Files
xiaoli-cli/ai_engines/ollama_engine.py
T
shuiyu67 3a86da7444 perf: 启动输出瘦身 + FC 能力探测缓存,修复测试套件失效
自用体验(同时以人类和被接入 AI 的视角)暴露出三个问题,一并处理:

1. 启动太吵:117 行 / 16983 字符的开屏,人还没开始用就先刷屏
   - 完整 ASCII 开机动画改为 --logo / --banner 按需召唤,默认两行紧凑标识
   - 21 行命令说明折叠成一行「/help 全部命令 · /quit 退出 · ...」,
     完整速查表挪进 /help(新增 show_quick_commands)
   - 插件/引擎/工具的逐条加载日志改走 vprint,由 --verbose / -v /
     XCLI_VERBOSE=1 召唤;工具加载汇总成一行
   - 日志控制台 handler 降到 WARNING(文件仍留全量 INFO),并静音
     httpx/httpcore/urllib3 等第三方心跳日志
   => 默认启动 10 行 / 475 字符,--verbose 仍可看到全部 36 行细节

2. 不支持 FC 的模型每次会话都白撞一发 500
   讯飞 xophunyuan7bmt 不支持 Function Calling,请求带 tools 字段必报
   500 Invalid Params,虽有降级重试兜底,但每个新会话都要先错一次。
   - 新增 xcli_core/fc_tools 能力缓存(按 base_url::model 落盘 .fc_support.json)
   - 降级重试成功后记住该模型不支持 FC,后续直接不发 tools
   - 降级也失败时不写缓存,避免把别的故障误判成 FC 问题
   - 新增 /fc [reset] 查看与清除缓存

3. diff 弹窗模式每次启动都要重新问一遍
   - 首次选择后经 config.json 持久化,新增 /diff [popup|inline] 随时切换

测试:
- 新增 tests/test_startup_and_fc.py(27 项,含假 HTTP 验证降级与缓存链路)
- 修复 tests/test_plugins.py 长期失效:插件入口类早已由 Plugin 改名 Liugin,
  8 处 fixture 未跟进导致 65 个用例直接 error;断言也未适配 ToolResult 返回值
  与「❌」错误前缀。改为 plugin_class() / as_text() / is_error() 语义判断。
- 全量:217 passed(此前 152 passed + 65 error + 27 failed)
2026-08-05 15:57:38 +08:00

519 lines
20 KiB
Python
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import os
import re
import sys
import json
import requests
import threading
import time
from colorama import Fore, Style
# 延迟导入 ollama,避免程序启动时卡住
# 如果导入失败,ollama_client 将为 None
try:
import ollama
ollama_client = ollama
except Exception as e:
print(f"{Fore.YELLOW}警告: 无法导入 ollama 库: {e}{Style.RESET_ALL}")
print(f"{Fore.YELLOW}请确保已安装 ollama 包 (pip install ollama){Style.RESET_ALL}")
ollama_client = None
# 添加项目根目录到sys.path
current_dir = os.path.dirname(os.path.abspath(__file__))
project_root = os.path.dirname(current_dir)
sys.path.insert(0, project_root)
try:
from xcli_core.verbose import vprint as _vprint
except Exception:
def _vprint(*args, **kwargs):
pass
# <input> 特殊语法解析(配置模型时可交互式询问用户)
try:
from xcli_core.config import resolve_input_value
except Exception:
def resolve_input_value(value, field_name="", default_prompt=None):
return value
try:
from xcli_core.tool_result import normalize_tool_text
except Exception:
def normalize_tool_text(result, default="无结果"):
"""兜底归一化:ToolResult / dict / str 统一成字符串"""
if result is None:
return default
if isinstance(result, dict):
return str(result.get("result", default))
return str(result)
class OllamaAI:
"""基于Ollama的本地AI引擎"""
requires_api_key = False # Ollama是本地引擎,不需要API密钥
def get_help_info(self):
"""获取引擎帮助信息"""
help_text = """
Ollama AI引擎插件帮助信息
========================
引擎名称: Ollama
描述: 基于Ollama的本地AI引擎,支持多种大型语言模型
可用命令:
/engine.ollama models - 列出本地可用的模型
/engine.ollama remote-models - 显示可下载的模型列表
/engine.ollama search <关键词> - 搜索可下载的模型
/engine.ollama set <模型名> - 设置当前使用的模型
/engine.ollama pull <模型名> - 从Ollama库拉取模型
注意: 本引擎强制使用流式输出,AI回复会实时显示。
使用说明:
1. 确保Ollama服务已在本地运行
2. 使用/engine.switch ollama切换到此引擎
3. 使用上述命令管理模型和与AI交互
思考模式:
- 支持深度思考模型(如 QwQ、DeepSeek-R1)
- 思考过程会自动以灰色文本显示
"""
return help_text
def __init__(self):
self.name = "ollama"
self.cli = None # 引用CLI实例以访问插件
# 初始化对话历史
self.conversation_history = []
# 直接从 config.json 读取配置
# 模型最大 token 大小(单位 K,如 32 = 32K = 32768 token)
# 支持 <input> 语法:配置里写 <input:提示语> 会在配置模型时询问用户
max_token_k = "<input:请输入模型最大token大小(K)>"
config_file = os.path.join(project_root, "config.json")
try:
with open(config_file, 'r', encoding='utf-8') as f:
config = json.load(f)
