def opcua_converter_main(options):
# setup our server
server = Server()
uasecurity = UaSecurity()
if uasecurity.get_securitytype() == 'tls':
server_cert, client_cert, private_key = uasecurity.get_certificates()
if server_cert is None:
logger.error(
'tls is enabled, but server cert is missing with current configuration'
)
sys.exit(-1)
if private_key is None:
logger.error(
'tls is enabled, but private key is missing with current configuration'
)
sys.exit(-1)
server.load_certificate(server_cert)
server.load_private_key(private_key)
ConfigHistoryStorage(server)
server.start()
# setup adapter
adapter = PlugInAdapter(options.conf_file)
handler = SubHandler(server, adapter)
handler.run()
adapter.subscription(handler.datachange_notification,
handler.event_notification)
adapter.start()
try:
while True:
logger.debug('opcua converter running......')
time.sleep(60)
finally:
# close connection, remove subcsriptions, etc
adapter.stop()
server.stop()
import time
from opcua import ua, Server
if __name__ == "__main__":
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# load server certificate and private key. This enables endpoints
# with signing and encryption.
server.load_certificate("example-certificate.der")
server.load_private_key("example-private-key.pem")
# setup our own namespace, not really necessary but should as spec
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
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()
OPC-UA-Server Setup
"""
server = Server()
endpoint = "opc.tcp://127.0.0.1:4840"
server.set_endpoint(endpoint)
servername = "Python-OPC-UA"
server.set_server_name(servername)
address_space = server.register_namespace("http://andreas-heine.net/UA")
uri = "urn:opcua:python:server"
server.set_application_uri(uri)
server.load_certificate("certificate.pem")
server.load_private_key("key.pem")
server.set_security_policy([
# ua.SecurityPolicyType.NoSecurity,
# ua.SecurityPolicyType.Basic128Rsa15_Sign,
# ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
# ua.SecurityPolicyType.Basic256Sha256_Sign,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt
])
policyIDs = ["Username"]
server.set_security_IDs(policyIDs)
server.user_manager.set_user_manager(user_manager)
"""
OPC-UA-Modeling
"""
root_node = server.get_root_node()
object_node = server.get_objects_node()
server.name = "AggregationServer"
server.set_endpoint("opc.tcp://127.0.0.1:8000/AggregationServer/")
server.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic128Rsa15_Sign,
ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
ua.SecurityPolicyType.Basic256_Sign,
ua.SecurityPolicyType.Basic256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256Sha256_Sign
])
# load server certificate and private key. This enables endpoints
server.load_certificate(certificate_path + "server_certificate.der")
server.load_private_key(certificate_path + "server_private_key.pem")
# Setup our namespace
uri = "http://Aggregation.Server.opcua"
#Getting the index of our nasmespace
idx = server.register_namespace(uri)
# get Objects node. This is where we should put our custom stuff
objects = server.get_objects_node()
# populate our namespace with the aggreagated element and their variables
aggregator = objects.add_folder(idx, "Aggregated Servers")
# definition of our custom object type -> AggregatedServer
types = server.get_node(ua.ObjectIds.BaseObjectType)
mycustomobj_type = types.add_object_type(idx, "AggregatedServerType")
sys.path.insert(0, "..")
from opcua import ua, Server
if __name__ == "__main__":
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# load server certificate and private key. This enables endpoints
# with signing and encryption.
server.load_certificate("certificate-example.der")
server.load_private_key("private-key-example.pem")
# setup our own namespace, not really necessary but should as spec
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
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()
print("status from AI server:" + str(body))
return str(body)
if __name__ == "__main__":
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# load server certificate and private key. This enables endpoints
# with signing and encryption.
pc = getattr(security_policies, 'SecurityPolicy' + "Basic256Sha256")
server.load_certificate("certificate-example.der")
server.load_private_key("private-key-example.pem")
# setup our own namespace, not really necessary but should as spec
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
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()
for row in cursor.execute(
'SELECT ip,port,tty,speed,timeout FROM servers where id =' +
idServ):
serverSlave = row[0]
portSlave = row[1]
serialPort = row[2]
ttySpeed = row[3]
timeOut = row[4]
server = Server()
server.set_endpoint("opc.tcp://" + serverSlave + ":" + portSlave +
"/srv/")
server.set_server_name("Server")
server.load_certificate(pathFolder + "server_cert.der")
server.load_private_key(pathFolder + "server_private_key.pem")
uri = "http://opcua.server.ru"
idx = server.register_namespace(uri)
objects = server.get_objects_node()
cursor.execute(
"select ip,reg,toAdr,fromCount,comment,login,password from master_http where serverId = "
+ idServ)
dt = cursor.fetchall()
units = len(dt)
for i in range(0, len(dt)):
reg.append(i)
host.append(i)
login.append(i)
from firebase import Firebase
from datetime import timedelta
# from opcua.server.history_sql import HistorySQLite
import time
import datetime
import sys
sys.path.insert(0, "..")
