openstack/deb-python-taskflow
Code Issues Proposed changes

Merge "Don't bother scanning for workers if no new messages arrived"

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This commit is contained in:
Jenkins
2016-02-13 22:14:42 +00:00
committed by Gerrit Code Review
parent a0b1d5960f 8c1172b8b4
commit 6cff7b2721
2 changed files with 26 additions and 7 deletions
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27
taskflow/engines/worker_based/executor.py
View File

@@ -74,6 +74,9 @@ class WorkerTaskExecutor(executor.TaskExecutor):
before_join=lambda t: p_worker.stop(),
after_join=lambda t: p_worker.reset(),
before_start=lambda t: p_worker.reset())
self._messages_processed = {
'finder': self._finder.messages_processed,
}
def _process_response(self, response, message):
"""Process response from remote side."""
@@ -151,9 +154,7 @@ class WorkerTaskExecutor(executor.TaskExecutor):
if request.expired:
expired_requests[request_uuid] = request
elif request.state == pr.WAITING:
worker = self._finder.get_worker_for_task(request.task)
if worker is not None:
waiting_requests[request_uuid] = (request, worker)
waiting_requests[request_uuid] = request
if expired_requests:
with self._ongoing_requests_lock:
while expired_requests:
@@ -161,10 +162,21 @@ class WorkerTaskExecutor(executor.TaskExecutor):
if self._handle_expired_request(request):
del self._ongoing_requests[request_uuid]
if waiting_requests:
while waiting_requests:
request_uuid, (request, worker) = waiting_requests.popitem()
if request.transition_and_log_error(pr.PENDING, logger=LOG):
self._publish_request(request, worker)
finder = self._finder
new_messages_processed = finder.messages_processed
last_messages_processed = self._messages_processed['finder']
if new_messages_processed > last_messages_processed:
# Some new message got to the finder, so we can see
# if any new workers match (if no new messages have been
# processed we might as well not do anything).
while waiting_requests:
_request_uuid, request = waiting_requests.popitem()
worker = finder.get_worker_for_task(request.task)
if (worker is not None and
request.transition_and_log_error(pr.PENDING,
logger=LOG)):
self._publish_request(request, worker)
self._messages_processed['finder'] = new_messages_processed
def _submit_task(self, task, task_uuid, action, arguments,
progress_callback=None, **kwargs):
@@ -248,3 +260,4 @@ class WorkerTaskExecutor(executor.TaskExecutor):
_request_uuid, request = self._ongoing_requests.popitem()
self._handle_expired_request(request)
self._finder.clear()
self._messages_processed['finder'] = self._finder.messages_processed

6
taskflow/engines/worker_based/types.py
View File

@@ -152,6 +152,11 @@ class ProxyWorkerFinder(WorkerFinder):
response=True)),
})
self._counter = itertools.count()
self._messages_processed = 0
@property
def messages_processed(self):
return self._messages_processed
def _next_worker(self, topic, tasks, temporary=False):
if not temporary:
@@ -199,6 +204,7 @@ class ProxyWorkerFinder(WorkerFinder):
LOG.debug("Updated worker '%s' (%s total workers are"
" currently known)", worker, self._total_workers())
self._cond.notify_all()
self._messages_processed += 1
def clear(self):
with self._cond: