268 lines
11 KiB
Python
268 lines
11 KiB
Python
import base64
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import aiohttp
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from astrbot.core.utils.io import download_image_by_url
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from astrbot.core.db import BaseDatabase
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from astrbot.api.provider import Provider, Personality
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from astrbot import logger
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from astrbot.core.provider.func_tool_manager import FuncCall
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from typing import List
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from ..register import register_provider_adapter
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from astrbot.core.provider.entites import LLMResponse
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class SimpleGoogleGenAIClient():
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def __init__(self, api_key: str, api_base: str, timeout: int=120) -> None:
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self.api_key = api_key
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if api_base.endswith("/"):
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self.api_base = api_base[:-1]
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else:
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self.api_base = api_base
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self.client = aiohttp.ClientSession(trust_env=True)
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self.timeout = timeout
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async def models_list(self) -> List[str]:
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request_url = f"{self.api_base}/v1beta/models?key={self.api_key}"
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async with self.client.get(request_url, timeout=self.timeout) as resp:
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response = await resp.json()
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models = []
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for model in response["models"]:
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if 'generateContent' in model["supportedGenerationMethods"]:
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models.append(model["name"].replace("models/", ""))
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return models
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async def generate_content(
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self,
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contents: List[dict],
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model: str="gemini-1.5-flash",
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system_instruction: str="",
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tools: dict=None
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):
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payload = {}
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if system_instruction:
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payload["system_instruction"] = {
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"parts": {"text": system_instruction}
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}
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if tools:
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payload["tools"] = [tools]
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payload["contents"] = contents
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logger.debug(f"payload: {payload}")
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request_url = f"{self.api_base}/v1beta/models/{model}:generateContent?key={self.api_key}"
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async with self.client.post(request_url, json=payload, timeout=self.timeout) as resp:
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if "application/json" in resp.headers.get("Content-Type"):
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try:
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response = await resp.json()
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except Exception as e:
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text = await resp.text()
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logger.error(f"Gemini 返回了非 json 数据: {text}")
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raise e
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return response
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else:
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text = await resp.text()
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logger.error(f"Gemini 返回了非 json 数据: {text}")
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raise Exception("Gemini 返回了非 json 数据： ")
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@register_provider_adapter("googlegenai_chat_completion", "Google Gemini Chat Completion 提供商适配器")
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class ProviderGoogleGenAI(Provider):
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def __init__(
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self,
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provider_config: dict,
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provider_settings: dict,
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db_helper: BaseDatabase,
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persistant_history = True,
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default_persona: Personality=None
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) -> None:
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super().__init__(provider_config, provider_settings, persistant_history, db_helper, default_persona)
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self.chosen_api_key = None
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self.api_keys: List = provider_config.get("key", [])
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self.chosen_api_key = self.api_keys[0] if len(self.api_keys) > 0 else None
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self.timeout = provider_config.get("timeout", 180)
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if isinstance(self.timeout, str):
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self.timeout = int(self.timeout)
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self.client = SimpleGoogleGenAIClient(
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api_key=self.chosen_api_key,
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api_base=provider_config.get("api_base", None),
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timeout=self.timeout
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)
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self.set_model(provider_config['model_config']['model'])
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async def get_models(self):
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return await self.client.models_list()
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async def _query(self, payloads: dict, tools: FuncCall) -> LLMResponse:
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tool = None
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if tools:
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tool = tools.get_func_desc_google_genai_style()
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if not tool:
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tool = None
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system_instruction = ""
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for message in payloads["messages"]:
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if message["role"] == "system":
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system_instruction = message["content"]
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break
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google_genai_conversation = []
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for message in payloads["messages"]:
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if message["role"] == "user":
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if isinstance(message["content"], str):
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if not message['content']:
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message['content'] = "<empty_content>"
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google_genai_conversation.append({
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"role": "user",
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"parts": [{"text": message["content"]}]
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})
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elif isinstance(message["content"], list):
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# images
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parts = []
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for part in message["content"]:
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if part["type"] == "text":
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if not part["text"]:
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part["text"] = "<empty_content>"
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parts.append({"text": part["text"]})
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elif part["type"] == "image_url":
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parts.append({"inline_data": {
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"mime_type": "image/jpeg",
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"data": part["image_url"]["url"].replace("data:image/jpeg;base64,", "") # base64
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}})
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google_genai_conversation.append({
