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hub.py
import copy import sys from datetime import datetime from contextlib import contextmanager from sentry_sdk._compat import with_metaclass from sentry_sdk.consts import INSTRUMENTER from sentry_sdk.scope import Scope from sentry_sdk.client import Client from sentry_sdk.profiler import Profile from sentry_sdk.tracing import ( NoOpSpan, Span, Transaction, BAGGAGE_HEADER_NAME, SENTRY_TRACE_HEADER_NAME, ) from sentry_sdk.session import Session from sentry_sdk.tracing_utils import ( has_tracing_enabled, normalize_incoming_data, ) from sentry_sdk.utils import ( exc_info_from_error, event_from_exception, logger, ContextVar, ) from sentry_sdk._types import TYPE_CHECKING if TYPE_CHECKING: from typing import Union from typing import Any from typing import Optional from typing import Tuple from typing import Dict from typing import List from typing import Callable from typing import Generator from typing import Type from typing import TypeVar from typing import overload from typing import ContextManager from sentry_sdk.integrations import Integration from sentry_sdk._types import ( Event, Hint, Breadcrumb, BreadcrumbHint, ExcInfo, ) from sentry_sdk.consts import ClientConstructor T = TypeVar("T") else: def overload(x): # type: (T) -> T return x _local = ContextVar("sentry_current_hub") def _update_scope(base, scope_change, scope_kwargs): # type: (Scope, Optional[Any], Dict[str, Any]) -> Scope if scope_change and scope_kwargs: raise TypeError("cannot provide scope and kwargs") if scope_change is not None: final_scope = copy.copy(base) if callable(scope_change): scope_change(final_scope) else: final_scope.update_from_scope(scope_change) elif scope_kwargs: final_scope = copy.copy(base) final_scope.update_from_kwargs(**scope_kwargs) else: final_scope = base return final_scope def _should_send_default_pii(): # type: () -> bool client = Hub.current.client if not client: return False return client.options["send_default_pii"] class _InitGuard(object): def __init__(self, client): # type: (Client) -> None self._client = client def __enter__(self): # type: () -> _InitGuard return self def __exit__(self, exc_type, exc_value, tb): # type: (Any, Any, Any) -> None c = self._client if c is not None: c.close() def _check_python_deprecations(): # type: () -> None version = sys.version_info[:2] if version == (3, 4) or version == (3, 5): logger.warning( "sentry-sdk 2.0.0 will drop support for Python %s.", "{}.{}".format(*version), ) logger.warning( "Please upgrade to the latest version to continue receiving upgrades and bugfixes." ) def _init(*args, **kwargs): # type: (*Optional[str], **Any) -> ContextManager[Any] """Initializes the SDK and optionally integrations. This takes the same arguments as the client constructor. """ client = Client(*args, **kwargs) # type: ignore Hub.current.bind_client(client) _check_python_deprecations() rv = _InitGuard(client) return rv from sentry_sdk._types import TYPE_CHECKING if TYPE_CHECKING: # Make mypy, PyCharm and other static analyzers think `init` is a type to # have nicer autocompletion for params. # # Use `ClientConstructor` to define the argument types of `init` and # `ContextManager[Any]` to tell static analyzers about the return type. class init(ClientConstructor, _InitGuard): # noqa: N801 pass else: # Alias `init` for actual usage. Go through the lambda indirection to throw # PyCharm off of the weakly typed signature (it would otherwise discover # both the weakly typed signature of `_init` and our faked `init` type). init = (lambda: _init)() class HubMeta(type): @property def current(cls): # type: () -> Hub """Returns the current instance of the hub.""" rv = _local.get(None) if rv is None: rv = Hub(GLOBAL_HUB) _local.set(rv) return rv @property def main(cls): # type: () -> Hub """Returns the main instance of the hub.""" return GLOBAL_HUB class _ScopeManager(object): def __init__(self, hub): # type: (Hub) -> None self._hub = hub self._original_len = len(hub._stack) self._layer = hub._stack[-1] def __enter__(self): # type: () -> Scope scope = self._layer[1] assert scope is not None return scope def __exit__(self, exc_type, exc_value, tb): # type: (Any, Any, Any) -> None current_len = len(self._hub._stack) if current_len < self._original_len: logger.error( "Scope