301 lines
12 KiB
Python
301 lines
12 KiB
Python
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"""
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Protocol Clients for Dashboard
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Provides client utilities to query OPC UA and Modbus servers for real-time data.
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"""
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import asyncio
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import structlog
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from typing import Dict, Any, Optional, List
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from datetime import datetime
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logger = structlog.get_logger()
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class OPCUAClient:
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"""OPC UA Client for querying pump data from OPC UA server."""
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def __init__(self, endpoint: str = "opc.tcp://localhost:4840"):
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self.endpoint = endpoint
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self._client = None
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async def connect(self):
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"""Connect to OPC UA server."""
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try:
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from asyncua import Client
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self._client = Client(url=self.endpoint)
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await self._client.connect()
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logger.info("opcua_client_connected", endpoint=self.endpoint)
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return True
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except Exception as e:
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logger.error("failed_to_connect_opcua", endpoint=self.endpoint, error=str(e))
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return False
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async def disconnect(self):
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"""Disconnect from OPC UA server."""
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if self._client:
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await self._client.disconnect()
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self._client = None
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logger.info("opcua_client_disconnected")
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async def read_node_value(self, node_id: str) -> Optional[Any]:
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"""Read value from OPC UA node."""
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try:
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if not self._client:
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await self.connect()
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node = self._client.get_node(node_id)
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value = await node.read_value()
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return value
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except Exception as e:
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logger.error("failed_to_read_opcua_node", node_id=node_id, error=str(e))
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return None
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async def get_pump_data(self, station_id: str, pump_id: str) -> Dict[str, Any]:
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"""Get all data for a specific pump."""
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try:
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if not self._client:
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await self.connect()
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# Define node IDs for this pump
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nodes = {
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"setpoint": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.Setpoint_Hz",
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"actual_speed": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.ActualSpeed_Hz",
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"power": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.Power_kW",
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"flow_rate": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.FlowRate_m3h",
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"safety_status": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.SafetyStatus",
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"timestamp": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.Timestamp"
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}
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data = {}
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for key, node_id in nodes.items():
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value = await self.read_node_value(node_id)
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data[key] = value
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return data
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except Exception as e:
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logger.error("failed_to_get_pump_data", station_id=station_id, pump_id=pump_id, error=str(e))
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return {}
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class ModbusClient:
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"""Modbus Client for querying register data from Modbus server."""
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def __init__(self, host: str = "localhost", port: int = 502, unit_id: int = 1):
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self.host = host
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self.port = port
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self.unit_id = unit_id
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self._client = None
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def connect(self) -> bool:
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"""Connect to Modbus server."""
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try:
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from pymodbus.client import ModbusTcpClient
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self._client = ModbusTcpClient(self.host, port=self.port)
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if self._client.connect():
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logger.info("modbus_client_connected", host=self.host, port=self.port)
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return True
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else:
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logger.error("failed_to_connect_modbus", host=self.host, port=self.port)
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return False
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except Exception as e:
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logger.error("failed_to_connect_modbus", host=self.host, port=self.port, error=str(e))
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return False
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def disconnect(self):
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"""Disconnect from Modbus server."""
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if self._client:
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self._client.close()
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self._client = None
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logger.info("modbus_client_disconnected")
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def read_holding_register(self, address: int, count: int = 1) -> Optional[List[int]]:
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"""Read holding register(s)."""
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try:
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if not self._client or not self._client.is_socket_open():
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self.connect()
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result = self._client.read_holding_registers(address, count)
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if not result.isError():
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return result.registers
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else:
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logger.error("failed_to_read_holding_register", address=address, error=str(result))
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return None
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except Exception as e:
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logger.error("failed_to_read_holding_register", address=address, error=str(e))
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return None
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def read_input_register(self, address: int, count: int = 1) -> Optional[List[int]]:
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"""Read input register(s)."""
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try:
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if not self._client or not self._client.is_socket_open():
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self.connect()
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result = self._client.read_input_registers(address, count)
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if not result.isError():
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return result.registers
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else:
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logger.error("failed_to_read_input_register", address=address, error=str(result))
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return None
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except Exception as e:
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logger.error("failed_to_read_input_register", address=address, error=str(e))
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return None
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def get_pump_registers(self, pump_num: int) -> Dict[str, Any]:
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"""Get all register data for a specific pump."""