import csv
server = Server()
# adding the trust certificate
url= 'opc.tcp://127.0.0.1:8080'
server.set_endpoint(url)
server.set_security_policy([ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt])
server.load_certificate('certificate-example.der')
server.load_private_key('private-key-example.pem')
uri = "http://examples.freeopcua.github.io"
#adding the namesapce for the nodes and generating the nodes
name = "OPCUA_SIMULATION_SERVER"
addspace = server.register_namespace(name)
node = server.get_objects_node()
#generating the parameters
param = node.add_object(addspace,"Parameter")
iTemp = param.add_variable(addspace,"Temperature",0)
iPress = param.add_variable(addspace,'Pressure',0)
iflow=param.add_variable(addspace,'Flow',0)
Time = param.add_variable(addspace,'Time',0)
import sys
import time
import psutil
from opcua import ua, Server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
server.load_certificate("myCertificate.der")
server.load_private_key("myPrivateKey.pem")
server.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt,
ua.SecurityPolicyType.Basic128Rsa15_Sign])
uri = "silvia-notebook.opcua.it/freeopcua/server"
idx = server.register_namespace(uri)
objects = server.get_objects_node()
myobj = objects.add_object(idx, "MyObject")
core0temp = myobj.add_variable(idx, "Core0Temperature", psutil.sensors_temperatures()['coretemp'][1].current)
core1temp = myobj.add_variable(idx, "Core1Temperature", psutil.sensors_temperatures()['coretemp'][2].current)
core0temp.set_writable()
core1temp.set_writable()
# starting!
server.start()
try:
while True:
time.sleep(1)
core0temp.set_value(psutil.sensors_temperatures()['coretemp'][1].current)
parser.add_argument('msTimeout', nargs='?', default=10000., type=float,
help='Server timeout (ms)')
args = parser.parse_args()
signal.signal(signal.SIGINT, signal_handler)
signal.signal(signal.SIGTERM, signal_handler)
# Open server
print('Configuring FreeOpcUa test server')
#logging.basicConfig(level=logging.DEBUG)
server = Server()
server.set_endpoint(sUri)
cert_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', '..', '..', 'samples', 'ClientServer', 'data', 'cert')
server.load_certificate(os.path.join(cert_dir, 'server_2k_cert.der'))
server.load_private_key(os.path.join(cert_dir, 'server_2k_key.pem'))
# Nodes are created under the Objects node
objects = server.get_objects_node()
# Use the same nodes as in the Read test
for i,(sTypName,typ,val,_) in enumerate(variantInfoList):
nid = 1000 + i + 1
node = objects.add_variable(ua.NodeId(nid, 0), sTypName, ua.Variant(val, typ))
node.set_writable()
# Add a node which increments, the target of an interesting subscription
nodeCnt = objects.add_variable(ua.NodeId('Counter', 0), 'Counter', ua.Variant(0, ua.VariantType.UInt64))
nodeCnt.set_writable()
# Add a writable node, so that a client can subscribe to it, while another one can modify it.
nodeStr = objects.add_variable(ua.NodeId('StatusString', 0), 'StatusString', ua.Variant('Everything is ok.', ua.VariantType.String))
nodeStr.set_writable()
class CustomServer(object):
def __init__(self):
self.SERVER_ENDPOINT = os.environ.get("SERVER_ENDPOINT")
self.NAMESPACE = os.environ.get("NAMESPACE")
self.SERVER_NAME = os.environ.get("SERVER_NAME")
self.ENABLE_CERTIFICATE = bool(
strtobool(os.environ.get("ENABLE_CERTIFICATE")))
# setup our server
self.server = Server()
self.server.set_endpoint(self.SERVER_ENDPOINT)
self.server.set_server_name(self.SERVER_NAME)
# set the security endpoints for identification of clients
if self.ENABLE_CERTIFICATE:
# load server certificate and private key. This enables endpoints with signing and encryption.
self.CERTIFICATE_PATH_SERVER_CERT = os.path.dirname(
os.getcwd()) + os.environ.get("CERTIFICATE_PATH_SERVER_CERT")
self.CERTIFICATE_PATH_SERVER_PRIVATE_KEY = os.path.dirname(
os.getcwd()) + os.environ.get(
"CERTIFICATE_PATH_SERVER_PRIVATE_KEY")
self.server.load_certificate(self.CERTIFICATE_PATH_SERVER_CERT)
self.server.load_private_key(
self.CERTIFICATE_PATH_SERVER_PRIVATE_KEY)
# set all possible endpoint policies for clients to connect through
self.server.set_security_policy([
# ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
# ua.SecurityPolicyType.Basic256Sha256_Sign,
])
self.server.set_security_IDs(["Username", "Basic256Sha256"])
else:
self.server.set_security_policy([ua.SecurityPolicyType.NoSecurity])
self.server.set_security_IDs(["Anonymous", "Username"])
# set the user_manager function
self.server.user_manager.set_user_manager(user_manager)
# setup our own namespace, not really necessary but should as spec
uri = self.NAMESPACE
self.idx = self.server.register_namespace(uri)
# get important nodes
self.root = self.server.get_root_node()
self.obj = self.server.get_objects_node()
self.init_methods()
def init_methods(self):
# method: ADD_OBJECTS_DIR
inarg1 = ua.Argument()
inarg1.Name = "objects folder"
inarg1.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg1.ValueRank = -1
inarg1.ArrayDimensions = []
inarg1.Description = ua.LocalizedText("Name the new objects folder")
method_node = self.obj.add_method(self.idx, "ADD_NEW_OBJECTS_FOLDER",
self.add_objects_subfolder, [inarg1])
# method: ADD_OPC_TAG
inarg1 = ua.Argument()
inarg1.Name = "opctag"
