def _instantiate_node(server, parentid, rdesc, nodeid, bname, recursive=True):
"""
instantiate a node type under parent
"""
node_type = Node(server, rdesc.NodeId)
refs = node_type.get_referenced_nodes(refs=ua.ObjectIds.HasModellingRule)
# skip optional elements
if len(refs) == 1 and refs[0].nodeid == ua.NodeId(
ua.ObjectIds.ModellingRule_Optional):
return []
addnode = ua.AddNodesItem()
addnode.RequestedNewNodeId = nodeid
addnode.BrowseName = bname
addnode.ParentNodeId = parentid
addnode.ReferenceTypeId = rdesc.ReferenceTypeId
addnode.TypeDefinition = rdesc.TypeDefinition
if rdesc.NodeClass in (ua.NodeClass.Object, ua.NodeClass.ObjectType):
addnode.NodeClass = ua.NodeClass.Object
_read_and_copy_attrs(node_type, ua.ObjectAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Variable, ua.NodeClass.VariableType):
addnode.NodeClass = ua.NodeClass.Variable
_read_and_copy_attrs(node_type, ua.VariableAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Method, ):
addnode.NodeClass = ua.NodeClass.Method
_read_and_copy_attrs(node_type, ua.MethodAttributes(), addnode)
else:
print("Instantiate: Node class not supported: ", rdesc.NodeClass)
return
res = server.add_nodes([addnode])[0]
added_nodes = [res.AddedNodeId]
if recursive:
parents = ua_utils.get_node_supertypes(node_type, includeitself=True)
node = Node(server, res.AddedNodeId)
for parent in parents:
descs = parent.get_children_descriptions(includesubtypes=False)
for c_rdesc in descs:
# skip items that already exists, prefer the 'lowest' one in object hierarchy
if not ua_utils.is_child_present(node, c_rdesc.BrowseName):
nodeids = _instantiate_node(
server,
res.AddedNodeId,
c_rdesc,
nodeid=ua.NodeId(
namespaceidx=res.AddedNodeId.NamespaceIndex),
bname=c_rdesc.BrowseName)
added_nodes.extend(nodeids)
return added_nodes
def _instantiate_node(server, parentid, rdesc, nodeid, bname, dname=None, recursive=True):
"""
instantiate a node type under parent
"""
node_type = Node(server, rdesc.NodeId)
refs = node_type.get_referenced_nodes(refs=ua.ObjectIds.HasModellingRule)
# skip optional elements
if len(refs) == 1 and refs[0].nodeid == ua.NodeId(ua.ObjectIds.ModellingRule_Optional):
return []
addnode = ua.AddNodesItem()
addnode.RequestedNewNodeId = nodeid
addnode.BrowseName = bname
addnode.ParentNodeId = parentid
addnode.ReferenceTypeId = rdesc.ReferenceTypeId
addnode.TypeDefinition = rdesc.TypeDefinition
if rdesc.NodeClass in (ua.NodeClass.Object, ua.NodeClass.ObjectType):
addnode.NodeClass = ua.NodeClass.Object
_read_and_copy_attrs(node_type, ua.ObjectAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Variable, ua.NodeClass.VariableType):
addnode.NodeClass = ua.NodeClass.Variable
_read_and_copy_attrs(node_type, ua.VariableAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Method,):
addnode.NodeClass = ua.NodeClass.Method
_read_and_copy_attrs(node_type, ua.MethodAttributes(), addnode)
else:
logger.warning("Instantiate: Node class not supported: %s", rdesc.NodeClass)
return
if dname is not None:
addnode.NodeAttributes.DisplayName = dname
res = server.add_nodes([addnode])[0]
added_nodes = [res.AddedNodeId]
if recursive:
parents = ua_utils.get_node_supertypes(node_type, includeitself=True)
node = Node(server, res.AddedNodeId)
for parent in parents:
descs = parent.get_children_descriptions(includesubtypes=False)
for c_rdesc in descs:
# skip items that already exists, prefer the 'lowest' one in object hierarchy
if not ua_utils.is_child_present(node, c_rdesc.BrowseName):
# if root node being instantiated has a String NodeId, create the children with a String NodeId
if res.AddedNodeId.NodeIdType is ua.NodeIdType.String:
inst_nodeid = res.AddedNodeId.Identifier + "." + c_rdesc.BrowseName.Name
nodeids = _instantiate_node(server, res.AddedNodeId, c_rdesc, nodeid=ua.NodeId(identifier=inst_nodeid, namespaceidx=res.AddedNodeId.NamespaceIndex), bname=c_rdesc.BrowseName)
else:
nodeids = _instantiate_node(server, res.AddedNodeId, c_rdesc, nodeid=ua.NodeId(namespaceidx=res.AddedNodeId.NamespaceIndex), bname=c_rdesc.BrowseName)
added_nodes.extend(nodeids)
return added_nodes
def _instantiate_node(server, parentid, rdesc, nodeid, bname, recursive=True):
"""
instantiate a node type under parent
"""
addnode = ua.AddNodesItem()
addnode.RequestedNewNodeId = nodeid
addnode.BrowseName = bname
addnode.ParentNodeId = parentid
addnode.ReferenceTypeId = rdesc.ReferenceTypeId