popped too soon. Popped %s scopes too many.", self._original_len - current_len, ) return elif current_len > self._original_len: logger.warning( "Leaked %s scopes: %s", current_len - self._original_len, self._hub._stack[self._original_len :], ) layer = self._hub._stack[self._original_len - 1] del self._hub._stack[self._original_len - 1 :] if layer[1] != self._layer[1]: logger.error( "Wrong scope found. Meant to pop %s, but popped %s.", layer[1], self._layer[1], ) elif layer[0] != self._layer[0]: warning = ( "init() called inside of pushed scope. This might be entirely " "legitimate but usually occurs when initializing the SDK inside " "a request handler or task/job function. Try to initialize the " "SDK as early as possible instead." ) logger.warning(warning) class Hub(with_metaclass(HubMeta)): # type: ignore """The hub wraps the concurrency management of the SDK. Each thread has its own hub but the hub might transfer with the flow of execution if context vars are available. If the hub is used with a with statement it's temporarily activated. """ _stack = None # type: List[Tuple[Optional[Client], Scope]] # Mypy doesn't pick up on the metaclass. if TYPE_CHECKING: current = None # type: Hub main = None # type: Hub def __init__( self, client_or_hub=None, # type: Optional[Union[Hub, Client]] scope=None, # type: Optional[Any] ): # type: (...) -> None if isinstance(client_or_hub, Hub): hub = client_or_hub client, other_scope = hub._stack[-1] if scope is None: scope = copy.copy(other_scope) else: client = client_or_hub if scope is None: scope = Scope() self._stack = [(client, scope)] self._last_event_id = None # type: Optional[str] self._old_hubs = [] # type: List[Hub] def __enter__(self): # type: () -> Hub self._old_hubs.append(Hub.current) _local.set(self) return self def __exit__( self, exc_type, # type: Optional[type] exc_value, # type: Optional[BaseException] tb, # type: Optional[Any] ): # type: (...) -> None old = self._old_hubs.pop() _local.set(old) def run( self, callback # type: Callable[[], T] ): # type: (...) -> T """Runs a callback in the context of the hub. Alternatively the with statement can be used on the hub directly. """ with self: return callback() def get_integration( self, name_or_class # type: Union[str, Type[Integration]] ): # type: (...) -> Any """Returns the integration for this hub by name or class. If there is no client bound or the client does not have that integration then `None` is returned. If the return value is not `None` the hub is guaranteed to have a client attached. """ if isinstance(name_or_class, str): integration_name = name_or_class elif name_or_class.identifier is not None: integration_name = name_or_class.identifier else: raise ValueError("Integration has no name") client = self.client if client is not None: rv = client.integrations.get(integration_name) if rv is not None: return rv @property def client(self): # type: () -> Optional[Client] """Returns the current client on the hub.""" return self._stack[-1][0] @property def scope(self): # type: () -> Scope """Returns the current scope on the hub.""" return self._stack[-1][1] def last_event_id(self): # type: () -> Optional[str] """Returns the last event ID.""" return self._last_event_id def bind_client( self, new # type: Optional[Client] ): # type: (...) -> None """Binds a new client to the hub.""" top = self._stack[-1] self._stack[-1] = (new, top[1]) def capture_event(self, event, hint=None, scope=None, **scope_args): # type: (Event, Optional[Hint], Optional[Scope], Any) -> Optional[str] """ Captures an event. Alias of :py:meth:`sentry_sdk.Client.capture_event`. :param scope_args: For supported `**scope_args` see :py:meth:`sentry_sdk.Scope.update_from_kwargs`. """ client, top_scope = self._stack[-1] scope = _update_scope(top_scope, scope, scope_args) if client is not None: is_transaction = event.get("type") == "transaction" rv = client.capture_event(event, hint, scope) if rv is not None and not is_transaction: self._last_event_id = rv return rv return None def capture_message(self, message, level=None, scope=None, **scope_args): # type: (str, Optional[str], Optional[Scope], Any) -> Optional[str] """ Captures a message. :param message: The string to send as the message. :param level: If no level is provided, the default level is `info`. :param