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from abc import ABC, abstractmethod
import io
import os
import gzip
import socket
import time
import warnings
from datetime import datetime, timedelta, timezone
from collections import defaultdict
from urllib.request import getproxies
import urllib3
import certifi
import sentry_sdk
from sentry_sdk.consts import EndpointType
from sentry_sdk.utils import Dsn, logger, capture_internal_exceptions
from sentry_sdk.worker import BackgroundWorker
from sentry_sdk.envelope import Envelope, Item, PayloadRef
from sentry_sdk._types import TYPE_CHECKING
if TYPE_CHECKING:
from typing import Any
from typing import Callable
from typing import Dict
from typing import Iterable
from typing import List
from typing import Optional
from typing import Tuple
from typing import Type
from typing import Union
from typing import DefaultDict
from urllib3.poolmanager import PoolManager
from urllib3.poolmanager import ProxyManager
from sentry_sdk._types import Event, EventDataCategory
KEEP_ALIVE_SOCKET_OPTIONS = []
for option in [
(socket.SOL_SOCKET, lambda: getattr(socket, "SO_KEEPALIVE"), 1), # noqa: B009
(socket.SOL_TCP, lambda: getattr(socket, "TCP_KEEPIDLE"), 45), # noqa: B009
(socket.SOL_TCP, lambda: getattr(socket, "TCP_KEEPINTVL"), 10), # noqa: B009
(socket.SOL_TCP, lambda: getattr(socket, "TCP_KEEPCNT"), 6), # noqa: B009
]:
try:
KEEP_ALIVE_SOCKET_OPTIONS.append((option[0], option[1](), option[2]))
except AttributeError:
# a specific option might not be available on specific systems,
# e.g. TCP_KEEPIDLE doesn't exist on macOS
pass
class Transport(ABC):
"""Baseclass for all transports.
A transport is used to send an event to sentry.
"""
parsed_dsn = None # type: Optional[Dsn]
def __init__(
self, options=None # type: Optional[Dict[str, Any]]
):
# type: (...) -> None
self.options = options
if options and options["dsn"] is not None and options["dsn"]:
self.parsed_dsn = Dsn(options["dsn"])
else:
self.parsed_dsn = None
def capture_event(
self, event # type: Event
):
# type: (...) -> None
"""
DEPRECATED: Please use capture_envelope instead.
This gets invoked with the event dictionary when an event should
be sent to sentry.
"""
warnings.warn(
"capture_event is deprecated, please use capture_envelope instead!",
DeprecationWarning,
stacklevel=2,
)
envelope = Envelope()
envelope.add_event(event)
self.capture_envelope(envelope)
@abstractmethod
def capture_envelope(
self, envelope # type: Envelope
):
# type: (...) -> None
"""
Send an envelope to Sentry.
Envelopes are a data container format that can hold any type of data
submitted to Sentry. We use it to send all event data (including errors,
transactions, crons checkins, etc.) to Sentry.
"""
pass
def flush(
self,
timeout, # type: float
callback=None, # type: Optional[Any]
):
# type: (...) -> None
"""
Wait `timeout` seconds for the current events to be sent out.
The default implementation is a no-op, since this method may only be relevant to some transports.
Subclasses should override this method if necessary.
"""
return None
def kill(self):
# type: () -> None
"""
Forcefully kills the transport.
The default implementation is a no-op, since this method may only be relevant to some transports.
Subclasses should override this method if necessary.
"""
return None
def record_lost_event(
self,
reason, # type: str
data_category=None, # type: Optional[EventDataCategory]
item=None, # type: Optional[Item]
*,
quantity=1, # type: int
):
# type: (...) -> None
"""This increments a counter for event loss by reason and
data category by the given positive-int quantity (default 1).
If an item is provided, the data category and quantity are
extracted from the item, and the values passed for
data_category and quantity are ignored.
When recording a lost transaction via data_category="transaction",
the calling code should also record the lost spans via this method.
When recording lost spans, `quantity` should be set to the number
of contained spans, plus one for the transaction itself. When
passing an Item containing a transaction via the `item` parameter,
this method automatically records the lost spans.
