solar-rl / code /src /solarchain_eval /agent /llm_client.py
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from __future__ import annotations
import json
import os
from typing import Any
from .schemas import (
AuditorOutput,
PlannerOutput,
auditor_json_schema,
planner_json_schema,
)
class OpenAICompatibleClient:
"""OpenAI SDK client using strict structured outputs with chat fallback."""
def __init__(
self,
*,
api_key: str,
model: str,
base_url: str | None = None,
provider: str = "openai",
timeout: float = 60.0,
) -> None:
try:
from openai import OpenAI
except ModuleNotFoundError as exc: # pragma: no cover - depends on runtime environment.
raise RuntimeError("The openai package is required for OpenAICompatibleClient.") from exc
self.provider = provider
self.model = model
self.failure_count = 0
kwargs: dict[str, Any] = {"api_key": api_key, "timeout": timeout}
if base_url:
kwargs["base_url"] = base_url
self._client = OpenAI(**kwargs)
def plan_structured(self, messages: list[dict[str, str]]) -> PlannerOutput:
try:
return self._responses_parse(messages, PlannerOutput)
except Exception:
try:
return PlannerOutput.model_validate(
self._chat_json_schema(messages, "planner_output", planner_json_schema())
)
except Exception:
self.failure_count += 1
raise
def audit_structured(self, messages: list[dict[str, str]]) -> AuditorOutput:
try:
return self._responses_parse(messages, AuditorOutput)
except Exception:
try:
return AuditorOutput.model_validate(
self._chat_json_schema(messages, "auditor_output", auditor_json_schema())
)
except Exception:
self.failure_count += 1
raise
def _responses_parse(self, messages: list[dict[str, str]], model_type: type[Any]) -> Any:
response = self._client.responses.parse(
model=self.model,
input=messages,
text_format=model_type,
)
parsed = getattr(response, "output_parsed", None)
if parsed is None:
raise ValueError("Responses structured parse returned no parsed output.")
return parsed
def _chat_json_schema(self, messages: list[dict[str, str]], schema_name: str, schema: dict[str, Any]) -> dict[str, Any]:
response = self._client.chat.completions.create(
model=self.model,
messages=messages,
response_format={
"type": "json_schema",
"json_schema": {
"name": schema_name,
"strict": True,
"schema": schema,
},
},
temperature=0,
)
message = response.choices[0].message
refusal = getattr(message, "refusal", None)
if refusal:
raise ValueError(f"Structured output refusal: {refusal}")
content = message.content
if not content:
raise ValueError("Structured output response was empty.")
return json.loads(content)
def make_llm_client(
*,
provider: str | None = None,
model: str | None = None,
base_url: str | None = None,
api_key: str | None = None,
) -> OpenAICompatibleClient:
resolved_provider = provider or os.getenv("SOLARCHAIN_LLM_PROVIDER") or "openai"
resolved_api_key = api_key or os.getenv("SOLARCHAIN_LLM_API_KEY") or os.getenv("OPENAI_API_KEY")
resolved_base_url = base_url or os.getenv("SOLARCHAIN_LLM_BASE_URL") or os.getenv("OPENAI_BASE_URL")
resolved_model = model or os.getenv("SOLARCHAIN_LLM_MODEL") or os.getenv("OPENAI_MODEL")
if not resolved_api_key:
raise RuntimeError(
"LLM API key is required for --planner llm or --auditor llm. "
"Set SOLARCHAIN_LLM_API_KEY or OPENAI_API_KEY."
)
if not resolved_model:
raise RuntimeError(
"LLM model is required for --planner llm or --auditor llm. "
"Set SOLARCHAIN_LLM_MODEL or OPENAI_MODEL."
)
return OpenAICompatibleClient(
api_key=resolved_api_key,
model=resolved_model,
base_url=resolved_base_url,
provider=resolved_provider,
)