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from __future__ import annotations
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from typing import Any, Dict, List, Optional
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import os, json, requests
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from tenacity import retry, stop_after_attempt, wait_exponential
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try:
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from gradio_client import Client as GradioClient
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except Exception:
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GradioClient = None
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class BaseRemoteClient:
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def __init__(self, base_url: str, use_gradio: bool = True, hf_token: Optional[str] = None, timeout: int = 180):
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self.base_url = base_url.rstrip("/")
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self.use_gradio = use_gradio and GradioClient is not None
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self.hf_token = hf_token or os.getenv("HF_TOKEN")
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self.timeout = timeout
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self._client = None
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if self.use_gradio:
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headers = {"Authorization": f"Bearer {self.hf_token}"} if self.hf_token else None
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self._client = GradioClient(self.base_url, hf_token=self.hf_token, headers=headers)
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@retry(stop=stop_after_attempt(3), wait=wait_exponential(multiplier=1, min=1, max=8))
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def _post_json(self, route: str, payload: Dict[str, Any]) -> Dict[str, Any]:
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url = f"{self.base_url}{route}"
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headers = {"Authorization": f"Bearer {self.hf_token}"} if self.hf_token else {}
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r = requests.post(url, json=payload, headers=headers, timeout=self.timeout)
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r.raise_for_status()
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return r.json()
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class InstructClient(BaseRemoteClient):
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def generate(self, prompt: str, system: Optional[str] = None, **kwargs) -> str:
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if self.use_gradio and self._client:
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out = self._client.predict(prompt, api_name="/predict")
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return str(out)
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data = {"prompt": prompt, "system": system, **kwargs}
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res = self._post_json("/generate", data)
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return res.get("text", "")
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class VisionClient(BaseRemoteClient):
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def describe(self, image_paths: List[str], context: Optional[Dict[str, Any]] = None, **kwargs) -> List[str]:
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if self.use_gradio and self._client:
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out = self._client.predict(image_paths, json.dumps(context or {}), api_name="/predict")
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if isinstance(out, str):
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try:
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return json.loads(out)
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except Exception:
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return [out]
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return list(out)
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data = {"images": image_paths, "context": context or {}, **kwargs}
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res = self._post_json("/describe", data)
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return res.get("descriptions", [])
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class ToolsClient(BaseRemoteClient):
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def chat(self, messages: List[Dict[str, str]], tools: Optional[List[Dict[str, Any]]] = None, **kwargs) -> Dict[str, Any]:
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if self.use_gradio and self._client:
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out = self._client.predict(json.dumps(messages), json.dumps(tools or []), api_name="/predict")
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if isinstance(out, str):
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try:
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return json.loads(out)
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except Exception:
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return {"text": out}
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return out
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data = {"messages": messages, "tools": tools or [], **kwargs}
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return self._post_json("/chat", data)
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class ASRClient(BaseRemoteClient):
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def transcribe(self, audio_path: str, **kwargs) -> Dict[str, Any]:
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if self.use_gradio and self._client:
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out = self._client.predict(audio_path, api_name="/predict")
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if isinstance(out, str):
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return {"text": out}
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return out
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files = {"file": open(audio_path, "rb")}
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headers = {"Authorization": f"Bearer {self.hf_token}"} if self.hf_token else {}
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r = requests.post(f"{self.base_url}/transcribe", files=files, data=kwargs, headers=headers, timeout=self.timeout)
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r.raise_for_status()
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return r.json()
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