subscriber
This commit is contained in:
114
src/OpcUaSubscriber.py
Normal file
114
src/OpcUaSubscriber.py
Normal file
@ -0,0 +1,114 @@
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import asyncio
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from sqlite3 import NotSupportedError
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from asyncua import Client, ua
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import threading
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from loguru import logger
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from FlatDataObject import FlatDataObject
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from StructuredDataObject import StructuredDataObject
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class FlatSubscriptionHandler:
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def __init__(self, serverName, nodes, queue):
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self.serverName = serverName
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self.nodes = nodes
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self.queue = queue
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self.count = 0
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def getAndResetCount(self):
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tmp = self.count
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self.count = 0
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return tmp
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def datachange_notification(self, node, val, data):
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logger.info(f"received: {node=}, {val=}, {data=}")
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self.count += 1
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match node.nodeid.NodeIdType:
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case ua.NodeIdType.Numeric:
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prefix = 'i'
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case ua.NodeIdType.String:
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prefix = 's'
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case _:
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prefix = 'x'
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nodeName = f"{prefix}={node.nodeid.Identifier}"
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namespaceIndex = node.nodeid.NamespaceIndex
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displayNames = [ x['d'] for x in self.nodes if x['ns'] == namespaceIndex and x['n'] == nodeName ]
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name = displayNames[0] if displayNames else nodeName
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self.queue.put(FlatDataObject(self.serverName, str(namespaceIndex), name, data.monitored_item.Value))
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class _RenewTriggerException(Exception): pass
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class OpcUaSubscriber(threading.Thread):
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def __init__(self, config, stats, queue):
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super().__init__()
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self.config = config
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self.queue = queue
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self.stats = stats
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self.name = self.config['name']
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self.url = self.config['url']
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self.nodes = self.config['nodes']
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self.period = self.config['period']
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self.timeout = self.config['timeout']
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self.dataObjectType = self.config['type']
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self.flat = self.dataObjectType == 'flat'
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if not self.flat:
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raise NotImplementedError("Only flat approach supported in OpcUaSubscriber")
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# consider this flag in the localLoop
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self.killBill = False
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self.killEvent = asyncio.Event()
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async def opcUaSubscriberInnerLoop(self):
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while not self.killBill:
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try:
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async with Client(url=self.url, timeout=self.timeout) as client:
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subscriptionHandler = FlatSubscriptionHandler(self.name, self.nodes, self.queue)
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subscription = await client.create_subscription(self.period * 1000, subscriptionHandler)
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nodes = [ client.get_node(f"ns={n['ns']};{n['n']}") for n in self.nodes ]
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await subscription.subscribe_data_change(nodes)
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logger.info("Subscriptions created, nodes subscribed")
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while True:
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try:
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await asyncio.wait_for(self.killEvent.wait(), self.period * 10)
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logger.info("About to terminate opcUaSubscriber")
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break
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except asyncio.TimeoutError:
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cnt = subscriptionHandler.getAndResetCount()
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logger.info(f"receive count: {cnt}")
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if cnt == 0:
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raise _RenewTriggerException()
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await subscription.delete()
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logger.info("Subscriptions deleted, wait a moment")
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await asyncio.sleep(1)
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logger.info("opcUaSubscriber terminated")
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except _RenewTriggerException:
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logger.error(f"too few data received, renew connection")
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# continues in the loop
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except asyncio.exceptions.TimeoutError as e:
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self.stats.incOpcUaTimeouts()
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logger.error(f"Timeout in inner OPC-UA loop")
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except asyncio.exceptions.CancelledError as e:
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self.stats.incOpcUaErrors()
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logger.error(f"Cancelled in inner OPC-UA loop")
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except Exception as e:
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self.stats.incOpcUaErrors()
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logger.error(f"Exception in inner OPC-UA loop: {type(e)} {e}")
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def run(self):
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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loop.run_until_complete(self.opcUaSubscriberInnerLoop())
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loop.close()
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def stop(self):
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self.killBill = True
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logger.info("kill flag set")
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self.killEvent.set()
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logger.info("kill events triggered")
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@ -1,5 +1,4 @@
