Add OPC-UA simple synchronous client extension.
This extension uses python-opcua to growse server nodes, and generates runtime C code that use open62541.
- python-opcua must be available in python path (i.e. "import opcua" must succeed). Can be installed from pypi with "python2 -m pip install opcua --user" .
- at build time, open62541 is expected to be build in "open62541" directory, aside "beremiz" directory.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# See COPYING file for copyrights details.
from __future__ import absolute_import
from itertools import repeat, islice, chain
from connectors.SchemeEditor import SchemeEditor
model = [('host', _("Host:")),
('port', _("Port:"))]
# (scheme, model, secure)
models = [("LOCAL", [], False), ("PYRO", model, False), ("PYROS", model, True)]
Schemes = list(zip(*models)[0])
_PerSchemeConf = {sch: (mod, sec) for sch, mod, sec in models}
class PYRO_dialog(SchemeEditor):
def __init__(self, scheme, *args, **kwargs):
# ID selector is enabled only on PYROS (secure)
self.model, self.EnableIDSelector = _PerSchemeConf[scheme]
SchemeEditor.__init__(self, scheme, *args, **kwargs)
# pylint: disable=unused-variable
def SetLoc(self, loc):
hostport, ID = list(islice(chain(loc.split("#"), repeat("")), 2))
host, port = list(islice(chain(hostport.split(":"), repeat("")), 2))
self.SetFields(locals())
def GetLoc(self):
if self.model:
fields = self.GetFields()
template = "{host}"
if fields['port']:
template += ":{port}"
if self.EnableIDSelector:
if fields['ID']:
template += "#{ID}"
return template.format(**fields)
return ''