def start():
mServer = Server()
mServer.set_endpoint(URL)
mServer.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256Sha256_Sign
])
address_space = mServer.register_namespace(NAMESPACE_NAME)
root_node = mServer.get_objects_node()
params = root_node.add_object(address_space, "Parameters")
start_time = params.add_variable(address_space, "start_time",
start_timestamp)
data = root_node.add_object(address_space, "data")
pump = data.add_object(address_space, "Pump")
temperature = 20 + random.randint(0, 10)
pump_temp_var = pump.add_variable(address_space, "temperature",
temperature)
pump_temp_vup = VarUpdater(
pump_temp_var) # just a dummy class update a variable
pump_temp_unit = pump.add_variable(address_space, "unit", "°C")
pump_status = pump.add_variable(address_space, "status", False)
pump_status.set_writable()
level = 12
pump_level = pump.add_variable(address_space, "level", level)
pump_level.set_writable()
sleep_period = 0.5
# Start the server
mServer.start()
print("Server started at {}".format(URL))
print("root_node: " + root_node.__str__())
print("params: " + params.__str__())
print("pump: " + pump.__str__())
# print(""+pump)
# enable following if you want to subscribe to nodes on server side
handler = SubHandler()
sub = mServer.create_subscription(500, handler)
handle = sub.subscribe_data_change(pump_level)
# IMPORTANT: This should be started after the mServer.start()
pump_temp_vup.start()
try:
while True:
time.sleep(sleep_period)
finally:
# close connection, remove subscriptions, etc
pump_temp_vup.stop() # should be stopped
mServer.stop()
sinGen = myobj.add_variable(idx, "SineGenerator", 0.0)
print("Led_R: ", ledR)
print("Led_G: ", ledG)
print("Led_B: ", ledB)
print("Switch_1: ", switch1)
print("Switch_2: ", switch2)
print("Rotary: ", rotaryVal)
print("Range: ", rangeVal)
print("Flame: ", flameVal)
print("SineGenerator: ", sinGen)
# starting!
server.start()
sub = server.create_subscription(50, SubHandler())
sub.subscribe_data_change(ledR)
sub.subscribe_data_change(ledG)
sub.subscribe_data_change(ledB)
try:
count = 0
while True:
sleep(0.1)
count += 0.1
sinGen.set_value(math.sin(count))
rangeVal.set_value(get_range_val())
finally:
server.stop()
myobj = objects.add_object(idx, "NewObject")
myvar = myobj.add_variable(idx, "MyVariable", 6.7)
myarrayvar = myobj.add_variable(idx, "myarrayvar", [6.7, 7.9])
myprop = myobj.add_property(idx, "myproperty", "I am a property")
mymethod = myobj.add_method(idx, "mymethod", func, [ua.VariantType.Int64],
[ua.VariantType.Boolean])
multiply_node = myobj.add_method(
idx, "multiply", multiply,
[ua.VariantType.Int64, ua.VariantType.Int64], [ua.VariantType.Int64])
# creating an event object
# The event object automatically will have members for all events properties
myevent = server.get_event_object(ObjectIds.BaseEventType)
myevent.Message.Text = "This is my event"