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from MqttPublish import MqttPublish
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from OpcUaRequester import OpcUaRequester
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from Statistics import StatisticsCollector
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from loguru import logger
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@ -40,24 +39,43 @@ with open(args.config) as f:
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config = json.load(f)
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match config['opcua']['type']:
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case 'requester':
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logger.info("Loading OpcUaRequester")
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from OpcUaRequester import OpcUaRequester as OpcUa
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case 'subscriber':
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logger.info("Loading OpcUaSubscriber")
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from OpcUaSubscriber import OpcUaSubscriber as OpcUa
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case _:
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raise Exception("unknown OpcUa type")
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queue = queue.Queue()
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statsThread = StatisticsCollector(config, queue)
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statsThread.start()
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logger.info("StatisticsCollector started")
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threads = []
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try:
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statsThread = StatisticsCollector(config, queue)
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statsThread.start()
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threads.append(statsThread)
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logger.info("StatisticsCollector started")
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publishThread = MqttPublish(config, statsThread, queue)
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publishThread.start()
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logger.info("MqttPublish started")
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publishThread = MqttPublish(config, statsThread, queue)
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publishThread.start()
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threads.append(publishThread)
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logger.info("MqttPublish started")
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opcuaThreads = []
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for o in config['opcua']:
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if o['enabled'] != 'true':
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continue
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ot = OpcUaRequester(o, statsThread, queue)
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ot.start()
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logger.info(f"OpcUaRequester thread for {o['name']} started")
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opcuaThreads.append(ot)
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opcuaThreads = []
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for o in config['opcua']["servers"]:
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if o['enabled'] != 'true':
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continue
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ot = OpcUa(o, statsThread, queue)
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ot.start()
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logger.info(f"OpcUaRequester thread for {o['name']} started")
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threads.append(ot)
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except Exception as e:
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logger.error(f"caught exception {type(e)}, {e} during start-up phase")
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deathBell.set()
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threading.excepthook = exceptHook
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logger.info("Threading excepthook set")
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@ -71,24 +89,12 @@ logger.info("opcua2mqtt bridge is running")
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deathBell.wait()
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logger.error("opcua2mqtt bridge is dying")
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publishThread.stop()
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logger.error("publishThread stopped")
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for t in threads:
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t.stop()
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logger.error(f"thread {t.name} stopped")
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statsThread.stop()
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logger.error("statsThread stopped")
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for ot in opcuaThreads:
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ot.stop()
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logger.error(f"opcua thread {ot.name} stopped")
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publishThread.join()
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logger.error("publishThread joined")
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statsThread.join()
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logger.error("statsThread joined")
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for ot in opcuaThreads:
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ot.join()
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logger.error(f"opcua thread {ot.name} joined")
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for t in threads:
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t.join()
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logger.error(f"thread {t.name} joined")
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logger.error("opcua2mqtt bridge is terminated")
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115
src/config.json
115
src/config.json
@ -8,62 +8,65 @@
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"topic": "statistics",
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"period": 60
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},
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"opcua": [
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{
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"enabled": "true",
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"type": "structured",
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"url": "opc.tcp://172.16.3.60:4840",
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"name": "apl",
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"period": 1.0,
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"timeout": 1.0,
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"nodes": [
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{ "ns": 0, "n": "i=345", "d": "pv" },
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{ "ns": 0, "n": "i=348", "d": "sv" },
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{ "ns": 0, "n": "i=351", "d": "tv" },
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{ "ns": 0, "n": "i=354", "d": "qv" }
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]
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},
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{
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"enabled": "false",
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"type": "flat",
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"url": "opc.tcp://192.168.254.5:4863",
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"name": "sh",
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"period": 1.0,
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"timeout": 10.0,
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"nodes": [
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{ "ns": 1, "n": "s=t|SERVER::A201CD124/MOT_01.AV_Out#Value", "d": "A201CD124" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ003/PID_01.PV_Out#Value", "d": "A201CJ003" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ004/PID_01.PV_Out#Value", "d": "A201CJ004" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ011/PID_01.PV_Out#Value", "d": "A201CJ011" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ014/PID_01.PV_Out#Value", "d": "A201CJ014" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ021/MMON_01.PV_Out#Value", "d": "A201CJ021" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ022/MMON_01.PV_Out#Value", "d": "A201CJ022" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ023/MMON_01.PV_Out#Value", "d": "A201CJ023" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ024/PID_01.PV_Out#Value", "d": "A201CJ024" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ025/PID_01.PV_Out#Value", "d": "A201CJ025" },
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{ "ns": 1, "n": "s=t|SERVER::A201CD123/MOT_01.AV_Out#Value", "d": "A201CD123" },
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{ "ns": 1, "n": "s=t|SERVER::A201CD121/MOT_01.AV_Out#Value", "d": "A201CD121" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD110/MOT_01.AV_Out#Value", "d": "A212DD110" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD130/MOT_01.AV_Out#Value", "d": "A212DD130" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD131/MOT_01.AV_Out#Value", "d": "A212DD131" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD111/MOT_01.AV_Out#Value", "d": "A212DD111" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD113/MOT_01.AV_Out#Value", "d": "A212DD113" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ004/PID_01.PV_Out#Value", "d": "A212DJ004" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ021/PID_01.PV_Out#Value", "d": "A212DJ021" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ001/PID_01.PV_Out#Value", "d": "A212DJ001" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ011/PID_01.PV_Out#Value", "d": "A212DJ011" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ032/MMON_01.PV_Out#Value", "d": "A212DJ032" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ031/MMON_01.PV_Out#Value", "d": "A212DJ031" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ033/MMON_01.PV_Out#Value", "d": "A212DJ033" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ010/MMON_01.PV_Out#Value", "d": "A212DJ010" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ042/MMON_01.PV_Out#Value", "d": "A212DJ042" },
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{ "ns": 1, "n": "s=t|SERVER::A214BJ055/PID_01.PV_Out#Value", "d": "A214BJ055" },
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{ "ns": 1, "n": "s=t|SERVER::A214BJ065/PID_01.PV_Out#Value", "d": "A214BJ065" },
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{ "ns": 1, "n": "s=t|SERVER::A212BJ010/MMON_01.PV_Out#Value", "d": "A212BJ010" },
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{ "ns": 1, "n": "s=t|SERVER::A212BJ010/MMON_02.PV_Out#Value", "d": "A212BJ010" }
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]
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}
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]
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"opcua": {
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"type": "subscriber",
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"servers": [
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{
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"enabled": "true",
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"type": "flat",
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"url": "opc.tcp://172.16.3.60:4840",
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"name": "apl",
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"period": 1.0,
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"timeout": 1.0,
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"nodes": [
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{ "ns": 0, "n": "i=345", "d": "pv" },
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{ "ns": 0, "n": "i=348", "d": "sv" },
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{ "ns": 0, "n": "i=351", "d": "tv" },
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{ "ns": 0, "n": "i=354", "d": "qv" }
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]
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},
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{
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"enabled": "false",
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"type": "flat",
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"url": "opc.tcp://192.168.254.5:4863",
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"name": "sh",
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"period": 1.0,
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"timeout": 10.0,
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"nodes": [
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{ "ns": 1, "n": "s=t|SERVER::A201CD124/MOT_01.AV_Out#Value", "d": "A201CD124" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ003/PID_01.PV_Out#Value", "d": "A201CJ003" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ004/PID_01.PV_Out#Value", "d": "A201CJ004" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ011/PID_01.PV_Out#Value", "d": "A201CJ011" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ014/PID_01.PV_Out#Value", "d": "A201CJ014" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ021/MMON_01.PV_Out#Value", "d": "A201CJ021" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ022/MMON_01.PV_Out#Value", "d": "A201CJ022" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ023/MMON_01.PV_Out#Value", "d": "A201CJ023" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ024/PID_01.PV_Out#Value", "d": "A201CJ024" },
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{ "ns": 1, "n": "s=t|SERVER::A201CJ025/PID_01.PV_Out#Value", "d": "A201CJ025" },
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{ "ns": 1, "n": "s=t|SERVER::A201CD123/MOT_01.AV_Out#Value", "d": "A201CD123" },
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{ "ns": 1, "n": "s=t|SERVER::A201CD121/MOT_01.AV_Out#Value", "d": "A201CD121" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD110/MOT_01.AV_Out#Value", "d": "A212DD110" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD130/MOT_01.AV_Out#Value", "d": "A212DD130" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD131/MOT_01.AV_Out#Value", "d": "A212DD131" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD111/MOT_01.AV_Out#Value", "d": "A212DD111" },
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{ "ns": 1, "n": "s=t|SERVER::A212DD113/MOT_01.AV_Out#Value", "d": "A212DD113" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ004/PID_01.PV_Out#Value", "d": "A212DJ004" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ021/PID_01.PV_Out#Value", "d": "A212DJ021" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ001/PID_01.PV_Out#Value", "d": "A212DJ001" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ011/PID_01.PV_Out#Value", "d": "A212DJ011" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ032/MMON_01.PV_Out#Value", "d": "A212DJ032" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ031/MMON_01.PV_Out#Value", "d": "A212DJ031" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ033/MMON_01.PV_Out#Value", "d": "A212DJ033" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ010/MMON_01.PV_Out#Value", "d": "A212DJ010" },
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{ "ns": 1, "n": "s=t|SERVER::A212DJ042/MMON_01.PV_Out#Value", "d": "A212DJ042" },
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{ "ns": 1, "n": "s=t|SERVER::A214BJ055/PID_01.PV_Out#Value", "d": "A214BJ055" },
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{ "ns": 1, "n": "s=t|SERVER::A214BJ065/PID_01.PV_Out#Value", "d": "A214BJ065" },
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{ "ns": 1, "n": "s=t|SERVER::A212BJ010/MMON_01.PV_Out#Value", "d": "A212BJ010" },
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{ "ns": 1, "n": "s=t|SERVER::A212BJ010/MMON_02.PV_Out#Value", "d": "A212BJ010" }
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]
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}
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]
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}
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}
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