mirror of
https://github.com/xinnan-tech/xiaozhi-esp32-server.git
synced 2026-07-22 23:23:55 +08:00
Merge branch 'refs/heads/feature/gemini-llm' into update/enhance-gemini-with-proxy
This commit is contained in:
caixypromise
@@ -1,140 +1,133 @@
|
||||
import google.generativeai as genai
|
||||
from core.utils.util import check_model_key
|
||||
from core.providers.llm.base import LLMProviderBase
|
||||
from config.logger import setup_logging
|
||||
import requests
|
||||
import json
|
||||
# core/providers/llm/gemini_sdk.py
|
||||
import os, json, uuid
|
||||
from types import SimpleNamespace
|
||||
from typing import Any, Dict, List
|
||||
|
||||
from google import generativeai as genai
|
||||
from google.generativeai import types, GenerationConfig
|
||||
|
||||
from core.providers.llm.base import LLMProviderBase
|
||||
from core.utils.util import check_model_key
|
||||
from config.logger import setup_logging
|
||||
from google.generativeai.types import GenerateContentResponse
|
||||
|
||||
log = setup_logging()
|
||||
TAG = __name__
|
||||
logger = setup_logging()
|
||||
|
||||
|
||||
class LLMProvider(LLMProviderBase):
|
||||
def __init__(self, config):
|
||||
"""初始化Gemini LLM Provider"""
|
||||
self.model_name = config.get("model_name", "gemini-1.5-pro")
|
||||
self.api_key = config.get("api_key")
|
||||
self.http_proxy = config.get("http_proxy")
|
||||
self.https_proxy = config.get("https_proxy")
|
||||
have_key = check_model_key("LLM", self.api_key)
|
||||
def __init__(self, cfg: Dict[str, Any]):
|
||||
self.model_name = cfg.get("model_name", "gemini-2.0-flash")
|
||||
self.api_key = cfg["api_key"]
|
||||
proxy = cfg.get("https_proxy") or cfg.get("http_proxy")
|
||||
|
||||
if not have_key:
|
||||
return
|
||||
if not check_model_key("LLM", self.api_key):
|
||||
raise ValueError("无效的Gemini API Key，请检查是否配置正确")
|
||||
|
||||
try:
|
||||
# 初始化Gemini客户端
|
||||
# 配置代理（如果提供了代理配置）
|
||||
self.proxies = None
|
||||
if self.http_proxy is not "" or self.https_proxy is not "":
|
||||
if proxy:
|
||||
os.environ["HTTPS_PROXY"] = os.environ["HTTP_PROXY"] = proxy
|
||||
log.bind(tag=TAG).info(f"Gemini 代理地址: {proxy}")
|
||||
|
||||
self.proxies = {
|
||||
"http": self.http_proxy,
|
||||
"https": self.https_proxy,
|
||||
}
|
||||
logger.bind(tag=TAG).info(f"Gemini set proxys:{self.proxies}")
|
||||
# 使用猴子补丁修改 google-generativeai 库的请求会话
|
||||
genai.configure(api_key=self.api_key)
|
||||
self.model = genai.GenerativeModel(self.model_name)
|
||||
|
||||
# 使用 session 对象配置 genai
|
||||
self.gen_cfg = GenerationConfig(
|
||||
temperature=0.7,
|
||||
top_p=0.9,
|
||||
top_k=40,
|
||||
max_output_tokens=2048,
|
||||
)
|
||||
|
||||
genai.configure(api_key=self.api_key)
|
||||
self.model = genai.GenerativeModel(self.model_name)
|
||||
|
||||
# 设置生成参数
|
||||
self.generation_config = {
|
||||
"temperature": 0.7,
|
||||
"top_p": 0.9,
|
||||
"top_k": 40,
|
||||
"max_output_tokens": 2048,
|
||||
}
|
||||
self.chat = None
|
||||
except Exception as e:
|
||||
logger.bind(tag=TAG).error(f"Gemini初始化失败: {e}")
|
||||
self.model = None
|
||||
@staticmethod
|
||||
def _build_tools(funcs: List[Dict[str, Any]] | None):
|
||||
if not funcs:
|
||||
return None
|
||||
return [types.Tool(function_declarations=[
|
||||
types.FunctionDeclaration(
|
||||
name=f["function"]["name"],
|
||||
description=f["function"]["description"],
|
||||
parameters=f["function"]["parameters"],
|
||||
)
|
||||
for f in funcs
|
||||
])]
|
||||
|
||||
# Gemini文档提到，无需维护session-id，直接用dialogue拼接而成
|
||||
def response(self, session_id, dialogue):
|
||||
"""生成Gemini对话响应"""
|
||||
if not self.model:
|
||||
yield "【Gemini服务未正确初始化】"
|
||||
return
|
||||
|
||||
try:
|
||||
# 处理对话历史
|
||||
chat_history = []
|
||||
for msg in dialogue[:-1]: # 历史对话
|
||||
role = "model" if msg["role"] == "assistant" else "user"
|
||||
content = msg["content"].strip()
|
||||
if content:
|
||||
chat_history.append({"role": role, "parts": [{"text": content}]})
|
||||
|
||||
# 获取当前消息
|
||||
current_msg = dialogue[-1]["content"]
|
||||
|
||||
# 构建请求体
|
||||
request_body = {
|
||||
"contents": chat_history
|
||||
+ [{"role": "user", "parts": [{"text": current_msg}]}],
|
||||
"generationConfig": self.generation_config,
|
||||
}
|
||||
|
||||