inarg1.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg1.ValueRank = -1
inarg1.ArrayDimensions = []
inarg1.Description = ua.LocalizedText("Name new OPC variable")
inarg2 = ua.Argument()
inarg2.Name = "variant_type"
inarg2.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg2.ValueRank = -1
inarg2.ArrayDimensions = []
inarg2.Description = ua.LocalizedText("Type of variable")
inarg3 = ua.Argument()
inarg3.Name = "parent_node"
inarg3.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg3.ValueRank = -1
inarg3.ArrayDimensions = []
inarg3.Description = ua.LocalizedText(
"Type in the name of the parent node the new variable should assigned to"
)
method_node = self.obj.add_method(self.idx, "ADD_OPC_TAG",
self.register_opc_tag,
[inarg1, inarg2, inarg3])
# method: SET_PV_LIMIT
inarg1 = ua.Argument()
inarg1.Name = "active_power_setpoint"
inarg1.DataType = ua.NodeId(ua.ObjectIds.Int32) # Integer
inarg1.ValueRank = -1
inarg1.ArrayDimensions = []
inarg1.Description = ua.LocalizedText(
"Type in active power setpoint in percent [0 ... 100]")
inarg2 = ua.Argument()
inarg2.Name = "parent_node"
inarg2.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg2.ValueRank = -1
inarg2.ArrayDimensions = []
inarg2.Description = ua.LocalizedText(
"Type in the name of the parent node")
method_node = self.obj.add_method(self.idx, "SET_PV_LIMIT",
self.set_pv_active_power_setpoint,
[inarg1, inarg2])
# method: RUN_ONLINE_GRID_PROTECTION
inarg1 = ua.Argument()
inarg1.Name = "On/Off"
inarg1.DataType = ua.NodeId(ua.ObjectIds.Int32) # Integer
inarg1.ValueRank = -1
inarg1.ArrayDimensions = []
inarg1.Description = ua.LocalizedText(
"Type in 1 to RUN or 0 to STOP ONLINE_GRID_PROTECTION")
inarg2 = ua.Argument()
inarg2.Name = "parent_node"
inarg2.DataType = ua.NodeId(ua.ObjectIds.String) # String
inarg2.ValueRank = -1
inarg2.ArrayDimensions = []
inarg2.Description = ua.LocalizedText(
"Type in the name of the parent node")
method_node = self.obj.add_method(self.idx,
"RUN_ONLINE_GRID_PROTECTION",
self.run_online_grid_protection,
[inarg1, inarg2])
@uamethod
def add_objects_subfolder(self, parent, dir_name):
# check if old dir with dir_name exists. if so then delete this dir first
try:
obj = self.root.get_child(
["0:Objects", ("{}:" + dir_name).format(self.idx)])
self.server.delete_nodes([obj], True)
except BadNoMatch:
print(DateHelper.get_local_datetime(),
"There is no old folder with the name: " + dir_name)
folder = self.obj.add_folder(self.idx, dir_name)
print(DateHelper.get_local_datetime(), "Add subfolder: " + dir_name)
@uamethod
def register_opc_tag(self,
parent,
opctag,
variant_type="Float",
parent_node=""):
# Object "parent_node":
try:
obj = self.root.get_child(
["0:Objects", ("{}:" + parent_node).format(self.idx)])
except BadNoMatch:
print(
DateHelper.get_local_datetime(),
"register_opc_tag(): OPCUA_server_dir the variables should be assigned to, doesn't exists."
)
raise
var = ua.Variant(0, strings_to_vartyps(variant_type))
mvar = obj.add_variable(self.idx, opctag.strip(), var)
mvar.set_writable()
print(
DateHelper.get_local_datetime(), "Add variable: " + opctag +
" of type " + variant_type + " @node " + parent_node)
@uamethod
def set_pv_active_power_setpoint(self, parent, setpoint, parent_node=""):
try:
obj = self.root.get_child(
["0:Objects", ("{}:" + parent_node).format(self.idx)])
except BadNoMatch:
print(
DateHelper.get_local_datetime(),
"set_pv_active_power_setpoint(): assign new value to node failed."
)
raise
for mvar in obj.get_variables():
if "PV" and "CTRL" in mvar.get_browse_name().Name:
variant_type = mvar.get_data_value().Value.VariantType
mvar.set_value(clamp(setpoint, 0, 100), variant_type)
print(
DateHelper.get_local_datetime(),
"Set Value of node " + mvar.get_browse_name().Name +
" to " + str(clamp(setpoint, 0, 100)))
@uamethod
def run_online_grid_protection(self, parent, setpoint, parent_node=""):
try:
obj = self.root.get_child(
["0:Objects", ("{}:" + parent_node).format(self.idx)])
except BadNoMatch:
print(DateHelper.get_local_datetime(),
"run_online_grid_protection(): Change in On/Off failed.")
raise
for mvar in obj.get_variables():
if "RUN_ONLINE_GRID_PROTECTION" in mvar.get_browse_name().Name:
variant_type = mvar.get_data_value().Value.VariantType
mvar.set_value(clamp(setpoint, 0, 1), variant_type)
print(
DateHelper.get_local_datetime(),
"Change status of online grid protection to " +
str(clamp(setpoint, 0, 1)))
def start(self):
self.server.start()
print(DateHelper.get_local_datetime(), self.__class__.__name__,
" successful started")
def stop(self):
self.server.stop()
print(DateHelper.get_local_datetime(), self.__class__.__name__,
" successful stopped")
class OPCUAServer:
"""An OPC UA server which reads variables from a csv file and exposes it.
Args:
endpoint (:obj:`str`): OPC UA server endpoint. Defaults to
'opc.tcp://0.0.0.0:4840/intry4.0/server/'.
server_name (:obj:`str`): OPC UA server name. Defaults to
'InTry 4.0 OPC UA Server'.
security_policy (:obj:`list`): Array which contains
`opcua.ua.SecurityPolicyType` available in the server. Defaults to
[
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_Sign,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
]
ns_uri(:obj:`str`): the namespace URI where all the variables will be added.
