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59 lines
1.9 KiB
Python
59 lines
1.9 KiB
Python
# ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========
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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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# ========= Copyright 2025-2026 @ Eigent.ai All Rights Reserved. =========
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"""
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Trace ID context for v1 request lifecycle.
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Uses contextvars to propagate trace_id through the request and into downstream
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calls (httpx, Celery, Redis pub/sub).
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"""
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import uuid
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from contextvars import ContextVar
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_trace_id_ctx: ContextVar[str | None] = ContextVar("trace_id", default=None)
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def get_trace_id() -> str | None:
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"""Get the current trace ID from context, or None if not set."""
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return _trace_id_ctx.get()
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def set_trace_id(trace_id: str) -> None:
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"""Set the trace ID in the current context."""
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_trace_id_ctx.set(trace_id)
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def generate_trace_id() -> str:
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"""Generate a new UUID v4 trace ID."""
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return str(uuid.uuid4())
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def ensure_trace_id(trace_id: str | None) -> str:
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"""
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Use provided trace_id if valid (UUID format), otherwise generate new one.
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Returns the trace_id to use. Does NOT set context - caller must call set_trace_id.
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"""
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if trace_id and _is_valid_uuid(trace_id):
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return trace_id
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return generate_trace_id()
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def _is_valid_uuid(value: str) -> bool:
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"""Check if string is a valid UUID v4."""
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try:
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uuid.UUID(value, version=4)
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return True
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except (ValueError, TypeError):
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return False
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