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"role": "user",
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"parts": parts
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})
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elif message["role"] == "assistant":
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if not message["content"]:
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message["content"] = "<empty_content>"
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google_genai_conversation.append({
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"role": "model",
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"parts": [{"text": message["content"]}]
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})
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logger.debug(f"google_genai_conversation: {google_genai_conversation}")
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result = await self.client.generate_content(
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contents=google_genai_conversation,
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model=self.get_model(),
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system_instruction=system_instruction,
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tools=tool
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)
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logger.debug(f"result: {result}")
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if "candidates" not in result:
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raise Exception("Gemini 返回异常结果: " + str(result))
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candidates = result["candidates"][0]['content']['parts']
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llm_response = LLMResponse("assistant")
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for candidate in candidates:
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if 'text' in candidate:
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llm_response.completion_text += candidate['text']
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elif 'functionCall' in candidate:
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llm_response.role = "tool"
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llm_response.tools_call_args.append(candidate['functionCall']['args'])
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llm_response.tools_call_name.append(candidate['functionCall']['name'])
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llm_response.completion_text = llm_response.completion_text.strip()
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return llm_response
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async def text_chat(
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self,
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prompt: str,
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session_id: str = None,
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image_urls: List[str]=None,
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func_tool: FuncCall=None,
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contexts=[],
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system_prompt=None,
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**kwargs
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) -> LLMResponse:
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new_record = await self.assemble_context(prompt, image_urls)
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context_query = []
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context_query = [*contexts, new_record]
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if system_prompt:
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context_query.insert(0, {"role": "system", "content": system_prompt})
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for part in context_query:
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if '_no_save' in part:
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del part['_no_save']
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model_config = self.provider_config.get("model_config", {})
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model_config['model'] = self.get_model()
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payloads = {
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"messages": context_query,
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**model_config
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}
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llm_response = None
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try:
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llm_response = await self._query(payloads, func_tool)
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except Exception as e:
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if "maximum context length" in str(e):
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retry_cnt = 20
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while retry_cnt > 0:
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logger.warning(f"请求失败：{e}。上下文长度超过限制。尝试弹出最早的记录然后重试。当前记录条数: {len(context_query)}")
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try:
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await self.pop_record(context_query)
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llm_response = await self._query(payloads, func_tool)
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break
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except Exception as e:
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if "maximum context length" in str(e):
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retry_cnt -= 1
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else:
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raise e
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if retry_cnt == 0:
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llm_response = LLMResponse("err", "err: 请尝试 /reset 重置会话")
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elif "Function calling is not enabled" in str(e):
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logger.info(f"{self.get_model()} 不支持函数工具调用，已自动去除，不影响使用。")
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if 'tools' in payloads:
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del payloads['tools']
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llm_response = await self._query(payloads, None)
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else:
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logger.error(f"发生了错误(gemini_source)。Provider 配置如下: {self.provider_config}")
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raise e
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return llm_response
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def get_current_key(self) -> str:
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return self.client.api_key
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def get_keys(self) -> List[str]:
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return self.api_keys
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def set_key(self, key):
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self.client.api_key = key
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async def assemble_context(self, text: str, image_urls: List[str] = None):
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'''
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组装上下文。
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'''
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if image_urls:
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user_content = {"role": "user","content": [{"type": "text", "text": text}]}
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for image_url in image_urls:
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if image_url.startswith("http"):
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image_path = await download_image_by_url(image_url)
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image_data = await self.encode_image_bs64(image_path)
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elif image_url.startswith("file:///"):
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image_path = image_url.replace("file:///", "")
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image_data = await self.encode_image_bs64(image_path)
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else:
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image_data = await self.encode_image_bs64(image_url)
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if not image_data:
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logger.warning(f"图片 {image_url} 得到的结果为空，将忽略。")
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continue
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user_content["content"].append({"type": "image_url", "image_url": {"url": image_data}})
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return user_content
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else:
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return {"role": "user","content": text}
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async def encode_image_bs64(self, image_url: str) -> str:
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'''
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将图片转换为 base64
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'''
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if image_url.startswith("base64://"):
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return image_url.replace("base64://", "data:image/jpeg;base64,")
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with open(image_url, "rb") as f:
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image_bs64 = base64.b64encode(f.read()).decode('utf-8')
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return "data:image/jpeg;base64," + image_bs64
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return '' |