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Introduce the 'always_run' task clause.

Browse source 
The 'always_run' task clause allows one to execute a task even in
check mode.

While here implement Runner.noop_on_check() to check if a runner
really should execute its task, with respect to check mode option
and 'always_run' clause.

Also add the optional 'jinja2' argument to check_conditional() :
it allows to give this function a jinja2 expression without exposing
the 'jinja2_compare' implementation mechanism.
This commit is contained in:
Stoned Elipot 2013-08-20 23:09:44 +02:00
commit f0743fc32a
14 changed files with 136 additions and 13 deletions
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9
lib/ansible/playbook/task.py
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@ -29,7 +29,7 @@ class Task(object):
'delegate_to', 'first_available_file', 'ignore_errors',
'local_action', 'transport', 'sudo', 'sudo_user', 'sudo_pass',
'items_lookup_plugin', 'items_lookup_terms', 'environment', 'args',
'any_errors_fatal', 'changed_when'
'any_errors_fatal', 'changed_when', 'always_run'
]
# to prevent typos and such
@ -38,7 +38,7 @@ class Task(object):
'first_available_file', 'include', 'tags', 'register', 'ignore_errors',
'delegate_to', 'local_action', 'transport', 'sudo', 'sudo_user',
'sudo_pass', 'when', 'connection', 'environment', 'args',
'any_errors_fatal', 'changed_when'
'any_errors_fatal', 'changed_when', 'always_run'
]
def __init__(self, play, ds, module_vars=None, additional_conditions=None):
@ -178,6 +178,8 @@ class Task(object):
self.ignore_errors = ds.get('ignore_errors', False)
self.any_errors_fatal = ds.get('any_errors_fatal', play.any_errors_fatal)
self.always_run = ds.get('always_run', False)
# action should be a string
if not isinstance(self.action, basestring):
raise errors.AnsibleError("action is of type '%s' and not a string in task. name: %s" % (type(self.action).__name__, self.name))
@ -216,10 +218,11 @@ class Task(object):
# allow runner to see delegate_to option
self.module_vars['delegate_to'] = self.delegate_to
# make ignore_errors accessable to Runner code
# make some task attributes accessible to Runner code
self.module_vars['ignore_errors'] = self.ignore_errors
self.module_vars['register'] = self.register
self.module_vars['changed_when'] = self.changed_when
self.module_vars['always_run'] = self.always_run
# tags allow certain parts of a playbook to be run without running the whole playbook
apply_tags = ds.get('tags', None)