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"filePath": "\/var\/www\/mcp-servers\/mcp-db\/tools\/execute_tool.py",
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"originalFile": "\"\"\"Execute Tool - Führt DDL\/DML Statements aus.\"\"\"\nimport sys\nimport time\n\nsys.path.insert(0, \"\/var\/www\/mcp-servers\/mcp-db\")\nsys.path.insert(0, \"\/var\/www\/mcp-servers\/shared\")\n\nfrom constants import LOG_QUERY_MAX_LENGTH, MS_PER_SECOND\n\nfrom domain.execute_contract import ExecuteRequest, ExecuteResponse, ExecuteStatus\nfrom domain.log_contract import LogEntry\nfrom infrastructure.db_connection import DatabaseConnection\nfrom infrastructure.protokoll_logger import ProtokollLogger\nfrom validators.execute_validator import ExecuteValidator\n\n\nclass ExecuteExecutor:\n \"\"\"Führt validierte DDL\/DML Statements aus.\"\"\"\n\n @staticmethod\n def execute(request: ExecuteRequest) -> ExecuteResponse:\n \"\"\"Führt ein validiertes Statement aus.\"\"\"\n start = time.time()\n\n try:\n with DatabaseConnection.get_connection(request.database) as conn:\n cursor = conn.cursor(buffered=True)\n cursor.execute(request.statement, request.params)\n affected_rows = cursor.rowcount\n conn.commit()\n cursor.close()\n\n duration = int((time.time() - start) * MS_PER_SECOND)\n\n return ExecuteResponse(\n status=ExecuteStatus.SUCCESS,\n affected_rows=affected_rows,\n execution_ms=duration,\n )\n\n except Exception as e:\n duration = int((time.time() - start) * MS_PER_SECOND)\n\n return ExecuteResponse(\n status=ExecuteStatus.ERROR,\n error=str(e)[:200],\n execution_ms=duration,\n )\n\n\ndef register_execute_tool(mcp) -> None:\n \"\"\"Registriert db_execute Tool.\"\"\"\n logger = ProtokollLogger()\n\n @mcp.tool()\n def db_execute(\n statement: str,\n database: str = \"ki_dev\",\n params: list | None = None,\n ) -> dict:\n \"\"\"\n Führt DDL-Statements aus (ALTER, CREATE, DROP, TRUNCATE).\n\n Args:\n statement: SQL DDL Statement\n database: Zieldatenbank (ki_dev oder ki_content)\n params: Optional - Parameter für Prepared Statements\n\n Returns:\n Dict mit status, affected_rows, error, execution_ms\n \"\"\"\n params_tuple = tuple(params) if params else None\n\n # 1. Validierung\n valid, error = ExecuteValidator.validate_statement(statement, database)\n\n if not valid:\n try:\n logger.log(\n LogEntry(\n request=f\"EXECUTE: {statement[:150]}\",\n status=\"denied\",\n duration_ms=0,\n error_message=error,\n )\n )\n except Exception:\n pass\n\n return ExecuteResponse(status=ExecuteStatus.DENIED, error=error).to_dict()\n\n # 2. Request erstellen\n request = ExecuteRequest(\n statement=statement,\n database=database,\n params=params_tuple,\n )\n\n # 3. Ausführung\n response = ExecuteExecutor.execute(request)\n\n # 4. Logging\n try:\n logger.log(\n LogEntry(\n request=f\"EXECUTE: {statement[:150]}\",\n status=response.status.value,\n duration_ms=int(response.execution_ms),\n error_message=response.error,\n )\n )\n except Exception:\n pass\n\n return response.to_dict()\n",
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