wehub-resource-sync
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76 lines
2.8 KiB
Python
76 lines
2.8 KiB
Python
"""Google Vertex AI provider profile.
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vertex: Gemini models via Google Cloud's OpenAI-compatible endpoint.
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Auth is OAuth2 — short-lived access tokens minted from a service-account JSON
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or Application Default Credentials (ADC), NOT a static API key. Token
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resolution and refresh live in ``agent/vertex_adapter.py``; runtime_provider.py
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calls it to obtain a fresh ``(token, base_url)`` pair, then hands the token to
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the standard OpenAI client as ``api_key``. Because the wire format is the
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OpenAI-compatible chat/completions surface, no message translation is needed —
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the only Gemini-specific concern is the ``thinking_config`` reasoning hook,
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which is emitted here exactly as the ``gemini`` provider does for its
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OpenAI-compat subpath (``extra_body.google.thinking_config``).
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``auth_type="vertex"`` marks this as an OAuth-token provider (resolved
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specially, like bedrock's ``aws_sdk``) so it is never treated as an
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api_key provider that would mistake a credentials-file path for a key.
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"""
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from typing import Any
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from providers import register_provider
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from providers.base import ProviderProfile
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class VertexProfile(ProviderProfile):
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"""Vertex AI — reuse Gemini's thinking_config translation for extra_body."""
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def build_extra_body(
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self, *, session_id: str | None = None, **context: Any
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) -> dict[str, Any]:
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"""Emit ``extra_body.google.thinking_config`` for the OpenAI-compat
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Vertex surface, mirroring the ``gemini`` provider's behavior.
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"""
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from agent.transports.chat_completions import (
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_build_gemini_thinking_config,
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_snake_case_gemini_thinking_config,
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)
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model = context.get("model") or ""
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reasoning_config = context.get("reasoning_config")
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raw_thinking_config = _build_gemini_thinking_config(model, reasoning_config)
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if not raw_thinking_config:
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return {}
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thinking_config = _snake_case_gemini_thinking_config(raw_thinking_config)
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if not thinking_config:
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return {}
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return {"extra_body": {"google": {"thinking_config": thinking_config}}}
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def fetch_models(
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self,
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*,
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api_key: str | None = None,
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base_url: str | None = None,
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timeout: float = 8.0,
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) -> list[str] | None:
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"""Vertex's OpenAI-compat endpoint has no ``/models`` listing route;
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model discovery is not available. The setup wizard ships a curated list.
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"""
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return None
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vertex = VertexProfile(
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name="vertex",
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aliases=("google-vertex", "vertex-ai", "gcp-vertex"),
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api_mode="chat_completions",
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env_vars=(), # OAuth2 via service account / ADC — not a static key env var
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base_url="https://aiplatform.googleapis.com", # real base_url computed at runtime
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auth_type="vertex",
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default_aux_model="google/gemini-3-flash-preview",
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)
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register_provider(vertex)
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