def inject(self, account_list, amount):
# first credit the trust account with the sufficient amount of quids
count = len(account_list)
total_amount = count * amount
self.account.credit(total_amount)
# self.inject_quids(total_amount)
self.__do_transactions(account_list, amount)
logger.info("Injected %d quids into %d accounts. Total: %d quids.", amount, count, total_amount)
def _calc_total_quids_in_network(self):
self.total_quids = 0
for list in self.all_members:
for i in list:
self.total_quids += i.get_account().get_balance()
logger.info("Total amount of quids in network: %d", self.total_quids)
def run(self):
while True:
day = self.sim.now()
logger.info("Simulation runs now day %d", day)
self.scenario.run(day)
# logger.info("Total quids in network: %d", total_quids_in_network.amount)
self._calc_total_quids_in_network()
yield hold, self, 1.0
def pay_employees(self, employees):
# pay wages of 10% in quids to employees
for employee in employees:
# timestamp
tstamp = datetime.now()
ta_amount = average_employee_wage
ta = Transaction(employee.get_account(), self.account, ta_amount, tstamp)
ta.commit()
total_paid = len(employees) * ta_amount
logger.info("Council paid 10%% of wages in quid to %d workers", len(employees))
logger.info("Council paid %d quids for wages in total.", total_paid)
def month(self, day):
logger.info("Simulation now runs in month: %d", self.month_count)
#The current scenario implies that for an initial period, businesses
#get some quids injected for an initial period, after which no injectio
#takes place anymore
if (self.month_count < quid_injection_business_period):
logger.info("Still in initial quids injection period for businesses --> Quids will be injected to businesses.")
self.network.trust.inject(self.network.businesses, increase_step_for_businesses)
#at the end of the month, the council pays its employees, partly in quids
self.network.council.pay_employees(self.network.employees);
#increase month count
self.month_count += 1
def create_network(self):
self.trust = LqnTrust(self.name + " Trust", self.sim)
self.council = LqnCouncil("Kilkenny County Council", self.sim)
self.sponsors.append(self.council)
for i in range(num_of_members):
self.members.append(LqnMember("Member-%d" % i, self.sim))
for k in range(num_of_employees):
self.employees.append(LqnCouncilEmployee("Employee-%d" % k, self.sim))
for n in range(num_of_businesses):
self.businesses.append(LqnBusiness("Business-%d" % n, self.sim))
logger.info("Initial network members created")
self.start()
def apply_policy(self, data_accessor, list, policy):
"""
Only the trust is allowed to apply the policy,
so it needs to be done in this object, not in
scenario or elsewhere.
"""
timestamp = datetime.now()
quids_level = 0
base = "Policy applied to all accounts."
ending = ""
for i in list:
for member in i:
quids_level += policy.apply(self.account, member.get_account(), data_accessor, timestamp)
if quids_level > 0:
ending = "Added %d quids in total.", quids_level
elif quids_level < 0:
ending = "Removed %d quids in total.", quids_level
else:
ending = "No changes in total quids."
msg = base, ending
logger.info(msg)
def start(self):
random.seed(random_seed) # seeds the random number generator
self.trust.create_initial_quids()
logger.info("Initial quids supplied. Network can now start")
self._calc_total_quids_in_network()
"""
At the end of the day, in order to calculate mean average
balances, we need to store the current balance per account
"""
for list in self.all_members:
for member in list:
account = member.get_account()
account.account_history.record_daily_balance(account.get_balance())
# Run the simulation
sim = Simulation()
sim.initialize()
logger.info("*************************************************")
logger.info("The Liquidity Network Simulation - version 0.1.1")
logger.info("*************************************************")
logger.info("Starting Simulation.")
logger.info("Current time is %d", sim.now())
network = LqnNetwork("Kilkenny LQN", sim)
network.create_network()
sim.activate(network, network.run(), at=0.0)
total_quids_in_network = Level(
name="total_quids_in_network",
unitName="quids",
capacity="unbounded",
initialBuffered=0,
monitored=True,