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Fixing bugs in play iteration and strategies

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* Fixed a bug in PlayIterator when ITERATING_ALWAYS, where the block
  was advanced but the incorrect data structure elements were cleared
* Cleaned up the logic of is_failed() in PlayIterator
* Fixed a bug in the free strategy which had not been updated to use
  the base strategy _execute_meta() method
* Stopped strategies from using is_failed() to determine if tasks should
  still be fetched for a host

Fixes #14040
This commit is contained in:
James Cammarata 2016-02-03 18:42:27 -05:00
parent 8039ceee0f
commit 699a854bf3
3 changed files with 16 additions and 25 deletions
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21
lib/ansible/executor/play_iterator.py
View file

@ -275,7 +275,7 @@ class PlayIterator:
if state.pending_setup:
state.pending_setup = False
if state.fail_state & self.FAILED_TASKS == self.FAILED_TASKS:
if self._check_failed_state(state):
state.run_state = self.ITERATING_RESCUE
elif state.cur_regular_task >= len(block.block):
state.run_state = self.ITERATING_ALWAYS
@ -335,7 +335,9 @@ class PlayIterator:
state.cur_rescue_task = 0
state.cur_always_task = 0
state.run_state = self.ITERATING_TASKS
state.child_state = None
state.tasks_child_state = None
state.rescue_child_state = None
state.always_child_state = None
else:
task = block.always[state.cur_always_task]
if isinstance(task, Block) or state.always_child_state is not None:
@ -365,7 +367,7 @@ class PlayIterator:
return (state, task)
def _set_failed_state(self, state):
if state.pending_setup:
if state.run_state == self.ITERATING_SETUP:
state.fail_state |= self.FAILED_SETUP
state.run_state = self.ITERATING_COMPLETE
elif state.run_state == self.ITERATING_TASKS:
@ -407,19 +409,18 @@ class PlayIterator:
def _check_failed_state(self, state):
if state is None:
return False
elif state.fail_state != self.FAILED_NONE:
if state.run_state == self.ITERATING_RESCUE and state.fail_state&self.FAILED_RESCUE == 0 or \
state.run_state == self.ITERATING_ALWAYS and state.fail_state&self.FAILED_ALWAYS == 0:
return False
else:
return True
elif state.run_state == self.ITERATING_TASKS and self._check_failed_state(state.tasks_child_state):
return True
elif state.run_state == self.ITERATING_RESCUE and self._check_failed_state(state.rescue_child_state):
return True
elif state.run_state == self.ITERATING_ALWAYS and self._check_failed_state(state.always_child_state):
return True
elif state.run_state == self.ITERATING_COMPLETE and state.fail_state != self.FAILED_NONE:
if state.run_state == self.ITERATING_RESCUE and state.fail_state&self.FAILED_RESCUE == 0:
return False
elif state.run_state == self.ITERATING_ALWAYS and state.fail_state&self.FAILED_ALWAYS == 0:
return False
else:
return True
return False
def is_failed(self, host):

17
lib/ansible/plugins/strategy/free.py
View file

@ -78,7 +78,7 @@ class StrategyModule(StrategyBase):
(state, task) = iterator.get_next_task_for_host(host, peek=True)
display.debug("free host state: %s" % state)
display.debug("free host task: %s" % task)
if not iterator.is_failed(host) and host_name not in self._tqm._unreachable_hosts and task:
if host_name not in self._tqm._unreachable_hosts and task:
# set the flag so the outer loop knows we've still found
# some work which needs to be done
@ -106,18 +106,7 @@ class StrategyModule(StrategyBase):
continue
if task.action == 'meta':
# meta tasks store their args in the _raw_params field of args,
# since they do not use k=v pairs, so get that
meta_action = task.args.get('_raw_params')
if meta_action == 'noop':
continue
elif meta_action == 'flush_handlers':
# FIXME: in the 'free' mode, flushing handlers should result in
# only those handlers notified for the host doing the flush
self.run_handlers(iterator, play_context)
else:
raise AnsibleError("invalid meta action requested: %s" % meta_action, obj=task._ds)
self._execute_meta(task, play_context, iterator)
self._blocked_hosts[host_name] = False
else:
# handle step if needed, skip meta actions as they are used internally
@ -126,6 +115,8 @@ class StrategyModule(StrategyBase):
display.warning("Using any_errors_fatal with the free strategy is not supported, as tasks are executed independently on each host")
self._tqm.send_callback('v2_playbook_on_task_start', task, is_conditional=False)
self._queue_task(host, task, task_vars, play_context)
else:
display.debug("%s is blocked, skipping for now" % host_name)
# move on to the next host and make sure we
# haven't gone past the end of our hosts list

3
lib/ansible/plugins/strategy/linear.py
View file

@ -54,8 +54,7 @@ class StrategyModule(StrategyBase):
host_tasks = {}
display.debug("building list of next tasks for hosts")
for host in hosts:
if not iterator.is_failed(host):
host_tasks[host.name] = iterator.get_next_task_for_host(host, peek=True)
host_tasks[host.name] = iterator.get_next_task_for_host(host, peek=True)
display.debug("done building task lists")
num_setups = 0