# Copyright The OpenTelemetry Authors
# SPDX-License-Identifier: Apache-2.0
from opentelemetry.context import create_key, get_value, set_value
from opentelemetry.context.context import Context
from opentelemetry.trace.span import INVALID_SPAN, Span
SPAN_KEY = "current-span"
_SPAN_KEY = create_key("current-span")
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def set_span_in_context(span: Span, context: Context | None = None) -> Context:
"""Set the span in the given context.
Args:
span: The Span to set.
context: a Context object. if one is not passed, the
default current context is used instead.
"""
ctx = set_value(_SPAN_KEY, span, context=context)
return ctx
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def get_current_span(context: Context | None = None) -> Span:
"""Retrieve the current span.
Args:
context: A Context object. If one is not passed, the
default current context is used instead.
Returns:
The Span set in the context if it exists. INVALID_SPAN otherwise.
"""
span = get_value(_SPAN_KEY, context=context)
if span is None or not isinstance(span, Span):
return INVALID_SPAN
return span