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#
# Bank client.
#
# The client searches the two banks and performs a set of operations.
# (the banks are searched simply by listing a namespace prefix path)
#
from __future__ import print_function
import Pyro4.naming
# A bank client.
class client(object):
def __init__(self, name):
self.name = name
def doBusiness(self, bank):
print("\n*** %s is doing business with %s:" % (self.name, bank.name()))
print("Creating account")
try:
bank.createAccount(self.name)
except ValueError as x:
print("Failed: %s" % x)
print("Removing account and trying again")
bank.deleteAccount(self.name)
bank.createAccount(self.name)
print("Deposit money")
bank.deposit(self.name, 200.00)
print("Deposit money")
bank.deposit(self.name, 500.75)
print("Balance=%.2f" % bank.balance(self.name))
print("Withdraw money")
bank.withdraw(self.name, 400.00)
print("Withdraw money (overdraw)")
try:
bank.withdraw(self.name, 400.00)
except ValueError as x:
print("Failed: %s" % x)
print("End balance=%.2f" % bank.balance(self.name))
print("Withdraw money from non-existing account")
try:
bank.withdraw('GOD', 2222.22)
print("!!! Succeeded?!? That is an error")
except KeyError as x:
print("Failed as expected: %s" % x)
print("Deleting non-existing account")
try:
bank.deleteAccount('GOD')
print("!!! Succeeded?!? That is an error")
except KeyError as x:
print("Failed as expected: %s" % x)
ns = Pyro4.naming.locateNS()
# list the available banks by looking in the NS for the given prefix path
banknames = [name for name in ns.list(prefix="example.banks.")]
if not banknames:
raise RuntimeError('There are no banks to do business with!')
banks = [] # list of banks (proxies)
print()
for name in banknames:
print("Contacting bank: %s" % name)
uri = ns.lookup(name)
banks.append(Pyro4.core.Proxy(uri))
# Different clients that do business with all banks
irmen = client('Irmen')
suzy = client('Suzy')
for bank in banks:
irmen.doBusiness(bank)
suzy.doBusiness(bank)
# List all accounts
print()
for bank in banks:
print("The accounts in the %s:" % bank.name())
accounts = bank.allAccounts()
for name in accounts.keys():
print(" %s : %.2f" % (name, accounts[name]))
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