structure saas with tools
This commit is contained in:
Davidson Gomes
@@ -0,0 +1,646 @@
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# Copyright The OpenTelemetry Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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The OpenTelemetry tracing API describes the classes used to generate
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distributed traces.
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The :class:`.Tracer` class controls access to the execution context, and
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manages span creation. Each operation in a trace is represented by a
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:class:`.Span`, which records the start, end time, and metadata associated with
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the operation.
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This module provides abstract (i.e. unimplemented) classes required for
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tracing, and a concrete no-op :class:`.NonRecordingSpan` that allows applications
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to use the API package alone without a supporting implementation.
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To get a tracer, you need to provide the package name from which you are
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calling the tracer APIs to OpenTelemetry by calling `TracerProvider.get_tracer`
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with the calling module name and the version of your package.
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The tracer supports creating spans that are "attached" or "detached" from the
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context. New spans are "attached" to the context in that they are
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created as children of the currently active span, and the newly-created span
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can optionally become the new active span::
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from opentelemetry import trace
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tracer = trace.get_tracer(__name__)
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# Create a new root span, set it as the current span in context
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with tracer.start_as_current_span("parent"):
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# Attach a new child and update the current span
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with tracer.start_as_current_span("child"):
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do_work():
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# Close child span, set parent as current
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# Close parent span, set default span as current
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When creating a span that's "detached" from the context the active span doesn't
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change, and the caller is responsible for managing the span's lifetime::
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# Explicit parent span assignment is done via the Context
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from opentelemetry.trace import set_span_in_context
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context = set_span_in_context(parent)
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child = tracer.start_span("child", context=context)
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try:
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do_work(span=child)
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finally:
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child.end()
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Applications should generally use a single global TracerProvider, and use
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either implicit or explicit context propagation consistently throughout.
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.. versionadded:: 0.1.0
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.. versionchanged:: 0.3.0
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`TracerProvider` was introduced and the global ``tracer`` getter was
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replaced by ``tracer_provider``.
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.. versionchanged:: 0.5.0
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``tracer_provider`` was replaced by `get_tracer_provider`,
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``set_preferred_tracer_provider_implementation`` was replaced by
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`set_tracer_provider`.
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"""
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import os
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import typing
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from abc import ABC, abstractmethod
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from enum import Enum
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from logging import getLogger
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from typing import Iterator, Optional, Sequence, cast
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from deprecated import deprecated
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from opentelemetry import context as context_api
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from opentelemetry.attributes import BoundedAttributes
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from opentelemetry.context.context import Context
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from opentelemetry.environment_variables import OTEL_PYTHON_TRACER_PROVIDER
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from opentelemetry.trace.propagation import (
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_SPAN_KEY,
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get_current_span,
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set_span_in_context,
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)
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from opentelemetry.trace.span import (
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DEFAULT_TRACE_OPTIONS,
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DEFAULT_TRACE_STATE,
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INVALID_SPAN,
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INVALID_SPAN_CONTEXT,
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INVALID_SPAN_ID,
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INVALID_TRACE_ID,
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NonRecordingSpan,
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Span,
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SpanContext,
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TraceFlags,
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TraceState,
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format_span_id,
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format_trace_id,
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)
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from opentelemetry.trace.status import Status, StatusCode
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from opentelemetry.util import types
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from opentelemetry.util._decorator import _agnosticcontextmanager
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from opentelemetry.util._once import Once
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from opentelemetry.util._providers import _load_provider
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logger = getLogger(__name__)
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class _LinkBase(ABC):
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def __init__(self, context: "SpanContext") -> None:
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self._context = context
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@property
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def context(self) -> "SpanContext":
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return self._context
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@property
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@abstractmethod
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def attributes(self) -> types.Attributes:
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pass
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class Link(_LinkBase):
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"""A link to a `Span`. The attributes of a Link are immutable.
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Args:
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context: `SpanContext` of the `Span` to link to.
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attributes: Link's attributes.
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"""
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def __init__(
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self,
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context: "SpanContext",
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attributes: types.Attributes = None,
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) -> None:
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super().__init__(context)
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self._attributes = attributes
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@property
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def attributes(self) -> types.Attributes:
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return self._attributes
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@property
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def dropped_attributes(self) -> int:
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if isinstance(self._attributes, BoundedAttributes):
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return self._attributes.dropped
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return 0
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_Links = Optional[Sequence[Link]]
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class SpanKind(Enum):
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"""Specifies additional details on how this span relates to its parent span.