engine_config = config.get("api", {}).get("engines", {}).get("ollama", {})
self.api_key = engine_config.get("api_key", "")
self.base_url = engine_config.get("base_url", "")
self.model = engine_config.get("model", "")
self.max_history = config.get("system", {}).get("max_history", 10)
max_token_k = engine_config.get("max_token_k", max_token_k)
except Exception as e:
# 如果读取失败,使用空值
self.api_key = ""
self.base_url = ""
self.model = ""
self.max_history = 10
# 解析 <input> 语法(询问用户)并换算成 num_ctx(token 数)
resolved_k = resolve_input_value(max_token_k, field_name="模型最大token大小(K)")
self.num_ctx = self._parse_num_ctx(resolved_k)
# 共享对话历史引用(由CLI设置)
self.shared_conversation_history = None
# 直接启用思考标记,由主程序自动处理深度思考模型的响应
self.thinking_start_marker = "<thinking>"
self.thinking_end_marker = "</thinking>"
# 检测Ollama服务是否运行
self.is_service_running = self.check_ollama_service()
if self.is_service_running:
_vprint(f"{Fore.GREEN}Ollama服务检测成功,引擎已启用{Style.RESET_ALL}")
else:
print(f"{Fore.RED}Ollama服务未运行,引擎将不可用{Style.RESET_ALL}")
@staticmethod
def _parse_num_ctx(value):
"""把用户输入的 K 值换算成 token 数:32 / 32K → 32768。非法/空 → 4096"""
if value is None:
return 4096
s = str(value).strip().lower()
digits = re.sub(r"[^\d.]", "", s)
if not digits:
return 4096
try:
k = float(digits)
except ValueError:
return 4096
if k <= 0:
return 4096
return max(1024, int(k * 1024))
def check_ollama_service(self):
"""检测Ollama服务是否运行"""
# 检查 ollama 库是否可用
if ollama_client is None:
return False
try:
# 尝试调用Ollama API获取版本信息
response = ollama_client.list()
# 如果没有异常,说明服务运行正常
return True
except Exception as e:
# 如果出现异常,说明服务未运行
return False
def generate_response(self, user_input, tool_results=None, system_prompt=None, tools=None):
"""
生成AI响应 - 使用Ollama API
Args:
user_input: 用户输入
tool_results: 工具执行结果
system_prompt: 系统提示词
tools: OpenAI FC 工具定义列表 (可选)
"""
try:
# 检查Ollama服务是否运行
if not self.is_service_running:
return "错误:Ollama服务未运行,请启动Ollama服务后再使用此引擎."
# 检查模型是否已配置
if not self.model or not self.model.strip():
return ("错误:Ollama模型未配置。请执行以下操作:\n"
" 1. /engine.ollama models → 查看本地可用模型\n"
" 2. /engine.ollama set <模型名> → 设置要使用的模型\n"
" 或编辑 config.json 中 api.engines.ollama.model 字段")
# 如果有工具结果,将其作为上下文返回给AI处理
if tool_results:
tool_result_text = f"工具执行结果: {normalize_tool_text(tool_results)}"
messages = self._build_messages_with_history(system_prompt, tool_result_text)
else:
messages = self._build_messages_with_history(system_prompt, user_input)
# 构建调用参数(num_ctx: 模型上下文窗口大小,由配置的 max_token_k 决定)
kwargs = {
"model": self.model,
"messages": messages,
"stream": False,
"options": {"num_ctx": self.num_ctx}
}
# ── Function Calling: 注入工具定义 ──
if tools:
kwargs["tools"] = tools
# 使用Ollama Python库调用API
response = ollama_client.chat(**kwargs)
# ── Function Calling: 检查 tool_calls ──
message = response.get("message", {})
tool_calls_raw = message.get("tool_calls")
if tool_calls_raw:
# Ollama 的 tool_calls 格式: [{"function": {"name": ..., "arguments": {...}}}]
fc_calls = []
for i, tc in enumerate(tool_calls_raw):
func = tc.get("function", {})
name = func.get("name", "")
args = func.get("arguments", {})
call_id = f"call_{name}_{i}"
# 统一为小狸内部格式
if "args" in args and isinstance(args["args"], str):
final_args = args["args"]
elif "args" in args:
final_args = json.dumps(args["args"], ensure_ascii=False)
else:
parts = []
for k, v in args.items():
parts.append(str(v) if isinstance(v, str) else json.dumps(v, ensure_ascii=False))
final_args = " ".join(parts) if parts else ""
fc_calls.append({
"id": call_id,
"name": name,
"arguments": args,
"action": "use_tool",
"tool": name,