myevent.Severity = 300
# starting!
server.start()
print("Available loggers are: ", logging.Logger.manager.loggerDict.keys())
try:
handler = SubHandler()
# enable following if you want to subscribe to nodes on server side
sub = server.create_subscription(500, handler)
handle = sub.subscribe_data_change(myvar)
# trigger event, all subscribed clients wil receive it
myevent.trigger()
embed()
finally:
server.stop()
class StationUAServer:
def __init__(self, pick_by_light):
self._pbl = pick_by_light
self._setup_nodes()
self._generate_tags()
self.ua_server.start()
self._generate_subscriptions()
Thread(target=self._var_updater, daemon=True).start()
def _setup_nodes(self):
# Create server instance
self.ua_server = Server('./opcua_cache')
self.ua_server.set_endpoint('opc.tcp://0.0.0.0:4840/UA/PickByLight')
self.ua_server.set_server_name("Pick By Light Server")
# idx name will be used later for creating the xml used in data type dictionary
# setup our own namespace, not really necessary but should as spec
idx_name = 'http://examples.freeopcua.github.io'
self.idx = self.ua_server.register_namespace(idx_name)
# Set all possible endpoint policies for clients to connect through
self.ua_server.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
ua.SecurityPolicyType.Basic128Rsa15_Sign,
ua.SecurityPolicyType.Basic256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256_Sign
])
# get Objects node, this is where we should put our custom stuff
objects = self.ua_server.get_objects_node()
# Create objects for the pack tags using the above created packMLBasedObjectType
self.Status = objects.add_folder('ns=2;s=Status', "Status")
self.Command = objects.add_folder('ns=2;s=Command', "Command")
self.Command.add_method('ns=2;s=Command.SelectPort', "SelectPort",
self._select_method,
[ua.VariantType.Int32, ua.VariantType.String],
[ua.VariantType.Boolean])
self.Command.add_method('ns=2;s=Command.DeselectPort', "DeselectPort",
self._deselect_method, [ua.VariantType.Int32],
[ua.VariantType.Boolean])
self.Command.add_method('ns=2;s=Command.DeselectAllPorts',
"DeselectAllPorts", self._deselect_all_method,
[], [ua.VariantType.Boolean])
root = self.ua_server.get_root_node()
DummyFestoObj = root.add_object(
"ns=2;s=|var|CECC-LK.Application.Flexstation_globalVariables",
"DummyFesto")
DummyFestoObj.add_variable(
"ns=2;s=|var|CECC-LK.Application.Flexstation_globalVariables.FlexStationStatus",
"FlexStationStatus",
val=0).set_writable()
DummyFestoObj.add_variable(
"ns=2;s=|var|CECC-LK.Application.FBs.stpStopper1.stAppControl.uiOpNo",
"uiOpNo",
val=0).set_writable()
DummyFestoObj.add_variable(
"ns=2;s=ns=2;s=|var|CECC-LK.Application.AppModul.stRcvData.sOderDes",
"sOderDes",
val="").set_writable()
def _generate_tags(self):
# for all ports generate tags
for port_number, port in self._pbl.get_ports():
# Make a folder with the port_number as the name
b_obj = self.Status.add_object(
'ns=2;s=Status.Port_{}'.format(port_number),
"Port_{}".format(port_number))
content = self._pbl.get_content(port_number)
b_obj.add_variable(
"ns=2;s=Status.Port_{}.Selected".format(port_number),
"Selected", bool())
b_obj.add_variable(
"ns=2;s=Status.Port_{}.WorkFinished".format(port_number),
"WorkFinished", bool())
b_obj.add_variable(
"ns=2;s=Status.Port_{}.Instructions".format(port_number),
"Instructions", "")
b_obj.add_variable(
"ns=2;s=Status.Port_{}.Activity".format(port_number),
"Activity", bool())
b_obj.add_variable(
"ns=2;s=Status.Port_{}.ActivityTimestamp".format(port_number),
"ActivityTimestamp", datetime.fromtimestamp(0))
b_obj.add_variable(
"ns=2;s=Status.Port_{}.LightState".format(port_number),
"LightState", 0)
b_obj.add_variable(
"ns=2;s=Status.Port_{}.ContentDisplayName".format(port_number),
"ContentDisplayName", content['display_name'])
b_obj.add_variable(
"ns=2;s=Status.Port_{}.ContentName".format(port_number),
"ContentName", content['name'])
b_obj.add_variable(
"ns=2;s=Status.Port_{}.ContentDescription".format(port_number),
"ContentDescription", content['description'])
b_obj.add_variable(
"ns=2;s=Status.Port_{}.ContentImagePath".format(port_number),
"ContentImagePath", content['image_path'])
'''
create command tags for clients that does not support ua methods.
