def _default_executor_factory(self):
max_simultaneous_jobs = self._max_simultaneous_jobs
if max_simultaneous_jobs <= 0:
max_workers = tu.get_optimal_thread_count()
else:
max_workers = max_simultaneous_jobs
return futurist.ThreadPoolExecutor(max_workers=max_workers)
def start(self):
if self._create_executor:
if self._max_workers is not None:
max_workers = self._max_workers
else:
max_workers = threading_utils.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(max_workers)
def start(self):
if self._own_executor:
if self._max_workers is not None:
max_workers = self._max_workers
else:
max_workers = threading_utils.get_optimal_thread_count()
self._executor = self._create_executor(max_workers=max_workers)
def __init__(self,
exchange,
topic,
tasks,
executor=None,
threads_count=None,
url=None,
transport=None,
transport_options=None,
retry_options=None):
self._topic = topic
self._executor = executor
self._owns_executor = False
self._threads_count = -1
if self._executor is None:
if threads_count is not None:
self._threads_count = int(threads_count)
else:
self._threads_count = tu.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._owns_executor = True
self._endpoints = self._derive_endpoints(tasks)
self._exchange = exchange
self._server = server.Server(topic,
exchange,
self._executor,
self._endpoints,
url=url,
transport=transport,
transport_options=transport_options,
retry_options=retry_options)
def _default_executor_factory(self):
max_simultaneous_jobs = self._max_simultaneous_jobs
if max_simultaneous_jobs <= 0:
max_workers = tu.get_optimal_thread_count()
else:
max_workers = max_simultaneous_jobs
return futurist.ThreadPoolExecutor(max_workers=max_workers)
def __init__(self, exchange, topic, tasks, executor=None, **kwargs):
self._topic = topic
self._executor = executor
self._threads_count = kwargs.pop("threads_count", tu.get_optimal_thread_count())
if self._executor is None:
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._endpoints = self._derive_endpoints(tasks)
self._server = server.Server(topic, exchange, self._executor, self._endpoints, **kwargs)
class NonBlockingConductor(impl_executor.ExecutorConductor):
"""Non-blocking conductor that processes job(s) using a thread executor.
NOTE(harlowja): A custom executor factory can be provided via keyword
argument ``executor_factory``, if provided it will be
invoked at
:py:meth:`~taskflow.conductors.base.Conductor.run` time
with one positional argument (this conductor) and it must
return a compatible `executor`_ which can be used
to submit jobs to. If ``None`` is a provided a thread pool
backed executor is selected by default (it will have
an equivalent number of workers as this conductors
simultaneous job count).
.. _executor: https://docs.python.org/dev/library/\
concurrent.futures.html#executor-objects
"""
MAX_SIMULTANEOUS_JOBS = tu.get_optimal_thread_count()
"""
Default maximum number of jobs that can be in progress at the same time.
"""
def _default_executor_factory(self):
max_simultaneous_jobs = self._max_simultaneous_jobs
if max_simultaneous_jobs <= 0:
max_workers = tu.get_optimal_thread_count()
else:
max_workers = max_simultaneous_jobs
return futurist.ThreadPoolExecutor(max_workers=max_workers)
def __init__(self,
name,
jobboard,
persistence=None,
engine=None,
engine_options=None,
wait_timeout=None,
log=None,
max_simultaneous_jobs=MAX_SIMULTANEOUS_JOBS,
executor_factory=None):
super(NonBlockingConductor,
self).__init__(name,
jobboard,
persistence=persistence,
engine=engine,
engine_options=engine_options,
wait_timeout=wait_timeout,
log=log,
max_simultaneous_jobs=max_simultaneous_jobs)
if executor_factory is None:
self._executor_factory = self._default_executor_factory
else:
if not six.callable(executor_factory):
raise ValueError("Provided keyword argument 'executor_factory'"
" must be callable")
self._executor_factory = executor_factory
def __init__(self, exchange, topic, tasks, executor=None, **kwargs):
self._topic = topic
self._executor = executor
self._threads_count = kwargs.pop('threads_count',
tu.get_optimal_thread_count())
if self._executor is None:
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._endpoints = self._derive_endpoints(tasks)
self._server = server.Server(topic, exchange, self._executor,
self._endpoints, **kwargs)
def __init__(self, max_workers=None):
if max_workers is None:
max_workers = tu.get_optimal_thread_count()
super(ProcessPoolExecutor, self).__init__(max_workers=max_workers)
if self._max_workers <= 0:
raise ValueError("Max workers must be greater than zero")