"""
return None
def is_healthy(self):
# type: () -> bool
return True
def __del__(self):
# type: () -> None
try:
self.kill()
except Exception:
pass
def _parse_rate_limits(header, now=None):
# type: (Any, Optional[datetime]) -> Iterable[Tuple[Optional[EventDataCategory], datetime]]
if now is None:
now = datetime.now(timezone.utc)
for limit in header.split(","):
try:
parameters = limit.strip().split(":")
retry_after, categories = parameters[:2]
retry_after = now + timedelta(seconds=int(retry_after))
for category in categories and categories.split(";") or (None,):
if category == "metric_bucket":
try:
namespaces = parameters[4].split(";")
except IndexError:
namespaces = []
if not namespaces or "custom" in namespaces:
yield category, retry_after
else:
yield category, retry_after
except (LookupError, ValueError):
continue
class HttpTransport(Transport):
"""The default HTTP transport."""
def __init__(
self, options # type: Dict[str, Any]
):
# type: (...) -> None
from sentry_sdk.consts import VERSION
Transport.__init__(self, options)
assert self.parsed_dsn is not None
self.options = options # type: Dict[str, Any]
self._worker = BackgroundWorker(queue_size=options["transport_queue_size"])
self._auth = self.parsed_dsn.to_auth("sentry.python/%s" % VERSION)
self._disabled_until = {} # type: Dict[Optional[EventDataCategory], datetime]
self._retry = urllib3.util.Retry()
self._discarded_events = defaultdict(
int
) # type: DefaultDict[Tuple[EventDataCategory, str], int]
self._last_client_report_sent = time.time()
compresslevel = options.get("_experiments", {}).get(
"transport_zlib_compression_level"
)
self._compresslevel = 9 if compresslevel is None else int(compresslevel)
num_pools = options.get("_experiments", {}).get("transport_num_pools")
self._num_pools = 2 if num_pools is None else int(num_pools)
self._pool = self._make_pool(
self.parsed_dsn,
http_proxy=options["http_proxy"],
https_proxy=options["https_proxy"],
ca_certs=options["ca_certs"],
cert_file=options["cert_file"],
key_file=options["key_file"],
proxy_headers=options["proxy_headers"],
)
# Backwards compatibility for deprecated `self.hub_class` attribute
self._hub_cls = sentry_sdk.Hub
def record_lost_event(
self,
reason, # type: str
data_category=None, # type: Optional[EventDataCategory]
item=None, # type: Optional[Item]
*,
quantity=1, # type: int
):
# type: (...) -> None
if not self.options["send_client_reports"]:
return
if item is not None:
data_category = item.data_category
quantity = 1 # If an item is provided, we always count it as 1 (except for attachments, handled below).
if data_category == "transaction":
# Also record the lost spans
event = item.get_transaction_event() or {}
# +1 for the transaction itself
span_count = len(event.get("spans") or []) + 1
self.record_lost_event(reason, "span", quantity=span_count)
elif data_category == "attachment":
# quantity of 0 is actually 1 as we do not want to count
# empty attachments as actually empty.
quantity = len(item.get_bytes()) or 1
elif data_category is None:
raise TypeError("data category not provided")
self._discarded_events[data_category, reason] += quantity
def _update_rate_limits(self, response):
# type: (urllib3.BaseHTTPResponse) -> None
# new sentries with more rate limit insights. We honor this header
# no matter of the status code to update our internal rate limits.
header = response.headers.get("x-sentry-rate-limits")
if header:
logger.warning("Rate-limited via x-sentry-rate-limits")
self._disabled_until.update(_parse_rate_limits(header))
# old sentries only communicate global rate limit hits via the
# retry-after header on 429. This header can also be emitted on new
# sentries if a proxy in front wants to globally slow things down.
elif response.status == 429:
logger.warning("Rate-limited via 429")
self._disabled_until[None] = datetime.now(timezone.utc) + timedelta(
seconds=self._retry.get_retry_after(response) or 60
)
def _send_request(
self,
body, # type: bytes
headers, # type: Dict[str, str]
endpoint_type=EndpointType.ENVELOPE, # type: EndpointType
envelope=None, # type: Optional[Envelope]
):
# type: (...) -> None
def record_loss(reason):
# type: (str) -> None
if envelope is None:
self.record_lost_event(reason, data_category="error")
else:
for item in envelope.items:
self.record_lost_event(reason, item=item)
headers.update(
{
"User-Agent": str(self._auth.client),
"X-Sentry-Auth": str(self._auth.to_header()),
}
)
try:
response = self._pool.request(
"POST",
str(self._auth.get_api_url(endpoint_type)),
body=body,
headers=headers,
)
except Exception:
self.on_dropped_event("network")
record_loss("network_error")
raise
try:
self._update_rate_limits(response)
if response.status == 429:
# if we hit a 429. Something was rate limited but we already
# acted on this in `self._update_rate_limits`. Note that we
# do not want to record event loss here as we will have recorded
# an outcome in relay already.
self.on_dropped_event("status_429")
pass
elif response.status >= 300 or response.status < 200:
logger.error(
"Unexpected status code: %s (body: %s)",
response.status,
response.data,
)
self.on_dropped_event("status_{}".format(response.status))
record_loss("network_error")
finally:
response.close()
def on_dropped_event(self, reason):
# type: (str) -> None
return None
def _fetch_pending_client_report(self, force=False, interval=60):
# type: (bool, int) -> Optional[Item]
if not self.options["send_client_reports"]:
return None
if not (force or self._last_client_report_sent < time.time() - interval):
return None
discarded_events = self._discarded_events
self._discarded_events = defaultdict(int)
self._last_client_report_sent = time.time()
if not discarded_events:
return None
return Item(
PayloadRef(
json={
"timestamp": time.time(),
"discarded_events": [
{"reason": reason, "category": category, "quantity": quantity}
for (
(category, reason),
quantity,
) in discarded_events.items()
],
}
),
type="client_report",
)
def _flush_client_reports(self, force=False):
# type: (bool) -> None
client_report = self._fetch_pending_client_report(force=force, interval=60)
if client_report is not None:
self.capture_envelope(Envelope(items=[client_report]))
def _check_disabled(self, category):
# type: (str) -> bool
def _disabled(bucket):
# type: (Any) -> bool
# The envelope item type used for metrics is statsd
# whereas the rate limit category is metric_bucket
if bucket == "statsd":
bucket = "metric_bucket"
ts = self._disabled_until.get(bucket)
return ts is not None and ts > datetime.now(timezone.utc)
return _disabled(category) or _disabled(None)
def _is_rate_limited(self):
# type: () -> bool
return any(
ts > datetime.now(timezone.utc) for ts in self._disabled_until.values()
)
def _is_worker_full(self):
# type: () -> bool
return self._worker.full()
def is_healthy(self):
# type: () -> bool
return not (self._is_worker_full() or self._is_rate_limited())
def _send_envelope(
self, envelope # type: Envelope
):
# type: (...) -> None
# remove all items from the envelope which are over quota
new_items = []
for item in envelope.items:
if self._check_disabled(item.data_category):
if item.data_category in ("transaction", "error", "default", "statsd"):
self.on_dropped_event("self_rate_limits")
self.record_lost_event("ratelimit_backoff", item=item)
else:
new_items.append(item)
# Since we're modifying the envelope here make a copy so that others
# that hold references do not see their envelope modified.
envelope = Envelope(headers=envelope.headers, items=new_items)
if not envelope.items:
return None
# since we're already in the business of sending out an envelope here
# check if we have one pending for the stats session envelopes so we
# can attach it to this enveloped scheduled for sending. This will
# currently typically attach the client report to the most recent
# session update.
client_report_item = self._fetch_pending_client_report(interval=30)
if client_report_item is not None:
envelope.items.append(client_report_item)
body = io.BytesIO()
if self._compresslevel == 0:
envelope.serialize_into(body)
else:
with gzip.GzipFile(
fileobj=body, mode="w", compresslevel=self._compresslevel
) as f:
envelope.serialize_into(f)
assert self.parsed_dsn is not None
logger.debug(
"Sending envelope [%s] project:%s host:%s",
envelope.description,
self.parsed_dsn.project_id,
self.parsed_dsn.host,
)
headers = {
"Content-Type": "application/x-sentry-envelope",
}
if self._compresslevel > 0:
headers["Content-Encoding"] = "gzip"
self._send_request(
body.getvalue(),
headers=headers,
endpoint_type=EndpointType.ENVELOPE,
envelope=envelope,
)
return None
def _get_pool_options(self, ca_certs, cert_file=None, key_file=None):
# type: (Optional[Any], Optional[Any], Optional[Any]) -> Dict[str, Any]
options = {
"num_pools": self._num_pools,
"cert_reqs": "CERT_REQUIRED",
}
socket_options = None # type: Optional[List[Tuple[int, int, int | bytes]]]
if self.options["socket_options"] is not None:
socket_options = self.options["socket_options"]
if self.options["keep_alive"]:
if socket_options is None:
socket_options = []
used_options = {(o[0], o[1]) for o in socket_options}
for default_option in KEEP_ALIVE_SOCKET_OPTIONS:
if (default_option[0], default_option[1]) not in used_options:
socket_options.append(default_option)
if socket_options is not None:
options["socket_options"] = socket_options
options["ca_certs"] = (
ca_certs # User-provided bundle from the SDK init
or os.environ.get("SSL_CERT_FILE")
or os.environ.get("REQUESTS_CA_BUNDLE")
or certifi.where()
)