'''
b_obj = self.Command.add_object(
'ns=2;s=Command.Port_{}'.format(port_number),
"Port_{}".format(port_number))
b_obj.add_variable(
"ns=2;s=Command.Port_{}.Select".format(port_number), "Select",
bool()).set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.Deselect".format(port_number),
"Deselect", bool()).set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.Instructions".format(port_number),
"Instructions", "").set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.ContentDisplayName".format(
port_number), "ContentDisplayName",
content['display_name']).set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.ContentName".format(port_number),
"ContentName", content['name']).set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.ContentDescription".format(
port_number), "ContentDescription",
content['description']).set_writable()
b_obj.add_variable(
"ns=2;s=Command.Port_{}.ContentImagePath".format(port_number),
"ContentImagePath", content['image_path']).set_writable()
'''
Generate some common commands
'''
# Make a folder for the commons
b_obj = self.Command.add_object('ns=2;s=Command.ByContent',
'ByContent')
b_obj.add_variable("ns=2;s=Command.ByContent.Select", "Select",
bool()).set_writable()
b_obj.add_variable("ns=2;s=Command.ByContent.Deselect", "Deselect",
bool()).set_writable()
b_obj.add_variable("ns=2;s=Command.ByContent.Name", "Name",
"").set_writable()
b_obj.add_variable("ns=2;s=Command.ByContent.Instructions",
"Instructions", "").set_writable()
b_obj.add_variable("ns=2;s=Command.ByContent.Result", "Result",
-1).set_writable()
def _generate_subscriptions(self):
# Create UA subscriber node for the box. Set self as handler.
sub = self.ua_server.create_subscription(100, self)
# Subscribe to the Select tag and all the content tags
for port_number, port in self._pbl.get_ports():
ac = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.Select".format(port_number))
sub.subscribe_data_change(ac)
ac = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.Deselect".format(port_number))
sub.subscribe_data_change(ac)
b = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.ContentDisplayName".format(
port_number))
sub.subscribe_data_change(b)
c = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.ContentName".format(port_number))
sub.subscribe_data_change(c)
d = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.ContentDescription".format(
port_number))
sub.subscribe_data_change(d)
e = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.ContentImagePath".format(port_number))
sub.subscribe_data_change(e)
a = self.ua_server.get_node("ns=2;s=Command.ByContent.Select")
sub.subscribe_data_change(a)
a = self.ua_server.get_node("ns=2;s=Command.ByContent.Deselect")
sub.subscribe_data_change(a)
a = self.ua_server.get_node("ns=2;s=Command.ByContent.Name")
sub.subscribe_data_change(a)
a = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Instructions")
sub.subscribe_data_change(a)
def _event_notification(self, event):
logger.warning(
"Python: New event. No function implemented. {}".format(event))
def _select_method(self, parrent, port_number, instructions):
r = self._pbl.select_port(port_number.Value,
instructions=instructions.Value)
return [ua.Variant(value=r, varianttype=ua.VariantType.Boolean)]
def _deselect_method(self, parrent, port_number):
r = self._pbl.deselect_port(port_number.Value)
return [ua.Variant(value=r, varianttype=ua.VariantType.Boolean)]
def _deselect_all_method(self, parrent):
r = self._pbl.deselect_all()
return [ua.Variant(value=r, varianttype=ua.VariantType.Boolean)]
def datachange_notification(self, node, val, data):
"""UA server callback on data change notifications
Arguments:
node {Node} -- [description]
val {[type]} -- [description]
data {[type]} -- [description]
"""
logger.debug("New data change event. node:{}, value:{}".format(
node, val))
# Sorry about these lines of code, but I don't see any nicer way of determining the port number than from
# the identifier string. Then splitting it up to isolate the port number.
# Example "Status.Port_2.Selected" is split into ['Status', 'Port_2', 'Selected'] then 'Port_2' is split into
# ['Port', '2'] and then the '2' is turned into an intiger.
path_list = str(node.nodeid.Identifier).split(".")
