self.state = 'error'
self.result = traceback.format_exc()
raise
finally:
self.time_stop = datetime.utcnow()
session(self).flush(self)
def join(self, poll_interval=0.1):
'''Wait until this task is either complete or errors out,
then return the result.'''
while self.state not in ('complete', 'error'):
time.sleep(poll_interval)
self.query.find(dict(_id=self._id), refresh=True).first()
result = self.result
self.query.delete()
return result
@classmethod
def list(cls, state='ready'):
'''Print all tasks of a certain status to sys.stdout. Used for
debugging.'''
q = cls.query.find(dict(state=state))
lines = map(repr, q)
return '\n'.join(lines)
odm_session.mapper(TaskObject, TaskDoc)
from ming.odm import ForeignIdProperty, RelationProperty
from lesson_2_0 import model as M
sess = ThreadLocalODMSession(M.sess)
class Forum(object):
pass
class Thread(object):
pass
class Post(object):
pass
sess.mapper(Forum, M.Forum, properties=dict(
threads=RelationProperty('Thread')))
sess.mapper(Thread, M.Thread, properties=dict(
forum_id=ForeignIdProperty('Forum'),
forum=RelationProperty('Forum'),
posts=RelationProperty('Post')))
sess.mapper(Post, M.Post, properties=dict(
forum_id=ForeignIdProperty('Forum'),
thread_id=ForeignIdProperty('Thread'),
forum=RelationProperty('Forum'),
thread=RelationProperty('Thread')))
Mapper.compile_all()
class Product(object):
pass
class Forum(object):
pass
class Thread(object):
pass
class Post(object):
pass
sess.mapper(Forum,
M.Forum,
properties=dict(threads=RelationProperty('Thread')))
sess.mapper(Thread,
M.Thread,
properties=dict(forum_id=ForeignIdProperty('Forum'),
forum=RelationProperty('Forum'),
posts=RelationProperty('Post')))
sess.mapper(Post,
M.Post,
properties=dict(forum_id=ForeignIdProperty('Forum'),
thread_id=ForeignIdProperty('Thread'),
forum=RelationProperty('Forum'),
thread=RelationProperty('Thread')))
Mapper.compile_all()