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Note that this enumeration is experimental and likely to change. See
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https://github.com/open-telemetry/opentelemetry-specification/pull/226.
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"""
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#: Default value. Indicates that the span is used internally in the
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# application.
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INTERNAL = 0
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#: Indicates that the span describes an operation that handles a remote
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# request.
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SERVER = 1
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#: Indicates that the span describes a request to some remote service.
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CLIENT = 2
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#: Indicates that the span describes a producer sending a message to a
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#: broker. Unlike client and server, there is usually no direct critical
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#: path latency relationship between producer and consumer spans.
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PRODUCER = 3
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#: Indicates that the span describes a consumer receiving a message from a
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#: broker. Unlike client and server, there is usually no direct critical
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#: path latency relationship between producer and consumer spans.
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CONSUMER = 4
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class TracerProvider(ABC):
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@abstractmethod
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def get_tracer(
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self,
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instrumenting_module_name: str,
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instrumenting_library_version: typing.Optional[str] = None,
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schema_url: typing.Optional[str] = None,
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attributes: typing.Optional[types.Attributes] = None,
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) -> "Tracer":
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"""Returns a `Tracer` for use by the given instrumentation library.
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For any two calls it is undefined whether the same or different
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`Tracer` instances are returned, even for different library names.
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This function may return different `Tracer` types (e.g. a no-op tracer
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vs. a functional tracer).
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Args:
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instrumenting_module_name: The uniquely identifiable name for instrumentation
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scope, such as instrumentation library, package, module or class name.
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``__name__`` may not be used as this can result in
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different tracer names if the tracers are in different files.
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It is better to use a fixed string that can be imported where
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needed and used consistently as the name of the tracer.
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This should *not* be the name of the module that is
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instrumented but the name of the module doing the instrumentation.
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E.g., instead of ``"requests"``, use
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``"opentelemetry.instrumentation.requests"``.
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instrumenting_library_version: Optional. The version string of the
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instrumenting library. Usually this should be the same as
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``importlib.metadata.version(instrumenting_library_name)``.
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schema_url: Optional. Specifies the Schema URL of the emitted telemetry.
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attributes: Optional. Specifies the attributes of the emitted telemetry.
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"""
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class NoOpTracerProvider(TracerProvider):
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"""The default TracerProvider, used when no implementation is available.
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All operations are no-op.
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"""
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def get_tracer(
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self,
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instrumenting_module_name: str,
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instrumenting_library_version: typing.Optional[str] = None,
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schema_url: typing.Optional[str] = None,
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attributes: typing.Optional[types.Attributes] = None,
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) -> "Tracer":
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# pylint:disable=no-self-use,unused-argument
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return NoOpTracer()
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@deprecated(version="1.9.0", reason="You should use NoOpTracerProvider") # type: ignore
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class _DefaultTracerProvider(NoOpTracerProvider):
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"""The default TracerProvider, used when no implementation is available.
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All operations are no-op.
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"""
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class ProxyTracerProvider(TracerProvider):
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def get_tracer(
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self,
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instrumenting_module_name: str,
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instrumenting_library_version: typing.Optional[str] = None,
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schema_url: typing.Optional[str] = None,
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attributes: typing.Optional[types.Attributes] = None,
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) -> "Tracer":
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if _TRACER_PROVIDER:
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return _TRACER_PROVIDER.get_tracer(
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instrumenting_module_name,
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instrumenting_library_version,
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schema_url,
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attributes,
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)
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return ProxyTracer(
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instrumenting_module_name,
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instrumenting_library_version,
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schema_url,
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attributes,
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)
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class Tracer(ABC):
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"""Handles span creation and in-process context propagation.
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This class provides methods for manipulating the context, creating spans,
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and controlling spans' lifecycles.
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"""
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@abstractmethod
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def start_span(
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self,
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name: str,
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context: Optional[Context] = None,
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kind: SpanKind = SpanKind.INTERNAL,
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attributes: types.Attributes = None,
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links: _Links = None,
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start_time: Optional[int] = None,
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record_exception: bool = True,
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set_status_on_exception: bool = True,
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) -> "Span":
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"""Starts a span.
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Create a new span. Start the span without setting it as the current
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span in the context. To start the span and use the context in a single
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method, see :meth:`start_as_current_span`.
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By default the current span in the context will be used as parent, but an
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explicit context can also be specified, by passing in a `Context` containing
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a current `Span`. If there is no current span in the global `Context` or in
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the specified context, the created span will be a root span.