Defaults to 'urn:intry4.0:server'.
object_name(:obj:`str`): name of the OPC UA object that will be created to hold
all variables. Defaults to 'variables'.
last_row_file (:obj:`str`): name of the file in which the last row published by
the server will be saved.
certificate (:obj:`str`): path of the certificate file used by the server.
Defaults to '/var/intry-opcua-server/cert.der'.
private_key (:obj:`str`): path of the certificate file used by the server.
Defaults to '/var/intry-opcua-server/key.pem'.
min_time(:obj:`int`): min time elapsed between variable updates. Defaults to 30.
logger(:obj:`logging.Logger`): logger to be used. Defaults to None.
Attributes:
_server (opcua.Server): the OPC UA server.
endpoint (str): OPC UA server endpoint.
_ns_index (): the namespace index where all the variables will be added.
_object ()
last_row (:obj:`dict`): last row that has been used by the server. For example:
{
"file": "csv1.csv",
"row": "2019-10-02 23:55"
}
_stop (bool): flag variable that controls the infinite loop of variable
updating.
"""
def __init__(
self,
endpoint: str = "opc.tcp://0.0.0.0:4840/intry4.0/server/",
server_name: str = "InTry 4.0 - OPC UA Server",
security_policy: List[ua.SecurityPolicyType] = None,
ns_uri: str = "urn:intry:opcua:server",
object_name: str = "variables",
last_row_file: str = "/var/intry-opcua-server/last_row.log",
certificate: str = "/var/intry-opcua-server/cert.der",
private_key: str = "/var/intry-opcua-server/key.pem",
min_time: int = 30,
logger=None,
):
if security_policy is None:
_security_policy = [
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_Sign,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
]
self._server = Server()
self.endpoint = endpoint
self._server.set_endpoint(self.endpoint)
self._server.set_security_policy(_security_policy)
self._server.load_certificate(certificate)
self._server.load_private_key(private_key)
self._ns_index = self._server.register_namespace(ns_uri)
self._object = self._server.nodes.objects.add_object(
self._ns_index, object_name
)
self._last_row_file = last_row_file
self._logger = logger or logging.getLogger(__name__)
self.last_row = {}
self._stop = False
self.min_time = min_time
def _add_variable(self, name, value):
"""Adds a variable to the OPC UA server.
Args:
name (:obj:`str`): name of the variable.
value (int or float): initial value of the variable.
Returns:
opcua.common.node.Node: the created variable in the OPC UA server.
"""
return self._object.add_variable(self._ns_index, name, value)
def _get_csvs(self, csv_dir):
"""Get the CSV files stored in the specified directory and filter the CSV which
are not required to start publishing new values from the last row that was
published.
Args:
csv_dir (:obj:`str`): path of the directory containing CSVs.
"""
self._read_last_row()
csvs = get_csvs_in_dir(csv_dir)
self._logger.debug(f"CSV files inside {csv_dir}: {len(csvs)}")
if not self.last_row:
df = pd.read_csv(csvs[0], index_col="date")
self.last_row = {"file": csvs[0], "row": df.index[0]}
file_index = csvs.index(self.last_row["file"])
return csvs[file_index:]
def variable_values_from_csvs(self, csv_dir):
"""Creates variables inside the OPC UA server from the CSVs contained in the
specified directory. Then, each row of the provided CSVs will be read to update
the value of each variable.
csv_dir (str): path of the directory containing CSVs.
"""
csvs = self._get_csvs(csv_dir)
len_csvs = len(csvs)
if len_csvs > 0:
variable_name_node = {}
for (index, csv) in enumerate(csvs):
if self._stop:
break
self._logger.info(f"Reading file {csv}")
df = pd.read_csv(csv, index_col="date")
self.last_row["file"] = csv
# If first CSV, create variables in the OPC UA Server
if index == 0:
self._logger.debug(
f"First csv readed: {csv}. Creating {len(df.columns)} OPC UA variables from it..."
)
df = df[self.last_row["row"] :]
for column in df.columns:
first_value = df[column].iloc[0]
self._logger.debug(
f"Adding variable [{column}] with initial value <{first_value}>"
)
variable_name_node[column] = self._add_variable(
column, first_value
)
# remove the first row because its going used for initial value
df = df.iloc[1:]
# iterate over the rows in the dataframe for updating the value of each variable
time_between_update = 0
last_index = None
for (index, row) in df.iterrows():
if self._stop:
break
self.last_row["row"] = index
# Calculate the time to sleep between each update with the date of the
# last row and this row.
if last_index is not None:
time_between_update = (
str_to_date(index) - str_to_date(last_index)
).total_seconds()
if time_between_update > 60:
self._logger.info(
"Time between update too high. Setting it to 60 secs..."
)
time_between_update = 60.0
elif time_between_update < self.min_time:
self._logger.info(
f"Time between update was negative or too low. Setting it to {self.min_time} secs..."
)
time_between_update = self.min_time
self._logger.info(f"Starting sleep of {time_between_update}...")
time.sleep(time_between_update)
self._logger.info(
f"Time of {time_between_update} elapsed. Updating variable values..."
