class Machine(Base):
'''
The machine connects the nodes and manages the addition
and removal of nodes to the network.
'''
def __init__(self, name=None):
self.log_color = 'red'
self.name = name or random_string(8)
self.events = Events()
events.e = self.events
self.nodes = Nodes()
self.register = Register(machine=self, events=self.events)
def set_listeners(self):
'''
provide machine event listeners
'''
self.events.listen('add_conditions')
def activate_node(self, node):
_n = node.integrate(self)
self.nodes.append(_n)
self.log('Integrating node', _n)
'''
Loop an iterable to add Conditiond into the
network for a node
'''
# Write node into register.
# n=node.get_name()
# add weak reference in register.
self.register.add_node(_n)
_n.react(self)
return _n
def render_nodes(self, nodes):
self.log('Add nodes to network')
for node in nodes:
n = node
# Create the node is the element is not an instance
if inspect.isclass(node):
n = node()
self.activate_node(n)
def start(self, nodes=None):
if nodes is not None:
self.render_nodes(nodes)
print '\n--- Run ---\n'
self.started(nodes)
def started(self, nodes):
'''
Override for easy start reference. Passed are the initial
nodes provides to the machine.
'''
pass
def __str__(self):
return '%s "%s"' % (self.__class__.__name__, self.name, )
