def do_txn(self, args):
"""
txn -- Command to create IntegerKey transactions
txn <expr> [ && <expr> ]*
"""
txn = integer_key.IntegerKeyTransaction()
# pylint: disable=line-too-long
pattern = re.compile(
r"^\s*(?P<name>[a-zA-Z0-9]+)\s*(?P<verb>[+-]?=)\s*(?P<value>[0-9]+)\s*$"
) # noqa
expressions = args.split('&&')
for expression in expressions:
match = pattern.match(expression)
if not match:
print 'unable to parse the transaction; {0}'.format(expression)
return
update = integer_key.Update()
update.Verb = self._TxnVerbMap[match.group('verb')]
update.Name = match.group('name')
update.Value = long(match.group('value'))
txn.Updates.append(update)
txn.sign_from_node(self.LocalNode)
msg = integer_key.IntegerKeyTransactionMessage()
msg.Transaction = txn
self.sign_and_post(msg)
def dec(self, key, value):
"""
"""
update = integer_key.Update({
"Verb": "dec",
"Name": key,
"Value": value
})
return self._sendtxn(update)
def set(self, key, value, txndep=None, postmsg=True):
"""Creates an update object which sets the value associated with a key.
Args:
key (str): The key to set.
value (int): The value to set for key.
"""
update = integer_key.Update({
"Verb": "set",
"Name": key,
"Value": value
})
return self._sendtxn(update, txndep, postmsg)
def dec(self, key, value, txndep=None, postmsg=True):
"""Creates an update object which decrements the value associated with
a key.
Args:
key (str): The key to set.
value (int): The value by which to decrement the current
value associated with key.
"""
update = integer_key.Update({
"Verb": "dec",
"Name": key,
"Value": value
})
return self._sendtxn(update, txndep, postmsg)
def inc(self, key, value):
"""Creates an update object which increments the value associated with
a key.
Args:
key (str): The key to set.
value (int): The value by which to increment the current
value associated with key.
"""
update = integer_key.Update({
"Verb": "inc",
"Name": key,
"Value": value
})
return self._sendtxn(update)