)
for (column, node) in variable_name_node.items():
node.set_value(row[column])
last_index = index
def _write_last_row(self):
"""Writes the last row published to a file in JSON format."""
create_path_if_not_exists(self._last_row_file)
with open(self._last_row_file, "w+") as f:
f.write(json.dumps(self.last_row))
def _read_last_row(self):
"""Reads the last row published from a JSON file."""
if file_exists(self._last_row_file):
self._logger.info(f"Reading last row file {self._last_row_file}")
with open(self._last_row_file, "r") as f:
self.last_row = json.loads(f.read())
else:
self._logger.info(f"File {self._last_row_file} does not exist")
self.last_row = {}
def start(self):
"""Starts the OPC UA server execution."""
self._logger.info(f"Starting OPC UA server. Listening on {self.endpoint}")
self._server.start()
def stop(self):
"""Stops the OPC UA server execution."""
self._write_last_row()
self._logger.info("Stopping OPC UA server...")
self._stop = True
self._server.stop()
self.tl1.changeState(Light.green)
if color == 3:
self.tl1.changeState(Light.orange)
if __name__ == "__main__":
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# setup our own namespace, not really necessary but should as spec
uri = "http://alex.freeopcua.github.io"
idx = server.register_namespace(uri)
server.load_certificate("cert.der")
server.load_private_key("private.pem")
# set all possible endpoint policies for clients to connect through
server.set_security_policy([
# ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
# ua.SecurityPolicyType.Basic256Sha256_Sign,
])
# set the security endpoints for identification of clients
#self.server.set_security_IDs(["Anonymous", "Basic256Sha256", "Username"])
#server.set_security_IDs(["Username"])
policyIDs = ["Username"]
server.set_security_IDs(policyIDs)
# set the user_manager function
server.user_manager.set_user_manager(user_manager)
# get Objects node, this is where we should put our nodes
class ServerOPC():
def __init__(self, sensori):
self.keys=c_gpio.led_dict.keys()
self.sensori=sensori
self.__led=c_gpio.led_dict
self.init_server()
def init_server(self):
print("inizio settaggio server")
self.server=Server()
#self.server.set_endpoint("opc.tcp://192.168.1.250:4840")
self.server.set_endpoint("opc.tcp://0.0.0.0:4840")
self.server.set_server_name("DomoticProject")
#carico il certificato e la chiave privata
global base_path
file_path_cert=(base_path / "../config/certificati/my_cert.der").resolve()
file_path_key=(base_path / "../config/certificati/my_private_key.pem").resolve()
self.server.load_certificate(file_path_cert)
self.server.load_private_key(file_path_key)
self.server.set_security_policy([
ua.SecurityPolicyType.NoSecurity,
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt,
ua.SecurityPolicyType.Basic256Sha256_Sign
])
#setup namespace
uri="Domotic"
self.idx=self.server.register_namespace(uri)
self.objects=self.server.get_objects_node()
#per contenere le info dei sensori
self.sensors_o=self.objects.add_object(self.idx, "Sensori")
self.temperatura_s=self.sensors_o.add_variable(self.idx, "Temperatura", 0.00)
self.counterbagno_s=self.sensors_o.add_variable(self.idx, "Counter Bagno", 0)
self.countersalotto_s=self.sensors_o.add_variable(self.idx, "Counter Salotto", 0)
#per contenere le info dei led
self.luci_o=self.objects.add_object(self.idx, "Luci")
self.luci_o_dict={}
for x in self.keys:
self.luci_o_dict[x]=self.luci_o.add_variable(self.idx, "Luce "+x, False)
self.luci_o_dict[x].set_writable()
#per contenere i metodi
self.method_o=self.objects.add_object(self.idx, "Metodi")
inarg=ua.Argument()
inarg.Name="stanza"
inarg.DataType=ua.NodeId(ua.ObjectIds.String)
inarg.ValueRank=-1
inarg.ArrayDimensions=[]
inarg.Description=ua.LocalizedText("stanza su cui applicare il metodo ['salotto', 'camera', 'bagno', 'ingresso']")
self.mymethod1=self.method_o.add_method(self.idx, "Accendi luce", self.accendi_luce, [inarg])
self.mymethod2=self.method_o.add_method(self.idx, "Spegni luce", self.spegni_luce, [inarg])
print("server settato")
def run(self):
print("start server")
self.server.start()
try:
while True:
val=ua.Variant(self.sensori["temperatura"], ua.VariantType.Float)
val=ua.DataValue(val)
val.SourceTimestamp=datetime.utcnow()
val.ServerTimestamp=datetime.utcnow()
self.temperatura_s.set_data_value(val)
val2=ua.Variant(self.sensori["counter_bagno"], ua.VariantType.UInt16)
val2=ua.DataValue(val2)
val2.SourceTimestamp=datetime.utcnow()
val2.ServerTimestamp=datetime.utcnow()
self.counterbagno_s.set_data_value(val2)
val3=ua.Variant(self.sensori["counter_salotto"], ua.VariantType.UInt16)
val3=ua.DataValue(val3)
val3.SourceTimestamp=datetime.utcnow()
val3.ServerTimestamp=datetime.utcnow()
self.countersalotto_s.set_data_value(val3)
for x in self.keys:
pin=self.__led[x]
status=gpio.input(pin)
var=ua.Variant(status, ua.VariantType.Boolean)
s=ua.DataValue(var)
s.SourceTimestamp=datetime.utcnow()
s.ServerTimestamp=datetime.utcnow()
self.luci_o_dict[x].set_value(s)
time.sleep(1)
finally:
self.server.stop()
@uamethod
def accendi_luce(self, parent, stanza):
pin=self.__led[stanza]
if stanza=="salotto":
s=gpio.input(2)
gpio.output(2, 1)
gpio.output(pin, 0)
else:
gpio.output(pin, 1)
@uamethod
def spegni_luce(self, parent, stanza):
pin=self.__led[stanza]
if stanza=="salotto":
s=gpio.input(2)
gpio.output(2, 0)
gpio.output(pin, 1)
else:
gpio.output(pin, 0)
def uaserver():
parser = argparse.ArgumentParser(description="Run an example OPC-UA server. By importing xml definition and using uawrite command line, it is even possible to expose real data using this server")
# we setup a server, this is a bit different from other tool so we do not reuse common arguments
parser.add_argument("-u",
"--url",
help="URL of OPC UA server, default is opc.tcp://0.0.0.0:4840",
default='opc.tcp://0.0.0.0:4840',
metavar="URL")
parser.add_argument("-v",
"--verbose",
dest="loglevel",
choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
default='WARNING',
help="Set log level")