"args": final_args,
})
if fc_calls:
return json.dumps({
"_fc": True,
"tool_calls": fc_calls,
}, ensure_ascii=False)
# 普通文本响应
content = message.get("content", "")
# 清理无效的 UTF-8 代理字符
content = content.encode('utf-8', 'replace').decode('utf-8')
return content
except Exception as e:
return f"Ollama API调用失败: {str(e)}"
def _build_messages_with_history(self, system_prompt, user_input):
"""构建包含历史记录的消息列表(支持 FC tool 消息)"""
messages = []
# 添加系统提示词
if system_prompt:
clean_prompt = system_prompt.encode('utf-8', 'replace').decode('utf-8')
messages.append({
"role": "system",
"content": clean_prompt
})
# 添加历史对话记录(使用共享历史)
if self.shared_conversation_history is not None:
for msg in self.shared_conversation_history[-self.max_history:]:
if not isinstance(msg, dict) or "role" not in msg:
continue
role = msg["role"]
# tool 角色消息(FC 工具结果)—— 官方格式不含 name 字段
if role == "tool":
tool_msg = {"role": "tool", "content": msg.get("content", "")}
if "tool_call_id" in msg:
tool_msg["tool_call_id"] = msg["tool_call_id"]
messages.append(tool_msg)
continue
# assistant 消息可能包含 tool_calls
if role == "assistant" and "tool_calls" in msg:
assistant_msg = {
"role": "assistant",
"content": msg.get("content"),
"tool_calls": msg["tool_calls"]
}
messages.append(assistant_msg)
continue
# 普通 user/assistant 消息
if "content" in msg:
clean_content = msg["content"]
if isinstance(clean_content, str):
clean_content = clean_content.encode('utf-8', 'replace').decode('utf-8')
messages.append({"role": role, "content": clean_content})
# 清理用户输入
if user_input:
clean_input = user_input.encode('utf-8', 'replace').decode('utf-8')
messages.append({
"role": "user",
"content": clean_input
})
return messages
def _call_api_with_history(self, content, system_prompt=None):
"""使用对话历史调用API"""
if not self.is_service_running:
return "错误:Ollama服务未运行,请启动Ollama服务后再使用此引擎."
# 构建消息列表
messages = []
# 添加系统提示词(如果提供)
if system_prompt:
messages.append({
"role": "system",
"content": system_prompt
})
# 添加历史对话记录(使用共享历史)
if self.shared_conversation_history is not None:
# 确保历史记录格式正确
for msg in self.shared_conversation_history[-self.max_history:]:
if isinstance(msg, dict) and "role" in msg and "content" in msg:
messages.append(msg)
else:
# 如果格式不正确,跳过该条记录
continue
# 添加当前内容
messages.append({
"role": "tool",
"content": content
})
# 使用Ollama Python库调用API
response = ollama_client.chat(
model=self.model,
messages=messages,
stream=False
)
return response["message"]["content"]
def set_model(self, model_name):
"""设置要使用的模型"""
if not self.is_service_running:
print(f"{Fore.RED}错误:Ollama服务未运行,无法切换模型{Style.RESET_ALL}")
return
self.model = model_name
print(f"{Fore.GREEN}已切换Ollama模型为: {model_name}{Style.RESET_ALL}")
def list_models(self):
"""列出本地可用的模型"""
if not self.is_service_running:
return ["错误:Ollama服务未运行"]
try:
response = ollama_client.list()
models = [model["name"] for model in response["models"]]
return models
except Exception as e:
return [f"获取模型列表失败: {str(e)}"]
def list_remote_models(self, limit=10):
"""获取可下载的模型列表(仅展示前N个)"""
if not self.is_service_running:
return ["错误:Ollama服务未运行"]
try:
# 使用Ollama Python库获取可下载的模型列表
# 注意:Ollama库本身没有直接获取可下载模型列表的API
# 这里返回一些常见的模型作为示例
# 实际应用中可能需要从Ollama官网或其他来源获取此信息
common_models = [
"llama3.1:latest",
"llama3:latest",
"mistral:latest",
"gemma2:latest",
"phi3:latest",
"qwen2:latest",
"command-r:latest",
"dolphin-mistral:latest",
"nous-hermes2:latest",
"llava:latest",
"codellama:latest",
"mxbai-embed-large:latest",
"all-minilm:latest",
"stable-diffusion:latest",
"moondream:latest"
]
return common_models[:limit]