scope: An optional :py:class:`sentry_sdk.Scope` to use. :param scope_args: For supported `**scope_args` see :py:meth:`sentry_sdk.Scope.update_from_kwargs`. :returns: An `event_id` if the SDK decided to send the event (see :py:meth:`sentry_sdk.Client.capture_event`). """ if self.client is None: return None if level is None: level = "info" return self.capture_event( {"message": message, "level": level}, scope=scope, **scope_args ) def capture_exception(self, error=None, scope=None, **scope_args): # type: (Optional[Union[BaseException, ExcInfo]], Optional[Scope], Any) -> Optional[str] """Captures an exception. :param error: An exception to catch. If `None`, `sys.exc_info()` will be used. :param scope_args: For supported `**scope_args` see :py:meth:`sentry_sdk.Scope.update_from_kwargs`. :returns: An `event_id` if the SDK decided to send the event (see :py:meth:`sentry_sdk.Client.capture_event`). """ client = self.client if client is None: return None if error is not None: exc_info = exc_info_from_error(error) else: exc_info = sys.exc_info() event, hint = event_from_exception(exc_info, client_options=client.options) try: return self.capture_event(event, hint=hint, scope=scope, **scope_args) except Exception: self._capture_internal_exception(sys.exc_info()) return None def _capture_internal_exception( self, exc_info # type: Any ): # type: (...) -> Any """ Capture an exception that is likely caused by a bug in the SDK itself. These exceptions do not end up in Sentry and are just logged instead. """ logger.error("Internal error in sentry_sdk", exc_info=exc_info) def add_breadcrumb(self, crumb=None, hint=None, **kwargs): # type: (Optional[Breadcrumb], Optional[BreadcrumbHint], Any) -> None """ Adds a breadcrumb. :param crumb: Dictionary with the data as the sentry v7/v8 protocol expects. :param hint: An optional value that can be used by `before_breadcrumb` to customize the breadcrumbs that are emitted. """ client, scope = self._stack[-1] if client is None: logger.info("Dropped breadcrumb because no client bound") return crumb = dict(crumb or ()) # type: Breadcrumb crumb.update(kwargs) if not crumb: return hint = dict(hint or ()) # type: Hint if crumb.get("timestamp") is None: crumb["timestamp"] = datetime.utcnow() if crumb.get("type") is None: crumb["type"] = "default" if client.options["before_breadcrumb"] is not None: new_crumb = client.options["before_breadcrumb"](crumb, hint) else: new_crumb = crumb if new_crumb is not None: scope._breadcrumbs.append(new_crumb) else: logger.info("before breadcrumb dropped breadcrumb (%s)", crumb) max_breadcrumbs = client.options["max_breadcrumbs"] # type: int while len(scope._breadcrumbs) > max_breadcrumbs: scope._breadcrumbs.popleft() def start_span(self, span=None, instrumenter=INSTRUMENTER.SENTRY, **kwargs): # type: (Optional[Span], str, Any) -> Span """ Start a span whose parent is the currently active span or transaction, if any. The return value is a :py:class:`sentry_sdk.tracing.Span` instance, typically used as a context manager to start and stop timing in a `with` block. Only spans contained in a transaction are sent to Sentry. Most integrations start a transaction at the appropriate time, for example for every incoming HTTP request. Use :py:meth:`sentry_sdk.start_transaction` to start a new transaction when one is not already in progress. For supported `**kwargs` see :py:class:`sentry_sdk.tracing.Span`. """ configuration_instrumenter = self.client and self.client.options["instrumenter"] if instrumenter != configuration_instrumenter: return NoOpSpan() # TODO: consider removing this in a future release. # This is for backwards compatibility with releases before # start_transaction existed, to allow for a smoother transition. if isinstance(span, Transaction) or "transaction" in kwargs: deprecation_msg = ( "Deprecated: use start_transaction to start transactions and " "Transaction.start_child to start spans." ) if isinstance(span, Transaction): logger.warning(deprecation_msg) return self.start_transaction(span) if "transaction" in kwargs: logger.warning(deprecation_msg) name = kwargs.pop("transaction") return self.start_transaction(name=name, **kwargs) if span is not None: return span kwargs.setdefault("hub", self) span = self.scope.span if span is not None: return span.start_child(**kwargs) # If