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The span can be used as a context manager. On exiting the context manager,
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the span's end() method will be called.
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Example::
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# trace.get_current_span() will be used as the implicit parent.
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# If none is found, the created span will be a root instance.
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with tracer.start_span("one") as child:
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child.add_event("child's event")
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Args:
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name: The name of the span to be created.
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context: An optional Context containing the span's parent. Defaults to the
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global context.
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kind: The span's kind (relationship to parent). Note that is
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meaningful even if there is no parent.
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attributes: The span's attributes.
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links: Links span to other spans
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start_time: Sets the start time of a span
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record_exception: Whether to record any exceptions raised within the
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context as error event on the span.
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set_status_on_exception: Only relevant if the returned span is used
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in a with/context manager. Defines whether the span status will
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be automatically set to ERROR when an uncaught exception is
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raised in the span with block. The span status won't be set by
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this mechanism if it was previously set manually.
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Returns:
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The newly-created span.
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"""
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@_agnosticcontextmanager
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@abstractmethod
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def start_as_current_span(
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self,
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name: str,
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context: Optional[Context] = None,
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kind: SpanKind = SpanKind.INTERNAL,
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attributes: types.Attributes = None,
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links: _Links = None,
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start_time: Optional[int] = None,
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record_exception: bool = True,
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set_status_on_exception: bool = True,
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end_on_exit: bool = True,
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) -> Iterator["Span"]:
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"""Context manager for creating a new span and set it
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as the current span in this tracer's context.
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Exiting the context manager will call the span's end method,
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as well as return the current span to its previous value by
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returning to the previous context.
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Example::
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with tracer.start_as_current_span("one") as parent:
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parent.add_event("parent's event")
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with tracer.start_as_current_span("two") as child:
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child.add_event("child's event")
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trace.get_current_span() # returns child
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trace.get_current_span() # returns parent
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trace.get_current_span() # returns previously active span
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This is a convenience method for creating spans attached to the
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tracer's context. Applications that need more control over the span
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lifetime should use :meth:`start_span` instead. For example::
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with tracer.start_as_current_span(name) as span:
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do_work()
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is equivalent to::
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span = tracer.start_span(name)
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with opentelemetry.trace.use_span(span, end_on_exit=True):
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do_work()
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This can also be used as a decorator::
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@tracer.start_as_current_span("name")
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def function():
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...
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||||
|
||||
function()
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||||
|
||||
Args:
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name: The name of the span to be created.
|
||||
context: An optional Context containing the span's parent. Defaults to the
|
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global context.
|
||||
kind: The span's kind (relationship to parent). Note that is
|
||||
meaningful even if there is no parent.
|
||||
attributes: The span's attributes.
|
||||
links: Links span to other spans
|
||||
start_time: Sets the start time of a span
|
||||
record_exception: Whether to record any exceptions raised within the
|
||||
context as error event on the span.
|
||||
set_status_on_exception: Only relevant if the returned span is used
|
||||
in a with/context manager. Defines whether the span status will
|
||||
be automatically set to ERROR when an uncaught exception is
|
||||
raised in the span with block. The span status won't be set by
|
||||
this mechanism if it was previously set manually.
|
||||
end_on_exit: Whether to end the span automatically when leaving the
|
||||
context manager.
|
||||
|
||||
Yields:
|
||||
The newly-created span.
|
||||
"""
|
||||
|
||||
|
||||
class ProxyTracer(Tracer):
|
||||
# pylint: disable=W0222,signature-differs
|
||||
def __init__(
|
||||
self,
|
||||
instrumenting_module_name: str,
|
||||
instrumenting_library_version: typing.Optional[str] = None,
|
||||
schema_url: typing.Optional[str] = None,
|
||||
attributes: typing.Optional[types.Attributes] = None,
|
||||
):
|
||||
self._instrumenting_module_name = instrumenting_module_name
|
||||
self._instrumenting_library_version = instrumenting_library_version
|
||||
self._schema_url = schema_url
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||||
self._attributes = attributes
|
||||
self._real_tracer: Optional[Tracer] = None
|
||||
self._noop_tracer = NoOpTracer()
|
||||
|
||||
@property
|
||||
def _tracer(self) -> Tracer:
|
||||
if self._real_tracer:
|
||||
return self._real_tracer
|
||||
|
||||
if _TRACER_PROVIDER:
|
||||
self._real_tracer = _TRACER_PROVIDER.get_tracer(
|
||||
self._instrumenting_module_name,
|
||||
self._instrumenting_library_version,
|
||||
self._schema_url,
|
||||
self._attributes,
|
||||
)
|
||||
return self._real_tracer
|
||||
return self._noop_tracer
|
||||
|
||||
def start_span(self, *args, **kwargs) -> Span: # type: ignore
|
||||
return self._tracer.start_span(*args, **kwargs) # type: ignore
|
||||
|
||||
@_agnosticcontextmanager # type: ignore
|
||||
def start_as_current_span(self, *args, **kwargs) -> Iterator[Span]:
|
||||
with self._tracer.start_as_current_span(*args, **kwargs) as span: # type: ignore
|
||||
yield span
|
||||
|
||||
|
||||
class NoOpTracer(Tracer):
|
||||
"""The default Tracer, used when no Tracer implementation is available.
