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import sys |
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sys.path.insert(0, "..") |
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import logging |
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from datetime import datetime |
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import asyncio |
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7
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try: |
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from IPython import embed |
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except ImportError: |
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import code |
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def embed(): |
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vars = globals() |
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vars.update(locals()) |
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shell = code.InteractiveConsole(vars) |
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shell.interact() |
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from asyncua import ua, uamethod, Server |
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from asyncua.common.callback import CallbackType |
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def create_monitored_items(event, dispatcher): |
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print("Monitored Item") |
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for idx in range(len(event.response_params)) : |
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if (event.response_params[idx].StatusCode.is_good()) : |
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nodeId = event.request_params.ItemsToCreate[idx].ItemToMonitor.NodeId |
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print(f"Node {nodeId} was created") |
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def modify_monitored_items(event, dispatcher): |
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print('modify_monitored_items') |
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def delete_monitored_items(event, dispatcher): |
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print('delete_monitored_items') |
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41
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async def main(): |
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# optional: setup logging |
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logging.basicConfig(level=logging.WARN) |
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#logger = logging.getLogger("asyncua.address_space") |
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# logger.setLevel(logging.DEBUG) |
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#logger = logging.getLogger("asyncua.internal_server") |
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# logger.setLevel(logging.DEBUG) |
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#logger = logging.getLogger("asyncua.binary_server_asyncio") |
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# logger.setLevel(logging.DEBUG) |
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#logger = logging.getLogger("asyncua.uaprocessor") |
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# logger.setLevel(logging.DEBUG) |
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logger = logging.getLogger("asyncua.subscription_service") |
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logger.setLevel(logging.DEBUG) |
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55
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# now setup our server |
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server = Server() |
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await server.init() |
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#await server.disable_clock() |
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#server.set_endpoint("opc.tcp://localhost:4840/freeopcua/server/") |
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server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/") |
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server.set_server_name("FreeOpcUa Example Server") |
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63
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# setup our own namespace |
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uri = "http://examples.freeopcua.github.io" |
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idx = await server.register_namespace(uri) |
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# get Objects node, this is where we should put our custom stuff |
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objects = server.nodes.objects |
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# populating our address space |
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myfolder = await objects.add_folder(idx, "myEmptyFolder") |
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myobj = await objects.add_object(idx, "MyObject") |
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myvar = await myobj.add_variable(idx, "MyVariable", 6.7) |
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await myvar.set_writable() # Set MyVariable to be writable by clients |
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# starting! |
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await server.start() |
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80
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# Create Callback for item event |
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server.subscribe_server_callback(CallbackType.ItemSubscriptionCreated, create_monitored_items) |
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server.subscribe_server_callback(CallbackType.ItemSubscriptionModified, modify_monitored_items) |
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server.subscribe_server_callback(CallbackType.ItemSubscriptionDeleted, delete_monitored_items) |
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85
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while True: |
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await asyncio.sleep(1) |
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88
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89
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if __name__ == '__main__': |
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asyncio.run(main()) |
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FreeOpcUa /
opcua-asyncio
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