def wrapper(self):
try:
client = Client(URL)
client.connect()
func(self, client)
finally:
client.disconnect()
class HelloClient:
def __init__(self, endpoint):
self.client = Client(endpoint)
def __enter__(self):
self.client.connect()
return self.client
def __exit__(self, exc_type, exc_val, exc_tb):
self.client.disconnect()
async def test_context_manager(server):
"""Context manager calls connect() and disconnect()"""
state = [0]
async def increment_state(*args, **kwargs):
state[0] += 1
# create client and replace instance methods with dummy methods
client = Client('opc.tcp://dummy_address:10000')
client.connect = increment_state.__get__(client)
client.disconnect = increment_state.__get__(client)
assert state[0] == 0
async with client:
# test if client connected
assert state[0] == 1
# test if client disconnected
assert state[0] == 2
import sys
sys.path.insert(0, "..")
import time
import logging
from IPython import embed
from asyncua import Client
from asyncua import ua
if __name__ == "__main__":
logging.basicConfig(level=logging.WARN)
client = Client("opc.tcp://asyncua.demo-this.com:51210/UA/SampleServer")
try:
client.connect()
root = client.get_root_node()
objects = client.get_objects_node()
struct = client.get_node("ns=2;i=10239")
struct_array = client.get_node("ns=2;i=10323")
before = struct.read_value()
before_array = struct_array.read_value()
client.load_type_definitions(
) # scan server for custom structures and import them
after = struct.read_value()
after_array = struct_array.read_value()
embed()
finally:
client.disconnect()
def FINISH_test_connect_basic256(self):
c = Client(URL)
c.set_security_string("basic256,sign,XXXX")
c.connect()
c.disconnect()
def test_connect_anonymous(self):
c = Client(URL)
c.connect()
c.disconnect()
