chainqueue/chainqueue/state.py

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2.1 KiB
Python
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# standard imports
import logging
# external imports
import shep.persist
logg = logging.getLogger(__name__)
class Verify:
def verify(self, state_store, from_state, to_state):
to_state_name = state_store.name(to_state)
m = None
try:
m = getattr(self, 'verify_' + to_state_name)
except AttributeError:
logg.debug('foo {}'.format(to_state_name))
return None
r = m(state_store, from_state)
if r != None:
from_state_name = state_store.name(from_state)
r = '{} -> {}: {}'.format(from_state_name, to_state_name, r)
return r
def verify_INSUFFICIENT_FUNDS(self, state_store, from_state):
if from_state & state_store.FINAL:
return 'already finalized'
if from_state & state_store.INSUFFICIENT_FUNDS:
return 'already in network'
class Status(shep.persist.PersistedState):
def __init__(self, store_factory):
verify = Verify().verify
self.set_default_state('PENDING')
super(Status, self).__init__(store_factory, 12, verifier=verify)
self.add('QUEUED')
self.add('RESERVED')
self.add('IN_NETWORK')
self.add('DEFERRED')
self.add('INSUFFICIENT_FUNDS')
self.add('LOCAL_ERROR')
self.add('NODE_ERROR')
self.add('NETWORK_ERROR')
self.add('UNKNOWN_ERROR')
self.add('FINAL')
self.add('OBSOLETE')
self.add('MANUAL')
self.alias('SENDFAIL', self.DEFERRED | self.LOCAL_ERROR)
self.alias('RETRY', self.DEFERRED | self.QUEUED)
self.alias('OBSOLETED', self.OBSOLETE | self.IN_NETWORK)
self.alias('FUBAR', self.FINAL | self.UNKNOWN_ERROR)
self.alias('CANCELLED', self.IN_NETWORK | self.FINAL | self.OBSOLETE)
self.alias('OVERRIDDEN', self.FINAL | self.OBSOLETE | self.MANUAL)
self.alias('REJECTED', self.NODE_ERROR | self.FINAL)
self.alias('REVERTED', self.IN_NETWORK | self.FINAL, self.NETWORK_ERROR)
self.alias('SUCCESS', self.IN_NETWORK | self.FINAL)