mirror of https://github.com/gsi-upm/soil
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
3.4 KiB
Python
124 lines
3.4 KiB
Python
import nxsim
|
|
from collections import OrderedDict
|
|
from copy import deepcopy
|
|
import json
|
|
|
|
from functools import wraps
|
|
|
|
|
|
class BaseAgent(nxsim.BaseAgent):
|
|
"""
|
|
A special simpy BaseAgent that keeps track of its state history.
|
|
"""
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
self._history = OrderedDict()
|
|
self._neighbors = None
|
|
super().__init__(*args, **kwargs)
|
|
self._history[None] = deepcopy(self.state)
|
|
|
|
@property
|
|
def now(self):
|
|
try:
|
|
return self.env.now
|
|
except AttributeError:
|
|
# No environment
|
|
return None
|
|
|
|
def run(self):
|
|
while True:
|
|
res = self.step()
|
|
self._history[self.env.now] = deepcopy(self.state)
|
|
yield res or self.env.timeout(self.env.interval)
|
|
|
|
def step(self):
|
|
pass
|
|
|
|
def to_json(self):
|
|
return json.dumps(self._history)
|
|
|
|
class NetworkAgent(BaseAgent, nxsim.BaseNetworkAgent):
|
|
|
|
def count_agents(self, state_id=None, limit_neighbors=False):
|
|
if limit_neighbors:
|
|
agents = self.global_topology.neighbors(self.id)
|
|
else:
|
|
agents = self.global_topology.nodes()
|
|
count = 0
|
|
for agent in agents:
|
|
if state_id and state_id != self.global_topology.node[agent]['agent'].state['id']:
|
|
continue
|
|
count += 1
|
|
return count
|
|
|
|
def count_neighboring_agents(self, state_id=None):
|
|
return self.count_agents(state_id, limit_neighbors=True)
|
|
|
|
|
|
def state(func):
|
|
|
|
@wraps(func)
|
|
def func_wrapper(self):
|
|
when = None
|
|
next_state = func(self)
|
|
try:
|
|
next_state, when = next_state
|
|
except TypeError:
|
|
pass
|
|
if next_state:
|
|
try:
|
|
self.state['id'] = next_state.id
|
|
except AttributeError:
|
|
raise NotImplemented('State id %s is not valid.' % next_state)
|
|
return when
|
|
|
|
func_wrapper.id = func.__name__
|
|
func_wrapper.is_default = False
|
|
return func_wrapper
|
|
|
|
|
|
def default_state(func):
|
|
func.is_default = True
|
|
return func
|
|
|
|
|
|
class MetaFSM(type):
|
|
def __init__(cls, name, bases, nmspc):
|
|
super(MetaFSM, cls).__init__(name, bases, nmspc)
|
|
states = {}
|
|
# Re-use states from inherited classes
|
|
default_state = None
|
|
for i in bases:
|
|
if isinstance(i, MetaFSM):
|
|
for state_id, state in i.states.items():
|
|
if state.is_default:
|
|
default_state = state
|
|
states[state_id] = state
|
|
|
|
# Add new states
|
|
for name, func in nmspc.items():
|
|
if hasattr(func, 'id'):
|
|
if func.is_default:
|
|
default_state = func
|
|
states[func.id] = func
|
|
cls.default_state = default_state
|
|
cls.states = states
|
|
|
|
|
|
class FSM(BaseAgent, metaclass=MetaFSM):
|
|
def __init__(self, *args, **kwargs):
|
|
super(FSM, self).__init__(*args, **kwargs)
|
|
if 'id' not in self.state:
|
|
self.state['id'] = self.default_state.id
|
|
|
|
def step(self):
|
|
if 'id' in self.state:
|
|
next_state = self.state['id']
|
|
elif self.default_state:
|
|
next_state = self.default_state.id
|
|
else:
|
|
raise Exception('{} has no valid state id or default state'.format(self))
|
|
if next_state not in self.states:
|
|
raise Exception('{} is not a valid id for {}'.format(next_state, self))
|
|
self.states[next_state](self)
|