# We can safely assume that the last term is the tag that updated.
tag = path_list[-1]
# Figure out the port number
port_number = None
if 'Port' in path_list[1]:
port_number = int(path_list[1].split("_")[-1])
""" Switch for each possible tag"""
# If the command tag "Select" changes go select that port with the instructions saved in the command tag.
if tag == 'Select' and port_number:
if val == True:
node = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.Instructions".format(port_number))
instructions = node.get_value()
self._pbl.select_port(port_number, instructions=instructions)
# Reset the select flag
node = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.Select".format(port_number))
node.set_value(False)
elif tag == 'Deselect' and port_number:
if val == True:
self._pbl.deselect_port(port_number, work_finished=True)
# Reset the select flag
node = self.ua_server.get_node(
"ns=2;s=Command.Port_{}.Deselect".format(port_number))
node.set_value(False)
elif tag == 'ContentDisplayName' and port_number:
self._pbl.set_content_key(port_number, 'display_name', str(val))
elif tag == 'ContentName' and port_number:
self._pbl.set_content_key(port_number, 'name', str(val))
elif tag == 'ContentDescription' and port_number:
self._pbl.set_content_key(port_number, 'description', str(val))
elif tag == 'ContentImagePath' and port_number:
self._pbl.set_content_key(port_number, 'image_path', str(val))
elif tag == 'Select' and 'ByContent' in path_list[1]:
if val == True:
instructions = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Instructions").get_value()
name = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Name").get_value()
_, selected_port = self._pbl.select_content(
name=name, instructions=instructions)
# Reset the select flag
node = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Select")
node.set_value(False)
node = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Result")
node.set_value(selected_port)
elif tag == 'Deselect' and 'ByContent' in path_list[1]:
if val == True:
name = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Name").get_value()
self._pbl.deselect_content(name=name, work_finished=True)
# Reset the select flag
node = self.ua_server.get_node(
"ns=2;s=Command.ByContent.Deselect")
node.set_value(False)
def _var_updater(self):
while True:
sleep(0.1)
# for all boxes update tags
for port_number, port in self._pbl.get_ports():
# get the object in the packml status object using our unique idx
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.Activity".format(port_number))
node.set_value(port.activity)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.ActivityTimestamp".format(
port_number))
node.set_value(port.activity_timestamp)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.LightState".format(port_number))
node.set_value(port.get_light())
state = self._pbl.get_port_state(port_number)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.Selected".format(port_number))
node.set_value(state.selected)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.WorkFinished".format(port_number))
node.set_value(state.work_finished)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.Instructions".format(port_number))
node.set_value(state.select_instructions)
content = self._pbl.get_content(port_number)
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.ContentDisplayName".format(
port_number))
node.set_value(content['display_name'])
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.ContentName".format(port_number))
node.set_value(content['name'])
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.ContentDescription".format(
port_number))
node.set_value(content['description'])
node = self.ua_server.get_node(
"ns=2;s=Status.Port_{}.ContentImagePath".format(
port_number))
node.set_value(content['image_path'])
class TestServer:
lang = "cs"
def __init__(self, endpoint, name):
parser = argparse.ArgumentParser()
parser.add_argument("--start_state", "-s", type=int, default=0)
args = parser.parse_args()
start_state = args.start_state
root_dir = os.path.join(os.path.dirname(__file__),
os.path.pardir).replace('\\', '/')
print(root_dir)
variants_file = os.path.join(root_dir, "utils",
"next_states.json").replace('\\', '/')
variants_file_desc = os.path.join(root_dir, "utils",
"state_description.json").replace(
'\\', '/')
with open(variants_file, encoding="utf-8") as f:
self.state_descriptions = json.load(f, encoding="utf-8")[self.lang]
with open(variants_file_desc, encoding="utf-8") as f:
self.next_state_description = json.load(
f, encoding="utf-8")[self.lang]
self.server = Server()
# self.server.import_xml(model_filepath) # normally, definition would be loaded here
self.server.set_endpoint(endpoint) # specify the endpoint (address)
self.server.set_server_name(name) # specify server name (whatever)
objects = self.server.get_objects_node(
) # get the object containing entity
myobj = objects.add_object(4, "DATA") # create new object
horse = myobj.add_object(4, "horse") # create new object
self.mic_active = horse.add_variable(4, "request", False)
self.mic_active.set_writable()
response_string = horse.add_variable(4, "response", "")
response_string.set_writable()
self.actual_state = horse.add_variable(4, "actual_state", True)
self.actual_state_num = self.actual_state.add_variable(4, "number", 0)
self.actual_state.add_variable(4, "ready", True)
next_state_choice = horse.add_variable(4, "next_state_choice", True)
self.request_var = next_state_choice.add_variable(4, "request", False)
self.request_var.set_writable()
dt = ua.DataValue(ua.Variant(
0, ua.VariantType.Int16)) # to ensure correct data type
self.state_num = next_state_choice.add_variable(4, "state_num", dt)
self.state_num.set_writable()
self.next_state_possibilities = horse.add_variable(
4, "next_state_possibilities", [1, 70, 80])
self.change_state(start_state)
print(
f"Server is in state {self.actual_state_num.get_value()} and the possibilities are {type(self.next_state_possibilities.get_value())}"
)
self.start() # start the server
self.mic_active.set_value(False)
subHandler = SubHandler(self)
sub = self.server.create_subscription(500, subHandler)
handle = sub.subscribe_data_change(self.request_var)
handle_response = sub.subscribe_data_change(response_string)
handle_actual = sub.subscribe_data_change(self.actual_state_num)
# while True:
try:
print("Server started.")
