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c6be992 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | import os, json
from typing import Any, Dict, List, Optional, Tuple
import httpx
OPENROUTER_API_KEY = os.environ.get("OPENROUTER_API_KEY", "")
OPENROUTER_MODEL = os.environ.get("OPENROUTER_MODEL", "meta-llama/llama-3.1-8b-instruct")
def _extract_json_object(text: str) -> Optional[dict]:
"""
Best-effort: find the first top-level JSON object in a response.
Works even if the model wraps JSON with prose or code fences.
"""
if not text:
return None
# Strip common fences
t = text.strip()
t = t.removeprefix("```json").removeprefix("```").removesuffix("```").strip()
# Find first {...} span
start = t.find("{")
if start == -1:
return None
depth = 0
for i in range(start, len(t)):
if t[i] == "{":
depth += 1
elif t[i] == "}":
depth -= 1
if depth == 0:
chunk = t[start:i+1]
try:
return json.loads(chunk)
except Exception:
return None
return None
def openrouter_chat(
messages: List[Dict[str, str]],
response_format: Optional[Dict[str, Any]] = None,
temperature: float = 0.2,
max_tokens: int = 512,
timeout_s: float = 30.0,
) -> Tuple[Optional[str], Optional[dict], Optional[str]]:
"""
Returns (raw_text, parsed_json, error_str).
Never raises.
Instrumented to help diagnose moderation/routing variance:
- includes HTTP status
- includes OpenRouter error message/code if provided
"""
if not OPENROUTER_API_KEY:
return None, None, "OPENROUTER_API_KEY missing"
payload: Dict[str, Any] = {
"model": OPENROUTER_MODEL,
"messages": messages,
"temperature": temperature,
"max_tokens": max_tokens,
}
if response_format is not None:
payload["response_format"] = response_format
headers = {
"Authorization": f"Bearer {OPENROUTER_API_KEY}",
"Content-Type": "application/json",
"HTTP-Referer": "https://huggingface.co/spaces",
"X-Title": "Prompt_Squirrel_RAG",
}
try:
with httpx.Client(timeout=timeout_s) as client:
r = client.post(
"https://openrouter.ai/api/v1/chat/completions",
headers=headers,
json=payload,
)
data = r.json()
choice0 = data["choices"][0]
content = (choice0["message"].get("content", "") or "").strip()
finish_reason = choice0.get("finish_reason")
native_finish_reason = choice0.get("native_finish_reason")
# (optional) expose these as part of error_str for logging
meta = []
if data.get("model"):
meta.append(f"model={data['model']}")
if finish_reason:
meta.append(f"finish={finish_reason}")
if native_finish_reason:
meta.append(f"native_finish={native_finish_reason}")
if isinstance(data.get("usage"), dict):
u = data["usage"]
if "prompt_tokens" in u and "completion_tokens" in u:
meta.append(f"tokens={u['prompt_tokens']}+{u['completion_tokens']}")
parsed = _extract_json_object(content)
# If it looks filtered, flag it
if finish_reason == "content_filter":
return content, parsed, f"Filtered (content_filter; {'; '.join(meta)})"
# If it looks refusal-like but not content_filter, still flag it
if content.lower().startswith(("i can't", "i can’t", "i cannot", "can't", "cannot")):
return content, parsed, f"Refusal-like ({'; '.join(meta)})"
return content, parsed, None
except Exception as e:
return None, None, f"{type(e).__name__}: {e}"
if __name__ == "__main__":
print("openrouter_client.py imports ok")
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