opcua.server.address_space.AddressSpace Class Reference

Inheritance diagram for opcua.server.address_space.AddressSpace:

Public Member Functions
def	__contains__ (self, nodeid)
def	__delitem__ (self, nodeid)
def	__getitem__ (self, nodeid)
def	__init__ (self)
def	__setitem__ (self, nodeid, value)
def	add_datachange_callback (self, nodeid, attr, callback)
def	add_method_callback (self, methodid, callback)
def	delete_datachange_callback (self, handle)
def	dump (self, path)
def	empty (self)
def	generate_nodeid (self, idx=None)
def	get_attribute_value (self, nodeid, attr)
def	keys (self)
def	load (self, path)
def	load_aspace_shelf (self, path)
def	make_aspace_shelf (self, path)
def	set_attribute_value (self, nodeid, attr, value)

Public Attributes
	cache
	logger
	source

Private Attributes
	_datachange_callback_counter
	_default_idx
	_handle_to_attribute_map
	_lock
	_nodeid_counter
	_nodes

Detailed Description

The address space object stores all the nodes of the OPC-UA server
and helper methods.
The methods are thread safe

Definition at line 434 of file address_space.py.

Constructor & Destructor Documentation

def opcua.server.address_space.AddressSpace.__init__

(

self

)

Definition at line 442 of file address_space.py.

Member Function Documentation

def opcua.server.address_space.AddressSpace.__contains__	(		self,
			nodeid
	)

Definition at line 460 of file address_space.py.

def opcua.server.address_space.AddressSpace.__delitem__	(		self,
			nodeid
	)

Definition at line 464 of file address_space.py.

def opcua.server.address_space.AddressSpace.__getitem__	(		self,
			nodeid
	)

Definition at line 451 of file address_space.py.

def opcua.server.address_space.AddressSpace.__setitem__	(		self,
			nodeid,
			value
	)

Definition at line 456 of file address_space.py.

def opcua.server.address_space.AddressSpace.add_datachange_callback	(		self,
			nodeid,
			attr,
			callback
	)

Definition at line 620 of file address_space.py.

def opcua.server.address_space.AddressSpace.add_method_callback	(		self,
			methodid,
			callback
	)

Definition at line 640 of file address_space.py.

def opcua.server.address_space.AddressSpace.delete_datachange_callback	(		self,
			handle
	)

Definition at line 635 of file address_space.py.

def opcua.server.address_space.AddressSpace.dump	(		self,
			path
	)

Dump address space as binary to file; note that server must be stopped for this method to work
DO NOT DUMP AN ADDRESS SPACE WHICH IS USING A SHELF (load_aspace_shelf), ONLY CACHED NODES WILL GET DUMPED!

Definition at line 494 of file address_space.py.

def opcua.server.address_space.AddressSpace.empty

(

self

)

Delete all nodes in address space

Definition at line 487 of file address_space.py.

def opcua.server.address_space.AddressSpace.generate_nodeid	(		self,
			idx = None
	)

Definition at line 468 of file address_space.py.

def opcua.server.address_space.AddressSpace.get_attribute_value	(		self,
			nodeid,
			attr
	)

Definition at line 575 of file address_space.py.

def opcua.server.address_space.AddressSpace.keys

(

self

)

Definition at line 483 of file address_space.py.

def opcua.server.address_space.AddressSpace.load	(		self,
			path
	)

Load address space from a binary file, overwriting everything in the current address space

Definition at line 508 of file address_space.py.

def opcua.server.address_space.AddressSpace.load_aspace_shelf	(		self,
			path
	)

Load the standard address space nodes from a python shelve via LazyLoadingDict as needed.
The dump() method can no longer be used if the address space is being loaded from a shelf

Note: Intended for slow devices, such as Raspberry Pi, to greatly improve start up time

Definition at line 529 of file address_space.py.

def opcua.server.address_space.AddressSpace.make_aspace_shelf	(		self,
			path
	)

Make a shelf for containing the nodes from the standard address space; this is typically only done on first
start of the server. Subsequent server starts will load the shelf, nodes are then moved to a cache
by the LazyLoadingDict class when they are accessed. Saving data back to the shelf
is currently NOT supported, it is only used for the default OPC UA standard address space

Note: Intended for slow devices, such as Raspberry Pi, to greatly improve start up time

Definition at line 515 of file address_space.py.

def opcua.server.address_space.AddressSpace.set_attribute_value	(		self,
			nodeid,
			attr,
			value
	)

Definition at line 592 of file address_space.py.

Member Data Documentation

opcua.server.address_space.AddressSpace._datachange_callback_counter

private

Definition at line 446 of file address_space.py.

opcua.server.address_space.AddressSpace._default_idx

private

Definition at line 448 of file address_space.py.

opcua.server.address_space.AddressSpace._handle_to_attribute_map

private

Definition at line 447 of file address_space.py.

opcua.server.address_space.AddressSpace._lock

private

Definition at line 445 of file address_space.py.

opcua.server.address_space.AddressSpace._nodeid_counter

private

Definition at line 449 of file address_space.py.

opcua.server.address_space.AddressSpace._nodes

private

Definition at line 444 of file address_space.py.

opcua.server.address_space.AddressSpace.cache

Definition at line 544 of file address_space.py.

opcua.server.address_space.AddressSpace.logger

Definition at line 443 of file address_space.py.

opcua.server.address_space.AddressSpace.source

Definition at line 543 of file address_space.py.

---

The documentation for this class was generated from the following file:

• address_space.py