options["cert_file"] = cert_file or os.environ.get("CLIENT_CERT_FILE")
options["key_file"] = key_file or os.environ.get("CLIENT_KEY_FILE")
return options
def _in_no_proxy(self, parsed_dsn):
# type: (Dsn) -> bool
no_proxy = getproxies().get("no")
if not no_proxy:
return False
for host in no_proxy.split(","):
host = host.strip()
if parsed_dsn.host.endswith(host) or parsed_dsn.netloc.endswith(host):
return True
return False
def _make_pool(
self,
parsed_dsn, # type: Dsn
http_proxy, # type: Optional[str]
https_proxy, # type: Optional[str]
ca_certs, # type: Optional[Any]
cert_file, # type: Optional[Any]
key_file, # type: Optional[Any]
proxy_headers, # type: Optional[Dict[str, str]]
):
# type: (...) -> Union[PoolManager, ProxyManager]
proxy = None
no_proxy = self._in_no_proxy(parsed_dsn)
# try HTTPS first
if parsed_dsn.scheme == "https" and (https_proxy != ""):
proxy = https_proxy or (not no_proxy and getproxies().get("https"))
# maybe fallback to HTTP proxy
if not proxy and (http_proxy != ""):
proxy = http_proxy or (not no_proxy and getproxies().get("http"))
opts = self._get_pool_options(ca_certs, cert_file, key_file)
if proxy:
if proxy_headers:
opts["proxy_headers"] = proxy_headers
if proxy.startswith("socks"):
use_socks_proxy = True
try:
# Check if PySocks depencency is available
from urllib3.contrib.socks import SOCKSProxyManager
except ImportError:
use_socks_proxy = False
logger.warning(
"You have configured a SOCKS proxy (%s) but support for SOCKS proxies is not installed. Disabling proxy support. Please add `PySocks` (or `urllib3` with the `[socks]` extra) to your dependencies.",
proxy,
)
if use_socks_proxy:
return SOCKSProxyManager(proxy, **opts)
else:
return urllib3.PoolManager(**opts)
else:
return urllib3.ProxyManager(proxy, **opts)
else:
return urllib3.PoolManager(**opts)
def capture_envelope(
self, envelope # type: Envelope
):
# type: (...) -> None
def send_envelope_wrapper():
# type: () -> None
with capture_internal_exceptions():
self._send_envelope(envelope)
self._flush_client_reports()
if not self._worker.submit(send_envelope_wrapper):
self.on_dropped_event("full_queue")
for item in envelope.items:
self.record_lost_event("queue_overflow", item=item)
def flush(
self,
timeout, # type: float
callback=None, # type: Optional[Any]
):
# type: (...) -> None
logger.debug("Flushing HTTP transport")
if timeout > 0:
self._worker.submit(lambda: self._flush_client_reports(force=True))
self._worker.flush(timeout, callback)
def kill(self):
# type: () -> None
logger.debug("Killing HTTP transport")
self._worker.kill()
@staticmethod
def _warn_hub_cls():
# type: () -> None
"""Convenience method to warn users about the deprecation of the `hub_cls` attribute."""
warnings.warn(
"The `hub_cls` attribute is deprecated and will be removed in a future release.",
DeprecationWarning,
stacklevel=3,
)
@property
def hub_cls(self):
# type: () -> type[sentry_sdk.Hub]
"""DEPRECATED: This attribute is deprecated and will be removed in a future release."""
HttpTransport._warn_hub_cls()
return self._hub_cls
@hub_cls.setter
def hub_cls(self, value):
# type: (type[sentry_sdk.Hub]) -> None
"""DEPRECATED: This attribute is deprecated and will be removed in a future release."""
HttpTransport._warn_hub_cls()
self._hub_cls = value
class _FunctionTransport(Transport):
"""
DEPRECATED: Users wishing to provide a custom transport should subclass
the Transport class, rather than providing a function.
"""
def __init__(
self, func # type: Callable[[Event], None]
):
# type: (...) -> None
Transport.__init__(self)
self._func = func
def capture_event(
self, event # type: Event
):
# type: (...) -> None
self._func(event)
return None
def capture_envelope(self, envelope: Envelope) -> None:
# Since function transports expect to be called with an event, we need
# to iterate over the envelope and call the function for each event, via
# the deprecated capture_event method.
event = envelope.get_event()
if event is not None:
self.capture_event(event)
def make_transport(options):
# type: (Dict[str, Any]) -> Optional[Transport]
ref_transport = options["transport"]
# By default, we use the http transport class
transport_cls = HttpTransport # type: Type[Transport]
if isinstance(ref_transport, Transport):
return ref_transport
elif isinstance(ref_transport, type) and issubclass(ref_transport, Transport):
transport_cls = ref_transport
elif callable(ref_transport):
warnings.warn(
"Function transports are deprecated and will be removed in a future release."
"Please provide a Transport instance or subclass, instead.",
DeprecationWarning,
stacklevel=2,
)
return _FunctionTransport(ref_transport)
# if a transport class is given only instantiate it if the dsn is not
# empty or None
if options["dsn"]:
return transport_cls(options)
return None
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