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Prevent reparenting a block with itself (#36075)

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* Prevent reparenting a block with itself

* Move __eq__ to Block, to avoid some unexpected problems
This commit is contained in:
Matt Martz 2018-02-13 09:30:05 -06:00 committed by GitHub
parent 373b1dcf59
commit 76ff3e9efc
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1 changed files with 13 additions and 1 deletions
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14
lib/ansible/playbook/block.py
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@ -65,6 +65,10 @@ class Block(Base, Become, Conditional, Taggable):
def __repr__(self):
return "BLOCK(uuid=%s)(id=%s)(parent=%s)" % (self._uuid, id(self), self._parent)
def __eq__(self, other):
'''object comparison based on _uuid'''
return self._uuid == other._uuid
def get_vars(self):
'''
Blocks do not store variables directly, however they may be a member
@ -174,8 +178,16 @@ class Block(Base, Become, Conditional, Taggable):
# block their parent
cur_obj = new_task
while cur_obj._parent:
if cur_obj._parent:
prev_obj = cur_obj
cur_obj = cur_obj._parent
cur_obj._parent = new_block
# Ensure that we don't make the new_block the parent of itself
if cur_obj != new_block:
cur_obj._parent = new_block
else:
# prev_obj._parent is cur_obj, to allow for mutability we need to use prev_obj
prev_obj._parent = new_block
else:
new_task._parent = new_block
new_task_list.append(new_task)