def _get_loop_items(self):
'''
Loads a lookup plugin to handle the with_* portion of a task (if specified),
and returns the items result.
'''
# save the play context variables to a temporary dictionary,
# so that we can modify the job vars without doing a full copy
# and later restore them to avoid modifying things too early
play_context_vars = dict()
self._play_context.update_vars(play_context_vars)
old_vars = dict()
for k in play_context_vars:
if k in self._job_vars:
old_vars[k] = self._job_vars[k]
self._job_vars[k] = play_context_vars[k]
templar = Templar(loader=self._loader, shared_loader_obj=self._shared_loader_obj, variables=self._job_vars)
items = None
if self._task.loop:
if self._task.loop in self._shared_loader_obj.lookup_loader:
#TODO: remove convert_bare true and deprecate this in with_
if self._task.loop == 'first_found':
# first_found loops are special. If the item is undefined
# then we want to fall through to the next value rather
# than failing.
loop_terms = listify_lookup_plugin_terms(terms=self._task.loop_args, templar=templar, loader=self._loader, fail_on_undefined=False, convert_bare=True)
loop_terms = [t for t in loop_terms if not templar._contains_vars(t)]
else:
try:
loop_terms = listify_lookup_plugin_terms(terms=self._task.loop_args, templar=templar, loader=self._loader, fail_on_undefined=True, convert_bare=True)
except AnsibleUndefinedVariable as e:
display.deprecated("Skipping task due to undefined Error, in the future this will be a fatal error.: %s" % to_bytes(e))
return None
# get lookup
mylookup = self._shared_loader_obj.lookup_loader.get(self._task.loop, loader=self._loader, templar=templar)
# give lookup task 'context' for subdir (mostly needed for first_found)
for subdir in ['template', 'var', 'file']: #TODO: move this to constants?
if subdir in self._task.action:
break
setattr(mylookup,'_subdir', subdir + 's')
# run lookup
items = mylookup.run(terms=loop_terms, variables=self._job_vars, wantlist=True)
else:
raise AnsibleError("Unexpected failure in finding the lookup named '%s' in the available lookup plugins" % self._task.loop)
# now we restore any old job variables that may have been modified,
# and delete them if they were in the play context vars but not in
# the old variables dictionary
for k in play_context_vars:
if k in old_vars:
self._job_vars[k] = old_vars[k]
else:
del self._job_vars[k]
if items:
from ansible.vars.unsafe_proxy import UnsafeProxy
for idx, item in enumerate(items):
if item is not None and not isinstance(item, UnsafeProxy):
items[idx] = UnsafeProxy(item)
return items
def _get_loop_items(self):
'''
Loads a lookup plugin to handle the with_* portion of a task (if specified),
and returns the items result.
'''
# save the play context variables to a temporary dictionary,
# so that we can modify the job vars without doing a full copy
# and later restore them to avoid modifying things too early
play_context_vars = dict()
self._play_context.update_vars(play_context_vars)
old_vars = dict()
for k in play_context_vars:
if k in self._job_vars:
old_vars[k] = self._job_vars[k]
self._job_vars[k] = play_context_vars[k]
# get search path for this task to pass to lookup plugins
self._job_vars['ansible_search_path'] = self._task.get_search_path()
templar = Templar(loader=self._loader,
shared_loader_obj=self._shared_loader_obj,
variables=self._job_vars)
items = None
if self._task.loop:
if self._task.loop in self._shared_loader_obj.lookup_loader:
fail = True
if self._task.loop == 'first_found':
# first_found loops are special. If the item is undefined then we want to fall through to the next value rather than failing.
fail = False
loop_terms = listify_lookup_plugin_terms(
terms=self._task.loop_args,
templar=templar,
loader=self._loader,
fail_on_undefined=fail,
convert_bare=False)
if not fail:
loop_terms = [
t for t in loop_terms if not templar._contains_vars(t)
]
# get lookup
mylookup = self._shared_loader_obj.lookup_loader.get(
self._task.loop, loader=self._loader, templar=templar)
# give lookup task 'context' for subdir (mostly needed for first_found)
for subdir in ['template', 'var',
'file']: # TODO: move this to constants?
