
propagation_context = PropagationContext()
propagation_context.update(sentrytrace_data)
return propagation_context
@property
def trace_id(self):
# type: () -> str
"""The trace id of the Sentry trace."""
if not self._trace_id:
self._trace_id = uuid.uuid4().hex
return self._trace_id
@trace_id.setter
def trace_id(self, value):
# type: (str) -> None
self._trace_id = value
@property
def span_id(self):
# type: () -> str
"""The span id of the currently executed span."""
if not self._span_id:
self._span_id = uuid.uuid4().hex[16:]
return self._span_id
@span_id.setter
def span_id(self, value):
# type: (str) -> None
self._span_id = value
def update(self, other_dict):
# type: (Dict[str, Any]) -> None
"""
Updates the PropagationContext with data from the given dictionary.
"""
for key, value in other_dict.items():
try:
setattr(self, key, value)
except AttributeError:
pass
def __repr__(self):
# type: (...) -> str
return "<PropagationContext _trace_id={} _span_id={} parent_span_id={} parent_sampled={} dynamic_sampling_context={}>".format(
self._trace_id,
self._span_id,
self.parent_span_id,
self.parent_sampled,
self.dynamic_sampling_context,
)
class Baggage:
"""
The W3C Baggage header information (see https://www.w3.org/TR/baggage/).
"""
__slots__ = ("sentry_items", "third_party_items", "mutable")
SENTRY_PREFIX = "sentry-"
SENTRY_PREFIX_REGEX = re.compile("^sentry-")
def __init__(
self,
sentry_items, # type: Dict[str, str]
third_party_items="", # type: str
mutable=True, # type: bool
):
self.sentry_items = sentry_items
self.third_party_items = third_party_items
self.mutable = mutable
@classmethod
def from_incoming_header(cls, header):
# type: (Optional[str]) -> Baggage
"""
freeze if incoming header already has sentry baggage
"""
sentry_items = {}
third_party_items = ""
mutable = True
if header:
for item in header.split(","):
if "=" not in item:
continue
with capture_internal_exceptions():
item = item.strip()
key, val = item.split("=")
if Baggage.SENTRY_PREFIX_REGEX.match(key):
baggage_key = unquote(key.split("-")[1])
sentry_items[baggage_key] = unquote(val)
mutable = False
else:
third_party_items += ("," if third_party_items else "") + item
return Baggage(sentry_items, third_party_items, mutable)
@classmethod
def from_options(cls, scope):
# type: (sentry_sdk.scope.Scope) -> Optional[Baggage]
sentry_items = {} # type: Dict[str, str]
third_party_items = ""
mutable = False
client = sentry_sdk.get_client()
if not client.is_active() or scope._propagation_context is None:
return Baggage(sentry_items)
options = client.options
propagation_context = scope._propagation_context
if propagation_context is not None:
sentry_items["trace_id"] = propagation_context.trace_id
if options.get("environment"):
sentry_items["environment"] = options["environment"]
if options.get("release"):
sentry_items["release"] = options["release"]
if options.get("dsn"):
sentry_items["public_key"] = Dsn(options["dsn"]).public_key
if options.get("traces_sample_rate"):
sentry_items["sample_rate"] = options["traces_sample_rate"]
return Baggage(sentry_items, third_party_items, mutable)
@classmethod
def populate_from_transaction(cls, transaction):
# type: (sentry_sdk.tracing.Transaction) -> Baggage
"""
Populate fresh baggage entry with sentry_items and make it immutable
if this is the head SDK which originates traces.