|
||||
|
||||
All operations are no-op.
|
||||
"""
|
||||
|
||||
def start_span(
|
||||
self,
|
||||
name: str,
|
||||
context: Optional[Context] = None,
|
||||
kind: SpanKind = SpanKind.INTERNAL,
|
||||
attributes: types.Attributes = None,
|
||||
links: _Links = None,
|
||||
start_time: Optional[int] = None,
|
||||
record_exception: bool = True,
|
||||
set_status_on_exception: bool = True,
|
||||
) -> "Span":
|
||||
return INVALID_SPAN
|
||||
|
||||
@_agnosticcontextmanager
|
||||
def start_as_current_span(
|
||||
self,
|
||||
name: str,
|
||||
context: Optional[Context] = None,
|
||||
kind: SpanKind = SpanKind.INTERNAL,
|
||||
attributes: types.Attributes = None,
|
||||
links: _Links = None,
|
||||
start_time: Optional[int] = None,
|
||||
record_exception: bool = True,
|
||||
set_status_on_exception: bool = True,
|
||||
end_on_exit: bool = True,
|
||||
) -> Iterator["Span"]:
|
||||
yield INVALID_SPAN
|
||||
|
||||
|
||||
@deprecated(version="1.9.0", reason="You should use NoOpTracer") # type: ignore
|
||||
class _DefaultTracer(NoOpTracer):
|
||||
"""The default Tracer, used when no Tracer implementation is available.
|
||||
|
||||
All operations are no-op.
|
||||
"""
|
||||
|
||||
|
||||
_TRACER_PROVIDER_SET_ONCE = Once()
|
||||
_TRACER_PROVIDER: Optional[TracerProvider] = None
|
||||
_PROXY_TRACER_PROVIDER = ProxyTracerProvider()
|
||||
|
||||
|
||||
def get_tracer(
|
||||
instrumenting_module_name: str,
|
||||
instrumenting_library_version: typing.Optional[str] = None,
|
||||
tracer_provider: Optional[TracerProvider] = None,
|
||||
schema_url: typing.Optional[str] = None,
|
||||
attributes: typing.Optional[types.Attributes] = None,
|
||||
) -> "Tracer":
|
||||
"""Returns a `Tracer` for use by the given instrumentation library.
|
||||
|
||||
This function is a convenience wrapper for
|
||||
opentelemetry.trace.TracerProvider.get_tracer.
|
||||
|
||||
If tracer_provider is omitted the current configured one is used.
|
||||
"""
|
||||
if tracer_provider is None:
|
||||
tracer_provider = get_tracer_provider()
|
||||
return tracer_provider.get_tracer(
|
||||
instrumenting_module_name,
|
||||
instrumenting_library_version,
|
||||
schema_url,
|
||||
attributes,
|
||||
)
|
||||
|
||||
|
||||
def _set_tracer_provider(tracer_provider: TracerProvider, log: bool) -> None:
|
||||
def set_tp() -> None:
|
||||
global _TRACER_PROVIDER # pylint: disable=global-statement
|
||||
_TRACER_PROVIDER = tracer_provider
|
||||
|
||||
did_set = _TRACER_PROVIDER_SET_ONCE.do_once(set_tp)
|
||||
|
||||
if log and not did_set:
|
||||
logger.warning("Overriding of current TracerProvider is not allowed")
|
||||
|
||||
|
||||
def set_tracer_provider(tracer_provider: TracerProvider) -> None:
|
||||
"""Sets the current global :class:`~.TracerProvider` object.
|
||||
|
||||
This can only be done once, a warning will be logged if any further attempt
|
||||
is made.
