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# Copyright The OpenTelemetry Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import asyncio
from opentelemetry import baggage, trace
from opentelemetry.sdk.trace import TracerProvider
trace.set_tracer_provider(TracerProvider())
tracer = trace.get_tracer(__name__)
loop = asyncio.get_event_loop()
async def async_span(span):
with trace.use_span(span):
ctx = baggage.set_baggage("foo", "bar")
return ctx
async def main():
span = tracer.start_span(name="span")
ctx = await async_span(span)
print(baggage.get_all(context=ctx))
loop.run_until_complete(main())
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