"""
client = sentry_sdk.get_client()
sentry_items = {} # type: Dict[str, str]
if not client.is_active():
return Baggage(sentry_items)
options = client.options or {}
sentry_items["trace_id"] = transaction.trace_id
if options.get("environment"):
sentry_items["environment"] = options["environment"]
if options.get("release"):
sentry_items["release"] = options["release"]
if options.get("dsn"):
sentry_items["public_key"] = Dsn(options["dsn"]).public_key
if (
transaction.name
and transaction.source not in LOW_QUALITY_TRANSACTION_SOURCES
):
sentry_items["transaction"] = transaction.name
if transaction.sample_rate is not None:
sentry_items["sample_rate"] = str(transaction.sample_rate)
if transaction.sampled is not None:
sentry_items["sampled"] = "true" if transaction.sampled else "false"
# there's an existing baggage but it was mutable,
# which is why we are creating this new baggage.
# However, if by chance the user put some sentry items in there, give them precedence.
if transaction._baggage and transaction._baggage.sentry_items:
sentry_items.update(transaction._baggage.sentry_items)
return Baggage(sentry_items, mutable=False)
def freeze(self):
# type: () -> None
self.mutable = False
def dynamic_sampling_context(self):
# type: () -> Dict[str, str]
header = {}
for key, item in self.sentry_items.items():
header[key] = item
return header
def serialize(self, include_third_party=False):
# type: (bool) -> str
items = []
for key, val in self.sentry_items.items():
with capture_internal_exceptions():
item = Baggage.SENTRY_PREFIX + quote(key) + "=" + quote(str(val))
items.append(item)
if include_third_party:
items.append(self.third_party_items)
return ",".join(items)
def should_propagate_trace(client, url):
# type: (sentry_sdk.client.BaseClient, str) -> bool
"""
Returns True if url matches trace_propagation_targets configured in the given client. Otherwise, returns False.
"""
trace_propagation_targets = client.options["trace_propagation_targets"]
if is_sentry_url(client, url):
return False
return match_regex_list(url, trace_propagation_targets, substring_matching=True)
def normalize_incoming_data(incoming_data):
# type: (Dict[str, Any]) -> Dict[str, Any]
"""
Normalizes incoming data so the keys are all lowercase with dashes instead of underscores and stripped from known prefixes.
"""
data = {}
for key, value in incoming_data.items():
if key.startswith("HTTP_"):
key = key[5:]
key = key.replace("_", "-").lower()
data[key] = value
return data
def start_child_span_decorator(func):
# type: (Any) -> Any
"""
Decorator to add child spans for functions.
See also ``sentry_sdk.tracing.trace()``.
"""
# Asynchronous case
if inspect.iscoroutinefunction(func):
@wraps(func)
async def func_with_tracing(*args, **kwargs):
# type: (*Any, **Any) -> Any
span = get_current_span()
if span is None:
logger.debug(
"Cannot create a child span for %s. "
"Please start a Sentry transaction before calling this function.",
qualname_from_function(func),
)
return await func(*args, **kwargs)
with span.start_child(
op=OP.FUNCTION,
description=qualname_from_function(func),
):
return await func(*args, **kwargs)
try:
func_with_tracing.__signature__ = inspect.signature(func) # type: ignore[attr-defined]
except Exception:
pass
# Synchronous case
else:
@wraps(func)
def func_with_tracing(*args, **kwargs):
# type: (*Any, **Any) -> Any
span = get_current_span()
if span is None:
logger.debug(
"Cannot create a child span for %s. "
"Please start a Sentry transaction before calling this function.",
qualname_from_function(func),
)
return func(*args, **kwargs)
with span.start_child(
op=OP.FUNCTION,
description=qualname_from_function(func),
):
return func(*args, **kwargs)
try:
func_with_tracing.__signature__ = inspect.signature(func) # type: ignore[attr-defined]
except Exception:
pass
return func_with_tracing
def get_current_span(scope=None):
# type: (Optional[sentry_sdk.Scope]) -> Optional[Span]
"""
Returns the currently active span if there is one running, otherwise `None`
"""
scope = scope or sentry_sdk.get_current_scope()
current_span = scope.span
return current_span
# Circular imports
from sentry_sdk.tracing import (
BAGGAGE_HEADER_NAME,
LOW_QUALITY_TRANSACTION_SOURCES,
SENTRY_TRACE_HEADER_NAME,
)
if TYPE_CHECKING:
from sentry_sdk.tracing import Span
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