parser.add_argument("-x",
"--xml",
metavar="XML_FILE",
help="Populate address space with nodes defined in XML")
parser.add_argument("-p",
"--populate",
action="store_true",
help="Populate address space with some sample nodes")
parser.add_argument("-c",
"--disable-clock",
action="store_true",
help="Disable clock, to avoid seeing many write if debugging an application")
parser.add_argument("-s",
"--shell",
action="store_true",
help="Start python shell instead of randomly changing node values")
parser.add_argument("--certificate",
help="set server certificate")
parser.add_argument("--private_key",
help="set server private key")
args = parser.parse_args()
logging.basicConfig(format="%(levelname)s: %(message)s", level=getattr(logging, args.loglevel))
server = Server()
server.set_endpoint(args.url)
if args.certificate:
server.load_certificate(args.certificate)
if args.private_key:
server.load_private_key(args.private_key)
server.disable_clock(args.disable_clock)
server.set_server_name("FreeOpcUa Example Server")
if args.xml:
server.import_xml(args.xml)
if args.populate:
@uamethod
def multiply(parent, x, y):
print("multiply method call with parameters: ", x, y)
return x * y
uri = "http://examples.freeopcua.github.io"
idx = server.register_namespace(uri)
objects = server.get_objects_node()
myobj = objects.add_object(idx, "MyObject")
mywritablevar = myobj.add_variable(idx, "MyWritableVariable", 6.7)
mywritablevar.set_writable() # Set MyVariable to be writable by clients
myvar = myobj.add_variable(idx, "MyVariable", 6.7)
myarrayvar = myobj.add_variable(idx, "MyVarArray", [6.7, 7.9])
myprop = myobj.add_property(idx, "MyProperty", "I am a property")
mymethod = myobj.add_method(idx, "MyMethod", multiply, [ua.VariantType.Double, ua.VariantType.Int64], [ua.VariantType.Double])
server.start()
try:
if args.shell:
embed()
elif args.populate:
count = 0
while True:
time.sleep(1)
myvar.set_value(math.sin(count / 10))
myarrayvar.set_value([math.sin(count / 10), math.sin(count / 100)])
count += 1
else:
while True:
time.sleep(1)
finally:
server.stop()
sys.exit(0)
def __init__(self, name, shared):
super().__init__(name, shared)
self.logger = logging.getLogger(self.name)
self.logger.info("init")
self.shared.config.set_hidden_value(self.name, "user")
self.shared.config.set_hidden_value(self.name, "password")
self.shared.config.set_hidden_value(self.name, "password_hash")
def config(key, val):
return self.shared.config.config(self.name, key, val)
endpoint = config("endpoint", "no_endpoint")
certificate = config("certificate", "")
private_key = config("private_key", "")
uri = config("uri", "http://examples.freeopcua.github.io")
root_object_name = config("root_object_name", "TEST")
separator = config("separator", ".")
namespace = config("namespace", 2)
self.oldnew = config("oldnew_comparision", 0)
admin_username = config("user", "admin")
admin_password = config("password", "admin")
admin_password_hash = config("password_hash", "").replace("$$", "$")
security_ids = []
anonymous_on = config("anonymous_on", 0)
username_on = config("username_on", 1)
certificate_on = config("certificate_basic256sha256_on", 0)
if anonymous_on:
security_ids.append("Anonymous")
if username_on:
security_ids.append("Username")
if certificate_on:
security_ids.append("Basic256Sha256")
security_policy = []
if config("nosecurity_on", 1):
security_policy.append(ua.SecurityPolicyType.NoSecurity)
if config("basic128rsa15_sign_on", 0):
security_policy.append(ua.SecurityPolicyType.Basic128Rsa15_Sign)
if config("basic128rsa15_signandencrypt_on", 0):
security_policy.append(
ua.SecurityPolicyType.Basic128Rsa15_SignAndEncrypt)
if config("basic256_sign_on", 0):
security_policy.append(ua.SecurityPolicyType.Basic256_Sign)
if config("basic256_signandencrypt_on", 0):
security_policy.append(
ua.SecurityPolicyType.Basic256_SignAndEncrypt)
if config("basic256sha256_sign_on", 1):
security_policy.append(ua.SecurityPolicyType.Basic256Sha256_Sign)
if config("basic256sha256_signandencrypt_on", 1):
security_policy.append(
ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt)
initial_values_is_quality_good = config(
"initial_values_is_quality_good", 0)
if anonymous_on:
server = Server()
else:
server = Server(iserver=CustomInternalServer())
server.iserver.set_parent(server)
server.set_endpoint(endpoint)
server.allow_remote_admin(False)
if certificate and private_key:
server.load_certificate(str(certificate))
server.load_private_key(str(private_key))
if security_ids:
server.set_security_IDs(security_ids)
if security_policy:
server.set_security_policy(security_policy)
def custom_user_manager(isession, userName, password):
if userName != admin_username:
return False
if admin_password_hash:
if werkzeug.security.check_password_hash(
admin_password_hash, password):
return True
else:
# fallback to plaintext
if password == admin_password:
return True
return False
if username_on:
server.user_manager.set_user_manager(custom_user_manager)
idx = server.register_namespace(uri)
objects = server.get_objects_node()
root = objects.add_object(idx, root_object_name)
self.server = server
self.objects = objects
self.root = root
self.sep = separator
self.ns = namespace
self.items = []
if initial_values_is_quality_good:
self.initial_status_code = ua.StatusCodes.Good
else:
self.initial_status_code = ua.StatusCodes.BadWaitingForInitialData
#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)
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
server.set_server_name("FreeOpcUa Example Server")
server.load_certificate("robotarm_cert.der")
server.load_private_key("robotarm_pk.pem")
# setup our own namespace, not really necessary but should as spec
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, "GFISmartFleet")
myobj = server.get_root_node().get_child(["0:Objects", "2:GFISmartFleet"
]).add_object(idx, "RobotArm")
var_Servo_left_angle = myobj.add_variable(idx, "Servo_left_angle", 90)
var_Servo_left_angle.set_writable()
import sys
sys.path.insert(0, "..")