# 构建请求URL
|
||||
url = f"https://generativelanguage.googleapis.com/v1beta/models/{self.model_name}:generateContent?key={self.api_key}"
|
||||
|
||||
# 构建请求头
|
||||
headers = {
|
||||
"Content-Type": "application/json",
|
||||
}
|
||||
|
||||
# 发送POST请求,经测试手动 request 无法使用 stream 模式
|
||||
if self.proxies:
|
||||
response = requests.post(
|
||||
url,
|
||||
headers=headers,
|
||||
json=request_body,
|
||||
stream=False,
|
||||
proxies=self.proxies,
|
||||
)
|
||||
try:
|
||||
data = response.json() # 直接解析JSON
|
||||
if "candidates" in data and data["candidates"]:
|
||||
yield data["candidates"][0]["content"]["parts"][0]["text"]
|
||||
else:
|
||||
yield "未找到候选回复。"
|
||||
except json.JSONDecodeError as e:
|
||||
yield f"JSON解码错误：{e}"
|
||||
except Exception as e:
|
||||
yield f"发生错误：{e}"
|
||||
else:
|
||||
logger.bind(tag=TAG).info(f"Gemini stream mode ")
|
||||
chat = self.model.start_chat(history=chat_history)
|
||||
|
||||
# 发送消息并获取流式响应
|
||||
response = chat.send_message(
|
||||
current_msg, stream=True, generation_config=self.generation_config
|
||||
)
|
||||
# 处理流式响应
|
||||
for chunk in response:
|
||||
if hasattr(chunk, "text") and chunk.text:
|
||||
yield chunk.text
|
||||
|
||||
except Exception as e:
|
||||
error_msg = str(e)
|
||||
logger.bind(tag=TAG).error(f"Gemini响应生成错误: {error_msg}")
|
||||
|
||||
# 针对不同错误返回友好提示
|
||||
if "Rate limit" in error_msg:
|
||||
yield "【Gemini服务请求太频繁,请稍后再试】"
|
||||
elif "Invalid API key" in error_msg:
|
||||
yield "【Gemini API key无效】"
|
||||
else:
|
||||
yield f"【Gemini服务响应异常: {error_msg}】"
|
||||
|
||||
except requests.exceptions.RequestException as e:
|
||||
yield f"请求失败：{e}"
|
||||
except json.JSONDecodeError as e:
|
||||
yield f"JSON解码错误：{e}"
|
||||
except Exception as e:
|
||||
yield f"发生错误：{e}"
|
||||
yield from self._generate(dialogue, None)
|
||||
|
||||
def response_with_functions(self, session_id, dialogue, functions=None):
|
||||
logger.bind(tag=TAG).info(f"gemini暂未实现完整的工具调用（function call）")
|
||||
return self.response(session_id, dialogue)
|
||||
yield from self._generate(dialogue, self._build_tools(functions))
|
||||
|
||||
def _generate(self, dialogue, tools):
|
||||
role_map = {"assistant": "model", "user": "user"}
|
||||
contents: list = []
|
||||
# 拼接对话
|
||||
for m in dialogue:
|
||||
r = m["role"]
|
||||
|
||||
if r == "assistant" and "tool_calls" in m:
|
||||
tc = m["tool_calls"][0]
|
||||
contents.append({
|
||||
"role": "model",
|
||||
"parts": [{"function_call": {
|
||||
"name": tc["function"]["name"],
|
||||
"args": json.loads(tc["function"]["arguments"]),
|
||||
}}],
|
||||
})
|
||||
continue
|
||||
|
||||
if r == "tool":
|
||||
contents.append({
|
||||
"role": "model",
|
||||
"parts": [{"text": str(m.get("content", ""))}],
|
||||
})
|
||||
continue
|
||||
|
||||
contents.append({
|
||||
"role": role_map.get(r, "user"),
|
||||
"parts": [{"text": str(m.get("content", ""))}],
|
||||
})
|
||||
|
||||
stream: GenerateContentResponse = self.model.generate_content(
|
||||
contents=contents,
|
||||
generation_config=self.gen_cfg,
|
||||
tools=tools,
|
||||
stream=True,
|
||||
)
|
||||
|
||||
try:
|
||||
for chunk in stream:
|
||||
cand = chunk.candidates[0]
|
||||
for part in cand.content.parts:
|
||||
# a) 函数调用-通常是最后一段话才是函数调用
|
||||
if getattr(part, "function_call", None):
|
||||
fc = part.function_call
|
||||
yield None, [SimpleNamespace(
|
||||
id=uuid.uuid4().hex,
|
||||
type="function",
|
||||
function=SimpleNamespace(
|
||||
name=fc.name,
|
||||
arguments=json.dumps(dict(fc.args),
|
||||
ensure_ascii=False),
|
||||
),
|
||||
)]
|
||||
return
|
||||
# b) 普通文本
|
||||
if getattr(part, "text", None):
|
||||
yield part.text if tools is None else (part.text, None)
|
||||
|
||||
finally:
|
||||
if tools is not None:
|
||||
yield None, None # function‑mode 结束，返回哑包
|
||||
|
||||
# 关闭stream，预留后续打断对话功能的功能方法，官方文档推荐打断对话要关闭上一个流，可以有效减少配额计费和资源占用
|
||||
@staticmethod
|
||||
def _safe_finish_stream(stream: GenerateContentResponse):
|
||||
if hasattr(stream, "resolve"):
|
||||
stream.resolve() # Gemini SDK version ≥ 0.5.0
|
||||
elif hasattr(stream, "close"):
|
||||
stream.close() # Gemini SDK version < 0.5.0
|
||||
else:
|
||||
for _ in stream: # 兜底耗尽
|
||||
pass
|
||||
|
||||
Reference in New Issue
Block a user