except Exception as e:
return [f"获取远程模型列表失败: {str(e)}"]
def search_models(self, query, limit=10):
"""模糊搜索可下载的模型"""
if not self.is_service_running:
return ["错误:Ollama服务未运行"]
try:
# 使用Ollama Python库获取可下载的模型列表
# 注意:Ollama库本身没有直接获取可下载模型列表的API
all_models = [
"llama3.1:latest", "llama3:latest", "llama2:latest",
"mistral:latest", "mistral-openorca:latest",
"gemma2:latest", "gemma:latest",
"phi3:latest", "phi2:latest",
"qwen2:latest", "qwen:latest",
"command-r:latest", "command-r-plus:latest",
"dolphin-mistral:latest", "dolphin-llama3:latest",
"nous-hermes2:latest", "nous-hermes:latest",
"llava:latest", "bakllava:latest",
"codellama:latest", "codeup:latest",
"mxbai-embed-large:latest", "nomic-embed-text:latest",
"all-minilm:latest", "bge-m3:latest",
"stable-diffusion:latest", "moondream:latest",
"llama3-groq:latest", "eva-qwen2:latest"
]
# 进行模糊搜索(简单匹配,包含查询词的模型)
matched_models = [model for model in all_models if query.lower() in model.lower()]
# 限制返回数量
return matched_models[:limit]
except Exception as e:
return [f"搜索模型失败: {str(e)}"]
def pull_model(self, model_name):
"""从Ollama库拉取模型"""
if not self.is_service_running:
print(f"{Fore.RED}错误:Ollama服务未运行,无法拉取模型{Style.RESET_ALL}")
return False
try:
print(f"{Fore.YELLOW}正在拉取模型 {model_name}...{Style.RESET_ALL}")
# 使用Ollama Python库拉取模型
response = ollama_client.pull(model_name, stream=True)
# 逐块处理响应
for part in response:
if 'status' in part:
status = part['status']
print(f"{Fore.YELLOW}{status}{Style.RESET_ALL}")
# 检查是否完成
if 'completed' in part and 'total' in part:
if part['completed'] == part['total']:
print(f"{Fore.GREEN}模型 {model_name} 拉取完成!{Style.RESET_ALL}")
print(f"{Fore.GREEN}模型 {model_name} 拉取成功!{Style.RESET_ALL}")
return True
except Exception as e:
print(f"{Fore.RED}拉取模型 {model_name} 失败: {str(e)}{Style.RESET_ALL}")
return False
def handle_command(self, command):
"""处理引擎特定命令"""
if not self.is_service_running:
print(f"{Fore.RED}Ollama服务未运行,无法执行命令{Style.RESET_ALL}")
return False
if command == "models":
# 显示本地可用模型
models = self.list_models()
print(f"{Fore.GREEN}本地可用的Ollama模型:{Style.RESET_ALL}")
for model in models:
status = " (当前使用)" if model == self.model else ""
print(f"{Fore.GREEN} - {model}{status}{Style.RESET_ALL}")
return True
elif command == "remote-models":
# 显示可下载的模型(前10个)
models = self.list_remote_models()
print(f"{Fore.GREEN}可下载的Ollama模型(前10个):{Style.RESET_ALL}")
for i, model in enumerate(models, 1):
print(f"{Fore.GREEN} {i}. {model}{Style.RESET_ALL}")
return True
elif command.startswith("search "):
# 搜索模型
query = command[7:].strip() # 移除 'search '
if query:
models = self.search_models(query)
if models:
print(f"{Fore.GREEN}搜索 '{query}' 的结果(前10个):{Style.RESET_ALL}")
for i, model in enumerate(models, 1):
print(f"{Fore.GREEN} {i}. {model}{Style.RESET_ALL}")
else:
print(f"{Fore.YELLOW}未找到与 '{query}' 匹配的模型{Style.RESET_ALL}")
return True
else:
print(f"{Fore.RED}请提供搜索关键词.用法: /engine.search <关键词>{Style.RESET_ALL}")
return False
elif command.startswith("set "):
# 设置模型
model_name = command[4:].strip() # 移除 'set '
if model_name:
self.set_model(model_name)
return True
else:
print(f"{Fore.RED}请提供模型名称.用法: /engine.set <模型名>{Style.RESET_ALL}")
return False
elif command.startswith("pull "):
# 拉取模型
model_name = command[5:].strip() # 移除 'pull '
if model_name:
success = self.pull_model(model_name)
return success
else:
print(f"{Fore.RED}请提供模型名称.用法: /engine.pull <模型名>{Style.RESET_ALL}")
return False
else:
print(f"{Fore.RED}未知的Ollama命令.可用命令: models, remote-models, search, set, pull{Style.RESET_ALL}")
return False