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try:
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# Calculate base register for this pump
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base_register = 40000 + (pump_num * 10)
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# Read holding registers (setpoints)
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setpoint = self.read_holding_register(base_register + 1, 1)
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# Read input registers (status values)
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actual_speed = self.read_input_register(base_register + 2, 1)
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power = self.read_input_register(base_register + 3, 1)
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temperature = self.read_input_register(base_register + 4, 1)
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return {
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"setpoint": setpoint[0] if setpoint else None,
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"actual_speed": actual_speed[0] if actual_speed else None,
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"power": power[0] if power else None,
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"temperature": temperature[0] if temperature else None
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}
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except Exception as e:
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logger.error("failed_to_get_pump_registers", pump_num=pump_num, error=str(e))
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return {}
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class ProtocolDataCollector:
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"""Main class for collecting data from all protocol servers."""
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def __init__(self):
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self.opcua_client = OPCUAClient()
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self.modbus_client = ModbusClient()
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async def get_signal_data(self, station_id: str, pump_id: str) -> List[Dict[str, Any]]:
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"""Get signal data for a specific pump from all protocols."""
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signals = []
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# Extract pump number from pump_id (e.g., "PUMP_001" -> 1)
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try:
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pump_num = int(pump_id.split('_')[1])
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except (IndexError, ValueError):
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pump_num = 1
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# Get OPC UA data
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opcua_data = await self.opcua_client.get_pump_data(station_id, pump_id)
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# Get Modbus data
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modbus_data = self.modbus_client.get_pump_registers(pump_num)
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# Create OPC UA signals
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if opcua_data:
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# Handle None values gracefully
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setpoint = opcua_data.get('setpoint', 0.0) or 0.0
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actual_speed = opcua_data.get('actual_speed', 0.0) or 0.0
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power = opcua_data.get('power', 0.0) or 0.0
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flow_rate = opcua_data.get('flow_rate', 0.0) or 0.0
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safety_status = opcua_data.get('safety_status', 'normal') or 'normal'
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signals.extend([
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_Setpoint",
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"protocol": "opcua",
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"address": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.Setpoint_Hz",
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"data_type": "Float",
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"current_value": f"{setpoint:.1f} Hz",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_ActualSpeed",
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"protocol": "opcua",
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"address": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.ActualSpeed_Hz",
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"data_type": "Float",
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"current_value": f"{actual_speed:.1f} Hz",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_Power",
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"protocol": "opcua",
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"address": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.Power_kW",
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"data_type": "Float",
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"current_value": f"{power:.1f} kW",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_FlowRate",
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"protocol": "opcua",
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"address": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.FlowRate_m3h",
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"data_type": "Float",
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"current_value": f"{flow_rate:.1f} m³/h",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_SafetyStatus",
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"protocol": "opcua",
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"address": f"ns=2;s=Station_{station_id}.Pump_{pump_id}.SafetyStatus",
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"data_type": "String",
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"current_value": safety_status,
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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}
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])
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# Create Modbus signals
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if modbus_data:
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# Handle None values gracefully
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setpoint = modbus_data.get('setpoint', 0) or 0
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actual_speed = modbus_data.get('actual_speed', 0) or 0
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power = modbus_data.get('power', 0) or 0
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temperature = modbus_data.get('temperature', 0) or 0
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signals.extend([
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_Setpoint",
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"protocol": "modbus",
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"address": f"{40000 + (pump_num * 10) + 1}",
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"data_type": "Integer",
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"current_value": f"{setpoint} Hz (x10)",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_ActualSpeed",
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"protocol": "modbus",
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"address": f"{40000 + (pump_num * 10) + 2}",
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"data_type": "Integer",
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"current_value": f"{actual_speed} Hz (x10)",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_Power",
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"protocol": "modbus",
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"address": f"{40000 + (pump_num * 10) + 3}",
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"data_type": "Integer",
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"current_value": f"{power} kW (x10)",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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},
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{
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"name": f"Station_{station_id}_Pump_{pump_id}_Temperature",
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"protocol": "modbus",
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"address": f"{40000 + (pump_num * 10) + 4}",
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"data_type": "Integer",
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"current_value": f"{temperature} °C",
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"quality": "Good",
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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}
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])
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return signals
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async def cleanup(self):
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"""Clean up connections."""
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await self.opcua_client.disconnect()
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self.modbus_client.disconnect()
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