wehub-resource-sync
b4fbd6fe9f
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73 lines
2.2 KiB
Python
73 lines
2.2 KiB
Python
"""Helpers for reading the effective fallback provider chain from config."""
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from __future__ import annotations
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from typing import Any
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def _normalized_base_url(value: Any) -> str:
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if not isinstance(value, str):
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return ""
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return value.strip().rstrip("/")
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def _iter_fallback_entries(raw: Any) -> list[dict[str, Any]]:
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if isinstance(raw, dict):
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candidates = [raw]
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elif isinstance(raw, list):
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candidates = raw
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else:
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return []
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entries: list[dict[str, Any]] = []
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for entry in candidates:
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if not isinstance(entry, dict):
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continue
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provider = str(entry.get("provider") or "").strip()
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model = str(entry.get("model") or "").strip()
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if not provider or not model:
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continue
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normalized = dict(entry)
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normalized["provider"] = provider
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normalized["model"] = model
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base_url = _normalized_base_url(entry.get("base_url"))
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if base_url:
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normalized["base_url"] = base_url
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entries.append(normalized)
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return entries
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def _entry_identity(entry: dict[str, Any]) -> tuple[str, str, str]:
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return (
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str(entry.get("provider") or "").strip().lower(),
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str(entry.get("model") or "").strip().lower(),
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_normalized_base_url(entry.get("base_url")).lower(),
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)
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def get_fallback_chain(config: dict[str, Any] | None) -> list[dict[str, Any]]:
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"""Return the effective fallback chain merged across old and new config keys.
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``fallback_providers`` remains the primary source of truth and keeps its
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order. Legacy ``fallback_model`` entries are appended afterwards unless
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they target the same provider/model/base_url route as an earlier entry.
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The returned list always contains fresh dict copies.
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"""
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config = config or {}
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chain: list[dict[str, Any]] = []
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seen: set[tuple[str, str, str]] = set()
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for key in ("fallback_providers", "fallback_model"):
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for entry in _iter_fallback_entries(config.get(key)):
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identity = _entry_identity(entry)
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if identity in seen:
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continue
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seen.add(identity)
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chain.append(entry)
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return chain
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