addnode.TypeDefinition = rdesc.TypeDefinition
node_type = Node(server, rdesc.NodeId)
refs = node_type.get_referenced_nodes(refs=ua.ObjectIds.HasModellingRule)
# skip optional elements
if not(len(refs) == 1 and refs[0].nodeid == ua.NodeId(ua.ObjectIds.ModellingRule_Optional) ):
if rdesc.NodeClass in (ua.NodeClass.Object, ua.NodeClass.ObjectType):
addnode.NodeClass = ua.NodeClass.Object
_read_and_copy_attrs(node_type, ua.ObjectAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Variable, ua.NodeClass.VariableType):
addnode.NodeClass = ua.NodeClass.Variable
_read_and_copy_attrs(node_type, ua.VariableAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Method,):
addnode.NodeClass = ua.NodeClass.Method
_read_and_copy_attrs(node_type, ua.MethodAttributes(), addnode)
else:
print("Instantiate: Node class not supported: ", rdesc.NodeClass)
return
res = server.add_nodes([addnode])[0]
if recursive:
parents = ua_utils.get_node_supertypes(node_type, includeitself = True)
node = Node(server, res.AddedNodeId)
for parent in parents:
descs = parent.get_children_descriptions(includesubtypes=False)
for c_rdesc in descs:
# skip items that already exists, prefer the 'lowest' one in object hierarchy
if not ua_utils.is_child_present(node, c_rdesc.BrowseName):
_instantiate_node(server, res.AddedNodeId, c_rdesc, nodeid=ua.NodeId(namespaceidx=res.AddedNodeId.NamespaceIndex), bname=c_rdesc.BrowseName)
return Node(server, res.AddedNodeId)
else:
return None
def _instantiate_node(server,
node_type,
parentid,
rdesc,
nodeid,
bname,
dname=None,
recursive=True,
instantiate_optional=True):
"""
instantiate a node type under parent
"""
addnode = ua.AddNodesItem()
addnode.RequestedNewNodeId = nodeid
addnode.BrowseName = bname
addnode.ParentNodeId = parentid
addnode.ReferenceTypeId = rdesc.ReferenceTypeId
addnode.TypeDefinition = rdesc.TypeDefinition
if rdesc.NodeClass in (ua.NodeClass.Object, ua.NodeClass.ObjectType):
addnode.NodeClass = ua.NodeClass.Object
_read_and_copy_attrs(node_type, ua.ObjectAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Variable, ua.NodeClass.VariableType):
addnode.NodeClass = ua.NodeClass.Variable
_read_and_copy_attrs(node_type, ua.VariableAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.Method, ):
addnode.NodeClass = ua.NodeClass.Method
_read_and_copy_attrs(node_type, ua.MethodAttributes(), addnode)
elif rdesc.NodeClass in (ua.NodeClass.DataType, ):
addnode.NodeClass = ua.NodeClass.DataType
_read_and_copy_attrs(node_type, ua.DataTypeAttributes(), addnode)
else:
logger.error("Instantiate: Node class not supported: %s",
rdesc.NodeClass)
raise RuntimeError("Instantiate: Node class not supported")
return
if dname is not None:
addnode.NodeAttributes.DisplayName = dname
res = server.add_nodes([addnode])[0]
added_nodes = [res.AddedNodeId]
if recursive:
parents = ua_utils.get_node_supertypes(node_type, includeitself=True)
node = Node(server, res.AddedNodeId)
for parent in parents:
descs = parent.get_children_descriptions(includesubtypes=False)
for c_rdesc in descs:
# skip items that already exists, prefer the 'lowest' one in object hierarchy
if not ua_utils.is_child_present(node, c_rdesc.BrowseName):
c_node_type = Node(server, c_rdesc.NodeId)
refs = c_node_type.get_referenced_nodes(
refs=ua.ObjectIds.HasModellingRule)
if not refs:
# spec says to ignore nodes without modelling rules
logger.info(
"Instantiate: Skip node without modelling rule %s as part of %s",
c_rdesc.BrowseName, addnode.BrowseName)
continue
# exclude nodes with optional ModellingRule if requested
if not instantiate_optional and refs[0].nodeid == ua.NodeId(
ua.ObjectIds.ModellingRule_Optional):
logger.info(
"Instantiate: Skip optional node %s as part of %s",
c_rdesc.BrowseName, addnode.BrowseName)
continue
# if root node being instantiated has a String NodeId, create the children with a String NodeId
if res.AddedNodeId.NodeIdType is ua.NodeIdType.String:
inst_nodeid = res.AddedNodeId.Identifier + "." + c_rdesc.BrowseName.Name
nodeids = _instantiate_node(
server,
c_node_type,
res.AddedNodeId,
c_rdesc,
nodeid=ua.NodeId(
identifier=inst_nodeid,
namespaceidx=res.AddedNodeId.NamespaceIndex),
bname=c_rdesc.BrowseName)
else:
nodeids = _instantiate_node(
server,
c_node_type,
res.AddedNodeId,
c_rdesc,
nodeid=ua.NodeId(
namespaceidx=res.AddedNodeId.NamespaceIndex),
bname=c_rdesc.BrowseName)
added_nodes.extend(nodeids)
return added_nodes