123 lines
4.4 KiB
Python
123 lines
4.4 KiB
Python
# memory_server.py
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import json
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import os
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import sys
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import asyncio
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from datetime import datetime
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from pathlib import Path
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from typing import Any, Optional, Dict, List
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from fastmcp import FastMCP, Client
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from fnmatch import fnmatch
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# ---------------------------------------------------------------------------
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# Server implementation
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# ---------------------------------------------------------------------------
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class MemoryServer:
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def __init__(self):
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self.mcp = FastMCP("Memory-Server")
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self.storage_path = Path("./memory_data.json")
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def _load_memory(self) -> Dict[str, Dict[str, Any]]:
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if not self.storage_path.exists():
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return {}
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with open(self.storage_path, "r", encoding="utf-8") as f:
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return json.load(f)
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def _save_memory(self, data: Dict[str, Dict[str, Any]]):
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self.storage_path.parent.mkdir(parents=True, exist_ok=True)
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with open(self.storage_path, "w", encoding="utf-8") as f:
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json.dump(data, f, indent=2, ensure_ascii=False)
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def _sanitize_key(self, key: str) -> str:
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if "../" in key or key.startswith("/"):
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raise ValueError("Invalid key: contains path traversal")
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return key
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@property
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def _mcp(self):
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return self.mcp
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# Basic tools
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@self.mcp.tool()
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def save(self, key: str, value: Any) -> bool:
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"""Сохраняет значение по ключу в память сервера."""
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key = self._sanitize_key(key)
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data = self._load_memory()
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data[key] = {"value": value, "timestamp": datetime.utcnow().isoformat()}
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self._save_memory(data)
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return True
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@self.mcp.tool()
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def get(self, key: str) -> Optional[Dict[str, Any]]:
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"""Возвращает значение по ключу с метаданными."""
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key = self._sanitize_key(key)
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data = self._load_memory()
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if key in data:
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return {"key": key, **data[key]}
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return None
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@self.mcp.tool()
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def delete(self, key: str) -> bool:
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"""Удаляет ключ из памяти сервера."""
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key = self._sanitize_key(key)
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data = self._load_memory()
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if key in data:
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del data[key]
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self._save_memory(data)
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return True
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return False
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@self.mcp.tool()
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def list_keys(self, pattern: str = "*") -> List[str]:
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"""Возвращает список всех ключей с поддержкой wildcard-паттерна."""
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data = self._load_memory()
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return [k for k in data.keys() if fnmatch(k, pattern)]
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# Namespace tools
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@self.mcp.tool()
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def save_with_namespace(self, key: str, value: Any, namespace: str = "default") -> bool:
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full_key = f"{namespace}:{key}"
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return self.save(full_key, value)
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@self.mcp.tool()
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def get_by_namespace(self, namespace: str = "default") -> List[Dict[str, Any]]:
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prefix = f"{namespace}:"
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data = self._load_memory()
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result = []
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for k, v in data.items():
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if k.startswith(prefix):
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result.append({"key": k, **v})
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return result
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# ---------------------------------------------------------------------------
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# Client for testing
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# ---------------------------------------------------------------------------
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async def test_client():
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client = Client("python memory_server.py")
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await client.connect()
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try:
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# Сохранение
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res = await client.call_tool("save_with_namespace", {"key": "username", "value": "Алексей", "namespace": "default"})
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print("Сохранено:", res)
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# Чтение
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res = await client.call_tool("get_by_namespace", {"namespace": "default"})
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print("Данные namespace 'default':")
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for item in res:
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print(f" {item['key']}: {item['value']}")
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# Поиск по паттерну
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keys = await client.call_tool("list_keys", {"pattern": "*name"})
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print("Ключи с 'name':", keys)
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finally:
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await client.close()
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# ---------------------------------------------------------------------------
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# Entry points
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# ---------------------------------------------------------------------------
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if __name__ == "__main__":
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if len(sys.argv) > 1 and sys.argv[1] == "test":
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asyncio.run(test_client())
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else:
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server = MemoryServer()
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server.mcp.run(transport="stdio", show_banner=False, log_level="ERROR")
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