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# Copyright (c) 2016 Uber Technologies, Inc.
#
# 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 opentracing
from typing import Dict, Optional
class SpanContext(opentracing.SpanContext):
__slots__ = ['trace_id', 'span_id', 'parent_id', 'flags',
'_baggage', '_debug_id']
"""Implements opentracing.SpanContext"""
def __init__(
self,
trace_id: int,
span_id: int,
parent_id: Optional[int],
flags: int,
baggage: Optional[Dict[str, str]] = None,
debug_id: Optional[str] = None
) -> None:
self.trace_id = trace_id
self.span_id = span_id
self.parent_id = parent_id or None
self.flags = flags
self._baggage = baggage or opentracing.SpanContext.EMPTY_BAGGAGE
self._debug_id = debug_id
@property
def baggage(self) -> Dict[str, str]:
return self._baggage or opentracing.SpanContext.EMPTY_BAGGAGE
def with_baggage_item(self, key: str, value: Optional[str]) -> 'SpanContext':
baggage = dict(self._baggage)
if value is not None:
baggage[key] = value
else:
baggage.pop(key, None)
return SpanContext(
trace_id=self.trace_id,
span_id=self.span_id,
parent_id=self.parent_id,
flags=self.flags,
baggage=baggage,
)
@property
def has_trace(self) -> bool:
return bool(self.trace_id and self.span_id and self.flags is not None)
@property
def is_debug_id_container_only(self) -> bool:
"""Deprecated, not used by Jaeger."""
return not self.trace_id and self._debug_id is not None
@property
def debug_id(self) -> Optional[str]:
return self._debug_id
@staticmethod
def with_debug_id(debug_id):
"""Deprecated, not used by Jaeger."""
ctx = SpanContext(
trace_id=None, span_id=None, parent_id=None, flags=None
)
ctx._debug_id = debug_id
return ctx
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