self._gatherer = _Gatherer(
# Since our submit will use this gatherer we have to reference
# the parent submit, bound to this instance (which is what we
# really want to use anyway).
super(ProcessPoolExecutor, self).submit)
def __init__(self, max_workers=None):
if max_workers is None:
max_workers = tu.get_optimal_thread_count()
super(ThreadPoolExecutor, self).__init__(max_workers=max_workers)
if self._max_workers <= 0:
raise ValueError("Max workers must be greater than zero")
self._gatherer = _Gatherer(
# Since our submit will use this gatherer we have to reference
# the parent submit, bound to this instance (which is what we
# really want to use anyway).
super(ThreadPoolExecutor, self).submit)
def __init__(self, exchange, topic, tasks, executor=None, **kwargs):
self._topic = topic
self._executor = executor
self._owns_executor = False
self._threads_count = -1
if self._executor is None:
if 'threads_count' in kwargs:
self._threads_count = int(kwargs.pop('threads_count'))
if self._threads_count <= 0:
raise ValueError("threads_count provided must be > 0")
else:
self._threads_count = tu.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._owns_executor = True
self._endpoints = self._derive_endpoints(tasks)
self._server = server.Server(topic, exchange, self._executor,
self._endpoints, **kwargs)
def __init__(self, exchange, topic, tasks, executor=None, **kwargs):
self._topic = topic
self._executor = executor
self._owns_executor = False
self._threads_count = -1
if self._executor is None:
if 'threads_count' in kwargs:
self._threads_count = int(kwargs.pop('threads_count'))
if self._threads_count <= 0:
raise ValueError("threads_count provided must be > 0")
else:
self._threads_count = tu.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._owns_executor = True
self._endpoints = self._derive_endpoints(tasks)
self._exchange = exchange
self._server = server.Server(topic, exchange, self._executor,
self._endpoints, **kwargs)
def run(self):
if self._executor is None:
# NOTE(harlowja): since no executor was provided we have to create
# one, and also ensure that we shutdown the one we create to
# ensure that we don't leak threads.
thread_count = threading_utils.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(thread_count)
owns_executor = True
else:
owns_executor = False
try:
ActionEngine.run(self)
finally:
# Don't forget to shutdown the executor!!
if owns_executor:
try:
self._executor.shutdown(wait=True)
finally:
self._executor = None
def run(self):
if self._executor is None:
# NOTE(harlowja): since no executor was provided we have to create
# one, and also ensure that we shutdown the one we create to
# ensure that we don't leak threads.
thread_count = threading_utils.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(thread_count)
owns_executor = True
else:
owns_executor = False
try:
ActionEngine.run(self)
finally:
# Don't forget to shutdown the executor!!
if owns_executor:
try:
self._executor.shutdown(wait=True)
finally:
self._executor = None
def __init__(self, exchange, topic, tasks,
executor=None, threads_count=None, url=None,
transport=None, transport_options=None,
retry_options=None):
self._topic = topic
self._executor = executor
self._owns_executor = False
self._threads_count = -1
if self._executor is None:
if threads_count is not None:
self._threads_count = int(threads_count)
else:
self._threads_count = tu.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(self._threads_count)
self._owns_executor = True
self._endpoints = self._derive_endpoints(tasks)
self._exchange = exchange
self._server = server.Server(topic, exchange, self._executor,
self._endpoints, url=url,
transport=transport,
transport_options=transport_options,
retry_options=retry_options)
def __init__(self, max_workers=None):
if max_workers is None:
max_workers = tu.get_optimal_thread_count()
super(ProcessPoolExecutor, self).__init__(max_workers=max_workers)
if self._max_workers <= 0:
raise ValueError("Max workers must be greater than zero")
def start(self):
if self._own_executor:
thread_count = threading_utils.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(thread_count)
def start(self):
if self._own_executor:
thread_count = threading_utils.get_optimal_thread_count()
self._executor = futures.ThreadPoolExecutor(thread_count)
def __init__(self, max_workers=None):
if max_workers is None:
max_workers = tu.get_optimal_thread_count()
super(ProcessPoolExecutor, self).__init__(max_workers=max_workers)
if self._max_workers <= 0:
raise ValueError("Max workers must be greater than zero")
