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Copy pathserver-callback.py
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89 lines (66 loc) · 2.79 KB
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import sys
sys.path.insert(0, "..")
import logging
from datetime import datetime
try:
from IPython import embed
except ImportError:
import code
def embed():
vars = globals()
vars.update(locals())
shell = code.InteractiveConsole(vars)
shell.interact()
from opcua import ua, uamethod, Server
from opcua.common.callback import CallbackType
def create_monitored_items(event, dispatcher):
print("Monitored Item")
for idx in range(len(event.response_params)) :
if (event.response_params[idx].StatusCode.is_good()) :
nodeId = event.request_params.ItemsToCreate[idx].ItemToMonitor.NodeId
print("Node {0} was created".format(nodeId))
def modify_monitored_items(event, dispatcher):
print('modify_monitored_items')
def delete_monitored_items(event, dispatcher):
print('delete_monitored_items')
if __name__ == "__main__":
# optional: setup logging
logging.basicConfig(level=logging.WARN)
#logger = logging.getLogger("opcua.address_space")
# logger.setLevel(logging.DEBUG)
#logger = logging.getLogger("opcua.internal_server")
# logger.setLevel(logging.DEBUG)
#logger = logging.getLogger("opcua.binary_server_asyncio")
# logger.setLevel(logging.DEBUG)
#logger = logging.getLogger("opcua.uaprocessor")
# logger.setLevel(logging.DEBUG)
logger = logging.getLogger("opcua.subscription_service")
logger.setLevel(logging.DEBUG)
# now setup our server
server = Server()
#server.disable_clock()
#server.set_endpoint("opc.tcp://localhost:4840/freeopcua/server/")
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
server.set_server_name("FreeOpcUa Example Server")
# setup our own namespace
uri = "http://examples.freeopcua.github.io"
idx = server.register_namespace(uri)
# get Objects node, this is where we should put our custom stuff
objects = server.get_objects_node()
# populating our address space
myfolder = objects.add_folder(idx, "myEmptyFolder")
myobj = objects.add_object(idx, "MyObject")
myvar = myobj.add_variable(idx, "MyVariable", 6.7)
myvar.set_writable() # Set MyVariable to be writable by clients
# starting!
server.start()
# Create Callback for item event
server.subscribe_server_callback(CallbackType.ItemSubscriptionCreated, create_monitored_items)
server.subscribe_server_callback(CallbackType.ItemSubscriptionModified, modify_monitored_items)
server.subscribe_server_callback(CallbackType.ItemSubscriptionDeleted, delete_monitored_items)
print("Available loggers are: ", logging.Logger.manager.loggerDict.keys())
try:
# enable following if you want to subscribe to nodes on server side
embed()
finally:
server.stop()