|
||||
"""
|
||||
_set_tracer_provider(tracer_provider, log=True)
|
||||
|
||||
|
||||
def get_tracer_provider() -> TracerProvider:
|
||||
"""Gets the current global :class:`~.TracerProvider` object."""
|
||||
if _TRACER_PROVIDER is None:
|
||||
# if a global tracer provider has not been set either via code or env
|
||||
# vars, return a proxy tracer provider
|
||||
if OTEL_PYTHON_TRACER_PROVIDER not in os.environ:
|
||||
return _PROXY_TRACER_PROVIDER
|
||||
|
||||
tracer_provider: TracerProvider = _load_provider(
|
||||
OTEL_PYTHON_TRACER_PROVIDER, "tracer_provider"
|
||||
)
|
||||
_set_tracer_provider(tracer_provider, log=False)
|
||||
# _TRACER_PROVIDER will have been set by one thread
|
||||
return cast("TracerProvider", _TRACER_PROVIDER)
|
||||
|
||||
|
||||
@_agnosticcontextmanager
|
||||
def use_span(
|
||||
span: Span,
|
||||
end_on_exit: bool = False,
|
||||
record_exception: bool = True,
|
||||
set_status_on_exception: bool = True,
|
||||
) -> Iterator[Span]:
|
||||
"""Takes a non-active span and activates it in the current context.
|
||||
|
||||
Args:
|
||||
span: The span that should be activated in the current context.
|
||||
end_on_exit: Whether to end the span automatically when leaving the
|
||||
context manager scope.
|
||||
record_exception: Whether to record any exceptions raised within the
|
||||
context as error event on the span.
|
||||
set_status_on_exception: Only relevant if the returned span is used
|
||||
in a with/context manager. Defines whether the span status will
|
||||
be automatically set to ERROR when an uncaught exception is
|
||||
raised in the span with block. The span status won't be set by
|
||||
this mechanism if it was previously set manually.
|
||||
"""
|
||||
try:
|
||||
token = context_api.attach(context_api.set_value(_SPAN_KEY, span))
|
||||
try:
|
||||
yield span
|
||||
finally:
|
||||
context_api.detach(token)
|
||||
|
||||
# Record only exceptions that inherit Exception class but not BaseException, because
|
||||
# classes that directly inherit BaseException are not technically errors, e.g. GeneratorExit.
|
||||
# See https://github.com/open-telemetry/opentelemetry-python/issues/4484
|
||||
except Exception as exc: # pylint: disable=broad-exception-caught
|
||||
if isinstance(span, Span) and span.is_recording():
|
||||
# Record the exception as an event
|
||||
if record_exception:
|
||||
span.record_exception(exc)
|
||||
|
||||
# Set status in case exception was raised
|
||||
if set_status_on_exception:
|
||||
span.set_status(
|
||||
Status(
|
||||
status_code=StatusCode.ERROR,
|
||||
description=f"{type(exc).__name__}: {exc}",
|
||||
)
|
||||
)
|
||||
|
||||
# This causes parent spans to set their status to ERROR and to record
|
||||
# an exception as an event if a child span raises an exception even if
|
||||
# such child span was started with both record_exception and
|
||||
# set_status_on_exception attributes set to False.
|
||||
raise
|
||||
|
||||
finally:
|
||||
if end_on_exit:
|
||||
span.end()
|
||||
|
||||
|
||||
__all__ = [
|
||||
"DEFAULT_TRACE_OPTIONS",
|
||||
"DEFAULT_TRACE_STATE",
|
||||
"INVALID_SPAN",
|
||||
"INVALID_SPAN_CONTEXT",
|
||||
"INVALID_SPAN_ID",
|
||||
"INVALID_TRACE_ID",
|
||||
"NonRecordingSpan",
|
||||
"Link",
|
||||
"Span",
|
||||
"SpanContext",
|
||||
"SpanKind",
|
||||
"TraceFlags",
|
||||
"TraceState",
|
||||
"TracerProvider",
|
||||
"Tracer",
|
||||
"format_span_id",
|
||||
"format_trace_id",
|
||||
"get_current_span",
|
||||
"get_tracer",
|
||||
"get_tracer_provider",
|
||||
"set_tracer_provider",
|
||||
"set_span_in_context",
|
||||
"use_span",
|
||||
"Status",
|
||||
"StatusCode",
|
||||
]
|
||||
Reference in New Issue
Block a user