if subdir in self._task.action:
break
setattr(mylookup, '_subdir', subdir + 's')
# run lookup
items = mylookup.run(terms=loop_terms,
variables=self._job_vars,
wantlist=True)
else:
raise AnsibleError(
"Unexpected failure in finding the lookup named '%s' in the available lookup plugins"
% self._task.loop)
# now we restore any old job variables that may have been modified,
# and delete them if they were in the play context vars but not in
# the old variables dictionary
for k in play_context_vars:
if k in old_vars:
self._job_vars[k] = old_vars[k]
else:
del self._job_vars[k]
if items:
from ansible.vars.unsafe_proxy import UnsafeProxy
for idx, item in enumerate(items):
if item is not None and not isinstance(item, UnsafeProxy):
items[idx] = UnsafeProxy(item)
# ensure basedir is always in (dwim already searches here but we need to display it)
if self._loader.get_basedir(
) not in self._job_vars['ansible_search_path']:
self._job_vars['ansible_search_path'].append(
self._loader.get_basedir())
return items
def get_vars(self,
loader,
play=None,
host=None,
task=None,
include_hostvars=True,
include_delegate_to=True,
use_cache=True):
'''
Returns the variables, with optional "context" given via the parameters
for the play, host, and task (which could possibly result in different
sets of variables being returned due to the additional context).
The order of precedence is:
- play->roles->get_default_vars (if there is a play context)
- group_vars_files[host] (if there is a host context)
- host_vars_files[host] (if there is a host context)
- host->get_vars (if there is a host context)
- fact_cache[host] (if there is a host context)
- play vars (if there is a play context)
- play vars_files (if there's no host context, ignore
file names that cannot be templated)
- task->get_vars (if there is a task context)
- vars_cache[host] (if there is a host context)
- extra vars
'''
debug("in VariableManager get_vars()")
cache_entry = self._get_cache_entry(play=play, host=host, task=task)
if cache_entry in VARIABLE_CACHE and use_cache:
debug("vars are cached, returning them now")
return VARIABLE_CACHE[cache_entry]
all_vars = defaultdict(dict)
magic_variables = self._get_magic_variables(
loader=loader,
play=play,
host=host,
task=task,
include_hostvars=include_hostvars,
include_delegate_to=include_delegate_to,
)
if play:
# first we compile any vars specified in defaults/main.yml
# for all roles within the specified play
for role in play.get_roles():
all_vars = combine_vars(all_vars, role.get_default_vars())
# if we have a task in this context, and that task has a role, make
# sure it sees its defaults above any other roles, as we previously
# (v1) made sure each task had a copy of its roles default vars
if task and task._role is not None:
all_vars = combine_vars(all_vars,
task._role.get_default_vars())
if host:
# next, if a host is specified, we load any vars from group_vars
# files and then any vars from host_vars files which may apply to
# this host or the groups it belongs to
# we merge in vars from groups specified in the inventory (INI or script)
all_vars = combine_vars(all_vars, host.get_group_vars())
# then we merge in the special 'all' group_vars first, if they exist
if 'all' in self._group_vars_files:
data = preprocess_vars(self._group_vars_files['all'])
for item in data:
all_vars = combine_vars(all_vars, item)
for group in host.get_groups():
if group.name in self._group_vars_files and group.name != 'all':
for data in self._group_vars_files[group.name]:
data = preprocess_vars(data)
for item in data:
all_vars = combine_vars(all_vars, item)
# then we merge in vars from the host specified in the inventory (INI or script)
all_vars = combine_vars(all_vars, host.get_vars())
# then we merge in the host_vars/<hostname> file, if it exists
host_name = host.get_name()
if host_name in self._host_vars_files:
for data in self._host_vars_files[host_name]:
data = preprocess_vars(data)
for item in data:
all_vars = combine_vars(all_vars, item)
# finally, the facts caches for this host, if it exists
try:
host_facts = self._fact_cache.get(host.name, dict())
for k in host_facts.keys():
if host_facts[k] is not None and not isinstance(
host_facts[k], UnsafeProxy):
host_facts[k] = UnsafeProxy(host_facts[k])
all_vars = combine_vars(all_vars, host_facts)
except KeyError:
pass
if play:
all_vars = combine_vars(all_vars, play.get_vars())
for vars_file_item in play.get_vars_files():
# create a set of temporary vars here, which incorporate the extra
# and magic vars so we can properly template the vars_files entries
temp_vars = combine_vars(all_vars, self._extra_vars)
temp_vars = combine_vars(all_vars, magic_variables)
templar = Templar(loader=loader, variables=temp_vars)