import time
from opcua import ua, Server
if __name__ == "__main__":
# setup our server
server = Server()
server.set_endpoint("opc.tcp://0.0.0.0:4840/freeopcua/server/")
# load server certificate and private key. This enables endpoints
# with signing and encryption.
server.load_certificate("example-certificate.der")
server.load_private_key("example-private-key.pem")
# setup our own namespace, not really necessary but should as spec
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
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()
class TestCryptoConnect(unittest.TestCase):
'''
Test connectino with a server supporting crypto
'''
@classmethod
def setUpClass(self):
# start our own server
self.srv_crypto = Server()
self.uri_crypto = 'opc.tcp://localhost:%d' % port_num1
self.srv_crypto.set_endpoint(self.uri_crypto)
# load server certificate and private key. This enables endpoints
# with signing and encryption.
self.srv_crypto.load_certificate("examples/certificate-example.der")
self.srv_crypto.load_private_key("examples/private-key-example.pem")
self.srv_crypto.start()
# start a server without crypto
self.srv_no_crypto = Server()
self.uri_no_crypto = 'opc.tcp://localhost:%d' % port_num2
self.srv_no_crypto.set_endpoint(self.uri_no_crypto)
self.srv_no_crypto.start()
@classmethod
def tearDownClass(self):
# stop the server
self.srv_no_crypto.stop()
self.srv_crypto.stop()
def test_nocrypto(self):
clt = Client(self.uri_no_crypto)
clt.connect()
try:
clt.get_objects_node().get_children()
finally:
clt.disconnect()
def test_nocrypto_feil(self):
clt = Client(self.uri_no_crypto)
with self.assertRaises(ua.UaError):
clt.set_security_string("Basic256,Sign,examples/certificate-example.der,examples/private-key-example.pem")
def test_basic256(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string("Basic256,Sign,examples/certificate-example.der,examples/private-key-example.pem")
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string("Basic256,SignAndEncrypt,examples/certificate-example.der,examples/private-key-example.pem")
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic128Rsa15(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string("Basic128Rsa15,Sign,examples/certificate-example.der,examples/private-key-example.pem")
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic128Rsa15_encrypt(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string("Basic128Rsa15,SignAndEncrypt,examples/certificate-example.der,examples/private-key-example.pem")
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt_success(self):
clt = Client(self.uri_crypto)
try:
clt.set_security(security_policies.SecurityPolicyBasic256,
'examples/certificate-example.der',
'examples/private-key-example.pem',
None,
ua.MessageSecurityMode.SignAndEncrypt
)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt_feil(self):
# FIXME: how to make it feil???
clt = Client(self.uri_crypto)
with self.assertRaises(ua.UaError):
clt.set_security(security_policies.SecurityPolicyBasic256,
'examples/certificate-example.der',
'examples/private-key-example.pem',
None,
ua.MessageSecurityMode.None_
)
class TestCryptoConnect(unittest.TestCase):
'''
Test connectino with a server supporting crypto
'''
@classmethod
def setUpClass(self):
# start our own server
self.srv_crypto = Server()
self.uri_crypto = 'opc.tcp://localhost:%d' % port_num1
self.srv_crypto.set_endpoint(self.uri_crypto)
