class Task(Action):
"""
Use deferred to detach action execution from
from caller, allowing registration by caller
to task for getting results asynchronously.
"""
def __init__(self, *args, **kw):
self.deferred = Deferred()
super(Task, self).__init__(*args, **kw)
def get_deferred(self):
return self.deferred
def invoke(self, *args, **kw):
try:
result = super(Task, self).invoke(*args, **kw)
except Exception, error:
msglog.log('broadway', msglog.types.WARN,
"Task '%s' execution failed." % self)
msglog.exception(prefix="handled")
self.deferred.failed(error)
else:
def invoke(*args, **kw):
deferred = Deferred()
try:
result = invocable(*args, **kw)
except Exception, error:
deferred.failed(error)
def invoke(*args, **kw):
deferred = Deferred()
try:
result = invocable(*args, **kw)
except Exception, error:
deferred.failed(error)