while True:
# print("mic mic", self.mic_active.get_value())
# time.sleep(10) # the variable "mic_active" will be changed periodically every 10 seconds in this loop
# change the mic_active (if True -> False, if False -> True)
# mic_active.set_value(not mic_active.get_value())
inp = readInput("", timeout=10)
if inp == "q":
break
elif inp == "r":
self.mic_active.set_value(True)
print(
f"Variable 'mic_active' changed to {self.mic_active.get_value()}."
)
elif inp == "w":
self.mic_active.set_value(False)
print(
f"Variable 'mic_active' changed to {self.mic_active.get_value()}."
)
except KeyboardInterrupt:
print("User requested interruption.")
except Exception:
exc_type, exc_value, exc_traceback = sys.exc_info()
traceback.print_exception(exc_type,
exc_value,
exc_traceback,
limit=2,
file=sys.stdout)
sub.unsubscribe(handle) # cancel subscription
sub.unsubscribe(handle_response) # cancel subscription
sub.unsubscribe(handle_actual) # cancel subscription
sub.delete()
def change_state(self, next_state):
current_state = str(self.actual_state_num.get_value())
print(f"Changing state from {current_state} to {next_state}.")
if current_state in self.state_descriptions:
self.next_state_possibilities.set_value(
self.state_descriptions[current_state])
self.actual_state_num.set_value(next_state)
def check_current_state(self):
state = str(self.actual_state_num.get_value())
if state in self.state_descriptions:
next_states = self.state_descriptions[state]
# self.next_state_possibilities = horse.add_variable(4, "next_state_possibilities", next_states)
self.next_state_possibilities.set_value(next_states)
# self.next_state_possibilities.set_value = next_states
if len(next_states) == 1:
next_state = next_states[0]
# print(self.next_state_description)
if str(next_state) in self.next_state_description:
print(
f"Current state {state} has single next state: {next_state}"
)
print(self.next_state_possibilities)
print(self.actual_state)
self.mic_active.set_value(True)
else:
print(
f"Current state {state} does not require user input, skipping to next state: {next_state}"
)
self.actual_state_num.set_value(next_state)
self.mic_active.set_value(False)
else:
print(
f"Current state {state} has multiple choices: {next_states}"
)
self.mic_active.set_value(True)
else:
print("Current state is not in the state description file!")
def start(self):
self.server.start()
return self.server
def stop(self):
self.server.stop()
myfolder = objects.add_folder(idx, "myfolder")
myobj = objects.add_object(idx, "NewObject")
myvar = myobj.add_variable(idx, "MyVariable", 6.7)
myarrayvar = myobj.add_variable(idx, "myarrayvar", [6.7, 7.9])
myprop = myobj.add_property(idx, "myproperty", "I am a property")
mymethod = myobj.add_method(idx, "mymethod", func, [ua.VariantType.Int64], [ua.VariantType.Boolean])
multiply_node = myobj.add_method(
idx, "multiply", multiply, [ua.VariantType.Int64, ua.VariantType.Int64], [ua.VariantType.Int64]
)
# creating an event object
# The event object automatically will have members for all events properties
myevent = server.get_event_object(ObjectIds.BaseEventType)
myevent.Message.Text = "This is my event"
