def _run_task(self, key, version, task_class, module_search_path, args={},
subtask_key=None, workunit=None, main_worker=None, task_id=None,
callback=None):
"""
Runs a task on this worker
@param key - key identifying task to run
@param version - version of task to run.
@param task_class - class instance of the task
@param module_search_path - ????????????????
@param args - kwargs that will be passed to the Task.start()
@param subtask_key - key identifying subtask to run
@param workunit - key to data, or data to processed
@param main_worker - key for the main worker of this task
@param task_id - ID of the task instance
"""
logger.info('RunTask: key=%s args=%s sub=%s w=%s main=%s' \
% (key, '--', subtask_key, workunit, main_worker))
# Register task with worker
with self._lock:
if not key:
return "FAILURE: NO TASK KEY SPECIFIED"
# save what worker is running
self._task = key
self._subtask = subtask_key
# If args is a string, it may be unicode instead of str. This is a
# Django issue. Try to make everybody happy by treating the string as
# JSON.
# This is almost certainly the wrong thing to do, but it's historical.
try:
clean_args = dict(
(str(k), v) for k, v in
simplejson.loads(args).iteritems()
)
except:
clean_args = args
# only create a new task instance if this is the root task. Otherwise
# subtasks will be created within the structure of the task.
if not self._task_instance:
self._task_instance = task_class()
self._task_instance.parent = self
if not subtask_key:
self._task_instance.logger = get_task_logger(self.worker_key, \
task_id)
# start the task. If this is actually a subtask, then the task is
# responsible for starting the subtask instead of the main task
return self._task_instance.start(clean_args, subtask_key, workunit,
task_id, \
callback=callback,
callback_args = {'workunit':workunit},
errback=callback,
errback_args={'workunit':workunit, 'failed':True})
def _run_task(self, key, version, task_class, module_search_path, args={},
subtask_key=None, workunit=None, main_worker=None, task_id=None,
callback=None):
"""
Runs a task on this worker
@param key - key identifying task to run
@param version - version of task to run.
@param task_class - class instance of the task
@param module_search_path - ????????????????
@param args - kwargs that will be passed to the Task.start()
@param subtask_key - key identifying subtask to run
@param workunit - key to data, or data to processed
@param main_worker - key for the main worker of this task
@param task_id - ID of the task instance
"""
logger.info('RunTask: key=%s args=%s sub=%s w=%s main=%s' \
% (key, '--', subtask_key, workunit, main_worker))
# Register task with worker
with self._lock:
if not key:
return "FAILURE: NO TASK KEY SPECIFIED"
# save what worker is running
self.__task = key
self.__subtask = subtask_key
# process args to make sure they are no longer unicode. This is an
# issue with the args coming through the django frontend.
clean_args = {}
args = simplejson.loads(args)
if args:
for arg_key, arg_value in args.items():
clean_args[arg_key.__str__()] = arg_value
# only create a new task instance if this is the root task. Otherwise
# subtasks will be created within the structure of the task.
if not self.__task_instance:
self.__task_instance = task_class()
self.__task_instance.parent = self
if not subtask_key:
self.__task_instance.logger = get_task_logger(self.worker_key, \
task_id)
# start the task. If this is actually a subtask, then the task is
# responsible for starting the subtask instead of the main task
return self.__task_instance.start(clean_args, subtask_key, workunit,
task_id, \
callback=callback,
callback_args = {'workunit':workunit},
errback=callback,
errback_args={'workunit':workunit, 'failed':True})