# load server certificate and private key. This enables endpoints
# with signing and encryption.
self.srv_crypto.load_certificate("examples/certificate-example.der")
self.srv_crypto.load_private_key("examples/private-key-example.pem")
self.srv_crypto.start()
# start a server without crypto
self.srv_no_crypto = Server()
self.uri_no_crypto = 'opc.tcp://localhost:%d' % port_num2
self.srv_no_crypto.set_endpoint(self.uri_no_crypto)
self.srv_no_crypto.start()
@classmethod
def tearDownClass(self):
# stop the server
self.srv_no_crypto.stop()
self.srv_crypto.stop()
def test_nocrypto(self):
clt = Client(self.uri_no_crypto)
clt.connect()
try:
clt.get_objects_node().get_children()
finally:
clt.disconnect()
def test_nocrypto_feil(self):
clt = Client(self.uri_no_crypto)
with self.assertRaises(ua.UaError):
clt.set_security_string(
"Basic256,Sign,examples/certificate-example.der,examples/private-key-example.pem"
)
def test_basic256(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string(
"Basic256,Sign,examples/certificate-example.der,examples/private-key-example.pem"
)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string(
"Basic256,SignAndEncrypt,examples/certificate-example.der,examples/private-key-example.pem"
)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic128Rsa15(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string(
"Basic128Rsa15,Sign,examples/certificate-example.der,examples/private-key-example.pem"
)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic128Rsa15_encrypt(self):
clt = Client(self.uri_crypto)
try:
clt.set_security_string(
"Basic128Rsa15,SignAndEncrypt,examples/certificate-example.der,examples/private-key-example.pem"
)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt_success(self):
clt = Client(self.uri_crypto)
try:
clt.set_security(security_policies.SecurityPolicyBasic256,
'examples/certificate-example.der',
'examples/private-key-example.pem', None,
ua.MessageSecurityMode.SignAndEncrypt)
clt.connect()
self.assertTrue(clt.get_objects_node().get_children())
finally:
clt.disconnect()
def test_basic256_encrypt_feil(self):
# FIXME: how to make it feil???
clt = Client(self.uri_crypto)
with self.assertRaises(ua.UaError):
clt.set_security(security_policies.SecurityPolicyBasic256,
'examples/certificate-example.der',
'examples/private-key-example.pem', None,
ua.MessageSecurityMode.None_)
def uaserver():
parser = argparse.ArgumentParser(
description=
"Run an example OPC-UA server. By importing xml definition and using uawrite command line, it is even possible to expose real data using this server"
)
# we setup a server, this is a bit different from other tool so we do not reuse common arguments
parser.add_argument(
"-u",
"--url",
help="URL of OPC UA server, default is opc.tcp://0.0.0.0:4840",
default='opc.tcp://0.0.0.0:4840',
metavar="URL")
parser.add_argument(
"-v",
"--verbose",
dest="loglevel",
choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
default='WARNING',
help="Set log level")
parser.add_argument(
"-x",
"--xml",
metavar="XML_FILE",
help="Populate address space with nodes defined in XML")
parser.add_argument("-p",
"--populate",
action="store_true",
help="Populate address space with some sample nodes")
parser.add_argument(
"-c",
"--disable-clock",
action="store_true",
help=
"Disable clock, to avoid seeing many write if debugging an application"
)
parser.add_argument(
"-s",
"--shell",
action="store_true",
help="Start python shell instead of randomly changing node values")
parser.add_argument("--certificate", help="set server certificate")
parser.add_argument("--private_key", help="set server private key")
args = parser.parse_args()
logging.basicConfig(format="%(levelname)s: %(message)s",
level=getattr(logging, args.loglevel))
server = Server()
server.set_endpoint(args.url)
if args.certificate:
server.load_certificate(args.certificate)
if args.private_key:
server.load_private_key(args.private_key)
server.disable_clock(args.disable_clock)
server.set_server_name("FreeOpcUa Example Server")
if args.xml:
server.import_xml(args.xml)
if args.populate:
@uamethod
def multiply(parent, x, y):
print("multiply method call with parameters: ", x, y)
return x * y
uri = "http://examples.freeopcua.github.io"
idx = server.register_namespace(uri)
objects = server.get_objects_node()
myobj = objects.add_object(idx, "MyObject")
mywritablevar = myobj.add_variable(idx, "MyWritableVariable", 6.7)
mywritablevar.set_writable(
) # Set MyVariable to be writable by clients
myvar = myobj.add_variable(idx, "MyVariable", 6.7)
myarrayvar = myobj.add_variable(idx, "MyVarArray", [6.7, 7.9])
myprop = myobj.add_property(idx, "MyProperty", "I am a property")
mymethod = myobj.add_method(
idx, "MyMethod", multiply,
[ua.VariantType.Double, ua.VariantType.Int64],
[ua.VariantType.Double])
server.start()
try:
if args.shell:
embed()
elif args.populate:
count = 0
while True:
time.sleep(1)
myvar.set_value(math.sin(count / 10))
myarrayvar.set_value(
[math.sin(count / 10),
math.sin(count / 100)])
count += 1
else:
while True:
time.sleep(1)
finally:
server.stop()
sys.exit(0)
sys.stdout = MyLogger(logger, logging.INFO)
if __name__ == "__main__":
#Creamos una instancia del servidor OPC UA
server = Server()
# Establecemos la comunicación de nuestro servidor opc ua
# load server certificate and private key. This enables endpoints
#Cargamos el certificado del servidor y la clave privada
#esto activa la comunicación con firma y cifrado.
if len(sys.argv) == 2:
server.set_endpoint("opc.tcp://%s" % sys.argv[1] )
server.load_certificate("certificate-example.der")
server.load_private_key("private-key-example.pem")
elif len(sys.argv) == 3:
server.set_endpoint("opc.tcp://%s" % sys.argv[1] )
server.load_certificate("%s/certificate-example.der" % sys.argv[2])
server.load_private_key("%s/private-key-example.pem" % sys.argv[2])
else:
a = len(sys.argv)
print ("Numero de argumentos inexperado: %s" %a)
print "opcua_server.py ip:puerto (rutacertificado)"
sys.exit(1)
# Declaración del espacio de nombres (no necesario)
uri = "SERVIDOR OPC-UA - ARDUINO:FreeOpcUa:python-opcua"
idx = server.register_namespace(uri)
# Cargamos los objetos
objects = server.get_objects_node()