myevent.Severity = 300
# starting!
server.start()
print("Available loggers are: ", logging.Logger.manager.loggerDict.keys())
try:
handler = SubHandler()
# enable following if you want to subscribe to nodes on server side
sub = server.create_subscription(500, handler)
handle = sub.subscribe_data_change(myvar)
# trigger event, all subscribed clients wil receive it
myevent.trigger()
embed()
finally:
server.stop()
timer.set_writable()
# starting!
server.start()
print("Available loggers are: ", logging.Logger.manager.loggerDict.keys())
try:
# create handler objects
mode_handler = SubHandler_mode()
direction_handler = SubHandler_direction()
start_handler = SubHandler_start()
timer_handler = SubHandler_timer()
# subscribe to nodes on server side
sub_dir = server.create_subscription(100, handler=direction_handler)
sub_mode = server.create_subscription(50, mode_handler)
sub_start = server.create_subscription(50, start_handler)
sub_timer = server.create_subscription(30, timer_handler)
handle_mode = sub_mode.subscribe_data_change(mode)
handle_dir = sub_dir.subscribe_data_change(direction)
handle_start = sub_start.subscribe_data_change(start)
handle_timer = sub_timer.subscribe_data_change(timer)
# embed interactive shell
embed()
# reset Candy Grabber
CG.reset()
print(mode)
class UAServer:
def __init__(self,rack : rack_controller):
self.rack = rack
self._setup_nodes()
self._generate_tags()
self.ua_server.start()
self._generate_subscriptions()
Thread(target=self._var_updater, daemon=True).start()
def _setup_nodes(self):
# Create server instance
self.ua_server = Server('./opcua_cache')
self.ua_server.set_endpoint('opc.tcp://0.0.0.0:4840/UA/PickByLight')
self.ua_server.set_server_name("Pick By Light Server")
# idx name will be used later for creating the xml used in data type dictionary
# setup our own namespace, not really necessary but should as spec
idx_name = 'http://examples.freeopcua.github.io'
self.idx = self.ua_server.register_namespace(idx_name)
# Set all possible endpoint policies for clients to connect through
self.ua_server.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
ua.SecurityPolicyType.Basic128Rsa15_Sign,
ua.SecurityPolicyType.Basic256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256_Sign])
# get Objects node, this is where we should put our custom stuff
objects = self.ua_server.get_objects_node()
# add a PackMLObjects folder
pml_folder = objects.add_folder(self.idx, "PackMLObjects")
# Get the base type object
types = self.ua_server.get_node(ua.ObjectIds.BaseObjectType)
# Create a new type for PackMLObjects
PackMLBaseObjectType = types.add_object_type(self.idx, "PackMLBaseObjectType")
# Create objects for the pack tags using the above created packMLBasedObjectType
self.Admin = pml_folder.add_object('ns=2;s=Admin', "Admin", PackMLBaseObjectType.nodeid)
self.Status = pml_folder.add_object('ns=2;s=Status', "Status", PackMLBaseObjectType.nodeid)
self.Command = pml_folder.add_object('ns=2;s=Command', "Command", PackMLBaseObjectType.nodeid)
# Create an object container for the rack
self.RackStatus = self.Status.add_object('ns=2;s=Status.Rack', 'Rack')
#BoxesCommonStatus = BoxesStatus.add_object('ns=2;s=Status.Boxes.Common', 'Common')
root = self.ua_server.get_root_node()
DummyFestoObj = root.add_object("ns=2;s=|var|CECC-LK.Application.Flexstation_globalVariables", "DummyFesto")
DummyFestoObj.add_variable("ns=2;s=|var|CECC-LK.Application.Flexstation_globalVariables.FlexStationStatus", "FlexStationStatus", val=0).set_writable()
DummyFestoObj.add_variable("ns=2;s=|var|CECC-LK.Application.FBs.stpStopper1.stAppControl.uiOpNo","uiOpNo", val=0).set_writable()
def _generate_tags(self):
# for all ports generate tags
for port_number in self.rack.ports:
# Make a folder with the port_number as the name
b_obj = self.RackStatus.add_object('ns=2;s=Status.Rack.{}'.format(port_number), str(port_number))
b_obj.add_variable("ns=2;s=Status.Rack.{}.Selected".format(port_number) ,"Selected" , bool())