there is already a trace_id in the propagation context, use it. if "trace_id" not in kwargs: traceparent = self.get_traceparent() trace_id = traceparent.split("-")[0] if traceparent else None if trace_id is not None: kwargs["trace_id"] = trace_id return Span(**kwargs) def start_transaction( self, transaction=None, instrumenter=INSTRUMENTER.SENTRY, **kwargs ): # type: (Optional[Transaction], str, Any) -> Union[Transaction, NoOpSpan] """ Start and return a transaction. Start an existing transaction if given, otherwise create and start a new transaction with kwargs. This is the entry point to manual tracing instrumentation. A tree structure can be built by adding child spans to the transaction, and child spans to other spans. To start a new child span within the transaction or any span, call the respective `.start_child()` method. Every child span must be finished before the transaction is finished, otherwise the unfinished spans are discarded. When used as context managers, spans and transactions are automatically finished at the end of the `with` block. If not using context managers, call the `.finish()` method. When the transaction is finished, it will be sent to Sentry with all its finished child spans. For supported `**kwargs` see :py:class:`sentry_sdk.tracing.Transaction`. """ configuration_instrumenter = self.client and self.client.options["instrumenter"] if instrumenter != configuration_instrumenter: return NoOpSpan() custom_sampling_context = kwargs.pop("custom_sampling_context", {}) # if we haven't been given a transaction, make one if transaction is None: kwargs.setdefault("hub", self) transaction = Transaction(**kwargs) # use traces_sample_rate, traces_sampler, and/or inheritance to make a # sampling decision sampling_context = { "transaction_context": transaction.to_json(), "parent_sampled": transaction.parent_sampled, } sampling_context.update(custom_sampling_context) transaction._set_initial_sampling_decision(sampling_context=sampling_context) profile = Profile(transaction, hub=self) profile._set_initial_sampling_decision(sampling_context=sampling_context) # we don't bother to keep spans if we already know we're not going to # send the transaction if transaction.sampled: max_spans = ( self.client and self.client.options["_experiments"].get("max_spans") ) or 1000 transaction.init_span_recorder(maxlen=max_spans) return transaction def continue_trace(self, environ_or_headers, op=None, name=None, source=None): # type: (Dict[str, Any], Optional[str], Optional[str], Optional[str]) -> Transaction """ Sets the propagation context from environment or headers and returns a transaction. """ with self.configure_scope() as scope: scope.generate_propagation_context(environ_or_headers) transaction = Transaction.continue_from_headers( normalize_incoming_data(environ_or_headers), op=op, name=name, source=source, ) return transaction @overload def push_scope( self, callback=None # type: Optional[None] ): # type: (...) -> ContextManager[Scope] pass @overload def push_scope( # noqa: F811 self, callback # type: Callable[[Scope], None] ): # type: (...) -> None pass def push_scope( # noqa self, callback=None, # type: Optional[Callable[[Scope], None]] continue_trace=True, # type: bool ): # type: (...) -> Optional[ContextManager[Scope]] """ Pushes a new layer on the scope stack. :param callback: If provided, this method pushes a scope, calls `callback`, and pops the scope again. :returns: If no `callback` is provided, a context manager that should be used to pop the scope again. """ if callback is not None: with self.push_scope() as scope: callback(scope) return None client, scope = self._stack[-1] new_scope = copy.copy(scope) if continue_trace: new_scope.generate_propagation_context() new_layer = (client, new_scope) self._stack.append(new_layer) return _ScopeManager(self) def pop_scope_unsafe(self): # type: () -> Tuple[Optional[Client], Scope] """ Pops a scope layer from the stack. Try to use the context manager :py:meth:`push_scope` instead. """ rv = self._stack.pop() assert self._stack, "stack must have at least one layer" return rv @overload def configure_scope( self, callback=None # type: Optional[None] ): # type: (...) -> ContextManager[Scope] pass @overload def configure_scope( # noqa: F811 self, callback # type: Callable[[Scope], None] ): # type: (...) -> None pass def configure_scope( # noqa self, callback=None, # type: Optional[Callable[[Scope], None]] continue_trace=True, # type: bool ): # type: (...) -> Optional[ContextManager[Scope]] """ Reconfigures the scope. :param callback: If provided, call the callback with the current scope. :returns: If no callback is provided, returns a context manager that returns the scope. """ client, scope = self._stack[-1] if continue_trace: scope.generate_propagation_context() if callback is not None: if client is not None: callback(scope) return None @contextmanager def inner(): # type: () -> Generator[Scope, None, None] if client is not None: yield scope else: yield Scope() return inner() def start_session( self, session_mode="application" # type: str ): # type: (...) -> None """Starts a new session.""" self.end_session() client, scope = self._stack[-1] scope._session = Session( release=client.options["release"] if client else None, environment=client.options["environment"] if client else None, user=scope._user, session_mode=session_mode, ) def end_session(self): # type: (...) -> None """Ends the current session if there is one.""" client, scope = self._stack[-1] session = scope._session self.scope._session = None if session is not None: session.close() if client is not None: client.capture_session(session) def stop_auto_session_tracking(self): # type: (...) -> None """Stops automatic session tracking. This temporarily session tracking for the current scope when called. To resume session tracking call `resume_auto_session_tracking`. """ self.end_session() client, scope = self._stack[-1] scope._force_auto_session_tracking = False def resume_auto_session_tracking(self): # type: (...) -> None """Resumes automatic session tracking for the current scope if disabled earlier. This requires that generally automatic session tracking is enabled. """ client, scope = self._stack[-1] scope._force_auto_session_tracking = None def flush( self, timeout=None, # type: Optional[float] callback=None, # type: Optional[Callable[[int, float], None]] ): # type: (...) -> None """ Alias for :py:meth:`sentry_sdk.Client.flush` """ client, scope = self._stack[-1] if client is not None: return client.flush(timeout=timeout, callback=callback) def get_traceparent(self): # type: () -> Optional[str] """ Returns the traceparent either from the active span or from the scope. """ if self.client is not None: if has_tracing_enabled(self.client.options) and self.scope.span is not None: return self.scope.span.to_traceparent() return self.scope.get_traceparent() def get_baggage(self): # type: () -> Optional[str] """ Returns Baggage either from the active span or from the scope. """ if ( self.client is not None and has_tracing_enabled(self.client.options) and self.scope.span is not None ): baggage = self.scope.span.to_baggage() else: baggage = self.scope.get_baggage() if baggage is not None: return baggage.serialize() return None def iter_trace_propagation_headers(self, span=None): # type: (Optional[Span]) -> Generator[Tuple[str, str], None, None] """ Return HTTP headers which allow propagation of trace data. Data taken from the span representing the request, if available, or the current span on the scope if not. """ client = self._stack[-1][0] propagate_traces = client and client.options["propagate_traces"] if not propagate_traces: return span = span or self.scope.span if client and has_tracing_enabled(client.options) and span is not None: for header in span.iter_headers(): yield header else: for header in self.scope.iter_headers(): yield header def trace_propagation_meta(self, span=None): # type: (Optional[Span]) -> str """ Return meta tags which should be injected into HTML templates to allow propagation of trace information. """ if span is not None: logger.warning( "The parameter `span` in trace_propagation_meta() is deprecated and will be removed in the future." ) meta = "" sentry_trace = self.get_traceparent() if sentry_trace is not None: meta += '<meta name="%s" content="%s">' % ( SENTRY_TRACE_HEADER_NAME, sentry_trace, ) baggage = self.get_baggage() if baggage is not None: meta += '<meta name="%s" content="%s">' % ( BAGGAGE_HEADER_NAME, baggage, ) return meta GLOBAL_HUB = Hub() _local.set(GLOBAL_HUB)
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