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Use taskflow library for building and executing action plans

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The aim of this patchset is to integrate taskflow in
the Watcher Applier. Taskflow will help us a lot to make
Action Plan execution easy, consistent, scalable and reliable.

DocImpact

Partially implements: blueprint use-taskflow

Change-Id: I903d6509d74a61ad64e1506b8a7156e6e91abcfb
Closes-Bug: #1535326
Closes-Bug: #1531912
This commit is contained in:
Jean-Emile DARTOIS
2016-01-06 12:44:25 +01:00
parent f675003076
commit 0e7bfe61bd
44 changed files with 1234 additions and 848 deletions
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36
watcher/decision_engine/planner/default.py
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@@ -30,8 +30,9 @@ LOG = log.getLogger(__name__)
class DefaultPlanner(base.BasePlanner):
priorities = {
'nop': 0,
'migrate': 1,
'sleep': 1,
'change_nova_service_state': 2,
'migrate': 3,
}
def create_action(self,
@@ -53,7 +54,7 @@ class DefaultPlanner(base.BasePlanner):
return action
def schedule(self, context, audit_id, solution):
LOG.debug('Create an action plan for the audit uuid')
LOG.debug('Create an action plan for the audit uuid: %s ', audit_id)
action_plan = self._create_action_plan(context, audit_id)
actions = list(solution.actions)
@@ -76,18 +77,20 @@ class DefaultPlanner(base.BasePlanner):
action_plan.first_action_id = None
action_plan.save()
else:
# create the first action
parent_action = self._create_action(context,
scheduled[0][1],
None)
# remove first
scheduled.pop(0)
action_plan.first_action_id = parent_action.id
action_plan.save()
for s_action in scheduled:
action = self._create_action(context, s_action[1],
parent_action)
parent_action = action
current_action = self._create_action(context, s_action[1],
parent_action)
parent_action = current_action
return action_plan
@@ -105,16 +108,19 @@ class DefaultPlanner(base.BasePlanner):
return new_action_plan
def _create_action(self, context, _action, parent_action):
action_description = str(_action)
LOG.debug("Create a action for the following resquest : %s"
% action_description)
try:
LOG.debug("Creating the %s in watcher db",
_action.get("action_type"))
new_action = objects.Action(context, **_action)
new_action.create(context)
new_action.save()
new_action = objects.Action(context, **_action)
new_action.create(context)
new_action.save()
if parent_action:
parent_action.next = new_action.id
parent_action.save()
if parent_action:
parent_action.next = new_action.id
parent_action.save()
return new_action
return new_action
except Exception as exc:
LOG.exception(exc)
raise