b_obj.add_variable("ns=2;s=Status.Rack.{}.Activity".format(port_number) ,"Activity" , bool())
b_obj.add_variable("ns=2;s=Status.Rack.{}.ActivityTimestamp".format(port_number) ,"ActivityTimestamp", datetime.fromtimestamp(0))
b_obj.add_variable("ns=2;s=Status.Rack.{}.PickTimestamp".format(port_number) ,"PickTimestamp" , datetime.fromtimestamp(0))
b_obj.add_variable("ns=2;s=Status.Rack.{}.LightState".format(port_number) ,"LightState" , bool())
b_obj.add_variable("ns=2;s=Status.Rack.{}.BoxId".format(port_number) ,"BoxId" , str())
b_obj.add_variable("ns=2;s=Status.Rack.{}.ContentId".format(port_number) ,"ContentId" , str())
b_obj.add_variable("ns=2;s=Status.Rack.{}.ContentCount".format(port_number) ,"ContentCount" , int())
'''
create command tags for clients that does not support ua methods.
'''
# create an object in the packml Command object called rack for all the commands.
b_obj = self.Command.add_object("ns=2;s=Command.Rack", 'Rack')
# Create command tag for triggering the selection
b_obj.add_variable("ns=2;s=Command.Rack.Select", 'Select', -1, ua.VariantType.Int16).set_writable()
b_obj.add_variable("ns=2;s=Command.Rack.DeSelect", 'DeSelect', -1, ua.VariantType.Int16).set_writable()
def _generate_subscriptions(self):
# Create UA subscriber node for the box. Set self as handler.
sub = self.ua_server.create_subscription(100, self)
# Subscribe to the Select tag
n = self.ua_server.get_node("ns=2;s=Command.Rack.Select")
sub.subscribe_data_change(n)
# Subscribe to the Deselect tag
n = self.ua_server.get_node("ns=2;s=Command.Rack.DeSelect")
sub.subscribe_data_change(n)
pass
def event_notification(self, event):
print("Python: New event. No function implemented", event)
def datachange_notification(self, node, val, data):
"""UA server callback on data change notifications
This is a workaround for kepware that does not support
UA methods, so instead is has "trigger tags" that when
set to true it works like calling a method.
TODO make this more dynamic instead of hard coding the attributes.
Arguments:
node {Node} -- [description]
val {[type]} -- [description]
data {[type]} -- [description]
"""
# avoid triggereing it all again when resetting the tags to -1
if val != -1 :
# Print info
print("New data change event", node, val)
# get the node browse name.
node_id = node.get_browse_name().Name
# If the trigger tag changes to true go in and update the status tag and set the trigger back to false.
# Also read description above.
if node_id == "Select" :
self.rack.select_port(val)
node.set_value(-1)
elif node_id == "Deselect" :
self.rack.select_port(val)
node.set_value(-1)
def _var_updater(self):
while True:
sleep(0.1)
# for all boxes update tags
for port_number, port in self.rack.ports.items():
# get the object in the packml status object using our unique idx
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.Activity".format(port_number))
node.set_value(port.activity)
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.ActivityTimestamp".format(port_number))
node.set_value(port.activity_timestamp)
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.LightState".format(port_number))
node.set_value(port.get_light())
for port_number, box in self.rack.boxes.items():
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.BoxId".format(port_number))
node.set_value(box.box_id)
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.ContentId".format(port_number))
node.set_value(box.content_id)
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.ContentCount".format(port_number))
node.set_value(box.content_count)
for port_number, select_state in self.rack.ports_select_state.items():
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.Selected".format(port_number))
node.set_value(select_state.selected)
node = self.ua_server.get_node("ns=2;s=Status.Rack.{}.PickTimestamp".format(port_number))
node.set_value(select_state.pick_timestamp)