# we assume each item in the list is itself a list, as we
# support "conditional includes" for vars_files, which mimics
# the with_first_found mechanism.
#vars_file_list = templar.template(vars_file_item)
vars_file_list = vars_file_item
if not isinstance(vars_file_list, list):
vars_file_list = [vars_file_list]
# now we iterate through the (potential) files, and break out
# as soon as we read one from the list. If none are found, we
# raise an error, which is silently ignored at this point.
try:
for vars_file in vars_file_list:
vars_file = templar.template(vars_file)
try:
data = preprocess_vars(
loader.load_from_file(vars_file))
if data is not None:
for item in data:
all_vars = combine_vars(all_vars, item)
break
except AnsibleFileNotFound as e:
# we continue on loader failures
continue
except AnsibleParserError as e:
raise
else:
raise AnsibleFileNotFound(
"vars file %s was not found" % vars_file_item)
except (UndefinedError, AnsibleUndefinedVariable):
if host is not None and self._fact_cache.get(
host.name,
dict()).get('module_setup') and task is not None:
raise AnsibleUndefinedVariable(
"an undefined variable was found when attempting to template the vars_files item '%s'"
% vars_file_item,
obj=vars_file_item)
else:
# we do not have a full context here, and the missing variable could be
# because of that, so just show a warning and continue
display.vvv(
"skipping vars_file '%s' due to an undefined variable"
% vars_file_item)
continue
if not C.DEFAULT_PRIVATE_ROLE_VARS:
for role in play.get_roles():
all_vars = combine_vars(
all_vars, role.get_vars(include_params=False))
if task:
if task._role:
all_vars = combine_vars(all_vars, task._role.get_vars())
all_vars = combine_vars(all_vars, task.get_vars())
if host:
all_vars = combine_vars(
all_vars, self._vars_cache.get(host.get_name(), dict()))
all_vars = combine_vars(
all_vars,
self._nonpersistent_fact_cache.get(host.name, dict()))
all_vars = combine_vars(all_vars, self._extra_vars)
all_vars = combine_vars(all_vars, magic_variables)
# if we have a task and we're delegating to another host, figure out the
# variables for that host now so we don't have to rely on hostvars later
if task and task.delegate_to is not None and include_delegate_to:
all_vars['ansible_delegated_vars'] = self._get_delegated_vars(
loader, play, task, all_vars)
#VARIABLE_CACHE[cache_entry] = all_vars
debug("done with get_vars()")
return all_vars
d[k] = self.template(variable[k], preserve_trailing_newlines=preserve_trailing_newlines, fail_on_undefined=fail_on_undefined, overrides=overrides)
d[k] = self.template(variable[k], preserve_trailing_newlines=preserve_trailing_newlines, fail_on_undefined=fail_on_undefined, overrides=overrides)
return d
else:
return variable
raise AnsibleError("lookup plugin (%s) not found" % name)
ran = instance.run(loop_terms, variables=self._available_variables, **kwargs)
except (AnsibleUndefinedVariable, UndefinedError) as e:
raise AnsibleUndefinedVariable(e)
except Exception as e:
if self._fail_on_lookup_errors:
raise
ran = None
if ran:
from ansible.vars.unsafe_proxy import UnsafeProxy
ran = UnsafeProxy(",".join(ran))
return ran
else:
return data
def _do_template(self, data, preserve_trailing_newlines=True, escape_backslashes=True, fail_on_undefined=None, overrides=None):
# For preserving the number of input newlines in the output (used
# later in this method)
data_newlines = _count_newlines_from_end(data)
if fail_on_undefined is None:
fail_on_undefined = self._fail_on_undefined_errors
fail_on_undefined = self._fail_on_undefined_errors
try:
# allows template header overrides to change jinja2 options.
if overrides is None:
myenv = self.environment.overlay()
# Get jinja env overrides from template