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cheesy global lock

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Chris Meyers
2016-09-22 17:54:27 -04:00
parent 04f69727f2
commit 3a8033dec4
1 changed files with 11 additions and 11 deletions
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8
awx/main/scheduler/__init__.py
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@@ -241,8 +241,9 @@ def process_graph(graph, task_capacity):
(str(node_obj), str(impact), str(remaining_volume)))
def schedule():
lockfile = open("/tmp/tower_scheduler.lock", "w")
fcntl.lockf(lockfile, fcntl.LOCK_EX)
with transaction.atomic():
# Lock
Instance.objects.select_for_update().all()[0]
task_capacity = get_system_task_capacity()
@@ -254,5 +255,4 @@ def schedule():
if graph:
process_graph(graph, task_capacity)
fcntl.lockf(lockfile, fcntl.LOCK_UN)
# Unlock, due to transaction ending