51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
"""PostgreSQL MCP工具全局管理器"""
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from typing import Optional
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from ..utils.logger import get_logger
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logger = get_logger("postgresql_tool_manager")
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# Try to import PostgreSQL MCP tool
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try:
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from th_agenter.services.mcp.postgresql_mcp import PostgreSQLMCPTool
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POSTGRESQL_TOOL_AVAILABLE = True
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except ImportError as e:
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logger.warning(f"PostgreSQL MCP tool not available: {str(e)}. PostgreSQL functionality will be disabled.")
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PostgreSQLMCPTool = None
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POSTGRESQL_TOOL_AVAILABLE = False
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class PostgreSQLToolManager:
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"""PostgreSQL工具全局单例管理器"""
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_instance: Optional['PostgreSQLToolManager'] = None
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_postgresql_tool: Optional[PostgreSQLMCPTool] = None
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def __new__(cls):
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if cls._instance is None:
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cls._instance = super().__new__(cls)
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return cls._instance
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@property
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def postgresql_tool(self) -> Optional[PostgreSQLMCPTool]:
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"""获取PostgreSQL工具实例"""
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if not POSTGRESQL_TOOL_AVAILABLE:
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return None
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if self._postgresql_tool is None:
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self._postgresql_tool = PostgreSQLMCPTool()
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logger.info("创建全局PostgreSQL工具实例")
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return self._postgresql_tool
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def get_tool(self) -> Optional[PostgreSQLMCPTool]:
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"""获取PostgreSQL工具实例（别名方法）"""
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return self.postgresql_tool
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# 全局实例
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postgresql_tool_manager = PostgreSQLToolManager()
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def get_postgresql_tool() -> PostgreSQLMCPTool:
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"""获取全局PostgreSQL工具实例"""
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return postgresql_tool_manager.get_tool() |